大型泵站能量特性现场测试研究  

Investigation on field test of energy performances of large pumping station

作　　者：仇宝云[1] 冯晓莉[1] 朱庆元 何钟宁[1] 葛强[1] 

机构地区：[1]扬州大学能源与动力工程学院,江苏扬州225127 [2]江苏省水利工程建设局,江苏南京210029

出　　处：《排灌机械工程学报》2011年第4期322-327,共6页Journal of Drainage and Irrigation Machinery Engineering

基　　金：全国百篇优秀博士学位论文作者专项基金资助项目(2007B41);国家自然科学基金资助项目(51079125);江苏省'333高层次人才工程'专项基金资助项目(2008108)

摘　　要：为了直接获得大型泵站运行参数,对大型泵站能量性能进行了现场测试和分析.采用五孔探针和声学多普勒流速剖面仪(ADCP)测定水泵流量,根据泵站设置的仪表读取相关数据,计算得到泵装置扬程、电动机输入功率和泵装置效率;分析流量与效率测定的精度,检验原型与模型水泵效率和泵装置效率换算方法.试验泵站五孔探针测流断面选在水泵基坑以上、叶轮前的断面.结果表明:五孔探针法测定泵装置过流断面流速分布重复性好,能够反映断面实际轴向流速分布规律,流量和效率测试精度可以控制在2.0%以内,能够满足大型泵站现场测试的要求.泵装置扬程为1.73 m时,水泵流量与泵装置效率分别为11.837 8 m3/s,55.998%,达到了设计要求.由于尺寸效应,原型水泵和泵装置效率明显高于模型效率.采用相关公式,可以根据模型效率较为准确地预测原型水泵效率和泵装置效率.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.

关 键 词：大型泵站 现场测试 水泵流量 泵装置效率 五孔探针 

分 类 号：S277.9[农业科学—农业水土工程] TV675[农业科学—农业工程]