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单螺杆泵定子和螺杆的有限元分析
引用本文:杨秀萍,郭津津.单螺杆泵定子和螺杆的有限元分析[J].机床与液压,2007,35(3):43-45,17.
作者姓名:杨秀萍  郭津津
作者单位:天津理工大学机械工程学院,天津,300191
摘    要:单螺杆泵定子橡胶是决定泵寿命和效率的关键部件.本文采用有限元法对定子的性能进行分析,得到了定子在均匀压力和压差作用下的应力、应变云图及变形量随压力变化的分布规律;对定子和螺杆进行接触计算,结果表明:定子与螺杆在圆弧顶接触时,剪应变和变形最大;定子两圆弧对角磨损最严重,同时定子的磨损随过盈量增大而明显增大.由于目前还没有能够直接对实际工况下的定子橡胶的变形和受力状态进行测试的有效手段,本文为定子的优化设计提供了理论基础和有效的数值模拟方法.

关 键 词:单螺杆泵  定子  橡胶  有限元法  接触分析  变形  螺杆泵定子  有限元分析  Stator  Pump  Rotor  Helical  Element  Analysis  模拟方法  数值  理论  优化设计  手段  测试  受力状态  工况  过盈量  严重  磨损  剪应变  接触计算
文章编号:1001-3881(2007)3-043-3
修稿时间:2006-03-07

Finite Element Analysis for a Helical Rotor Pump Stator and Screw
YANG Xiuping,GUO Jinjin.Finite Element Analysis for a Helical Rotor Pump Stator and Screw[J].Machine Tool & Hydraulics,2007,35(3):43-45,17.
Authors:YANG Xiuping  GUO Jinjin
Affiliation:School of Mechanical Engineering, Tianjin University of Technology, Tianjin 300191, China
Abstract:The rubber in a helical rotor pump stator is a key element to decide its life and efficiency.Stator properties were analyzed by FEM.Stress and strain contours of the stator under an even inner pressure and a pressure difference,deformation distribution varied with pressure were obtained.Contact calculation results of the stator and screw show that cut strain and deformation are maximums when they are contacted at circle arc end.The stator abrasion is most serious on the cross arc and obviously increases varied with interference.The effective method has been not found for testing the deformation and forced state of the stator rubber under a real working condition,so this research provides theory basis and effective simulation method for stator optimization design.
Keywords:Eccentric helical rotor pump  Stator  Rubber  Finite element method  Contact analysis  Deformation
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