The accuracy of traditional spectrum analysis for the diagnosis of reciprocating pump valve is not satisfied for the interference of the noise and the vibration of the adjacent parts.

往复泵泵阀振动信号的常规频谱分析，由于故障特征信息往往被淹没于强大的噪声以及相邻部件的干扰而使诊断精度大打折扣。

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Stop the pump to check if there is any abnormity noise or vibration during operation.

在运转中，如发现有异常声响和振动时，应立即停车。

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Abnormal vibration with pump.

泵不正常振动。

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