14.4 Valves (excluding stainless steel) (paper) General information

Thread Content

│ -Development and application of a new type of high-pressure paste delivery pump - poppet valve pump │ Design optimization research of 1000MW nuclear power steam turbine valve activity test │ 1000MW steam turbine main steam valve valve seat surfacing process │ Design characteristics of 1000MW nuclear power steam turbine high-pressure valve │ Development of WB36 steel valves for 1000MW supercritical thermal power units │ Finite element analysis of temperature field and stress field of high-pressure main regulating valve of 1000MW ultra-supercritical steam turbine │ Failure analysis of high-pressure turbine speed regulating valve of 103-JT synthesis gas compressor unit │ 14.4 Valve (excluding stainless steel) (paper) General information.txt │ Discussion on the design of sealing pair of 150-pound large-diameter flat body valve │ 150-pound cast corrosion-resistant flange connection gate valve │ Examples of modification and application of type 18 coal press valve discs│ Causes and treatment of failure of type 1900 safety valve│ Analysis of cracks in 1Cr9MoVNbN steel valve seat│ Exploration and production of rolling process of austenitic gas valve steel for 2.3t ingot│ Research and development of casting process for valve body of 240MW pumped storage unit│ Treatment of leakage of main cooling liquid oxygen return valve of 25000m^3/h air separation system│ Replacement of hot air valve and bellows of 2500m3 blast furnace│ Analysis and treatment of gas leakage of 2500m^3 blast furnace gas pressure regulating valve group│ Research on the structure of 27SiMnMoV steel needle valve body│ Heat treatment of 2Cr13 stainless steel valve body│ Design and experimental research of 2D electro-hydraulic digital high-frequency valve │ 2D valve-controlled electro-hydraulic exciter │ Analysis and improvement of 2HA/2 reciprocating compressor valve and wear faults │ 3.5T hydraulic excavator hydraulic main valve oil circuit diagram │ Research on the opening and closing action response of the water valve of 300MN die forging hydraulic press │ Single valve and sequence valve switching issues of regulating valve during operation of 300MW turbine │ Analysis and treatment of the causes of sinking of the high-pressure regulating valve seat of 300MW steam turbine │ Failure analysis and treatment of the sinking of the high-pressure regulating valve seat of the 300MW steam turbine and the falling off of the butterfly valve │ Development, promotion and application of a new multi-channel reversing valve group series for 3 to 5t loaders │ 40B219-2003 Technical conditions for the selection and piping design of steam traps and traps in petrochemical plants │ Flow field simulation calculation analysis of a new type of one-way valve under 40MPa ultrahigh pressure│ 40_Improved design of the control valve of the 50 loader planetary power shift transmission │ Casting process design of the 46-inch ductile iron valve body │ Diagnosis and analysis of faults related to the EGR valve of the 4DB engine │ Discussion and application of the test method of the converter valve side casing of the 500kV converter station │ 527WS_Finite element analysis of the Type 1 side flap valve body│ Failure analysis of the hydraulic end valve box of the 5ZB-2800 fracturing pump│ Analysis of the causes of quenching cracks in the upper end cover of the 600MW steam turbine valve and preventive measures│ Structural strength and flow field analysis of the main steam valve of the 600MW ultra-supercritical steam turbine_Huangjinjin.caj │ 660 MW ultra-supercritical double reheat steam turbine valve assembly technology │ Finite element simulation analysis of 660 MW supercritical steam turbine main steam valve │ 660 MW supercritical steam turbine unit steam inlet valve thermal stress optimization │ 660 MW ultra-supercritical double reheat steam turbine valve assembly technology │ Application of 70 sand in the production of C5 steel valve castings │ Development of Type 8 Casing Valve Downhole Sealing Valve Core│ Structural Improvement of Type A27 Safety Valve│ Brief Analysis on Maintenance of Simulation Switching Valve of Type A3 Train Braking System│ Fault Analysis of AGC Servo Valve│ AirTAC Solenoid Valve│ Analysis and Comparison of Calculation of Rated Displacement of Safety Release Valve of AP1000 Nuclear Power Project│ Comparison of Safety Valve Exhaust Reaction Force Calculation Formulas in API RP520 and ASME B31.1│ API6D Interpretation of the 23rd edition of pipeline valves│ Discussion on API6D specifications and several issues in the design and testing of pipeline valves│ Analysis of the reasons for the small opening of the butterfly valve at the inlet of the ARGG device hood│ Application of AR bispectrum in fault diagnosis of pressure reducing valves│ ASME and RCC_Analysis of M-related nuclear primary valve regulations │ Study of ASME safety valve regulations * and discussion │ Application of AutoLisp in valve driving torque calculation │ Class A pipelines and valves used for Class A pipelines │ Research on the sealing scheme of BW butt welded valve maintenance and pressure testing │ C5 valve body cracking failure analysis C5 valve body cracking failure analysis │ Composition analysis of iron and nickel in C95800 valve castings │ Application of CAD in the three-dimensional design of triple eccentric butterfly valves │ Application of CAD technology in valve block hole system positioning system │ Application of CAD auxiliary variable design in valve design │ Application of CAESAR ┡ software in steam admission valve pipeline design │ Structural design of CARR reactor natural circulation flap valve │ Research on design of CCS-200/40 high-pressure compressor combined gas valve │ Optimization design of force characteristic curve of CF7454 rotary valve power steering gear │ Application of CFD in the dynamic water shut-off simulation of the inlet butterfly valve of a hydropower plant │ Optimization design of the water injection one-flow valve port using CFD technology │ Application of CFX simulation analysis technology in troubleshooting of check valve plate jitter Structure and performance analysis of CO2 cylinder valve │ CO2 emission flow analysis through safety valve │ Simulation study of fluid characteristics of CRH2 EMU relay valve │ Research on the design mechanism of relief valve of D6 GX bulldozer transmission hydraulic system │ Application and maintenance of DANFLO pressure relief valve on long-distance refined oil pipeline │ Bench calibration test research of DCT clutch control valve │ Test and calculation of DEH valve flow correction curve │ DEH valve flow characteristic curve correction │ Research on the body forming process of DN100mm globe valve │ Analysis and repair of packing seal failure of DN1200 electric high temperature gate valve │ Development of DN1500 extra large diameter high temperature double gate valve │ Troubleshooting and prevention of DN1600 electric blind valve during operation │ Failure analysis and repair of DN2000mm electric blind valve │ Noise analysis of DN200 shuttle check valve │ Test analysis of spring-type safety valves for DN20; PN25 high-pressure heating water inlet side │ DQ16500 extra large valve electric device │ EN 13828-2003 Chinese version of construction valves - manually operated drinking water valves in buildings, the materials of which are copper alloy and stainless steel - testing and requirements │ Application of Excel in butterfly valve design │ Contact analysis of the valve seat at the hydraulic end of the F-1300 drilling pump│ Contact analysis of the valve seat of the F-1600 mud pump│ Modification of the F-C202 air valve│ Simulation analysis of micro-motion characteristics of the F20 forklift multi-way valve│ Research on D802 overlay welding of the deep hole sealing surface of the F92 valve body│ Development and application of FAD-400/45JA large flow hydraulically controlled one-way valve and safety valve│ FD25b type solenoid valve cavitation failure and analysis │ FGJ001 valve cover processing machine │ Fault diagnosis and analysis of Fisher intelligent valve positioner in chemical industry applications │ Application of Flexflo887 water hammer pressure relief valve in the stable operation of long-distance pipelines │ Application of FPGA in on-off valve to realize oil cylinder position control │ FQ647F-16C pneumatic coal injection ball valve DN32 design │ Comparative simulation analysis of FSAE racing car intake restriction valve │ GE coal water slurry gasification lock hopper sequence control and slag lock valve selection │ Failure analysis and repair of Henry Pratt seawater butterfly valve │ Application analysis of HESMOR controller on voltage type proportional valve │ HYSYS dynamic simulation method for safety valve size analysis │ H-shaped automobile air conditioning thermal expansion valve improvement │ ISO9000 series standards and valve product exports │ Improvement of JT valve throttling refrigeration process │ Application of KIMRAY pneumatic membrane valve in Fuling shale gas incoming station gas testing │ Application of KPF balance valve in balance adjustment │ Development and application of KZF-96 control well cleaning sand control valve │ Application of LabVIEW in pure water hydraulic valve test acquisition system │ Design and research of ultra-low temperature valves for LNG engineering │ Problems and countermeasures in the construction and installation of LNG low-temperature process ball valves │ Analysis of the development trend of LNG cryogenic valve technology │ Discussion of thermal safety valves in LNG receiving stations │ Design research of LNG marine ultra-low temperature valves │ Analysis of the causes of vibration of LNG loading skid flow regulating valve │ LonWorks intelligent electric valve control system and configuration function design │ Ls-Dyna fracturing pump valve strength analysis │ Research on the characteristics of M4 series electro-hydraulic proportional multi-way valves │ Analysis and treatment of high differential pressure of the main fuel flow valve of M701F unit │ Optimized design of hydraulic reversing valve in MATLAB │ Characteristics and common problem solutions of MOKVELD axial flow control valve │ NE type oil pipe recovery type underground safety valve │ Localization and development of NIIGATA PA5 dual-fuel diesel unit gas valve │ Weld layer structure of Ni-based alloy liquid film melting diffusion welding and its application in control valve throttling parts │ Numerical simulation of comparison of flow structures in N valve and U valve │ Research on changes in system performance parameters of ORC scroll expander bypass valve/open valve switching conditions │ Finite element analysis and process optimization of valve seat of P-2200 high-pressure mud pump │ Localization development of valve spring of PA5 dual-fuel diesel unit │ Application of PC in accumulator-type hydraulically controlled slow-closing check butterfly valve │ Research on safety valve inlet flange thickening and automatic calculation of bolt length in PDS │ Reliability analysis of PDS reciprocating pump valve disc │ PE gas valve * * Standard work progress │ Development and design of PE valve automatic welding machine │ Structural improvement of PFF65-140 hard-sealed arc flat gate valve │ Application of PLC in jig air valve control │ Improvement of PLC-controlled weight hydraulic control check butterfly valve structure │ Determination of PLC driven solenoid valve scheme │ Application of Pro/Engineer in hydraulic valve block design │ Application of Pro/ENGINEER software in valve design │ Design and research of gas valve group in Pro/E environment │ Failure analysis of PSA programmable valve YX type rubber seal ring │ Design and application of wall-adherent angle control valve in PTA device │ Reasons and solutions for leakage of packing seal of PTA device control valve │ Selection of discharge valve of PTA device refining reactor │ Application of PVG32 multi-way valve │ Research on dual voltage driver of high-speed electromagnetic switch valve with PWM pressure regulation │ Selection of regulating valves for PX device transformation project│ Technical transformation and implementation of remote monitoring of RT U valve chamber cut-off valves│ Failure analysis and treatment of locking hopper valve of S-Zorb device│ Failure analysis and countermeasures of program-controlled valve of S-ZORB device│ Hardening method and material selection of internal parts of metal sealing ball valve of S-Zorb device│ S42F8_Development of DN25 shape memory alloy trap │ SAMSON intelligent valve positioner │ Development and industrial application of SFV full-pass guided float valve tray │ Working principle of SHAFER gas-liquid linkage valve remote control switch │ Selection of SIS valve actuator │ SKEG type bio-antibacterial diaphragm valve │ Application of Solidedge software in valve design │ Application of Solidworks in safety valve design and development │ Experimental study and formula fitting of flow characteristics of SPF type balance valve│ Experimental study of flow characteristics of SP type balance valve│ SRG lifting check valve│ Simulation study of the impact of SRT33 mining dump truck synchronous valve on braking performance│ Finite element analysis of STXS135 plug valve body│ Application and improvement of Texaco coal gasification unit slag lock valve│ Failure analysis and treatment of TRT quick cut valve system debugging process│ Application of the electro-hydraulic proportional valve control system of the TRT unit │ Improvement of the control method of the emergency shut-off valve of the TRT unit │ Integrated design of the gas quick-cut valve driving device of the TRT system │ Principle analysis and troubleshooting of the balance valve for the TY900 tunnel-type beam transport vehicle │ Processing of the T-shaped sodium stop valve body │ Detection and fault diagnosis of the U341E automatic transmission solenoid valve │ Digital design of valves based on model definition under UGNX │ Application of UG software in the design of serial valve products │ Brief analysis of the influence of VFS valve filtration accuracy on hydraulic response characteristics │ Multi-objective optimization of V-shaped hydraulic valve port throttling characteristics │ V-shaped notch ball rotation control valve │ Structural optimization of V-shaped regulating ball valve │ Production process of WCB valve cast steel │ Development of WD-type fully welded ball valve three-dimensional parametric design system │ WJF500_Microcomputer Metering Valve Pressure Tester│ XFF52-25 Type Oil Production Gate Valve Body Stress Analysis│ Experimental Research on Valve Stem Corrosion Resistance by YIC Corrosion Inhibitor│ YK6H Well High-Pressure Valve Corrosion and Protection Countermeasures│ Y-type Boiler Blowdown Valve│ Y Series Refrigerator Compressor Exhaust Valve Piece Fracture Failure Analysis and Improvement│ Z45T_W_Improvement of gate valve body structure │ Improvement of Z45 gate valve structure │ Design of ZA1 valve electric device │ Research on ZF4WG200 transmission electro-hydraulic shift control valve │ Improvement of ZG15Cr1Mo1V valve body casting process │ Repair welding of ZG15Cr1Mo1V valve casting │ ZL series loader variable speed control valve failure analysis │ ZQA19_4 Test of replacing the valve stem nut with ZCuZn28A14Fe3Mn3 │ Application of ZVC software in the aromatic rotary valve control system │ Analysis and countermeasures for the fracture of the upstream valve cover of the Ф28mm oil pump │ Application of "three-valve group interlocking" in the coking unit │ "Solenoid valve" lecture-9 │ Development and application of an integrated double fixed valve pump │ One 40000 Design analysis of the molecular sieve air inlet valve control system of the m3 h oxygen generator │ Application of a calculation formula for the caliber of an incompressible fluid control valve │ Characteristics analysis of a stab-proof nipple of a well control throttle valve │ A new hydraulic valve simulation method │ Development of a butt welding stop valve for refrigeration │ Design and application of an unloading hydraulically controlled one-way valve │ Working principle of an automatic return flow valve for pumps that can be repaired and debugged online │ Structural design of an adjustable overpressure relief valve│ Design of a four-position four-way high-pressure ball valve│ Development of a mine-proof electric valve controller based on a single-chip microcomputer│ Research on a valve nonlinear correction scheme based on a least squares support vector regression machine│ A pressure change rate control method and application based on a proportional valve│ A computer-controlled electric valve opening display method│ Design of a multi-channel switching valve│ A rapid design method for safety valve discharge pipelines │ An introduction to anti-freeze cracking valves for pipelines in cold environments │ A globe valve with a pilot ball valve │ Design and analysis of a self-locking drainage connector for a converter valve valve tower │ A method to improve the full-stroke step response performance of a proportional directional valve │ Design and simulation of a new servo valve driver │ Design and research of a new one-way throttle valve │ Development of a new type of two-position butterfly valve and its application in trolley-type heat treatment furnaces │ A new type of burst pressure relief valve for transformers │ Research on the regulating characteristics of a new type of gate valve │ Development of a new type of solar water heater water shut-off valve │ Research on a new type of constant flow control valve │ Design of a new type of frictionless ball valve │ Research on a new type of intelligent flow control valve │ A new type of proportional air volume control valve │ Development and application of a new type of oil pipeline safety valve│ Numerical simulation and experimental research of a new type of flow balance valve│ A new type of hot air relief valve│ Design and simulation analysis of a new type of ball shuttle valve│ Development of a new type of direct-acting electro-hydraulic servo valve│ A new type of dump truck hydraulic tank stop valve│ Structure and analysis of a valveless three-piston hydraulic supercharger│ Design and experimental research on a mechanical normally closed pressure control valve │ A study on seismic impact resistance of a nuclear-grade instrument valve │ A model for manufacturing multiple types of gate valves │ A method for measuring the air consumption performance of an air suspension height control valve │ A control method for the valve dead zone in a hydraulic servo system │ A reset mechanism for a hydraulic servo valve │ The design of a hydraulic control check valve │ An analysis and improvement of the port flow path of a hydraulic control one-way valve │ Design of a rapid reversing valve for artificial heart│ Research on a proportional solenoid valve for automatic transmission│ Research on high-frequency hydraulic rotary valve for energy-saving hydraulic excitation technology│ Design of a new steady flow valve that can be applied to gas-liquid two-phase flow│ Development and application of an energy-saving check valve│ Performance analysis of a threaded two-way cartridge valve│ Design and calculation method of a mechanical shift buffer valve for vehicles│ A tire die forging process for a valve seat │ A study on a valve-type magnetic fluid wave energy direct power generation system │ A design scheme for a valve driver torque test bench │ A calculation method for the installation torque of a high-pressure gas cylinder valve │ A high-efficiency milling valve stem T-head fixture │ A study on flow saturation resistance of aerial work vehicle control valves │ A new drive system design for a high-speed solenoid valve │ A high-speed pulse valve dynamic characteristics │ Defect treatment and cause analysis of the abnormal action of the pressure relief valve of a 220kV transformer │ Analysis of the cause of the acetylene compressor safety valve tripping │ Analysis of the accident of the pilot safety valve not tripping │ Cause analysis and preventive measures of the transformer fuel injection caused by the failure of the pressure release valve │ Analysis of the causes of the "abnormal" action of the pressure distribution valve in a plug-in valve accident │ Analysis of the cause of the tripping of the steam drum safety valve and its connection deformation │ Technical transformation of tailwater vent valve of Wanjiazhai Hydropower Plant│ Development and application of three-action fixed valve oil pump│ Improvement of triple-eccentric butterfly valve processing tooling│ Triple-eccentric butterfly valve and its application│ Rapid optimization design of triple-eccentric butterfly valve rotation center│ Suitable area for triple-eccentric butterfly valve rotation center│ Development, characteristics and applications of triple-eccentric butterfly valve│ Research on the flow field and resistance characteristics of the triple eccentric butterfly valve │ Optimal design of the butterfly plate eccentricity angle and rotation center position of the triple eccentric butterfly valve │ Analysis of the impact of changes in structural parameters of the triple eccentric butterfly valve on the interference of its butterfly plate │ Research on the PLC control system of the plasma spray welding process of the triple eccentric butterfly valve butterfly plate │ Slag prevention and troubleshooting of the three-part gasifier lock bucket valve │ Three-rod butterfly valve transmission mechanism │ Solution to the shrinkage (loose) defect of the three-piece valve body │ Safety valve setting of the three-phase separator │ Performance comparison of three solid valve trays │ Development of three-stage electric feedback servo valve │ Characteristics analysis of electro-hydraulic servo valve in a three-dimensional centrifugal environment │ Simulation study on the impact of volumetric efficiency of the distribution valve of a three-cylinder internal combustion pump on the performance of the whole machine │ Triple valve pressure inspection and adjustment skills │ Design of the safety valve relief system of the melamine plant │ Calculation of the motion trajectory of the three-link butterfly valve butterfly plate │ Design of the three-way 2D digital valve electro-mechanical conversion mechanism │ Improvement of the cleaning assembly of the three-way plug valve │ Design and application of the three-way ball valve │ Modeling and simulation of the electro-hydraulic servo system of the three-way valve controlled single-acting cylinder │ Analysis and treatment of the cause of the rupture of the safety valve bellows of the zero-flow pipeline of the top-charging pump │ Analysis of the strength and stiffness of the main gate valve of the Shanghai combined sewage treatment project │ Improvement of the seat structure of the top-mounted ball valve │ Experience in repairing the valve in front of the blower without stopping production │ Cleaning the dirt on the inlet check valve of the 4 HE∕4 CO2 compressor without stopping │ Development and application of the downhole control valve for non-pressure wells │ Technology for replacing the main control valve of oil and gas wells in non-pressure wells │ Design of non-detachable liquefied petroleum gas cylinder valves Research on the water hammer protection effect of different types of air valves │ Testing and research on the performance of the relief valve of the aluminum alloy hydraulic valve island under different temperature conditions │ Calculation and comparison of water hammer characteristics of different types of valves │ Numerical analysis of the steam flow bending stress in the regulating stage of ultra-supercritical steam turbine under different valve sequence conditions │ Brief analysis of the needs of the evolving control valve industry │ Non-reducing water supply plastic stop valve │ Computer-aided analysis of stainless steel knife valve body casting process │ Detailed description of stainless steel ball valve parameters │ Application of stainless steel ball valves in gas drainers │ Design of automatic cladding machine for stainless steel ball valves │ Casting process of stainless steel valve bodies │ Application and research of pressure-temperature ratings of stainless steel valves │ Normally open pilot safety valve combined with bursting discs │ Leakage failure analysis of propylene pipeline valves │ Dongfang 660 Dynamic stress analysis of the valve stem of the ultra-high pressure main steam valve of the MW ultra-supercritical double reheat steam turbine│ Analysis of the valve stem dynamic stress of the ultra-high pressure main steam valve of the Dongfang 660MW ultra-supercritical double reheat steam turbine│ Discussion on the application of the two-time adjustment method in the inspection and adjustment of the gas valve clearance│ Dynamic analysis of the safety valve under fire conditions of the two-phase separator│ Application of two safety valves in supercritical boilers│ Comparison of two safety valve setting methods│ Modeling and simulation of the armature assembly of a two-stage dual-nozzle baffle electro-hydraulic servo valve│ Common faults and troubleshooting methods of two-stage electro-hydraulic proportional directional valves│ Optimization research of medium and low pressure safety valves│ Analysis of the product level of medium-pressure disc traps│ Technical transformation of medium-pressure steam system control valves│ Regulations on setting up safety valves of Sinopec Group Corporation│ Localization of Chinese valves│ Analysis of the current situation of the Chinese valve market│ Structural characteristics of hollow injection discharge valve and its application in hydropower stations │ Analysis of steady and sudden flow fields of centerline butterfly valves │ Analysis of failure characteristics of common brakes not relieving caused by relay valve leakage │ Analysis of failure characteristics of common brakes not relieving caused by relay valve leakage │ Analysis of the impact of internal leakage in low-pressure bypass valves of intermediate reheat units │ Research on opening balance holes in the balls of medium and high pressure ball valves │ Optimization design of medium and high-precision quantitative valves │ Design and simulation study of series ultra-high pressure relief valve │ Reasons and preventive measures for automatic closing of main transformer cooler butterfly valve │ Analysis and treatment of main steam valve noise causes │ Analysis of issues related to cylindrical valves installed in turbines of Uluwati Hydropower Station │ Analysis and modification of causes of butterfly valve lock malfunction in Uluwati Hydropower Plant │ Modification of acetylene generator charging seal valves │ Pipeline flexibility design of double-gate gate valve for ethylene cracking furnace│ Localized development of high-temperature and high-pressure Y-type stop valve for ethylene plant│ Analysis, calculation and selection of relief valve of acetic acid reactor│ Design and control strategy of digital proportional flow control valve for ethanol gasoline│ Research on warm press molding of secondary reheat ultra-supercritical steam turbine valve manifold plate│ Application of secondary air valve on motorcycles│ Analysis of dynamic characteristics and stability of two-dimensional electro-hydraulic proportional reversing valve │ Secondary distillation valve problem handling and standard improvement suggestions │ Application of two-way cartridge valves in electro-hydraulic hammers │ Application of two-way cartridge valve technology and multi-flexible transmission in large rotary kilns │ Analysis and troubleshooting of direction control loop faults of two-way cartridge valves │ Modeling and simulation analysis of two-way proportional flow cartridge valves │ Cloud server and information assembly - DCT250 solenoid valve assembly innovation │ Optimization of spring parameters of downhole series heavy oil pump spool valve │ Application of downhole casing valve in Cai 551 well │ Development of permanent locking tool for downhole casing valve │ Mechanical mechanism design and test of downhole casing valve │ Design and indoor test of downhole casing valve valve core │ Design of air booster system for comprehensive gas testing of downhole safety valve │ Design of underground intelligent choke and throttle valve flow field analysis │ Finite element analysis and structural optimization of wellhead blowout preventer valve │ Discussion on the handle position of the three-position four-way reversing valve in the remote console of the well control equipment │ Discussing the role of the tank truck emergency shut-off valve from an accident │ Discussing the design principles of boundary conditions of the debugging equipment system from the startup noise failure of the gas pressure reducing valve │ Discussing the maintenance and repair process of the vacuum pump from the failure of the slide valve vacuum pump │ Analysis of the selection and application of metal-sealed wear-resistant ball valves from the coal-to-liquids process │ Improving valve product quality based on standardization │ Comparison of instrument valve design specifications and standards │ Bonding diagram method to simulate the transient response of direct-acting relief valves │ Research on the dynamic characteristics of direct-acting cone-type relief valves using transfer function method │ Research on nonlinear correction methods of servo proportional valves │ Potential dangers of shared power supply for servo valves │ Servo valve controlled motor system simulation and PID parameter optimization │ The theory and method of dynamic correction of servo valve flow to improve the performance of electro-hydraulic position system │ Research on phase change temperature control of giant magnetostrictive actuator for servo valve │ Numerical simulation and experimental analysis of servo valve orifice flow field │ Development status of low shear flow control valve │ Discussion on internal leakage analysis and treatment methods of low pressure bypass steam shift valve │ Thoughts and discussions on the air pressure test pressure of low-pressure valves │ Development and application of low-pressure dewatering seal valves │ Design and simulation of low-reversing impact direct-acting nonlinear proportional reversing valves │ Low-leakage valve test standards and applications │ Improved design of regulating spring structure of low-temperature safety valves │ Discussion of valve standards for cryogenic vessels │ Testing and research of cryogenic ball valve stem sealing packing │ Design and application of shut-off valves on cryogenic oil transfer arm emergency release devices │ Discussion on the investment casting process of LCB steel for cryogenic valve bodies │ Several issues in the development of cryogenic valves │ Cryogenic valve selection requirements and performance evaluation criteria │ Cryogenic valves │ Research and analysis of sealing performance of cryogenic valves │ Brief analysis of heat treatment methods of LCB and LCC steel for cryogenic valves │ Design and installation of cryogenic valves │ Research and analysis of cryogenic valve design technology │ Design calculation of the bonnet neck length of cryogenic valves │ Research on the trapezoidal thread tolerance of the cryogenic valve stem│ Improvement of the cryogenic valve bonnet and sealing structure│ Discussion on the neck length of the cryogenic valve bonnet and the installation direction of the cryogenic ball valve│ Valve selection for the water supply pipeline network│ Selection of water pump control valves in the water supply system│ Selection of gate valves and butterfly valves for the water supply system│ Common problems and solutions in the construction of pipe valves in heating projects│ Development of a convenient high-pressure valve changer│ Development and application of portable pilot-operated safety valve online calibrator │ Processing of valve body sealing pair of inverted tilt non-impact check valve │ Application of eccentric semi-ball valve in new acetylene recovery unit │ Eccentric ball valve │ Deflection plate jet servo valve pre-stage flow field analysis │ Experimental analysis of discharge flow pattern of cyclone separator material leg wing valve system of catalytic cracking unit │ Fault analysis of slide valve of catalytic cracking unit │ Configuration of the flue gas turbine inlet valve of the catalytic cracking unit│ Comparison of the performance and structure of two high-temperature gate valves for the catalytic cracking unit│ Valve for the catalytic cracking unit│ Failure maintenance experience of the electro-hydraulic slide valve of the catalytic cracking unit│ Failure analysis of spring breakage of the safety valve of the stabilization tower of the catalytic cracking unit│ Improvement of the pneumatic slide valve of the catalytic cracking unit│ Discussion on the causes of stem abrasion of the double-action slide valve of the catalytic unit│ Failure and analysis of the slide valve of the catalytic unit│ Failure analysis of flue gas pipeline valves in catalytic units │ A new method for installing soft packing of special valves in catalytic units │ Intelligent improvement of the pneumatic motor valve control system of catalytic reforming units │ Structural characteristics of the high-pressure bypass station and high-pressure bypass valve of the 300MW unit of Yuanbaoshan Power Plant │ Analysis of common faults of liquid filling valves │ Analysis of the initial pressure building process of pilot-operated two-way solenoid valves │ Experimental research on valve resistance coefficient of pilot-operated safety relief valves │ Analysis and countermeasures for the backflow of medium from the outlet of the pilot safety valve to the inlet pipeline │ Application of online calibration technology of pilot safety valves │ Selection and application of pilot safety valves in gas transmission stations │ Failure analysis and treatment of pilot safety valves │ Discussion on the application of pilot safety valves │ Design of pilot safety valves │ Flow field CFD analysis of pilot-operated non-static hydraulic pressure relief valves │ Theoretical analysis of the static characteristics of the pilot relief valve │ Simulation and experimental research on the pilot pure water relief valve │ Design of the pilot high-pressure clean water stop valve │ Assembly and installation process of the cylindrical valve of Guangzhao Hydropower Station │ Application of light sprocket in valve chain transmission │ Analysis of the structural characteristics of the brake spool of the full power hydraulic braking system │ Theoretical research on the discharge capacity of the full-open safety valve │ On-site calibration and debugging of the full-open spring safety valve │ Structural and performance analysis of full-lift spring safety valve │ Analysis of internal leakage of full-lift spring steam safety valve │ Research on selection technology of full-capacity LNG storage tank top instrument isolation valve │ Rapid design method of full oil pressure control turbine pressure regulating valve │ Research on performance simulation and structural optimization of liquid-filled valve in full hydraulic braking system │ Analysis and research on the current status of fully welded pipeline ball valve technology │ Selection and quality control of fully welded pipeline ball valve materials │ Selection and quality control of fully welded pipeline ball valve body materials │ Application of fully automatic sector tower bottom valves in coke tower modification │ Structural improvement and optimization of downhole casing valves for underbalanced drilling in the whole process │ Pressure prediction of casing valves for underbalanced drilling in the whole process │ Performance control in the manufacturing of full-scale spring safety valves │ Analysis of the maintenance process of full-scale spring safety valves │ All-metal sealing valve plate │ Design and calculation of six-way reversing valve │ Opinions on the narrow disc of safety valves │ Introduction to the function of spring-type safety valve adjustment rings │ Discussion on the selection of vent control valves │ Technical analysis and test results on valve port design improvement of proportional displacement valves and constant power valves │ Application calculations of oil tank hydraulic safety valves │ Research on power supply transformation of RTU valve chambers of the West-East Gas Pipeline│ Analysis on the transition process when the water purification plant at the end of a long-distance water transmission pipeline shuts down the water valve│ Research on the T-shaped groove strength of the gate valve gate│ Research on the opening control algorithm of the proportional flow valve with a pressure compensator│ Valve positioner control method and implementation with reverse PWM│ Energy-saving water trap│ Design of a hydraulic safety valve with overload protection function│ Discussion on the causes of internal pressure self-sealing valve leakage and selection of design parameters│ Principle and experimental research on the soft cone shell single valve body piezoelectric pump with unequal internal and external tapers │ Application of internal curve pneumatic motor valve actuator on the pump inlet valve │ Visual calculation and experimental verification of pressure distribution on the wall of the internal flow slide valve │ Numerical simulation and structural optimization of the flow field of the internal flow poppet valve │ Design of the built-in full-open combination spring safety valve │ Discussion on the calculation of the spring preload force of the built-in spring parallel gate valve │ Let’s talk about the problem of the handle position of the three-position four-way rotary valve in the remote console of the blowout preventer │ Analysis of the causes of accidents of outdoor flat electric gate valves in winter │ Analysis of oil leakage of impact turbine ball valves │ Treatment of welding forming defects of stamping and forging valves │ Structural characteristics and applications of cold wall slide valves and hot wall slide valves │ Application of chilled resin sand in valve body casting │ Gel valve │ Research and application of jelly valve completion technology │ Analysis of leakage causes and structural improvements of pressure reducing manual proportional pilot valves │ Research on pressure reducing valves and their water saving │ Application of pressure reducing valves in single piston rod hydraulic cylinder speed regulation circuits │ CNC machining process analysis and programming of pressure reducing valve discs │ Measures to reduce vibration and noise of control valves │ Design analysis of temperature reducing and pressure reducing control valves │ Design and calculation of temperature reducing and pressure reducing valves │ Condensate recovery and utilization transformation and equipment selection and benefit analysis │ Selection of condensate recovery methods │ Selection of condensate recovery system traps (1) - performance comparison analysis │ Selection of condensate recovery system traps (2) - selection calculation discussion │ Analysis and comparison of condensate recovery systems │ Analysis and calculation method of energy saving effect of condensate recovery system │ Reasonable recovery and utilization of condensate water │ Several steam condensate recovery methods │ Lug-wafer type and wafer-type butterfly valves │ Analysis of the failure causes of cam deflection valve tie rod fracture │ Production and quality control of outlet low-pressure valve castings │ Issues that should be paid attention to in the design of outlet valve casting processes │ Research on conductance of high vacuum valves during molecular flow │ Fault diagnosis and treatment measures for molecular sieve switching valves │ Failure analysis and treatment of ORBIT orbital ball valves for molecular sieve devices │ Research on the application of shunt and collective valves in the traveling system of frame vehicles│ Discussion on the use of solenoid valves for cut-off valves to achieve relatively continuous control│ Torque measurement device for column pressure valves│ Analysis of overvoltage using the characteristics of arrester resistance valve slices│ Research on key technologies of brake valve maintenance digital systems│ Operation and maintenance of hydrogen production PSA hydraulic programmable control valves│ Analysis, processing and summary of operating faults of PSA programmable valves of hydrogen production equipment│ Application of power flow diagram in modeling of valve-controlled gear clutch│ Performance analysis of power spectrum in fault diagnosis of speed control valve│ Fixture for processing small and medium-sized wafer butterfly valve body shaft hole│ Analysis of processing technology of cylinder head valve seat guide in machining center│ High-precision rotary boring die for processing butterfly valve│ Drilling and boring dual-purpose fixture for processing valve cover hole│ High-efficiency fixture for processing valve cover│ Strengthen safety management in the design, installation and use of safety valves │ Design of DC stop valves for hydrocracking units │ Characteristics and selection of high-pressure valves for hydrocracking │ Application of pneumatic cut-off valves in emergency venting links in hydrogenation units │ Material selection and quality control of valves for hydrogenation units │ Development of high-pressure grade forged steel gate valves for hydrogenation units │ Powered high-speed intake and exhaust valves │ Calculation and analysis of the static characteristics of the power steering gear's composite edge bevel rotary valve │ The influence of the outer circle runout of the power steering gear's rotary valve on the static characteristics │ Calculation method of the time constant of the dynamic pressure feedback servo valve │ Inspection and analysis of the safety performance of metal valves in the chemical industry │ Principles and usage methods of commonly used valves in the chemical industry │ Discussion on the selection of steam traps in chemical production │ Selection and maintenance inspection of safety valves in chemical systems │ Installation and pipeline design of safety valves in chemical installations │ Calculation of the discharge volume of safety valves in chemical installation tower systems │ Selection of commonly used metal valves in chemical installations 6 │ Selection of commonly used metal valves in chemical installations │ Selection methods of commonly used valves in chemical engineering design │ Research on selection methods of commonly used valves in chemical engineering design │ Strategic analysis of selection of commonly used valves in chemical engineering design │ Arrangement of common valves in chemical engineering design │ Analysis of common valve selection strategies in chemical engineering design │ Discussion on the problem of non-vertical installation of regulating valves in fertilizer plants │ Research on matched asymmetric valves to control asymmetric cylinder hydraulic systems │ Matching asymmetric valves to control asymmetric cylinder system characteristics analysis │ Cross-turn valve tray leakage performance │ Research on plate efficiency of cross-turn valve tray │ Processing of semi-automatic ball turning machines and ball valve parts │ Application of one-way plate valves in pneumatic conveying │ One-way metal seal ball valve│ Analysis and research on the influence of one-way valve on the gas flow direction in the double booster gas line│ Characteristics and applications of one-way valve_Peng Xiwei │ Selection of one-way valve glue and antioxidant │ Design of single-seat control valve │ Analysis of soft seal structure design of single-seat control valve │ Exploration and research on the application of single-seat valves in multi-phase media │ Analysis of the influence of single-coil magnetorheological valve core structure on pressure drop characteristics │ Analysis of operation failure of wellhead throttle valve in South Yolotan Gas Field │ Analysis and treatment of clearance problem between horizontal high-pressure main steam valve disc and valve seat │ Analysis of safety valve testing and certification regulations in the Indian Boiler Code │ Purpose and functional principle of unloading safety valves │ Numerical simulation and experimental research on three-dimensional flow field of unloading valves │ Simulation research on dynamic characteristics of constant pressure valves in pressure-flow control systems │ Research on the application of pressure and displacement monitoring systems in the pressure installation of cylinder head guide valve seats │ Calculation of safe relief volume of pressure vessel safety valves │ Correct use and safety technology of pressure vessel safety valves │ Issues that should be paid attention to in the selection and use of pressure vessel safety valves 2 │ Problems and suggestions for safety valves used in pressure vessels │ Correct selection of safety valves in pressure vessel design │ Selection of safety valves in pressure vessel design │ Calculation for the selection of gas safety valves in pressure vessel design │ Pressure piping component manufacturing quality management manual (valve) │ Research on structural improvement of pressure difference negative feedback balancing valves │ Research on the performance of piezoelectric bimorph driven pneumatic servo valve │ Research on control strategy of piezoelectric pneumatic servo valve │ Analysis and improvement of leakage reasons of gas cylinder ball valve for compressed natural gas │ Double valve check valve for compressor │ Axiomatic design of compressor reed valve group │ Failure analysis of compressor valve plate and ion nitriding process │ Design and finite element analysis of fracturing pump valve box without intersecting lines │ Research on the factors affecting the fatigue life of the fracturing pump valve box │ Dynamic simulation of the discharge amount of the safety valve of the crude oil container under fire conditions │ Design and research on the structure improvement of the tilt self-locking valve of the forklift multi-way valve │ Design of the measurement and control system of the forklift control valve test bench │ The solution of using database technology to realize Kingview data storage and data exchange with VB in the forklift valve test bench project │ Experiment and simulation research of dual-active proportional two-way throttle valve │ Double eccentric semi-ball valve │ Design of sealing structure of double eccentric inclined plate butterfly valve │ Application of double eccentric butterfly valve in metallurgical system and related analysis and calculation │ Research on sealing performance of double eccentric butterfly valve │ Design of double eccentric metal seal ball valve_Yu Deshui_Zhang Aiping │ Design of double eccentric metal seal butterfly valve │ Fracture phenomenon and analysis of double-action slide valve fixing bolts │ Numerical simulation and experiment of dual-pressure control pressure reducing throttle valve │ Nonlinear modeling and linearization of double-nozzle baffle servo valve │ Development and industrial application of double-layer solid valve tray │ Application of double-piston effect valve seat and Lipseal sealing ring in LNG cryogenic ball valve sealing │ Double floating pneumatic stop valve │ Application of double solenoid valve configuration in petrochemical equipment │ Research on bistable solenoid valve control method and dynamic performance │ Double coil magnetorheological valve simulation evaluation and performance analysis │ Double coil magnetorheological valve pressure drop characteristics analysis │ Double coil magnetorheological valve structural design and electromagnetic field simulation analysis │ Application of fractal characteristics of bispectral slices in pressure reducing valve fault diagnosis │ Design of bimetallic sheet traps │ Analysis and treatment of oil leakage failure of vibration valve block of tandem vibratory roller│ Design of double gate flat plate gate valve│ Design of double valve seat stop plug valve and contact stress analysis│ Setting of double valves│ Discussion on the design scheme of multi-functional pump with double valve core proportional valve│ Dry plate pressure drop of double valve heavy float valve tray│ Regulation and analysis of the release pressure of double isolation pipeline ball valve cavity│ Dehydrogenation reaction that occurs in the sampling valve of oil-filled power equipment│ Application of sampling valve anti-theft devices│ Research on troubleshooting of pressure swing adsorption (PSA) programmable valves│ Analysis and maintenance of pressure swing adsorption hydraulic programmable valve failures│ Treatment of programmable valve and solenoid valve faults in pressure swing adsorption devices│ Analysis of common faults of programmable butterfly valves in pressure swing adsorption devices│ Discussion of leakage troubleshooting methods in programmable valves of pressure swing adsorption devices│ Research on multiplex flow conversion technology with Yanbian phase shift of the transformer valve side winding │ Design and research of variable hole ball valve │ Application of variable diameter pigging valve on the Yan-Xi product oil pipeline │ Calculation and optimization matching of fatigue life of pressure regulating spring of variable speed control valve │ Fuzzy reliability design of fatigue strength of variable frequency refrigeration compressor reed valve │ Application of variable frequency regulating valve in methanol distillation process control │ Variable frequency speed regulating butterfly valve │ Application of stacked pressure reducing valve and analysis of common faults │ Application of new technology of stacked valves in combination machine tools │ Numerical study of constant flow characteristics of constant flow valve of controllable quantitative dispenser │ Design of wellbore pressure control valve with measurable pressure and valve position │ Selection of main control valve for combustible industrial gas pipeline network │ Adjustable pressure downhole check valve │ Design of adjustable gas pipeline automatic blowout safety valve │ Adjustable valve body inclined hole tire │ Adjustable proportional liquid mixed flow valve │ The application of reliability analysis in improving the assembly qualification rate of safety valve products │ Precautions for the selection of various types of valves │ Reasonable recycling of steam condensate in the device │ The impact of synchronicity on the performance of the "double-cylinder multi-valve" electro-hydraulic vibrating table │ Coaxial transmission valve electric device │ Research and application of back-throw check valves │ Structural design of the outlet combined valve of the governor oil pump of the Xiangjiaba Hydropower Station│ Automatic flushing device and numerical simulation of the flushing process of safety valves for fluids containing solid particles│ Application of nickel-containing materials in flue gas desulfurization valves│ High-pressure liquid filling valve with detectable opening and closing status│ Design of straw-type online sampling valve group│ Summary of condensate recovery and transformation project of Hohhot Petrochemical Company│ Discussion on installation technology of large water inlet ball valve of Xiangshuijian pumped storage power station│ Design improvement of commercial vehicle exhaust brake valve│ Research and Countermeasures on Nozzle Damper Servo Valve Contamination Failure │ Design and Application of Jet Pulse Cleaning Valve │ Four-port Plate Hydraulic Directional Control Valve Installation Surface GB/T 2514-93 │ Reliability Assessment of Four Typical Solenoid Valve Combinations │ Analysis of Capillary Fracture of Four-Way Reversing Valve │ Design of Special Machine for Automatic Expansion of Four-way Valve D Connection Plane │ High Economic Benefit for Recycling Condensate Water │ Analysis of common problems of material return and slag discharge conical valves │ Rotary multi-station brass gate valve assembly machine │ Research on the application of rotary buffer valves in large inertia load systems │ Design of 2D servo valve core displacement step experimental device due to hole type │ Theory research and application of cementing and fracturing pump valves │ Installation and maintenance technology of special butterfly valves for cement trucks │ Analysis of nitrogen drainage technology of fixed gas lift valves │ Fixed metal bellows ball valve │ Processing of fixed ball ball valve 3 │ Structural improvement and application of fixed valve removable oil pump │ Application of solid decoupler in oil and gas pipeline valve chamber │ Analysis of valve switching test of domestic imported 600MW supercritical steam turbine unit │ Research on new domestic intelligent valve positioner │ Design of domestic dilution water valve controller │ Application of the first set of domestic electric high-temperature gate valves in catalytic cracking units │ Successful application of domestic labyrinth valves in offshore oil production │ Comparison and analysis of domestic and foreign safety valve standards │ Comparison and analysis of commonly used valve materials at home and abroad 8 │ Comparison and analysis of commonly used valve materials at home and abroad │ Analysis and comparison of domestic and foreign valve structure length standards 10 │ Current status and prospects of the development of valve locks at home and abroad │ Discussion on the current use situation and management of domestic steam traps │ Foreign safety valve manual (Safety_Valve_Handbook) English│ Foreign nuclear power plant valves│ Research on foreign droplet breaking mechanism and development of new wellhead throttle valves│ Structure and characteristics of foreign descaling valves │ * * Analysis of the standard industrial valve pressure test (GB∕T 13927-2008)│ Internationally used cast steel materials for valve bodies│ Performance research and industrial application of circular fixed valve trays│ Application of dome valves on pulverized coal injection tanks│ Failure analysis and maintenance of dome valves│ Dome valve design│ Regular calibration and methods of in-service safety valves│ Processing the inner surfaces of both ends of the "353 counterflow valve" valve body on a CNC lathe │ Working principle and common fault analysis of pipeline ball valves in use │ Solving valve leakage problems online without stopping production │ Practice of online replacement of wet gas tank blowdown valves │ Innovation and practice of online professional maintenance and management models for electric valves │ Research on air valve fault diagnosis of the secondary mechanism of piston air compressors in subway engineering vehicles │ Discussion on installation and construction technology of combined air valves in subway tunnels │ Selection of valve driving device for type test │ Discussion on Ni-P electroless plating process on the surface of buried earth valve sphere │ Selection and management of valves in urban water supply network │ Summary of life extension methods of urban gas pipeline network valves │ Analysis of valve failure causes and preventive measures on Chengdao Center No. 2 platform │ Dynamic contact analysis of fracturing pump pump valve based on ANSYS/LS-DYNA │ Based on FLUENT Can filling valve valve channel flow field analysis and structural optimization │ Reciprocating compressor air valve failure abnormality monitoring method based on PCA │ Research on digital valve-controlled cylinder position control system based on Proteus │ Research on dynamic performance of electromagnetic ball valve based on 20-Sim │ Design of high-speed CNC punch hydraulic control system based on 2D high-frequency digital valve │ Finite element analysis of high-pressure ball valve sphere based on ABAQUS │ Fluid-structure coupling research based on ADINA hydraulic slide valve │ Simulation analysis of dynamic characteristics of threaded cartridge balance valve based on AMES im │ Modeling and simulation of double-cylinder superimposed valve plate inflatable shock absorber based on AMESim │ Research on dynamic characteristics of inverse proportional relief valve based on AMESim │ Simulation research on electro-hydraulic control valve based on AMESim │ Quantitative analysis of damping hole value in AMESim cartridge relief valve based on AMESim Simulation analysis of F-type π bridge relief valve based on AMESim│ Simulation analysis of HD4070PR automatic transmission main pressure regulating valve based on AMESim│ Matching optimization analysis of pilot valve and multi-way valve based on AMESim│ Modeling and simulation analysis of pressure reducing valve based on AMESim│ Fault simulation research of superimposed relief valve based on AMESim│ Modeling and simulation of fixed difference pressure reducing valve based on AMESim│ Excavator load sensing multi-way valve modeling and simulation based on AMESim│ Analysis of the dynamic characteristics of a certain type of unloading valve based on AMESim│ Modeling and analysis of the proportional relief valve loading system based on AMESim│ Simulation and analysis of the proportional valve-controlled hydraulic cylinder system based on AMESim│ Research on the characteristics of the pneumatic valve-controlled cylinder system based on AMESim│ Research on the pressure cut-off valve of the tractor hydraulic system based on AMESim│ Test and simulation research of electro-hydraulic servo valve based on AMESim│ Research and simulation of flow control of electro-hydraulic proportional directional valve based on AMESim│ Simulation of super magnetostrictive high-speed response electromagnetic switch valve based on AMESim│ Design of safety valve for jig air supply based on AMESim│ High-speed solenoid switch valve cylinder position control based on AMESim│ Optimization design of magnetic circuit structure of fuel injection solenoid valve based on Ansofl│ Multi-physics modeling of proportional solenoid valves based on the combination of Ansoft and AMESim │ Parametric simulation software design of hydraulic poppet valve flow field based on ANSYS APDL and FLUENT Journal │ Finite element analysis of large stainless steel valve bodies based on ANSYS │ Flow field analysis and structural optimization of hydraulic poppet valves based on ANSYS │ Stress and seismic analysis of electric stop valves based on Ansys │ Finite element analysis of drilling pump valves based on ANSYS │ Analysis of leakage problem of thin slagging gate valve based on ANSYS │ Pressure reducing valve fault diagnosis based on AR bispectrum and fractal box dimension │ Pressure reducing valve fault diagnosis based on BP network │ Research on three-eccentric butterfly valve interference analysis software based on C#.NET │ Valve block investment mold design based on CAD/CAM technology │ Design of electro-hydraulic valve controller based on CAN bus technology │ Design of wireless valve position transmitter based on CC2530 │ Denoising of internal leakage acoustic emission signals of oil depot valves based on CCA and WT │ Valve chamber data acquisition system based on CDMA │ Analysis of resistance characteristics of stop valves based on CFD technology │ Numerical simulation analysis of flow characteristics of throttle valves based on CFD technology │ Numerical simulation research on V-shaped orifice plate regulating ball valve based on CFD │ Research and optimization of flow field characteristics of triple eccentric butterfly valve based on CFD │ Research on failure mechanism of triplex piston pump valve based on CFD │ CFD-based simulation study on the flow field characteristics of the jet tube servo valve under different working media │ CFD-based howling analysis of the servo valve armature assembly │ CFD-based flow field analysis and structural optimization of the hydraulic excavator speed switching slide valve flow channel │ CFD-based analysis of the thermal effect on the surface of the hydraulic slide valve core │ CFD-based simulation analysis of the flow field of the flip-float valve │ CFD-based flow field analysis of the throttle valve stab-proof nipple│ Flow field analysis of vehicle-mounted high-pressure pneumatic pressure reducing valve based on CFD│ Research on the influence of valve core neck diameter on the performance of hydraulic poppet valve based on CFD│ Comparison of friction performance of high-pressure multi-way valve micro-groove and pressure equalizing groove valve core based on CFD│ Research on opening and closing parts pressure reducing valve body based on CFX│ Solution based on Client/Server integrated valve design system│ Design and performance research of proportional valve measurement and control platform based on CompactRIO│ Fault analysis of a certain type of equipment relief valve based on DAQ system and virtual instrument │ Design of valve-controlled lead-acid battery condition monitoring system based on DSP2812 │ Research on solenoid valve control method of hydromechanical automatic transmission based on dSPACE │ Design and implementation of high-precision valve controller based on dsPIC30F6014A │ Design of sampling circuit of magnetic valve controllable reactor control system based on DSP │ Research on high-speed switching valve-controlled hydraulic servo system based on DSP │ Dynamic modeling and simulation of anti-reverse valve based on EASY5 │ Research on fault feature extraction of electromagnetic reversing valve based on EMD and AR models │ Performance test of electro-hydraulic servo valve based on FESTO TP511 test bench │ Simulation analysis based on Fluent multiphase flow hydraulic spool valve core friction force │ Simulation analysis based on the flow field of pressure compensation valve in Fluent multi-way valve │ Numerical simulation research on different valve core and valve body combinations based on Fluent│ Research on pressure and flow characteristics of large diameter slide valve based on Fluent│ Numerical simulation of flow field of jet tube servo valve preamplifier based on FLUENT│ Research on digital hydraulic relief valve based on Fluent│ Simulation calculation of flow coefficient of rod pump fixed valve based on Fluent│ Research on hydraulic power of hydraulic servo valve based on Fluent│ Research on the clamping force of the hydraulic spool valve core based on Fluent│ Simulation analysis of the flow characteristics of the spool valve port based on Fluent│ Structural design and flow field analysis of the drip irrigation valve based on FLUENT│ Numerical simulation analysis of the flow field of the main valve of the electromagnetic unloading valve based on Fluent│ Flow field analysis and structural optimization design of the crane hydraulic poppet valve based on Fluent│ Numerical simulation and cavitation analysis of the cone throttle valve based on FLUENT│ Calculation of gas lift valve flow based on secondary development of Fluent software. │ Research on flow-pressure characteristics of micro-flow valves based on Fluent metal rubber │ Research on balance valve characteristics based on F-type π bridge liquid resistance network │ Characteristics analysis of hydraulic high-speed switching valves based on GMA │ Design of CPV valve island control experiment system based on iCAN protocol │ Design of industrial Ethernet communication between multiple PLCs on the pump truck valve block test bench based on IMAP │ Multi-way valve body fatigue test measurement and control system based on LabVIEW │ Design of a fast exhaust valve reliability test bench based on LabVIEW │ Three testing methods and comparisons of proportional valve phase-frequency characteristics based on LabVIEW │ Fully automatic measurement and control system for hydraulic reversing valves based on LabVIEW │ Hydraulic valve comprehensive test bench measurement and control system based on LabVIEW │ Design of a CAT test bench for electro-hydraulic proportional relief valve characteristics based on LabVIEW │ Design of launch vehicle valve test data acquisition system based on LabVIEW │ Valve-controlled hydraulic coupling test system based on LabVIEW sleeve frequency conversion technology │ Modeling and simulation of M8 valve group based on Matlab and AMESim │ Research on electro-hydraulic proportional valve test system based on MATLAB │ Simulation of an electro-hydraulic proportional speed control valve control synchronization system based on Matlab/Simulink │ Development of electro-hydraulic servo valve performance test and monitoring system based on MCGS configuration software │ Application of LabVIEW in overflow valve testing based on Modbus protocol │ Modeling and simulation of pump truck load-sensitive proportional multi-way valve based on Modelica │ Gas cylinder valve type test test system based on Movicon Design and application of solenoid valve parameter testing system based on PCI-1711 │ Design of automatic valve test control system based on PLC and touch screen │ Design of CNC fixture pressure control system based on PLC and high-speed switching solenoid valve │ Design of solenoid valve durability test system based on PLC control │ 40T hybrid magnet low-temperature distribution valve box pressure control system based on PLC │ Design of hydraulic multi-way valve test bench based on PLC │ Based on Pro/Engineer ASSEMBLY's virtual assembly design of piston compressor reed valve │ Finite element analysis of compressor valve plate based on integration of Pro/E and ANSYS │ Finite element analysis of compressor valve plate based on Pro/E and ANSYS integrated environment │ Physical design of the integrated valve block of the main pressure regulating device in the electro-hydraulic proportional measurement and control system based on Pro/E │ Tabletization of valve component parameter families based on Pro/E │ Research on flow characteristics of switch solenoid valves based on PWM technology │ Research and simulation of dynamic characteristics of ESP high-speed switching valve based on PWM control │ Simulation analysis of dynamic characteristics of high-speed switching solenoid ball valve based on PWM control │ Fault diagnosis of reciprocating compressor valve based on RBF neural network │ Research on fault diagnosis of reciprocating pump valve based on RBF neural network │ High-speed electromagnetic switching valve model identification based on RBF network │ Design scheme for inverse calculation of valve body cavity based on RE technology │ Parameterized design and optimization of hydraulic valve based on SimHydraulics │ Simulation research on dynamic characteristics of pneumatic switch solenoid valve based on Simulation Design of three-way valve for water cooling system based on TRIZ │ Process design and processing of plastic spherical valve based on UG │ Research on CAD system of automatic flow balancing valve mold manufacturing process based on UG │ Software development of electro-hydraulic servo valve measurement and control system based on USB2828 data acquisition card │ Valve design verification program based on VB │ Based on V * Design of aircraft servo valve test data acquisition system based on bus technology │ Gas valve leakage detection system based on ZigBee technology │ Noise reduction of pump valve vibration signals based on an improved lifting scheme │ Research on vibration waveforms of valve core rotary electro-hydraulic exciters based on different valve port shapes │ Development of automatic adjustment system for thermal expansion valve based on binary value search method │ Fault analysis and optimization of hydraulic control loop of roller changer device based on two-way cartridge valve │ Valve service research based on cloud manufacturing and 3D printing │ Application of boosting system in valve testing based on industry-university-research collaborative innovation │ Research on high-temperature valve opening control based on servo system │ Quantitative liquefied gas loading based on distributed loading batch controller, PLC and hydraulic diaphragm control valve │ Explosion valve design method based on functional logic combination │ Analysis of discharge conditions of distillation tower safety valve based on dynamic simulation │ Research on precision cylinder driven by piezoelectric proportional valve │ Design of high-frequency fatigue test system based on dual-displacement valve-controlled exciter │ Concept design of ball valve based on extension engineering method │ Industrial valve gas leakage monitoring method based on image processing │ Valve leakage online detection system based on acoustic emission technology │ Quantitative diagnosis technology of valve internal leakage rate based on acoustic emission detection │ Research on valve leakage detection and calibration method based on acoustic emission │ Research on high-pressure valve air tightness detection system based on external pressure differential method │ Quality control of valve stem production process based on multi-variety and small batches │ Valve electric device controller based on multi-microprocessor │ Design and research of positive and negative pressure leakage detection system based on multi-way valve │ Diesel engine valve clearance identification based on wavelet analysis and neural network │ Analysis of internal leakage signal of natural gas pipeline valve based on wavelet threshold │ Calculation of oil tank breathing valve gas flux based on peak conservation method │ Design of valve sequential opening and closing device based on differential planetary gear mechanism │ Optimal design of electro-hydraulic servo valve based on amplitude margin │ Design of intelligent sampling valve for aviation oil tank based on fingerprint recognition │ Selection of gate valve electric transmission device based on vibration and noise │ Design and optimization of variable pressure side force hydraulic control system based on cartridge valve │ Reciprocating compressor valve fault diagnosis based on support vector machine │ Gas valve fault diagnosis based on improved Mallat algorithm and envelope curve │ Research on vibration signal denoising method based on improved wavelet threshold │ Research on parameters of reciprocating compressor intake valve based on numerical simulation │ Research on design parameters of piston compressor exhaust valve based on numerical simulation │ Modeling analysis of vacuum differential pressure casting system based on digital combination valve │ Automatic detection system based on intelligent valve positioner │ Proportional valve modeling and parameter identification based on least squares method │ Structural design of hydrogenation valve body based on finite element technology │ Development of air conditioning stop valve defect detection system based on machine vision │ Research on the precision of brake valve spring tester based on standard deviation │ Research on optimal control technology of electronic expansion valve based on fuzzy PID controller │ Hydraulic valve controlled motor speed system based on fuzzy neuron control │ Converter valve cooling control system based on fuzzy adaptive PID │ Filling valve based on cylinder pressure curve_leakage_Cause analysis_Xu Gentao │ Analysis of the cause of "leakage" of the liquid-filled valve based on the cylinder pressure curve │ Research on the temperature characteristics of the slide valve based on fluid-solid thermal coupling │ Research on the throttling characteristics of the shock absorber recovery valve based on fluid-solid coupling analysis method │ Modeling of the power mechanism of the valve-controlled hydraulic cylinder based on flow approximation │ Research on AMT clutch modification based on the automatic control mechanism of the flow valve │ Numerical simulation of the flow field of the wet clutch pressure regulating valve based on the immersed solid method │ Repair research of proportional servo valve based on hydraulic test bench │ Design and simulation of new piezoelectric ceramic direct drive valve based on hydraulic micro-displacement amplification structure │ Design of ZJFJ-2 test bench hydraulic system based on valve test for hydraulic support │ Streamline design of axial flow check valve core and flow resistance coefficient analysis based on source-sink method and mathematical analysis method │ Experimental research on low-pressure casting liquid level pressure control system based on electric-pneumatic proportional valve │ Design and simulation based on electrorheological fluid reversing valve │ Research on electrohydrostatic loading system based on direct-acting digital valve │ Optimal design of continuous wave generator rotary valve based on correlation coefficient │ Research on main steam valve closing strength based on transient dynamics │ Diesel engine valve leakage diagnosis method based on instantaneous speed bispectral analysis │ Research on knowledge-based valve rapid design method │ Modeling and research on temperature control valve driven by paraffin materials │ Servo valve driver based on magnetic shape memory alloy │ Modeling and simulation of servo valve based on magnetic shape memory alloy driver │ Needle valve body extrusion grinding process model based on neural network │ Application analysis of end face seal in solenoid valve development │ Rapid design of series valve products based on structural design unit │ Safety valve test displacement data processing based on cluster mining │ Accurate calculation method of safety valve displacement based on back pressure correction │ Electronic expansion valve PID controller parameter tuning based on adaptive DE algorithm │ AGC system based on adaptive wavelet threshold method │ Based on steam trap wall temperature and internal leakage diagnostic simulation research │ Solenoid valve comprehensive characteristic measurement and control system based on virtual instrument technology │ Low-temperature valve performance testing device based on computer data collection │ Design of spinning machine hydraulic system based on load-sensitive multi-way valve │ Modeling and simulation of pulse jet switching valve based on super magnetostrictive actuator │ CNC machining of needle valve joints based on turning-milling compound center │ Reliable control of electric valves by DCS based on communication │ Optimal design of valve-controlled motor speed regulation system based on genetic algorithm │ Feasibility study of main steam flow calculation based on valve position │ Stress concentration analysis based on valve design │ Analysis of dynamic characteristics of valve-controlled cylinder system based on impedance control │ Liquid valve fault diagnosis based on non-sampled lifting wavelet packet and singular value decomposition │ Multi-objective optimization design of static characteristics of load sensing proportional valve based on non-dominated sorting genetic algorithm │ Research on characteristics of high-speed switching solenoid valve based on amorphous iron core │ Research on accurate control of balanced air cylinder pressure based on high-speed switching valve │ Research on shift clutch oil pressure control based on high-speed switching valve │ Research on control algorithm of hydraulic AGC system based on high-speed switching valve │ Research on electronically controlled automobile auxiliary braking system based on high-speed switching valve │ Research on electro-hydraulic vibration impact system based on high-speed switching valve │ Multi-hydraulic cylinder position coordination control system based on high-speed electromagnetic switching valve │ Fault diagnosis of relief valve based on high-order spectrum and support vector machine │ Application of plastic gas valves on reciprocating hydrogen compressor │ Discussion of tower system safety valve configuration and economics │ Simulation and research of boosted threaded cartridge relief valve │ Application of incremental digital valve in DCT main pressure regulation control system │ Design and analysis of incremental digital valve │ Application of acoustic emission technology in valve shell quality control │ Application of acoustic emission technology in valve inspection │ Failure analysis of special valves in the pulverized coal transportation system in Shell coal gasification unit and its localization progress │ Application of composite solid lubricating film in electric valve transmission devices │ Development of composite ceramic control valves │ Control modification of complex control gas line regulating valves │ HYSYS dynamic simulation of the relief valve release process of complex pressure vessels│ External thread stainless steel stop valve (CB1010-90) │ External thread steel right-angle stop valve (CB596-90) │ External thread aluminum alloy right-angle stop valve (CB563-68) │ External thread gate valve structural design │ Hybrid neural network prediction model of hydraulic valve characteristics under the influence of multiple geometric elements │ Development of multi-functional reducing electric three-way valve │ Multi-function stop valve │ Fault analysis and treatment of multi-function check valve │ Application of multi-function water pump control valve in PSP pipeline water supply project │ Application of multi-function water pump control valve in water supply pumping station │ Application of multi-function water pump control valve in water pump system │ Application of multi-function water pump control valve in sewage pumping station │ Application of multi-function water pump control valve and its head loss problem │ Performance and application of multi-function water pump control valve 2 │ Performance and application of multi-function water pump control valve │ Test and application of water hammer characteristics of multi-function water pump control valve 3 │ Analysis of the cause of fracture of the pressure plate on the diaphragm of multi-function water pump control valve │ Multi-function pump recirculation automatic regulating valve │ Design of multi-function ball valve and its transmission mechanism │ Multi-function electronically controlled valve test bench │ Development and application of multi-function water supply ball valve │ Failure analysis and treatment of multi-nozzle coal water slurry gasifier lock bucket system │ Application of multi-nozzle pressure relief valves │ Development of multi-turn valve intelligent electric actuator transmission mechanism │ Calculation of safety valve relief in polysilicon distillation tower systems │ Research on aerodynamic noise prediction of multi-stage sleeve control valves │ Design research of multi-stage sleeve control valve silencer and vibration reduction components │ Analysis of the causes and treatment measures of cavitation in multi-stage pump pressure relief valves │ Structural optimization design of multi-stage pressure regulating magnetorheological valves │ Design and analysis of multi-stage damping sampling valve structure │ Design of multi-stage pressure reduction and high pressure difference regulating valve │ Calculation of release volume under external fire conditions of multi-component liquid container safety valve │ Optimization calculation method of multi-way reversing valve flow path_Algebraic stress model │ Research on the application of multi-channel valve-controlled hydraulic system in engineering machinery │ Design of multi-rotating intelligent valve electric actuator control system │ Determination of the sealing surface width of multi-way rotary distribution valve │ Anti-friction structure of multi-way valve end seal Large diameter bellows stop valve│ Structural design of large diameter liquid hydrogen vacuum stop valve│ Large diameter ball valve body welding process│ Large diameter marine bottle head valve design│ Large diameter butterfly valve dynamic water shut-off test and analysis│ Pressure test plan for large diameter butterfly valve special-shaped valve plate│ Research on large diameter butterfly valve torsion rejection test device│ Large diameter butterfly valve disc sealing surface measurement tool│ Control of welding deformation of large diameter butterfly plate of large diameter butterfly valve│ Design of large diameter butterfly valve body│ Effect of stiffness of large diameter butterfly valve parts on performance│ Pre-vulcanized rubber lining process of large diameter butterfly valve│ Development of large diameter ultra-high temperature butterfly valve│ Welding of large diameter gate valve body and end flange│ Design of large diameter high pressure difference regulating valve│ Design of large diameter high temperature and high pressure Y-shaped stop valve│ Comprehensive test bench for large-tonnage hydraulic forklift electro-hydraulic control valves │ Performance comparison of large storage tank breathing valves │ Analysis of technical characteristics of large-scale engineering machinery fully hydraulic steering flow amplification valves │ Design of large-scale quick-closing pneumatic butterfly valves │ Development trend of supporting valves for large-scale complete sets │ Optimal design of structural parameters of valve halls of large converter stations │ Research on new energy-saving technologies for large check valves │ Problems and maintenance of safety valves in large ammonia plants │ Dynamic performance analysis and seismic research of large mixed gas pressure regulating valve│ Medium pressure butterfly valve for large thermal power units│ Fluid-solid coupling analysis of large gas regulating valve│ Casting of large heat-resistant cast iron valve plate│ Treatment of deflection deformation of large butterfly valve guide column│ Design and development of main steam valve of large supercritical thermal power station│ Application of large water inlet butterfly valve in hydropower station│ Analysis of failure reasons of large cast stainless steel valve body│ Repair of large gate valves│ Development and application of electro-hydraulic servo proportional control quick-closing adjustment device for large explosion-proof butterfly valves│ Simulation study of large wind turbine valve-controlled motor pitch load simulator│ Numerical simulation of flow characteristics of large-scale high-pressure steam valves│ Numerical analysis of dynamic stress of regulating stage blades under different valve sequence conditions of large-capacity steam turbines│ Research and development of large-flow dual-active dual-electric feedback electro-hydraulic proportional plug-in throttle valves│ Simulation research on dynamic characteristics of large flow safety valve │ Research and design of measurement and control system for large flow safety valve test bench │ Simulation research on servo screw mechanism of large flow digital valve │ Diagnosis method of leakage failure of large flow mixed gas control valve │ Research on pressure stabilization servo control system of large flow mixed gas regulating valve │ Daniudi Gas Field Station 29^# - Tayu No. 2 Valve Chamber Pipe Network Working Condition Adjustment │ Analysis of Damage Causes of Hydraulic Support Safety Valve on Large Mining Height Working Faces│ Structural improvement of large blast furnace gas pressure regulating valve group │ Discussion on mercury removal factors in natural gas JT valve throttling refrigeration process │ Design and maintenance of control valves in natural gas purification plants │ Flow field analysis and coupling stress field calculation of natural gas distribution pressure reducing valve │ Research on partial stroke test of shut-off valve of natural gas compressor equipment │ Design of natural gas drainage valve │ Design of natural gas hydrate sampler ball valve structure and application of air bag │ Correct use and maintenance of natural gas traps │ Setting of the valve group in and out of the natural gas station │ Numerical simulation study on the pressure characteristics of the flow field in the natural gas pipeline drain valve │ Structural characteristics of the natural gas pipeline ball valve and issues that need to be paid attention to during use │ Maintenance and troubleshooting technology of the natural gas pipeline ball valve │ Research on the acoustic emission signal characteristics of the internal leakage of the natural gas pipeline valve │ Research progress in acoustic emission detection methods and key technologies for internal leakage of the natural gas pipeline valve │ Design and experimental research of the acoustic emission detection system for internal leakage of the natural gas pipeline valve │ Discussion on valve technology and structural characteristics of natural gas pipelines│ Optimization and improvement of synthetic process gas vent valves in natural gas units│ Analysis of internal leakage of valves in natural gas transmission and distribution systems and countermeasures│ Importance of setting up cut-off valves in natural gas inlet and outlet pipelines│ Maintenance and maintenance of valves in long-distance natural gas pipelines│ Position control and simulation analysis of cartridge valve cores in compactor hydraulic systems│ Application of jacket valves in polyformaldehyde devices│ Development of sleeve-type high-temperature and high-pressure solenoid valves│ Casing constant pressure relief valve│ Rolling processing of austenitic stainless steel valve stems│ Development of austenitic stainless steel high-pressure hydrogenation valve castings│ How to improve the service life of safety valves│ How to correctly adjust the electric device of the valve│ How to determine the contact surface between the gate valve plate and the valve seat│ Safety instrument system cut-off valve online stroke test│ Containment isolation butterfly valve detection│ Safety spherical check valve│ Reasons why the safety valve does not reset and countermeasures │ The difference between safety valves and relief valves │ Overview, definition and difference between safety valves and relief valves │ Combination application of safety valves and bursting discs │ Discussion on the calculation method of two-phase flow of safety valves │ Design and feasibility analysis of safety valve sensors │ Several issues and preventions that should be paid attention to when using safety valves │ Problems and discussions in the use and calibration of safety valves 4 │ The pressure and temperature of the exhaust steam at the outlet of the safety valve │ The exhaust steam pressure and temperature at the outlet of the safety valve │ Renovation of the isolation valve installed at the safety valve │ Research on the calculation method of equivalent sealing area in safety valve pressure adjustment │ Troubleshooting and troubleshooting of safety valves and their springs 1 │ Calculation of the effective area of the valve seat in online calibration of safety valves │ Analysis of the online calibration process of safety valves │ Online calibration technology of safety valves │ Online detection of safety valves 2 │ Application of safety valve online detection technology 2 │ New analysis of the formula for calculating the effective area of the valve seat in online adjustment of safety valves │ Online adjustment technology of safety valves │ Treatment of safety valve failure 1 │ Several issues that need to be paid attention to in the installation design of safety valves │ Discussion of periodic calibration plans for safety valves 5 │ Two issues with periodic calibration of safety valves 2 │ Simple repair methods when safety valves are not closed tightly │ Discussion on the dynamic stability of safety valve operation│ Analysis and treatment methods of common safety valve failures and unqualified calibration│ Analysis and treatment of common safety valve faults│ Brain elimination method of common safety valve faults│ Application of risk assessment technology in safety valve delayed verification│ Numerical simulation of the impact of safety valve opening height on its discharge capacity│ Analysis of safety valve spring failure causes and improvement measures│ Analysis of safety valve spring fracture causes│ Stress verification of safety valve springs│ Stress verification research of safety valve spring │ Safety valve performance inspection technology 2 │ Safety valve performance automatic test system 3 │ Brief analysis of safety valve technical issues │ Maintenance and improvement of safety valve guard 1 │ Safety valve discharge pipe bracket design 7 │ Safety valve discharge pipe bracket design │ Safety valve discharge calculation and others 3 │ Comparison of two calculation methods for safety valve exhaust 3 │ Safety valve exhaust pipe analysis 7 │ Research on safety valve exhaust capacity test │ Analysis and expansion of Fanno curve in safety valve exhaust calculation │ Calculation method of thermal parameters in safety valve exhaust calculation │ Calculation and analysis of safety valve exhaust volume 7 │ Comparison and analysis of relevant standards and regulations for safety valve displacement │ Improvement of safety valve take-over orifice │ Uncertainty assessment of safety valve set pressure calibration │ Safety valve set pressure selection table │ Discussion of common problems in safety valve calibration and maintenance │ Eight clear and eight-step working methods for safety valve calibration and maintenance │ Design of buffer tank for safety valve calibration bench 2 │ Design and finite element analysis of key components of the safety valve calibration robotic arm │ Error analysis and rational selection of pressure gauges for safety valve calibration │ Information management of safety valve calibration 3 │ Analysis of risk identification and management and control ideas in the process of safety valve calibration │ Risk identification and control in the process of safety valve calibration │ Analysis and calculation of safety valve relief conditions │ Analysis of the setting of the cut-off valve on the safety valve relief pipeline │ Experimental research on acoustic emission detection of safety valve leakage │ Safety valve leakage prevention and repair 2 │ Simulation and experimental research on the flow field and displacement of the safety valve_Jiang Shenghan_Wang Yuxiang_Li Xiaozhong 3 │ Research on optimization of safety valve flow test displacement data │ Discussion on engineering algorithm of flow resistance coefficient of rotary switching valve for safety valves │ Classification and fault analysis of safety valves │ Online adjustment of safety valves │ Installation, use, maintenance and troubleshooting of safety valves │ Periodic inspection of safety valves 3 │ Working principle and setting verification of safety valves │ Common faults and troubleshooting methods of safety valves │ Safety valve performance guarantee - American safety valve inspection and management practice │ Safety valve failure analysis 3 │ Safety valve failure analysis │ Safety valve calibration and maintenance │ Safety valve inspection and maintenance │ The correct use of safety valves and safety technical requirements 3 │ Safety valve leakage and countermeasures │ Safety valve characteristics and use and maintenance │ Safety valve characteristic curves and tests │ Theoretical calculation of safety valves │ Back pressure of safety valve and design of discharge pipeline │ Calculation and selection of safety valve 12 │ Selection and use of safety valve 4 │ Selection and use of safety valve │ Selection and installation of safety valve │ Selection of safety valve and selection of main parameters 2 │ Selection of safety valve and selection of main parameters │ Selection of safety valve and process calculation 16 │ Comparative study of steady-state and transient numerical simulation technology of safety valves│ Research on new technologies for steady-state displacement testing of safety valves│ Application analysis of safety valve system design│ Structural analysis and optimization design of safety valves│ More accurate calculation of safety valve specifications│ Safety valve calculation example 9│ Safety valve test and its equipment│ Analysis and research of safety valve test regulations and