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| Vibration Analysis of Cavitation Monitoring in Centrifugal Pump |
| Duan Xiang-yang; Wang Yong-sheng; Su Yong-sheng |
| College of Naval Architecture and Marine Power，Naval University of Engineering，Wuhan 430033，China |
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Abstract Abstract:. Vibration signals of cavitation in centrifugal pump were acquired by acceleration transducers mounted on different positions in order to find out the cavitation characteristics. The test results showed that the measuring point B mounted on pump case was more sensitive to cavitation and more suitable to act as monitoring point. The signals appeared a up-down trend, and emerged obvious peak values in 6kHz and 8kHz. The band vibration acceleration levels in 5~8 kHz and 8~12 kHz, and the broadband vibration acceleration levels in 5~12 kHz had about 10dB uprising after cavitation, which could clearly reflect the vibration tendency of cavitation, and could be used as indicators for cavitation monitoring.
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Received: 24 November 2009
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2011, Vol. 30 
