基于流固耦合上游泵送机械密封的变形分析  

Deformation analysis of upstream pumping mechanical seals based on one-way fluid-solid coupling

作　　者：陈汇龙[1] 刘玉辉[1] 赵斌娟[1] 刘彤[1] 王强[1] 刘志斌[1] 

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2014年第1期25-28,共4页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51279067);江苏高校优势学科建设工程项目(苏财教[2011]8号)

摘　　要：采用Pro/E软件建立了密封动环三维几何模型,由Fluent软件模拟获得的液膜压力作为动环端面的边界条件之一导入Ansys Workbench进行单向流固耦合计算,在不同工况下对C石墨,SiC,WC和结构钢(Steel)4种材料进行了有限元对比分析.结果表明:最大变形发生在动环端面螺旋槽顶端,而最大应力发生在动环背面的密封台阶处;最大变形和最大应力几乎不受转速的影响,而受介质压力的影响比较明显,且随着介质压力的增大呈线性增加;4种材料中,C石墨的最大变形和最大应力都很大,不适合作动环材料,从密封环变形量角度考虑,而在满足其他要求的情况下,推荐优先选用SiC.Abstract ： The threedimensional geometric model of the rotating ring was established by Pro/E software. The liquid film pressure achieved from Fluent software was imported into Ansys Workbench as boundary condition of rotating ring for oneway fluidsolid coupling calculation. The comparison analysis of carbon graphite, SiC, WC and structural steel was carried out by finite element method under different operating conditions. The results show that the maximum deformation occurs at the end of spiral groove in the rota ting ring, while the maximum stress occurs on the back stairs of the moving ring seal. The maximum de formation and stress are almost not affected by the rotating speed, but influenced obviously by the media pressure with linear increasing trend. Carbongraphite is not suitable as moving ring material, and on condition that it meets other requirements, the SiC is proior material.

关 键 词：机械密封 单向流固耦合 上游泵送 最大变形 最大应力 

分 类 号：TH136[机械工程—机械制造及自动化]