高温高压弹簧蓄能密封结构设计与密封性能分析

Structural Design and Sealing Performance Analysis of High Temperature and High Pressure Spring Energy Storage Sealing Ring

针对高温(200℃)高压(150 MPa)工况,设计了一种双向非弹性密封组结构方案,并通过对弹簧进行降维处理,建立弹簧蓄能密封组的轴对称分析模型,分析了温度和介质压力分别对所设计密封组密封性能的影响规律。结果表明:高温会使密封夹套的峰值接触压力降低,但是会增加密封夹套的接触宽度,弥补材料变软对密封性能的影响;高压会使密封夹套双唇口之间形成极高的峰值压力,有利于实现密封。

This article designs a bidirectional non elastic sealing group structure scheme for high temperature(200℃)and high pressure(150 MPa)working conditions.By reducing the dimension of the spring,an axisymmetric analysis model of the spring energy storage sealing group is established,and the influence of temperature and medium pressure on the sealing performance of the designed sealing group is analyzed.The results show that high temperature can reduce the peak contact pressure of the sealing jacket,but increase the contact width of the sealing jacket to compensate for the impact of material softening on sealing performance;High pressure will create extremely high peak pressure between the double lips of the sealing jacket,which is beneficial for achieving sealing.