Study on Flowing State of Magnetic Fluid in Seal Gap of Reciprocating Shaft
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摘要: 为了解决往复轴磁性液体密封中存在的问题,研究了往复轴以不同速度和行程运动时,密封间隙内磁性液体的流动状态,重点研究了往复轴密封间隙内磁性液体流动机理、往复轴运动所带走磁性液体的量、往复轴磁性液体密封的失效原因及往复轴磁性液体密封新结构的设计.实践表明所设计的新结构在某些应用场合是非常有效的.Abstract: In order to solve the problems that exit in the magnetic fluid sealing of reciprocating shaft, the magnetic fluid flow in the seal gap was studied when the reciprocating shaft moves with different velocities and strokes. The follwing were focused on the regular pattern of such flow, the loss quantity of magnetic fluid caused by the reciprocating motion shaft, the failure reasons of this magnetic fluid sealing and the design of a new structure for the magnetic fluid sealing of reciprocating shaft. The application indicates that the new structure is very effective in some occasions.
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Key words:
- sealing /
- reciprocating mechanisms /
- magnetism /
- fluid
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[1] Goldowsky M.New methods for sealing, filtering and lubrication with magnetic fluids[J]. IEEE Transactions on Magnetics, 1980, 16(2):382~386 [2] Mijake S, Takakashi S. Characteristics of a ferromagnetic linear vacuum seal[J]. ASLE Transactions, 28(3):358~363 [3] Evsion S I, Sokolov N A, Stradomskr R I, et al. Development of magnetic fluid reciprocating motion seals[J]. Journal of Magnetism and Magnetic Materials, 1990,(85):253~256 [4] 李德才. 磁性液体的理论及应用. 北京:北方交通大学机械系,1996 Li Decai. Theory and application of the magnetic fluid. Beijing:Dept of Mechanical Engineering, Northern Jiaotong University, 1996(in Chinese) [5] Li Decai, Wang Qiang. An experimental facility for studying of magnetic fluid motion mechanism in the magnetic fluid seal gap of reciprocating shaft. International Conference of Magnetic Fluid (ICMF9). Bremen, 2001 -
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