The reasons for the high temperature of the compressor discharge are

The reasons for the high temperature of the compressor discharge are (1) The clearance in the compressor cylinder is too large; (2) The suction and exhaust valves and piston ring of the compressor are damaged; (3) The compressor safety bypass valve leaks; (4) The suction temperature of the compressor is too high; (5) The lubricant in the compressor cylinder is interrupted; (6) The suction pressure of the compressor is too low or the suction valve is too small; (7) The suction pipe or filter of the compressor is blocked, and the heat insulation layer is damaged; (8) The resistance in the compressor return air pipeline is too large, and the gas flow rate is slow to easily cause overheating, which causes the exhaust temperature to increase; (9) The condensing pressure is too high; there is grease or scale in the condenser; (10) The water volume of the cooling water jacket of the compressor cylinder head is insufficient; or the temperature of the cooling water is too high; (11) The cooling capacity of the compressor is less than the capacity of the warehouse equipment, such as the evaporation area is too large; (12) The resistance in the exhaust pipe of the compressor is too large; (13) The throttle valve is too open or blocked; (14) The efficiency of the compressor itself is poor; (15)The installation height of ammonia separator is too low After the above analysis, the (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) and other articles were excluded according to the site conditions, only the (5), the operator Not checked. After checking the crankshaft, it was found that the crankshaft was an old crankshaft that was originally repaired. As a result, the position where the shaft was held was worn out and repaired by the accumulation method. It was used for three months before the accident. At the site, it was found that the accumulation layer at the original repair location had fallen off, and the falling objects blocked the oil holes on the bearing bush, which caused the lack of lubrication in the piston part. , Thus causing such great damage. What is even more terrible is that the operators of the team do not have the operation qualification certificate of refrigeration equipment. Solution: In addition to the motor, replace the entire compressor. Through this accident, we should draw a good lesson. In future work, we must strictly implement the system of operating personnel with certificates. While strengthening management, companies should seriously implement the planned maintenance system for equipment and the operation management system of equipment to make the accident The prevention of the occurrence and the future.

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