Research on magnetic fluid guaranteed combined sealing of high-volume fan

Feifei Xing; Ruican Hao; Jun Ji

doi:10.1117/12.2682038

16 June 2023 Research on magnetic fluid guaranteed combined sealing of high-volume fan

Feifei Xing, Ruican Hao, Jun Ji

Proceedings Volume 12639, Third International Conference on Mechanical Design and Simulation (MDS 2023); 1263929 (2023) https://doi.org/10.1117/12.2682038
Event: Third International Conference on Mechanical Design and Simulation (MDS 2023), 2023, Xi'an, China

Abstract

In order to solve the sealing problem of the cooling and evaporating medium of the large air volume fan in the large ship equipment, a five-stage, nine-tooth, large-gap magnetic fluid and magnetic grease combined rotary sealing device is designed, which is suitable for the environment with high rolling and high corrosion of large ships. Through the theoretical derivation of the pressure resistance formula and the Ansys finite element analysis, it is found that the pressure resistance of the seal increases with the increase of the saturation magnetization of the magnetic fluid, the yield stress of the magnetic grease and the magnetic field gradient in the seal gap. On the sealing test bench, the sealing pressure test was carried out on the device. When the maximum clearance is 0.7 mm, the single-stage pressure resistance capacity can still reach 20 KPa, and the sealing capacity remains stable with the increase of rotating speed. Theoretical and experimental results show that the design is suitable for large clearance sealing of high-power motors or other high vibration equipment in corrosive environment.

Citation Download Citation

Feifei Xing, Ruican Hao, and Jun Ji "Research on magnetic fluid guaranteed combined sealing of high-volume fan", Proc. SPIE 12639, Third International Conference on Mechanical Design and Simulation (MDS 2023), 1263929 (16 June 2023); https://doi.org/10.1117/12.2682038

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