ISSN   1004-0595

CN  62-1095/O4

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磁流体密封水介质的自修复研究[J]. 摩擦学学报, 2002, 22(3): 214-217.
引用本文: 磁流体密封水介质的自修复研究[J]. 摩擦学学报, 2002, 22(3): 214-217.
Experimental Study on Self-restoring of Magnetic Fluid Seal with Water as a Sealing Medium[J]. TRIBOLOGY, 2002, 22(3): 214-217.
Citation: Experimental Study on Self-restoring of Magnetic Fluid Seal with Water as a Sealing Medium[J]. TRIBOLOGY, 2002, 22(3): 214-217.

磁流体密封水介质的自修复研究

Experimental Study on Self-restoring of Magnetic Fluid Seal with Water as a Sealing Medium

  • 摘要: 通过磁流体密封水介质试验 ,观察分析了磁流体密封破裂后的修复过程 ,考察了导致磁流体密封破裂的因素对自修复程度的影响 .结果表明 :加压频次越多、密封破裂次数越少、磁场梯度越大、磁极靴的密封齿级数越小、磁极数越多、磁流体补给越充分及修复时间越长 ,则磁流体密封的自修复能力越强 .提高磁流体损耗后的补给程度可以大幅度提高自修复能力 .为了获得较好的自修复效果 ,宜采用多极 -多级密封结构 ,并保证足够的修复时间

     

    Abstract: Magnetic fluid sealing tests with water as the sealing medium were conducted on a test rig established in lab. The self restoring capacity of the magnetic fluid sealing was investigated by taking into account various factors including the pressure increasing frequency, bursting times, magnetic field gradient under the sealing teeth, the number of sealing teeth on magnetic poles, the number of magnetic poles, and the restoring time. It has been found that the magnetic fluid sealing with water as the sealing medium give similar results to those observed for the sealing with gas as the medium. However, contrary to what was observed in the magnetic fluid sealing with gas as the medium, the second self restoring rate of the sealing with water as the medium is constantly lower than the first self restoring rate. It was suggested to use multi pole and multi class sealing structure and assure enough replenishment of the magnetic fluid so as to increase the self restoring capacity of magnetic fluid sealing.

     

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