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    • 1. 发明专利
    • In-pile structure of fast reactor
    • 快速反应器的内部结构
    • JP2011242169A
    • 2011-12-01
    • JP2010112459
    • 2010-05-14
    • Toshiba Corp株式会社東芝
    • HASEGAWA KATSUSHIINATOMI TAKANARIARIYOSHI MASAHIKOTSUBOI YASUSHISAKAI TOSHIRO
    • G21C1/02G21C15/02
    • Y02E30/34
    • PROBLEM TO BE SOLVED: To propose a pressurized water reactor capable of improving uniformity of distribution of coolant flow at the inlet to a reactor core to suppress a change in the flow of coolant that flows into the reactor core.SOLUTION: A fast reactor 1 includes an upper support base 16 and a lower support base 17 that are provided on a body portion 3b of a reactor vessel 3 having a closed-end cylindrical shape; a reactor core 7 that is accommodated in the reactor vessel; a reactor core barrel 8 that surrounds the reactor core 7; a neutron shield 12 that is provided at a position closer to the inner surface of the reactor vessel 3 than the reactor core barrel 8; and a reactor core support structure 15. The reactor core support structure 15 is produced by integrally forming: an annular upper support plate 35 that is fixed on the upper support base 16; a support cylinder 36 that is suspended from an inner edge portion of the upper support plate 35; and a circular lower support plate 37 that is provided at the lower edge portion of the support cylinder 36, is in contact with the lower support base 17, and supports the reactor core 7, reactor core barrel 8 and neutron shield 12.
    • 要解决的问题:提出一种能够改善反应堆芯入口处冷却剂流分布均匀性的压水反应堆,以抑制流入反应堆堆芯的冷却剂流动的变化。 解决方案:快速反应器1包括设置在具有封闭端圆筒形状的反应器3的主体部分3b上的上支撑基座16和下支撑基座17; 容纳在反应堆容器中的反应堆堆芯7; 围绕反应堆堆芯7的反应堆芯筒8; 设置在比反应堆芯筒8更靠近反应容器3的内表面的位置处的中子屏蔽12; 反应堆芯支撑结构15通过一体地形成:固定在上支撑基座16上的环形上支撑板35而制成; 从上支撑板35的内缘部悬挂的支撑筒体36; 并且设置在支撑筒36的下边缘部分处的圆形下支撑板37与下支撑基座17接触,并且支撑反应堆芯7,反应堆芯筒8和中子屏蔽12。 版权所有(C)2012,JPO&INPIT
    • 2. 发明专利
    • Reflector control type fast reactor and its neutron reflector
    • 反射器控制型快速反应器及其中性反射器
    • JP2005233751A
    • 2005-09-02
    • JP2004042822
    • 2004-02-19
    • Toshiba Corp株式会社東芝
    • YAMAOKA MITSUAKIMORIKI YASUYUKITSUBOI YASUSHI
    • G21C7/28G21C11/06
    • Y02E30/34Y02E30/39
    • PROBLEM TO BE SOLVED: To reduce a time variation in reactivity of a fast reactor of reflector control type without depending on the control of elevation speed of the reflector and the control of supply water flow rate.
      SOLUTION: The reflector control type fast reactor controlling a reactivity of a core 2 by moving up and down the neutron reflectors 25 and 26 placed outside the core 2 submerged in liquid metal coolant and controlling a leak of neutrons out of the core 2. The neutron reflectors 25 and 26 should be gradually moved upward so as to match a reactivity variation by fuel burning, and at least a part of the lower region 26 of the neutron reflector is a high reflection region with higher reflection capability of fast neutron than another region 25. The higher reflection region 26 is in the range of 1/4 to 1/2 from the lower end of the neutron reflector.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了减少反射器控制型快速反应器的反应性的时间变化,而不依赖于反射器的升高速度的控制和供水流量的控制。 解决方案:反射器控制型快堆通过将放置在芯体2外部的中子反射器25和26上下移动来控制芯体2的反应性,浸没在液态金属冷却剂中并控制中子从芯2中泄漏 中子反射器25和26应逐渐向上移动,以通过燃料燃烧来匹配反应性变化,并且中子反射器的下部区域26的至少一部分是具有较快的中子反射能力的高反射区域 另一区域25.较高反射区域26距中子反射器的下端的1/4至1/2的范围内。 版权所有(C)2005,JPO&NCIPI
    • 4. 发明专利
    • Reflector control type fast reactor, and reflector used for the same
    • 反射器控制型快速反应器和反射器
    • JP2011080886A
    • 2011-04-21
    • JP2009234019
    • 2009-10-08
    • Toshiba Corp株式会社東芝
    • MORIKI YASUYUKIKAWASHIMA MASATOSHITSUBOI YASUSHI
    • G21C7/28
    • Y02E30/34Y02E30/39
    • PROBLEM TO BE SOLVED: To improve the reliability of a cavity of a reflector for a fast reactor.
