摘要
采用有限元方法建立氟橡胶密封圈大变形三维仿真模型,研究润滑油泵矩形密封圈在螺栓装配过程及不同温度下的接触压力、填充率及压缩率对密封性能的影响。结果表明:密封圈的大变形分析能得到精确的密封区域接触压力,在-40℃低温条件下,润滑油泵往中间冷缩增大了接触区域的挤压,使接触压力增大,随着温度升高至120℃,润滑油泵受热膨胀使接触压力减少,各工况下的最大接触压力均大于油液内压(1.98MPa);随着温度上升,密封圈填充率逐渐增大,而不同温度下的密封圈填充率均小于85%;密封圈压缩率随温度的升高呈下降趋势,不同温度下的压缩率在13%~36%,填充率与压缩率均满足设计要求。
The three-dimensional simulation model of large deformation of fluororubber seal ring was established by finite element method to study the lube oil pump rectangular seal in the bolt assembly process and different temperature contact pressure,filling rate and compression rate on the impact of seal⁃ing performance.The results show that the large deformation analysis of the seal can get accurate contact pressure in the sealing area.And under the low temperature condition of−40℃,the lubricant pump cold shrinkage to the middle increases the extrusion of the contact area to make the contact pressure increase.As the temperature rises to 120℃,the lubricant pump thermal expansion reduces the contact pressure,the maximum contact pressure under each working condition is greater than the oil internal pressure of 1.98 MPa.As the temperature increases,the filling rate of the seal gradually increases,and the filling rate of the seal at different temperatures is less than 85%,while the compression rate of the seal de⁃creases,and the compression rate at different temperatures is in the range of 13%to 36%.The filling rate and compression rate meet the design requirements.
作者
龙婷
余明果
刘冠麟
蔡皓
LONG Ting;YU Mingguo;LIU Guanlin;CAI Hao(Hunan Oil Pump Co.,Ltd.,Hengdong 421400,Hunan,China;Hunan Industry Polytechnic,Changsha 410007,Hunan,China)
出处
《柴油机设计与制造》
2023年第4期8-12,共5页
Design and Manufacture of Diesel Engine
关键词
润滑油泵
密封圈
温度
接触压力
填充率
压缩率
lubricant pump
sealing ring
temperature
contact pressure
filling rate
compression rate
