Study of the Pressure Distribution between the Piston Rings in Reciprocating Compressors

Abstract:

Piston ring is one of the most important sealing components that can be easily damaged in reciprocating compressors. The severe non-uniformity of the pressure distribution was suggested to be the essential reason for the premature failure of the piston rings. Therefore, a test rig was set up to measure the pressure distributions as well as the build-up of the dynamic pressure difference, which could reveal the root cause for the non-uniformity of the pressure distributions. The results showed that the build-ups of the pressure differences between different rings were not simultaneous; there existed a threshold pressure, and the latter ring could work only when the pressure before the former ring reached to the threshold value. The pressure distributions were also investigated at the start-up and shut-down of the compressor, which further validated the cause of the premature failure of the first ring.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 6048-6052
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.6048
• Online since: November 2011
• Authors: Dian Bo Xin, Jian Mei Feng, Yan Jing Xu, Xue Yuan Peng
• Keywords: Piston Ring, Pressure Difference, Pressure Distribution, Reciprocating Compressor

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