为研究氚自持条件,建立了Z-FFR氚分析模型,基于理论方程和氚平均滞留时间方法进行计算,得到稳态运行时排灰气处理系统、氚增殖提取系统、同位素分离系统、水去氚化系统的氚质量流分别为52.30,25.40,81.30,3.60 g/day,对应的氚盘存量为52.30,25.40,8.13,1.80 g.同时以氚质量流推导出氚自持判断条件,分析了设计参数能够满足氚自持要求,同时获得了燃烧效率、氚增殖率、提取效率与氚自持的互补关系,三者作为关键参数相互依存,于临界值、设计值、理想值之间分析了氚的自持情况.%Tritium self-sufficiency of Z-pinch driven fusion-fission hybrid reactor (Z-FFR)is the basis of its long-term oper-ation.In order to analyse the conditions of tritium self-sufficiency,a modified tritium fuel cycle model and equations of Z-FFR based on mean residence time calculation method were established.Through theoretical analysis and calculation,the tritium mass-flow of Z-pinch exhaust processing system(ZEP),tritium extraction system(TES),isotope separation system(ISS),water detri-ation system(WDS)were got.The results of tritium mass-flow are 52.30,25.40,81.30,3.60 g/day,and tritium inventory are 52.30,25.40,8.13,1.80 g.Meanwhile,criteria of tritium self-sufficiency were given out based on mass-flow.The design pa-rameters can meet this requirements.Then the complementary relationship of burning rate,tritium breeding ratio and extraction efficiency under tritium self-sufficiency critical condition were analyzed.
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