反应堆严重事故中安全壳底板熔穿失效分析模型  

Model for Analysis of Containment Failure by Melt-through during Severe Accident of Reactor

作　　者：陈志云[1] 徐少华 陈文振[1] 

机构地区：[1]海军工程大学核能科学与工程系,武汉430033 [2]海军核安全局,北京100841

出　　处：《核动力工程》2010年第S1期4-7,共4页Nuclear Power Engineering

摘　　要：以围绕热源的接触熔化为基础,对反应堆严重事故中安全壳底板熔穿失效进行分析计算。在一定的假设条件下建立了新的更合理的接触熔化分析模型,求得了熔化的速度和熔穿所需要的时间,将其结果与相关文献进行了比较,并分析了影响熔化的主要因素,结果表明,熔化速度与熔化体质量和接触面传热比(k)成正比,熔穿时间则与熔化体质量和k成反比。因此,采用工程设施应减小单个熔化体质量,增大熔化体上表面的传热量。The containment failure by melt-through during severe accident is analyzed and calculated based on the contact melting around the heat source. A new and more rational analysis model of contact melting is established under certain hypothesis,and the melting velocity and the time needed for melt-through are calculated. The results are compared with some related literatures. The mass of heat source and the heat transfer ratio k as the main factor on melt-through are analyzed,and the conclusions are drawn that the melting velocity is in direct ratio with the mass of heat source and approximately in direct ratio with the heat transfer ratio,and however the relation of the time needed for melt-through with the mass of heat source and k is in the opposite way. It is indicated that in order to delay the melt-through additional engineering device to reduce the mass of single heat source and enhance the upside heat transfer is of great importance.

关 键 词：严重事故 接触熔化 安全壳失效 

分 类 号：TL364.3[核科学技术—核技术及应用]