A packing sealing mechanism for a reciprocating compressor

Abstract

A stuffing sealing mechanism of a reciprocating compressor includes a stuffing sealing ring and a decompression ring, and a first labyrinth sealing ring is arranged at one end of the decompression ring. A second labyrinth seal ring is provided at one end of the packing seal ring, a slot is provided inside the second labyrinth seal ring, an air intake sleeve is communicated with the cylinder body of the compressor, and the first booster sleeve is communicated with one end of the air intake sleeve. The inner diameter of the first pressurized sleeve is larger than the inner diameter of the intake sleeve, a first partition is provided between the intake sleeve and the pressurized sleeve, a first piston is provided in the intake sleeve, and a second piston is provided in the first pressurized sleeve , the first piston and the second piston are connected through the first plug rod, and there is a first spring outside the first plug rod. One end communicates with the slot through the first air pipe, and the first one-way valve communicates with the first pressurized sleeve and the first air pipe. The invention can automatically adjust the seal according to the working conditions of the compressor, reduce the pressure of the packing seal, and prolong the service life of the packing seal.

Description

Technical field [0001] The present invention relates to a reciprocating compressor packing sealing mechanism. Background [0002] Reciprocating piston compressor with the change of working conditions, the pressure in the compressor also changes, its sealing packing bearing pressure varies between 10MPa ~ 35MPa, the existing packing sealing strength according to 40MPa, that is to say, no matter how the compressor pressure changes, its packing sealing strength is always 40MPa, then after the compressor is used for a period of time, the sealing packing wears, so that its sealing capacity decreases, and the packing seal service life is shorter. Contents of the Invention [0003] The technical problem to be solved by the present invention is to provide a reciprocating compressor packing sealing mechanism, which can automatically adjust the sealing according to the compressor working conditions, reduce the packing sealing pressure, and extend the service life of the packing seal. [0...

AI Technical Summary

Problems solved by technology

[0002] As the working conditions of the reciprocating piston compressor change, the internal pressure of the compressor also changes. The bearing pressure of the sealing packing varies between 10MPa and 35MPa. The existing packing sealing strength is 40MPa, that is to say, no matter how the compressor pressure changes , the packing sealing strength is always 40MPa, then after the compressor has been used for a period of time, the sealing packing wears out, reducing its sealing ability and shortening the service life of the packing seal

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