Special lecture on moving equipment "Pump", learn some knowledge every day (3) "Enrich yourself”

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This post was last edited by tclz007 on 2013-12-6 13:38 in order to allow everyone to come to discuss more actively and learn more actively* , where the top five sofas each time will receive "learning * Positive reward” (I was delayed yesterday, sorry everyone, this article is a supplement to yesterday’s series of special lectures on moving equipment “Pump”, a summary of the knowledge learned every day, and will continue to be updated. http://bbs.hcbbs.com/thread-1256318-1-1.html Some people may think that it is a terrible thing to have nothing to do during the day at work, working like a handyman, not knowing what to do, not knowing what to study, day after day, year after year, unable to see your future! We must work hard from now on, even if we learn every day * A little bit of knowledge will add up to a lot, and enrich yourself. Now you have to clarify your goals. Only by enriching your brain first can you enrich others. . . . . . Just spend a few minutes a day and you will see the future! ! ! (Anyway, I have learned it. Whether you learn it or not is up to you, except for those who know how to do it, like Haichuan Dana. . . ) Without further ado, let’s start from the basics today~~! Let’s continue learning today * Pump structure, working conditions, characteristics! Water-cooled low-noise pump structure diagram 1. Product overview SG-type water-cooled low-noise centrifugal pump is a new generation product based on the direct-coupled pipeline pump and matched with the water-cooled motor developed by our company. It not only has the characteristics of smooth operation of SG type pipeline pump, simple structure, easy maintenance, small floor space, etc., but also has lower noise. The pump complies with the standards of GB/T5657-1994 "Technical Conditions for Centrifugal Pumps (Class III)". It is suitable for transporting clean water or other liquids with physical and chemical properties similar to clean water. 2. Product Features 1. High efficiency and energy saving: CFD computational fluid dynamics is used to analyze and calculate the relationship between pressure distribution and speed distribution in the pump, and optimize the flow channel design of the pump to ensure that the pump has an efficient hydraulic shape and improve the efficiency of the pump. 2. Low noise: Due to the use of water-cooled motors and the elimination of the fan blades at the top of the motor, the SG pump has 3 to 5% lower noise than ordinary pipeline pumps. 3. Self-cooling structure: The cooling water can not only cool the motor casing, but also the upper and lower bearings of the motor, which not only improves the working environment of the bearings, increases the life of the bearings, but also improves the efficiency of the motor due to sufficient cooling of the motor. 4. Maintenance-free structure: The water-cooled motor bearings adopt sealed bearings, which eliminates the worry of daily maintenance of the bearings. 5. Long service life: The shaft material is 2Cr13 martensitic stainless steel, which avoids concerns about shaft seal failure or the need to replace the shaft due to corrosion. 6. Reliable lifespan: The base part of the mechanical seal generally adopts a rubber bellows structure. The seal on the traditional mechanical seal's central shaft is changed from the line seal of the O-ring to the two-surface seal of the rubber part, which improves the sealing effect. 7. Outdoor use: High protection level, can be used outdoors. 3. Working conditions flow: 2～1400 m3/h head: 5～80 m medium temperature: ＜+80℃ ambient temperature: ≤+40℃ Horizontal Chemical Canned Pump Structural Diagram 1. Product Overview The IWP type pump is a horizontal chemical canned pump. It is mainly composed of a pump body, an impeller, a canned motor, etc. It adopts a new static sealing structure to ensure no leakage and ensure that the working environment is not polluted. Its performance complies with GB/T5657-94 "Centrifugal Pump Technical Conditions Class III" standard. Mainly used in corrosive media and media with special requirements such as petroleum, chemical industry, textile printing and dyeing, pharmaceuticals, food, metallurgy, power stations and atomic energy. 2. Product Features 1. High efficiency and energy saving: CFD computational fluid dynamics is used to analyze and calculate the relationship between pressure distribution and speed distribution in the pump, and optimize the flow channel design of the pump to ensure that the pump has an efficient hydraulic shape and improve the efficiency of the pump. 2. Static sealing structure: It adopts a new static sealing structure and undergoes strict sealing tests before leaving the factory to ensure that it is watertight and ensures that the working environment is not polluted. 3. Low noise: Adopting a quiet noise design method to reduce noise, the noise is 3 to 5% lower than that of ordinary pumps. 4. Materials: The parts in contact with the medium are made of high-quality stainless steel (different materials can be used according to different media), which are corrosion-resistant and have long service life. 5. Easy maintenance: Horizontal installation, rear door structure, convenient maintenance, simple daily maintenance 6. The whole machine has good performance: Adopting advanced double throttle ring balancing method, the axial force balance effect is good, effectively reducing the motor failure rate and improving operation reliability. ； The balance accuracy is high, and the dynamic balance accuracy of the rotor parts is G1.0. 7. New casting technology: The overflow pump components of the IWP pump (such as pump body, impeller, pump cover, sealing ring, etc.) are precision cast with silica melt, and the flow channel size is stable; after the casting is formed, a pickling process is used to remove residual attachments on the surface of the casting, retaining the essence of the metal, and will not affect the transported medium due to casting attachments. 