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    Guide thimble of dual tube type structure nuclear fuel assembly
    2.
    发明授权
    Guide thimble of dual tube type structure nuclear fuel assembly 有权
    双管式结构核燃料组件导向套管

    公开(公告)号：US08279995B2

    公开(公告)日：2012-10-02

    申请号：US12228567

    申请日：2008-08-13

    申请人： Kyung Ho Yoon ,  Jae Yong Kim ,  Dong Seok Oh ,  Young Ho Lee ,  Kang Hee Lee ,  Hyung Kyu Kim

    发明人： Kyung Ho Yoon ,  Jae Yong Kim ,  Dong Seok Oh ,  Young Ho Lee ,  Kang Hee Lee ,  Hyung Kyu Kim

    IPC分类号： G21C1/04

    CPC分类号： G21C3/322 ,  G21C3/326 ,  G21C7/103 ,  Y02E30/38 ,  Y02E30/39

    摘要： Disclosed herein is a guide thimble of a nuclear fuel assembly, which is capable of improving the cooling performance and the stability of a nuclear fuel, preventing a flow split in dual-cooling nuclear fuel rod and guide thimble sub channels for obtaining high combustion degree and high power, and minimizing a neutron absorption section in a reaction degree region. Since the guide thimble having the dual tube type structure is adopted, a flow split in the fuel rod and guide thimble sub channels can be reduced, and the degradation in performance of nuclear fuel due to increase of a neutron absorption section can be prevented. In order for compatibility with an existing control rod, a typical guide tube is used as an inner guide thimble, and an outer guide thimble is provided outside the inner guide thimble. Thus, the guide thimble has the dual tube type structure as a whole, and is coupled to the upper and lower end fittings so that it can prevent a flow unbalance due to the flow split in the fuel rod and guide thimble sub channels.

    摘要翻译： 本文公开了一种核燃料组件的导向套管，其能够改善核燃料的冷却性能和稳定性，防止双冷核燃料棒和引导套管子通道中的分流以获得高燃烧度， 高功率，并使反应程度区域中的中子吸收部分最小化。 由于采用具有双管式结构的导向套管，因此可以减少燃料棒和导向套管副通道中的流动分流，并且可以防止由于中子吸收部分的增加而引起的核燃料性能的劣化。 为了与现有的控制杆的兼容性，使用典型的导管作为内导向套管，并且外导向套管设置在内引导套管的外部。 因此，导向套管作为整体具有双管式结构，并且联接到上端和下端配件，使得其可以防止由于燃料棒和引导套管子通道中的流动分流而导致的流量不平衡。

    PERFORATED PLATE SUPPORT FOR DUAL-COOLED SEGMENTED FUEL ROD
    3.
    发明申请
    PERFORATED PLATE SUPPORT FOR DUAL-COOLED SEGMENTED FUEL ROD 有权
    双冷却分段燃油柱的执行板支撑

    公开(公告)号：US20100172460A1

    公开(公告)日：2010-07-08

    申请号：US12421829

    申请日：2009-04-10

    申请人： Kyung-Ho Yoon ,  Hyung-Kyu Kim ,  Jae-Yong Kim ,  Young-Ho Lee ,  Kang-Hee Lee ,  Tae-Hyun Chun ,  Wang-Kee In ,  Dong-Seok Oh ,  Chang Hwan Shin ,  Kun-Woo Song

    发明人： Kyung-Ho Yoon ,  Hyung-Kyu Kim ,  Jae-Yong Kim ,  Young-Ho Lee ,  Kang-Hee Lee ,  Tae-Hyun Chun ,  Wang-Kee In ,  Dong-Seok Oh ,  Chang Hwan Shin ,  Kun-Woo Song

    IPC分类号： G21C3/34

    CPC分类号： G21C3/322 ,  G21C3/3305 ,  G21C3/3315 ,  Y02E30/38

    摘要： A perforated plate support supports dual-cooled fuel rods, each of which has concentric outer and inner tubes and is coupled with upper and lower end plugs at upper and lower ends thereof, and guide thimbles, each of which is used as a passage for a control rod. The perforated plate support is formed as a support plate having the shape of a flat plate, which includes internal channel holes, each of which has a diameter corresponding to an outer diameter of the inner tube, guide thimble holes, each of which has a diameter corresponding to an outer diameter of the guide thimble, and sub-channel holes around each internal channel hole. The upper or lower end of the dual-cooled fuel rod is coupled to the support plate such that the outer diameter of the inner tube is matched with the diameter of the internal channel hole.

