螺旋槽干气密封静环的变形分析  

Analysis of Deformation of Spiral Groove Dry Gas Seal Static Ring Based on ANSYS

作　　者：赵芳[1] 黄义仿[1] 张琪[1] 贾永磊 

机构地区：[1]兰州石化职业技术学院,甘肃兰州730060 [2]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《辽宁化工》2015年第8期969-971,共3页Liaoning Chemical Industry

基　　金：甘肃省高等学校基本科研业务费专项资金资助(甘财教[2010]176号)

摘　　要：在高压下运行的螺旋槽干气密封，静环端面将会产生较大的轴向位移，对3～5μm厚的气膜稳定性影响至关重要。应用ANSYS软件对螺旋槽干气密封静环建立有限元模型，进行力变形和热力耦合变形分析。研究结果表明：在力单独作用下，静环端面轴向变形随着半径呈近似线性变化，在内径处产生最大轴向压缩位移；热力耦合作用下，静环端面轴向变形随着半径呈非线性变化，同样在内径处产生最大轴向压缩位移。但在两种工况下，端面最大变形量都没有超过密封时气膜厚度，对气膜稳定性没有影响，所以对整个螺旋槽干气密封系统的密封性能没有影响。When the spiral groove dry gas seal operates under high pressure, the end-face of static ring which is significantly affected by force will generate a larger axial displacement, it has crucial effect the stability of the gas film of thickness 3～5μm. In this paper, ANSYS software was used to establish the finite element model of the static ring, mechanical and heat-mechanical coupling deformation analysis of static ring of the spiral groove dry gas seal was carried out. The results show that axial deformation of end-face of the static ring with radium is approximate linear variation, the maximum axial compression displacement generates in the intemal radium under the action of force; axial deformation of end-face of the static ring with radium is nonlinear variation, the maximum axial compression displacement generates in the internal radium under the action of heat-mechanical coupling. The biggest deformation of end-face does not exceed the film thickness under above two conditions; they have no effect on gas film stability. So they have no effect on scaling performance of whole spiral groove dry gas seal system.

关 键 词：螺旋槽 干气密封 ANSYS软件 热力耦合变形 

分 类 号：TH136[机械工程—机械制造及自动化]