Performance of Magnetic Fluid and Back Blade Combined Seal for Sealing Water

When sealing liquids with magnetic fluid, the interfacial stability problem caused by the interaction between the magnetic fluid and the sealed liquid leads to poor sealing performance. Centrifugal force is generated by the rotation of the sealed liquid in the back blade seal, which forms back press...

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Bibliographic Details
Published inMagnetochemistry Vol. 9; no. 2; p. 38
Main Authors Wang, Hujun, Gao, Zhongquan, He, Xinzhi, Li, Zhenkun, Zhao, Jinqiu, Luo, Zhuo, Wei, Yaqun
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.01.2023
Subjects
back blade seal
Centrifugal force
combined seal
Fluids
Interface stability
Liquids
Magnetic fields
magnetic fluid seal
Magnetic fluids
Properties
Research methodology
Rotating liquids
Sealing
sealing performance
Seals (Closures)
Velocity
China
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Summary:When sealing liquids with magnetic fluid, the interfacial stability problem caused by the interaction between the magnetic fluid and the sealed liquid leads to poor sealing performance. Centrifugal force is generated by the rotation of the sealed liquid in the back blade seal, which forms back pressure to reduce the load of the seal or prevents the sealed liquid from leaking. To reduce the influence of the shaft speed on the sealing performance, a combined magnetic fluid and back blade seal was designed for sealing liquids and a combined seal experiment stand was set up. Theoretical and experimental studies were carried out. The results showed that under a higher shaft speed, the combined seal structure had better sealing performance in which the back blade seal played the main role; the magnetic fluid seal played a major role in stopping and lowering the speed to prevent seal leakage. The combined seal could run stably under different shaft speeds.
ISSN:2312-7481
2312-7481
DOI:10.3390/magnetochemistry9020038