1. leakage

① Assembly misalignment due to deformation of the plate. 

② There is a crack in the sealing groove of the plate. 

③ The clamping bolts are loose or the clamping dimensions are uneven. 

④ The heat exchanger gasket is aging, the main sealing surface is dirty, and some of the gasket is out of the sealing groove.

 2. Straight liquid

① There is a slight leak at the leaking groove. 

②The residual stress after cold stamping of the sheet and the too small clamping dimension in the assembly cause stress corrosion. 

③ Operating conditions do not match the design requirements. 

④ improper selection of the board causes the sheet to be corroded and cracked.

 3. The pressure drop is too large

① After the heat exchanger is operated for a period of time, if it is not cleaned, the surface of the sheet will be fouled and the pressure drop will be too large. 

② When the plate heat exchanger is selected for the first time, the area is too small, causing the flow velocity between the plates to be too high and the pressure drop to be large. 

③The cleaning of the running system pipeline is not standardized, resulting in many dirt entering

The inside of the heat exchanger causes excessive pressure drop.