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What are the reasons for the failure of gasketed plate and frame heat exchanger

What are the reasons for the failure of gasketed plate and frame heat exchanger

(Summary description)The gaskets of gasketed plate and frame heat exchangers are often damaged during use. Then, what are the reasons for the failure of gaskets of gasketed plate and frame heat exchangers?

What are the reasons for the failure of gasketed plate and frame heat exchanger

(Summary description)The gaskets of gasketed plate and frame heat exchangers are often damaged during use. Then, what are the reasons for the failure of gaskets of gasketed plate and frame heat exchangers?

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The gaskets of gasketed plate and frame heat exchangers are often damaged during use. Then, what are the reasons for the failure of gaskets of gasketed plate and frame heat exchangers?

gaskets of gasketed plate and frame heat exchanger

1. Pressure influence: Leakage occurs when the gasketed plate and frame heat exchanger can be disassembled and used in the rated working pressure. In addition to the quality factors of the device in the manufacturing and assembly, it is generally related to the abnormal impact load in the system. This is a situation that is not easy for ordinary operators to check. The instantaneous pressure peak caused by the impact is often about 2 times higher than the normal working pressure, which displaces the rubber gasket installed in the plate heat exchanger, making the sealed plate and frame heat exchanger Sealing failure, because the heat transfer element of this type of device is made of stainless steel sheet, its sealing rigidity is relatively poor, and the sealing periphery is very long, so the impact resistance performance is lower than that of the shell-and-tube heat exchanger.
 
2. Time influence: For equipment used or idle for several years, the self-aging of the sealing material may affect the reliability of the sealing, so the maintenance opportunity should be used to replace the new sealing gasket in time.
 
3. Temperature influence: Rapid changes in temperature can also cause sealed plate and frame heat exchanger seal failure. When the temperature changes rapidly, the linear expansion coefficient and elastic deformation of the rubber gasket and the sealing pre-tightening force will not match. As a result, the pre-tightening force of the seal is reduced, resulting in a pressure bearing capacity of the device much lower than the rated design pressure.

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Time of issue:2020-02-11 00:00:00

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