The present invention relates to a molten material retention vessel and a reflux system for the external reactor using the remaining container. The container includes the crucible body and the grid shaped cube filled in the crucible body; the crucible consists of the main crucible and the auxiliary crucible; the main crucible and the auxiliary crucible are coupled. The system includes the cooling space set under the pressure vessel, the molten material retention vessel set in the cooling space, the cooling pipe line leading to the upper cooling space, the nanofluid cooling pipeline to the lower cooling space and the nanofluid preparation device connected with the nanofluid cooling pipeline. The beneficial effects of the invention are as follows: the coupling monomer crucible is a key problem for increasing the heat exchange area of the single crucible and solving the key problems of the multi crucible melting and even distribution. The sacrificial materials with high or lower molten material density are used in different positions, and the sacrificial material is easily distributed in the upper and lower parts of the molten material at the same time. Do not play the role of isolation and auxiliary heat transfer.
【技术实现步骤摘要】
一种熔融物滞留容器及采用该滞留容器的反应堆外熔融物滞留系统
本专利技术属于核工程领域,具体涉及一种熔融物滞留容器及采用该滞留容器的反应堆外熔融物滞留系统。
技术介绍
目前熔融物滞留技术分为熔融物堆内滞留和熔融物堆外滞留。相比熔融物堆内滞留策略,熔融物堆外滞留策略可满足更高功率堆型的堆芯熔融物冷却换热需求,主要表现在:1)堆外滞留策略具有更大的换热表面和空间;2)堆外滞留策略可引入大量的牺牲材料消耗一定的熔融物显热。采用堆外滞留策略的熔融物滞留容器主要包括单坩埚类和多坩埚类。专利US-Pat5263066采用多个熔融物收集容器设计,借此增大换热面积;专利US-Pat8358732采用大体积单个熔融物收集容器设计,增加冷却管线散热设计;专利US-Pat4113560亦采用单收集容器形式,通过喷淋与牺牲材料使用的结合实现熔融物的包容和冷却。然而,由于已建和在建的核电厂中多数堆型冷却空间有限,较单坩埚类设计采用多坩埚方案有效地增加换热面积的方式更加容易实现。但是多坩埚方案中“熔融物均匀分配”、“坩埚的连接”、“坩埚间气泡的堆积”等问题较难解决。鉴于此,本专利提出一种主、辅 ...
【技术保护点】
一种熔融物滞留容器,其特征在于:包括坩埚本体和填充于所述坩埚主体内部的网格状立方体结构;所述坩埚本体包括主坩埚和辅坩埚;所述主坩埚和辅坩埚耦合连接。
【技术特征摘要】
1.一种熔融物滞留容器,其特征在于:包括坩埚本体和填充于所述坩埚主体内部的网格状立方体结构;所述坩埚本体包括主坩埚和辅坩埚;所述主坩埚和辅坩埚耦合连接。2.如权利要求1所述的熔融物滞留容器,其特征在于:所述网格状立方体结构为密度大于9.0kg/m3的牺牲材料。3.如权利要求1所述的熔融物滞留容器,其特征在于:所述主坩埚和辅坩埚的耦合连接边缘为90-135°倒圆角连接。4.如权利要求1所述的熔融物滞留容器,其特征在于:所述坩埚本体的开口处为边缘向坩埚本体中心凹陷的漏斗状导流体。5.如权利要求4所述的熔融物滞留容器,其特征在于:所述导流体包括牺牲材料层和铺设于所述牺牲材料层的耐高温陶瓷材料层;所述牺牲材料层的牺牲材料密度为2.0-6.0kg/m3。6.如权利要求4所述的熔融物滞留容器,其特征在...
【专利技术属性】
技术研发人员:王洪亮,元一单,马卫民,李炜,郭强,韩旭,
申请(专利权)人:中国核电工程有限公司,
类型:发明
国别省市:北京,11
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