流体机械2017，Vol.45Issue(11)：34-40,7.DOI:10.3969/j.issn.1005-0329.2017.11.007
不同叶片出口角下离心泵压力脉动及径向力分析
Analysis on Pressure Fluctuation and Radial Thrust of Centrifugal Pump under Different Blade Outlet Angle
摘要
Abstract
The effect of blade outlet angle on pressure fluctuation and radial thrust of centrifugal pump are studied based on the experimental results and numerical simulation were in good agreement.A two-stage mine centrifugal pump was chosen for the research object,four kinds of impellers were established with different blade outlet angle.The external performance of centrifugal pump was predicted with CFD simulation,the pressure fluctuation distribution in impeller,vane and volute as well as radial thrust of impeller were obtained and analyzed comparatively.The results shows that the pressure fluctuation in pump is cyclical,and the higher pressure fluctuation intensity occur when β 2 are 16° and 20°.The pressure fluctuation in vane and volute are gradually increased with the blade outlet angle increasing,and the intensity in vane is stronger than that in volute,and fluctuation frequency in both vane and volute is blade frequency with different blade outlet angle.The blade outlet angle has certain impact on radial thrust distribution on impellers,the radial thrust of impeller ascend withβ2 increasing,and the radial thrust of first impeller is larger than the other impeller,volute has greater improvement on impeller radial thrust than vane.关键词
离心泵/数值模拟/叶片出口角/压力脉动/径向力Key words
centrifugal pump/numerical simulation/blade outlet angle/pressure fluctuation/radial thrust分类
机械制造引用本文复制引用
张忆宁,曹卫东,姚凌钧,姜昕..不同叶片出口角下离心泵压力脉动及径向力分析[J].流体机械,2017,45(11):34-40,7.基金项目
江苏省自然科学基金资助项目(BK20131256) （BK20131256）
江苏省重点研发计划竞争项目(BE2017126) （BE2017126）
