EAST装置第一壁热沉冷却结构关键工艺的研究

Key technology research on EAST PFCs heat-sink cooling structure

对由埋管引起的面对等离子体第一壁热沉冷却结构冷却效果的下降进行了实验测量与数值模拟。在相同加热源条件下,比较了热沉内光孔、埋管打压胀管及高温真空埋管钎焊三种工艺实验件的换热效率,并与数值模拟的结果进行比较,确定了合理的计算模型和参数。对高场测的热沉原型件,比较了埋管打压胀管和高温真空钎焊连接换热效率,为EAST热沉冷却结构优化提供了依据。

Cooling effect decline of the plasma facing components（PFCs） due to tube in heat-sink was studied experimentally and numerically.In the same heated wall condition,a heat exchange performance comparison is made among the processing technology of no tube in heat-sink,using high pressure to ensure residual stress between cooper tube and heat-sink,and high temperature vacuum welding.Numerical simulation was carried out,and a reasonable calculation models and parameters were determined.A heat-sink prototype heat exchange performance comparison is made between the processing technology of using high pressure and high temperature vacuum welding,to provide the basis for EAST PFCs cooling structure optimization.