旋转轴唇形密封接触分析  

Rotary shaft lip seal contact analysis

作　　者：施雷[1,2] 冯一璟[3] 冯定[1,2] 向如 涂忆柳[1,2] SHI Lei FENG Yijing FENG Ding XIANG Ru TU Yiliu(School of Mechanical Engineering, Yangtze University, Jingzhou, Hubei 434023, China Hubei Tool Research Center for Oil ＆ Gas Drilling and Completion, Jingzhou, Hubei 434023, China School of Mechanical and Transportation Engineering, China University of Petroleum （Beijing） , Beijing 102249, China)

机构地区：[1]长江大学机械工程学院,湖北荆州434023 [2]湖北省油气钻完井工具工程技术研究中心,湖北荆州434023 [3]中国石油大学(北京)机械与储运工程学院,北京102249

出　　处：《中国科技论文》2017年第5期570-573,共4页China Sciencepaper

基　　金：国家自然科学基金资助项目(51275057);长江大学非常规油气湖北省协同创新基金资助项目(HBUOG20147);湖北省自然科学基金创新群体资助项目(2012FFA033)

摘　　要：针对旋转轴唇形密封在实际使用与装配过程中因存在加工误差与装配误差导致的密封唇与旋转轴贴合不紧密的问题,提出了1种带副唇的旋转轴唇形密封接触分析模型。该模型主要研究装配后密封与旋转轴的接触情况,并采用Mooney-Rivlin模型处理密封圈橡胶的应力应变关系。通过有限元分析软件对模型进行了计算,分析了该型密封圈装配后的不同压缩量情况下密封与旋转轴的接触应力。研究结果表明,随着压缩量的增大,密封圈主唇接触应力随之增大,当压缩量达到0.7mm时副唇与旋转轴接触,达到阻止外部灰尘进入的理想工作状态,继续增大压缩量时,主唇接触应力随压缩量的增加幅度有所减缓。因此使用此种密封圈时应保证装配后密封圈的压缩量在0.7mm以上。In order to solve the no-touch problem of rotary shaft and sealing lip caused by processing error and assembling error in practical use and assembly process. A new sealing contact analysis model which consider the deputy lip was put forward. This model mainly studies contact situation after assembly and use Mooney-Rivlin model to deal with the stress-strain relationship of seal rubber. The model was calculated with finite element analysis software and contact stress of lip seal in different compression was analyzed. The research results show that with the increase of compression distance, the lip contact stress increase. When compression distance increase to 0. 7 mm, the deputy lip contact the rotary shaft and reaches its ideal working state to prevent the dust from outside. If continues to increase the compression distance, the main lip contact stress will increase with a slow rate. As a result, when using this kind of sealing ring we should guarantee the compression distance is large than that after assembly.

关 键 词：密封技术 唇形密封 接触分析 接触应力 

分 类 号：TH136[机械工程—机械制造及自动化]