|
|
|
| Transition process of pump device model test in closed test-bed |
| Ma Xinhua, Li Hao, Shi Weidong， Shao Xin |
| （江苏大学流体机械工程技术研究中心， 江苏 镇江 212013） |
|
|
|
|
Abstract In order to study the characteristics of the pump test-bed and pump working conditions, physical simulation experiment method was used to do the experiment of a model pump used in some pump station on a vertical closed pump test-bed. The averaged pressure before the inlet and after the outlet of the pump，as well as the averaged pressure in upstream and downstream of the pump test-bed, and pump working conditions parameters were collected with gradually reducing the flow under constant rotating speed. The change characters of pump pressure before the inlet and after the outlet as well as shaft power were analyzed, and the internal changes of both the pump device model and test system during the transition to be stable were discussed. The test results show that during the transition process, the inlet pressure fluctuation of the pump is subtle and can always be in relatively stable state. The outlet pressure in the initial stage shows ascendant trend fluctuations, and the fluctuations are intensive. But after a while, tends are relatively stable. The shaft power changes are similar to the pressure fluctuations after outlet. In the initial stage, changes are obvious, but the fluctuations gradually become stable. This period of the process has continued for more than 90 s.
|
|
Received: 18 October 2010
Published: 30 September 2011
|
|
|
|
| [1] Benra F K. Numerical and experimental investigation on the flow induced oscillations of a singleblade pump impeller[J].Fluids Engineering, 2006,6(128):783-793.[2] Kelder J D H,Dijkers R J H,Esch B P M,et al. Experimental and theoretical study of the flow in the volute of a low specific speed pump[J].Fluid Dynamics Research，2001,28（4）:267-280.[3] 姚志峰,王福军,肖若富,等.离心泵压力脉动测试关键问题分析[J].排灌机械工程学报，2010，28（3）：219-223.Yao Zhifeng,Wang Fujun,Xiao Ruofu,et al. Key issues in pressure fluctuation experiments for centrifugal pumps[J].Journal of Drainage and Irrigation Machinery Engineering,2010，28（3）：219-223.(in Chinese)[4] 郑 源，刘 君,周大庆,等.大型轴流泵装置模型试验的压力脉动[J].排灌机械工程学报,2010,28(1):51-55.Zheng Yuan,Liu Jun,Zhou Daqing,et al. Pressure pulsation of model test in large size axial flow pump[J].Journal of Drainage and Irrigation Machinery Engineering, 2010,28(1):51-55.(in Chinese)[5] 王福军,张 玲，张志民.轴流泵不稳定流场的压力脉动特性研究[J].水利学报,2007,38(8) :1003-1008.Wang Fujun,Zhang Ling,Zhang Zhimin. Analysis on pressure fluctuation of unsteady flow in axialflow pump[J].Journal of Hydraulic Engineering, 2007,38(8) :1003-1008.(in Chinese)[6] 倪永燕,潘中永,李 红，等.出口压力波动特性在离心泵汽蚀监测中的应用[J].排灌机械,2006,24(5):40-43.Ni Yongyan,Pan Zhongyong,Li Hong,et al. Application of characters of discharge pressure fluctuation to monitor of centrifugal pump[J].Drainage and Irrigation Machinery,2006,24(5):40-43.(in Chinese)[7] 季柳金,李 红,王艳艳,等.降低离心式纸浆泵压力脉动的措施[J].流体机械，2006,34(8):50-52.Ji Liujin,Li Hong,Wang Yanyan,et al. Measures of reducing pressure pulsation in centrifugal pulp pump[J].Fluid Machinery,2006,34(8):50-52.(in Chinese)[8] 袁寿其,薛 菲,袁建平,等.离心泵压力脉动对流动噪声影响的试验研究[J].排灌机械,2009,27(5):287-290.Yuan Shouqi,Xue Fei,Yuan Jianping,et al. Experimental study on impact of pressure fluctuation on flow noise in centrifugal pump[J].Drainage and Irrigation Machinery, 2009,27(5) :287-290.(in Chinese)[9] 丛国辉，王福军.双吸离心泵隔舌区压力脉动特性分析[J].农业机械学报,2008,39(6):60-67.Cong Guohui,Wang Fujun. Numerical investigation of unsteady pressure fluctuations near volute tongue in a doublesuction centrifugal pump[J].Transactions of the Chinese Society for Agricultural Machinery,2008,39(6):60-67.(in Chinese)［10］ 刘厚林,任 芸,谈明高,等.双流道泵内压力脉动的CFD计算及测试[J].排灌机械工程学报,2010,28(4):277-281.Liu Houlin,Ren Yun,Tan Minggao,et al. CFD calculation and test of pressure fluctuation in doublechannel pump[J].Journal of Drainage and Irrigation Machinery Engineering,2010,28(4):277-281.(in Chinese) |
|
|
|