its test equipment│ Design of safety valve test equipment│ Numerical simulation research on transient dynamics of safety valve overpressure relief │ Analysis and testing of dynamic parameters of safety valve overpressure relief process │ Control of safety valve operation reliability │ Importance of regular calibration of safety valves 3 │ Safety valve piping design │ Calculation of pressure inside the safety valve 2 │ Safety valve stem cutting processing simulation and parameter optimization │ Calculation of the rated relief volume of the safety valve 5 │ Calculation of the rated discharge capacity of the safety valve │ The quality of domestic valves used in the blast furnace system of Baosteel Phase II Project │ Analysis and comparison of electro-hydraulic servo valves used in Baosteel's rolling mill HAGC system │ Development of H-type offset zero-opening IEI liquid pulse control servo valve to realize vibration excavation of hydraulic excavators │ Large sample diagram of outdoor water supply valve well │ Design of switch gun pressure valve for household high-pressure cleaners │ Energy-saving benefits of closed steam condensate recovery system │ Application of closed steam condensate recovery energy-saving technology │ Improvement of light-load quick-lowering valve of 5m^3 bucket capacity hydraulic loader bucket │ Revision opinions on TSG ZF001-2006 "Safety Valve Safety Technical Supervision Regulations" │ Analysis and treatment of a boiler safety valve leakage and water leakage accident │ Discussion of the breaking force of low-temperature break-off valves │ Wafer and lug wafer check valves │ Selection of rubber seat hardness for wafer butterfly valves │ Wafer butterfly valve plate surface turning tool holder │ Split packing gland │ Several suggestions for the design and use of spring-type safety valves │ Discussion on improving the sealing characteristics of spring direct-acting safety valves │ Improvement of the structure of mechanical breathing valves for oil tanks │ Research on modeling of symmetrical four-way valve-controlled hydraulic cylinders │ The application of symmetrical proportional directional valve control asymmetric cylinder in the automatic adjustment of the straightening machine roll gap │ Suggestions on temperature classification of valve operating temperature below 425℃ │ Research on the incident of incorrect shutdown of GOV valve in the West-East Gas Pipeline caused by lightning interference │ Development and application of double ball fixed valve for guidance and centering │ Analysis and improvement of sealing failure of airway check valve for missiles │ Optimization design of jet deflection plate servo valve amplification stage │ Research on the return valve of the jet self-priming sprinkler pump │ Modeling and simulation of the pre-stage of the jet tube servo valve │ Comparison of the jet tube type electro-hydraulic servo valve and the nozzle baffle type electro-hydraulic servo valve │ Research on the jet tube type electro-hydraulic pressure servo valve │ Further development of the small diameter center line rubber-lined butterfly valve │ Research on the sealing technology of the small bellows valve │ Preliminary research on the reliability growth test of the small solenoid valve │ Improvement of the discharge valve in the small automatic feeding system │ Assembly technology of the assembled valve seat of the small gate valve │ Analysis of influencing factors of the torque of the small high-pressure ball valve and its control measures │ Optimization design of the main steam valve of the small high-efficiency steam turbine │ Modification and selection of the pressureless outflow valve of the small hydropower station │ Development of the electric device for small-torque multi-turn nuclear-level valves │ Improvement of the safety valve for urea │ Damage forms and protection of cut-off valves for urea │ Technical transformation of urea system control valves │ Application of shielded permanent magnet stepper fully enclosed motors on electric gate valves │ Quality assurance in the manufacturing process of Ling'ao Phase II nuclear power safety valves │ Selection of line cut-off valve actuators for Sichuan-East Gas Transmission Pipeline Project │ Analysis of corrosion failure of FF-NL gas production wellhead valves in Sichuan-Chongqing Gas Field │ Selection of check valves in industrial and power pipelines │ Assembly welding of industrial steam turbine cylinders and valve bodies │ Research on supersonic flame spraying of industrial steam turbine valve stems │ Current standards for industrial process control valves │ Research on intelligent pneumatic valve positioning controllers for industrial boilers │ Some problems in the application of industrial valves in petrochemical plants │ Optimal design of industrial valve electric devices │ Analysis and optimization of steam turbine DEH valve control performance under working conditions_Zhao Weizheng.caj │ Application of air valve to prevent water hammer when stopping pump in engineering │ Research on fuzzy PID controller of electro-hydraulic proportional valve control system of engineering machinery │ Research on the characteristics and application of electro-hydraulic proportional valve of engineering machinery │ Standards for low-emission valves in engineering design │ Key points for selecting process valves in engineering design │ Selection of solenoid valves in engineering design │ How to propose automatic control conditions for control valves in engineering majors │ Special installation requirements for process valves on process pipelines │ Clever modification of valves - ordinary valves become automatic valves │ Design of differential pressure stop check valves │ Application of differential flow adjustable shuttle valves in ball valve control devices │ Obvious gap - the valve industry urgently needs to improve innovation capabilities │ Application of Sisway HD741X-VK butterfly valve in Wuxi River Hydropower Plant │ Speed control of TRT units with and without starting valves │ Nuclear grade swing check valve with position indicator │ Application of pressure leakage plugging technology in the treatment of external leakage of power plant valves │ Simulation and analysis of dynamic characteristics of pressure reducing valve with safety valve function │ Externally threaded bronze right-angle stop valve with bottom flange (CB598-90) │ Specification for high-pressure air right-angle stop valve with bottom flange (CB592-96) │ Application of balancing valve with bypass oil circuit in construction machinery │ Simulation analysis of pilot-operated electric/pneumatic proportional valve with high-speed switching valve │ Specification for high-pressure air right-angle stop valve with check valve (CB584-1995) │ Research on the dynamic characteristics of long pipeline high-frequency response valve control system with accumulator │ Safety design of turbine governor with pressure regulating valve control │ Improvement and design of emergency shut-off valve with overflow valve│ Predictive iteration with forgetting factor * Research on the application of control in valve-controlled asymmetric cylinder systems │ Analysis and application of acoustic characteristics of valve body opening changes of silencers with valves │ Analysis and countermeasures for scratches of flat gate valves │ Processing of flat valve body guide grooves │ Design of balanced sleeve pressure reducing valves │ Failure analysis and improvement measures of balanced safety valve bellows cracking │ Balanced ball valves │ Development and design of balanced pipeline plug valves │ The use of balance valves in the hydraulic system of shearers │ The influencing factors of balance valves on the jitter phenomenon of crane hoisting systems │ Application of CAD technology to develop new valve products │ Analysis and optimization design of flow characteristics of high-frequency reciprocating pumps using one-way valve flow distribution │ Numerical simulation of gas-solid flow characteristics in a U-shaped valve using a two-fluid model │ Fault diagnosis method of electromagnetic reversing valves using time series bispectral analysis │ Application of neural network technology to realize data processing in valve design │ Application of thin coating activation technology (TLA) to evaluate the erosion of high-temperature and high-pressure condensate gas well throttle valves │ Test analysis of bottom valve filter resistance coefficient │ Analysis of spring fracture failure of waste heat boiler safety valve │ Analysis of damage causes of waste heat boiler bypass butterfly valves │ Analysis and treatment of damage causes of waste heat boiler bypass butterfly valves │ Theoretical analysis and experimental research of delay valves │ Delayed coking device coking tower bottom valves and tower top valves │ Analysis and treatment of leakage problems of high-temperature plug valves used in delayed coking units │ Failure analysis of high-temperature anti-coking ball valves in delayed coking units │ Characteristics and applications of high-temperature anti-coking ball valves in delayed coking units │ Measures to extend the service life of valve-regulated lead-acid batteries │ Research on the positioning system of switching solenoid valves to control hydraulic actuators with inertia loads │ Simulation analysis of magnetic field and elongation of super magnetostrictive actuators for switching valves │ Research on the opening control method of the throttle valve at the wellhead of abnormally high-pressure gas wells│ Butterfly valve with arcuate butterfly plate│ Analysis of rubber sealing conditions of elastic sealing gate valves│ Design of elastic metal hard-sealed eccentric semi-ball valves│ Analysis of design characteristics of elastic valve seat gate│ Elastic disc type stop valve│ FMECA analysis of spring full-lift safety valve│ Laser quenching of the disc sealing surface of spring full-lift safety valve│ The influence of spring stiffness and other factors on the back-seat pressure difference of safety valves (1) │ The influence of spring stiffness and other factors on the back-seat pressure difference of safety valves (2) │ Common faults of spring safety valves and their solutions │ Selection, installation, use and troubleshooting of spring safety valves │ Analysis and discussion of online setting technology of spring safety valves │ Analysis of common faults of spring safety valves │ Displacement and opening height of spring safety valves │ Maintenance and verification of spring-type safety valves │ Common problems and countermeasures for lead seals of spring-type safety valves │ Improvement of spring-type safety valve seat processing technology │ The impact of spring-type safety valve ball opening height on displacement │ Design of spring-type quick-closing butterfly valves │ Analysis and discussion of online setting technology of spring-type flexible disc safety valves │ Several measures to strengthen the use and management of safety valves │ Design and research of shape memory alloy action element trap valve │ Analysis of causes affecting the opening of the rear column control valve and improvement measures │ Causes and countermeasures affecting the flushing effect of delayed self-closing toilet flush valve │ Research on transient characteristics of the valve of the reciprocating compressor air volume adjustment system │ Reciprocating compressor valve technology │ Reciprocating compressor valve failure analysis and maintenance │ Reciprocating compressor valve failure simulation experiment and diagnostic research │ Dynamic study of the air inlet valve during the stepless adjustment process of reciprocating compressor air volume│ Case analysis of reciprocating compressor air valve failure│ Research on optimal design method of reciprocating compressor air inlet valve│ Theoretical study of the movement rules of reciprocating compressor inlet valve│ Analysis of the outlet one-way poppet valve angle of the reciprocating oil and gas mixed pump│ Numerical simulation of the flow field of the reciprocating oil and gas mixed pump combined valve│ Unsteady simulation analysis of the flow field of the reciprocating oil-gas mixed pump combination valve│ Design and testing of the new rotor valve group of the reciprocating pump│ Analysis of the spring motion stress of the reciprocating pump valve│ Calculation of the strength of the reciprocating pump valve│ Harmonic wavelet packet analysis and LS-SVM method research on the reciprocating pump valve│ Selection of circulating cooling water valves and internal parts materials│ Improvement of the control circuit of the circulating water pump outlet check butterfly valve│ Modification of the circulating pump outlet butterfly valve control system │ Experimental research and numerical simulation of the regulating characteristics of the circulating fluidized bed U-shaped valve │ Cold test analysis of the causes of J valve vibration in the circulating fluidized bed boiler │ Analysis of micro high-reliability ultra-high-pressure solenoid valve technology │ The impact of throttle valve action on annular pressure in micro-flow controlled pressure drilling │ Microcomputer-regulated valve electric device │ Leakage analysis of Dresser 1700 spring-loaded safety valve │ Design of quick-opening butterfly valve │ Butterfly valve for quick shut-off │ Design and application of quick shut-off blind valve │ Design of handwheel mechanism of pneumatic piston linear stroke device for quick shut-off valve │ Quick exhaust valve │ Analysis of motion characteristics of quick relief valve │ How to avoid failure of steam trap │ Research on water temperature control system of thermostatic mixing valve │ Research on design of bimetallic sheet assembly of cantilever type bimetal trap │ Selection and application of regulating valve actuators for refined oil pipelines │ Brief analysis of steam balance and condensate recovery in our plant │ Current status and prospects of hydraulic valves for construction machinery in my country │ Current status and analysis of high-end valves in my country's thermal power plants │ Current status and development trends of my country's valve industry │ A new starting point for the development of valves in my country's food industry │ Simulation analysis and research on flow optimization of stop check valves │ Improvement of stop valve repair technology │ Analysis of stop valve failure cases │ Analysis of the reasons for the breakage of the stop valve │ Stress calculation and analysis of the welded valve seat of the stop valve │ Testing and research of the stop valve characteristics │ Design of the spherical disc of the stop valve │ Three-dimensional parameter design of the stop valve │ Analysis of the cause of the stop valve packing leakage and fire │ Design of the full blocking sealing structure of the stop valve │ Improvement of the machining process of the stop valve bonnet │ Computer-aided design of the middle cavity and middle flange of the flat valve │ Connection between hand brake valve and trailer hand brake valve │ Analysis and improvement of hand brake valve failure mode │ Improvement of mechanical transmission part of manual open sector gate valve │ Development of integrated leakage monitoring terminal for manual valve chamber │ Structural improvement of manual rack gate valve │ Combining manual and automatic programming to improve the processing efficiency of hydraulic valve body │ Development and application of hand-hydraulic integrated flat plate valve │ Repair and verification of safety valves commonly used in pressure-bearing special equipment │ Simulation study on suppressing starting overshoot of helium pressure reducing valve│ Experimental study on hydrogen sulfide-resistant high-strength jelly valve│ Design of air extraction check valve│ Quality control in the processing of giant ball valves for pumped storage units│ Analysis and countermeasures of causes of steam flow excitation of extraction regulating valve│ Sealing modification of oil pump fixed valve group│ Optimization of ball seat sealing cone angle of oil pump fixed valve group│ Application of forced closing fixed valve of oil pump in highly deviated well section │ Analysis of reasons for fracture of oil pump plunger opening valve cover and improvement measures │ Field test application of oil pump drain valve │ Optimization study of oil pump valve ball density │ Stress calculation and failure analysis of oil pump valve cover │ Valve block assembly for leakage detection of oil passage holes in tractor gearbox │ Rapid inspection device for opening pressure of tractor hydraulic distributor safety valve │ Gongbei Water Plant 120,000 m3/d water production process valve renovation │ Pressure-maintaining pressure relief valve │ SLV series one-way valve for excavator cooling system │ Research on multi-way valves in excavator working equipment │ Research on spool control characteristics of excavator shift valve │ Key technologies for the development of high-pressure multi-way valves for excavators │ Discussion on the modification plan of the reversing valve of the excavator traveling hydraulic system │ Squeeze casting hydraulic valve body │ Reasonable use of reversing valves in hydraulic systems │ Experimental study on the performance of high-flow low-pressure proportional valves for shift control │ Insulation analysis of the outlet device of the valve-side bushing of the converter transformer │ Failure analysis of the local excessive temperature of the valve-side bushing of the converter transformer │ Calculation and analysis of the DC lead on the valve side of the converter transformer │ Calculation and analysis of the electric field at the end of the polarity reversal test of the valve-side winding of the converter transformer │ Calculation and analysis of the polarity reversal transient electric field at the end of the valve side winding of the converter transformer │ Design of the grounding switch for the valve hall of the converter station │ Calculation of the relief valve discharge amount under the condition of heat exchanger tube rupture │ Guarantee of the structural dimensions of the blowdown valve bonnet casting │ Slag removal_Development of dual-purpose gate valves for throttling │ Research on the impact of smoke exhaust valve settings on the centralized smoke exhaust effect in tunnels │ Research on the double-spool electronic hydraulic control system of excavators │ Analysis of dynamic performance of threaded cartridge balancing valves for boring machines │ Discuss the techniques for selecting commonly used valves in chemical design │ Discuss faults and solutions caused by the mode of action of regulating valves │ Application of proximity switches in butterfly valve control loops │ Development of throttle valves for controlled pressure drilling│ Fixture design and CNC program design of the main control valve body│ Selection of control system DO cards and solenoid valves│ Application of control valves in PTA devices│ Selection of control valves in chlor-alkali chemical production│ Application of control valves under harsh working conditions│ Prevention and control of vibration and noise of control valves│ Test methods for control valve discharge capabilities│ Casting process of control valve bracket │ Modular design of control valve │ Definition evolution and conversion derivation of control valve flow coefficient │ Detailed analysis of control valve valve body │ Control valve selection calculation method │ Calculation of control valve flash and cavitation phenomena and blocked flow │ Research on the relationship between throttle valve opening and throttle pressure in pressure-managed drilling │ Design of throttle valve core contour curve for pressure-managed drilling │ Analysis and solutions for the breakage of bulldozer servo valve brake pads │ Experimental research on improving the displacement coefficient of the pilot full-lift safety valve │ Principles and methods to improve and ensure the integrity rate of steam traps │ Improving the reliability of safety valves │ Measures to improve the performance of electro-hydraulic reversing valves │ Valve management to improve the efficiency of air cooling units │ Methods to improve the service life of control valves and deal with common faults │ Measures to improve the service life of ultra-high pressure valves │ Simulation research on improving the performance of high-speed switching valves │ Development and application of plug-in direct-reading anti-freeze blocking constant pressure relief valve │ Application of gate valve and dome valve combination in pneumatic conveying system │ Simulation test of gas medium flow characteristics during the opening and closing process of gate valve │ Structural optimization of flow-displacement characteristics of cartridge water inlet valve core │ Integrated design of pilot control stage of cartridge valve │ Application and maintenance of the cartridge valve in the hydraulic balance system of the medium plate rolling mill │ Application of the cartridge valve in the wide and thick plate shear │ Performance analysis of the cartridge valve in the hydraulic three-roller plate rolling machine │ Application of the cartridge valve in the hydraulic system of the lifting mechanism of the portal bucket wheel stacker and reclaimer │ Application of the cartridge valve in the hydraulic system of the static pressure molding line │ Application of the cartridge valve type accident pressure distribution valve in Tianshengqiao Hydropower Plant │ Installation and disassembly of cartridge valves│ Simulation study on the erosion effect of sand-carrying liquid flow on desander needle valves│ Structure and principle of expandable metal seal valves│ Structural design of expandable hard-sealed ball valves│ Numerical simulation of the impact of operating parameters on the flow behavior of N valves│ Research on control valve buffer structure│ Design and application of multi-way rotary valves that support pilot oil line distribution│ Change DRP control logic to solve ABS valve body noise│ Experimental research on improving the sealing characteristics of spring direct-acting safety valves│ Transforming the condensate recovery system to reduce energy consumption│ Research on the performance advantages and structure of digital pressure valves│ Electrical system design of digital multi-functional plug valve durability testing device│ Application of digital explosion-proof proportional multi-way valves in support trucks│ Design and application of digital flow valves│ Research on the characteristics of digital hydraulic cylinder valve cores│ Application and maintenance of digital valve controllers│ The application of mathematical modeling ideas in valve design calculations │ Introduction to CNC fully automatic needle valve body large end surface super-precision grinder │ CNC horizontal boring machine for valve body bore processing │ Application of CNC lathes in the valve industry │ Introduction to CNC needle valve body ball head fully automatic forming grinder │ Numerical simulation research on the casting process of the integral multi-way valve body │ Design of the pneumatic control valve for the integral car slope start assist system │ Number of files.txt │ Dynamic and static simulation analysis of new pilot-operated non-static water pressure relief valves │ Simulation research of new piezoelectric high-speed switching valves │ Analysis of new double-layer caged throttle valves │ New double-gate gate valves │ Development and application of new controllable multi-functional bottom valve oil pumps │ Performance of new fixed valve trays │ Dynamic performance simulation and analysis of new large-flow safety valves │ Development of a new safety valve seat grinding mechanism│ Dynamic analysis and simulation optimization of the internal flow field of a new rotating high-speed switching valve│ Numerical simulation and experimental research on the performance of a new flexible valve disc│ Research on the low-temperature flow characteristics of a new proportional speed control valve│ The structure and principle of a new turbine water inlet ball valve│ Development and application of a new sand settling and well cleaning valve│ Development and testing of a new oil layer protection valve│ Calculation and analysis of the lag angle of the outlet ball valve of the new oil-gas mixed pump │ Structural design of the new hydraulic reversing valve │ New hydraulic torque limiting valve │ Design and simulation of the new electronic proportional flow control valve │ Pressure calculation and experimental research of the new electro-hydraulic shift control valve │ Simulation and experimental research of the new solenoid valve type shock absorber │ New pneumatic valve actuator │ New magnetorheological hydraulic servo valve test system controller design │ Research on new water-saving valves │ New film-type pneumatic rubber-lined diaphragm valve │ Optimized design of new negative pressure air path control valve device │ New ultra-high pressure unloading valve │ Analysis of movement patterns of new rotor-type oil and gas mixed pump outlet ball valve │ Numerical simulation analysis of flow field of new articulated one-way valve │ Numerical simulation of new tin bronze alloy valve body │ New valve - PIC valve │ Application of new valves in reservoir water release system │ Numerical study of gas jet at the valve port of new high-pressure electric-pneumatic servo valve │ Design of self-sealing structure of new high-temperature and high-pressure valves │ New text document.bat │ Design and application of new powdery material discharge valve │ Technical transformation of double-valve filter in Xinhe Water Plant │ Application of new valve maintenance technology in Sichuan-East Gas Pipeline │ Three-dimensional numerical simulation study of the flow field of the kelly plug valve │ Three-dimensional finite element contact analysis of the kelly plug valve │ Research on the pressure testing device of the kelly plug valve │ Flow field analysis and structural optimization of the swing check valve │ Swing check valve test bench │ Analysis and treatment of the spalling corrosion of the lining of the plug valve │ Optimization and application of the opening resistance torque of the plug valve │ Plug valve manual planetary gear transmission device │ Function and application of plug valve │ Structural improvement and strength check of plug valve │ Several issues in plug valve design and calculation │ Design calculation of plug valve channel │ Simulation analysis of abnormal sound of excess flow valve of rotary drilling rig │ Research on gas content distribution of rotary float valve tray │ Application of rotary valve in refining and chemical plants │ Research on hydraulic characteristics of rotary valve mud pulser rotor │ Characteristics and application trends of rotary valves │ Development of wear-resistant wing valves for cyclone separators │ Characteristic analysis of one pump multi-pressure circuit without pressure reducing valve │ Design and application of unpowered air-locking ash discharge valve │ Packing-free permanent magnet transmission valve │ Application of bottom valve drainage in thousand-meter wellbore drainage system │ Analysis of the application of non-destructive testing technology in the design of liquefied petroleum gas storage tanks│ Overflow-free solid valve plate hot water tower heat and mass transfer characteristics│ Performance measurement of non-wear check valves│ Working characteristics and structural parameters of valveless piezoelectric microfluidic pumps│ Structural design and finite element analysis of valveless micro-pumps│ Design and research of nitrogen chambers of valveless gas-liquid combined impactors│ One of the new ideas for water-saving technology of valveless filters│ Research on the characteristics and detection system of Hitachi FMV servo valve │ Analysis of the effectiveness of the combination of ordinary gas valves and PEEK gas valves │ Application of smart valves in energy saving of circulating cooling water in petrochemical enterprises │ Research on intelligent membrane pressure reducing valves │ Characteristic correction method of intelligent control valves │ Research on the application of intelligent proportional valve control electro-hydraulic actuators │ Research on intelligent hydraulically controlled slow-closing butterfly check valves │ Development of intelligent valve electric actuator controllers │ Design of hydraulic control system for intelligent completion downhole flow valve│ Comparison of intelligent valve positioners and non-intelligent valve positioners│ Discussion on the application of intelligent valve positioners in melamine plants│ Research on control methods of intelligent valve positioners│ Improvement of intelligent valve positioner control algorithms│ Conventional modes and basic components of intelligent valve positioners│ Application and maintenance of intelligent valve positioners│ Pneumatic components of intelligent valve positioners│ Research and development of intelligent valve positioners │ Design of intelligent valve positioners │ Design of asymmetric one-dimensional fuzzy controllers for intelligent valve positioners │ Research on the application status of concealed stem manual flat valves │ Several issues related to the use of safety valves │ The "Control and Measurement" column of this journal is looking for scientific papers on regulating valves and actuators │ Design and application of machine card composite tools in complex valve body processing │ Simulation research on mechanical feedback proportional valve position control systems │ Use and maintenance of mechanical breathing valves│ The influence of oil pump pressure limiting valve core on flow stability│ Application of electromechanical hydraulic technology in automatic pressure-maintaining hammer-type hydraulically controlled butterfly valves│ Analysis and research on air leakage phenomenon of large-flow pressure reducing valves in locomotive braking systems│ Design of lever differential pressure piston pilot-operated bell-shaped float trap│ Design of lever-type butterfly valve opening and closing structure│ Determination of two main parameters in the structural design of lever-type butterfly valves│ Calculation of the maximum back pressure rate of the lever piston bell-shaped float trap │ Application of barcode technology in the safety valve calibration system │ Excavation construction technology of butterfly valve chamber of Songgaoluo Hydropower Station │ Development and application of plate-type concentrated material distribution valve │ Plate-shaped valve core rotary four-way reversing