压紧弹簧两点接触下的吊篮法兰LOCA工况应力分析

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Analysis of Core Barrel Flange in LOCA under Two Point Contact with Hold Down Spring

摘要: 对欧洲三代压水堆(EPR)吊篮法兰在两相失水事故(LOCA)瞬态下压紧弹簧"两点接触"状态下的载荷计算方法和EPR堆内构件吊篮法兰在LOCA工况下的受载特点进行分析。采用SYSTUS程序建模计算两相LOCA时吊篮法兰与压紧弹簧"两点接触"时的应力水平,通过与LOCA动态响应等效换算获得LOCA工况下的应力响应,并根据压水堆核岛机械设备设计和建造规范(RCC-M)的具体要求进行吊篮法兰应力评定。
- 吊篮法兰 /
- 压紧弹簧 /
- 两相LOCA /
- 两点接触
Abstract: To obtain the real contact condition between core barrel flange and hold down spring, and to obtain accurate results of analysis of Core Barrel Flange in the Case of LOCA, this paper introduced the main loads applied on CERP core barrel flange, especially, the load applied by hold down spring in the case of two-phase LOCA under the mode of "two point contact". This paper presented an analysis of core barrel flange in LOCA condition based on SYSTUS, obtained the stresses of core barrel flange in LOCA condition by comparing displacements and estimated the behavior of core barrel flange according the rules of RCC-M.
- Core barrel flange /
- Hold down spring /
- Two-phase LOCA /
- Two point contact