凸极同步电动机极靴固定螺栓失效分析与改进  

Failure analysis and improvement to the pole shoe bolts of salient pole synchronous motor

作　　者：高峰[1] 秦立宇[1] GAO Feng;QIN Liyu(Baoshan Iron & Steel Co. ,Ltd. , Shanghai 201900, China)

机构地区：[1]宝山钢铁股份有限公司,上海201900

出　　处：《宝钢技术》2021年第5期52-56,共5页Baosteel Technology

摘　　要：从转子结构、螺栓试验分析、受力计算等方面对大型凸极同步电动机转子极靴固定螺栓断裂失效原因进行分析。螺栓头部贯通十槽及开槽深度超过允许值将降低螺栓强度。极靴螺栓静态预紧力过大,可能会导致在电动机磁极高速运转的离心力作用下螺栓产生塑性变形。选择合适的螺栓头部结构型式及螺栓静态预紧力可以保证螺栓连接的可靠性。The failure of pole shoe fixing bolts for large salient pole synchronous motor is analyzed from rotor structure,bolt test analysis and force calculation.Bolt head through cross recess and recess depth beyond the allowance will reduce the strength of the bolt.The excessive static pre-tightening force may lead to the plastic deformation of the bolts under the centrifugal force of the pole in high speed operation.The reliability of bolt connection can be ensured by selecting suitable bolt head structure and bolt static preload.

关 键 词：凸极同步电动机 磁轭 极靴螺栓 

分 类 号：TM341[电气工程—电机]