排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2015, Vol. 33 Issue (1): 16-19    DOI: 10.3969/j.issn.1674-8530.13.0126
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Inlet design and it′s influence on vibration and noise centrifugal pump
Zhou Pan, Zhang Quan, Shuai Zhijun, Li Wanyou
School of Power and Energy Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001, China
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Abstract In order to research influence of inlet shape on centrifugal pump vibration and noise, ensuring the pump and impeller′s other geometric parameters constant, only changing the form of the centrifugal pump inlet, the vibration induced by inlet was studied from two aspects, test and numerical simulatione velocity and the unsteady state pressure characteristics of the two forms of centrifugal pump before and after improvement were obtained, analyzed comparatively and verified experimentally, measuring the vibration signals of model pump feet under different forms of inlet, and processing the vibration signal data to verify the simulation conclusion and the vibration generated by modifying centrifugal pump inlet. The results showed that: the changed centrifugal pump inlet has a certain improvement effect on pressure and velocity distribution within the inlet and impeller, straight centrifugal pump had smaller influence than the pre-impact spin one on flow field, all the observation points′ pressure fluctuations of impeller and volute were reduced and the seat vibration response was reduced by 5 dB under experimental verification.
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ZHOU Pan
ZHANG Quan
率Zhi-Jun
LI Wan-You
Key wordscentrifugal pump   inlet type   vibration and noise   flow field analysis     
Received: 2013-04-06;
Cite this article:   
ZHOU Pan,ZHANG Quan,率Zhi-Jun et al. Inlet design and it′s influence on vibration and noise centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(1): 16-19.
 
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