南水北调东线一期工程灯泡贯流泵性能分析  

Performance analysis of bulb tubular pumps in the first phase of South-to-North Water Diversion Eastern Route Project in China

作　　者：张仁田[1,2] 朱红耕 卜舸[2] 单海春[2] 周伟[2] 姚林碧[2] 

机构地区：[1]扬州大学水利与能源动力工程学院,江苏扬州225009 [2]江苏省水利勘测设计研究院有限公司,江苏扬州225127

出　　处：《排灌机械工程学报》2017年第1期32-41,共10页Journal of Drainage and Irrigation Machinery Engineering

基　　金："十二五"国家科技支撑计划项目(2015BAB07B01);江苏省水利科技指导性项目(苏水科[2015]5号文)

摘　　要：南水北调东线一期工程中有6座泵站采用灯泡贯流泵,由于其结构不同,因此性能存在差异.分析了这6座泵站装置模型试验成果,介绍了优化设计的方法和措施;根据模型装置验收试验成果,其性能均达到和优于合同保证值.采用量纲一的流量系数、扬程系数和空化系数,对6座泵站的性能进行对比分析,相同的水力模型在不同结构中的扬程系数-流量系数曲线基本重合,而且最高效率都达到了约80%,因此性能均较优.通过现场测试的数据,进一步验证了灯泡贯流泵的优越性能和良好的运行稳定性,而且实测数据好于模型装置试验预测值,灯泡贯流泵适合于南水北调工程低扬程泵站.Bulb tubular pumps have been installed in six pumping stations in the first phase of the South-to-North Water Diversion Eastern Route Project in China. For the difference in their structure, there exist differences in their performances. Experimental results of the model pumping systems are analyzed firstly, the methodologies and measures for optimal hydraulic design are introduced. According to the results in acceptance model tests conducted, the pump performances are superior to the guaranteed ones in the contracts. By using dimensionless head, flow rate coefficients and suction specific speed, a comparison of hydraulic performance among six pumping systems in the same pump model is carried out. The results show that the dimensionless head-flow rate curves are basically identical for six pumps, and their best efficiency is all as high as above 80% , demonstrating an excellent performance even these bulb tubular pumps are subject to different structures. In the light of the measured performance data on site, it is confirmed further that these bulb tubular pumps do have excellent performance and better operational stability, and the performance data are better than the predictions by making use of model test. The bulb tubular pump is suitable for low head pumping stations in the South-to-North Water Diversion Project in China.

关 键 词：南水北调 灯泡贯流泵 性能 效率 模型装置 

分 类 号：S277.9[农业科学—农业水土工程]