Abstract：In order to study the rules and characteristics of pressure fluctuation under different blade angle and head in an axial-flow pump, the method of physical model test was used to study a new pumping station in South-to-North water diversion. Three measuring points were arranged in impeller inlet, outlet and outlet conduit. By changing head of model pump, the pressure pulsation signals were collected for blade angle of ±4° and 0°. The amplitude distribution and frequency was analysed. The test results show that pressure pulsation of impeller inlet responses more strongly than that of impeller outlet. The pulsation of the three measuring points are increased with blade angle increasing, but the changes are small both in impeller inlet and outlet. In condition of small head, the frequency of blades are dominant. In the condition of large water head, the pulsation whose frequency is smaller than blades frequency is dominant and its amplitude increase with the flow decreaseing.
郑 源， 刘 君， 周大庆， 茅媛婷， 刘美琴. 大型轴流泵装置模型试验的压力脉动[J]. 排灌机械工程学报, 2010, 28(1): 51-55.
Zheng Yuan, Liu Jun, Zhou Daqing, Mao Yuanting, Liu Meiqin. Pressure pulsation of model test in large-size axial-flow pump. Journal of Drainage and Irrigation Machinery Engin, 2010, 28(1): 51-55.
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