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核聚变与等离子体物理 ›› 2025, Vol. 45 ›› Issue (3): 265-272.DOI: 10.16568/j.0254-6086.202503003

• 核聚变工程 • 上一篇    下一篇

HL-3 烘烤实验中偏滤器与真空室间温差形成原因的仿真分析

白玉杰,颉延风*,贾瑞宝,蔡 强,蒙建朋,邱丽媛,王佳琪,卢 勇,刘晓龙
  

  1. (核工业西南物理研究院,成都 610041)
  • 出版日期:2025-09-15 发布日期:2025-09-29
  • 通讯作者: 颉延风(1971-),男,陕西岐山人,研究员级高级工程师,从事聚变堆热力工程和流体力学研究。
  • 作者简介:白玉杰(2000-),女,四川雅安人,硕士研究生,核能科学与工程专业。

Simulation analysis of the reasons for the formation of temperature difference between the divertor and the vacuum vessel in the HL-3 baking experimen

BAI Yu-jie, XIE Yan-feng, JIA Rui-bao, CAI Qiang, MENG Jian-peng, QIU Li-yuan, WANG Jia-qi, LU Yong, LIU Xiao-long #br#   

  1. (Southwestern Institute of Physics, Chengdu 610041)
  • Online:2025-09-15 Published:2025-09-29

摘要:

针对HL-3 装置前2 轮烘烤实验中均出现偏滤器温升滞后于真空室温升,且二者之间的温差在烘烤至高温阶段后超过20℃的现象,采用三维仿真与一维仿真相结合的办法对下偏滤器的烘烤过程进行模拟,与真空室和偏滤器的烘烤实验结果进行了比对,进一步通过控制变量法分析了影响偏滤器烘烤温度变化的因素。结果显示,质量流量偏低和分/集气管处保温层厚度偏薄是导致真空室和偏滤器之间温差较大的主要原因。此外,分析表明减小偏滤器质量和减小偏滤器管道回路的歧管段直径有助于提高烘烤温度,为下一阶段上偏滤器的设计提供了参考。

关键词: HL-3装置, 偏滤器, 烘烤, 温差

Abstract:

According to the first two campaigns of baking experiments on HL-3 tokamak, the temperature rise of the divertor lagged behind that of the vacuum vessel, and their temperature difference exceeded 20℃ after reaching the high baking stage. The baking process of the lower divertor is simulated by combining 3D simulation methods with one-dimensional ones. The results of the baking experiments between the vacuum vessel and divertor are compared. Furthermore, the factors for affecting the baking temperature change of the divertor are analyzed using the control variable method. The results indicate that the main reasons for the large temperature difference between the vacuum vessel and divertor are the low mass flow rate and the thin insulation layer at the distribution pipes. In addition, the analysis elucidated that reducing the mass of the divertor and the diameter of the manifold section of the divertor piping circuit helped increase the baking temperature, which provided a reference for the next stage of the upper divertor design.

Key words: HL-3 tokamak, Divertor, Baking, Temperature difference

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