    摘要翻译： 多孔板支撑件支撑双重冷却的燃料棒，每个燃料棒具有同心的外管和内管，并且在其上端和下端与上端和下端塞连接，导向套管每一个用作通道 控制棒。 多孔板支撑件形成为具有平板形状的支撑板，该支撑板包括内部通道孔，每个内部通道孔的直径对应于内部管的外径，导向套管孔各自具有直径 对应于导向套管的外径，以及在每个内部通道孔周围的子通道孔。 双冷却燃料棒的上端或下端与支撑板相连，使得内管的外径与内通道孔的直径相匹配。

    Duct-type spacer grid with swirl flow vanes for nuclear fuel assemblies
    4.
    发明授权
    Duct-type spacer grid with swirl flow vanes for nuclear fuel assemblies 有权
    具有用于核燃料组件的旋流流动叶片的管道型间隔栅格

    公开(公告)号：US06393087B1

    公开(公告)日：2002-05-21

    申请号：US09439713

    申请日：1999-11-12

    申请人： Dong-Seok Oh ,  Tae-Hyun Chun ,  Wang-Kee In ,  Kee-Nam Song ,  Hyung-Kyu Kim ,  Heung-Seok Kang ,  Kyung-Ho Yoon ,  Youn-Ho Jung

    发明人： Dong-Seok Oh ,  Tae-Hyun Chun ,  Wang-Kee In ,  Kee-Nam Song ,  Hyung-Kyu Kim ,  Heung-Seok Kang ,  Kyung-Ho Yoon ,  Youn-Ho Jung

    IPC分类号： G21C334

    CPC分类号： G21C3/322 ,  G21C3/344 ,  G21C3/3566 ,  G21Y2002/201 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/38

    摘要： A duct-type spacer grid for nuclear fuel assemblies is disclosed. In this spacer grid, a plurality of duct-shaped grid elements, individually having an octagonal cell, are closely arranged in parallel and are welded together, thus forming a matrix structure. The grid elements do not pass across the center of the subchannel of the assembly, thus effectively reducing pressure loss. Each of the grid elements is formed as an independent cell, and so they effectively resist against a lateral impact. A plurality of integral type swirl flow vanes, having different heights or same height, axially extend from the top of the grid to be positioned within each subchannel. The swirl flow vanes are bent outwardly, and so they do not contact the fuel rods during an insertion of the fuel rods into the cells. In the spacer grid, the fuel rods are supported within the cells by line contact springs without using any dimple. The spacer grid thus uniformly distributes its spring force on the fuel rods and almost completely prevents damage of the fuel rods due to fretting wear.

    摘要翻译： 公开了一种用于核燃料组件的导管型间隔栅格。 在这种间隔栅格中，多个具有八边形单元格的管状栅格元件被平行地紧密排列并且被焊接在一起，从而形成矩阵结构。 网格元件不会穿过组件的子通道的中心，从而有效地减少压力损失。 每个栅格元件形成为独立的单元，因此它们有效抵抗横向冲击。 具有不同高度或相同高度的多个整体式涡流流动叶片从网格的顶部轴向延伸以定位在每个子通道内。 涡流流动叶片向外弯曲，因此在将燃料棒插入单元中时它们不接触燃料棒。 在间隔网格中，燃料棒通过线接触弹簧支撑在电池内，而不使用任何凹坑。 间隔栅格因此将其弹簧力均匀地分布在燃料棒上，并几乎完全防止由于微动磨损导致燃料棒的损坏。

    DUAL-COOLED FUEL ROD'S SPACER GRIDS WITH UPPER AND LOWER CROSS-WAVY-SHAPE DIMPLE
    6.
    发明申请
    DUAL-COOLED FUEL ROD'S SPACER GRIDS WITH UPPER AND LOWER CROSS-WAVY-SHAPE DIMPLE 有权
    双冷却燃油轴间隔杯与上，下波纹形状

    公开(公告)号：US20120063562A1

    公开(公告)日：2012-03-15

    申请号：US13230439

    申请日：2011-09-12

    申请人： Chang Hwan SHIN ,  Kang Hee LEE ,  Dong-Seok OH ,  Wang Kee IN ,  Tae Hyun CHUN ,  Kun Woo SONG

    发明人： Chang Hwan SHIN ,  Kang Hee LEE ,  Dong-Seok OH ,  Wang Kee IN ,  Tae Hyun CHUN ,  Kun Woo SONG

    IPC分类号： G21C3/34

    CPC分类号： G21C3/3563 ,  G21C3/322 ,  G21C3/352 ,  Y02E30/38

    摘要： A dual-cooled fuel rod's spacer grid with upper and lower dimples, including a blocking area of a flow passage that coolant flows through is reduced and dual-cooled fuel rods are supported, and reduces a turbulent flow of the coolant as well as vibrations of the dual-cooled fuel rods, thereby lessening fretting damage done to the rods. The spacer grid includes a plurality of unit grid straps, each of which includes a body disposed in a vertical direction, an upper dimple protruding from an upper portion of the body, and a lower dimple spaced apart from the upper dimple in a downward direction and protruding from a lower portion of the body. The unit grid straps form a grid structure that have inner grid holes into which the dual-cooled fuel rods are held, and the held dual-cooled fuel rods are each supported in four directions by the upper and lower dimples.