valve │ Improvement of the valve management link of a 600MW steam turbine DEH system_Zhu Pengbo.caj │ Establishment and simulation of a mathematical model of a certain two-way proportional flow valve │ Solutions to common faults of a certain type of pressurized water reactor RHRS electric gate valve │ Simulation study of a certain type of digital hydraulic cylinder valve core covering form │ Development of a certain type of rotary direct drive servo valve │ Design of a certain type of hydraulic solenoid valve test system │ Cause analysis and solutions for abnormal solenoid valve signal feedback for a certain type of ship firefighting system │ Analysis and troubleshooting of relief valve failure of a certain type of equipment │ Design of a certain type of aircraft brake servo valve performance test device │ Design of a certain type of aircraft brake pressure reducing valve test bench │ Certain type of aircraft brake pressure servo valve oil contamination and control │ Design of a certain type of aircraft electro-hydraulic servo valve detection system │ Estimation of the wear life of a certain large diameter slide valve │ Design and construction of grouting reinforcement treatment for the sleeve valve pipe on the ground of a certain industrial factory │ Analysis of the layout form and hydraulic inflection point characteristics of a certain mini-car's hydraulic load-sensing proportional valve │ Analysis of the reasons for the fracture of the fastening stud of a certain hydrogen pipeline valve │ Research on rectification measures for internal leakage of the drainage system valve of Unit 10 of a certain thermal power plant │ Reliability optimization of the heating fluid control valve of a certain thermal power plant │ Renovation of the return valve of a circulating fluidized bed hot water boiler of a certain thermal power plant │ Renovation of the safety valve of a 130t/h circulating fluidized bed boiler of a certain power plant │ Analysis of the causes of valve stem breakage in a power plant │ Analysis of replacement performance and structural safety of valves in a certain piping system │ Analysis of the necessity of a stop valve in a wheeled vehicle's posture adjustment system │ Design and adjustment method of adjustment tooling for a load-sensing proportional valve in a light truck │ Research on factors affecting the electromagnetic force of a high-speed electromagnetic switch valve │ Collision analysis of a diesel injection valve │ Research on the wear resistance of the cone coating of a diesel exhaust valve │ Closing starting point and feedback control strategy of solenoid valve in diesel engine fuel system│ Test and calculation analysis of high-pressure leakage of diesel engine needle valve coupling_Liu Sheng│ Application of standard operations in the assembly of two-position three-way ball valves│ Technical analysis of calibrating high-temperature and high-pressure steam safety valves│ Analysis of fatigue performance of nuclear first-level electric stop valves│ Development of electric pressure relief valves for nuclear first-level pressure regulators│ Nuclear first-level high C_Development of v-value swing check valve │ Calculation method of discharge pipeline parameters of open safety valve in nuclear power reheat system │ Research on discharge capacity verification method of high-pressure safety valve in nuclear power plant │ Overspeed analysis of jamming of medium-pressure butterfly valve in nuclear power steam turbine │ Design of nuclear power hydraulic control check butterfly valve │ Analysis and treatment of corrosion causes of butterfly valve disc in seawater system of nuclear power plant │ Casting process of nuclear power plant blasting valve body │ Chattering phenomenon and solutions of spring-type safety valves used in nuclear power plants│ Design of nuclear-grade check valves used in nuclear power plants│ Development and access conditions of nuclear-grade valves used in nuclear power plants│ Design of nuclear-grade air valves used in nuclear power plants│ Research on valve configuration optimization for waste resin replacement systems of nuclear power plant desalters_Wang Liang_Li Yi_Yang Zhao_Xie Yang_Chen Zhihui │ Nuclear power valve market prospects │ The influence of nuclear power valve silencer seats on the flow field during stable operation │ Test identification of nuclear power valves │ Analysis and research on the stress and deformation of the experimental support seat for the nuclear power high-pressure main steam valve control seat │ Design of nuclear-grade M-type pneumatic straight-through diaphragm valves │ Design and calculation of nuclear-grade pressure reducing valves │ Seismic analysis of nuclear-grade manual eccentric ball valves │ Design calculation of nuclear grade butterfly valve│ Performance indicators and industry standards of metal bellows for nuclear grade valves│ Quality inspection of nuclear grade valve manufacturing process│ Analysis of fatigue resistance of nuclear grade valves│ Simulation analysis of seismic test of nuclear grade valve pneumatic actuator│ Seismic test research of nuclear grade valve electric actuator│ Seismic analysis and test of nuclear grade valve electric actuator│ Research on protection test of nuclear grade valve electric actuator│ Nuclear grade valve electric device │ Seismic test research on nuclear grade valve driving device │ Determining diesel engine failure based on the emissions of the power indicator valve │ Comparative analysis of numerical simulation of the flow characteristics of shuttle check valve and swing check valve │ Comparative analysis of fluid-structure coupling characteristics of shuttle check valve and swing check valve │ Research on the flow field characteristics when the shuttle check valve is closed │ Research and analysis of the working performance of shuttle check valve │ Numerical analysis of water hammer protection characteristics of shuttle check valve │ Magnetic field analysis of shuttle check valve core displacement magnetic sensor │ Discussion on the application of trapezoidal guide float valve tray in high-sulfur natural gas processing equipment in northwest Sichuan and low-load operation │ Calculation of the tensile cross-sectional area of trapezoidal thread valve stem │ Failure analysis of elliptical regulating butterfly valve │ Theoretical calculation and analysis of the opening and closing force and torque of wedge elastic gate valve │ Design of wedge wear-resistant plug valve │ Calculation of the body cavity size of wedge gate valve oblate valve body │ Plastic fonts for valve casting in mold processing │ Technology of modular valve column multi-dimensional chromatography system for analyzing refinery gas │ Application of load-sensitive variable pump and electronically controlled proportional multi-way valve in modular drilling rig hydraulic system │ Simulation analysis of motion of the adjustable mechanism of mode selection valve │ Application of modal synthesis method in valve modal analysis │ Application of fuzzy mathematics in valve fault diagnosis │ Recovery of steam condensate in rubber plants │ Application of check deluge valves in fire protection engineering │ Application analysis of check valves in gas engineering design │ Impact of check valves on water hammer in water supply systems │ Improvement and processing of check valve rocker shaft hole structure │ Structural reform of check valves │ High-level energy storage test method of check valves │ Discussion on several technologies for selecting check valve types │ Experimental study on dynamic characteristics of positive opening 2D digital servo valve │ Correct understanding of control valve seat leakage │ Application of stepper motors in valve welding devices │ Application of proportional servo valves in aluminum strip and foil rolling mills │ Robust output feedback control of proportional pressure reducing valves │ Computer-aided analysis of dynamic characteristics of proportional pressure valves_Wu Liangbao│ Discussion on test indicators and standards for proportional pressure/flow valves│ Design of proportional cartridge pressure reducing valve and its application in injection molding systems│ Design of proportional directional valve performance test system│ Acquisition and fitting of flow characteristic data of proportional directional valves│ Characteristic testing and experimental modeling of proportional flow valves│ Design of proportional relief valve characteristic testing and analysis system│ Valve coil current detection technology in proportional solenoid valve PWM driver│ Research on flow hysteresis modeling method of proportional solenoid valve │ Structural and static analysis of proportional adjustment pneumatic valve │ Operation of proportional valve in the material rake hydraulic system of mixing reclaimer │ Design and analysis of proportional valve controlled electro-hydraulic correction system │ Research on response characteristics of proportional valve controlled steering system │ Research progress of proportional valve electro-mechanical converter │ Application of proportional valve │ Design and experimental study of linear bidirectional electromagnet of proportional valve │ Calculation of the relief area of gas-liquid two-phase flow safety valve │ Remote control solenoid valve for gas well wellhead │ Development and application of large-size selection valve in gas fire extinguishing │ Free float check valve for gas │ Design and analysis of main valve of continuous circulation sub-section for gas drilling │ Design and analysis of continuous circulation sub-section bypass valve for gas drilling │ AMESim simulation and test of air brake load-sensing proportional valve │ Research and evaluation of performance testing system of pneumatic brake hand control valve │ Application of pneumatic three-way ball valve in continuous crystallization process transformation │ Self-excited vibration of pneumatic pilot solenoid valve │ Transformation measures of pneumatic ash discharge ball valve │ Design and application of pneumatic double-acting position-keeping switch valve │ Analysis of the application of pneumatic cut-off valve in Su 14 block │ Development of pneumatic slag discharge butterfly valve │ Analysis of air consumption of pneumatic control valve and design of gas storage tank│ Research and application of pneumatic test rotary valve performance│ Constant stress accelerated life test of pneumatic electromagnetic reversing valve│ Research on comprehensive performance testing system of pneumatic solenoid valve│ Design of pneumatic DC cut-off plunger valve DN32│ Pneumatic slow opening and quick closing ball valve│ Pneumatic butterfly valve│ Application and analysis of pneumatic butterfly valve in extra heavy oil wastewater treatment│ Pneumatic valve body car fixture design │ Automatic switching mechanism between manual and pneumatic valves │ Development and application of energy-saving technology for pneumatic valve positioners │ Analysis of common faults of pneumatic valves │ Special automatic drain and drain valve for the air box of air cushion belt conveyor │ Calculation of the force of air flow on the valve disc │ Effect of gas-liquid ratio on the lag angle of the ball valve of the rotor-type oil and gas mixed pump│ Gas source quality - guarantee of the life of pneumatic valves │ Gas cylinder valve type test test system │ Research on gas cylinder valve type test details │ Discussion of gas cylinder valve standards │ Gas cylinder valve leakage and solutions │ Gas cylinder valves * * Discussion on standards │ Comparative study of new and old standards for gas cylinder valve type testing │ Analysis and research on air tightness test methods of gas cylinder valves │ Failure risk assessment of safety valves in service at gas field wellheads │ Design of valve cover stamping progressive die │ Experimental research on gas valve fault diagnosis │ Design of fluoroplastic lined safety valves │ Design of fluoroplastic lined butterfly valves │ Fluorine rubber hot air butterfly valves │ Research on the outlet temperature characteristics of on-board pneumatic pressure reducing valves for hydrogen energy vehicles│ Analysis of the mechanism and characteristics of on-board ultra-high pressure pneumatic pressure reducing valves for hydrogen energy vehicles│ Improvement of long barrel discharge valves for alumina seed troughs│ Application of zinc oxide non-linear resistance valves in oil-immersed transformers│ Structural improvements of pressure reducing valves for oxygen busbars│ Analysis of the reasons for fracture of the connection studs of the air inlet valve on the top of the oxygen spherical tank│ Special valves for oxygen pipelines│ Discussion on the combustion and explosion mechanism of oxygen valves and pipelines │ Discussion on the selection of oxygen valve materials and piping design │ Application and improvement of high-pressure control valves for ammonia synthesis liquid level │ Research on the dynamic characteristics of the opening and closing process of nitrogen-type water hammer relief valves │ Customized testing and troubleshooting of nitrogen-type water hammer pressure relief valves │ Application and maintenance of nitrogen-type water hammer pressure relief valves │ Failure analysis of stainless steel instrument valves in vinyl chloride devices │ Structural design and material selection of chlorine valves │ Analysis of oil distribution valves for underwater hydraulic impactors │ Design research of underwater hydraulic control valves │ Analysis of natural gas hydrate generation in underwater tree throttle valves │ Research on the application of underwater gate valves in underwater production systems │ Research on reliability design of underwater valves │ Optimization design of coaxial parallel double springs for underwater valve actuators │ Analysis of underwater valve types and design solutions │ Application of water hammer pressure relief valve in long oil pipelines │ Hydraulic control valve │ Research on the opening and closing mode of hydraulic floating ship lift water filling and discharge valve │ CFD analysis of hydraulic decoking three-way valve flow channel structure │ Orthogonal design and analysis of hydraulic bridge of hydraulic servo valve │ Design research of microcomputer control of hydraulic digital throttle valve │ Application and structural optimization of hydraulic test plugging valve │ Application of plugging valve for hydraulic pressure test in once-through boiler reheater system│Application analysis and structural improvement of hydraulic pressure test valve│Technical development and application of hydraulic pressure test valve│Principle and design calculation of water seal check valve│Development and application of horizontal well open hole segmented fracturing casing pressure valve│Research on type selection of water pump outlet valve water delivery system using pneumatic surge chamber│Numerical study of electromagnetic field of water hydraulic digital valve│ Design and research on key technologies of water hydraulic throttle valve │ Research and design of hard-sealed ball valves for coal-water slurry conditions │ Application of double solenoid valves in coal-water slurry gasification safety interlocking system │ Special valves in coal-water slurry gasification process │ Operation analysis of localized valves for coal-water slurry gasification slag water system Sun Dehao │ Selection of oxygen cut-off ball valves in coal-water slurry gasification equipment │ Design of automatic maintenance manipulator for ball valves in hydropower stations │ Development of large-diameter butterfly valves for hydropower stations │ Structural analysis of butterfly valves in hydropower stations │ Combined application and common faults of speed regulators and pressure regulating valves in hydropower stations │ Solutions to several problems with water pipeline valves │ Analysis and treatment of twitching faults of the main pressure distribution valve of hydropower generator speed regulators │ Research and development technology of hydraulic turbine cylindrical valves │ Application of vapor-liquid two-phase traps in boiler couplings │ Development of automobile lift valve test bench │ Automobile hydraulic load-sensing proportional valve │ Key technology of electronically controlled valves for automobile air-conditioning swash plate variable displacement compressors │ Research on overflow cut-off characteristics of emergency shut-off valves for automobile tankers │ Factors in contamination of automobile throttle valves and correct maintenance │ SBBLDL25 load sensing electro-hydraulic proportional control multi-way valve for automobile cranes │ Realization of remote access to multi-way valve monitoring and intelligent fault diagnosis system of truck crane│ Comparison of balance valves of truck crane hoisting mechanism│ Failure analysis and improvement of valve seat screw fracture of steam turbine medium pressure regulating valve│ Processing method of valve cover bushing of steam turbine medium pressure regulating valve│ Deep hole processing of steam turbine main steam valve disc│ Selection of steam turbine heating and extraction safety valve│ Research on the boring process of the main valve seat hole of the steam turbine reheat main steam regulating valve│ Research on the processing method of the steam turbine reheat main steam valve disc│ Steam turbine bypass system and valve selection│ Steam turbine valve control│ Analysis and treatment of steam leakage from the steam turbine unit medium pressure main steam valve stem│ Analysis of the causes of fluctuations in the steam turbine regulating valve│ Analysis of unloading of the steam turbine inlet valve│ Optimization of steam turbine valve body casting process │ Calculation of steam turbine valve stem leakage amount │ Analysis and optimization of steam turbine valve flow characteristic curve │ Simulation of steam turbine valve management and optimization of flow opening function │ Analysis of causes of valve stem fracture of steam turbine high-pressure main steam valve │ Research on rough machining process plan of steam turbine high-pressure solid valve body │ Thermal economic analysis of internal leakage of steam turbine high-pressure bypass valve │ Exploration on modification and optimization of broken valve stem failure of steam turbine high-profile gate│ On-site inspection and static test before installation of the settling-regenerator center wing valve│ Development of multi-functional check valve for oil wells│ Research and design of oil pressure control valve (OCV) performance experimental bench│ Research on characteristics of oil and gas suspension external mechanical induction damping valve│ Research on flow capacity of oil, gas and water three-phase throttle valve│ Simulation and analysis of the characteristics of small flow proportional throttle valves in oil and gas lubrication systems│ Experimental research on the influence of oil temperature on the pressure of the quantitative pump relief valve system│ Failure analysis of pilot safety valves in natural gas stations of oilfield companies│ CFD calculation and analysis of the flow field of poppet valves in reciprocating polymer injection pumps used in oil fields│ Technical application of transforming manual gate valves into quick shut-off valves in oil tank farms│ Analysis of the principle and application of oil tank drainage valve groups│ Design and application of oil tanker PV valve pipeline anti-blocking device │ Reliability optimization of hydraulically controlled butterfly valve at the outlet of circulating water pump in open-air coastal power plant │ Analysis of pressure relief valve action characteristics │ Application of pressure relief valve in product oil pipeline │ Design of pressure relief valve pressure relief delay and alarm │ Selection analysis and application of pressure relief valve │ Seat tightness of pressure relief valve │ Flange, threaded and welded metal ball valves │ Flanged and welded metal plug valves │ Flanged cast steel seawater stop valve (CB/T3196-95) │ Optimized design of surge valve sealing performance │ Numerical simulation of two-phase flow field on bellows-guided float valve tray │ Application of bellows-sealed stop valves in food factories │ Bellows-sealed ball valves │ Working principle of bellows differential stop valves and its application in heat exchange units │ Calculation of static characteristics of bellows steam pressure reducing valve │ Research on bellows ball valves │ Sealing structure of bellows valves and its influencing factors │ Inspection and testing of bellows valves 3 │ Inspection and testing of bellows valves │ Design calculation and finite element analysis of gas injection valves │ Modification of water injection pump valve seats and valves │ Development and application of low shear flow control valves in polymer injection processes │ Pump steam trap│ Troubleshooting of water supply gate valves in pumping station technology and its system transformation│ Simulation and analysis of dynamic characteristics of pumping station relief valve models│ Research on key technologies of APS systems in pump and valve manufacturing enterprises│ Test plan for the impact of pump valve springs on the performance of petroleum fracturing pumps│ Mathematical model and verification of piston-type self-operated three-way valves│ Fuzzy reliability design of piston refrigeration compressor valve springs│ Review of research on reed valves of piston refrigeration compressors│ Technical transformation of piston compressor air valves│ Application of piston pulse valves in bag dust collector injection systems│ Piston-type high-pressure mud valves│ Technical transformation of material level control valves in fluidized bed large particle urea devices│ Development and application of flow direction indicating single flow valves│ Triple eccentric butterfly valves for flow catalytic cracking processes│ Design and application of streamlined non-magnetic anti-leakage pump and valve assembly│ Discussion on the description method of flow servo valve in hydraulic system simulation│ Research on dynamic and static characteristics of flow feedback type electro-hydraulic proportional directional valve│ Application of flow control valve in pressure control system│ Analysis of application of flow control valve in intelligent completion│ Control and application of flow control valve to Nanshan terminal LPG process│ Application of flow amplification valve in full hydraulic steering system│ Experimental research on characteristics of flow amplification valve│ A brief analysis of the maintenance and repair of pilot-operated water hammer pressure relief valves │ A brief analysis of safety valve selection and design │ A brief analysis of the detection method and troubleshooting of quantitative water mixing valves │ A brief analysis of the application of rotary valves in refining and chemical plants │ A brief analysis of the replacement construction technology of underground well valves in refining and chemical enterprises │ A brief analysis of the application principles and improvement plans of two-stage ball valves in automatic loading systems │ A brief discussion of the determination of the relief volume of safety valves in LNG cryogenic storage tanks │ A brief discussion on the setting pressure settings of safety valves for pressure vessels │ A brief discussion on valve quality management in large coal chemical engineering projects │ A brief discussion on several problems existing in safety valves │ A brief discussion on the main reasons affecting the sealing of spring-type safety valves │ A brief discussion on the selection of oil pipeline valves │ A brief discussion on the reliability of safety valves │ A brief discussion on the working principles and selection of several steam water delivery valves │ A brief discussion on the settings and applications of safety valves in chemical projects │ A brief discussion on the abnormal fuel injection of the transformer pressure relief valve│ A brief discussion on the maintenance and debugging methods of the 4117-KIT speed control valve of the syngas compressor turbine│ A brief discussion on the foreign gate valve body lathe│ A brief discussion on the reduction of maintenance costs of PCV valves in natural gas stations│ A brief discussion on the installation and setting of safety valves in petrochemical industry and pipelines│ A brief discussion on the common faults and maintenance methods of safety valves│ A brief discussion on the calculation of overpressure relief of safety valves│ A brief discussion on the transformation of the valve positioner of the urea plant │ A brief discussion on the correct selection of safety valves for industrial boilers │ A brief discussion on the impact of liquid-carrying media on compressor valves │ A brief discussion on the selection and use of control valves │ A brief discussion on the special requirements for control valves in new coal-water slurry gasifiers │ A brief discussion on the use of liquid-controlled one-way valves │ A brief discussion on the procurement requirements for cryogenic valves │ A brief discussion on the selection of safety valves for oil refining units │ A brief discussion on the use and selection of steam traps │ A brief discussion on the application of butterfly valves in chlor-alkali enterprises │ A brief discussion on the application of gravity valveless filters in water treatment │ A brief discussion on reciprocating compressor air valves with PEEK valve materials │ A brief discussion on two types of adjustment and fault analysis of valve positioners │ A brief discussion on the application of valve actuator fieldbus control systems in crude oil reservoirs │ A brief discussion on the causes of valve leakage and the optimization of design selection │ A brief discussion on the relationship between valve selection and maintenance costs_Feng Weizhong│ A brief discussion on the issues that should be paid attention to when selecting valves│ A brief discussion on the issues that should be paid attention to when selecting valves_Cai Shiji │ A brief discussion on the troubleshooting and cause analysis of the technical water supply pressure reducing valve of the Yamadu Hydropower Station │ A brief discussion of the causes and preventive measures of valve leakage │ A measuring tool for measuring the crotch width of the gate valve body │ The design of a measuring device for measuring the space size of the valve seat │ The application and improvement of the floating programmable ball valve in the S Zorb device │ The latest application research progress of the float valve tray │ Structural design and material selection of butterfly valves for seawater desalination │ Design of throttle valves for seawater │ Technical analysis and research of marine riser filling valves │ Application of energy-dissipating flow regulating valves in the Daliang Reservoir water release project of the Beiguan Line of the Yellow River Diversion Project to Shanxi Province │ Analysis of casting crack defects of fire hydrant valves │ Elimination of sand hole defects in large-diameter valve body castings │ Research on electro-hydraulic proportional valve electromagnets for turbochargers │ Fluent fluid dynamics analysis and optimized design of liquid filling valve │ Multifunctional pressure reducing valve for liquid pipeline │ Structure and analysis of rotary flow control valve of hydraulically driven polymer injection pump │ ANSYS finite element analysis of the effect of hydraulic force on reversing valve │ Influence of hydraulic force on vibration characteristics of poppet valve │ Actual measurement of transient motion of main spool of hydraulic multi-way valve │ Application of hydraulic clamping device in high temperature and high pressure valve pump testing │ Design and discussion of hydraulic flat plate gate valves│ Application of hydraulic reversing valves on marine cranes│ Design and application of hydraulic plate rotary valves│ Analysis of malfunction of hydraulic spectacle valves│ Analysis of domestic production status and engineering application of LNG cryogenic valves│ Selection and application of cryogenic ball valves in LNG export stations│ Development and research of top-mounted fixed ball valves for LNG│ Research on top-mounted fixed ball valve for LNG_Zhang Qingshuang_Jiang Bo_Wang Sifang_Mao Bowei │ Selection of cryogenic ball valves for liquefied natural gas Song Liang_Wang Xiu_Cheng Honghui 3 │ Multifunctional pump protection valve for liquefied natural gas │ Ultra-low temperature valves for liquefied natural gas │ Analysis and research on valve inspection standards for liquefied natural gas │ Liquefied natural gas valves and low-temperature performance test equipment │ Determination of several parameters in the calculation of safety valves for liquefied gas storage tanks │ Solutions to spring breakage of safety valves for liquefied gas tank cars │ Analysis of reasons for spring breakage of safety valves for liquefied gas railway tank cars │ Liquefied balloon tank process design and safety valve calculation │ Liquefied gas tank vehicle safety valve and its pressure leak plugger │ Process calculation of liquefied petroleum gas storage tank safety valve │ Hydraulic control valve performance experiment in hydraulic transmission teaching │ Simulation analysis of the opening characteristics of the hydraulic pilot poppet valve │ Numerical simulation and analysis of the internal flow field of the hydraulic impactor flow control valve │ Hydraulic multi-way reversing valve test process working oil port control │ Research on the material structure and performance of gray cast iron valve body of hydraulic multi-way valve│ Research on the failure mechanism of hydraulic balance valve damping hole clogging│ Material selection analysis of hydraulic stop valve core│ Analysis of bucket rod circuit design in multi-way reversing valve of hydraulic excavator│ Development of full electro-hydraulic comprehensive testing system for hydraulic excavator multi-way valve│ Research on sand cleaning process of high-pressure multi-way valve castings for hydraulic excavators│ Experimental research on selection of explosion-proof valves for hydraulic excavators│ Research on the initial support force of the hydraulic support to ensure the hydraulic valve │ Simulation analysis of the impact characteristics of the hydraulic support high-flow safety valve │ Simulation of the dynamic characteristics of the hydraulic support high-flow safety valve │ Analysis of the fluid dynamics characteristics of the hydraulic support high-flow safety valve │ Design of the measurement and control system for the