The turbine experiences excessive vibration from time to time

In such cases, it is generally due to the carbonization of the lubricating oil used in the turbine oil seal under high-temperature conditions, which results in carbon buildup on the oil seal and causes periodic collisions with the turbine rotor.

Are there any good ways to deal with this?

If that is the case, considering using a filter membrane machine to filter the lubricating oil might be an option.

First, it is necessary to confirm whether it is actual vibration by testing it while holding it in the hand

The last edit to this post was made by Shutong on January 8, 2023, at 23:16. Papers and materials on turbine vibration diagnosis can be found in Shutong’s database. Topics include: Handling vibration faults in 125MW turbines; Analysis of the vibration mechanisms of the low-pressure rotor in 300MW turbines; Handling vibration faults in 300MW turbines; Analysis of the causes and solutions for excessive vibration in the bearing shells of 300MW turbines; Analysis and handling of abnormal vibrations in the low-pressure rotor of 600MW turbines; Analysis of the vibration and fatigue characteristics of the shafting before and after repair of the low-pressure rotor in 600MW turbine units; Analysis of shafting vibrations in CLN 600MW turbine units; Control measures for shafting vibrations in GBT 11348.2-2012 “Measurement and evaluation of radial vibration of rotating machinery shafts – Part 2”: Turbines and generators installed on land with a rated speed of 1500 r/min, 1800 r/min, 3000 r/min, or 3600 r/min and a capacity of over 50MW; Analysis and handling of vibration faults in N1.0-35 type industrial turbines; Analysis and handling of vibration in the bearing of the low-pressure rotor of N200 type turbines; Diagnosis and handling of multiple vibration faults in the rotor of a 50MW turbine; Analysis of the causes of vibration in a domestically produced 300MW turbine; Diagnosis and control of shafting vibration faults in Sanmenxia 300MW turbines; Analysis of the stiffness and vibration characteristics of the low-pressure outer casing of Dongfang’s 660 MW super-supercritical secondary reheating turbine; Fault diagnosis of bearing vibrations in Unit 1 of Wuyang Thermal Power Plant; Computational analysis of vibration characteristics of the medium-pressure rotor in Russian-made 800MW turbine units; Experimental study on the damping vibration characteristics of long turbine blades with integral shrouds and protruding ribs; Use of brush seals with commutators to reduce turbine vibrations and improve efficiency; Vibration issues in Beijing Beichong Turbine’s 100,000-unit turbines.doc; Diagnosis and handling of high-pressure rotor vibration faults in Huaneng Beijing Thermal Power Plant’s Unit 2; Analysis of the causes of rubbing vibrations in compression unit turbines; Analysis of the causes of turbine vibrations after the modification of synthesis gas compressors; Time-frequency analysis of sudden large imbalances in turbine rotor vibrations using HHT; Research on a turbine vibration fault diagnosis system based on wavelets and neural networks; Design and development of a remote turbine vibration fault diagnosis system based on fuzzy expert systems; Feature extraction of turbine rotor vibration faults based on manifolds; Analysis of vibrations in coal-fired turbine engines using on-site dynamic balancing techniques; Analysis of vibrations in coal-fired turbine engines using on-site dynamic balancing techniques – Jiang Jingjun; Discussion on identifying and eliminating rubbing vibrations in large turbine units; Analysis and handling of vibration faults in industrial turbines; Causes of abnormal vibrations in steam turbine units 2.doc; Application of digital signal processing technology in measuring turbine unit vibrations; Diagnostic techniques for analyzing vibrations in rotating machinery turbines – PPT 211; Analysis and handling of vibration faults in a 200MW turbine unit; Analysis and handling of vibrations in the feedwater pump turbine of a 300MW unit; Resolution of startup vibration faults after modifying the turbine seals of a 300MW turbine unit; Analysis of the vibration characteristics of the entire set of long blades in the final stage of nuclear power turbine blades with a length of 1710 mm; Preventive measures to avoid vibration-induced rubbing in the cooling tubes of nuclear power turbine condensers; Research progress on vibration