(1.School of Energy and Power Engineering,Yangzhou University,Yangzhou,Jiangsu 225127,China;2.Jiangsu Water Conservancy Project Construction Bureau,Nanjing,Jiangsu 210029,China)
Abstract：In order to directly obtain operation parameters,energy performances of large pumping stations were determined on the spot and analyzed.The discharges of water pumps were measured with five-hole probes and ADCP(acoustic doppler current profiler).Pump assembly head,input power of electrical motors and pump assembly efficiency were obtained through the data measured by measuring apparatus of the pumping station.The test precision of discharge and efficiency was analyzed.The efficiency conversion methods from model to prototype of the pump and the pump assembly were checked.The results indicate that the velocity distribution in cross section measured with five-hole probes can repeat very well,which stands for the actual axial velocity distribution in cross section.The test precision of the discharge and the efficiency could be controlled within 2.0%,which could meet the demand of field test of large pumping stations.The pump discharge and pump assembly efficiency are 11.837 8 m3/s,55.998% respectively when pump assembly head is 1.73 m,which meets the design demands of the pump assembly.The efficiency of prototype pump and pump assembly is obviously higher than that of model respectively because of size effect,and could be predicted accurately based on model efficiency by related suitable formulas.
仇宝云， 冯晓莉， 朱庆元， 何钟宁， 葛强. 大型泵站能量特性现场测试研究[J]. 排灌机械工程学报, 2011, 29(4): 322-327.
Qiu Baoyun,Feng Xiaoli,Zhu Qingyuan,He Zhongning,Ge Qiang. Investigation on field test of energy performances of large pumping station. Journal of Drainage and Irrigation Machinery Engin, 2011, 29(4): 322-327.
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