长江科学院院报2019，Vol.36Issue(1)：134-138,5.DOI:10.11988/ckyyb.20170754
某抽水蓄能电站顶盖螺栓断裂原因分析
Causes of Header Bolt Fracture of a Pumped Storage Power Station
赵强 1柴建峰 1马传宝 1丁景焕 1李博2
作者信息
- 1. 国网新源控股有限公司 技术中心,北京 100161
- 2. 国网新源控股有限公司 回龙分公司,河南 南阳 473000
- 折叠
摘要
Abstract
Fractures were found in the header bolts of a pumped storage power station. According to bolt fracture a-nalysis, fatigue cracks originated in the thread root were found in most of the bolts. Tip stress concentration induced by the source of cracks led to bolt fracture. To analyze the cause of bolt fracture, the diameter of the bolt was calcu-lated and checked. It was found that the bolt diameter was small when the preloaded condition of the bolts was satis-fied, and the fatigue strength calculation safety factor was small as well, which would lead to fatigue damage. In-creasing the bolt diameter could not only meet the bolt preloading requirement, and also meet the requirement of bolt fatigue design.关键词
抽水蓄能电站/顶盖螺栓/断裂/疲劳/预紧安全系数/疲劳强度计算安全系数Key words
pumped storage power station/header bolt/fracture/fatigue/preloaded safety factor/safety factor of fatigue strength分类
机械工程引用本文复制引用
赵强,柴建峰,马传宝,丁景焕,李博..某抽水蓄能电站顶盖螺栓断裂原因分析[J].长江科学院院报,2019,36(1):134-138,5.
