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核工业西南物理研究院 ›› 2025, Vol. 45 ›› Issue (2): 205-211.DOI: 10.16568/j.0254-6086.202502012

• 核聚变工程 • 上一篇    下一篇

高热负荷下托卡马克装置包层第一壁不同连接的结构分析与评估

周远航,刘素梅*   

  1. (安徽农业大学,合肥 230036)
  • 收稿日期:2023-10-13 修回日期:2024-04-26 出版日期:2025-06-15 发布日期:2025-06-13
  • 通讯作者: 刘素梅(1976-),女,河南滑县人,教授,主要从事机械机械CAD/CAE研究。
  • 作者简介:周远航(1998-),男,安徽霍邱人,硕士研究生,主要从事机械CAD/CAE研究。
  • 基金资助:
    国家自然基金“聚变堆铁磁性包层环向不连续对等离子体稳定性影响的研究”(12075278)

Structural analysis and evaluation of different connection for the first wall with high heat load of the tokamak blanket

ZHOU Yuan-hang, LIU Su-mei   

  1. (Anhui Agricultural University,Hefei 230036)
  • Received:2023-10-13 Revised:2024-04-26 Online:2025-06-15 Published:2025-06-13

摘要: 基于简化的第一壁(FW)模型,采用有限元方法在相同的边界条件和热载荷下得到了第一壁两种连接方案的温度分布,在温度场分析结果的基础上开展第一壁连接结构的弹性分析和弹塑性分析,评估了第一壁两种结构的力学性能。通过分析可知:第一壁采用焊接连接形式方案时,具有较好的换热效果,在相同热载荷作用下,铠甲温度相对较小。但结构分析结果表明,钨铠甲结构应力较大且第一壁流道结构设计裕量较小;第一壁采用螺栓连接形式方案时具有方便铠甲维修的优点,但换热能力相对较差,螺栓设计裕量较小,可能会出现裂纹甚至断裂。因此,在确定第一壁方案时,可根据装置的运行条件和维护要求,选择适合的第一壁连接方案。

关键词: 托卡马克, 第一壁, 铠甲, 结构评估

Abstract:

Based on the simplified first wall (FW) model and finite element method, the temperature distribution of two connection schemes for the FW is obtained under the same boundary conditions and thermal loads. Based on the temperature field analysis results, the elastic and elastic-plastic analysis of the FW connection structure is carried out to evaluate the mechanical properties of the two structures, which has a good heat transfer effect when the FW is connected by welding. Under the same thermal load, the armor temperature is relatively small. However, the structural analysis results show that the tungsten armor structure has high stress and the design margin of the FW flow channel structure is small; When the FW is connected by bolts, it has the advantage of convenient armor maintenance, but the heat exchange capacity is relatively poor, and the bolt design margin is small, which may cause cracks or even fractures. Therefore, when determining the FW scheme, a suitable FW connection scheme can be selected based on the operating conditions and maintenance requirements of the device.

Key words: Tokamak; First wall, Armor, Structural evaluation

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