Evaluating Compressor Reliability.rev1 Beta （评估压缩机可靠性。）.pdfVIP

http:/www.BetaM Evaluating Compressor Reliability – An Operator’s Perspective of Assessing Vibration Risk Across the Operating Envelope By Jeff Dowdell Chris Harper Manager of Facility Planning Senior Engineer Dominion Transmission Beta Machinery Analysis Presented at Gas Machinery Conference 2011 October 2 – 5, 2011 Nashville, TN 1. ABSTRACT Dominion Transmission, Inc., like other operators of gas compressors, is focused on identifying and mitigating reliability risks associated with their assets. This is especially challenging for reciprocating compressors which must operate across a range of suction and discharge pressures, unloading schemes, and flow conditions. Often 50 to 300 conditions are assessed to properly understand pulsation, vibration, and performance issues. The resulting data can be overwhelming and difficult to interpret. This presentation will provide a Customer’s perspective to assessing reliability risks. Using results from recent Dominion compressor projects, the authors will illustrate how vibration and performance risks are often hidden and lurking in the background, but will become a reliability problem at some point in the future. This case study will also offer ideas for improving the assessment process. 2. INTRODUCTION Operating flexibility is one of the benefits of single- and multi-stage reciprocating gas compressors. With increased operating flexibility comes increased risk of reliability problems. Some of this reliability risk can be reduced at the plan