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公开(公告)号：US20180356021A1
公开(公告)日：2018-12-13
申请号：US15735374
申请日：2016-06-22
IPC分类号： F16L39/00 , G21C21/00 , F16L59/065 , F16L37/088
CPC分类号： F16L39/005 , F16L9/19 , F16L9/20 , F16L23/12 , F16L37/088 , F16L59/065 , F28D7/106 , F28F9/26 , F28F13/06 , F28F2250/04 , F28F2250/10 , G21C1/20 , G21C3/322 , G21C3/328 , G21C15/02 , G21C21/00
摘要： A cross-over fluid coupling includes a first coupling end and a second coupling end. A plurality of first conduits have inner ends disposed toward the first coupling end and outer ends spaced apart from the inner end toward the second coupling end and being outboard of the inner end. A plurality of second conduits have outer ends that are disposed toward the first coupling end and positioned laterally outboard of the inner end of at least one of the first conduits, and inner ends that are spaced apart from the outer end toward the second coupling end in the axial direction and is laterally inboard of the outer end of the at least one of the first conduits.
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2.发明申请公开(公告)号：US20180090233A1
公开(公告)日：2018-03-29
申请号：US15715936
申请日：2017-09-26
发明人： Kouji HIRAIWA , Rei Kimura , Shungo Sakurai , Rie Aizawa , Goro Yanase , Shinichiro Kawamura
摘要： Light water reactor fuel assemblies each comprises: light water reactor fuel rods that extend longitudinally, contain nuclear fuel materials including enriched uranium, and are arranged parallel to each other; and burnable poison containing fuel rods that extend longitudinally, contain nuclear fuel materials whose main component is uranium that is lower in enrichment than the enriched uranium of the light water reactor fuel rods, and burnable poison, and are arranged in a lattice pattern together with the light water reactor fuel rods. The assemblies are arranged parallel to each other and in a lattice pattern. An initial value of a first enrichment of the enriched uranium is set in such a way that the first enrichment of the enriched uranium at an end of each operation cycle is greater than a predetermined value.
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公开(公告)号：US20170221590A1
公开(公告)日：2017-08-03
申请号：US15518920
申请日：2015-10-12
申请人： THOR ENERGY AS
CPC分类号： G21C3/328 , G21C3/045 , G21C3/16 , G21C3/326 , G21C3/58 , G21C3/623 , G21C7/005 , G21C7/06 , Y02E30/31 , Y02E30/38 , Y02E30/39
摘要： The present invention concerns a fuel assembly for a nuclear power boiling water reactor. The fuel assembly comprises fuel rods. At least 95% of the fuel rods comprise nuclear fuel material in the form of U enriched in 235U. At least 20% of the fuel rods belong to a first set of fuel rods. The fuel rods in this first set comprise both U enriched in 235U and Th. The first set comprises a first and a second subset of fuel rods. The ratio, with regard to weight, between Th and U, in each fuel rod of said first subset, is higher than the ratio, with regard to weight, between Th and U, in each fuel rod of said second subset. The invention also concerns a nuclear power boiling water reactor and a manner of operating such a reactor.
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公开(公告)号：US09646725B2
公开(公告)日：2017-05-09
申请号：US13389246
申请日：2010-07-21
申请人： Dorothee Henras , Song Hui Zheng
发明人： Dorothee Henras , Song Hui Zheng
摘要： A method is provided for operating a nuclear reactor. The method includes operating the nuclear reactor for at least one plutonium equilibrium cycle during which the core contains plutonium-equilibrium nuclear fuel assemblies; subsequently, operating the reactor for transition cycles, at least some of the plutonium-equilibrium nuclear fuel assemblies being progressively replaced with transition nuclear fuel assemblies and then with uranium-equilibrium nuclear fuel assemblies; and then operating the nuclear reactor for at least one uranium equilibrium cycle.
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公开(公告)号：US20160035441A1
公开(公告)日：2016-02-04
申请号：US14856084
申请日：2015-09-16
IPC分类号： G21C3/02
CPC分类号： G21C1/20 , G21C3/08 , G21C3/28 , G21C3/322 , G21C3/326 , G21C3/328 , G21C3/58 , G21C21/10 , Y02E30/38
摘要： A fuel assembly for use in a core of a nuclear power reactor. The assembly includes a frame shaped and configured to fit within the nuclear reactor internal core structure; and a plurality of helically twisted fuel elements supported by the frame in a fuel rod bundle. Each of the fuel elements includes fissile material. When viewed in a cross-section that is perpendicular to an axial direction of the fuel assembly, the outermost fuel elements of the fuel rod bundle define a substantially circular perimeter. Other features, and a nuclear reactor, are also described.
