Right-angle lock-type compressor piston ring

Abstract

The invention discloses a right-angle lock-type compressor piston ring and belongs to the technical field of piston rings. In order to improve the piston ring connecting stability and achieve the relatively good sealing property, a combined compressor piston ring, namely the right-angle lock-type compressor piston ring, is provided. The right-angle lock-type compressor piston ring comprises a mainpiston ring body and an inner auxiliary piston ring body which are utilized in a combined manner and have the equal height, wherein a positioning bulge is arranged on the inner side wall of the mainpiston ring body; the concave of the positioning bulge has a short upper edge and a long lower edge; a first groove-shaped structure is arranged on one side surface of the positioning bulge; a secondgroove is formed in the lower edge of the positioning bulge; a convex edge bulge is arranged at the outer end of the second groove; a second groove-shaped structure corresponding to the first groove-shaped structure is arranged on the outer side wall of the inner auxiliary piston ring body; a bulge structure matched with the second groove is arranged on the lower edge of the second groove-shaped structure; a clamping groove matched with the edge bulge is formed in one end of the bulge structure; and a locking strip is mounted in the space defined by the first groove-shaped structure and the second groove-shaped structure.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a piston ring structure in a compressor. Background technique [0002] In a reciprocating compressor, a piston ring is usually installed on the piston, and the piston ring is used to seal the gap between the piston and the mirror surface of the cylinder, which mainly plays a sealing role. The existing piston ring mainly has two problems of fast wear and poor sealing performance. [0003] The problem of excessive wear of the piston ring is determined to a certain extent by the improper selection of the piston ring. For the same metal material for grinding, different media have different wear factors for the same formula of filled PTFE rings. ; For the same medium, different grinding metal materials have different wear factors for the same formulation of filled PTFE rings. [0004] Regarding the sealing of the piston ring, if the outer edge of the piston ring is to closely fi...

AI Technical Summary

Problems solved by technology

[0004] Regarding the sealing of the piston ring, if the outer edge of the piston ring is to closely fit the cylinder mirror surface, the piston ring must obtain a certain effective elasticity, so the piston ring must be made with a cut; if the piston ring does not have a cut, it cannot obtain the initial Elasticity, the piston ring does not necessarily stick to the mirror surface of the cylinder. When the compressor compresses the gas, the high-pressure gas may leak from the gap between the piston ring and the cylinder.

When the piston ring with notch is working normally, due to the notch of the piston ring, the gap at the notch of the piston ring will become larger and larger during long-term use, which will affect the airtightness of the compressor.

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