超高压柱塞增压泵泛塞式组合密封的密封性能分析
Analysis of Sealing Performance of Ultra High Pressure Plunger Booster Pump with Plug Combination Sealing
薛原野 1彭佑多 1金永平 1刘广平1
作者信息
- 1. 湖南科技大学海洋矿产资源探采装备与安全技术国家地方联合工程实验室,湖南湘潭 411201;海洋资源探采技术与装备湖南省重点实验室,湖南湘潭 411201
- 折叠
摘要
为研究超高压柱塞增压泵泛塞式组合密封的密封性能,基于橡胶材料的Mooney-Rivlin本构关系,在Ansys Workbench中建立其组合密封的二维轴对称有限元模型,研究介质压力、预压缩量和摩擦因数对组合密封的密封性能影响,并对组合密封中O形圈的摩擦应力进行分析.结果表明:组合密封中的PTFE密封环及O形圈最大von Mises应力随着介质压力增大而增大,且内行程时两者高应力区域随着介质压力变化发生移动;介质压力一定时,预压缩量对外行程时的组合密封最大von Mises应力影响较大,von Mises应力随着预压缩量增加而增大;O形圈的摩擦因数对其摩擦应力影响最大,O形圈的摩擦应力随着其摩擦因数的增大而增大,在保证密封良好的前提下,降低预压缩量和摩擦因数,有利于延长超高压柱塞增压泵组合密封的工作寿命.
Abstract
In order to study the sealing properties of the ultra high pressure piston booster pump,based on Mooney-Riv-lin constitutive relationship of rubber material,a two-dimensional axisymmetric finite element model of the combined seal was established in Ansys Workbench.The effect of medium pressure,pre-compression and friction coefficient on the sealing performance of combination seal was studied.The friction stress of O-ring in combination seal was analyzed.The results show that the maximum von Mises stress of PTFE sealing ring and O-ring in the combination seal increases with the in-crease of medium pressure,and the high stress areas of both move with the change of medium pressure.When the medium pressure is certain,the pre-compression rate has a significant impact on the maximum von Mises stress of the combination seal during the external stroke,and the von Mises stress increases with the increase of the pre-compression rate.The fric-tion coefficient of O-ring has the greatest influence on its friction stress.The friction stress of O-ring increases with its fric-tion coefficient.While ensuring good sealing,reducing the pre-compression and friction coefficient is beneficial for exten-ding the working life of the combination seal of the ultra high pressure piston booster pump.
关键词
超高压柱塞增压泵/泛塞式组合密封/密封性能/有限元分析Key words
ultra high pressure plunger booster pump/plug combined seal/sealing performance/finite element analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据