3. Working conditions flow: 2～375 m3/h head: 12.5～80 m Pumping medium temperature -50～+95℃ Ambient temperature ≤+40℃ Maximum working pressure of the system ≤1.2Mpa Horizontal centrifugal pump structure diagram Single-stage single-suction horizontal centrifugal pump. The impeller is installed on the motor extension shaft. It has the characteristics of smooth operation, simple structure, easy maintenance and repair, convenient installation and space saving. The product complies with GB/T5657-1994 "Centrifugal Pump Technical Conditions (III) Category" Axial flow submersible pump structure diagram 1. Product overview ZQ and HQ series axial flow submersible pumps and mixed flow submersible pumps are mainly composed of pump body, impeller, submersible motor, etc. The motor and the pump head are coaxial and form a whole. The motor and the pump are separated by a mechanical seal. The cable inlet is sealed with an inlet seal, so that the entire motor is in a good sealing state and the whole machine runs submerged in water. There are leakage and temperature rise protection devices inside the whole machine, making the operation safe and reliable. The blades are adjustable, and the flow rate and head change range is large. The products comply with the JB/T10179-2000 "Mixed-flow and Axial-Flow Submersible Pumps" standard. It is widely used in farmland hydraulic facilities, urban flood control and water supply, light sewage discharge and water diversion projects. It is especially suitable for occasions where the flow rate and head change range is large. 2. Product Features 1. Professional and reliable: ZQ and HQ series pumps are specially designed for large flow and low head applications. This series of products is a combination of domestic and foreign advanced pump manufacturing technology and summed up through years of practice. It is the best replacement product for traditional axial flow pumps and mixed flow pumps. The motor and pump are combined into one, and the submersible unit has a series of advantages that traditional units cannot match. 2. Multi-channel detection, multi-channel protection: The oil and water probe and float switch can detect in real time, and can realize functions such as alarm, shutdown, and retention of fault signals, making the submersible motor safe and reliable. 3. Anti-torsion device: The reaction torque of the motor's starting torque at the moment the unit starts often causes the entire unit to rotate in the opposite direction. The anti-torque device with oriental characteristics can easily resolve this problem. 4. The cable is durable and waterproof: Oil-resistant heavy-duty rubber-sheathed cables are used, and the outlet adopts a special sealing structure to prevent leakage and ensure long-term reliability without condensation in the motor cavity. 5. Safe and reliable: Two or more sets of independent mechanical seals, with special friction pair materials arranged in series up and down, provide multiple protections, long service life, practicality and reliability. 6. Easy to install and save investment: The motor and pump are integrated into one, eliminating the need for complex and labor-intensive axis alignment installation procedures on site, making installation very convenient. ； Since the pump operates submersed in water, it can * * Simplifying the building structure of the pump station and reducing the installation area can save 30 to 40% of the total project cost of the pump station. 3. Working conditions flow: 670～28000m3/h head: 1.0～20m Medium temperature ≤+50℃ Ambient temperature ≤+40℃ Motor insulation level: Class F motor protection class: IPX8 clean water and light sewage AY centrifugal oil pump structure diagram 1. Product overview The AY type centrifugal oil pump is modified and designed based on the AY type centrifugal oil pump in accordance with the American Petroleum Industry Institute standard API610 8th edition. The product type, installation dimensions and performance parameters remain the same as the AY type centrifugal oil pump, which is conducive to the update and transformation of the device. In order to be suitable for operation under different working conditions, the pump body of this type of pump adopts central support method. ； The bearing body can be selected from three types: natural heat dissipation, air cooling and water cooling. ； There are three types of materials for flow-passing parts: cast iron (I), cast steel (II), and horse-shaped stainless steel (III). ； Pump structures include single-stage single-suction, two-stage single-suction, single-stage double-suction, multi-stage segments, etc. The product complies with GB3215-82 "KGT General Technical Conditions for Centrifugal Pumps for Chemical and Petrochemical Processes" and can be used to transport petroleum, chemical products and other media with a certain viscosity that do not contain solid particles and whose medium temperature is not greater than 450°C. 2. Product features 1. High standard requirements: The AY pump is remodeled and designed strictly in accordance with the latest 8th edition requirements of the American Petroleum Industry Institute API610, which is higher than the original API 610 6th edition standard. 2. High temperature resistant structure: The pump body adopts a central support structure to prevent stress concentration and deformation of the pump body caused by material creep at high temperatures. The support frame, pump cover, suspension and bearing parts are all equipped with cooling chambers. 3. Diaphragm coupling: It has small size, light weight, large carrying capacity, high transmission efficiency and high transmission accuracy. It is suitable for occasions with oil and water at high and low temperatures. The elongated structure ensures that the motor can be repaired without moving the motor or disassembling the pipeline. 4. Mechanical seal: Single-end mechanical seal, double-end mechanical seal, and metal bellows mechanical seal can be selected according to different working conditions, and the sealing is reliable. 5. Bearings: The bearing uses a single-row radial bearing paired with a two-row thrust bearing, with large bearing capacity. The design life is long (>25000 hours), and the lubrication method is thin oil lubrication. 6. Fully sealed shaft: The shaft is sealed with a gasket and "O" ring to ensure that the shaft does not come into contact with the medium and improve the life of the shaft. 7. High balance accuracy: The dynamic balance accuracy of the rotor components is G1.0. 3. Working conditions flow: 9m3/h～500 m3/h (clear water state) Lift: 38m～650 m (clear water state) Medium temperature: -45℃～+450℃ ambient temperature: ≤+Below 40℃ is the special lecture "Pump" of my special series of moving equipment. 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Please support, listen and discuss ； If you have any directions that need introduction, please contact me. If there are many requests, I will make a special post to explain~~! :) A series of special lectures on moving equipment "Pumps", a summary of the knowledge learned every day, and will be updated continuously. http://bbs.hcbbs.com/thread-1256318-1-1.html