基于CFD的三螺杆泵螺杆轴向力计算  

Calculation of Three Screw Pump Screw Axial Force Based on CFD

作　　者：王兆强 朱华炳[1] 何干 程飞 WANG Zhao-qiang;ZHU Hua-bing;HE Gan;CHENG Fei(College of mechanical Engineering,Hefei University Technology,Hefei 230009,China;School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;Huangshan RSP Manufacturing Co.,Ltd.,Huangshan 245000,China)

机构地区：[1]合肥工业大学机械工程学院,安徽合肥230009 [2]上海工程技术大学机械与汽车工程学院,上海201620 [3]黄山工业泵制造有限公司,安徽黄山245000

出　　处：《液压气动与密封》2019年第6期4-7,共4页Hydraulics Pneumatics & Seals

基　　金：流体动力与机电系统国家重点实验室开放基金(GZKF-201514)

摘　　要：在SolidWorks软件中建立了三螺杆泵的流道模型,运用Fluent求解器对三螺杆泵腔室内的非定常流动进行数值模拟,得到了三螺杆泵进出口压差,螺杆与衬套间隙,对三螺杆泵螺杆轴向力的影响。计算结果表明:随着三螺杆泵进出口压差的增大,螺杆轴向力是线性增大的;随着螺杆与衬套间隙的增大,三螺杆泵的泄漏增大导致三螺杆泵螺杆轴向力减小;随着进出口压力差的不断增大,不同间隙条件下的三螺杆泵螺杆轴向力都是逐渐增大,但是不同间隙螺杆轴向力增大幅度不同,间隙越小,螺杆轴向力增大幅度越大。The flow channel model of the three-screw pump is established by SolidWorks software,fluent solver is used to simulate the unsteady flow in three-screw pump chamber.The influence of the pressure difference between the inlet and the outlet of the three-screw pump and the gap between the screw and the bushing on the axial force of the screw of the three-screw pump is analyzed.The calculation results show that with the increase of the inlet and outlet pressure difference of the three-screw pump,the axial force of the screw increase linearly.As the gap increases,the three-screw pump due to leakage caused by the screw axial force suffered is gradually reduced.With the pressure difference between inlet and outlet increases,the axial force of the screw of the three-screw pump under different clearance conditions is gradually increased,but the increase of the axial force of the different clearance screws is different.The smaller the clearance,the greater the increase in the axial force of the screw.

关 键 词：流道 CFD 数值模拟 轴向力 

分 类 号：TH327[机械工程—机械制造及自动化]