大型低扬程开敞式泵站性能测试研究

发布时间：2018-02-26 15:25

本文关键词： 开敞式泵站低扬程流量效率流态现场测试数值模拟　出处：《给水排水》2017年03期 　论文类型：期刊论文

【摘要】：苏南某泵站机组进出水流道结构改造之后,对该泵站的性能参数进行了现场测试。对该泵站机组流量进行测量,测试的误差为±0.53%。利用泵站的自动采集系统测得扬程和功率,通过效率的计算公式,得到该泵站在不同工况下的效率值。利用CFD软件建立该泵站的泵装置三维模型,并进行数值模拟计算,得到水力性能参数。将现场测试的结果与数值模拟结果相比较,结果表明,数值模拟的结果与现场测试的结果较为吻合,设计工况下,效率的误差为±1.25%,数值模拟方法具备较高精度,其结果可靠性较高。对泵装置内的水流流态进行分析,进水流道和出水流道封闭侧的漩涡影响该泵站泵装置的效率。
[Abstract]:After the structural transformation of the inlet and outlet passage of a pumping station in southern Jiangsu Province, the performance parameters of the pumping station were tested on the spot. The measurement error of the unit flow was 卤0.53. The lift and power were measured by the automatic sampling system of the pumping station. The efficiency value of the pump station under different working conditions is obtained by calculating the efficiency formula. The three-dimensional model of the pump device of the pump station is established by using CFD software, and the numerical simulation calculation is carried out. The hydraulic performance parameters are obtained. The results of field test and numerical simulation are compared. The results show that the results of numerical simulation are in good agreement with those of field test. The error of efficiency is 卤1.25.The numerical simulation method has higher accuracy and higher reliability of the results. The flow pattern in the pump unit is analyzed, and the vortex in the inlet and outlet channels affects the efficiency of the pump station.
【作者单位】：河海大学水利水电学院;河海大学能源与电气学院;
【基金】：国家自然科学基金面上项目(51579080);国家自然科学基金重点项目(51339005) 安徽省自然科学基金项目(1608085ME119) 中央高校基本业务费(2015B34314)
【分类号】：TV675

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