The aging treatment method of plate heat exchanger gasket
The resilience of the heat exchanger gasket is related to pressure and temperature. When the heat exchanger gasket loses its elasticity, the plate heat exchanger will leak. In some products, in order to solve the dripping phenomenon caused by the aging of the heat exchanger gasket, it is allowed to adjust the sealing performance of the plate heat exchanger, that is, tighten the bolts of the combined plate heat exchanger again to adjust the plates of each heat exchanger The pressing force between the heat exchanger gaskets solves the problem of dripping and leakage.
The aging treatment method of plate heat exchanger gasket
On the nameplate of the heat exchanger with this function, the plate heat exchanger manufacturers generally give the allowable large and small stress. For the new heat exchange plate group, a small allowable stress should be used for connection and fixation. Depending on the number of heat exchanger plates in each group, the tightening force of the plate heat exchanger bolts can be adjusted one or more times. When tightening each time, the nut can be screwed in by 3mm, and always pay attention to adjusting the heat exchanger plate during the tightening process. The stress of the fins and the heat exchanger gasket, and only allow the heat exchanger without working pressure to adjust the tightening force under normal temperature conditions to prevent dripping.
After chemical cleaning, use a high-pressure blowing device to thoroughly remove the chemical medium remaining on the surface of the plate heat exchanger plates, heat exchanger gaskets, etc. Each heat exchanger plate is coated with a fluorescent test agent, and then exposed to ultraviolet light. Next, check for small cracks and corrosion holes, and clean them again. It is also important to check the condition of the sealing groove, and trim if necessary.
