Low temperature damage resisting device of propylene refrigeration compressor

Abstract

The invention discloses a low temperature damage resisting device of a propylene refrigeration compressor. The structure of the low temperature damage resisting device of the propylene refrigeration compressor comprises an oil return pipe, an oil inlet pipeline, a static vortex plate, an exhaust cavity, a gas valve, an exhaust opening, a control valve, a constant temperature gasification structure, a backpressure cavity, a bearing seat, a motor, a lubricating oil pool, a shell, a dynamic vortex plate and an oil return pipeline. The lubricating oil pool is arranged at the bottom end in the shell. The motor is installed over the lubricating oil pool. The bearing seat is installed at the top end of the motor. The dynamic vortex plate is installed over the bearing seat. According to the low temperature damage resisting device of the propylene refrigeration compressor, by means of separated design of a uniform-temperature drum and a heating device, heat-isolating preheating is achieved, itis avoided that direct contact between the heating device and the oil return pipe causes inconsistency of local temperature, and a continuous stable heat preservation effect on the oil return pipe isachieved; and a water bag is heated through air conduction to keep continuous and stable temperature, and the situations that propylene liquid generates flashing to cause generation of water, then gas-oil separation is difficult in a later period, so that the viscosity of the lubricating oil is lowered, and the operation efficiency of the compressor is lowered are avoided.

Description

technical field [0001] The invention relates to the field of compressors, in particular to low-temperature damage prevention equipment for propylene refrigeration compressors. Background technique [0002] The propylene refrigeration compressor adopts a two-stage twin-screw oil-injected compressor. Generally, the system is in a nitrogen environment of 0.1MPa-0.4MPag before starting up to prevent too much propylene from entering the system and causing low temperature. After starting up, add high pressure to the system Also too propylene, using liquid propylene to flash Chen Sheng's gas-phase propylene to drive. This method can effectively avoid the possibility of low temperature in the system. The application number is CN202010059183.X, a patent for a propylene refrigeration compressor to prevent low-temperature damage equipment. The method of directly starting the refrigeration compressor by transporting gas-phase propylene outside the system solves the problem. The dischar...

AI Technical Summary

Problems solved by technology

This method can effectively avoid the possibility of low temperature in the system. The application number is CN202010059183.X, a patent for a propylene refrigeration compressor to prevent low-temperature damage equipment. The method of directly starting the refrigeration compressor by transporting gas-phase propylene outside the system solves the problem. The discharge of propylene gas and the freezing of a small amount of water in the system, but after the operation of the compressor, the returning propylene liquid is likely to cause blockage at the inlet of the compressor due to low temperature, resulting in excessive internal pressure of the compressor and excessive engagement of the turntable stuck problem

Images