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    • 4. 发明专利
    • Internal structure of nuclear reactor
    • 核反应堆内部结构
    • JP2012141298A
    • 2012-07-26
    • JP2011272379
    • 2011-12-13
    • Toshiba Corp株式会社東芝
    • IWAKI CHIKAKOIKEDA TATSUMIYAMAMOTO TETSUZOWATANABE KATSUNOBUABE SATORUUCHIDA KENSATO HISAKIOKUDA TAKESHIITO KIICHI
    • G21C15/02
    • G21C15/02G21C5/10G21C13/02Y02E30/32
    • PROBLEM TO BE SOLVED: To uniformize primary coolant flowing down in a downcomer in a circumferential direction and provide the uniformly distributed primary coolant to fuel assemblies.SOLUTION: The internal structure of a nuclear reactor comprises: a reactor pressure vessel 1 to which multiple inlet nozzles 4 are connected; a core barrel 3 surrounding a number of fuel assemblies 2; a downcomer 6 formed between the reactor pressure vessel 1 and the core barrel 3; and a radial key 23 which is arranged at a lower part of the downcomer 6 and positions the core barrel 3 and the reactor pressure vessel 1. The radial key 21 includes an inside member provided on a side of the core barrel 3, and an outside member provided on a side of the reactor pressure vessel 1, and a flow path is provided between the outside member and the inside member.
    • 要解决的问题:使在下降管中沿周向向下流动的一次冷却剂均匀化并且向燃料组件提供均匀分布的一次冷却剂。 解决方案:核反应堆的内部结构包括:多个入口喷嘴4连接的反应堆压力容器1; 围绕多个燃料组件2的芯筒3; 形成在反应堆压力容器1和芯筒3之间的降液管6; 以及设置在降液管6的下部并且定位芯筒3和反应堆压力容器1的径向键23.径向键21包括设置在芯筒3的一侧的内部构件和外部 设置在反应堆压力容器1的一侧,并且在外部构件和内部构件之间设置有流动路径。 版权所有(C)2012,JPO&INPIT
    • 6. 发明专利
    • Natural circulation type boiling water reactor
    • 自然循环型锅炉水反应堆
    • JP2007047090A
    • 2007-02-22
    • JP2005233750
    • 2005-08-11
    • Toshiba Corp株式会社東芝
    • ABE NOBUAKITAKEUCHI YUTAKATAKIGAWA YUKIONAKAMARU MIKIHIDE
    • G21C15/26G21C15/02
    • G21C1/084G21C15/02G21C15/26G21Y2002/30G21Y2004/30Y02E30/31
    • PROBLEM TO BE SOLVED: To provide a natural circulation type boiling water reactor improving stability by shortening the region of gas-liquid two-phase flow and resolving transport delay in the separate chimneys.
      SOLUTION: The natural circulation type boiling water reactor 10 of this invention comprises a plurality of separate chimneys 15 at upper core, and a multitude of fuel assemblies 13 are installed in the core 14. The natural circulation type boiling water reactor 10 is provided with a structure for equalizing the pressure in the separate chimneys 15 in the rectangular cylinder grid plate of the separated chimneys at the core 14 outlet. With this pressure equalizing structure, the pressure in the separated chimney 15 parts is equalized.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种天然循环型沸水反应器,其通过缩短气液两相流的区域并解决分离的烟囱中的运输延迟来提高稳定性。 解决方案:本发明的自然循环型沸水反应器10在上部芯部包括多个单独的烟囱15,并且多个燃料组件13安装在核心14中。自然循环型沸水反应器10是 设置有用于均衡在核心14出口处分离的烟囱的矩形缸格栅板中的单独烟囱15中的压力的​​结构。 利用该均压结构,分离的烟囱15部分中的压力相等。 版权所有(C)2007,JPO&INPIT