导叶式混流泵振动噪声的实验研究.pdf

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JOURNAL OF ENGINEERING THERMOPHYSICS May, 2013
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:TH311 :A : 0253–231X(2013)05–0874–04
Experimental Study on Flow-Induced Vibration and Noise of
the Mixed Flow Pump With Guide Vane
HU Fang-Fang CHEN Tao WU Da-Zhuan WANG Le-Qin
(Institute of Chemical machinery, Zhejiang University, Hangzhou 310027, China)
Abstract The rotor-stator interaction between impeller and guide vane is a major source of pressure
pulsation, vibration and noise in mixed flow pump with guide vane. In this paper, experiments were
carried out to study the pressure fluctuation, vibration and noise characteristics at different operating
conditions. The result shows that the blade passing frequency is the dominate contents of pressure
fluctuation at low frequency, vibration and noise data. And the amplitude of pressure fluctuation
at this frequency is very sensitive to the change of flow rate. It manifests th