唇口数量对弹簧蓄能密封性能的影响  

Influence of Lip Number on Performances of Spring Energy Storage Seals

作　　者：袁国海 王永红 高翔 房烨欣 金毅 卢文秀[2] 郭飞[2] YUAN Guohai;WANG Yonghong;GAO Xiang;FANG Yexin;JIN Yi;LU Wenxiu;GUO Fei(CNPC Research Institute of Engineering Technology,Beijing 102200,China;State Key Laboratory of Tribology in Advanced Equipment,Beijing 100084,China)

机构地区：[1]中国石油工程技术研究院,北京102200 [2]清华大学高端装备界面科学与技术全国重点实验室,北京100084

出　　处：《润滑与密封》2025年第4期159-167,共9页Lubrication Engineering

摘　　要：针对超高压石油井安全阀的使用工况,设计一款弹簧蓄能密封结构,采用有限元分析的方法分别研究介质压力为30~150 MPa工况下,密封夹套唇口数量对弹簧蓄能密封结构的影响规律;利用流固耦合数值仿真分析模型,求解不同介质压力下,不同唇口设计结构的泄漏量,并以泄漏量为密封性能的评价标准,对不同唇口数量的密封性能进行评判。结果表明:唇口数量越多,在高温高压工况下泄漏量的增长梯度越小,低介质压力下泄漏量值较大;对于150 MPa、200℃高温高压工况,双唇口结构为最佳的密封结构方案。Based on the operational conditions of safety valves in ultra-high-pressure oil wells,a spring-energized seal-ing structure was designed.The impact of varying lip numbers on the spring energy storage sealing structure was investiga-ted under medium-pressure conditions from 30 MPa to 150 MPa using finite element analysis method.A fluid-structure coupling numerical simulation analysis model was employed to determine the leakage rates of different lip structures under various pressures.The sealing performance of different lip numbers was evaluated using leakage rate as the performance in-dex.The results show that an increase in the number of lips results in a reduced leakage growth gradient under high-tem-perature and high-pressure conditions,whereas a higher leakage value is observed under lower medium pressures.Specific-ally,for high temperature and high pressure conditions of 150 MPa and 200℃C,the double lip structure is best sealing structure scheme.

关 键 词：弹簧蓄能密封 唇口数量 双唇口结构 泄漏量 密封性能 

分 类 号：TH136[机械工程—机械制造及自动化] TE931[石油与天然气工程—石油机械设备]