竖井式贯流泵装置进出水流道优化CFD  

Research on the Inlet and Outlet Passage of the Shaft Tubular Pump System

作　　者：孙衍[1] 李尚红 颜蔚[1] 成立 SUN Yan;LI Shang-hong;YAN Wei;CHENG Li(Jiangdu Water Conservancy Project Bureau of Jiangsu Province,Yangzhou 225200,Jiangsu Province,China;School of Hydraulic,Energy and Power Engineering,Yangzhou University,Yangzhou 225127,Jiangsu Province,China)

机构地区：[1]江苏省江都水利工程管理处,江苏江都225200 [2]扬州大学水利与能源动力工程学院,江苏扬州2250091

出　　处：《中国农村水利水电》2018年第8期186-189,193,共5页China Rural Water and Hydropower

基　　金：国家自然科学基金资助项目(51779214);江苏省水利科技项目(2016035);江苏省产学研前瞻性联合项目(BY2015061-12);江苏省六大人才高峰计划项目(2015JXQC007);江苏省青蓝工程中青年学术带头人资助项目;江苏省优势学科建设工程资助项目

摘　　要：竖井式贯流泵装置流道顺直、水力损失小,并具有投资较少、结构较简单、安装维护方便等许多优点。为掌握竖井式贯流泵装置的水力特性,以便于对选择泵型和进、出水流道结构形式提供初步依据,结合盐城西闸站竖井式贯流泵进、出水流道优化,采用三维湍流数值计算的方法,分别对出水流道型线,进水流道高度、宽度及型线等多参数进行了优化,提出了综合考虑土建投资和水力性能的进、出流道设计方案。研究结果表明:进水流道竖井内外型线显著影响进水流态;改变进水流道的宽度和高度,提高了叶轮进口的流速均匀度和改善了入泵条件;减小出水流道宽度和取消原设计方案中的平直段管,改善了渐变扩散段的流态和压力分布。结果可为竖井式进、出水流道的水力设计、流道尺寸的合理确定提供理论依据。相关成果已在工程实施,取得了较好效果。The shaft tubular pump system has many advantages,such as straight passage,less hydraulic loss,less investment,simple structure,convenient installation and maintenance. In order to grasp the hydraulic characteristics of shaft tubular pump system to provide a preliminary basis for selecting the type of pump and inlet and outlet passage structure form,combined with shaft tubular pump system inlet and outlet flow optimization of Yancheng West Sluice Gate Station. Through the three-dimensional turbulence calculation method,several parameters such as the profile of the outlet passage,the height,width and profile of the inlet passage are optimized. The design scheme of inlet and outlet passage considering civil investment and hydraulic performance is put forward synthetically. The results of the study show that： The inlet flow pattern is significantly affected by shaft＇s inner and outer profile of inlet passage. The width and height of the inlet passage are changed to improve the velocity uniformity of the inlet of the impeller and the conditions of the pump entry. The flow pattern and pressure distribution of the gradual diffusion section are improved by reducing the width of the outlet passage and canceling the straight section tube in the original design scheme. The results can provide a theoretical basis for the hydraulic design of the shaft type inlet and outlet passages and the reasonable determination of the size of the flow passage. Relevant achievements have been implemented in the project and they have achieved good results.

关 键 词：竖井式 贯流泵装置 进水流道 出水流道 水力性能 数值模拟 

分 类 号：TV675[水利工程—水利水电工程]