基于快开式高压容器的O形密封性能分析  

Analysis of O-ring Seal for Quick Opening High Pressure Vessel

作　　者：李学斌 冉菲[2] 王成刚[2] 何凡[2] LI Xue-bin;RAN Fei;WANG Cheng-gang;HE Fan(Hubei Electric Power Equipment Co.,Ltd.,Wuhan430060,China;Mechanical and Electrical Engineering,Wuhan Institute of Technology,Wuhan430205,China)

机构地区：[1]湖北省电力装备有限公司,湖北武汉430060 [2]武汉工程大学机电工程学院,湖北武汉430205

出　　处：《液压气动与密封》2018年第8期75-79,共5页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金项目(50976080)

摘　　要：该文通过Workbench对O形圈预密封与高压密封过程进行了非线性仿真,研究了O形圈压缩率对密封性能的影响,得出不同压缩率下的O形圈应力与接触压力分布情况,针对快开式高压密封结构的需要,以设备能够承受高压反复开启不损伤或轻微损伤密封圈为原则,给出了O形圈压缩率更为严格的选取范围15%～20%;在此基础之上分析了弧形聚四氟乙烯单挡圈与双挡圈组合密封结构,结果显示单个挡圈有效抵抗密封圈内部应力集中,双挡圈提供了更大的密封接触压力,由此双挡圈结构更适合快开式高压密封。In this paper,nonlinear simulation of O-ring pre seal and high pressure sealing process is carried out by workbench software,The influence of compression ratio of O-ring on sealing performance was studied,The stress and contact pressure distribution of O-ring under different compression rates were obtained.In view of the need of quick opening high pressure seal structure,the selection range of O-ring compression ratio is more strict,with the principle that the equipment can withstand high pressure and open repeatedly without damaging or slightly damaging the sealing ring.15%~20%;Based on the analysis of the single and double curved PTFE ring seal structure,results showed that the single ring effective resistance sealing ring internal stress concentration,the double ring provides greater sealing contact pressure,so double ring structure is more suitable for quick opening pressure sealing.

关 键 词：高压容器 O形圈 有限元分析 快开 

分 类 号：TB42[一般工业技术]