60度锥超高压水介质管接头密封结构分析  

Sealing Structure Analysis of 60 Degree Cone Ultra-high Pressure Water Medium Pipe Joint

作　　者：袁清云 YUAN Qing-yun(School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050

出　　处：《液压气动与密封》2022年第5期94-97,共4页Hydraulics Pneumatics & Seals

基　　金：国家重点研发计划(2016YFC0304801)。

摘　　要：针对60度锥超高压水介质管接头密封结构,使用COMSOL Multiphysics软件对其进行力学仿真,得到了在受到5000 N预紧力时和受到110 MPa载荷时60度锥管结构密封结构的应力集中点和应力、应变值,通过对比接触应力与介质载荷得出此密封方式能够在110 MPa时实现密封。分析发现:受到预紧力后,连接管道和管接头中的应力集中点分别位于连接管道的前端和管接头锥面外圆,受到110 MPa载荷后,连接管道和管接头中的应力集中于连接管道与管接头锥面配合外圆处。在介质载荷的作用下,连接管道受预紧力产生的形变会得到补偿,锥面连接处形变得到了一定的恢复,降低了密封效果。This paper used COMSOL Multiphysics software to carry out mechanical simulation on the sealing structure of 60 degree conicalultra-high pressure water medium pipe joint. The stress concentration point and stress and strain values of the sealing structure of 60 degreeconical pipe structure were obtained when subjected to pretightening force and 110 MPa load. By comparing the contact stress with the mediumload, it is concluded that this sealing method can seal at 110 MPa. It is found that the maximum stress is located at the front end of the pipeand the outer circle of the conical surface of the pipe joint respectively under the preloading force and the loading medium load. Under theaction of medium load, the displacement caused by the preload of the connecting pipe will be compensated, and the deformation of the conicaljoint will be restored to a certain extent, which reduces the sealing effect.

关 键 词：超高压管接头 60度锥面密封 水介质密封 分析 

分 类 号：TB42[一般工业技术]