2种结构参数旋转轴唇形油封的密封性能研究  

Research on Sealing Performance of the Rotary Lip Seal with Two Structure Parameters

作　　者：陈建垒 张付英[1,2] 宋娜娜 段晶莹 CHEN Jian-lei;ZHANG Fu-ying;SONG Na-na;DUAN Jing-ying(Tianjin University of Science&Technology,Tianjin 300222,China;Key Laboratory of integrated design and on line monitoring of light industry and food engineering machinery and equipment in Tianjin,Tianjin 300222,China)

机构地区：[1]天津科技大学,天津300222 [2]天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津300222

出　　处：《流体机械》2018年第9期31-37,共7页Fluid Machinery

基　　金：天津市自然科学基金重点项目(17JCZDJC38800)

摘　　要：应用有限元分析软件ABAQUS,建立了唇形油封的有限元模型,分析了唇口接触压力对油封密封性能的影响。基于有限元分析结果,集成数值计算理论方法,研究了油封运行时,轴转速对温升、泵汲率、摩擦扭矩及密封性能的影响及规律。结果表明:优化前和优化后2种结构参数的油封模型,其各密封性能指标均满足密封要求;且在分析的工作参数范围内,优化后油封随转速的增加,温度增加的幅度和摩擦扭矩明显低于优化前油封,而泵汲率比优化前有显著提高,表明优化后油封具有较佳的密封性能。The finite element model of lip seal was built using the finite element analysis software ABAQUS,and the influence of the lip contact pressure on the sealing performance of oil seals was analyzed.Based on the results of finite element analysis and by integrating the theoretical methods of numerical calculation,the effects and rules of the dynamic rotational speed on temperature rise,pumping rate,friction torque and sealing performance were studied.The results show that,for the oil seal models with two structural parameters before and after optimization,all its performance indexes satisfy the sealing requirements;and in the range of the analyzed working parameters,with the increase of the rotational speed of the optimized oil seal,the amplitude of the temperature increase and the friction torque are significantly lower than those before optimization,and the pumping rate increases significantly than before optimization,which shows that the optimized oil seal has better sealing performance.

关 键 词：旋转轴唇形油封 唇口接触压力 温度分布 泵汲率 摩擦扭矩 

分 类 号：TH136[机械工程—机械制造及自动化] TH117.2