    摘要翻译： 双冷却燃料棒的间隔栅格具有上下凹坑，包括冷却剂流过的流动通道的阻塞区域，并且双重冷却的燃料棒被支撑，并且减少了冷却剂的湍流以及振动 双冷却燃料棒，从而减轻对棒的微小损坏。 间隔网格包括多个单位网格带，每个单元网格带包括沿垂直方向设置的主体，从主体的上部突出的上凹坑以及沿着向下方向与上凹坑间隔开的下凹坑，以及 从身体的下部突出。 单元网格带形成具有内栅格孔的栅格结构，双冷却燃料棒被保持在其中，并且保持的双重冷却燃料棒通过上下凹坑各自支撑在四个方向上。

    Spacer grid for nuclear reactor fuel assemblies
    8.
    发明授权
    Spacer grid for nuclear reactor fuel assemblies 有权
    用于核反应堆燃料组件的间隔电网

    公开(公告)号：US07769125B2

    公开(公告)日：2010-08-03

    申请号：US10773733

    申请日：2004-02-05

    申请人： Kyung-Ho Yoon ,  Heung-Seok Kang ,  Hyung-Kyu Kim ,  Kee-Nam Song ,  Yeon-Ho Jung ,  Tae-Hyun Chun ,  Dong-Seok Oh ,  Wang-Kee In

    发明人： Kyung-Ho Yoon ,  Heung-Seok Kang ,  Hyung-Kyu Kim ,  Kee-Nam Song ,  Yeon-Ho Jung ,  Tae-Hyun Chun ,  Dong-Seok Oh ,  Wang-Kee In

    IPC分类号： G21C3/356

    CPC分类号： G21C3/322 ,  G21C3/352 ,  G21C3/3563 ,  G21Y2002/201 ,  G21Y2002/206 ,  G21Y2002/303 ,  G21Y2002/304 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/32 ,  Y02E30/38

    摘要： A spacer grid used for placing and supporting fuel rods in nuclear reactor fuel assemblies is disclosed. The spacer grid of this invention has a plurality of inner strips intersecting each other to form a plurality of guide tube cells and a plurality of fuel rod cells, with a plurality of mixing blades projecting upward from the inner strips at intersections of the inner strips. The spacer grid further includes a plurality of perimeter strips to encircle the intersecting inner strips. Each of the perimeter strips is fabricated with a plurality of unit intermediate strips and a plurality of unit corner strips, with a grid spring provided on each of the unit strips. The grid spring includes a vertical opening formed at a central area of each of the unit strips, a vertical support part extending vertically between the central portions of top and bottom edges of the vertical opening, and a fuel rod support part provided at a central portion of the vertical support part while being bent to have an outward rounded cross-section. The vertical support part is bent at two steps, and the fuel rod support part is bent to be in equiangular contact with each of the fuel rods, thus accomplishing a uniform contact pressure distribution when the fuel rod support part is in contact with each of the fuel rods.

    摘要翻译： 公开了一种用于将燃料棒放置和支撑在核反应堆燃料组件中的间隔栅格。 本发明的隔离栅格具有多个彼此相交的内条，以形成多个导管单元和多个燃料棒单元，多个混合叶片在内条的相交处从内条向上突出。 间隔网格还包括多个周边条，以包围相交的内条。 每个周边条带都具有多个单位中间带和多个单位角条，其中每个单位条带上均设有格栅弹簧。 格栅弹簧包括形成在每个单元条的中心区域处的垂直开口，在垂直开口的顶部和底部边缘的中心部分之间垂直延伸的垂直支撑部分，以及设置在中心部分的燃料棒支撑部分 的垂直支撑部分，同时弯曲成具有向外的圆形横截面。 垂直支撑部弯曲两步，燃料棒支撑部弯曲成与各燃料棒等角接触，从而当燃料棒支撑部与每个燃料棒接触时实现均匀的接触压力分布 燃料棒。

    POROUS PLENUM SPACER FOR DUAL-COOLED FUEL ROD
    9.
    发明申请
    POROUS PLENUM SPACER FOR DUAL-COOLED FUEL ROD 审中-公开
    用于双冷却燃料油的多孔全空间

