Kalsi密封函关键结构参数设计  

Design on Key Structural Parameters of Kalsi Seal Gland

作　　者：王丹[1] 张彦廷[1,2] 陈国明[1] 许志倩[1] 

机构地区：[1]中国石油大学(华东)机电工程学院,山东青岛266580 [2]浙江大学流体动力与机电系统国家重点实验室,浙江杭州310058

出　　处：《润滑与密封》2012年第8期89-94,共6页Lubrication Engineering

基　　金：流体动力及控制国家重点实验室开放基金资助项目(GZKF-201025)

摘　　要：采用ABAQUS有限元软件建立Kalsi密封模型,分析Kalsi密封函关键结构参数如挤出间隙倒角、挤出间隙高度、预压缩率及粗糙度对密封性能的影响。结果表明:挤出间隙倒角越大,密封圈的内应力越小,在满足实际工况条件下,尽量选择较大的挤出间隙倒角;密封函应选用小的挤出间隙高度,当轴的工况条件比较差时,挤出间隙高度需适当增加;密封函径向高度决定了密封圈初装配时的压缩率,推荐压缩率在10%左右;密封函内表面在摩擦因数为临界值的5倍以上时,Kalsi密封会产生明显的应力集中,加剧密封圈损坏。The Kalsi seal model was set up using the ABAQUS software,and the effect of the key structural parameters of Kalsi seal gland, such as different extrusion gap comer, extrusion gap height, precompression ratio and roughness on the sealing performance of Kalsi seal was studied. The results show that the inner stress becomes smaller with the increase of extrusion gap comer, so the larger extrusion gap comer should be chosen to meet the actual working conditions. The seal gland should choose with small extrusion gap height, and the gap height should be increased properly when the shaft work- ing condition is poor. The seal＇ s compression ratio is determined by its radial height at early assembly, and about 10% compression ratio recommended. When the friction ratio of the seal gland inner surface is five times larger than the critical value, significant stress concentration and increasing damage to the seal will be performed by the Kalsi seal.

关 键 词：Kalsi密封 流体动压润滑 密封函 结构参数 

分 类 号：TB42[一般工业技术]