Stuffing assembly of reciprocating piston compressor

Abstract

The invention relates to a stuffing assembly of a reciprocating piston compressor, comprising N groups of stuffing sequentially connected from inside to outside and a flange, wherein N is not less than 7 and not more than 12; every group of stuffing comprises a stuffing box and a stuffing ring, the stuffing box is provided with a circle step cavity along axial direction inside, and the stuffing ring is arranged outside the step cavity; the flange and the stuffing box of the outermost group of stuffing abutting to the flange are axially provided with nitrogen channels, nitrogen inlets of the nitrogen channels are positioned on the outer lateral face of the flange and nitrogen outlets are positioned in the inner side of the step cavity in the stuffing box; the flange, the stuffing box of a second group of stuffing counted from outside to inside and the stuffing box of the outermost group of stuffing abutting to the flange are axially provided with recovering channels for leaked nitrogen, leaked nitrogen inlets of the recovering channels are arranged at the inner side of the step cavity in the second group of stuffing box and leaked nitrogen outlets are arranged on the outer lateral face of the flange; the flange and the corresponding stuffing box of each group of stuffing between a third group of stuffing or a fourth group of stuffing counted from inside to outside and the outermost group of stuffing are axially provided with sealing nitrogen channels, nitrogen inlets of the sealing nitrogen channels are arranged on the outer lateral face of the flange and sealing nitrogen outlets are arranged in the inner side of the corresponding step cavity of the third group or the fourth group of stuffing box. The stuffing component has better sealing performance.

Description

technical field [0001] The invention relates to an accessory of a reciprocating piston compressor, in particular to a packing assembly of a reciprocating piston compressor which has better sealing performance and can effectively prevent raw material gas from leaking out. Background technique [0002] At present, reciprocating piston compressors are often used to compress toxic, harmful, flammable, explosive, rare and precious medium gases (commonly known as raw material gases). Matching packing assembly for sealing. [0003] The arrangement direction of each row of compression system in the compressor can be vertical direction, horizontal direction or inclined direction, and each row of compression system includes crosshead slideway, middle body, connecting body (internal packing assembly), cylinder and corresponding connecting rod, The orientation of the crosshead, piston rod, piston and packing assembly is determined by the configuration direction of the corresponding col...

AI Technical Summary

Problems solved by technology

[0007] Although the packing assembly can play a certain role in gas sealing, a small amount of raw gas will inevitably leak out of the cylinder along the piston rod, causing waste of raw gas and air pollution; especially some raw gas (such as nickel carbonyl Gas) leakage, along with the pressure and temperature changes of the leaked raw material gas, will produce irregular coatings on the piston rod, destroying the precision of the piston rod, causing the packing component to fail, and the compressor can only be forced to stop. Seriously affect the economic benefits of the user unit, and at the same time, cause the workplace to be polluted by the raw material gas or the toxic gas produced after its decomposition, seriously threatening the personal safety and physical and mental health of the operators

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