磁性液体密封泄漏通道的可视化研究

doi:10.3901/JME.260019

机械工程学报 ›› 2026, Vol. 62 ›› Issue (1): 262-271.doi: 10.3901/JME.260019

• 摩擦学 • 上一篇

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磁性液体密封泄漏通道的可视化研究

陈诺, 李德才

清华大学高端装备界面科学与技术全国重点实验室北京 100084

收稿日期:2025-01-17 修回日期:2025-10-10 发布日期:2026-02-13
作者简介:陈诺，男，1997年出生，博士研究生。主要研究方向为磁性液体密封。E-mail：chenn19@mails.tsinghua.edu.cn
李德才(通信作者)，男，1965年出生，教授，博士研究生导师。主要研究方向为机电液磁一体化的理论及应用。E-mail：lidecai@tsinghua.mail.edu.cn
基金资助:
国家自然科学基金资助项目(51927810)。

Visualization Research on Leakage Path of Magnetic Fluid Seal

CHEN Nuo, LI Decai

State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084

Received:2025-01-17 Revised:2025-10-10 Published:2026-02-13

摘要/Abstract

摘要： 磁性液体密封作为一种新型密封方式，具有零泄漏、高可靠性、寿命长等优点，然而由于磁性液体密封结构的特殊性，密封间隙内磁性液体在失效过程中产生的泄漏通道难以观测。针对此问题，理论推导了毛细管中磁性液体密封破裂时泄漏通道的位置与形状，建立了毛细管中的磁性液体密封实验系统，设计了泄漏通道的可视化光路系统，通过实验证明了通道的位置出现在毛细管的几何中心处，且其横截面的几何形状为长轴平行于磁场方向的类椭圆形，进一步拓展了磁性液体密封的机理研究内容。

关键词: 磁性液体, 密封, 泄漏通道, 密封可视化

Abstract: Magnetic fluid seal is a new type of sealing method that offer several advantages, including “zero” leakage, high reliability, and long life. However, due to the particular structure of magnetic fluid seals, it can be difficult to observe the leakage path generated in in the sealing gap during the sealing failure process. And this results in incomplete research on the mechanism of magnetic fluid seal. To conduct a visualization research on leakage path of magnetic fluid seal, the location and shape of the leakage path resulting from a ruptured magnetic fluid seal in a capillary tube can be determined through theoretical derivation. A visual structure is designed based on the magnetic fluid seal experimental system in a capillary tube and relative experiments are conducted to confirm this theory. The results showed that the leakage path is situated at the geometric center of the capillary tube. The cross-section of the path is similar to an ellipse, with its long axis parallel to the direction of the magnetic fields.

Key words: magnetic fluid, seal, leakage path, visualization of seal

中图分类号:

TG156

陈诺, 李德才. 磁性液体密封泄漏通道的可视化研究[J]. 机械工程学报, 2026, 62(1): 262-271.

CHEN Nuo, LI Decai. Visualization Research on Leakage Path of Magnetic Fluid Seal[J]. Journal of Mechanical Engineering, 2026, 62(1): 262-271.

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磁性液体密封泄漏通道的可视化研究

Visualization Research on Leakage Path of Magnetic Fluid Seal

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