How to solve the problem of aging of the rubber pad of the plate heat exchanger? _
847 plate heat exchanger rubber pad is a relatively important part of the heat exchanger. A simple small accessory is quite important. Then the problem is coming, if you encounter the aging of the plate heat exchanger rubber pad How to solve the problem? The temporary treatment method of the aging of the rubber pad of the plate heat exchanger, let us focus on this aspect below. Temporary treatment method for the aging of the rubber gasket of the plate heat exchanger: The softening of the elastic gasket is related to pressure and temperature. When the rubber gasket/seal 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 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. Precautions for replacing the gaskets of plate heat exchangers It is not a simple matter to replace the gaskets of plate heat exchangers. Usually, if the operation method is proper, problems such as plate heat exchanger leakage and liquid leakage will occur. Today The editor will briefly introduce to you the precautions for the replacement of heat exchanger gaskets. Each heat exchanger plate is coated with a fluorescent test agent. Check for small cracks and corrosion holes under the irradiation of ultraviolet light. And clean it again. In addition. Also focus on checking the condition of the seal groove. Trim if necessary. Check the bonding position and bonding quality of each plate heat sink. Classified according to the order of installation. Then carefully assemble the plate heat sink group. After the plate heat exchanger is chemically cleaned. Use a high-pressure blowing device to remove the chemical medium remaining on the surface of the plate heat exchanger. Reuse performance inspection and testing. When rust is suspected, check the wall thickness of the heat exchanger and pipes. Remove the aging seals on the plate heat exchanger. Depending on the dirt. Use acid-alkali cleaning tank for chemical cleaning. The surface of the cleaned parts will not be corroded by chemical media. 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 plate heat exchanger rubber pad can be stored for about 3 years in a transparent plastic package.