气动系统用离心式压缩机失速与喘振故障的诊断研究  

Diagnosis on Stall and Surge Failure of Centrifugal Compressor for Pneumatic System

作　　者：姚晓燕[1] 屈世栋[1] 蔡国娟 冯世杰[1] 山崧[1] 刘洋[1] YAO Xiao-yan;QU Shi-dong;CAI Guo-juan;FENG Shi-jie;SHAN Song;LIU Yang(Tianjin Branch Company,SINOPEC,Tianjin 300271,China)

机构地区：[1]中国石油化工股份有限公司天津分公司,天津300271

出　　处：《液压气动与密封》2020年第7期56-60,共5页Hydraulics Pneumatics & Seals

摘　　要：在分析离心式压缩机失速与喘振产生机理的基础上,以某工厂离心式压缩机为试验对象,在叶轮进出口、叶轮通道内部等位置布设压力测点,实时记录压缩机由稳定工况进到喘振状态过程中各测点的压力实时信号,分别采用信号时域、标准差与混沌特性指标对这些信号进行分析。试验结果表明,利用混沌特性分析方法能够较好的对时域信号分析方法与标准差分析方法进行补充,从而更精确地诊断出离心式压缩机发生失速与喘振的时间与位置。Based on the analysis of the stall and surge mechanism of the centrifugal compressor,taking a factory centrifugal compressor as a test object,set pressure measuring points at the inlet and outlet of impeller,inside of impeller channel and inlet of diffuser,use the dynamic pressure sensor to record the real-time pressure signals of the measuring points in the whole process of the compressor from the stable working condition to the surge condition,the signal time domain,standard deviation and chaos characteristics are used to analyze these signals.The test results show that the chaotic analysis method can better complement the time domain signal analysis method and the standard deviation analysis method,thereby more accurately diagnosing the time and location of the stall and surge of the centrifugal compressor.

关 键 词：离心式压缩机 气动系统 失速 喘振 诊断 混沌特性 

分 类 号：TH138[机械工程—机械制造及自动化]