characteristics of long blades in the final stage of nuclear power turbines; Influence of the ellipticity of elliptical sliding bearings on turbine vibrations; Mechanism analysis and experimental research on abnormal shafting vibrations caused by changes in turbine power control modes; Analysis and research on methods for denoising vibration signals resulting from dynamic and static rubbing in turbines; Vibration control methods for bent turbine rotors; Optimization and discussion of turbine vibration protection logic; Causes and handling of turbine vibration faults; Analysis of turbine vibration characteristics and fault identification; Mechanisms and hazards of turbine vibrations; Prevention and maintenance tips for turbine vibrations; Research on the vibration mechanisms caused by the detachment of rotating components in turbines; Analysis of vibration characteristics of the final stage turbine blades; Diagnosis of vibration caused by carbonization and friction due to dirt accumulation in turbine oil filters; Misconceptions regarding the treatment of carbonization and friction vibrations in turbines; Analysis and handling of vibration faults in turbine units 2; Unstable vibration phenomena caused by broken bolts in turbine couplings; Strength analysis and safety assessment of the moving blades in turbine regulation stages; Experimental research on the impact of the inlet conditions on turbine vibrations in regulation stages; Research on vibrations occurring when turbine control valves are opened to a small degree; Analysis of the causes of excessive vibration in turbine bearing shells.doc; Online monitoring and fault diagnosis systems for turbine shafting vibrations; Remote monitoring of turbine shafting vibrations; Discussion on measures for dealing with abnormal vibrations in thermal power plant turbines; Analysis of vibration problems in power plant turbine units and corresponding solutions; Experimental research on vibrations in power plant turbine control valves; Chapter 3: Strength and vibration of turbine components.ppt; Influence of flexible pipeline design on vibrations in synthesis gas compressor turbines; Analysis and handling measures for causes of abnormal vibrations in steam turbines 2.doc; Analysis and handling of unstable vibrations in supercritical air-cooled 660MW turbine units; Unstable vibrations in turbines under partial inlet conditions and methods to suppress them; Experimental research on instability in the shafting vibrations of turbine regulation stages under partial inlet conditions

Steam turbine books are all in Shutong Database 11-027 Vocational Skill Appraisal Guide Steam Turbine Speed Regulation System Overhaul Second Edition 125~300MW Thermal Power Unit Boiler, Steam Turbine, Electrical, Instrument and Control Equipment Safety Commissioning Operation and Danger Point Prediction Pre-control Fault Analysis Technical Manual 200MW Thermal Power Generation Unit Operation Technology Series Steam Turbine Operation 200MW Thermal Power Generation Unit Operation Technology Series - Steam Turbine Operation 200,000 KW Steam Turbine Operation 300MW Thermal Power Generator Series Steam Turbine Equipment and Systems Wu Jilan 1998 300MW Steam Turbine Science* Data (main machine, auxiliary machine) 300MW Thermal Power Generator Set Operation and Maintenance Technical Training Materials·Steam Turbine 300MW Thermal Generator Set Operation and Maintenance Technical Training Materials·Steam Turbine 300MW Thermal Power Plant Training Series Steam Turbine Equipment and Systems Shanxi Zhangze Electric Power Co., Ltd. Co., Ltd. compiled the 2015 edition of the 5-100MW steam turbine operation 600MW thermal power unit training textbook Steam turbine equipment and its system Electrical Engineering Society of Six Provinces and One City in East China 600MW Thermal Power Unit Training Textbook Steam Turbine Volume 600MW Thermal Power Unit Operation Technology Series Steam Turbine Volume. China East China Electric Power Corporation Science and Technology Committee 600MW Thermal Power Generation Unit Operation Technology Series Steam Turbine Volume 600MW Supercritical Thermal Power Unit Operation Technology Questions and Answers Series Steam Turbine Operation Questions and Answers Zhang Bin, You Jing, Zhang Lei Editor-in-Chief, 2015 edition of 660MW ultra-supercritical thermal power generation unit training materials, steam turbine volume, 2011 edition of 660MW ultra-supercritical thermal power