Experimental Study on Centrifugal Pump Vibration in Different Operation Conditions
Experimental Study on Centrifugal Pump Vibration in Different Operation Conditions
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发表时间：
2012
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通讯作者：
Chen Chang-sheng
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作者：
Chen Chang-sheng
船舶设备的多负荷运行一直是船舶设备的一个特点，本文以船用离心泵为研究对象，通过试验研究了船用离心泵的多负荷运行对泵性能的影响。分析了离心泵转速、流量等参数的变化规律，通过试验验证了转速对振动的影响规律，得出离心泵振动水平与转速的4 ~ 9次方成正比的结论流量的变化对低频和高频振动的影响大于对中频振动的影响，在离心泵叶片的特征频率处，这种影响甚至更大，一般的结论是，当要求低流量工况时，应降低泵的转速以降低运行噪声，而不是调整泵的阀门。
Multi-loaded operation is always a feature of marine equipment.Experiments were done on marine centrifugal pumps to study the influence of the shifting-load.Variation of parameters related to rotation speed and flow rate was analyzed.Results of experiments confirmed the empirical formula of the rotation speed against vibration.It was concluded that the vibration level of the centrifugal pump is proportional to the forth to ninth power of the rotation speed.Changing of flow rate has a greater influence on low and high frequency vibration than that on intermediate frequency vibration.The influence even becomes much larger at the characteristic frequency of blades of the centrifugal pump.The general conclusion is that when low flow rate operation condition is required,the rotation speed of the pump should be lowered to reduce the operation noise instead of adjusting the valve of the pump.