Common faults and cleaning of plate heat exchanger

1, large pressure drop

Medium inlet and outlet pressure drop more than design requirements, and even higher than the design value of many times, seriously affecting the system on the flow and temperature requirements. In the heating system, if the hot side pressure drop is too large, then the primary side of the flow will be a serious shortage, that is, the heat source is not enough, leading to two times out of the temperature can not meet the requirements.

2, string liquid

The main characteristic is that the medium of the high pressure side enters into the medium with lower pressure. If the medium is corrosive, it may lead to corrosion of other equipment in the pipeline. The fluid usually occurs in the diversion area or the two sealing area.

3, external leakage

The main manifestations of leakage (small amount, water droplets discontinuous) and leakage (large volume, continuous water droplets). The main parts of the external leakage are the sealing place between the plate and the plate, the two sealing leakage grooves of the plate and the inner side of the end plate and the pressing plate.