CAJ | 학술논문

将磁性液体特殊的零泄漏密封性能与流体离心密封可获较高压强的特性有机结合，在动力学计算分析基础上，开展磁性液体离心密封件的磁场仿真模拟，实施磁性液体离心密封深沟球轴承的优化设计与试制。在对两组轴承分别实施无密封处理及磁性液体离心密封处理后，本实验将两组轴承置于密闭空间内并对其运转时释放的微粒进行探测实验。实验发现未经密封处理的轴承释放出大量微粒，而实施磁性液体密封处理的轴承对密闭空间几乎没有明显微粒释放。结果表明，这种磁性液体离心密封的深沟球轴承能有效地减少润滑剂的散失和磨损微粒的排放，适用于高度洁净和真空的特殊环境。
장자성액체특수적령설루밀봉성능여류체리심밀봉가획교고압강적특성유궤결합，재동역학계산분석기출상，개전자성액체리심밀봉건적자장방진모의，실시자성액체리심밀봉심구구축승적우화설계여시제。재대량조축승분별실시무밀봉처리급자성액체리심밀봉처리후，본실험장량조축승치우밀폐공간내병대기운전시석방적미립진행탐측실험。실험발현미경밀봉처리적축승석방출대량미립，이실시자성액체밀봉처리적축승대밀폐공간궤호몰유명현미립석방。결과표명，저충자성액체리심밀봉적심구구축승능유효지감소윤활제적산실화마손미립적배방，괄용우고도길정화진공적특수배경。
Combining the special behavior of ferrofluid in no leaking seals and the high pressure in fluid based centrifugal seals, using the knowledge of computational hydrodynamic analysis, in this paper, the simulation of ferrofuild centrifugal seals is carried out to design and optimize for ball bearings. We set two bearings respectively in non-sealed and ferrofluid sealed conditions, then detect the particle concentration released by bearings in obdurate environment. The results clearly show that, the particle concentration released from non-sealed bearing increases significantly while the particle concentration from ferrofluid-sealed bearing stays steady. According to the test, this type of ferrofuild centrifugal seals for ball bearings can significantly reduce the loss of lubricant and the emission of wearing particles into the air, which shows a strong evidence that it can be used under the extreme clean or vacuum circumstance.