For the new heat exchanger chipset, should be used minimum allowable stress to connect. Depending on the number of each group of heat exchanger tablets to adjust the tightening force of the heat exchanger. Each tighten the nut inside 3mm, always paid attention to the stress situation of the flap. Moreover, only allows for heat exchanger without work pressure, adjustment to tighten force at room temperature. Plate heat exchangers for the nameplate did not give a stress adjustment range, generally given stress value in the parts diagram, when tighten heat exchanger, the tightening torque in any case should not be less than the provisions of drawings value.
The following factors have an important impact on the life of the elastic gasket:
1. Natural aging. The elastic gasket soften is related to with the pressure and temperature. After the sealing pad loses its elasticity, the heat exchanger will leakage. In some heat exchangers, in order to solve the gasket aging, it allow adjust the sealing performance of the heat exchanger to solve leakage.
2. Due to great and uneven pressure make the elastic gasket stress large.
3. The maximum working pressure and operating temperature.
4. Corrosive of cooling medium and cleaning agents.
5. The work of the heat exchanger. The service life of elastic gasket has an important effect to heat exchanger. If these sealed thermal hardening and lost their original flexibility, it can lead to the heat exchanger does not work.
