Production process flow of plate heat exchanger.
Production process of plate heat exchanger: 1. Production process of plate heat exchanger: 1) Blanking: cut the steel plate according to the required size and shape; 2) Punching: Punch the required holes on the steel plate; 3) Bending: bend the steel plate into sheets according to the design requirements; 4) Welding: the plates shall be welded according to the design requirements; 5) Assembly: assemble plates into heat exchangers; 6) Cleaning: clean the assembled heat exchanger; 7) Inspection: inspect the heat exchanger; 8) Packaging: package the qualified heat exchanger. 2. Classification of plate heat exchanger: according to its structure and use, plate heat exchanger can be divided into: 1) tubular heat exchanger: used for heat exchange between liquids, with simple structure, high heat exchange efficiency, long service life and other characteristics; 2) Plate heat exchanger: It is used for heat exchange between liquids, and is characterized by large heat exchange area, high heat exchange efficiency, compact structure, etc; 3) Spiral plate heat exchanger: used for heat exchange between liquids, it has the characteristics of large heat exchange area, high heat exchange efficiency, compact structure, etc. 3. Application of plate heat exchanger: plate heat exchanger has a wide range of applications in industrial production, such as: 1) in chemical production, it is used for cooling, heating, evaporation, condensation and other operations; 2) In food processing, it is used for heat exchange, sterilization, disinfection and other operations; 3) In the air conditioning system, it is used for refrigeration, heating, dehumidification and other operations; 4) In the heating system, it is used for heating, cooling, hot water supply and other operations; 5) In the power system, it is used for generator cooling, transformer cooling and other operations; 6) In the water treatment system, it is used for cooling, heating, sterilization, disinfection and other operations. 4. Advantages of plate heat exchanger: plate heat exchanger has the following advantages: 1) heat exchange
Precautions for operation of plate heat exchanger.
1. The pipeline system of plate heat exchanger shall be checked before operation, and the operation can be carried out after confirmation. 2. When the heat exchanger is working, slowly open the inlet valve of hot fluid first, and then slowly open the outlet valve of hot fluid to fill the heat exchanger with hot fluid, and check whether there is leakage at each connection port. 3. Check the pressure difference between cold and hot fluids. If the pressure difference is large, adjust the pressure reducing valve first to keep the pressure difference within the allowable range. 4. Check the pressure drop of the heat exchanger. If the pressure drop is too large, check the sealing condition of the heat exchanger. If the sealing condition is good, check the heat transfer condition of the heat exchanger. If the heat transfer condition is good, check whether the heat exchange area of the heat exchanger is sufficient. 5. Before the heat exchanger stops working, close the hot fluid outlet valve first, and then close the hot fluid inlet valve. 6. After the heat exchanger stops working, the residual medium inside the heat exchanger shall be completely discharged. 7. During the use of the heat exchanger, the sealing and heat transfer conditions of the heat exchanger shall be checked regularly to ensure the normal operation of the heat exchanger. Please briefly describe how to use plate heat exchanger for heat exchange. Plate heat exchanger uses fluid flow between plates to realize heat exchange. In plate heat exchanger, cold fluid and hot fluid flow alternately through a group of parallel plates, and the gap between plates is very small, which can effectively improve the heat transfer efficiency. When cold fluid and hot fluid flow through the plate, heat is transferred from the hot fluid to the cold fluid, thus realizing heat exchange. The efficiency of heat exchange depends on the design of plate heat exchanger, the distance between plates and the thermal conductivity of plate material. Therefore, when using plate heat exchanger for heat exchange, it is necessary to select the appropriate type and parameters of plate heat exchanger according to the actual application requirements and heat exchange conditions. in use
Inspection of plate heat exchanger before delivery.
1. Check whether the plates are damaged, deformed and cracked. The damaged, deformed and cracked plates shall not be used and shall be replaced. 2. Check whether the plate sealing gasket is aged, damaged or cracked, and replace it if any. 3. Check whether there is any foreign matter on the plate. If there is any foreign matter, it should be removed. 4. Check whether the corrugated shape, corrugated depth, dimensional accuracy, etc. of the plate meet the requirements, and those that do not meet the requirements shall not be used. 5. Check the flatness of the plate, which shall meet the requirements, otherwise it shall be polished. 6. Check whether flatness, ripple depth, ripple shape, etc. of plates meet design requirements. 7. Check the dimensional accuracy of plates. The dimensional accuracy should meet the design requirements, otherwise it should be corrected. 8. Check whether the corrugated shape, corrugated depth and dimensional accuracy of the plate meet the design requirements, and repair or replace the plate that does not meet the design requirements. 9. Check whether the plate is damaged, deformed, cracked, foreign matters, etc. If so, repair or replace it. 10. Check whether the flatness of the plate meets the design requirements. The flatness shall meet the design requirements. 11. Check whether the dimensional accuracy of plates meets the design requirements, and the dimensional accuracy shall meet the design requirements. 12. Check whether the corrugated shape, corrugated depth, flatness and dimensional accuracy of the plate meet the design requirements. 13. Check whether the plates are damaged, deformed, cracked, foreign matters, etc. If any, repair or replace them. 14. Check whether the ripple depth, flatness and dimensional accuracy of the plate meet the design requirements, and repair or replace the plate that does not meet the requirements. 15. Check whether the flatness, ripple depth, dimensional accuracy, ripple shape, etc. of the plates meet the design requirements, and repair or replace the plates that do not meet the requirements. 16. Check plate
Preparation before use of plate heat exchanger.
Before use, check the integrity of all parts of the plate heat exchanger, check whether all fastening bolts are loose and damaged, check whether the nozzle is damaged, and check whether the sealing gasket is intact. Before use, the plate heat exchanger shall be checked for leakage by filling water. Before use, the plate heat exchanger shall be tested for normal operation and abnormal noise. Before use, the plate heat exchanger shall be preheated to reach the operating temperature before being put into operation. Before use, the plate heat exchanger shall be cleaned to ensure that its interior is clean and free of impurities. Before use, the plate heat exchanger shall be maintained to ensure its stable, safe and reliable operation. The above is the preparation before using the plate heat exchanger, and I hope it will be helpful to everyone. How to protect plate heat exchanger from corrosion? Plate heat exchangers are prone to corrosion during operation, leading to problems such as lower heat exchange efficiency and shorter service life. In order to prevent corrosion of plate heat exchanger, the following measures can be taken for protection: 1. Material selection: select materials with good corrosion resistance to make plate heat exchanger, such as stainless steel, titanium alloy and other corrosion resistant materials, which can effectively extend the service life of equipment. 2. Anticorrosive coating: Anticorrosive coating is applied on the surface of plate heat exchanger, which can effectively prevent corrosive medium from contacting metal and protect metal surface from corrosion. 3. System design: reasonably design the system to prevent corrosive media from directly contacting the surface of plate heat exchanger. For example, isolation measures and buffer zones can reduce the corrosion of corrosive media on equipment. 4. Cleaning and maintenance: regularly clean and maintain the plate heat exchanger, remove the accumulated corrosive substances and dirt, and keep the equipment surface clean, which can effectively prevent corrosion. 5. Control of corrosive media: during system design and operation,