    公开(公告)号：US20100142668A1

    公开(公告)日：2010-06-10

    申请号：US12630901

    申请日：2009-12-04

    申请人： Young Ho Lee ,  Kang Hee Lee ,  Jae Yong Kim ,  Kyung Ho Yoon ,  Hyung Kyu Kim ,  Chang Hwan Shin ,  Dong Seok Oh ,  Wang Ki In ,  Tae Hyun Chun ,  Kun Woo Song

    发明人： Young Ho Lee ,  Kang Hee Lee ,  Jae Yong Kim ,  Kyung Ho Yoon ,  Hyung Kyu Kim ,  Chang Hwan Shin ,  Dong Seok Oh ,  Wang Ki In ,  Tae Hyun Chun ,  Kun Woo Song

    IPC分类号： G21C3/04

    CPC分类号： G21C3/044 ,  G21C3/17 ,  Y02E30/40

    摘要： A porous plenum spacer is inserted into the plenum of a dual-cooled fuel rod having concentric inner and outer cladding tubes. The porous plenum spacer includes a hollow cylindrical body inserted into the annular space between the inner and outer cladding tubes. The hollow cylindrical body includes a plurality of through-holes formed in an outer circumference thereof or at least one groove formed in one of outer and inner circumferences thereof in a lengthwise direction. Pores formed by the through-holes or the grooves of the hollow cylindrical body of the porous plenum spacer are allowed to secure a space containing fission gas inevitably generated by a nuclear reaction.

    摘要翻译： 将多孔气室间隔件插入具有同心的内包壳管和外包层管的双冷却燃料棒的增压室中。 多孔气室间隔件包括插入在内包壳管和外包壳管之间的环形空间中的中空圆柱体。 中空圆柱体包括形成在其外圆周上的多个通孔或沿其长度方向形成在其外周和内周中的至少一个槽中的至少一个槽。 允许由多孔气室间隔件的中空圆柱体的通孔或凹槽形成的孔确保通过核反应不可避免地产生的包含裂变气体的空间。

    Guide thimble of dual tube type structure nuclear fuel assembly
    10.
    发明申请
    Guide thimble of dual tube type structure nuclear fuel assembly 有权
    双管式结构核燃料组件导向套管

    公开(公告)号：US20090060117A1

    公开(公告)日：2009-03-05

    申请号：US12228567

    申请日：2008-08-13

    申请人： Kyung Ho Yoon ,  Jae Yong Kim ,  Dong Seok OH ,  Young Ho Lee ,  Kang Hee Lee ,  Hyung Kyu Kim

    发明人： Kyung Ho Yoon ,  Jae Yong Kim ,  Dong Seok OH ,  Young Ho Lee ,  Kang Hee Lee ,  Hyung Kyu Kim

    IPC分类号： G21C3/34

    CPC分类号： G21C3/322 ,  G21C3/326 ,  G21C7/103 ,  Y02E30/38 ,  Y02E30/39

    摘要： Disclosed herein is a guide thimble of a nuclear fuel assembly, which is capable of improving the cooling performance and the stability of a nuclear fuel, preventing a flow split in dual-cooling nuclear fuel rod and guide thimble sub channels for obtaining high combustion degree and high power, and minimizing a neutron absorption section in a reaction degree region. Since the guide thimble having the dual tube type structure is adopted, a flow split in the fuel rod and guide thimble sub channels can be reduced, and the degradation in performance of nuclear fuel due to increase of a neutron absorption section can be prevented. In order for compatibility with an existing control rod, a typical guide tube is used as an inner guide thimble, and an outer guide thimble is provided outside the inner guide thimble. Thus, the guide thimble has the dual tube type structure as a whole, and is coupled to the upper and lower end fittings so that it can prevent a flow unbalance due to the flow split in the fuel rod and guide thimble sub channels.

    摘要翻译： 本文公开了一种核燃料组件的导向套管，其能够改善核燃料的冷却性能和稳定性，防止双冷核燃料棒和引导套管子通道中的分流以获得高燃烧度， 高功率，并使反应程度区域中的中子吸收部分最小化。 由于采用具有双管式结构的导向套管，因此可以减少燃料棒和导向套管副通道中的流动分流，并且可以防止由于中子吸收部分的增加而引起的核燃料性能的劣化。 为了与现有的控制杆的兼容性，使用典型的导管作为内导向套管，并且外导向套管设置在内引导套管的外部。 因此，导向套管作为整体具有双管式结构，并且联接到上端和下端配件，使得其可以防止由于燃料棒和引导套管子通道中的流动分流而导致的流量不平衡。