Why does the heat exchanger unit leak liquid?

Plate heat exchanger is a heating equipment used in many families. Sometimes the heat exchanger unit will string liquid. Then what is the reason for this? Let the heat exchanger unit take us a look.

1. Disassemble the plate heat exchanger unit, remove the dirt on the plate surface, wipe it dry and reassemble the heat exchanger. Conduct a hydrostatic test with a pressure of 0.2 ~ 0.3MPa on one side. Stop the test after the water flows out from the other side, open the heat exchanger and carefully observe the non pressure test side of the plate. The wet plate is the plate with holes or cracks.

2. Light transmission and coloring inspection methods can also be used on site to find out the waste plates. All the inspected waste plates and gaskets shall be replaced and used after reassembly.

3. The plates of the plate heat exchange unit are misaligned. For the plate heat exchange unit with large changes in medium flow and pressure, multi pass combination and long-term use, it is easy to have plate misalignment. After plate misalignment, sometimes there is leakage soon; Although some leakage does not occur immediately, it is a hidden danger of leakage, so they must be handled in time. The main causes of dislocation are: deformation of heat exchanger plates; The sealing gasket of the plate heat exchange unit slides away from the gasket groove. To deal with this dislocation, the deformed plate and the gasket sliding away from the gasket groove should be replaced in time.

4. In case of lack of maintenance equipment on site, the plate heat exchange unit needs to be replaced in time during use, whether the plate is deformed, cracked, perforated, or the gasket is aged and broken. In case there are not enough spare parts on site, and the heat exchange equipment has neither spare parts nor shutdown, Simple on-site treatment shall be carried out. The simple on-site treatment method is to extract the damaged plates and leaking plates in pairs. If the number is not too large, the number of reduced flow channels is not too large, and it will continue to be used after assembly, which will not have a great impact on production.