      SOLUTION: A reflector used for a reflector control type fast reactor is provided with a neutron reflection part and a cavity 42 disposed at the upper end of the neutron reflection part. The cavity 42 is divided into a plurality of sections by dividing structural materials 44. Part of these sections is filled with He or the like and has a lower fast neutron reflection capability than coolants. The other sections have a lower fast neutron reflection capability or a higher neutron absorption capability than coolants due to B
      4 C or the like provided therein.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提高用于快速反应器的反射器的空腔的可靠性。 解决方案:用于反射器控制型快堆的反射器设置有中子反射部分和设置在中子反射部分上端的空腔42。 空腔42通过分割结构材料44被分成多个部分。这些部分的一部分填充有He等,并且具有比冷却剂更低的快中子反射能力。 其他部分由于其中提供的B 4℃等而具有比冷却剂更低的快中子反射能力或更高的中子吸收能力。 版权所有(C)2011,JPO&INPIT
    • 5. 发明专利
    • Passive cooling system for liquid metal cooled reactor
    • 液体金属冷却反应器被动冷却系统
    • JP2011021901A
    • 2011-02-03
    • JP2009164558
    • 2009-07-13
    • Toshiba Corp株式会社東芝
    • KIKKO DAIGOKOMITA HIDEOINATOMI TAKAYATSUBOI YASUSHI
    • G21C15/18G21C1/02G21C13/00
    • Y02E30/34Y02E30/35
    • PROBLEM TO BE SOLVED: To provide a passive cooling system for a liquid metal cooled reactor which is free from the failure in a passive cooling function even if the air temperature in the vicinity of a reactor building rises due to an accident around it and the like. SOLUTION: In the passive cooling system 2 which cools by releasing a gas outside by way of an exhaust pipe 115 and an air exhaust vent 116 after forming a downward flow passage 113 of a gas cooling passage 111 between heat collectors 112, provided between a containment vessel 105 containing a reactor vessel 102 and a silo 106, and the silo 106 and an upward flow passage 114 between the heat collectors 112 and the containment vessel 105, respectively, introducing the outside air by way of air intakes 7 and an intake pipe 8 to the downward flow passage 113 and allowing it to flow down and to circulation through the upward flow passage 114, the air intakes 7 are laid out at some clearances both to each other and to the air exhaust vent 116 and also at a prescribed or longer distance from the containment vessel 105 which is insusceptible to the impact of an aircraft accident and the like in the vicinity of the containment vessel 105. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供一种液体金属冷却反应器的被动冷却系统,其即使在反应堆建筑物附近的空气温度由于其周围的事故而升高也没有被动冷却功能的故障 等等。 解决方案:在被冷却系统2中,其通过在集热器112之间形成气体冷却通道111的向下流动通道113之后通过排气管115和排气口116释放气体进行冷却, 在容纳反应堆容器102的密闭容器105和筒仓106之间,以及筒仓106和集热器112和收容容器105之间的向上流动通道114分别通过进气口7引入外部空气和 进气管8到下流道113并允许其向下流动并通过向上的流动通道114循环,进气口7以一定间隙布置在彼此和排气口116之间, 从安全壳105的规定或更长的距离,其不容易受到在安全壳105附近的飞机事故等的影响。版权所有(C)2011,JPO&INPIT
    • 7. 发明专利
    • Nuclear fuel assembly
    • 核燃料装配
    • JP2007178178A
    • 2007-07-12
    • JP2005374775
    • 2005-12-27
    • Central Res Inst Of Electric Power IndToshiba Corp株式会社東芝財団法人電力中央研究所
    • KOGA TOMONARINISHIMURA SATOSHIKINOSHITA IZUMITSUBOI YASUSHINAKAGAWA MASATOSHI
    • G21C3/322G21C3/33
    • G21C3/322G21C3/34Y02E30/35Y02E30/38
    • PROBLEM TO BE SOLVED: To provide a nuclear fuel assembly of high thermal efficiency, with its performance stable during its useful life, and with its coolant efficiently flowing on the side of inside-disposed fuel pins while preventing the coolant from unnecessarily flowing through a peripheral part of the fuel assembly.
