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    • 6. 发明专利
    • Fast reactor and reflector aggregate of fast reactor
    • 快速反应器的快速反应器和反射器聚集
    • JP2013217874A
    • 2013-10-24
    • JP2012090813
    • 2012-04-12
    • Toshiba Corp株式会社東芝
    • NAGATA AKITOTSUBOI YASUSHIINATOMI TAKAYAKAWASHIMA MASATOSHIYOKOYAMA TSUGIOTARUYA KOHEI
    • G21C7/28
    • G21C7/28G21C1/022G21C3/326G21C7/06Y02E30/34Y02E30/38Y02E30/39
    • PROBLEM TO BE SOLVED: To make it unnecessary to replace a core barrel even after high irradiation due to life prolongation of a plant.SOLUTION: A fast reflector which performs reflector control for controlling reactivity of a core by moving a neutron reflector in the vertical direction includes: core fuel aggregate 11; neutron absorption aggregate 12 provided at the center of the core fuel aggregate 11; reflector aggregate 20 arranged in the surroundings of the core fuel aggregate 11; a plurality of inside neutron shields 15a arranged in the surroundings of the reflector aggregate 20; a cylindrical core barrel 16 which surrounds the whole of the plurality of neutron shields 15a; and a drive mechanism for the reflector control. The reflector aggregate 20 has: a reflector element which reflects a neutron from the core fuel aggregate 11 on the core side; a cavity part which is arranged above the reflector element to leak the neutron to the outside of the core; a coupling mechanism for coupling the reflector element to the cavity part; a guide tube which includes a space in which the reflector element and the cavity part go in and out; and a connection part which connects between the drive mechanism and the cavity part.
    • 要解决的问题:即使在由于植物的寿命延长而在高照射后也不必更换芯筒。解决方案:快速反射器,其通过在垂直方向上移动中子反射器来执行用于控制芯的反应性的反射器控制 包括:核心燃料骨料11; 设置在核心燃料组合体11的中心的中子吸收体12; 布置在核心燃料聚集体11周围的反射器组件20; 布置在反射器集合体20的周围的多个内部中子屏蔽15a; 环绕整个多个中子屏蔽15a的圆筒形芯筒16; 以及用于反射器控制的驱动机构。 反射器聚集体20具有:反射器元件,其将来自核心燃料聚集体11的中子反射到芯侧; 空腔部分,其布置在反射器元件上方以将中子泄漏到芯的外部; 用于将反射器元件耦合到空腔部分的联接机构; 引导管,其包括反射器元件和空腔部分进出的空间; 以及连接在驱动机构和空腔部之间的连接部。