• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (3): 154-161.doi: 10.3901/JME.2019.03.154

• 数字化设计与制造 • 上一篇    下一篇

高速磁悬浮鼓风机涡轮锁紧装置设计分析及试验

董宝田1,2, 王坤1,2, 韩邦成1,2, 郑世强1,2   

  1. 1. 北京航空航天大学惯性技术重点实验室 北京 100191;
    2. 北京航空航天大学新型惯性仪表与导航系统技术国防重点学科实验室 北京 100191
  • 收稿日期:2018-02-05 修回日期:2018-07-15 出版日期:2019-02-05 发布日期:2019-02-05
  • 通讯作者: 王坤(通信作者),男,1982年出生,博士,讲师,硕士研究生导师。主要研究方向为多物理场设计方法、磁悬浮高速旋转动力机械设计、磁悬浮失稳保护技术。E-mail:wangkunggg@163.com
  • 作者简介:董宝田,男,1987年出生,博士研究生。主要研究方向为多物理场耦合仿真分析。E-mail:dongbaotian@buaa.edu.cn
  • 基金资助:
    国家自然科学基金(61421063)和国家重大科学仪器设备开发专项(2012YQ040235)资助项目。

High-speed Maglev Blower Turbine Locking Device Design Analysis and Experiment Research

DONG Baotian1,2, WANG Kun1,2, HAN Bangcheng1,2, ZHENG Shiqiang1,2   

  1. 1. Science and Technology on Inertial Laboratory, Beihang University, Beijing 100191;
    2. Fundamental Science on Novel Inertial Instrument & Navigation System Technology Laboratory, Beihang University, Beijing 100191
  • Received:2018-02-05 Revised:2018-07-15 Online:2019-02-05 Published:2019-02-05

摘要: 高速磁悬浮鼓风机由于采用磁轴承支撑和高速直驱的工作方式,相比于传统鼓风机可以显著提高工作效率,具有清洁、静音、维护费用低,无需油膜润滑等优点,但是相对于传统鼓风机,高速磁悬浮鼓风机对涡轮叶片的锁紧装置有特殊的要求。针对一台额定功率为315 kW额定转速为30 000 r/min的高速磁悬浮鼓风机的涡轮锁紧装置进行设计和动力学分析,建立其在加速过程、稳速运行、降速过程和意外跌落过程等4种工况下的力学模型,分析了其工作原理与失效的原因,并针对磁悬浮转子意外跌落的冲击载荷进行了结构上的改进设计,使其满足在所有工况下的可靠锁紧。改进后的锁紧装置通过试验证明了其有效性和可行性,本研究可以为同类机构的设计提供参考。

关键词: 冲击失效, 磁悬浮鼓风机, 螺纹连接, 涡轮锁紧机构

Abstract: High-speed maglev blower due to the workings of a high-speed direct drive, compared to traditional blower can significantly improve the work efficiency, furthermore due to the magnetic suspension bearing supporting without oil film lubrication, has the advantages of cleaning, ultra-quiet, low maintenance cost and so on. However, compared with the traditional turbine installation, high speed maglev blower has special request for turbine locking device to meet the operating requirements of high speed and high stability. Based on a rated power 315 kW high-speed maglev blower with rated speed of 30 000 r/min, its turbine locking device has been analyzed. The mechanical models of four conditions such as accelerating process, steady speed operation, slow down and accidental dropping process have been listed to analyze its working principle and the possibility of failure. Finally, the turbine locking device has been improved for the magnetic suspension rotor impact load, and the reliable locking under all conditions has been proved by practical application. It may provide reference for the similar mechanism.

Key words: high-speed maglev blower, impulse load, threaded connections, turbine locking device

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