煤层气排采螺杆泵定、转子接触应力研究

孙艳萍; 赵宁; 屈文涛; 王颖玥

doi:10.13433/j.cnki.1003-8728.2016.0602

煤层气排采螺杆泵定、转子接触应力研究

doi: 10.13433/j.cnki.1003-8728.2016.0602

1.
西北工业大学机电学院, 西安 710072;
2.
西安石油大学机械工程学院, 西安 710065;
3.
中石油煤层气有限责任公司临汾分公司, 山西临汾 042200

基金项目:

国家科技重大专项课题(2011ZX05038-002)资助

详细信息

作者简介:
孙艳萍(1977-),讲师,博士研究生,研究方向为石油机械有限元分析、机械摩擦磨损,xn_syp@163.com

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- 被引次数: 0
出版历程
- 收稿日期: 2015-03-06
- 刊出日期: 2016-06-05

Study on Contact Pressure Between Stator and Rotor of Screw Pump in CBM Drainage

1.
School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
2.
School of Mechanical Engineering, Xi'an Shiyou University, Xi'an 710065, China;
3.
Linfen Branch, PetroChina Coalbed Methane Company Limited, Shanxi Linfen 042200, China

摘要

摘要: 为了研究煤层气排采中螺杆泵定、转子的接触应力状况,以螺杆泵转子近圆心位置的两点为对象,建立了运动方程,并比较了在纯滚动状态下的有限元分析结果与赫兹(Hertz)接触应力的误差,得出与赫兹(Hertz)接触应力相近的结果,在过盈量为0.05 mm至0.3 mm范围内,最大误差值为2.46%,最小误差值仅为0.048%;考虑定、转子接触非线性,用罚函数法引入接触界面约束条件,用ANSYS Workbench软件来求解定、转子接触应力。结果表明,螺杆泵在工作时,定子与转子的接触应力受接触位置、过盈量的影响显著;当定、转子摩擦系数不为0时,摩擦系数对接触应力的影响不敏感;当转子转速较高时,转速对接触应力的影响不敏感。
- 螺杆泵 /
- 煤层气 /
- 定子 /
- 接触应力 /
- ANSYS Workbench
Abstract: Aiming to the two points nearby the center of screw pump rotor, the equations of motion is built to study the contact pressure of stator and rotor of screw pump, and the biggest difference between the results via finite element method and Hertz method is 2.46% and the smallest is 0.048% at the interferences from 0.05 to 0.3 mm. In the contact nonlinear analysis of the stator and rotor of screw pump, the contact surface boundary conditions by the penalty function method is used in equations, and then get the contact pressure with ANSYS Workbench software. It shows that the influence of contact place and interference on the contact pressure is great, while the influence of the rotor speed and friction coefficient on the contact pressure is slight when the friction coefficient is not equal 0 and the speed is higher.
- ANSYS Workbench /
- CBM /
- contact pressure /
- screw pump /
- stator

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参考文献(15)

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