往复式密封件泵汲率及生热量研究  

Study of Heat Generating and Pumping Effect of Reciprocating Seals

作　　者：许曼曼[1] 赵良举[1] 杜长春 李云飞 康帅[1] 唐陈[1] 

机构地区：[1]重庆大学动力工程学院,重庆400044 [2]重庆杜克高压密封件有限公司,重庆400039 [3]重庆市橡塑密封企业工程技术中心,重庆400039

出　　处：《润滑与密封》2014年第9期57-62,共6页Lubrication Engineering

基　　金：重庆市自然科学基金项目(CSTC2007BB6184);中央高校基本科研业务费项目(CDJZR11140002)

摘　　要：利用有限元软件建立往复式密封件模型,模拟不同劲度系数下密封件内径的变化,研究弹簧劲度系数、过盈量以及往复速度对密封件密封性能的影响,利用流体动力学计算泵汲率和生热量,利用生热量模拟橡胶温度场的变化。结果表明:簧后内径与劲度系数有着近似线性的关系;随着过盈量的增加,内行程油膜厚度增加,外行程油膜厚几乎不变,导致泵汲率增大,并且生热量随着过盈量的增加而增加,唇口温度随之增加;随着往复速度的增加,密封件的泵汲率及生热量都增加。A model of reciprocating seal was built by finite element analysis software.The variation of the seal inner di-ameter under different spring stiffness was simulated,the effects of spring stiffness coefficient,interference fit and rod speed on seal sealing performance were studied,and the heat generation and pumping rate were calculated.The result in-dicates that,there is a liner relationship between the spring stiffness coefficient and the seal inner diameter;As the inter-ference fit increases,the oil film thickness is increased during the instroke,and it almost remains the same during the out-stroke,which leads the increase of the pumping rate;The heat generation is increased and the temperature in the seal lip is also increased along the increase of interference fit;Both the heat generation and pumping rate are increased as the rod speed increases.

关 键 词：往复式密封件 过盈量 泵汲效应 

分 类 号：TB42[一般工业技术]