高水压环境下盾构主轴承唇形密封圈密封性能分析  

Sealing Performance Analysis of Lip Seals in Main Bearing of Shield Machine Under High Pressure Environment

作　　者：陈桥 周建军 李凤远 王助锋 

机构地区：[1]盾构及掘进技术国家重点实验室,河南郑州450001

出　　处：《液压与气动》2015年第3期27-31,共5页Chinese Hydraulics & Pneumatics

基　　金：国家高技术研究发展计划(863计划)(2012AA041802);洛阳市应用技术研究与开发资金项目(1301065A)

摘　　要：在分析盾构主轴承密封结构及功能的基础上,结合琼州海峡跨海隧道工程,建立了主轴承密封圈仿真分析模型,分析不同压力差下,唇形密封圈的保持架结构,对主轴承密封圈受力情况和密封性能的影响。研究结果表明:有楔形突起的保持架对密封圈的受力情况及密封性能具有较大影响。该结构有效改善了密封圈的力学结构,提高了其结构的稳定性和密封性能的稳定性,在保证良好密封性能的前提下,使密封圈有较小的变形和等效应力。Based on the analysis of structure and function for seals used in the main bearing of shield machine, a main bearing seal simulation model is established to analyze the influence of the lip seal retainer＇ s structure on both the lip seal＇ s force status and the sealing performance under different pressure differentials, for solving problems in the Qiongzhou Strait tunnel project. The results show that a wedge-shaped projection on the retainer has a great in- fluence on the lip seal＇ s force status and the sealing performance. This structure can improve the mechanical struc- ture of seal ring effectively, deformation and equivalent enhance the stability of structure and sealing performance, make the seal ring have less stress under the premise of goodsealing performance.

关 键 词：盾构主轴承 唇形密封圈 密封性能 仿真分析 

分 类 号：TH137[机械工程—机械制造及自动化]