西南交通大学学报 2006, 41(4) 415-418 DOI:     ISSN: 0258-2724 CN: 51-1277/U

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本文关键词相关文章
磁流体
密封
对齿聚磁结构
单侧极齿聚磁结构
间隙
有限元法
本文作者相关文章
李国斌
宋顺成
曹学军
杨润田
PubMed
Article by LI Guobin
Article by SONG Shuncheng
Article by CAO Xuejun
Article by YANG Runtian

两种大间隙磁流体密封聚磁结构性能的对比

李国斌1,2, 宋顺成1, 曹学军2, 杨润田2

1. 西南交通大学应用力学与工程系, 四川, 成都, 610031;
2. 兵器科学研究院宁波分院, 浙江, 宁波, 315103

摘要

用有限元方法分析了对齿聚磁结构的大间隙聚磁性能,并与同尺寸的单侧极齿聚磁结构比较.结果表明,对齿聚磁结构的磁通汇聚作用较好,在沿平行于密封间隙的方向上中间极齿间隙磁场的最大磁通密度差远大于单侧极齿聚磁结构,密封性能约为单侧极齿聚磁结构的2倍,而且有利于克服高速旋转时作用在磁流体的离心力,以适应高速转动轴类的磁流体密封.

关键词 磁流体   密封   对齿聚磁结构   单侧极齿聚磁结构   间隙   有限元法  

Comparison of Performances of Two Magnetic Fluid Sealing Devices for Large Gap Magnetic Fluid Sealing

LI Guobin1,2, SONG Shuncheng1, CAO Xuejun2, YANG Runtian2

1. Dept.of Appl.Mechanics and Eng., Southwest Jiaotong University, Chengdu 610031, China;
2. Ningbo Branch, Ordnance Science Institute of China, Ningbo 315103, China

Abstract:

The magnetic flux concentrating performances of a magnetic fluid sealing device with opposite-pole teeth for a large sealing gap were numerically investigated with FEM(finite element method) and compared with those of a traditional magnetic fluid sealing device with single-side pole teeth.The results show that the magnetic fluid sealing device with opposite-pole teeth yields a much better sealing effect than that with single side-pole teeth.Compared with the latter,the difference in maximum magnetic flux density of the former is greatly increased at the middle pole tooth along the sealing gap direction,and the sealing pressure is approximately doubled.Especially,it is helpful to overcome centrifugal forces produced by high speed rotation on magnetic fluid for application in sealing of high speed shaft.

Keywords: magnetic fluid   sealing   opposite-pole teeth   single-side pole teeth   gap   FEM  
收稿日期 2004-10-10 修回日期  网络版发布日期  
DOI:
基金项目:

浙江省宁波市青年博士基金资助项目

通讯作者:
作者简介: 李国斌(1968- ),男,高级工程师,博士研究生,研究方向为动态力学,E-mail:lgbswjtu2003@163.com

参考文献:
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[5] 赵国伟,池长青,王之珊.矩形齿磁流体密封装置的磁场计算[J].北京航空航天大学学报,2000,26(4):447-450.ZHAO Guowei,CHI Changqing,WHANG Zhishan.Magnetic field numerical calculation of rectangular poled magnetic fluid sealing device[J].Journal of Beijing University of Aeronautics and Astronautics,2000,26 (4):447-450.
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