摘要翻译： 用于核动力堆核心的燃料组件。 组件包括形状并构造成装配在核反应堆内部核心结构内的框架; 以及由燃料棒束中的框架支撑的多个螺旋扭转的燃料元件。 每个燃料元件都包括裂变材料。 当在垂直于燃料组件的轴向方向的横截面中观察时，燃料棒束的最外面的燃料元件限定基本圆形的周边。 还描述了其他特征和核反应堆。
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公开(公告)号：US08644444B2
公开(公告)日：2014-02-04
申请号：US12935198
申请日：2009-03-30
申请人： Matthias Dietrich , Michael Liebler , Hans-Joachim Lippert , Roland Rink , Jens Schäfer , Thomas Schubert
发明人： Matthias Dietrich , Michael Liebler , Hans-Joachim Lippert , Roland Rink , Jens Schäfer , Thomas Schubert
IPC分类号： G21C3/32
CPC分类号： G21C3/328 , G21C3/335 , G21Y2002/201 , G21Y2002/401 , G21Y2004/30 , Y02E30/31 , Y02E30/38
摘要： An assembly of the type having a water channel extending along a longitudinal axis and having an upper section of larger cross-section area than a lower section and at least one fuel rod receiving groove extending longitudinally on the outer surface of the lower section, fuel rods extending longitudinally and disposed around the water channel and fixing members for fixing at least one fuel rod to the water channel in the at least one groove below the upper section.According to one aspect of the invention, the at least one groove extends along the upper section such that a fuel rod received in fixing members is longitudinally extractable or insertable from the upper end side of the fuel assembly.
摘要翻译： 该类型的组件具有沿着纵向轴线延伸的水通道，并且具有比下部分更大的横截面面积的上部部分和在下部分的外表面上纵向延伸的至少一个燃料棒容纳槽，燃料棒 纵向延伸并设置在水通道周围并且用于将至少一个燃料棒固定到上部下方的至少一个槽中的水通道的固定构件。 根据本发明的一个方面，所述至少一个凹槽沿着上部部分延伸，使得容纳在固定构件中的燃料棒可纵向地从燃料组件的上端侧提取或插入。
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7.发明申请NUCLEAR FUEL CONTAINING RECYCLED AND DEPLETED URANIUM, AND NUCLEAR FUEL BUNDLE AND NUCLEAR REACTOR COMPRISING SAME 审中-公开包含回收和分离的铀的核燃料和包含相同的核燃料组件和核反应堆公开(公告)号：US20130308741A1
公开(公告)日：2013-11-21
申请号：US13885582
申请日：2010-11-15
摘要： Fuel bundles for a nuclear reactor are described and illustrated, and in some cases includes fuel elements each having a first fuel component of recycled uranium; and a second fuel component of at least one of depleted uranium and natural uranium blended with the first fuel component, wherein the blended first and second fuel components have a first fissile content of less than 1.2 wt % of 235U. Other fuel bundles are also described and illustrated, and include a first fuel element including recycled uranium, the first fuel element having a first fissile content of no less than 0.72 wt % of 235U; and a second fuel element including at least one of depleted uranium and natural uranium, the second fuel element having a second fissile content of no greater than 0.71 wt % of 235U.
摘要翻译： 描述和说明了用于核反应堆的燃料束，并且在一些情况下包括各自具有再循环铀的第一燃料成分的燃料元件; 以及与所述第一燃料组分混合的贫化铀和天然铀中的至少一种的第二燃料组分，其中所述混合的第一和第二燃料组分的第一裂变含量小于235U的1.2wt％。 还描述和示出了其它燃料束，并且包括包括再循环铀的第一燃料元件，第一燃料元件具有不小于235U的0.72wt％的第一裂变含量; 以及包括贫化铀和天然铀中的至少一种的第二燃料元件，所述第二燃料元件的第二可裂变含量不大于235U的0.71wt％。
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公开(公告)号：US08311180B2
公开(公告)日：2012-11-13
申请号：US12332376
申请日：2008-12-11
申请人： Takeshi Mitsuyasu , Motoo Aoyama , Tetsushi Hino
发明人： Takeshi Mitsuyasu , Motoo Aoyama , Tetsushi Hino
IPC分类号： G21C3/00
摘要： A fuel assembly, comprising: a plurality of first fuel rods including uranium and not including a burnable poison; a plurality of second fuel rods including said uranium and said burnable poison; and a water rod; wherein said second fuel rods are placed at corners of an outermost layer of a fuel rod array; other second fuel rods are placed, in said outermost layer, adjacent to said second fuel rods placed at said corners; and other second fuel rods are placed adjacent to said water rod.
