Plate heat exchanger seal failure

Date:2017-12-18

   Plate heat exchanger leak at rated operating pressure, in addition to equipment manufacturing factors, mainly with the rapid changes in system pressure and temperature. The instantaneous pressure drop caused by an impact is often 2 to 3 times higher than normal pressure, displacing the installed rubber seal, resulting in failure of the seal. When the temperature changes too fast, the gasket does not match the seal preload and elasticity, resulting in equipment pressure capacity lower than the rated design pressure and leakage.
   Precautions:
   1 operation to avoid the system impact phenomenon.
   2. Depending on the operating pressure to improve the design pressure of the device 1.5-2.0 times.
   3. Take other measures to compensate for changes in seal preload.
   4. In operation, heating and boosting should be slowed down as much as possible.

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