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VACUUM ›› 2024, Vol. 61 ›› Issue (6): 79-84.doi: 10.13385/j.cnki.vacuum.2024.06.14

• Vacuum Metallurgy and Thermal Engineering • Previous Articles     Next Articles

Research Status of MHD Sealing Technology in Vacuum Heat Treatment Equipment Based on Superconducting Coils

HUANG Zhi-qiang1, WANG Zhen-hong2, LI Xin-ke1, GAO Yuan1, SU Ning1, CHEN Ding1, CHE En-lin1, DAI Yu-bo1, MO Fan1   

  1. 1. Shenyang Vacuum Technology Research Institute Co., Ltd., Shenyang 110042, China;
    2. China Muclear Power Engineering Co., Ltd., Zhengzhou 450052, China
  • Received:2023-09-20 Online:2024-11-25 Published:2024-11-29

Abstract: Magnetic fluid sealing technology has natural advantages such as no friction, no pollution and long life, it has broad application prospects in vacuum sealing. Combining with the practical engineering application, the principle and characteristics of magnetic fluid seal, the research status and products of MHD sealing technology at home and abroad, and the application of magnetic fluid sealing in vacuum equipment are described. The development status of the heat treatment equipment and technology of superconducting coils and the defects of existing magnetic fluid sealing structures in the sealing of superconducting coils vacuum heat treatment furnace are introduced, and a new type of water-cooled magnetic fluid sealing device for vacuum heat treatment furnace was proposed. This device can achieve gapless sealing and only enough cooling water is needed to ensure thermal balance, which can effectively reduce the cost.

Key words: superconducting coil, vacuum, magnetic fluid, seal

CLC Number:  TH162;TB42

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