generation unit training materials, thermal control volume, 2011 edition of small and medium-sized thermal power plant production equipment and operation 605 Research on industrial turbines for waste energy recovery Li Yanpin’s 2016 edition of the Almighty Attendant Skills Improvement Guide Series Steam Turbine Volume Chemical Equipment Technology Questions and Answers Series Industrial Steam Turbine Technology Questions and Answers Unit Unit Operation 272 Unit Unit Operation (Higher Education) 262 Unit Unit Central Control Attendant Training and Assessment Question Bank Steam Turbine Volume 2012 Edition Unit Unit Central Control Operation and Skills Training edited by Lei Ming 2012 Power Plant Thermal System and Equipment Power Plant Thermal Equipment Generator and Electrical Thermal Power Plant Maintenance Deficiency Elimination Technical Questions and Answers Series Impeller Working Machine and Prime Mover Technology Series 306 Impeller Machinery 157 Illustration of 1000MW ultra-supercritical unit equipment inspection and local power plant operation training materials. Vibration analysis of flue gas turbine based on on-site dynamic balancing technology_Jiang Jingjun High-power steam turbine overhaul High-power power station steam turbine life prediction and reliability design 2011 edition Large fertilizer synthesis gas compressor steam turbine control system transformation and operation Large condensing unit heating transformation 2012 large steam turbine generator design, manufacturing and operation 2012 large steam turbine installation (volume 1 and 2) Large steam turbine installation volume 1 and 2 525 Large steam turbine starting and stopping and test adjustment Large thermal power plant production technician training series of textbooks Steam turbine control, monitoring and protection Practical technology series for large thermal power unit overhaul Steam turbine volume Large thermal power unit operation and maintenance training textbook Steam turbine volume 2009 edition of large thermal power equipment manual Steam turbine generator Large thermal power equipment manual Steam turbine small thermal power plant - steam turbine equipment and operation 280 Small thermal power station practical design manual 83 Industrial Steam Turbine 270 Industrial Steam Turbine Power Plant Industrial Steam Turbine Technology Q&A 327 Industrial Steam Turbine Technology Q&A - Chemical Equipment Technology Q&A Series Industrial Steam Turbine Equipment and Operation Technology Q&A 2013 Edition Industrial Steam Turbine of 300,000-ton Synthetic Ammonia Plant with Annual Output of 30 Ton Synthetic Ammonia Plant Industrial Steam Turbine Micro Gas Turbine Power Generation Technology 2012 High-definition Copiable Text Version Application of Support Vector Machines in Steam Turbine Condition Monitoring 2012 Edition New Steam Turbine Maintenance Technology Wang Jintian 218 New Steam Turbine Maintenance Technology General Higher Education Ship Planning Textbook Ship Steam Turbine Power Plant Mechanical Engineering Manual Volume 11 Chapter 3 Steam Turbine Nuclear Power Steam Turbine Nuclear Power Wet Steam Turbine 2013 Edition Basic Theory and Design of Pelton Turbine 131 Hydropower Station Power Equipment Zheng Yuan 265 Hydropower Station Mechanical and Electrical Design Manual Hydraulic Machinery 733 Water Turbine 443 Cavitation and Cavitation in Water Turbine 131 Comprehensive Technical Manual on Turbine Overhaul, Troubleshooting, Operation, Commissioning and Maintenance, 4 volumes in total. Hydraulic calculation of turbine 265. Mechanical overhaul of turbine governor 411. Turbine Part Volume Steam Turbine Technical Specifications Volume 3 Steam Turbine Installation and Regulation 247 Turbine Generator and Electrical Equipment Volume 3 Second Edition Turbine Generator Fault Inspection Analysis and Prevention 2nd Edition 2010 Edition Turbine Generator Set Torsional Vibration Safety Analysis and Application 2013 Turbine Generator Set Vibration 107 Vibration fault diagnosis and cases of turbine generator units Lu Songyuan and Wu Zhengfeng 2016 edition Steam turbine generator rotor typical problem analysis and fault diagnosis Wu Yucai and Li Yonggang 2015 edition Steam turbine volume 226 Steam turbine (volume 1) 246 Steam turbine 300MW thermal power generation unit operation and maintenance technology training material · Steam turbine 339 Steam turbine 350 Steam turbine volume 1 Chang Guilian 242 Steam Turbine - Volume 2 Metal