Description of the temporary treatment method for the aging of the plate heat exchanger gasket_
Temporary treatment method for the aging of the gasket of 898 plate heat exchanger: The softening of the elastic gasket is related to pressure and temperature. When the gasket loses elasticity, the plate heat exchanger will leak. In some products, in order to solve the dripping phenomenon caused by the aging of the sealing gasket, it is allowed to adjust the sealing performance of the heat exchanger, that is, tighten the bolts of the combined plate heat exchanger again to adjust the elastic sealing gasket between each heat exchanger The pressing force can solve the dripping problem. On the nameplate of the plate heat exchanger with this function, the allowable large and small stresses are generally given. For new plate heat exchanger fins, small allowable stress should be used for connection and fixation. Depending on the number of plates in each group of plate heat exchangers, the tightening force of the plate heat exchanger can be adjusted one or more times. When tightening, the nut can be screwed in by 3mm, and always pay attention to the stress of the adjusting plate during the tightening process. And, it is only allowed to adjust the tightening force at room temperature for heat exchangers without working pressure to prevent dripping. For plate heat exchangers that do not give the stress adjustment range on the nameplate, the stress value is generally given in the parts drawing. When tightening this type of plate heat exchanger, the tightening torque should not be lower than the value specified in the drawing in any case. Because it is related to the assembly quality and assembly deformation of the plate heat exchanger. When the tightening torque reaches the required value, the elastic gasket can be replaced in a planned way. For plate heat exchangers used in important production equipment and corrosive media, it is recommended to have a set of spare seals. When the warehouse temperature is 18℃, the gasket of the plate heat exchanger can be stored for about 3 years in the transparent plastic packaging.