hydraulic support safety valve test bench │ Development of the microcomputer control test bench for the hydraulic support reversing valve │ Design of the hydraulic support hydraulic valve test bench │ Research on the differential high-pressure high-flow safety valve for the hydraulic support │ Design of CAT comprehensive test bench for valves for hydraulic supports │ Development of comprehensive test bench for valves for hydraulic supports │ Hydraulic system design for electro-hydraulic valve performance test bench for hydraulic supports │ Experimental research on automatic boosting valves for hydraulic support columns │ Common inspection problems and maintenance methods of hydraulic support valves │ Development of hydraulic non-weighted furnace top relief valves │ Research and discussion on the processing technology of precision-grade valve cores in hydraulic mechanisms │ Application of hydraulic proportional control system on safety valve test bench for hydraulic supports│ Characteristics and applications of built-in hydraulic control check valves in hydraulic cylinders│ Design and manufacturing of special fixtures for hydraulic pump metering valve cores│ Analysis of flow characteristics of hydraulic slide valves│ Research on clamping force of hydraulic slide valve cores│ Brief analysis of causes and countermeasures of hydraulic cunning valve clamping phenomenon│ Multi-physics coupled thermodynamic analysis of hydraulic solenoid valves│ Hydraulic solenoid valve failure mechanism analysis and transient characteristic simulation │ Discussion on the explosion phenomenon of the bottom valve of the low-pressure filter of the hydraulic breaker │ Rational use of hydraulic control check valves in the hydraulic system │ Design and application of new maintenance valves in the hydraulic system │ Hydraulic self-balancing valve test bench and pressure maintaining system │ Research on the relay valve of the hydraulic steering system │ Current status and prospects of hydraulic rotary valve technology │ Development of hydraulic valve action experimental simulation system │ Research on control and evaluation methods of cavitation noise at hydraulic valve ports│ Research on control and evaluation methods of cavitation noise at hydraulic valve ports (Project Grant No.: 50575200) │ Quality analysis and control of hydraulic valve block manufacturing process │ Prevention and removal of hydraulic valve block burrs │ Design, manufacturing and debugging of hydraulic valve blocks │ Hydraulic valve failure analysis and elimination measures │ Fuzzy neuron control and simulation of hydraulic valve controlled motor speed system │ Research on the manufacturing process of hydraulic valve plates │ Development of electromagnet CAT system for hydraulic valves │ Improvement of sealing structure design of hydraulic valves │ Hydraulic valve assembly process 5 │ Hydraulic valve maintenance experience │ Hydraulic valve test bench schematic diagram │ Hydraulic valve test bench control system development │ Hydraulic valve test bench computer control system │ Hydraulic integrated valve block design and manufacturing method research │ Hydraulic sequence valve valve body cracking analysis │ Improvement of hydraulically driven connecting rod butterfly valve in ironmaking applications │ Liquid hydrocarbon column safety valve system modification and measures │ Operation analysis and detection of hydraulic system of hydraulically controlled one-way butterfly valve│ Research on the control characteristics of hydraulically controlled one-way valve in locking circuit│ Development and application of hydraulically controlled downhole flow control valve│ Hydraulic-controlled check eccentric semi-ball valve│ Hydraulic-controlled check butterfly valve and its arrangement│ Optimized design of hydraulically controlled check butterfly valve│ Failure analysis and improvement of liquid hydrogen stop valve│ Calculation, selection and installation of safety valves for liquid ammonia storage tanks│ Analysis of causes of leakage of liquid ammonia filling ball valves and countermeasures│ Analysis of causes of valve breakage in liquid ammonia external pipelines│ Bellows cut-off valves for liquid chlorine│ Liquid level meter valves│ Reasonable configuration of air valves in the Linhuan Industrial Park Water Conveyance Project of the Huainan Water Diversion Project│ Design and research on the ROV transmission mechanism of deep water gate valves│ Design and simulation of the visual position indicator of the hydraulic actuator of the deepwater gate valve │ Design and training of the solenoid valve of the deepwater blowout preventer group │ Simulation research on the dynamic characteristics of the electro-hydraulic proportional valve in the deep sea environment │ Numerical simulation research on the flow field of the concrete pump distribution valve │ Experimental research on the reversing system of the S-tube valve of the concrete wet shotcrete machine │ Structural design and performance analysis of the mixed flow magnetorheological valve │ Application of chaotic particle swarm algorithm in the optimization design of electro-hydraulic servo valves │ Numerical simulation of multi-component air flow of decoking butterfly valve and optimal design of decoking flow path│ Numerical simulation of multi-component air flow and optimal design of decoking flow path of decoking butterfly valve│ Application of pigging valve in oil and natural gas transportation pipelines│ Solution to cavitation problem of slag water condition regulating valve│ Coating of slurry valve seat│ Effect of temperature on safety valve performance│ Application of temperature-controlled heating system in solving valve ice blockage│ Verification experiment and numerical simulation study of temperature control performance of thermostatic valve │ Design of thermosensitive wax-type adjustable pilot super-large displacement trap │ Influence of turbulence model on numerical simulation accuracy of valves │ Design improvement of exhaust valve of wet magnetic separator reducer │ Selection of valves for wet flue gas desulfurization device │ Research on dynamic optimization of dissimilation damping hole of relief pressure regulating valve │ Simple elimination method of unstable control pressure of relief valve │ Selection and fault diagnosis of relief valves│ Application of slide-type control valves in high adjustability ratios│ Application of slide-type control valves│ Experimental research on the adjustment characteristics of slide-type gray control valves│ Finite element analysis and optimization of slide valve circlip positioning force│ Static and dynamic analysis of slide valve-type ultra-high pressure hydraulic electromagnetic reversing valve│ Visual study of slide valve flow state switching│ Three-dimensional model simulation of the influence of the throttle edge fillet of the slide valve on the flow characteristics │ Research on the influence of rolling rotor compressor operating conditions on the movement pattern of the exhaust valve │ Improvement of filter pneumatic valve gate plate discharge valve │ Application of green sand in valve steel castings │ Detection of valve cracks in in-service steel castings of thermal power plants │ The influence of fire circles on the discharge volume of safety valves │ Selection and related design of fire safety shut-off ball valves │ Discussion on the design of fire emergency isolation valves │ Temperature diagnosis method and application of small leakage faults of thermal power unit drain shut-off valves │ Design of external full-lift spring safety valves for train tanks │ Analysis and countermeasures of damage causes of gray water system pipeline valves │ Solution to the deformation problem of gray cast iron knife gate valve castings │ Pneumatic control of three-way ball valves for furnace top ammonia water pipelines │ Refinery condensate water recovery technology │ Discussion on maintenance strategies of steam valves in oil refining production │ Selection of valve types for instrument measurement pipelines in oil refining units │ Structural design of pneumatic butterfly valves for steelmaking converters │ Design and application of flue butterfly valves │ Modification of double-layer ash discharge valves in sintered large flues │ Electrical control of sintered flue ash discharge valves │ Application of basic laws of thermodynamics in safety valve emission calculations │ Research on the influence of thermal expansion valve parameters on fixed-displacement automotive air conditioning systems │ Design of thermal expansion valve capacity testing system │ Fault diagnosis and on-site treatment of thermal expansion valves │ Thermoplastic valves_Torque_Testing methods │ Set pressure and displacement formulas of hot water boiler safety valves │ Valves used in thermal power plants and district heating │ Discussion on anti-corrosion issues of cold water pipelines and valves in steam areas of thermal power plants │ Design and functional expansion of thermal metering valve controllers │ Innovation of maintenance tools for phosphorus removal injection valves in hot rolling production lines │ Development and application of dual-stem gate valves at thermal recovery wellheads │ Structural improvement of thermostatic bimetallic trap │ Replacement of hot air stove cold air release valve under pressure │ Flow field analysis of hot air valve plate │ Discussion on longevity of hot air valve plate │ Finite element simulation of hot air valve air duct flow field │ Safety valve for welded insulated gas cylinders * * Standard research │ Development and application of coking tower bottom valve │ Coking tower bottom valve operation troubleshooting │ Replacement and modification of coke oven valve body │ Analysis of causes of coke oven valve body rupture and replacement methods │ Research on flow performance of black water valve seats for coal chemical industry │ Safety measures for the selection of oxygen control valves in coal chemical industry │ Selection of oxygen valves in coal chemical industry │ Maintenance of slag lock valves in coal chemical industry │ Technical transformation of fly ash storage tank lock bucket valve in coal chemical industry │ Discussion on the selection of automatic control valves for coal gasification working conditions │ Localization and application of oxygen shut-off valve for coal gasification equipment │ Combination butterfly valve for coal gas │ Research and design of closed harmonic power head of butterfly valve in gas pipeline │ Application and analysis of coal slurry discharge valve in water-coal slurry system of coal chemical industry │ Control of valve ring end surface deformation of gas turbine bypass mechanism │ Reliability analysis and countermeasures of ESD valves in natural gas pressure regulating stations of gas power plants│ Brief analysis of the application of gas polyethylene (PE) valves│ Three-dimensional numerical simulation of the flow field in gas pressure regulating valves│ Analysis and prevention of spool jamming of gas turbine fuel three-way valves│ Relief characteristics of bursting discs and safety valves in series combinations│ Brief discussion on the application of bursting discs and safety valves in series combinations│ Characteristics and applications of bursting needle type pressure relief valves│ The application and development history of blasting needle valves in flare systems │ Design of extra-large diameter high temperature double gate valves │ Application of feature modeling technology in valve CAD │ Calculation of relief valves for special working conditions │ Mechanism analysis and numerical simulation of piezoelectric pumps for special valves without moving parts │ Application of special valves in the refining industry │ Application of special valves in the oil and gas industry │ Cylinder valves for special gases │ Finite element analysis calculation and design of special valves │ Research on lubrication and leakage characteristics of independent lubricating injector needle valve parts │ Research on control characteristics of independent valve port control system when flow is saturated │ Analysis and solutions to the reasons for the surge vent valve of the compressor to be fully opened │ Analysis and improvement of the causes of pressure fluctuations of the annular pressure regulating valve │ Application of modern advanced technology in the localization of large pipeline ball valves │ Modern coal chemical industry’s requirements for wear-resistant valves │ The application form and technical status of modern ceramic materials in valves│ On-site production of safety valve debugging equipment│ Application of field bus in electric valve control│ Process improvement of on-site replacement of oil-immersed power transformer butterfly valves│ Glass fiber reinforced polypropylene diaphragm valve│ Application of fiberglass natural gas valve wells in urban gas pipelines│ Finite element analysis and landfill test research of glass fiber reinforced SMC valve wells│ Structure and application of ball discharge valve│ Development of spherical pressure relief valve│ Research on crack inspection of spherical tank safety valve connection│ Ball butterfly gas valve│ Design of ball valve auxiliary valve body flange drilling mold fixture│ Effect of ball valve guide vane linkage on draft pipe inlet pressure under successive load shedding conditions│ Design of ball valve seat by equilateral triangle section method│ Research on friction resistance coefficient of ball valve│ Sound field numerical simulation and experimental study of ball valve gas internal leakage │ Discussion on treatment methods for ball valve grease nozzle leakage │ Simplified model and numerical simulation analysis of ball valve flow coefficient │ Rolling processing of ball valve balls and special machine tools │ Improvement of ball valve ball grinding device │ Low temperature test of ball valves │ Analysis of causes of ball valve body fractures │ Experimental research on ball valve port flow characteristics │ Ball valve seat structure analysis │ Walter non-standard chamfering milling cutter improves ball valve processing efficiency │ Design of quantitative detection device for bottle valve air tightness leakage │ Use T68 boring machine to process large-span valve shaft hole of butterfly valve │ Pressure vacuum relief valve for low-pressure tank protection │ High-temperature resistant and high-strength jelly valve for underbalanced drilling and its application │ Fishable gas lift valve for gas lift oil production │ Ten-function electro-hydraulic reversing valve group for hydraulic supports │ Method of repairing boiler safety valves by grinding waste glass │ Using circulating gas composition to guide water and chlorine adjustment of reforming devices │ Design of fixtures for drilling double-angle oblique holes in the valve body using a radial drilling machine │ Practice of using cable bridge plugs and check valves to solve the secondary cementing of Xinguang 2 Well │ Depositing ceramic films of valve seats and valve stems using plasma chemical vapor deposition method │ Selection and application of valve-controlled sealed lead-acid batteries for power systems │ Development of electric anti-shear flow automatic control valve │ Research on working characteristics of electric discharge valve │ Design of electric proportional valve remote control system │ Electric hydraulic valve actuator │ Analysis of fracture of electric ball valve spline coupling │ Improvement of electric blind plate valve │ Electric vacuum butterfly valve │ Performance analysis and optimization design of electric drum vacuum valve │ Leakage causes and treatments of electric release valves │ Analysis of electric gate valve failure causes and countermeasures │ Research on the setting of closing torque parameters of electric valves │ Summary of maintenance experience of electric valve control systems │ Analysis and research of electric valve faults │ Use and maintenance of electric valves │ Discussion on power distribution and control of electric fire dampers │ Renovation design of the electronic control part of electric high-temperature gate valves │ Analysis and optimization design of thermal characteristics of electric high-temperature gate valve bodies │ Model and experimental study of electronic feedback 2D digital relief valve│ Research on the wear resistance of electron beam irradiated polytetrafluoroethylene and its application in valves│ Application of electronic expansion valve in computer room air conditioners│ Experimental study of electronic expansion valve on control of variable frequency compressor exhaust temperature│ Effect of electronic expansion valve on evaporator superheat stability│ Development of electronic expansion valve flow characteristics test bench│ Research on the surface quality of the injector needle valve of an electronically controlled high-pressure common rail diesel engine │ Modeling and simulation of the motor pump valve coordinated control actuation system │ Research on the application of electrical proportional valves in hydraulic fixtures │ Improvement and application of electric pump well check valves │ Research and analysis of electrorheological valves and valve control systems │ Application of electro-hydraulic servo technology on butterfly valves │ Research on valve-controlled hydraulic motor control systems of electro-hydraulic servo proportional comprehensive experimental benches │ Electro-hydraulic servo rotary valve withstands high pressure and bi-directional rotating proportional electromagnet│ Electro-hydraulic servo valve usage and maintenance instructions│ Development of integrated automatic testing system for electro-hydraulic servo valve dynamic and static characteristics│ Electro-hydraulic servo valve spray level flow field analysis and structural optimization│ Electro-hydraulic servo valve common fault analysis and treatment methods│ Electro-hydraulic servo valve contamination and wear accelerated degradation test design│ Electro-hydraulic servo valve test bench hydraulic system design│ Research on dynamic characteristics of piezoelectric stack driver for electro-hydraulic servo valve│ Modeling and dynamic simulation research of giant magnetostrictive converter for electro-hydraulic servo valve│ Research on hydraulic bridge design and anti-pollution characteristics of electro-hydraulic servo valve│ Research status and development trend of electro-hydraulic servo valve│ Research on no-load and dynamic load response performance of electro-hydraulic servo valve│ Selection and maintenance of electro-hydraulic servo valve│ Design of electro-hydraulic servo valve comprehensive test bench│ Design of electro-hydraulic regulating butterfly valve│ Factory test study of electro-hydraulic reversing valve│ Research on the application of electro-hydraulic reversing valve in underwater production control system│ Application of electro-hydraulic control slide valve│ Effect of electro-hydraulic proportional reversing valve on the response characteristics of automobile steering system│ Electro-hydraulic proportional control valve and its application in hydraulic press│ Research on the application of electro-hydraulic proportional control valves in engineering machinery │ Application of electro-hydraulic proportional directional throttle valves in large injection molding machines │ Research on self-optimizing dynamic compensation of the dead zone of electro-hydraulic proportional directional valves │ Design of hydraulic system for testing electro-hydraulic proportional directional valves │ Research on comprehensive test equipment for electro-hydraulic proportional directional valves │ Selection calculation and selection principles of electro-hydraulic proportional directional valves │ Application of electro-hydraulic proportional relief speed control valves in large hydraulic systems │ Research on the dynamic characteristics of the electro-hydraulic proportional relief valve│ Design and research of the electro-hydraulic proportional relief valve characteristic test bench│ Experimental research on the dynamic characteristics of the electro-hydraulic proportional throttle valve│ Research on the application of the electro-hydraulic proportional throttle valve on the die-casting machine│ Analysis of the steady-state hydraulic power of the electro-hydraulic proportional speed regulating valve throttle core│ Analysis of chatter signals in PWM control of the electro-hydraulic proportional valve│ The application of electro-hydraulic proportional valves in the deviation correction control system of long-line aluminum production lines │ Design and research of electro-hydraulic proportional valve control circuits │ Research on electro-hydraulic proportional valve-controlled semi-active shock absorbers │ Modeling and simulation of electro-hydraulic proportional valve-controlled hydraulic cylinder systems │ Research on the superposition method of independent flutter of electro-hydraulic proportional valves │ Research and design of controllers for electro-hydraulic proportional valves_Yu Zhongbin│ Performance analysis of electro-hydraulic proportional valve and experimental research on its application in hoist braking system│ Design and experimental research of electro-hydraulic proportional valve_Wang Guosheng│ Application of electro-hydraulic valve in quantitative loading system│ Analysis and treatment of electromagnetic pilot valve core failure│ Special aircraft hydraulic system failure and diagnosis caused by electromagnetic reversing valve│ Static characteristics and simulation of electromagnetic proportional multi-way reversing valve in the fine-tuning range│ Structural design and performance testing of electromagnetic proportional pressure relief valve│ Modeling and characteristic simulation of new throttle groove of electromagnetic proportional throttle valve│ Design of electromagnetic speed regulating valve controlling hydraulic cylinder driving cutting device│ CFD analysis of internal flow field of solenoid valve│ Application of solenoid valve redundancy in control valves│ Application of solenoid valve redundancy configuration in control valves│ Design of solenoid valve action life test system│ Design and application of solenoid valves in the safety interlock protection process of petrochemical equipment│ Selection and application of solenoid valves in fan anti-surge control systems│ Development of solenoid valve controlled semi-active suspension adjustable shock absorber │ Development and experimental research of solenoid valve test device │ Working principle of solenoid valve and its application in chemical equipment │ Safety and reliability analysis of solenoid valve combination configuration │ Selection and application of check valves in power stations │ SA217 for power stations_Repair welding process of C12A cast steel valve body │ Design of welded cast steel gate valves for power stations │ Magnetic driven small diameter socket welding ball valves for power stations │ Design of high pressure differential valves for power stations │ Analysis and selection of operating modes of power station regulating valves │ Optimization and treatment of stress at the blocked valve of the main steam pipe of power station boilers │ Failure analysis of connection welds of safety valves of power station boilers │ Friction reduction analysis of power station boiler water supply regulating valve │ Analysis of causes of bolt breakage of power station boiler valves and countermeasures │ Research on surfacing materials for power station valve sealing surfaces │ Research on high-temperature corrosion-resistant materials for surfacing of power station valve sealing surfaces │ Nominal pressure of power station valves │ Anti-corrosion and wear-resistant treatment of power station valves │ Fault detection technology of water traps 2 │ Correct selection, installation and use of water traps 4 │ Research on the structure of trap stop valve │ Trap pipeline design and energy saving 5 │ Structural form and working principle of traps Anonymous paper │ Overview of trap selection and installation 1 │ Research and application of welding technology of valve casing and pipe fittings for million-kilowatt ultra-supercritical steam turbines │ Design of main steam regulating combined valve housing of million nuclear power steam turbines │ Analysis of aerodynamic torque of reheat butterfly valve plate of million nuclear power steam turbines │ Supervision and inspection procedures (nuclear power plant operation phase): Turbine bypass valve (routine inspection) │ Application of disc valve in Shell coal gasification │ Application of disc valve in coal gasification device │ Current failure analysis and solution of regulating butterfly valve │ Improvement of blind valve structure │ Research on valve port pressure characteristics of direct-acting hydraulic relief valve │ Research on frequency response characteristics of direct-acting electro-hydraulic proportional pressure reducing valve │ Theoretical analysis of static characteristics of direct-acting conical relief valve │ Technical requirements for the selection of directly buried fully welded electro-hydraulic linkage ball valves │ Development of DC liquid hydrogen stop valve │ Application of DC back pressure valve in liquefied petroleum gas metering system │ Application of DC controlled electromagnetic three-way rotary valve in single well metering │ Research on the characteristics of linear motor oil pump valves under different working conditions │ Analysis of working performance of linear motor oil pump valve assembly │ Application of direct reading anti-freeze blocking constant pressure sleeve gas valves │ Straight-through check valve│ Analysis of the characteristics of direct-driven impact hydraulic valves and their hydraulic systems│ Dynamic simulation research on the internal flow path of direct-driven cartridge valves│ Vacuum valve product quality classification jbt53023 │ Analysis of axial fracture of short series butterfly valve bodies│ Quality control and management before installation of petrochemical engineering valves│ Discussion on setting methods of safety valves in petrochemical process equipment│ Research on the connection form of valve body and valve cover of high-pressure valves for petrochemical applications │ Selection and installation of gate valves in petrochemical pipelines │ Analysis and countermeasures for leakage of petrochemical pipeline station valves │ Analysis and countermeasures for valve leakage in petrochemical industry │ Risk analysis and countermeasures for long-term operation of safety valves in petrochemical installations │ Micro-leakage type test of petrochemical valves_Muke is here_Huang Haijun│ Analysis and application of valve positioner diagnostic function in petrochemical field│ Three-dimensional parametric design of oil wellhead gate valve body│ Research on the selection and application of safety valves in petrochemical enterprises│ Safety application and research on control valves in large tank areas in petrochemical industry│ Analysis and control of leakage of valves used in petrochemical industry│ Selection of control valves under harsh working conditions in petrochemical industry│ Installation of traps and heat tracing valve groups in petrochemical plants │ Valve sealing in petrochemical plants │ Valves for petrochemical plants │ Selection and piping design of steam traps in petrochemical plants │ Valve sealing principles and leakage treatment in petrochemical plants │ Research on stability issues of safety valves in petrochemical equipment │ Design and calculation of concealed stem gate valves for oil and natural gas drilling wellheads │ Discussion on the technical conditions of valves under hydrogen sulfide-containing working conditions in the oil and gas industry.docx │ Construction of emergency shut-off valve interlocking control scheme for oil depots │ Technical status and development trends of control valves in the petroleum and petrochemical industry │ Analysis of the application of laser composite strengthening technology for key valves in oil pipelines │ Failure analysis of valve stem fracture for oil drilling equipment │ Preventive measures for lax electric valve closing in the fire protection system of Shixi centralized processing station │ Influence and optimization of the valve core of the discharge valve of the mining emulsion pump│ Abrasive belt grinding and its application in valve production│ Application of grinding technology in safety valve maintenance│ Application of hardening technology in industrial valves│ Structural design of carbon steel valve castings│ Analysis and calculation of magnetic drive gate valve torque│ Application analysis of hydraulically controlled check valves in magnetic field presses│ Influence of magnetic fluid on the dynamic characteristics of servo valve torque motor│ Design of magnetorheological pilot-operated relief valve│ Research on magnetorheological digital valves│ Application of magnetic valve type controllable reactor in electrified railways│ Measurement of magnetic valve type controllable reactor loss│ Test method of load characteristics of magnetic valve type controllable reactor│ Research on grinding technology of abrasive slurry flow needle valve body│ Application of phosphating in valve manufacturing industry│ Phosphoric acid_Selection of pipelines and valves for ammonium phosphate industrial installations 4 │ Selection of pipelines and valves for phosphoric acid and ammonium phosphate industrial installations │ Research on the leakage problem of gate valves in ammonium phosphate solution │ Application of ion nitriding in high-pressure valves │ Application of load cells and electromagnetic proportional valves in double-sided grinders │ Production test of rare earth cast steel valves │ Application and improvement of programmable valves in PSA process │ Application and maintenance of programmable valves in pressure swing adsorption devices │ High-pressure gate valves for steam injection in heavy oil thermal recovery │ Effect of the chamfer size of the stabilizer spray valve valve core on the flow │ Technical modification and maintenance of pneumatic valves and inlet guide vanes of air separation equipment │ Analysis and treatment of fluctuations in air compressor vent valves │ Research on the processing technology of air compressor valve covers │ Development of safety valves for air compressors │ Analysis and treatment of leakage causes of check valve packing in air system │ Design of air screw drilling tool speed limiting valve and numerical simulation of flow field │ Comparative study of air valve performance