摘要
密封对电机轴承而言至关重要,一旦泄漏,电机将无法安全运行。针对现有大型电机轴承端面密封结构在负压情况下存在泄漏的问题,本文采用引正压的方法来增强其密封效果,幵通过CFD仿真计算与试验研究迚行对比分析。结果表明:引正压能显著地提高密封结构的密封性能,而且正压孔数越多,同时正压值越大,密封效果越好;CFD仿真值与实测值具有较好的一致性,这为后续电机轴承的密封设计提供参考。
Sealing is essential for motor bearings, as motor will not be able to running safely if the leakage occurs. In order to solve the problem of large motor bearing sealing structure leak oil under the condition of negative pressure, a method of exerting positive pressure was applied to enhance the sealing effect performance. CFD simulation and experimental study is comparatively analyzed. The results show that positive pressure can significantly improve the sealing performance of sealing structure and the more positive pressure holes are and the stronger positive pressure is, the better the sealing performance is. CFD simulation has a good consistency with the experimental measured data, moreover, it will provide reference for designing the motor bearing sealing structure.
出处
《大电机技术》
2016年第4期25-28,60,共5页
Large Electric Machine and Hydraulic Turbine
关键词
电机轴承密封
正压
CFD
试验
motor bearing labyrinth seal
positive pressure
CFD
experiment research
