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Journal of Drainage and Irrigation Machinery Engin  2018, Vol. 36 Issue (6): 472-477    DOI: 10.3969/j.issn.1674-8530.16.0217
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Vibration test and analysis on the centrifugal pump
XUE Zenghong*, CAO Xiao, WANG Tianzhou
National Enterprise Technology Center, Chongqing Pump Industry Co. Ltd., Chongqing 400033, China
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Abstract The vibration test and analysis is difficult to be conducted, and the valid ways are still lack, which causes many centrifugal pumps to exceed the standard vibration in a big potential risk. In order to solve the problem, the HG8908C, a vibration data collection system of Beijing Jinghang, was used to monitor the vibration signal on the centrifugal pump manufactured by Chongqing Pumps Company. The vibration signal characteristic of amplitude domain, time domain and frequency domain were analyzed in detail by fast fourier transforms(FFT). Besides, combined with the typical database of vibration faults, the faults, such as the friction fault between pump rotor and casing, and the poor supporting stiffness on pipe by balancing axis force(PBAF), were diagnosed. Based on the above mentioned diagnostic outcome and the static bending deflection of pump rator by FEM, the install center of pump rotor was adjusted, the thickness of PBAF was increased, the support as welded among PBAF and pump body and other solutions were carried out. The test results show that the solution ways have a positive effect on it, and the pump can work for hours in a good state. The test results show that the fault diagnosis methods and the solution ways can solve better the matters of vibration faults on the centrifugal pumps, which is of a certain value to the similar problems.
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Articles by authors
XUE Zeng-Hong-*
CAO Xiao
WANG Tian-Zhou
Key wordscentrifugal pumps   reliability   vibration analysis   fast fourier transforms   fault diagnosis     
Received: 2016-09-16;
Cite this article:   
XUE Zeng-Hong-*,CAO Xiao,WANG Tian-Zhou. Vibration test and analysis on the centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(6): 472-477.
 
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