test equipment │ Development of air valve flow resistance and flow coefficient testing system │ Research on forming cracks in flange valve port of air conditioning compressor │ Development of special machine for processing the end hole and inner plane of air conditioning four-way valve │ Research on erosion and wear calculation of caged throttle valve │ Research on the changing rules of cage throttle valve opening and flow area │ Selection of cage throttle valve and calculation of CV value │ Cage single seat valve │ Hydraulic cycle test and CFD analysis of equal wall thickness screw drill bypass valve │ Application of plasma surfacing copper-based alloy powder on valves │ Application of plasma powder spray welding technology on valve sealing surface │ Fuzzy control of feeding valve in silo quantitative loading system │ Tightening torque control of cylindrical shock absorber recovery valve system │ Simple and reliable new valve repair method │ Simple safety valve spring stiffness inspection device │ Brief description of the opening pressure and opening time of the pressure relief valve │ Brief description of the selection and design of the regulating valve under severe working conditions │ Research and application of tube force control valve │ Calculation of the maximum discharge capacity of the safety valve of shell and tube heat exchangers │ Design analysis of safety valves for shell and tube heat exchangers │ Technical status and development direction of pipeline ball valves │ Analysis of self-draining valve seats and double-piston effect valve seats of pipeline ball valves │ Impact of pipeline effects on the response speed of excavator multi-way valves │ Low-temperature leakage test of pipeline connectors/valves │ Pipeline ball valve failures and countermeasures - Lin Yuanmao 4 │ Pipeline ball valve failures and countermeasures │ The ultimate control of the pipeline is the valve │ Analysis of the causes of stainless steel bolt breakage of pipeline valves │ Causes and prevention of pipeline valve leakage Dai Weimin 2 │ Selection and installation of pipeline valves │ Automatic control of electric arc valves of grate coolers │ Analysis of flow resistance of quasi-fractal Y-shaped bifurcated flow tube valveless piezoelectric pumps │ Design of pinch valves for powder pipelines │ Development of powder metallurgy two-speed hydraulic valve discs │ Application of pulverized coal three-way valve in Shell pulverized coal gasification and localization improvement │ Valve selection for viscous media │ Simulation analysis of vibration phenomenon of precision pressure reducing valve │ Development of precision pressure reducing valve │ Manufacturing and processing of precision hydraulic valve slide valve pair │ Emergency shut-off valve │ Application of emergency shut-off valve in Chengdao oil production platform │ Processing of emergency shut-off valve cylinder │ Emergency pneumatic cut-off valve failure judgment and treatment methods │ Discussion on the design of emergency cut-off valve (EBV) in modern large-scale refining and chemical plants │ Research on noise control of pure water hydraulic relief valve │ Numerical simulation research on cavitation flow field of pure water hydraulic poppet valve │ Simulation analysis and experimental research of pure water tubular relief valve │ Summary of valve usage in soda ash enterprises │ Application of combined guide float valve tray in the five decarbonization towers │ Numerical simulation of multiphase flow in combined guide float valve trays│ Research on the plate efficiency of combined guide float valve trays│ Research on the torque control mechanism of combined disc spring nuclear-grade valve electric devices│ Design and test of combined valve bypass flow type ECHPS controller│ Application of combined high-efficiency guide float valves in jet fuel towers│ Working principle and flow characteristics of "Y"-shaped flow tube valveless piezoelectric pumps for cell or polymer transport│ Simulation and analysis of the influence of structural parameters on the unloading valve of a pumping station │ Knowledge of valve selection in water supply and drainage projects │ Analysis and calculation of the transformation of the water supply pump turbine quick-closing valve │ Construction of water supply pipeline valves and valve wells │ Research on the characteristics of high-speed solenoid valves for injectors of in-cylinder direct injection gasoline engines │ Calculation of the installation position of tank farm drainage valves │ Design of tank container combined discharge valves │ Description of American standard valve codes │ American standard valve training materials │ Analysis of two-phase flow field in the valve core flow channel of the flap float valve │ Installation position and working effect of the flap valve 2 │ Electro-hydraulic shaking table modeling considering the dynamic nonlinear characteristics of the servo valve │ Research on the reliability model of the membrane interlock valve considering the influence of component interaction │ Improvement of air flow pulsation simulation considering the influence of the valve cavity │ Improvement of the structure of wear-resistant and corrosion-resistant ball valves │ Structure and corrosion behavior of new stainless steel for corrosion-resistant valves │ Monel alloy for corrosion-resistant valves │ Exploration on the design of "door" type quick-check hydraulic safety valves for large tanks in joint stations │ Discussion on troubleshooting of interlocking valve response failures │ Linkage design of safety valves in polypropylene units │ Analysis of the causes of blockage of the discharge valve of the flash tank of polypropylene units │ Repair and modification of polypropylene rotary valves │ Selection of regulating valves in polyethylene units │ Polyperfluoroethylene-propylene plastic properties and valve lining technology │ Flow pattern identification and numerical simulation of polymers in low shear flow control valves │ Design and research of electromagnetic stop valves for polyurethane pouring machines │ Long-term operation management of PDS valves in polyolefin plants │ Analysis and solutions to thermal locking of plug valves │ Design of expansion and contraction lightweight gate valves │ Effect of back pressure on the operating performance of conventional spring safety valves │ Electrical design of valve halls in back-to-back converter stations │ Problem analysis and measures for the water cut valve of the crude oil electric desalting tank of Shengli Refinery │ Improvement and application of the gravity thrust check valve at the wellhead of the water injection well in Shengtuo Oilfield │ Aluminum alloy right-angle stop valve with internal thread in the hose (CB565-77) │ Aluminum alloy stop valve at the hose joint (CB566-77) │ Optimized design of the pulser solenoid valve │ Several opinions on the debugging of the pulse safety valve system │ Potential safety hazards of pulse safety valves in operation │ Simulation and experimental research on diaphragm pilot water pressure relief valves │ Development of diaphragm pilot water pressure relief valves │ Application of diaphragm quick opening sludge valves in water purification plants │ Improvement of diaphragm quick shut-off valves │ Research on transient numerical simulation method of diaphragm pressure stabilized relief valves │ Design calculation of diaphragm pressure stabilized relief valves │ Research on the influence of expansion valve characteristics on the accuracy of compressor performance testing │ Selection of self-operated pressure regulating valves and their application on offshore oil platforms │ Application of self-operated pressure difference control valves in air conditioning systems │ Model and calculation of valve closing time of self-operated liquid level control valves │ Numerical simulation and optimization of flow field of self-operated temperature control valves │ Analysis of the relationship between performance and failure of automatic pressure-maintaining weight-type hydraulically controlled butterfly valves │ Failure analysis of automatic pressure-maintaining weight-type hydraulically controlled butterfly valves │ Design and simulation research of automatic transmission shift solenoid valve │ Research on dynamic response characteristics of automatic transmission electro-hydraulic proportional shift valve │ Safety protection application of automatic backflow control valve on high-speed pump │ Automatic clamping safety valve verification device │ Automatic exhaust valve │ Requirements for valves in automatic control systems │ Research on laser strengthening of automatic flow balance valve overflow end cap │ Application of automatic temperature control valve on acrylic baler │ Automatically adjusting step pressure reducing valve │ Misunderstandings in the application of automatic valves │ Valve wait-blind areas in the operation of automatic valves │ Design of self-balancing two-way return valves │ Development and application of self-balancing one-flow valves │ Adaptability analysis of the venting and ignition system of the station valve chamber in the Zigong gas transmission operation area │ Design of superimposed valve hydraulic system for stage performance vehicles │ Design research of aviation pneumatic pressure regulating butterfly valves │ Optimal design and numerical research of marine purge valves │ Design of marine multi-hydraulic butterfly valve opening and closing hydraulic control system │ Development of cast steel valve casing of marine diesel engine exhaust valves │ Analysis of laser cladding of Stellite alloy on the cone surface of marine diesel engine exhaust valves │ Research on improvement of marine seawater safety valves │ Discussion of simulation measurement methods of flow resistance coefficient of marine fire valves │ Research and analysis of hydraulic actuators of marine butterfly valves │ Marine boiler main safety valve failure and treatment │ Standard usage guide for marine valves │ Design of double redundancy reversing valve control system for marine hydraulic steering gear │ Emerson adds mobile diagnostic function to control valves in the Foundation fieldbus network │ Emerson launches new butterfly valve │ Research on flow control characteristics of throttle slot valve port │ Structural improvement of slurry gate valve for throttling │ Research on the condensation law of natural gas components in the throttle valve │ Several issues in the application of throttle valves in Tarim Oilfield │ Design of throttle valve cuttings filtering device │ Experimental study on the impact of throttle valve opening on heat transfer performance of self-cascading refrigeration cycle condensation evaporator │ Selection of throttle valve bellows length │ Improvement of throttle valve disc │ Throttle valve core vibration failure analysis and structural improvement │ Application of energy-saving micro-resistance slow-closing check valve in urban pipeline network │ Arrangement and piping of the adsorption tower and rotary valve of the aromatic hydrocarbon device │ Faults and judgment methods of natural gas compressor valves in Sulige Gas Field │ Valve body design of balanced rotary check valves outside the British standard │ The relationship between the opening of the throttle valve and the number of distribution turns of Laiwu Iron and Steel No. 2 blast furnace │ Several issues in steam condensate recovery technology │ Discussion of steam condensate recovery plan │ Steam condensate recovery energy-saving technology │ Recycling and utilization of steam condensate 2 │ Optimization and transformation of steam and condensate recovery system 4 │ Analysis and countermeasures for steam safety valve cold calibration setting pressure deviation │ Hydraulic calculation of steam safety valve exhaust pipe and exhaust steam reaction force calculation │ Design and noise analysis of steam control valve_Liu Ruya_Wang Hui_Wang Jianhua_Liu Xiaoguang 5 │ Selection and design of steam vent valve │ Design improvement of spring safety valve for steam │ Ball valve for steam │ Application of steam trap in production │ Steam trap and correct selection method 4 │ Steam trap and correct selection method │ Detection of internal leakage of steam trap │ Application of steam trap in petrochemical enterprise production │ Research on hysteresis of steam trap bellows │ Selection and application of steam traps │ Principles of steam trap selection │ Technical transformation of steam pipe network vent valves │ Selection of steam pipeline traps and analysis of common faults │ Analysis of leakage causes of steam system safety valves and improvement measures │ Discussion of steam valve maintenance strategies │ Processing research on main steam valves and medium-pressure reheat valves of steam-burning combined cycle units │ Thin-walled support ring valve seat processing method │ Application of virtual reality technology in valve design │ Analysis of problems existing in the butterfly valve switching process │ Research on waterproof hammer characteristics of butterfly check valve and design of related components │ Structural analysis and optimized design of butterfly buffer check valve │ Movable butterfly plate soft sealing butterfly valve │ Research on butterfly valve processing and assembly technology │ Butterfly valve two-position display transmission device │ Calculation of butterfly valve sealing size │ Structural analysis of butterfly valve sealing wedge angle │ Theoretical analysis of technological evolution of butterfly valve sealing structure │ Butterfly valve performance test bench │ New progress in butterfly valve technology │ Improvement of electrical control circuit in butterfly valve modification work │ Numerical simulation and analysis of butterfly valve flow field │ Structural improvement of butterfly valve hydraulic drive device │ Filled sealing ring for butterfly valve │ Ni of butterfly valve_P brush plating technology and pretreatment process │ Butterfly valve use, maintenance and inspection │ Butterfly valve hydrodynamic torch calculation 4 │ Butterfly valve hydrodynamic torch calculation │ Butterfly valve evolution process and triple eccentric butterfly valve design and calculation │ Butterfly valve selection and installation │ Improvement of the connection structure of butterfly valve disc and sealing ring pressure plate │ Butterfly valve design and selection │ Factors to be considered in butterfly valve design │ Repair, improvement and processing of butterfly valve metal sealing surface │ Butterfly valve body riser-free casting process │ Processing of butterfly valve body stem hole │ Mounting structure of butterfly valve stem rolling bearing │ Processing of butterfly valve disc shaft hole │ Calculation of inner diameter reduction of butterfly valve shaft copper sleeve │ Standardized design of butterfly valve parts │ Theoretical and experimental research on spiral valve piezoelectric pump │ Analysis and improvement of reasons why screw pump safety valve does not trip │ Screw air compressor air inlet valve flow-pressure difference test study │ Impact of compensating tension and lifting butterfly valves on reinforced factory buildings │ Oil-charged hydraulic motor valve pump parallel time-variable structure control speed regulation system │ Bushing plug valve failure analysis and treatment strategies │ Fluorine-lined pump valve process technology and its application fields │ Processing and testing of rubber-lined butterfly valves │ Improvement of rubber-lined butterfly valve structure │ Analysis of the causes of poor opening and closing of large valves in cracking furnaces │ Influence of furnace loading methods on the sintering deformation of iron-based valve plates for refrigeration compressors │ Analysis and prevention of spring fracture failure causes of loader distribution valves │ Research on D32 hydraulic multi-way reversing valves for loaders │ Calculation and analysis of the pressure drop rate of the cut-off valve of the Second West-East Gas Pipeline Line │ Interpretation of maintenance diagnosis of valve actuators │ Application of counters in valve electric devices │ Research and application of automatic control of multi-way valves in metering stations │ Leak detection and emission estimation of equipment and pipe valves │ Methods to evaluate cavitation and cavitation damage of control valves │ Discussion on the design of plug valves │ Impact of test media on safety valve performance │ Impact of insufficient test system capabilities on safety valve performance │ Balance valve core design of pressure regulators │ Research on the protection structure of multi-stage series-connected zinc oxide valve plates with voltage regulating windings│ Implementation rules for type testing of special equipment manufacturing licenses for regulating valves, control valves and general valves (safety registration of manufacturing units)│ Calculation of regulating valve caliber│ Control methods of regulating valve noise│ Application of regulating valves in dual-fluid atomizing nozzle control│ Analysis of the application of regulating valves in Zhongxian natural gas purification plant│ Application of regulating valves in emergency pressure relief of petrochemical plants │ Research on the problem of regulating valve clogging │ Discussion on the overhaul process and quality control of regulating valves │ Determination of the calculation method of regulating valve opening │ Improvement of the casting process of the cylinder body of the regulating valve actuator │ Analysis of the causes of regulating valve vibration and preventive measures │ Vibration of the regulating valve and its solutions │ Design of the regulating valve control system │ Selection of regulating valve materials │ Two-dimensional unsteady numerical simulation research on the flow field of the regulating valve │ Analysis of the flow characteristics of the regulating valve and application selection │ Exploration of the flow characteristics of the regulating valve │ Comparison of several calculation methods of the flow coefficient of the regulating valve │ Application and development trend of the regulating valve │ Mathematical model and stability analysis of the regulating valve │ Selection of the regulating valve │ Analysis of the structure and performance of the regulating valve │ Issues that should be paid attention to in the selection of the regulating valve │ Control valve flashing and cavitation phenomena and protective measures │ Control valve port design and simulation analysis │ Control valve disc profile design research │ Control valve disc CNC machining analysis and programming │ Control valve spool variable opening vibration analysis │ Control valve spool shape computer-aided design method study │ Control valve resistance characteristics analysis │ Control valve oscillation causes analysis and treatment │ Control valve rated flow coefficient adjustability design │ Analysis of flow stability of speed regulating valves│ Analysis and selection of two common structures of speed regulating valves│ Talking about the reasons that affect the sealing of spring-type safety valves│ Research on the influence of servo valve parameters of negative flow control mechanism on the dynamic characteristics of variable pumps│ Improvement measures for load feedback proportional multi-way valve cores│ Research on dynamic characteristics simulation and parameter optimization of load-sensitive balancing valves│ Analysis and research on the stuck phenomenon of load-sensitive valve cores│ Analysis of causes of malfunction of water hammer pressure relief valve in Guiyang oil transfer station and preventive measures │ Process optimization of lifting and tilt valve castings │ Development of crane hydraulic multi-way reversing valve test bench │ Development of crane hydraulic balance valve detection system │ Super (super) critical electric high plus three-way valve body strength stress analysis │ Supercritical C12A valve body casting process research │ Calculation of safety valve relief volume under fire conditions under supercritical pressure │ Supercritical stop valve body strength stress analysis │ Research on supercritical minimum flow regulating valve │ Supercritical turbine reheat main steam valve jamming analysis │ Supercritical steam turbine unit feed water pump recirculation system valve application and improvement │ Research on supercritical high and low pressure bypass valves │ Ultra-low temperature stop valve structural design │ Ultra-low temperature pressure regulating valve diaphragm design │ Austenitic stainless steel for ultra-low temperature valves │ Application of overpressure relief valve scheme in Dahuofang Reservoir water conveyance project │ Discussion on the application of ultrasonic leak detection technology in valve air seal test │ Development of a complete set of butterfly valves for ultra-large intelligent flow control equipment │ Ultra-fast opening stop valve │ Harm of ultrafiltration valve internal leakage to membrane equipment and control measures │ Improvement of ultra-short ball valve end cover structure │ Structural and modeling research on super magnetostrictive two-stage electro-hydraulic servo valve│ Modeling and dynamic simulation research on super magnetostrictive direct-acting high-frequency electro-hydraulic servo valve│ Pressure reducing valve for ultrapure water hollow fiber ultrafiltration device│ Numerical analysis of the thermal stress of starting valve of ultra-supercritical 600MW steam turbine unit│ Research on ultra-supercritical reheater safety valve│ Transient dynamics analysis of the closing of the self-operated hydraulic high water supply three-way valve of ultra-supercritical units│ Analysis of transient interference contact between the valve housing and valve seat of the main steam regulating combined valve of ultra-supercritical steam turbines│ Analysis of cavitation erosion characteristics of the regulating valve 361 of ultra-supercritical thermal power units│ Research on the localization of ultra-supercritical thermal power unit valves│ Research on cavitation erosion characteristics of ultra-supercritical power station boiler regulating valves and piping systems│ Research on speed stability of independent port directional valve control system under overload load │ Application of supersonic spraying technology in hard-sealed ball valves │ Application of supersonic flame spraying technology in high-pressure differential control valves │ Failure analysis and improvement of ultra-high pressure double plunger pump check valve components │ Ultra-high pressure safety valves │ Dynamic characteristics of ultra-high pressure safety valves │ Ultra-high pressure small diameter forged steel stop valves │ Analysis of the axial sealing force of the stem of the ultra-high pressure stop valve│ Research on the ultra-high pressure pneumatic pressure reducing valve│ Numerical analysis of the electric field of the valve side lead of the ultra-high voltage DC converter transformer│ Improvement of the packing seal structure of the ultra-high pressure pulse regulating valve│ Analysis of the dynamic strength check of the ultra-high pressure pulse valve body│ Analysis of the thread connection strength of the ultra-high pressure pulse valve│ Research on the sealing structure technology of the ultra-high pressure gas production wellhead flat gate valve│ Theoretical modeling of ultra-high pressure metal rubber precision flow valve │ Analysis and test of heat transfer in ultra-high temperature valve seat cooling channel │ Development of ultra-high temperature and high pressure hydraulic angle stop valve for ultra-high speed wind tunnel │ Research on large thrust output device of electric actuator for ultra-(super)critical valves │ Design of fixture for turning valve body holes │ Adjustable fixture for turning wedge gate valve body sealing surface │ Research on general methods of fault diagnosis of automotive solenoid valves Research on the pressure field and velocity field of vehicle-mounted high-pressure pneumatic pressure reducing valve│ Characteristics analysis of the pressure regulating valve of the vehicle's 4-speed power shift transmission│ Simulation of the dynamic characteristics of the digital proportional relief valve for vehicle gear shifting│ Selection of servo valves for the AGC system under the hydraulic pressure of the rolling mill│ Orbital plug valve│ Application and failure analysis of orbital ball valves in ammonia synthesis plants│ Application of technical transformation of orbital ball valve actuators│ Calculation and analysis of the dynamic characteristics of the ball valve at the outlet of the rotor pump │ Development of cup valves for converter dry dust removal │ Discussion on the valve settings on the air inlet pipe of the primary dust removal fan for converter wet dust removal │ Research on the necessity and effect of the transformation of the three-way valve of the converter gas fan │ Simulation study of the hydraulic system of the rotary valve control hydraulic three-cylinder reciprocating pump │ Development and application of soft seal gate valves │ Research and application of soft plunger retrievable fixed valve oil pump │ Fire resistance test of valves with soft valve seat turning 1-4 times API607 4th edition 1993 │ Application of axial flow check valve │ Analysis and design of axial flow check valve disc structure │ Design and implementation of air source pressure maintaining device of axial flow fan anti-surge valve │ Transformation of manual valve chamber data remote transmission system of gas transmission pipeline │ Research on the setting value of pressure drop rate of cut-off valves in gas pipelines │ Design and implementation of oil pipeline control valves │ Winter care and maintenance of regulating flat gate valves in oil pipelines │ Ball valves for transporting natural gas and flat gate valves for oil pipelines │ Analysis of the structure and material selection of flat gate valves for transporting oil and natural gas │ Design of ball valves for transporting slurry │ Analysis of medium lift characteristics and spring stiffness of overflow valves │ Countermeasures for non-stop treatment of damaged filter pressure reducing valves │ Research and design of filter distribution valves │ Using QC methods to reduce the clogging frequency of the discharge valve of wet sulfur molding machines │ Applying design methodology ideas to design valve solutions │ Troubleshooting methods for valves in hydrogen-cooled generators during operation │ Setting up the boundary valve platform for in and out devices │ Localization of imported compressor gas valves and their applications │ Research on localization of imported nuclear power reheat valve actuators │ Design of intake and exhaust valve displacement testing device │ Three-dimensional solid design of water inlet valve │ Remotely operated line cut-off valve │ Structural analysis of connecting rod butterfly valve │ Research on continuous fiber reinforced fiberglass ball valve │ Discussion on the selection of outlet valves in water delivery pump room │ Design principle of multi-nozzle sleeve type flow regulating valve adapted to water hammer control │ Research on structural optimization scheme of pneumatic butterfly valve in turbine waste heat flue │ Application of turbine bypass valve │ Universal valve body opening clamp │ Universal valve materials │ Determination of leakage level of ventilation system air duct valve and its testing method │ Analysis of failure causes and solutions of quick-closing regulating valve │ Characteristics and adjustment methods of quick-acting hydraulic relays and pressure relief valves │ Application of speed valve control system in vertical semi-continuous casting │ Common fault causes and solutions for valve inspection in the gas production section │ Causes, hazards and treatments of common faults in valve inspection of gas production systems │ Characteristics of valves in the papermaking industry │ Research on the efficiency of corrugated guide float valve trays under partial reflux │ Design and calculation of valves for sour oil and gas │ Design and calculation of sour oil and gas valves │ Application of balance valves in heating water systems │ Research and application of oil replacement under pressure in gas production wells and energy-saving technologies for casing valves │ Design and use of concealed rod display mechanism of gas production valves│ Using external leakage type to improve the constant pressure accuracy of pilot relief valves│ Experimental research on power consumption characteristics of cold water pumps using constant pressure difference control of bypass valves│ Three-dimensional finite element analysis of hydraulic servo valve torque motors using magnetic fluid│ Research on the dynamic characteristics of mobile fire water monitors using valve-controlled cylinders for automatic reversal control│ Selection of wear-resistant materials for flat gate valves in heavy media system pipelines│ Water-saving renovation of gravity valveless filter │ Design of two-valve joint control EGR system under all working conditions of heavy-duty diesel engine │ Online detection of trace moisture in reforming unit │ Design of high-pressure ball valve of heavy oil hydrogenation unit │ Design and optimization of valve body structure of heavy hammer hydraulic control butterfly valve │ Design of tailor-made control valve flow characteristics │ Anti-corrosion measures for metal valves │ The role of metallographic analysis in the quality control of valve steel castings │ Application of cauldron bottom valve in FMTP project │ Improvement of needle throttle valve stem connection structure │ Research on the problem of non-durability of needle valve body │ Cold extrusion processing design of needle valve body hole │ Establishment of flow rate growth regression equation during needle valve body grinding process │ Application of titanium alloy in marine valves │ Application of titanium alloy valve and its material selection │ Tensile test analysis of steel gate valve stem and gate plate │ Commonly used main materials for steel valves │ Application of steel-backed composite bushings on butterfly valves │ New technology for water supply valves in water pumping stations of steel companies - multi-functional hydraulic control valves │ Design research on drilling pump valves │ Drilling fluid DPSK signal demodulation and rotary valve control pulse reconstruction │ Drilling fluid continuous wave generator rotary valve design and signal characteristics analysis │ Design of electro-hydraulic proportional directional valve hydraulic system for drill pipe