文献类型：期刊文献

中文题名：组合密封圈在压力脉动下密封性能分析

英文题名：Analysis of Sealing Performance of Combined Seal Ring under Pressure Pulsation

作者：黄雪值 周知进 邹书航 潘建林

第一作者：黄雪值

机构：[1]广西科技大学机械与汽车工程学院,柳州545616;[2]贵州理工学院工程训练中心,贵阳550003

第一机构：广西科技大学机械与汽车工程学院,柳州545616

年份：2025

期号：8

起止页码：133-138

中文期刊名：组合机床与自动化加工技术

外文期刊名：Modular Machine Tool & Automatic Manufacturing Technique

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金项目(51479073);贵州理工学院高层次人才启动项目(XJGC20190926)。

语种：中文

中文关键词：组合密封圈;压力脉动;流固耦合;密封性能

外文关键词：combined seal ring;pressure pulsation;fluid-structure coupling;sealing performance

摘要：组合密封圈是液压系统安全运行的关键,在压力脉动等复杂工况下,不仅会引起油液泄漏,还可能导致机械部件的疲劳损伤。为研究组合密封圈在35 MPa压力脉动下的密封性能,利用ANSYS Workbench中建立结构模型及确定相关材料本构模型参数,结合UDF技术于Fluent中加载压力脉动函数,最后通过流固耦合分析方法系统探讨压力脉动对密封性能的影响。研究结果表明,组合密封圈在35 MPa压力脉动下能够满足密封要求。其所受应力变化规律与流体压力脉动变化一致,每周期应力与变形均会出现两次波峰。并且越接近组合密封圈外表面,所受应力与变形越大,其中最大应力和变形均集中组合密封圈与活塞杆接触处。同时经对比分析发现,流固耦合效应不可忽视,组合密封圈在双向流固耦合下应力与变形相对于无流固耦合和单向流固耦合作用下更为真实。
The combination seal is the key to the safe operation of the hydraulic system,which will not only cause oil leakage but also fatigue damage of mechanical components under complex working conditions such as pressure pulsation.In order to study the sealing performance of the combined seal under 35 MPa pressure pulsation,ANSYS Workbench is used to establish the structural model and determine the parameters of the relevant material constitutive model,combined with the UDF technology in Fluent to load the pressure pulsation function,and finally through the fluid-solid coupling analysis to systematically explore the effect of pressure pulsation on the sealing performance.Research results show that:the combination of sealing ring in 35 MPa pressure pulsation can meet the sealing requirements.The change rule of stress and fluid pressure pulsation changes consistent with each cycle of stress and deformation will appear twice the peak.And the closer to the combination of sealing ring outer surface,the greater the stress and deformation,the maximum stress and deformation are concentrated combination of sealing ring and piston rod contact.At the same time,after comparative analysis,it is found that the effect of fluid-solid coupling cannot be ignored,and the stress and deformation of the combined sealing ring under two-way fluid-solid coupling is more real than that under no fluid-solid coupling and one-way fluid-solid coupling.