摘要翻译： 一种燃料组件，包括：多个包括铀的第一燃料棒，不包括可燃毒物; 包括所述铀和所述可燃毒物的多个第二燃料棒; 和水棒; 其中所述第二燃料棒放置在燃料棒阵列的最外层的拐角处; 其他第二燃料棒在所述最外层中与放置在所述角部处的所述第二燃料棒相邻; 并且其他第二燃料棒放置在与所述水棒相邻的位置。
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9.发明申请公开(公告)号：US20120163525A1
公开(公告)日：2012-06-28
申请号：US13389243
申请日：2010-07-21
申请人： Dorothee Henras , Song Hui Zheng
发明人： Dorothee Henras , Song Hui Zheng
IPC分类号： G21C19/20
摘要： A method is provided for operating a nuclear reactor. The method includes operating the nuclear reactor for an initial cycle during which a core contains initial nuclear fuel assemblies; then operating the nuclear reactor for transition cycles, at least some of the initial nuclear fuel assemblies being progressively replaced, during the replacement steps preceding the transition cycles, with transition nuclear fuel assemblies or with plutonium-equilibrium nuclear fuel assemblies; and then operating the nuclear reactor for at least one plutonium equilibrium cycle during which the core contains only plutonium-equilibrium nuclear fuel assemblies.
摘要翻译： 提供了一种操作核反应堆的方法。 该方法包括操作核反应堆的初始循环，其中核心包含初始核燃料组件; 然后操作核反应堆进行过渡循环，在过渡循环之前的替换步骤中，过渡核燃料组件或与钚平衡的核燃料组件一起，至少部分初始核燃料组件逐渐被替换; 然后操作核反应堆至少一个钚平衡循环，在此期间核心仅包含钚平衡核燃料组件。
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公开(公告)号：US20120140868A1
公开(公告)日：2012-06-07
申请号：US13173853
申请日：2011-06-30
申请人： Masayuki Kauchi , Sorouch Kheradmand , Yasuo Ogura
发明人： Masayuki Kauchi , Sorouch Kheradmand , Yasuo Ogura
IPC分类号： G21C3/00
CPC分类号： G21C3/326 , G21C3/3265 , G21C3/328 , G21C7/005 , G21C7/04 , Y02E30/32 , Y02E30/38 , Y02E30/39
摘要： [Problem to be Solved] To provide a fuel rod and a fuel assembly that can make thermal power uniform along an axial direction and lengthen an operation cycle.[Solution] In a first fuel rod 41 and a second fuel rod 42 each containing nuclear fuel and burnable poison for reducing a nuclear reaction of the nuclear fuel to be loaded in a pressurized water reactor, the gadolinium content rate of the first fuel rod 41 and the second fuel rod 42 is increased from both end portions toward a center portion in an axial direction. In a fuel assembly including the first fuel rod 41 and the second fuel rod 42, the first fuel rod 41 and the second fuel rod 42 are loaded in such a manner that a large percentage of the second fuel rod 42 that is a low-gadolinium fuel rod is arranged on an outer side than the first fuel rod 41 that is a high-gadolinium fuel rod.
摘要翻译： [待解决的问题]提供能够使热功率沿轴向均匀的燃料棒和燃料组件，并延长操作周期。 [解决方案]在第一燃料棒41和第二燃料棒42中，第一燃料棒41和第二燃料棒42各自含有用于减少加载在压水反应堆中的核燃料的核反应的核燃料和可燃毒物，第一燃料棒41的钆含量 第二燃料棒42从轴向两端部向中心部增大。 在包括第一燃料棒41和第二燃料棒42的燃料组件中，第一燃料棒41和第二燃料棒42以大量的作为低钆的第二燃料棒42的方式被装载 燃料棒布置在比作为高钆燃料棒的第一燃料棒41的外侧。
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