基于Halbach阵列的水轮发电机组永磁悬浮承重装置  

Permanent Magnetic-Levitation Weight Support System of Hydroelectric Generating Set Based on Halbach Array

作　　者：梁欢[1] 马宏忠[1] 王庆燕[1] 姜鸿羽 

机构地区：[1]河海大学能源与电气学院,南京市210098

出　　处：《电力建设》2014年第10期7-12,共6页Electric Power Construction

基　　金：国家自然科学基金项目(51177039);高等学校博士学科点专项科研基金资助项目(200909411011);中国水利电力科学研究院开放研究基金项目(200954211)

摘　　要：大中型立轴式水轮发电机组巨大的轴向负荷容易使推力瓦油膜变形,从而造成推力轴承的损坏。为了解决这个问题,设计了基于水轮发电机组的混合磁悬浮承重系统来减小推力轴承承担的轴向负荷。其中永磁悬浮装置体积很大而现场安装空间有限,提出了将Halbach阵列应用于永磁悬浮承重装置,并用有限元分析软件对承载力与装置结构尺寸关系进行了仿真分析。结果显示,基于Halbach阵列的永磁悬浮装置承载力得到很大的提升,因而装置体积可以得到适当缩小,成本也可得到节约。The axial load of large and medium-sized vertical shaft hydro-generating set is very huge, which can easily cause the deformation of the oil film of thrust pad, thereby damage the thrust bearing. To solve this problem, a hybrid rotor weight support system for hydraulic turbine generator set was designed to reduce the axial load on thrust bearing. But the permanent magnetic levitation device had the drawbacks of occupying so much space that it hardly met the install requirement, so Halbach array was applied to permanent magnetic levitation device. The relationship of bearing capacity with device structural size was analyzed with the FEA software-ANSYS. The results show that the beating capacity of this device is greatly improved, thus the device size can be contracted and the cost can be saved.

关 键 词：水轮发电机组 HALBACH阵列 永磁悬浮 承载力 ANSYS 

分 类 号：TU47[建筑科学—结构工程]