Abstract: The bolt preload of the HL-3 carbon-based first wall basic module at high temperature was analyzed, and the stress distribution of the first-wall structure and the variation of bolt pretension force was obtained, which provides the data support for the on-site installation of the first-wall structure.

Key words:  , HL-3 tokamak, Carbon-based first wall, Bolt preload, Stress distribution

摘要： 通过对HL-3装置第一壁基本模块进行高温下的螺栓预紧力分析，获得第一壁结构的应力分布及螺栓预紧力的变化情况，为碳基第一壁结构的现场安装提供数据支撑。

关键词: HL-3装置, 碳基第一壁, 螺栓预紧力, 应力