【作者】 高晶波； 王日新； 徐敏强； 夏松波；

【Author】 GAOJing-bo WANG Ri-xin XUMin-qiang XIA Song-bo(Harbin Institute of Technology Haerbin 150001)

【机构】 哈尔滨工业大学；

【摘要】 2D12压缩机应用于天然气加压传输过程中,气阀故障是2D12压缩机的一种常见故障,目前对气阀故障诊断多采用全域信号的方法,此种方法不能反映信号瞬时变化特征。本文分析了2D12往复压缩机气阀的工作过程,针对气阀工作特点提取吸气阀与排气阀均关闭时刻的压缩阶段的局域声音信号,应用广义双线性时频法诊断气阀故障,给出的正常气阀和故障气阀的时频分析图,此种方法可以有效的诊断气阀故障。更多还原

【Abstract】 The model 2D12 of compressor usually transfer natural gas, but the frequency of fault of valve has an effect on the working of compressor. The whole signal is using to diagnose the fault of valve, but do not give the character of real-time signal. In the paper, the work process of valve is analyzed, and the sound signal of valve cap of compress process is being the part character signal that the admission valve and exhaust valve are closed. The signal is analyzed by generalized bilinear time-frequency distribution and given time-frequency distribution figure of normal and fault valve. This method is efficient to diagnose the fault of valve.更多还原