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논문 기본 정보

자료유형
학술저널
저자정보
Fang Yuan (Beijing Jiaotong University) Siqi Wang (Beijing Jiaotong University) Decai Li (Beijing Jiaotong University) Long Che (Beijing Jiaotong University)
저널정보
한국자기학회 Journal of Magnetics Journal of Magnetics Vol.27 No.1
발행연도
2022.3
수록면
79 - 87 (9page)
DOI
10.4283/JMAG.2022.27.1.079

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초록· 키워드

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Considering various unstable factors when the large-diameter spindle operates at a high speed, such as eccentricity, centrifugal force, etc., the ordinary ferrofluid seal structures will show poor sealing performance. This paper proposes an axial-radial bidirectional ferrofluid seal structure with radial oblique teeth to improve the sealing performance. The pressure resistance of the radial ferrofluid seal structure in the magnetic circuit is theoretically analyzed. The magnetic flux distribution characteristic in the gap of the oblique teeth is studied by magnetic field simulation. According to the analysis results of the magnetic induction intensity, to obtain the larger theoretical pressure resistance, the optimal angle of oblique teeth is 77.87°, 64.28° and 62.81° under the radial seal structure with different gaps of 0.1 mm, 0.15 mm and 0.2 mm, respectively. In addition, simulation analysis is carried out to obtain the fluid pressure and velocity distribution of the radial ferrofluid seal structure with different oblique teeth angles. When the oblique teeth angle is small, the pressure drops and gas flow speeds in the ferrofluid area are all lower, and the pressure resistance is higher.

목차

1. Introduction
2. Axial-radial Bidirectional Ferrofluid Seal Structure
3. Theory Analysis of the Ferrofluid Seal
4. Effect of Oblique Teeth Angle on the Sealing Performance
5. Fluid Analysis of Radial Ferrofluid Seal
6. Conclusions
References

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