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公开(公告)号:US4795607A
公开(公告)日:1989-01-03
申请号:US43844
申请日:1987-04-29
CPC分类号: G21C1/07 , G21C15/10 , Y02E30/33 , Y02E30/36 , Y10S376/908 , Y10S376/911
摘要: Gas-cooled high-temperature nuclear reactor having a reactor core comprising individual fuel elements provided with means for forming a barrier against the release of fission products producible therein during reactor operation, the fuel elements being received in a cylindrical barrel formed of an inner graphite layer functioning as a reflector, an outer layer of insulating material surrounding the inner layer, and a metallic receptacle, the inner and outer layers and the receptacle being formed of respective side, bottom and cover portions, the side and cover portions of the inner layer being formed with first channels into which means for controlling the reactors are insertable, the bottom, side and cover portions of the inner layer being further formed with second channels wherein, during reactor operation, cooling gas is circulated under pressure from the bottom to the top of the receptacle, the bottom portion of the inner layer having first openings for introducing cooling gas into the second channels during reactor operation and second openings for withdrawing during reactor operation cooling gas heated by passage through the reactor core; the inner and outer layers and the cylindrical core barrel having a heat conductivity and a thermal capacity and the reactor core having such a size, shape, power density and moderation ratio that a first temperature at which the core becomes subcritical for all possible accident conditions is below a second temperature at which the barrier means are destroyed, and, when loss of pressure of the cooling gas is experienced, after-heat generated in the core being removable by heat conduction and radiation through the inner and outer layers and the core barrel to a heat sink located outside the receptacle, in such a way that the fuel elements remain at a temperature below the second temperature.
摘要翻译: 气体冷却的高温核反应堆具有反应堆堆芯,该反应堆堆芯包括单独的燃料元件,该燃料元件设置有用于在反应堆操作期间形成阻挡其中可生产的裂变产物的阻挡的装置,燃料元件被容纳在由内部石墨层 用作反射器,围绕内层的绝缘材料的外层和金属容器,内层和外层以及容器由相应的侧面,底部和盖部分形成,内层的侧面和封面部分是 形成有第一通道,用于控制反应器的装置可插入其中,内层的底部,侧部和盖部分进一步形成有第二通道,其中在反应器操作期间,冷却气体在压力下从底部到顶部循环 所述容器,所述内层的底部具有用于引入冷却气体int的第一开口 o在反应堆操作期间的第二通道和用于在反应器操作期间抽出的第二开口通过反应堆堆芯加热的冷却气体; 所述内层和外层和所述圆柱形芯筒具有导热性和热容量,并且所述反应堆芯具有这样的尺寸,形状,功率密度和调节比,使得在所有可能的事故条件下所述芯变为亚临界的第一温度为 低于阻挡装置被破坏的第二温度,并且当经历冷却气体的压力损失时,在芯体中产生的后热可以通过内外层和核心筒的热传导和辐射而被除去, 位于容器外部的散热器,使得燃料元件保持在低于第二温度的温度。
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公开(公告)号:US4257845A
公开(公告)日:1981-03-24
申请号:US882755
申请日:1978-03-02
CPC分类号: G21C1/07 , B01F5/0644 , Y02E30/36
摘要: Mixing and distributing device for gases having high temperature includes a multiplicity of polygonal blocks stacked in a plurality of layers above and laterally adjacent one another, the blocks being formed with channels having respective axes disposed at an angle to one another and to a main gas in-flow direction, the channels of the respective blocks being connected with adjacent channels of the same or an adjacent block, the multiplicity of polygonal blocks defining a space wherein high temperature is producible.
摘要翻译: 具有高温气体的混合和分配装置包括多个层叠在多个层中并在彼此相互横向相邻的多个多边形块,所述块形成有具有彼此成角度设置的各个轴的通道和主要气体 流动方向,相应块的通道与相同或相邻块的相邻通道连接,多个多边形块限定了高温可生产的空间。
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