小型全封闭压缩机典型故障壳体振动特性实验研究

Experimental study on virbration characteristic of typical fault shell of small hermetic compressor

在线诊断小型全封闭压缩机的零部件故障是压缩机故障诊断的难题。本文通过分析全封闭压缩机壳体的振动信号,利用时频分析方法对振动信号进行处理,研究传递在壳体顶面与侧面的振动信号与典型故障的特征关系,探明零部件典型故障的壳体振点位置、振动信号特征等状态参数关系,为小型全封闭压缩机的在线故障诊断提供了相关理论与诊断依据。

It is a difficult problem for compressor fault diagnosis to diagnose the component faults of small-sized hermetic compressor on line.In this paper,by analyzing the vibration signal of the hermetic compressor casing,the vibration signal is processed by time-frequency analysis method,and the characteristic relationship between the vibration signal transmitted on the top and side of the casing and the typical fault is studied.The vibration position,vibration signal and other characteristic relations of typical component faults are proposed,which provides the related theory and diagnosis basis for online fault diagnosis of small-sized hermetic compressors.