李精精,孙晓晖,蔡盟利,林盛盛,王辉

• 1:中国核电工程有限公司

摘要(Abstract)：

为更好地对氢气燃烧风险进行分析，采用GASFLOW-MPI1.0程序对大型压水堆核电站建立分析模型开展氢气分布和燃烧计算研究。在分析过程中考虑了氢气缓解措施和氢气分布情况对燃烧及爆炸的影响。氢气缓解措施有效时，同时由于局部隔间受到水蒸气惰化作用影响，局部隔间点火后并未造成火焰向其他隔间和安全壳大空间范围内发生传播现象；当氢气缓解措施失效时，较高的氢气浓度使安全壳内火焰得以传播，燃烧的最大温度约2 000 K，最大压力约1 MPa；氢气浓度分布形式会对火焰传播和燃烧后果产生较大影响，氢气总量一定时，考虑氢气梯度分布会造成安全壳穹顶位置具有较高的氢气浓度，在点火初期极大地加速了火焰燃烧产生的能量和火焰传播速度，因此会造成更为严重的氢气风险。

关键词(KeyWords)： GASFLOW-MPI;压水堆;氢气风险;缓解措施;燃烧

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 李精精,孙晓晖,蔡盟利,林盛盛,王辉

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