顶置磁力搅拌器磁悬浮支承结构设计与仿真分析  

Structural Design and Simulation Analysis of Magnetic Suspension Support of Top-Mounted Magnetic Stirrers

作　　者：吴华春[1,2] 彭秋阳 朱生 WU Huachun;PENG Qiuyang;ZHU Sheng(School of Mechanical and Electrical Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei Maglev Engineering Technology Research Center,Wuhan 430070,China;Zhejiang Boye Machinery Technology Co.,Ltd.,Wenzhou 325000,China)

机构地区：[1]武汉理工大学机电工程学院,武汉430070 [2]湖北省磁悬浮工程技术研究中心,武汉430070 [3]浙江博业机械科技有限公司,浙江温州325000

出　　处：《轴承》2024年第7期14-20,共7页Bearing

基　　金：国家重点研发计划资助项目(2018YFB2000103)。

摘　　要：针对顶置磁力搅拌器陶瓷轴承内部结构复杂,存在接触摩擦和润滑,且不利于在位清洗和在位灭菌的问题,对磁力搅拌器的载荷组成及搅拌轴支承布局进行分析,采用磁悬浮支承技术,增大主动磁轴承转子的轴向长度,确保转子在产生轴向位移时能被稳定支承;不考虑被动磁轴承与磁力联轴器因不对中产生的径向力,建立搅拌器转子的四自由度支承刚性转子模型,研究不同外部载荷对搅拌器转子的动态响应和线圈控制电流的影响,结果表明:外部载荷越大,外部载荷在长悬臂结构上的力矩作用效果越明显,主动磁轴承需提供的电磁力越大,对磁轴承功率放大器的要求越高。When top-mounted magnetic stirrers are supported by ceramic bearings,the ceramic bearings are not conducive to cleaning in place and sterilization in place due to their complex internal structure,contact friction and lubrication.The load composition of the stirrers and layout scheme of stirring shaft supporting mode are analyzed.The magnetic suspension support technology is adopted to expand the axial length of active magnetic bearing rotor,ensuring that the rotor can be stably supported when axial displacement occurs.Without considering the radial force caused by misalignment between passive magnetic bearings and magnetic couplings,a four degrees of freedom supported rigid rotor model of stirrer rotor is established to study the influence of different external loads on dynamic response of stirrer rotor and control current of coil is studied.The results show that as the external load increases,the torque effect generated by external load on long cantilever structure becomes more obvious,the larger the electromagnetic forces provided by active magnetic bearings,the higher the requirement for magnetic bearing power amplifier.

关 键 词：滑动轴承 磁力轴承 搅拌器 转子 支承结构 电流 位移幅值 

分 类 号：TH133.31[机械工程—机械制造及自动化] TH122