摘要
线圈终端盒是保证国际热核聚变实验堆装置可靠运行的关键部件之一,为磁体系统与低温车间、电源大厅、数据采集系统和低温控制元件提供4.5K的超低温工作环境。线圈终端盒内设有80K冷屏,以吸收室温环境对其内部工作空间带来的辐射热负荷。本文首先根据传热学原理对线圈终端盒冷屏热性能进行理论分析,确定了冷屏的结构型式,然后再对线圈终端盒冷屏结构建模,利用有限元流固体耦合分析软件FLUENT进行了数值模拟仿真分析,最后以设计分析结果为依据制作1∶1线圈终端盒整体实验系统进行实验验证,并对实验数据和数值模拟结果进行了分析比较,结果非常吻合,为下一轮冷屏结构的设计及大规模生产提供了可靠的依据。
We addressed the thermal shielding of the coil terminal box（CTB） - one of the key componens of the feeder of the International Thermonuclear Experimental Reactor （1TER）. Covered with an internal 80K thermal radiation shield, the CTB provides the 4.5K environment and houses the interconnection of the magnet systems with the Cryoplant,the power supplies,the data acquisition system and the local cryogenic components. After the thermal shielding characteristics of the CTB were theoretically analyzed,its possible structure was modeled,with a 0.18MPa nitrogen gas inlet as the boundary condition,and simulated in finite dement method （FEM） with the commercial software package FLUENT.Based on the simulated results,the full-sized prototype CIB was designed, constructed and experimentally tested. We found that the experimental results,under the steady state of the CTB thermal shielding,agree extremely well with the simulated results.
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2010年第1期28-32,共5页
Chinese Journal of Vacuum Science and Technology
基金
国家973项目"ITER高温超导超大电流引线型超导传输线的研究"(No.2008CB717906)
ITER计划专项支持(项目名称:ITER大型超导磁体系统馈线研究(No.2008GB102000)
关键词
冷屏
热辐射
数值模拟
ITER
Thermal shield, Heat radiation, Numerical simulation, ITER
