| 反应堆压力容器螺栓法兰连接设计与改进 |
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| 引用本文： | 周高斌,罗 英,邱 天,等.反应堆压力容器螺栓法兰连接设计与改进[J].压力容器,2014(3):70-76. |
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| 作者姓名： | 周高斌 罗 英 邱 天 等 |
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| 作者单位： | 中国核动力研究设计院核反应堆系统设计技术国家级重点实验室,四川成都610041 |
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| 摘 要： | 反应堆压力容器（RPV）螺栓法兰连接设计应避免螺栓卡涩并减少螺纹损伤,在RPV主螺栓安装及运行过程中一旦发生主螺栓或螺孔螺纹损伤事故,势必会影响核电站安装或换料的正常进行,增加维修成本,进而影响整个核电站的经济效益。以M310堆型RPV为例,对主螺栓与法兰螺孔的设计进行分析和讨论,并结合核电厂安装及运行中出现的典型螺纹损伤案例,对螺纹损伤原因进行分析,最后对螺栓法兰设计提出改进建议,以减少RPV主螺栓和螺孔螺纹损伤事故,降低螺纹损伤的风险。
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| 关 键 词： | 反应堆压力容器 主螺栓 螺孔 螺纹损伤 改进 |
Design and Improvement of Bolted Flange Connection for Reactor Pressure Vessel |
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| Affiliation: | ZHOU Gao - bin,LUO Ying, QIU Tian, ZHANG Ya - bin, WANG Xiao - bin, ZENG Peng, XIE Guo -fu (Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610041, China) |
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| Abstract: | The design of bolted flange connection for reactor pressure vessel（ RPV） should prevent bolt stucking and reduce thread damages. It will influence the normal installation and refueling of nuclear power plant,on the thread damage accidents of RPV bolts and hole are happened during the construction and operation phase. It will also increase the cost of repair and impact economical benefit of nuclear power plant. Basing on the M310 nuclear power plant,an analysis and discussion for the design of bolt and bolt hole were made. Then,according to the happened typical thread damages of bolt and bolt hole,the reason of thread damage was analyzed and some improvement researches were made. Finally,some improvements to reduce the incidence and risk of thread damages were proposed. |
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| Keywords: | reactor pressure vessel（RPV） bolt thread hole thread damage improvement |
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