How to deal with the leakage of refrigerant in the battery test box

　　【】The battery test box is cooled by an air-cooled compressor. Its working principle is the same as that of air-conditioning. In the cooling process, a refrigerant is used for cooling. Once the refrigerant leaks, the test box will stop.

　　To eliminate the fault s*, you first need to understand the working principle of the fault. The compressor of the battery test box sucks in low-temperature and low-pressure refrigerant gas from the suction pipe, and then drives the piston to compress it through the operation of the motor. The high temperature and high pressure refrigerant gas is discharged to the exhaust pipe to provide power for the refrigeration cycle, thereby realizing the refrigeration cycle of compression, condensation, expansion and evaporation (heat absorption). What to do if the refrigerant leaks?

　　The first method:

　　 The core component of the refrigeration system of the battery test box equipment is the compressor. s*First we should check the equipment for leaks, using a leak detector and soap Use the water-combination method to check where the leak is. If it is found that the stem of the hot gas bypass solenoid valve is cracked or cracked, replace the solenoid valve. If there is a leak in other places, use oxygen welding to repair the leak. After the welding is complete, refill the system with fluorine, and the system operation can return to normal.

　　The second method:

　　 If it is a cascade refrigeration, you can observe the pressure gauge on the back of the battery test box to see if the pressure is within the normal range, and if it is lower than the normal value , It means that the refrigerant is leaking. Leak detection should be performed on the refrigeration system of the battery test box. High pressure nitrogen is input into the copper pipe. The leak detector and soapy water are used to check the leak. Usually there is only one leak. , Sometimes there are many missing points, which are relatively rare. After finding the leak, use oxygen welding to weld and seal the leak, and then fill the refrigeration system with nitrogen, and hold the pressure for 48 hours. During the pressure holding process, it is found that the pointer of the pressure gauge has not changed, indicating that the leak has been repaired and welded normally, and the nitrogen is released. Fill the system with environmentally friendly refrigerants R404 and R23, and the refrigeration system can resume normal operation.

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