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| Effects of number of blades on flow induced vibrationand noise of centrifugal pumps |
| TAN Ming-Gao, WANG Yong, LIU Hou-Lin, WU Xian-Fang, WANG Kai |
| (Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu 212013, China) |
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Abstract The present state of research on flow induced vibration and noise of centrifugal pumps was introduced. Based on the virtual instrument data acquisition system and a routine pump test system, a closedloop test rig was established for measurement of flow induced vibration and noise in centrifugal pumps. A synchronous acquisition was realized for pump performance parameters and flow induced vibration and noise signals. A singlestage, endsuction centrifugal pump with 5 blades, whose specific speed was 93, was chosen as the experimental model. The additional impellers respectively with 4, 6 and 7 were made and tested in the same volute. The performance of pumps with those four impellers were measured in the whole flow rate, the vibration and noise signals were recorded and processed as well. The experimental results show that the highest vibration intensity is observed in the pump with 5 blades. With increasing flow rate, the vibration intensity level keeps constant initially and then significantly rises. The frequency of noise issued from the pumps mainly was in the range of 0-2 000 Hz. With increasing number of blades, the peak shaft frequency augments gradually at small flow rates. Those outcomes will be instructive and helpful for establishing a hydraulic design method to ensure centrifugal pumps with a low level of flow induced vibration and noise.
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Received: 06 April 2011
Published: 30 March 2012
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| 参考文献(References)［1］马群南,吴仁荣,徐琼琰,等.吸入压力对泵振动和噪声的影响［J］.水泵技术,2005(2):34-38.Ma Qunnan Wu Renrong, Xu Qiongyan, et al. The effects of suction pressure on pump vibration and noise［J］. Pump Technology, 2005(2): 34-38.(in Chinese)［2］袁寿其,杨勇,袁建平,等.离心泵内部流动诱导振动噪声测试系统设计［J］.排灌机械,2009,27(1):10-14.Yuan Shouqi, Yang Yong, Yuan Jianping, et al. Measurement system design of flowinduced noise in centrifugal pumps［J］. Drainage and Irrigation Machinery, 2009, 27(1): 10-14.(in Chinese)［3］Perotti R B, Parrondo J L, Perez J G, et al. Discrete noise sources in a centrifugal pump operating at partial load［C］／／Proceedings of the 7th International Congress on Sound and Vibration. Lisboa, Portugal: ［s.n.］, 2005:1849-1856.［4］Jiang Y Y,Yoshimura S, Imai R,et al.Quantitative evaluation of flowinduced structural vibration and noise in turbomachinery by fullscale weakly coupled simulation［J］.Journal of Fluids and Structures,2007, 23(4): 531-544.［5］Andreas L, Gunther B. Numerical simulation and evaluation of velocity fluctuations during rotating stall of a centrifugal pump［J］.Journal of Fluids Engineering, 2011,133(8): 081102.［6］倪永燕.离心泵非定常湍流场计算及流体诱导振动研究［D］.镇江:江苏大学流体机械工程技术研究中心,2008.［7］吴仁荣,陈文毅.降低离心泵运行振动的水力设计［J］.机电设备,2004(4):18-22.Wu Renrong, Cheng Wenyi. Hydraulic design for reducing operating vibration of centrifugal pumps［J］. Mechanical and Electrical Equipment, 2004(4): 18-22.(in Chinese)［8］Rodriguez C G, Egusquiza E, Santos I F. Frequencies in the vibration induced by the rotor stator interaction in a centrifugal pump turbine［J］. Journal of Fluids Engineering, 2007, 129(11): 1428-1435.［9］冯涛,刘克,李晓宏,等.离心泵水动力噪声测试系统的研制［J］.流体机械,2005(4):27-30.Feng Tao, Liu Ke, Li Xiaohong, et al.Development of the experimental system for measuring the hydrodynamic noise in centrifugal pump［J］.Fluid Machinery,2005(4):27-30.(in Chinese)［10］王济,胡晓.MATLAB在振动信号处理中的应用［M］.北京:中国水力水电出版社,2006. |
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