Results 61 to 70 of about 2,950,179 (187)
Nihon Kikai Gakkai ronbunshu, 2018 In design of rotating machines, analysis of external force is important for stable rotating operation. The various external forces such as unbalance force, seal contact force and rotor dynamic fluid force effect on the rotor system, dynamic ...
Junya KATO +3 more
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MagnetochemistryThis study focuses on the reliability issue of magnetic fluid (MF) in the magnetic fluid sealing technology for the upper guide bearing (UGB) of hydro-generators and proposes selection schemes for MF suitable for different models of hydro-generators.
Mao Liao +6 more
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Thermoconvective flow velocity in a high-speed magnetofluid seal after it has stopped [PDF]
, 2012 Convective flow is investigated in the high-speed (linear velocity of the shaft seal is more than 1 m/s) magnetofluid shaft seal after it has been stopped. Magnetic fluid is preliminarily heated due to viscous friction in the moving seal. After the shaft
Krakov, M. S., Nikiforov, I. V.
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Sealing performance and engineering application of high-fluid slurry materials
矿业科学学报Existing sealing materials are limited due to their high price, curing shrinkage cracking, and insufficient compressive strength. This study therefore develops high-performance sealing materials to seal gas extraction boreholes and improve the life of ...
HAO Yuanwei +7 more
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HydrogenThe use of differential pressure energy for green hydrogen and ammonia comes with significant safety challenges. Two zero-emission technical schemes—one based on magnetic coupling transmission and another based on dual magnetic fluid seals—were proposed ...
Guohui Song +7 more
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MagnetochemistryMagnetic fluid sealing is a novel sealing technology wherein magnetic fluids play a pivotal role in the sealing process. The yield stress of the magnetic fluid directly affectsits sealing performance and is governed by multiple interdependent factors ...
Miaotian Zhang, Licong Jin, Yu Feng
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, 2020 In the paper, a motion of magnetic nanoparticles in a high gradient magnetic field and its correlation with the characteristics of the magnetic fluid seal are numerically studied.
Krakov, M. S., Nikiforov, I. V.
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Analysis and Design of a Double-Divert Spiral Groove Seal [PDF]
, 2007 This viewgraph presentation describes the design and analysis of a double spiral groove seal. The contents include: 1) Double Spiral Design Features; 2) Double Spiral Operational Features; 3) Mating Ring/Rotor Assembly; 4) Seal Ring Assembly; 5) Insert ...
Zheng, Xiaoqing, Berard, Gerald
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Current Status and Research Evolution of Magnetic Fluid Sealing Technology
Applied SciencesMagnetic fluid seals use magnetic field gradients generated by permanent magnets, pole pieces, and rotating shafts to confine ferrofluid in the sealing gap and form multiple liquid sealing rings. Compared with mechanical and labyrinth seals, they exhibit
Xueqin Wu +5 more
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, 1965 This invention relates to a fluid seal. More particularly, the invention relates to a fluid seal of a type adaptable to seal a rotating shafte under both static and dynamic ...
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