往复泵是重工业中普遍采用的关键性生产设备。研究往复泵的故障诊断 ,针对往复机械激振源复杂 ,从往复泵液力端泵阀的振动信号入手 ,提出自适应提取一整段时域振动波形上对应泵阀特征波形的方法 ,取得了较好的效果 Reciprocating pumps are commonly used in heavy industry, the key production equipment. In this paper, the fault diagnosis of reciprocating pump is studied. According to the complexity of the reciprocating mechanical excitation source and the vibration signal from the hydraulic pump end of the reciprocating pump, a method of adaptively extracting the characteristic waveform of the corresponding pump valve in the whole time domain vibration waveform is proposed. Better effect