小型泵站进水池改造为肘形进水流道水力性能研究  

Study on Hydraulic Characteristics of Elbow Inlet Conduit Reconstructed From Intake Tank in Small Scale Pumping Station

作　　者：徐鹏飞 朱波 郭瑞[1] 朱昊 段鸿飞 徐磊[2] XU Peng-fei;ZHU Bo;GUO Rui;ZHU Hao;DUAN Hong-fei;XU Lei(Huaian Surveying and Design Institute of Water Resources Co.,Ltd.,Huaian 223001,Jiangsu Province,China;College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225009,Jiangsu Province,China;Huaian Water Conservancy Engineering Construction Management Service Center,Huaian 223005,Jiangsu Province,China)

机构地区：[1]淮安市水利勘测设计研究院有限公司,江苏淮安223001 [2]扬州大学水利科学与工程学院,江苏扬州225009 [3]淮安市水利工程建设管理服务中心,江苏淮安223005

出　　处：《中国农村水利水电》2024年第9期130-136,共7页China Rural Water and Hydropower

基　　金：江苏水利科技项目(2022010);国家自然科学基金项目(51779215)。

摘　　要：为了解决淮安市徐溜电灌站水泵进水流态差导致机组振动和水泵装置运行效率低下等问题,基于该电灌站的设计参数,采用三维湍流流动数值模拟方法对进水池及其改造为肘形进水流道的水力性能进行了研究,对两种进水型式时的泵装置能量性能进行预测计算,并对改造前后的流道及泵装置的流态和性能进行比较分析。研究结果表明:该站进水池具备改造为肘形进水流道的条件;原进水池方案的流道水头损失大、池内流态紊乱,改造后的肘形进水流道水头损失显著减小、流场平顺无旋涡,水力性能大幅度提升;改造后的泵装置水力性能较改造前明显提升,设计流量下泵装置效率提升5%以上。改造后现场水泵机组整体运行稳定,表明将开敞式进水池改造为肘形进水流道是成功的,可为同类型的小型泵站的建设和改造提供参考。In order to solve the problems of vibration of the pump unit and low pump system efficiency caused by the poor inflow pattern of the intake tank for the Xuliu Electric Pumping Station in Huai′an City,based on the design parameters of the pumping station,the method of three-dimensional turbulence numerical simulation was used to study on the hydraulic performance of the intake tank and the reconstructed elbow inlet conduit.The energy performance of the pump device was predicted and calculated for the two types of inlet conduits;the flow pat-tern and hydraulic performance of the conduits and pump devices before and after the reconstruction were compared and analyzed.The re-search results show that the intake tank of the station is suitable to be reconstructed into elbow inlet conduit;the hydraulic loss of the original scheme of intake tank is large,and the flow pattern in the intake tank is disordered,while the hydraulic loss of the elbow inlet conduit is sig-nificantly reduced after reconstruction,the flow field is smooth without vortex,and the hydraulic performance is greatly improved;the hy-draulic performance of the reconstructed pump device is significantly improved compared with that before the reconstruction,and the effi-ciency of the pump device is increased by more than 5%under the design flow rate.After the reconstruction,the on-site pump unit runs sta-bly,showing that it is successful to reconstruct the intake tank into elbow inlet conduit,which can provide reference for the construction and reconstruction of small scale pumping stations of the same type.

关 键 词：小型泵站 进水池 肘形进水流道 水力性能 

分 类 号：TV675[水利工程—水利水电工程]