新型轴向磁气组合轴承性能研究  

A study on the performance of a new type axial magnetic-gas bearing

作　　者：陈李成 谢振宇[1] 吴炎 郝建胜 CHEN Licheng;XIE Zhenyu;WU Yan;HAO Jiansheng(National Key Laboratory of Science and Technology on Helicopter Transmission,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学,直升机传动技术重点实验室,南京210016

出　　处：《振动与冲击》2021年第16期45-52,共8页Journal of Vibration and Shock

基　　金：国家自然科研基金项目(11002162)。

摘　　要：将螺旋槽型动压气体止推轴承(spiral groove gas bearing,SGGB)与主动磁轴承相结合,搭建了轴向磁气组合轴承转子系统试验台。通过仿真分析,研究了槽深、槽数、槽宽比、槽端半径比和螺旋角等结构参数对螺旋槽型动压气体止推轴承承载力的影响。通过高速旋转试验,研究了螺旋槽型动压气体止推轴承的实际承载力和系统的动态性能。通过跌落试验,验证了螺旋槽型动压气体止推轴承作为轴向保护轴承的可行性。研究结果表明,引入螺旋槽型动压气体止推轴承,有助于提高系统的动态性能,当轴向磁轴承失效时,可减轻转子直接撞击造成的损害。With the combination of spiral groove gas bearing(SGGB)and active magnetic bearing,a rotor system test-bed of axial magnetic-gas bearing was built.Through simulation analysis,the effects of structural parameters of the SGGB on the bearing capacity were studied,such as groove depth,groove number,groove width ratio,groove end radius ratio and spiral angle.Through the high-speed rotation test,the actual bearing capacity of the SGGB and the dynamic performance of the system were studied.Through the drop test,the feasibility of the SGGB as axial protection bearing was verified.The research results show that the SGGB can improve the dynamic performance of the system and can reduce the damage caused by the direct impact of the rotor when the axial magnetic bearing fails.

关 键 词：磁轴承 动压气体轴承 磁气组合轴承 

分 类 号：TH133.3[机械工程—机械制造及自动化]