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本文详细介绍了核聚变实验装置以及未来聚变堆所需要的低温复合泵抽除氢同位素及氦混合气体的 情况，介绍了当前这种抽气技术在国内外发展状况．．重点介绍了我们已设计的“插板式’低温复会泵特 点——工作温度稳定、对氦吸附容量大，复合泵抽除混合气体时可长期工作． 计算部分重点是“自然对流”换热能力，驱动力的来源及计算方法，事故态所需安全阀的大小和回 气管道的影响．
In this paper, the conditions of the nuclear fusion experiment device and the low temperature compound pump required for the future fusion reactor to remove hydrogen isotope and helium mixed gas are introduced in detail. The current development status of this extraction technology at home and abroad is introduced. . We focus on the “plug-in” cryogenic recovery pump we have designed - stable working temperature, large adsorption capacity for helium, long-term work when the compound pump is used for pumping mixed gas, and the calculation focuses on the “natural convection” heat exchange capacity , The source of driving force and calculation method, the size of safety valve required for accident and the influence of gas return pipe.