螺杆空压机转子橡胶涂层厚度有限元分析  

Finite element analysis of screw air compressor rotors with rubber coating

作　　者：孔德逊 王战中 黄帅可 董文杰 张明亮 KONG De-xun;WANG Zhan-zhong;HUANG Shuai-ke;DONG Wen-jie;ZHANG Ming-liang(College of Mechanical Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学机械工程学院,河北石家庄050043

出　　处：《机电工程》2022年第5期674-680,共7页Journal of Mechanical & Electrical Engineering

基　　金：河北省高等学校科学技术研究资助项目(BJ2018019)。

摘　　要：转子不同厚度的橡胶涂层对螺杆空压机气密性和转子碰磨问题有很大影响,针对这一问题,对不同厚度橡胶涂层转子在正常工作中产生的等效应力和应变进行了研究。以某型号1立方空压机阴、阳转子为例,首先,在不改变转子几何尺寸的前提下,采用SolidWorks软件分别建立了厚度范围在0.5 mm~2.1 mm、间隔为0.1 mm的17种有橡胶涂层的阴、阳转子模型;然后,利用MATLAB软件编写了程序,并计算了空压机正常工作时转子所受的内力矩;最后,采用ANSYS显示动力学模块,对有不同厚度的橡胶涂层转子分别进行了有限元分析,得到了等效应力和等效弹性应变数据,并对其进行了对比分析。研究结果表明:在综合考虑应力、应变和齿顶间隙等因素后,对螺杆空压机转子橡胶涂层为0.8 mm时符合要求,且此时空压机气密性能优异;该结果可以为螺杆空压机的性能、气密性和效率的提高提供新的方法。The rubber coating of rotors with different thickness has great influence on the air tightness of screw air compressor and the friction of rotor,aiming at solving this problem,the equivalent stress and strain of rubber coating rotors with different thickness in normal operation were studied.The male and female rotors of one type of 1 cubic air compressor were taken as an example to research.Firstly,17 male and female rotor models with thickness ranging from 0.5 mm to 2.1 mm and spacing of 0.1 mm were established with SolidWorks software respectively without changing the geometry of the rotors;then,a program was made with MATLAB software to calculate the internal torque of the rotors when the compressor was working normally;finally,finite element analysis of rubber coating rotors with different thicknesses were carried out with Explicit Dynamics of ANSYS software,and those data of equivalent stress and equivalent elastic strain obtained from above were compared and analyzed.The results indicate that when the rubber coating thickness is 0.8 mm,it meets the requirements and has excellent air tightness performance,after considering factors such as stress,strain and tooth tip clearance.It provides new ideas and methods for improving the performance,air tightness and efficiency of screw compressors.

关 键 词：螺杆式空气压缩机 气密性能 橡胶涂层 转子模型 阴阳转子 内力矩 等效应力和应变 

分 类 号：TH45[机械工程—机械制造及自动化]