Precautions for replacement of gaskets of plate heat exchangers_
847 In the process of repairing the plate heat exchanger, one of the faults often encountered is that the gasket of the plate heat exchanger needs to be replaced. As the saying goes, it is not difficult, and it is not difficult to replace the plate heat exchanger. This is also the case for the gaskets of the plate heat exchanger. As long as the correct steps are followed, it is not difficult to replace the gaskets of the plate heat exchanger, but if the operation is not correct, it may bring no small trouble to the normal use of the plate heat exchanger in the later stage. It is not a simple matter to replace the gasket of the plate heat exchanger. Usually, if the operation method is not appropriate, there will be problems such as plate heat exchanger leakage and liquid leakage. Here is a brief introduction to the lower plate heat exchanger. Precautions for gasket replacement. 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. According to different dirt, the acid-alkali cleaning tank is used for chemical cleaning, and the surface of the cleaned parts will not be corroded by the chemical medium.