1. 哈尔滨工程大学核科学与技术学院
2. 中国核电工程有限公司
纸质出版:2026
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刘鑫棪, 张璐, 刘丰, 等. 不同隔间开孔方案下安全壳内的氢气输运特性[J]. 核科学与工程, 2026,46(1):82-91.
刘鑫棪, 张璐, 刘丰, et al. 不同隔间开孔方案下安全壳内的氢气输运特性[J]. 2026, 46(1): 82-91.
刘鑫棪, 张璐, 刘丰, 等. 不同隔间开孔方案下安全壳内的氢气输运特性[J]. 核科学与工程, 2026,46(1):82-91. DOI: 10.20190/j.cnki.02580918.202601011.
刘鑫棪, 张璐, 刘丰, et al. 不同隔间开孔方案下安全壳内的氢气输运特性[J]. 2026, 46(1): 82-91. DOI: 10.20190/j.cnki.02580918.202601011.
针对严重事故下氢气容易在连通性较差的卸压箱隔间内聚集的问题,采用数值模拟的方法,构建了组分通量冷凝模型和多组分气体输运模型,开展了不同隔间开孔方案下安全壳内氢气输运特性的研究。结果表明,换热器表面的冷凝会引起周围氢气的聚集,而安全壳隔间的连通模式也会改变氢气的输运行为。当采用稳压器隔间顶部开孔的偏心布置时,尽管改变了氢气的循环模式,并且防止了稳压器隔间连通口进入燃爆风险区,但并不能有效地稀释上部空间的高浓度氢气;当采用稳压器隔间与环廊连通处开孔的侧面布置时,能促进氢气在下部区域的搅混,削弱氢气在穹顶区域的聚集,使高浓度氢气在安全壳内的空间占比从21%降低至4.3%,同时也使稳压器隔间连通口位于燃爆风险区的时间从中心布置下的90 s降低至6 s。
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