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The Physics of Fluids
To investigate the sealing mechanism and performance of the symmetric magnetic fluid seal (SMFS) with occlusal pole teeth (OPT), an experimental device was designed.
Xuankai Dou +3 more
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To investigate the sealing mechanism and performance of the symmetric magnetic fluid seal (SMFS) with occlusal pole teeth (OPT), an experimental device was designed.
Xuankai Dou +3 more
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Numerical and experimental study of the embedded magnetic fluid seal with a small gap
Physica Scripta, 2021To improve the pressure capability of the ordinary magnetic fluid (MF) seal (MFS) with a small gap, a device of the embedded MFS is designed according to the theory of embedded MFS. The magnetic field distribution in the seal gaps of the embedded MFS was
Xiaolong Yang, Ying Guan, Yinyan Huang
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Dynamic sealing with magnetic fluids
Wear, 1989Abstract Ferrofluidic seals are the most advanced application of ferromagnetic fluids. They are used for sealing gases at pressures up to 3.5 MPa and vacuum sealing (up to 10−8 Torr) at shaft speeds over 30 000 rev min−1. This paper presents the design and operating principles of a ferromagnetic seal.
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Dynamic Sealing with Magnetic Fluids
A S L E Transactions, 1975If a lip seal could use a liquid lip, the resulting perfect conformity to the rotating and stationary surfaces would negate the effects of surface finish and mechanical run-out. Magnetic fluids, called ferrofluids, make this type of seal possible and practical.
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Magnetic Fluid Seals for Special Applications
A S L E Transactions, 1980Three magnetic fluid seals custom engineered to meet specific application objectives are discussed. These seals are: a belt edge seal, a large diameter seal and a centrifugal seal. Extensive experimental data were acquired on the first two seals to determine their performance characteristics. Some of these test results are compared with the theoretical
K. Raj, P. Stahl, W. Bottenberg
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The Influence of the Temperature Rise on the Sealing Performance of the Rotating Magnetic Fluid Seal
IEEE transactions on magnetics, 2020The magnetic fluid seal is widely used in the high-speed mechanical devices. Also, the temperature of the seal increases with the viscous heating under the high shearing rate in the magnetic fluid. However, the influence of the temperature on the sealing
Yibiao Chen +4 more
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Non-uniform Distribution of Magnetic Fluid in Multistage Magnetic Fluid Seals
Journal of Magnetics, 2017Magnetic fluid, a new type of magnetic material, is a colloidal liquid constituted of nano-scale ferromagnetic particles suspended in carrier fluid. Magnetic fluid sealing is one of the most successful applications of magnetic fluid. As a new type of seal offering the advantages of no leakage, long life and high reliability, the magnetic fluid seal has
Wang Zhongzhong, Li Decai, Zhou Jing
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Sealing Performance of a Magnetic Fluid Seal for Rotary Blood Pumps
Artificial Organs, 2009AbstractA magnetic fluid (MF) for a rotary blood pump seal enables mechanical contact‐free rotation of the shaft and, hence, has excellent durability. The performance of a MF seal, however, has been reported to decrease in liquids. We have developed a MF seal that has a “shield” mechanism and a new MF with a higher magnetization of 47.9 kA/m.
Yoshinori, Mitamura +6 more
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A Study of Magnetic Fluid Seals for Blood Sealing
The proceedings of the JSME annual meeting, 2002Magnetic fluid seals are used in a wide variety of gas and dust sealing applications. However, it is difficult to seal for liquid because of its characteristic. This study will be a basic guide for a magnetic fluid seal for liquid, especially for blood to be practically used in medical instruments such as rotary blood pumps by clarifying its seal ...
Jun TOMIOKA +2 more
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Dynamics of high-speed magnetic fluids seals
Journal of Magnetism and Magnetic Materials, 1983Abstract It is shown experimentally that with a shaft rotation speed above 20 m/s the characteristics of the conventional magnetic-fluid seal worsen and at 70–80 m/s this structure fails to operate. A use of the constructions with the magnetic focussing structure on a shaft and external rotating working surface improves the high-speed magnetic-fluid ...
V.K. Rakhuba +2 more
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