Materials Manual for Steam Turbine, Boiler and Generator 500 Metal Material Manual for Steam Turbine, Boiler and Generator Steam Turbine Instruction Manual 241 Steam Turbine Volume 267 Steam Turbine Volume Thermal Power Plant Maintenance and Defect Elimination Technical Questions and Answers Series 427 Steam Turbine Principle 211 Steam Turbine Principle 396 Steam Turbine Principle 2014 Edition 269 Steam Turbine Principle China Electric Power Press 238 Principles of steam turbines Huazhong University of Science and Technology. Jian Tiancong Hydropower Press 1992 390 Principles of steam turbines compiled by Kang Song et al. Principles of steam turbines Huang Shuhong 370 Principles of steam turbines Huang Shuhong Principles of steam turbines. Huazhong University of Science and Technology. Jian Tiancong Hydropower Press 1992 Principles and structures of steam turbines 270 Principles and structures of steam turbines Huang Baohai 2002 Principles and operation of steam turbines Chen Ruqing 272 Steam Turbine Principles Less Credit Hours 2012 Edition Steam Turbine Principles Course Design Basis 2012 Basics of Steam Turbine Units Steam Turbine Devices and Regulations 249 Steam Turbine Devices and Regulations Steam Turbine Equipment Incidents and Prevention 2015 Steam Turbine Equipment and Systems 260 Steam Turbine Equipment and Systems 2014 394 Steam Turbine Equipment and Systems 371 Steam Turbine Equipment and Systems 2011 Edition 634 Steam turbine equipment and system energy saving 184 Steam turbine equipment and operation vocational education power technology professional teaching book 281 Steam turbine equipment and operation 2013 steam turbine equipment and operation edited by Yang Qiaoyun and Li Jiangang 2014 edition steam turbine equipment installation 2013 steam turbine equipment installation and maintenance Q&A edited by Yuan Ming, Yang Xiaogang, Shao Derang 2016 edition steam turbine equipment installation technology Kant 290 Steam Turbine Equipment Fault Diagnosis and Prevention 2011 Edition Steam Turbine Equipment Overhaul 582 Steam Turbine Equipment Overhaul 2014 556 Steam Turbine Equipment Overhaul Intermediate Workers 313 Steam Turbine Equipment Overhaul Intermediate Workers Steam Turbine Equipment Maintenance Thermal Power Generation Vocational Skills Training Textbook 511 Steam Turbine Equipment Maintenance Senior Workers Steam Turbine Equipment Overhaul (Intermediate Workers) 313 Steam Turbine Equipment Maintenance (Junior Workers) 287 Steam turbine equipment maintenance (senior engineer) 354 Steam turbine equipment maintenance-Thermal power generation vocational skills training textbook 510 Steam turbine equipment maintenance * Questions and Solutions 334 Practical Technology for Steam Turbine Equipment Maintenance 2012 Steam Turbine Equipment Maintenance Technology (Trial Book) - Training Materials for Intermediate Workers in Thermal Power Production Q&A on Steam Turbine Equipment Maintenance Technology 482 Q&A on Steam Turbine Equipment Maintenance Technology for Junior Workers 449 Q&A on Steam Turbine Equipment Maintenance Technology for Junior Workers 470 Steam turbine equipment maintenance technology Q&A Steam turbine equipment operation (original revised version) - (Su) B.Э. Kabelovich Steam turbine equipment operation and accident handling 2006 edition Wang Yulin 341 Steam turbine equipment operation and accident handling second edition 2012 steam turbine equipment operation and accident handling Steam turbine equipment operation technology (trial version) - Shanxi Electric Power Industry Bureau Steam turbine equipment operation technology Steam turbine equipment operation technology Q&A Wang Guoqing 491 Steam turbine equipment operation technology Q&A Typical examples of steam turbine design and manufacturing, installation and commissioning, operation monitoring, fault diagnosis and elimination, new maintenance processes, new technologies and technical transformation 1332 Typical examples of steam turbine design and manufacturing, installation and commissioning, operation monitoring, fault diagnosis and elimination, new maintenance processes, new technologies and technological transformation Steam turbine design basics 350 Steam turbine design basics Steam turbine test Editor-in-chief Liu Kai Electric Power Edition 2005 Steam turbine test Electric power test technology series - Steam turbine test_Editor-in-Chief Liu Kai 371 Steam Turbine Testing Technology Steam Turbine Course Design 