      SOLUTION: This nuclear fuel assembly is equipped with: a wrapper tube 2 comprising an entrance nozzle 4 for thereinto introducing the coolant and a handling head 4 for operation and therein storing the plurality of fuel pins; grids 9 disposed in this wrapper tube for radially supporting the fuel pins 5; and a liner tube 8 inserted into the wrapper tube for fixing/holding the respective grids in the axial direction of the wrapper tube. As to major heat generating lengths of the fuel pins, a peripheral-flow suppressing body 12 is located between the fuel pins and the wrapper tube.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供具有高热效率的核燃料组件,其在其使用寿命期间的性能稳定,并且其冷却剂在内部布置的燃料销的侧面有效地流动,同时防止冷却剂不必要地流动 通过燃料组件的周边部分。 解决方案:该核燃料组件配备有:包装管2,包括用于引入冷却剂的入口喷嘴4和用于操作的操作头4,并且其中存储多个燃料销; 布置在该包装管中的用于径向支撑燃料销5的网格9; 以及插入包装管中的衬管8,用于在包裹管的轴向上固定/保持各个格栅。 对于燃料销的主要发热长度,周边流动抑制体12位于燃料销和包裹管之间。 版权所有(C)2007,JPO&INPIT
    • 9. 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。
    • 10. 发明专利
    • Core of fast reactor
    • 快速反应堆核心
    • JP2012103164A
    • 2012-05-31
    • JP2010252985
    • 2010-11-11
    • Toshiba Corp株式会社東芝
    • MORIKI YASUYUKIYOKOYAMA TSUGIOTSUBOI YASUSHI
    • G21C5/00G21C7/28
    • Y02E30/34Y02E30/39
    • PROBLEM TO BE SOLVED: To provide a core of a fast reactor, capable of reducing the burnup reactivity of the fast reactor.SOLUTION: A core 2 of a fast reactor comprises: a cylindrical core barrel 40; core fuel assemblies 41; and special core fuel assemblies 42. The core fuel assemblies 41 are arranged in the core barrel 40 and each of the core fuel assemblies has a core fuel assembly wrapper tube 44 and core fuel assembly fuel pins 45 disposed in the inside of the core fuel assembly wrapper tube 44. Each of the special core fuel assemblies 42 is arranged in a space formed between the core barrel 40 and the core fuel assemblies 41 arranged on the outermost circumferential side in the core barrel 40 and has a special fuel assembly wrapper tube 46 formed in a shape corresponding to the shape of the space and special fuel assembly fuel pins 47 arranged in the inside of the special fuel assembly wrapper tube 46.
    • 要解决的问题:提供能够降低快堆的燃耗反应性的快速反应堆的核心。 解决方案:快堆的核心2包括:圆筒形芯筒40; 核心燃料组件41; 核心燃料组件41布置在芯筒40中,并且每个核燃料组件具有芯燃料组件包装管44和设置在核心燃料组件内部的燃料芯组件燃料销45 每个特殊的核心燃料组件42布置在形成在芯筒40和布置在芯筒40的最外周侧的核心燃料组件41之间的空间中,并且具有形成的特殊燃料组件包装管46 其形状对应于设置在特殊燃料组件包装管46内部的空间形状和特殊燃料组件燃料销47。(C)2012年,JPO&INPIT