Analysis on Seal Capacity of Magnetic Fluid Seal Using Ring Magnet

IF 0.6 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
Jiawei Liu, Decai Li
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引用次数: 1

Abstract

Magnetic fluid seal is one of the most mature applications of magnetic fluid. When the shaft has a large radial runout, the classical pole piece is easily damaged. Due to its small size, the commonly used pole piece structure harbors problems like poor seal performance under a large gap and poor processability. By exploring the distribution law of the magnetic field on the magnet’s surface, we provided theoretical support for the magnetic fluid seal using axially-magnetized ring magnets. New structures for the magnetic fluid seal using axially-mag-netized slotted ring magnets and the magnetic fluid seal using radially-magnetized ring magnets were proposed. Then, comparisons were made between the classical magnetic fluid seal and the magnetic fluid seal using ring magnets. The results revealed that the magnetic fluid seal using axially-magnetized slotted ring magnets and the magnetic fluid seal using radially-magnetized ring magnets exhibited a certain seal capacity, which could replace the classical magnetic fluid seal structure.
环形磁铁磁性流体密封的密封能力分析
磁性流体密封是磁性流体最成熟的应用之一。当轴具有较大径向跳动时,经典极片容易损坏。常用的极片结构由于体积小,存在大间隙下密封性能差、可加工性差等问题。通过对磁体表面磁场分布规律的探索,为采用轴向磁化环形磁体进行磁性流体密封提供了理论支持。提出了轴向磁化开槽环形磁体和径向磁化环形磁体的新型磁性流体密封结构。然后,对经典磁流体密封与环形磁体磁流体密封进行了比较。结果表明:采用轴向磁化开槽环形磁体的磁性流体密封和采用径向磁化环形磁体的磁性流体密封具有一定的密封能力,可以替代传统的磁性流体密封结构。
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来源期刊
Journal of Magnetics
Journal of Magnetics MATERIALS SCIENCE, MULTIDISCIPLINARY-PHYSICS, APPLIED
CiteScore
1.00
自引率
20.00%
发文量
44
审稿时长
2.3 months
期刊介绍: The JOURNAL OF MAGNETICS provides a forum for the discussion of original papers covering the magnetic theory, magnetic materials and their properties, magnetic recording materials and technology, spin electronics, and measurements and applications. The journal covers research papers, review letters, and notes.
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