straighteners │ Analysis of the structure and failure reasons of the blowout check valve in the drill string │ Deformation rules during the preparation process of iron-based powder metallurgy valve plates │ Analysis of the leakage causes of railway tank car safety valves │ Installation methods of 120 valves and car bodies for railway trucks │ Three-dimensional flow field simulation of shock absorber pressure regulating valves in railway vehicles │ Structural design and static characteristics calculation of relief valves in aluminum alloy hydraulic valve islands │ Research on the application of hinge technology in automobile steering gear valve sleeves │ Dynamic simulation of hydraulic characteristics during the opening process of Yinpan ship lock valve│ Analysis of cracks in cast stainless steel valve body│ Cast integral multi-way valve│ Repair of defects in cast aluminum bronze valves. │ Analysis of design examples of special machine for boring the seat hole of cast valves │ Flat cast steel small diameter valve cover for vertical pouring │ Optimized design of cast steel wedge gate valve │ Improvement of cast steel valve body riser │ Discussion on powder coating process of cast iron valves │ Analysis of corrosion resistance of cast iron valves │ Analysis and modification of failure causes of lock bucket pressure relief valve │ Gas path improvement plan for slag lock valve action timeout │ Application of slag-locking valve in coal-water slurry pressurized gasification device│ Design and application of slag-locking valve│ Design and improvement of slag-locking valve stem│ Simulation study of dynamic characteristics of boiler safety valve│ Failure and prevention of boiler safety valve spring│ Common fault analysis and solutions of boiler safety valve│ Modification of lever clamp of boiler feed water pump speed control valve│ Boiler steam tightness test and safety valve constant pressure process│ Application of zinc-based alloys in valve transmission parts │ Design and research of anchor drilling rig rig control valve group test bench │ Application of conical valves and energy dissipation chambers in flood discharge and energy dissipation in the discharge holes of Bagong Hydropower Station │ Characteristics research and flow field numerical simulation of conical valve port slide valves │ Research on the "howling" phenomenon of poppet valve type one-way valves │ Research on steady-state hydraulic power compensation of poppet valve cores │ Research on the application of bonding diagrams in the modeling of electro-hydraulic proportional multi-way valves │ Research on the application of bonding diagrams in modeling and dynamic simulation of high-speed on-off valves │ Analysis and research on the processing technology of forged stainless steel valve bodies │ Forged steel regulating valves │ Accident analysis and modification of the butterfly valve hydraulic system of Unit 3 of Changtan Reservoir Hydropower Plant │ Calculation of water hammer pressure for closing valves in long-distance slurry pipelines │ Selection of end valves for pressurized gravity water transmission projects in long-distance pipelines │ Discussion on the performance of exhaust valves in long-distance water transmission projects │ Precision control of flow regulators in long-distance water transmission projects │ Analysis of the hydraulic transition process of overpressure relief valves in long-distance water transmission projects │ Design and selection of vacuum break valves in long-distance water transmission projects │ Analysis and processing of abnormal shutdown events of long-distance natural gas pipeline main line cut-off valves │ Structural characteristics and applications of long-distance natural gas pipeline ball valves │ Welding process of fully welded ball valves for long-distance pipelines │ Introduction to electric control valves for long-distance pipelines and fault analysis and treatment │ Power supply design of remote control valve chambers for long-distance pipelines │ Hydraulic transient analysis and transient condition testing of pressure relief valves for long-distance pipelines │ Application and improvement of pressure relief valves for long-distance pipelines │ Selection of closed condensate recovery systems │ Sealing performance of closing parts of closed-circuit valves │ Research on indirect valve position measurement technology │ Analysis of the installation position of gate valves and check valves in coal mine water pumps │ Research and practice of gate valve parametric design methods │ Emergency treatment of gate valve packing gland fractures │ Common fault analysis and improvement measures of gate valves │ Discussion and common troubleshooting of gate valves │ Gate valve body inlaid valve seat hole measurement measuring tool │ Analysis of causes of gate valve seat deformation and improvement measures │ Gate valve seat extrusion device │ Improvement of the gate valve stem nut and bearing gland structure │ Analysis of the reasons for the gate valve plate falling off and solutions │ Discussion of the strength calculation method of the stud (thread) connecting the valve body and the valve cover │ Comparison of the calculation formulas of the valve body and valve cover connection bolts │ Theoretical basis for the valve body force and strength calculation formula │ Design of the separable Y-shaped globe valve with the valve body │ Stress analysis and optimization design of the valve body four-ring position │ Valve body alignment measuring tool│ Discussion of valve body stress classification and strength assessment│ Valve body strength calculation comparison and analysis│ Valve body fracture failure analysis│ Analysis and solution of valve body trapezoidal thread jamming failure│ Valve body wall thickness The origin and applicability of the valve body wall thickness calculation formula│ Control of porosity defects in valve body castings│ Research on valve body forging manufacturing processes│ Valve trim wear and material selection │ Simulation and experimental research on pressure pulsation in front of the valve │ Valve hall intelligent inspection robot system │ Research on static characteristics of dynamic pressure balanced direct-acting relief valve at the valve port │ Effect of valve opening on the pressure and flow characteristics of a two-way cartridge valve │ Research on the influence of valve port shape on the cavitation flow field of pure water hydraulic poppet valves │ Analysis of scaly tool marks in valve block orifice processing │ Research on the heat treatment process of the valve housing│ Multi-purpose water injection valve with separate valve seat adjustment and cut-off│ Flow field analysis of cone valve with valve seat cone│ Discussion on the industrial application of valve-type continuous circulation drilling device│ Analysis of electro-hydraulic valve blocking problem of valve-controlled liquid-filled hydraulic coupling│ Application of valve-controlled sealed lead-acid battery in the communication power supply system of the middle line of the South-to-North Water Diversion Project│ Maintenance and monitoring of VRLA valve-controlled lead-acid battery │ Valve-controlled asymmetric cylinder friction analysis and compensation research │ Valve-controlled asymmetric cylinder friction force on the cylinder pressure │ Valve-controlled asymmetric cylinder passive electro-hydraulic servo system decoupling control research │ Valve-controlled motor nonlinear modeling and simulation │ Valve stem cylindrical forming grinding process optimization research │ Valve stem seal leakage causes and solutions │ Improvement of valve stem sealing structure │ Research on the ability of valve stem material to resist corrosion and cracking in hydrogen sulfide environment │ Analysis of reasons for valve stem nut fracture │ Discussion of valve stem nut materials and standards │ Improvement of valve stem nut structure │ Valve stem nut (6) jbt1701 │ Valve stem soft packing sealing performance analysis and structural design │ Valve-pump joint control press main hydraulic cylinder system modeling and simulation │ Design and application of automatic high-speed sorting machine for valve discs│ Effect of valve core diameter on the performance of hydraulic poppet valves│ Design of laser alloying fixture for valve core end cap working surface│ Research on laser alloying process of valve core end cap working surface│ Scanning path planning for laser alloying of valve core end cap working surface│ Effect of valve core structure on the flow resistance characteristics and internal flow characteristics of throttle stop valve│ Simulation analysis of the effect of valve core screw pitch on the performance of digital hydraulic cylinder│ Design and simulation of cam curves in valve-matched radial piston pumps │ Design and development of valve CAD2000 system │ Simulation calculation of temperature field distribution of steam drain pipes under different leakage conditions of valves │ Design of thrust plate for connecting valves and electric devices │ Valve and energy saving │ Analysis of flange clearance in valves │ Suitable working temperature of steel and alloy for valve main parts 5 │ Suitable working temperatures of steel and alloys for valve main parts │ Analysis of valve product factory inspection and type test standards │ Discussion of valve product manufacturing supervision and inspection │ Valve products and accessories production and technical management procedures │ Valve companies’ precautions in API audits │ Economical design of valve low-temperature test equipment │ Analysis of the mechanism of aerodynamic noise generation during valve use │ Research on characteristics of acoustic emission detection signals for internal leakage in valves │ Application of valve lining ceramic coating │ Development and application of valve manufacturing process design software 2 │ Development and application of valve manufacturing process design software │ Current status of valve manufacturing technology │ Discussion of type test regulations related to valve manufacturing license │ Valve pressure test process and device 3 │ Valve pressure test process and device │ Valve variable speed drive device design │ Test and research of valve opening and closing torque continuous test device │ Comparison and selection of international valve standards │ Application and selection of valves in pneumatic conveying systems 4 │ Application and selection of valves in pneumatic conveying systems │ Application of valves in oil refining units │ Discussion of common problems in valve type testing │ Valve stuffing box shunt method to eliminate water seepage at pipeline welds │ Brief analysis of valve stuffing box calculation methods │ Elimination of valve packing leakage │ Analysis and research on the calculation formula of valve housing wall thickness│ Discussion on the measurement and evaluation method of local area wall thickness of valve housing│ Valve housing fracture analysis│ Research on CNC programming technology of valve housing series parts│ Valve positioner and intelligent analysis│ Valve positioner pneumatic transmission system modeling and MATLAB simulation analysis│ Discussion of valve positioner installation and adjustment methods│ Design improvement of valve positioner adjustment spring│ Analysis and research on valve seal pair seal design theory and calculation methods │ Calibration method of valve seal packing performance test │ Application of valve seal material PAST reinforced nylon │ Analysis and discussion of valve seal test standards and methods │ Analysis and discussion of valve seal test mounting methods │ Research on valve sealing surface cladding layer thickness │ Research on valve sealing surface cladding material high temperature wear resistance │ Research on No. 137 alloy for manual surfacing of valve sealing surface │ Discussion of valve sealing surface structure and seat back performance │ Processing tools for metal surfacing layer on valve sealing surface │ Research on high temperature and wear-resistant surfacing flux of valve sealing surface │ Development of valve life test bench │ Analysis of transient flow caused by valve opening │ Causes and prevention of valve spring failure │ Valve manual operation guide: MSS SP—91———1992 (R1996) │ Analysis and application of the minimum wall thickness calculation formula of valve pressure-bearing parts │ Valve failure analysis and classification │ Valve failure and its prevention │ Self-repair and on-site maintenance management of valve failure │ Overview of valve fault diagnosis technology │ Comparative analysis of the nitriding mechanism and nitriding result performance of valve materials 9Cr18MoV and 1Cr18Ni9 │ Seismic analysis of nuclear-grade pneumatic actuators of valves │ Valve cavitation research │ Leak detection valves for valve hydraulic testing │ Cause analysis of valve leakage and optimization of design selection │ Automatic detection device for valve leakage │ Methods and precautions for valve activity performance testing │ Valve flow resistance testing device │ Development of data monitoring system for valve flow resistance testing device │ Valve hydraulic servo actuator │ Valve leakage molding machine │ Research on valve thermal spraying technology │ Valve thermal stress analysis and research │ Valve weldment deformation and control │ Discussion of valve welding related standards │ Online monitoring of valve status │ Experimental research on valve ring bolt assembly assembly process │ Valve ring bolt assembly assembly process finite element simulation │ Performance analysis of CF stainless steel castings for valves │ Special material bellows for valves │ Granular packing for valves │ Corrosion-resistant duplex stainless steel for valves │ Selection of working temperature of auxiliary materials for valves │ Finite element analysis of fatigue life of metal bellows for valves │ Selection and application of metal bellows for valves │ Selection and research of copper alloy materials for valves │ Anti-rotation structure of valve electric lifting rods │ Design of valve electric actuators and channel testers │ Research on fault diagnosis of valve electric actuators │ Analysis of main transmission structure of valve electric devices │ Key points of valve electric device and its selection │ Improvement of valve electric device wire lap connection process │ Problems and countermeasures of valve electric device opening indication system │ Research and application of valve electric device testing system │ Analysis of causes of damage to valve electric device motor │ Classification and selection of valve electric device │ Analysis of transmission type of valve electric device stroke mechanism │ Comprehensive introduction to valves │ Practical anti-rust technology for valves 4 │ Practical anti-rust technology of valves│ Micro leakage level and industrial application of valves│ Inspection and testing of valves│ Leakage of valves and treatment methods│ Flow test and analysis of valves│ Cleaning and anti-rust of valves│ Welding and heat treatment of valves│ Fire resistance test of valves│ Selection of valves and technological development│ Common structural forms of butt welding end grooves of valve pipelines with unequal wall thickness│ Research on valve fire resistance test methods│ Valve corrosion failure analysis and treatment │ Valve bolt fracture failure analysis │ Valve bolt fracture failure analysis │ Valve industry “Eleventh Five-Year Plan” localization development trend │ Valve industry short-term and long-term overview │ Valve industry high-tech development trends and investment directions │ Facility planning and simulation of valve assembly workshops │ Improvement of valve pressure test pumps │ Valve pressure test devices │ Valve quality and standards 4 │ Valve quality assurance manual template │ Valve selection standards and requirements │ Factory practice of valve emission testing standards │ Quality control of valve procurement │ Establishment of valve metal material process consumption quota │ Impact of surface defects on verification and countermeasures in radiographic inspection of valve castings │ Improvement of valve casting process │ Exploration and practice of computer-aided design of valve steel casting process │ Anti-corrosion nitriding of valve stems │ Valve parts processing fixtures│ Surface cleanliness of valve parts│ Valve gearbox maintenance research│ Development and application of anti-bias flow control steam injection valve│ Analysis of the handle position of the three-position four-way rotary valve of the blowout preventer control device│ Re-discussion of the handle position problem of the three-position four-way reversing valve of the blowout preventer remote console│ Design and installation of a new check valve to prevent the reverse flow of transformer oil│ Numerical simulation and experimental research on the flow field of the waterproof hammer spherical check valve│ Design and selection of fire emergency isolation valves │ Design and research of fire dampers │ Improved design and analysis of hydraulic brake valves for explosion-proof rubber-tired vehicles │ Use of explosion-proof membranes in safety valves │ Simulation analysis of the impact of explosion-proof valves on the dynamic characteristics of closed systems │ Application of anti-theft check valves in the rapid refueling system of large mining vehicles │ Anti-theft valves │ Anti-corrosion vacuum pressure valves │ Calculation and selection of control valves under blocked flow conditions │ Research on the stability of hydraulic valves caused by damping settings │ Experimental research on pressure drop characteristics of adjustable damping gap magnetorheological valves │ Research on reducing the damage rate of bellows of low-temperature stop valves │ Research on manufacturing technology of deaerator spray valves │ Application of ceramic coating technology in valves │ Application of ceramic ball valves in the coal chemical industry │ Application and structural design of ceramic ball valves │ Application of ceramic valves │ Characteristics of ceramic valves and their application prospects │ Operation manual of diaphragm proportional control valve │ Compartment flat gate valve │ Design and application of integrated oil tank sampling valve │ Renovation of gas gathering station flow meter valve group venting system │ Design analysis of foot valve for container tank │ Influence of zero gap and temperature change on nozzle damper valve │ Zero-leakage triple-eccentric metal-sealed butterfly valve│ Structural design and application research of special valves for start-up buffering in zero-coverage state│ Application of Hall elements in valve position monitoring│ Modification and application of stationary vane proportional valve control system│ Rapid calculation method of non-full circumferential opening slide valve port area│ Non-uniformly heated liquefied petroleum gas storage tank pressure response and valve action simulation│ Cold-state experiment on the regulation characteristics of asymmetric structure pneumatic distribution valve│ Analysis of technical requirements and type test standards for non-refillable bottle valves │ Research and development of packaging equipment control systems for aerosol valves │ Design of constant pressure and constant flow water supply systems for performance testing of water inlet solenoid valves │ Brief analysis of pressure test standards and requirements for project site control valves │ Research on sequence control main line breaker valves │ Application of sequence valves in hydraulic systems of truck cranes │ Smooth closing stop valves │ Application of pre-oxidation + thermal cycle body nitriding process in valves │ Finite element analysis and optimization of pre-selected valve body │ Optimization and improvement of pressure regulating valve structure in aircraft fuel filling system │ * * Maintenance difficulties and treatment methods of terminal valves │ Discussion on the cold working process of martensitic gas valve steel │ Analysis and improvement of cab front suspension height valve assembly failure factors │ Valve pressure test device for acceptance │ Development direction of medium and medium pressure valve production technology and equipment technology │ Research on the structure of high-pressure three-way valves │ Three-dimensional flow field simulation and valve core failure analysis of high-pressure well control wedge-shaped throttle valves │ Comprehensive noise level prediction analysis of high-pressure pilot axial flow natural gas pressure reducing valve │ Structural design and application of high-pressure pressure reducing valve │ Use and requirements of high-pressure hydrogenation device valves │ Working condition requirements and technical analysis of high-pressure hydrogenation device valves │ Development and application of high-pressure heater protection valves │ Experimental research on the characteristics of high-pressure dual solenoid valves controlling fuel injection systems │ High-pressure safety valve debugging device │ Design and simulation of high-pressure difference micro-flow control valves │ Application of high-pressure parallel gate valves in hydrogenation units │ Design improvement of high-pressure switch circuit breaker spring hydraulic operating mechanism control valve │ Analysis and improvement of high-pressure reciprocating pump packing and pump valve faults │ Structural design of high-pressure control valves │ High-pressure plunger pump valve box failure analysis and anti-fatigue design │ High-pressure check valve fracture failure analysis │ Research on materials for high-pressure gas compressor valve plates │ Improvement of high-pressure relief valve pilots │ Gas nitriding of high-pressure mud valve valve plate and valve stem│ Research on response characteristics of high-pressure seawater pump valve flow distribution system│ Research on high-pressure noise reduction ball valve│ High-pressure liquid hydrogen safety valve│ Design of high-pressure clean water control valve│ Research on multi-valve body phase difference flow adjustment technology of high-pressure solenoid valve│ Experimental study on electromagnetic transient characteristics of converter valve switching in high-voltage DC converter station│ Design of verification device for high-voltage direct current transmission valve cold system flow instrumentation │ Design of high-pressure pipeline valve pressure test device │ Research and application of high-pressure automatic flow meter valve seat extractor │ Research on erosion mechanism of high-pressure throttle valve │ Analysis of throttling characteristics and fluid-solid coupling failure of high-pressure throttle valve │ Analysis of the impact of high-pressure testing on the performance of self-tightening check valves │ New structural design of high-pressure valves 3 │ Discussion on on-site pressure testing methods of high-pressure valves│ Repair of high-pressure valves│ Process design and application of high-pressure valve castings│ Application of high-reliability valve control circuits│ Development and use of high-strength oil delivery valve covers│ Development of high-performance large-flow impact-resistant safety valve test equipment│ Application of high-tech structural ceramic materials on large-diameter industrial valves│ Three-dimensional numerical simulation of high-head ship lock valve section shape optimization│ Practical evaluation of high head butterfly valves and ball valves │ Analysis of opening pressure difference characteristics of high-concentration solid-liquid two-phase ball valves │ Development and field testing of high-temperature gel valves │ Design of high-temperature fixed-ball two-way wear-resistant ball valves │ Design of expansion compensation for small-diameter triple-eccentric butterfly valves under high-temperature conditions │ Improvement of high-temperature blending valve cores │ Development and application of high-temperature electric gate valves │ Structural design of high-temperature butterfly valves │ High temperature grade and main material of high temperature valve Lejingjing5 │ High temperature grade and main material of high temperature valve │ Key technologies in high temperature valve design │ High temperature and high pressure Y-shaped bellows stop valve │ Analysis of cracking failure of high temperature and high pressure hydrogen facing pipeline valve │ Analysis of manufacturing process of high temperature and high pressure hydrogen facing valve │ Sealing structure design of high temperature and high pressure eccentric semi-ball valve_Li Guangjun 2 │ Progress and application of high-temperature and high-pressure small-diameter stop valves │ Analysis of fluid-solid-thermal coupling of high-temperature and high-pressure nuclear power gate valves │ Analysis of thermal-structural coupling of high-temperature and high-pressure ball valve spheres │ Design and calculation of high-temperature and high-pressure power station flat gate valves │ High-temperature and high-pressure valve casting manufacturing processes and applications │ Design of high-sensitivity and high-pressure safety valves │ Application analysis of blast furnace TRT start valve control technology │ Analysis and application of excessive vibration of blast furnace pressure reducing valve group │ Treatment of blast furnace relief valve failure │ New wedge gate valve for blast furnace │ Reason analysis and solutions for automatic opening of blast furnace top DN550 relief valve │ Blast furnace top relief valve │ Numerical simulation of blast furnace gas pressure reducing valve │ Analysis of adjustment performance of blast furnace gas system pressure reducing valve group │ Cold air relief valve for blast furnace │ Disc gas relief valve for blast furnace │ Numerical simulation of energy-saving transformation of check valve of blast furnace blast system │ Analysis of balancing valve problem of aerial work vehicle │ State space modeling and digital design of high-precision pneumatic servo valve │ Analysis and improvement of high-precision hydraulic slide valve clamping problem │ Common faults and solutions in the operation of advanced orifice valves │ High-quality steam traps │ Simulation study on the performance of relay valves used in high-speed EMU braking systems│ High-speed and large-flow two-position three-way switching solenoid valves│ Solenoid design of high-speed switching digital valves│ Exploration of the application of high-speed switching solenoid valves in military engineering machinery│ Simulation research on the injection hydraulic system of high-speed switching valve pilot control injection molding machines│ Research on the static characteristics of typical combination control valve bodies of high-speed switching valves│ Performance research on piezoelectric actuators for high-speed switching valves│ Research on the characteristics of high-speed on-off valve-controlled cartridge valves│ Adaptive robust control of high-speed on-off valve-controlled pneumatic position servo systems│ Experimental research on the flow characteristics of high-speed on-off valves│ Research on hydraulic power compensation of high-speed on-off valves│ Research status of high-speed on-off valves│ High-speed on-off valve direct-controlled closed-loop hydraulic synchronization system│ Broadening of the effective duty cycle working range of high-frequency pulse width modulation control of high-speed on-off valves│ Simulation research on high-speed electro-hydraulic servo valve controlling axial piston pump│ Research on static characteristics of high-speed electromagnetic on-off valve│ High-speed vent valve pressure valve flow field analysis and opening and closing characteristics research│ Pneumatic modeling and experimental research on the opening process of high-speed vent valve│ High-frequency electro-hydraulic servo valve working principle and zero bias online adjustment│ Technical transformation of turbine vacuum breaking valve of the Yellow River Grand Gorge Hydropower Station│ Brass valve body hot forging process and mold│ Discussion on the Selection and Calculation of Black Water Control Valve│ Hydraulic Model of Toothed Float Valve Tray│ ├─A total of 120 episodes of a series of fault diagnosis papers on valve design, manufacturing and maintenance│ The first episode of a series of fault diagnosis papers on valve design, manufacturing and maintenance│ └─Valve Design, Manufacturing and Maintenance Fault Diagnosis Thesis Series Volume 1, 120 episodes in total 103 JAT lifting plate valve pull fracture causes analysis and preventive measures 203C explosion-proof plate blasting and HV202 valve after-burning causes and measures 40T hybrid magnet low-temperature distribution valve box control system design 6000t hydraulic press working cylinder and liquid filling valve analysis A27 type safety valve structural improvement ANSY Application of S in valve research and development Analysis of structural characteristics of API6DDBB and DIB type pipeline valves Application of AutoLisp in calculation of valve driving torque Application of Class A pipelines and valves used in Class A pipelines Design of BQ double eccentric semi-ball valve Structural design of natural circulation flap valve of CARR reactor Application and maintenance of DANFLO pressure relief valve on long-distance oil product pipelines EO∕EG Device OMS Control scheme for key valves in the safety interlock system Application of Fisher intelligent valve positioner in chemical equipment Application of harsh working condition valves in GSP gasifier and practical application and transformation of domestic ITCC system in double solenoid valve control circuit LM-A4 Application of LD valve controller Study on manual grinding process of sealing surface of LNG low-temperature cut-off valve Study on the application of emergency shut-off valve in LNG gasification station Discussion on the production process of low-temperature valves for LNG Discussion on workshop air tightness test and tooling design of key valves in LNG pipeline corridor Comparison of PE ball valve and metal valve PMK regulator to realize valve position selection complex control system In-depth maintenance of S-Zorb programmable valve, online replacement and reflection of SA/CL-1-EP type valve positioner, structural optimization of V-shaped regulating ball valve, debugging of hydraulic device of YT type governor and treatment method of safety valve failure, reasons why the safety valve does not reset and countermeasures that need to be taken, number of issues that should be paid attention to during the installation and use of the safety valve. txt Create a new text document.bat