300MW抽水蓄能发电机组推力轴承挡油板螺栓损坏原因分析  

Analysis Reason for Damage of Thrust Bearing Oil Baffle Plate Bolts in A 300MW Pumped Storage Generator

作　　者：牛玉静[1] 冯文吉 李刚 李坤鹏 

机构地区：[1]河南电力试验研究院,河南郑州450052 [2]国网宝泉抽水蓄能有限公司,河南新乡453000

出　　处：《能源与节能》2011年第9期57-59,共3页Energy and Energy Conservation

摘　　要：国网宝泉抽水蓄能有限公司300 MW发电机组大修后启动过程中推力轴承挡油板螺栓全部损坏。通过研究断裂现场情况并对螺栓材质、硬度、金相组织和断口进行分析,得出,挡油板螺栓连接丝扣数量不足,螺杆外露长度大于设计要求,造成承载能力显著下降,导致运行期间发生损坏。The paper analyzed the fracture site and material of bolts,hardness,metallographic structure and fracture,point out the following conclusions： the quantity of oil baffle plate bolt fastening screw thread not sufficient,the length of exposed screw is greater than the design requirements,this condition will result significant decline in carrying capacity,and lead to damage during operation.

关 键 词：挡油板 Q235B 螺栓 断口 原因分析 

分 类 号：TK05[动力工程及工程热物理]