大型双向卧式泵站内流特性及能量损失特性研究  

Research on Internal Flow and Energy Loss Characteristics of Large Two-way Horizontal Pumping Station

作　　者：马筱霞 韩春辉 姚钰龙 MA Xiaoxia;HAN Chunhui;YAO Yulong(Guizhou Water Resources and Hydropower Survey and Design Institute Co.,Ltd.Zhejiang Branch,Hangzhou 311305,China;College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou,225009,China)

机构地区：[1]贵州省水利水电勘测设计研究院有限公司浙江分公司,浙江杭州311305 [2]扬州大学水利科学与工程学院,江苏扬州225009

出　　处：《河南水利与南水北调》2024年第10期75-76,89,共3页Henan Water Resources & South-to-North Water Diversion

基　　金：江苏省研究生科研创新计划项目(KYCX24_3755)。

摘　　要：文章以某大型双向卧式泵站为研究对象,对泵站内部流动特性及其能量损失特性开展了数值模拟研究。计算结果表明:由于马鞍区的存在,导致泵装置内充满回流、脱流、旋涡等不良流态;对称S形叶轮轴向力与流量呈明显的线性关系,而径向力则没有明显的规律;由于导叶出口的剩余环量以及出水流道出口段存在大尺度的回流现象,导致出水流道内湍动能高值区主要分布在进口和出口段;叶轮内的能量损失最高,而出水流道内的能量损失最低,其中马鞍区叶轮内能量损失高达22.58 m。研究成果对泵站设计及更新改造提供了参考。This study focuses on a specific large two-way horizontal pumping station,conducting numerical simulations to investigate the internal flow and energy loss characteristics.The calculation results show that:the presence of the saddle type zone leads to the occurrence of adverse flow phenomena such as reflux,separation of flow,and vortex formation within the pump assembly;the axial force on the symmetrical S-shaped impeller exhibits a clear linear relationship with flow rate,while the radial force lacks a discernible pattern;additionally,the residual swirl at the guide vane outlet and the significant reflux phenomenon at the outlet section of the outlet channel contribute to the predominant distribution of high turbulent kinetic energy zones at the inlet and outlet sections of the outlet channel.Moreover,the highest energy losses occur within the impeller,particularly within the saddle type zone,reaching up to 22.58 m,and the lowest energy losses within the outlet channel.These research findings provide valuable insights for the design and upgrading of pump stations.

关 键 词：双向泵站 内流特性 能量损失 数值模拟 

分 类 号：TV675[水利工程—水利水电工程]