热效应对组合式液压动密封性能影响的研究  

Influence of the thermal effect on the sealing performance of the hydraulic combined dynamic seal

作　　者：董彦良[1] 钟凯超 Yan-liang DONG;Kai-chao ZHONG(School of Mechanical and Electrical Engineering,Harbin Institute of Technology,Harbin 150008,China)

机构地区：[1]哈尔滨工业大学机电工程学院,哈尔滨150008

出　　处：《机床与液压》2020年第18期9-15,共7页Machine Tool & Hydraulics

摘　　要：本文介绍一种热效应对液压组合式动密封的密封性能影响的数学模型。模型以电液摆动马达叶片处的动密封为例,以热弹流润滑理论为基础,除综合考虑诸如压力,马达线速度等因素外,重点研究热效应对液压动密封性能的影响。通过三维模型建立流场参数与密封性能之间的关系后进行了数值求解,并分析热效应对动密封性能的影响。A numerical model to evaluate the sealing performance of the hydraulic combined dynamic seal is introduced in this paper.Based on thermal elastohydrodynamic lubrication(TEHL)theory,the impact of thermal efect on dynamic sealing oil film is emphatically considered in this model besides pressure and linear velocity.The relations between the flow field parameters and the sealing performance are established under a three-dimensional model,then a numerical solution is reached and the result is analyzed.

关 键 词：组合式动密封 弹流润滑理论 温度场 密封性能 

分 类 号：TB42[一般工业技术]