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    • 3. 发明申请
    • Core of Light Water Reactor and Fuel Assembly
    • 轻水反应堆和燃料组件的核心
    • US20120177169A1
    • 2012-07-12
    • US13411091
    • 2012-03-02
    • Renzo TakedaJunichi MiwaKumiaki Moriya
    • Renzo TakedaJunichi MiwaKumiaki Moriya
    • G21C7/00G21C3/30
    • G21C3/326G21C3/42G21C2003/3267Y02E30/38
    • A core of a light water reactor having a plurality of fuel assemblies, which are loaded in said core, having nuclear fuel material containing a plurality of isotopes of transuranium nuclides, an upper blanket zone, a lower blanket zone, and a fissile zone, in which the transuranium nuclides are contained, disposed between the upper blanket zone and the lower blanket zone, wherein a ratio of Pu-239 in all the transuranium nuclides contained in the loaded fuel assembly is in a range of 40 to 60% when burnup of the fuel assembly is 0, sum of a height of the lower blanket zone and a height of the upper blanket zone is in a range of 250 to 600 mm, and the height of said lower blanket zone is in a range of 1.6 to 12 times the height of the upper blanket zone.
    • 具有多个燃料组件的轻水反应堆的核心,其装载在所述芯体中,具有含有多个氮氧化物的多个同位素的核燃料材料,上覆层区域,下覆盖区域和裂变区域 其中包含超氧化物核素,其设置在上覆盖区域和下覆盖层区域之间,其中,当燃烧所述载体燃料组件时,包含在所述负载的燃料组件中的所有经核素核素中的Pu-239的比例在40至60%的范围内 燃料组件为0,下橡皮布区域的高度与上覆层区域的高度之和在250至600mm的范围内,并且所述下橡皮布区域的高度在1.6至12倍的范围内 上层毯的高度。
    • 7. 发明授权
    • Natural circulation reactor
    • 自然循环反应器
    • US5091143A
    • 1992-02-25
    • US363877
    • 1989-06-09
    • Hitoshi TateFumio TotsukaTetuo HoriuchiKumiaki Moriya
    • Hitoshi TateFumio TotsukaTetuo HoriuchiKumiaki Moriya
    • G21C1/08G21C15/18G21C15/26
    • G21C15/18G21C1/084Y02E30/31
    • The invention is directed to a natural circulation reactor having a reactor pressure vessel with a core housed therein, the core being disposed in such a location that a top portion of the core is submerged under coolant even in the event that any pipe connected to the reactor pressure vessel is broken and then a coolant level in the reactor pressure vessel is lowered due to flushing. This permits the reactor core to be submerged under coolant even in the event of breakage of any pipe connected to the reactor pressure vessel, ensuring to eliminate a possibility that the top portion of the reactor core is exposed temporarily during an intermediate period before actuation of an accumulated coolant injection system to start injecting of the coolant into the reactor pressure vessel after the end of flushing.
    • 本发明涉及一种具有反应堆压力容器的自然循环反应器,其具有容纳在其中的芯体,芯部设置在芯部的顶部浸没在冷却剂下方的位置,即使在连接到反应器的任何管道 压力容器破裂,然后由于冲洗而使反应堆压力容器中的冷却剂水平降低。 这使得即使在连接到反应堆压力容器的任何管道断裂的情况下,反应堆芯也被浸没在冷却剂下,确保消除了反应堆芯的顶部在启动之前的中间期期间临时暴露的可能性 累积冷却剂喷射系统,以便在冲洗结束之后开始将冷却剂注入反应堆压力容器。
    • 8. 发明授权
    • Core of light water reactor and fuel assembly
    • 轻水反应堆和燃料组件的核心
    • US09047994B2
    • 2015-06-02
    • US12978198
    • 2010-12-23
    • Renzo TakedaJunichi MiwaKumiaki Moriya
    • Renzo TakedaJunichi MiwaKumiaki Moriya
    • G21C1/04G21C19/44G21C3/328G21C5/00
    • G21C3/328G21C1/084G21C3/42G21C5/00G21C5/02G21C19/44Y02E30/38Y02W30/882
    • A core of a light water reactor has a plurality of fuel assemblies. The fuel assemblies include a plurality of fuel rods in which a lower end is supported by a lower tie-plate and an upper end is supported by an upper tie-plate. The fuel rods form plenums above a nuclear fuel material zone and have a neutron absorbing material filling zone under the nuclear fuel material zone. Neutron absorbing members attached to the upper tie-plate are disposed between mutual plenums of the neighboring fuel rods above the nuclear fuel material zone. The neutron absorbing members have a length of 500 mm and are positioned at a distance of 300 mm from the nuclear fuel material zone. Even if the overall core is assumed to become a state of 100% void, no positive reactivity is inserted to the core.
    • 轻水反应堆的核心具有多个燃料组件。 燃料组件包括多个燃料棒,其中下端由下连接板支撑,上端由上连接板支撑。 燃料棒在核燃料材料区之上形成集气室,并在核燃料材料区下方具有中子吸收材料填充区。 附接到上连接板的中子吸收构件设置在核燃料材料区域上方的相邻燃料棒的相互增压室之间。 中子吸收构件具有500mm的长度并且位于与核燃料材料区300mm的距离处。 即使假设整个核心成为100%空白的状态,也不会向核心插入积极的反应性。
    • 10. 发明申请
    • Core of a Boiling Water Reactor
    • 沸水堆的核心
    • US20090196391A1
    • 2009-08-06
    • US12026634
    • 2008-02-06
    • Junichi MiwaRenzo TakedaTakeshi MitsuyasuKumiaki Moriya
    • Junichi MiwaRenzo TakedaTakeshi MitsuyasuKumiaki Moriya
    • G21C19/28
    • G21C3/326G21C5/00Y02E30/31Y02E30/38
    • A core of a boiling water reactor as a burner type core of the boiling water reactor having a ratio of 3 or more of number of fuel assemblies loaded in the core to number of control rods installed in the nuclear reactor and using an oxide of low enriched uranium having a mean enrichment of the fuel assemblies of 3 wt % to 8 wt % or a mixed oxide having a mean fissile plutonium enrichment of the fuel assemblies of 2 wt % to less than 7 wt %,wherein a mean weight of at least one of uranium and plutonium included in a unit volume of a core region is 2.25 to 3.4 kg/l when load of the fuel assemblies having a burnup of 0 into the core is finished, anda mean thickness of the channel box of the fuel assemblies is 2.10 to 3.55 mm.
    • 作为沸水反应器的燃烧器型核心的沸水反应堆的核心,其中装载在核心中的燃料组件的数量与安装在核反应堆中的控制棒的数量的比例为3以上,并且使用低浓度的氧化物 具有3重量%至8重量%的燃料组件的平均富集的铀或燃料组件的平均裂变钚富集浓度为2重量%至小于7重量%的混合氧化物,其中平均重量为至少一个 包含在核心区域的单位体积中的铀和钚的总量为2.25至3.4kg / l,当燃料组件的燃料组件的负荷为零时,完成燃料组件的通道箱的平均厚度为 2.10到3.55毫米。