2012 Steam Turbine Course Design Reference - Feng Huiwen 190 Steam Turbine Course Design Reference - Feng Huiwen Steam Turbine Regulation and Protection System Sichuan Electric Power Company 109 Steam Turbine Regulation and Protection System Installation and Adjustment of Steam Turbine Regulation System 257 Installation and adjustment of steam turbine regulating system Steam turbine debugging technology and common fault handling Editor-in-chief Cheng Guibing 2016 edition Steam turbine speed regulation installation China Electric Power Press 307 Steam turbine auxiliary machinery installation China Electric Power Press 339 Steam turbine auxiliary machinery installation 327 Steam turbine auxiliary machinery installation Steam turbine dictionary Steam turbine operation 2014 Steam turbine operation and maintenance professional volume 120 Steam Turbine Operation and Maintenance Technology 2012 Steam Turbine Operation and Maintenance 2014 Edition Steam Turbine Operation Attendant Electric Power Engineering Steam Turbine Operation and Maintenance Professional (Second Edition) 371 Steam Turbine Operation Attendant Electric Power Engineering Steam Turbine Operation and Maintenance Professional (Second Edition) Steam turbine operation and accident handling 2012 steam turbine operation training guide Liu Hongtao, Yi Yanhong 2010 edition steam turbine operation performance diagnosis technology and its application 230 Steam turbine operation performance diagnosis technology and its application Steam turbine operation technology Q&A 750 Steam turbine operation technology Q&A Zhang Lei 192 Steam turbine operation technology Q&A Zhang Lei Steam turbine operation technology Q&A. East China Electric Power Administration Bureau steam turbine operation and maintenance 62 Analysis of the three-dimensional flow characteristics of the steam turbine through-flow part. Application of the 2015 version of the turboexpander in natural gas processing systems - Soviet version 184 Thermal Power Plant Maintenance and Defect Elimination Technical Questions and Answers Series Steam Turbine Volume Thermal Power Plant Energy Saving Technology Series Steam Turbine Equipment and Systems Energy Saving Thermal Power Generation Vocational Skills Training Textbook Steam Turbine Equipment Overhaul Thermal Power Equipment Technical Manual Volume 2 Practical Steam Turbine Thermal Power Equipment Overhaul Series Steam Turbine 2015 Thermal Power Plant Steam Turbine Equipment and Operation Large Thermal Power Plant Production Technology Training Series Thermal Power Plant Steam Turbine Fault Diagnosis, Analysis, Processing and Technical Transformation Manual Thermal Power Plant Steam Turbine Operation, Commissioning, Inspection and Maintenance Technical Manual Thermal Power Plant Thermal Equipment and Operation Steam Turbine part 2012 edition of technical questions and answers on production positions in thermal power plants Steam turbine overhaul 2013 edition of technical questions and answers on production positions in thermal power plants Steam turbine maintenance "Technical questions and answers on production positions in thermal power plants" compiled by the editorial board 2012 edition of technical questions and answers on production positions in thermal power plants Steam turbine operation The editorial board of "Technical Questions and Answers on Production Positions in Thermal Power Plants" compiled the 2010 edition of the Technical Questions and Answers on Production Positions in Thermal Power Plants Series Steam Turbine Operation 300 Questions. Jian Angang compiled the 2014 edition of Thermal Power Engineering Commissioning Technical Manual Steam Turbine Volume Thermal Power Construction Engineering Construction Technology Demonstration Manual Maintenance 2 Thermal Power Construction Quality Inspection and Assessment Standard Steam Turbine (98th Edition) Thermal Turbine Mechanical Devices 2014 Edition Thermal Technology Manual Volume 3 Steam Turbine Unit Thermal Technology Manual (Volume 3) Steam Turbine Unit 591 Gas Turbine and Steam Turbine Gas Turbine and Steam Turbine Equipment and Operation Editor-in-chief of the series Zhang Lei ； Li Guanghua, Editor-in-Chief ； Zhang Xueran, Shao Derang, Wang Huagao, Liu Peiyong, Cao Xizhong – Associate Editors. 2015 edition: Gas Turbine Engineering Handbook, 3rd Edition. Compiled by Boyce (USA). 2012 edition: Modern Hydroturbine Regulation Techniques. 322: Modern Hydroturbine Governors and Their Adjustment and Testing. 