Electric turning device for piston compressor

Abstract

The invention provides an electric turning device for a piston compressor. The electric turning device is compact in structure and safe and reliable, allows damage caused by overloading to be effectively avoided, is applicable to an explosion-proof area and allows higher overall safety for a unit. The electric turning device comprises a large turning gear, a turning motor and a base; the turning motor is supported on the base; the electric turning device is characterized in that the turning motor is an explosion-proof motor, the output end of the turning motor is connected with one end of an overrun clutch, the other end of the overrun clutch is connected with the input end of a worm-gear reducer supported on the base, an exposed output portion of the worm-gear reducer is specifically a sliding shaft, the front end of the exposed portion of the sliding shaft is connected with a small gear through flat keys in a sleeved manner, the small gear can slide axially along the flat keys, a stirring rod is arranged on one side of the small gear, and the inner end of the stirring rod drives the small gear to axially slide.

Description

technical field [0001] The invention relates to the structural technical field of piston compressors, in particular to an electric barring for piston compressors. Background technique [0002] Piston compressors for large-scale processes are widely used in petrochemical, oil refining, and chemical industries. This kind of large compressor is usually the key equipment in the whole device, which has strict requirements on safety and reliability. These compressor units need to make the compressor run at a very slow speed during installation and commissioning, overhaul, shutdown and start-up, which is called cranking. During the installation and maintenance process, it is often necessary to turn the unit to a specific position by cranking to facilitate inspection and assembly and disassembly of specific parts; Make the unit realize pre-lubrication before operation. During the shutdown period of the unit, it is also necessary to crank regularly to ensure that the unit can be p...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the piston compressor units used in large-scale technological processes at home and abroad are arranged between the compressor and the main motor, and the space in this part is not large. Barring gear, but the axial dimension of this gear is too long, so it is difficult to arrange; there is also a gear using a vertical reducer, this gear has a small footprint, but its height is high, which brings operational problems. Inconvenient, the design of the flywheel guard is difficult; there are also motors and reducers that are directly connected through couplings. Once overloaded, the motor will be burned or the coupling will be damaged.

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