真空 ›› 2022, Vol. 59 ›› Issue (2): 26-31.doi: 10.13385/j.cnki.vacuum.2022.02.06
廖泽宇1, 毛世峰1, 赵长莲2, 叶民友1
LIAO Ze-yu1, MAO Shi-feng1, ZHAO Chang-lian2, YE Min-you1
摘要: 在德国卡尔斯鲁厄理工学院提出的KALPUREX(Karlsruhe liquid metal based pumping process for fusion reactor exhaust gases)流程中,利用直线型水银扩散泵实现对聚变堆排灰气的连续抽气,从而解决使用捕集式低温泵带来的高氚滞留量问题。为了支持直线型水银扩散泵的设计研究,基于直接模拟蒙特卡洛方法开展了直线型水银扩散泵的抽气性能模拟研究。基于早期实验中的直线型水银扩散泵结构,模拟了空气的抽气速率及水银返流率,并分析了其随压强变化的原因。针对聚变堆排灰气中可能包含的氢(作为氢同位素的代表)、氦、氖、氩等气体,分别模拟了直线型水银扩散泵的抽气性能。模拟得到的不同气体的抽气速率与气体摩尔质量间的关系基本符合理论预测。
中图分类号:
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