2012 edition: Textbook for Professional Qualification Exams in Power Engineering Quality Supervision – Turbine Section. Compiled by Sun Yucai, Power Engineering Quality Supervision General Station. 2014 edition: Question Bank for Professional Qualification Exams in Power Engineering Quality Supervision – Turbine Section. Compiled by Power Engineering Quality Supervision General Station. 2014 edition: Guide to the Application of Regulations and Standards for Inspection and Evaluation of Power Construction Quality – Turbine Section. Guide to the Application of Regulations and Standards for Inspection and Evaluation of Power Construction Quality – Turbine Section. Volume 5 of the Negative List of Power Construction Standards: Turbine Generators. Compiled by China Power Construction Expert Committee. 2015 edition: Technical Questions and Answers for Production Positions in Power Construction Enterprises – Turbine Installation. 2017 edition: Technical Questions and Answers for Production Positions in Power Construction Enterprises – Turbine Governor Installation. 2017 edition: Technical Questions and Answers for Production Positions in Power Construction Enterprises – Turbine Auxiliary Equipment Installation. 2017 edition: Training Materials for Continuing Education in the Power Industry: Operation and Accident Handling of Power Plant Turbines. Power Plant Turbines, 2nd Edition. Compiled by Sun Weimin and Yang Qiaoyun. 2010 edition: Principles and Systems of Power Plant Turbines, 2nd Edition. Power Plant Turbine Equipment. Compiled by Sun Weimin and Gao Qinglin. 2015 edition: Operation and Accident Handling of Power Plant Turbines. Training Materials for Continuing Education in the Power Industry: Technical Questions and Answers on Power Plant Turbine Generators. Series on Technical Questions and Answers regarding Petrochemical Equipment: Technical Questions and Answers on Power Plant Turbine Generators. Digital Electro-Hydraulic Control System for Power Plant Turbines – DEH. Series on Technical Questions and Answers regarding Petrochemical Equipment: Technical Questions and Answers on Turbines (2nd Edition). Series on Technical Questions and Answers regarding Petrochemical Equipment: Technical Questions and Answers on Power Plant Turbine Generators. Part 1: Installation, Commissioning, Operation, Maintenance, Fault Diagnosis, and Repair of Hydroturbines. 2370. Part 2: Turbine Equipment and Its Systems in Power Plants. 144. Part 2: Turbine Equipment and Its Systems in Power Plants. 50. Part 2: Commissioning, Operation, Maintenance, and Accident Handling of Turbine Equipment in Thermal Power Plants. 231. Selected Questions from the Vocational Skill Assessment Question Bank for the Petroleum and Petrochemical Industries: Turbine Auxiliary Equipment Operators. Compiled by the Vocational Skill Assessment Guidance Center of Sinopec Group. 2008 edition. Steam Turbines. 415. Startup and Operation of 600MW Supercritical Pressure Units (Book). Turbine Equipment and Systems for Ultra-Supercritical Units. Introduction to Turbine Engineering, 2nd Edition. 2014 edition. Turbine Engineering Handbook (Combined Volume with Bookmarks). Materials for Turbine Engineering. Introduction to Turbines. Principles of Turbines. 405. Series on Modern Manufacturing Technologies for Turbomachinery: Manufacturing Technologies for Structural Components. 1st edition, 2002. 319. Structure and Strength Calculation of Turbine Parts. 275. Theory and Applications of High-Head Francis Hydroturbines. 2015 edition

I agree with what was said on the second floor; we have experienced similar situations, and the frequency of vibration is more or less the same. If the vibration is caused by carbon buildup, it won’t result in the vehicle stopping. However, preparations should be made to inspect and replace the oil seal and turbine air seal during major repairs.

It might be related to the load during the coking process in your coking tower; check whether it occurs during that process

It wasn’t during the defocussing process, and no adjustments were made to the process during vibration; all process parameters were normal as well.

From a trend perspective, this vibration is relatively regular. The causes of equipment vibration are complex and difficult to determine. The problem is on the front end; check the support for the turbine steam inlet pipeline, the bearing housings, the front cylinder guidance, and the cat claws.