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。

公开(公告)号：US06421407B1

公开(公告)日：2002-07-16

申请号：US09439714

申请日：1999-11-12

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

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

IPC分类号： G21C3352

CPC分类号： G21C3/352 ,  G21C3/322 ,  G21C3/3563 ,  G21Y2002/101 ,  G21Y2002/201 ,  G21Y2002/206 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/38

摘要： A nuclear fuel spacer grid, fabricated by intersecting a plurality of zircaloy or inconel grid strips and used for placing and supporting a plurality of elongated fuel rods within a nuclear fuel assembly, is disclosed. In the spacer grid of this invention, each of the grid strips is not cut away to form separate springs or dimples for supporting the fuel rods, but has an axial slot extending from one end of each strip to a length. The grid strips are intersected at the slots prior to being welded together into a single grid structure at a welding tap formed at an outside end or a middle portion of each of the slots. Each of the grid strips also has a dipper-shaped coolant mixing vane, or a dipper vane, at each of the upper and lower ends thereof. The spacer grid thus maximizes the thermal hydraulic coolant mixing effect within a fuel assembly and stably supports the fuel rods within the assembly while improving the mechanical/structural strength of the assembly, such as a buckling strength.

摘要翻译： 公开了一种核燃料间隔栅格，其通过与多个锆石或铬镍铁合金网格条相交并用于在核燃料组件内放置和支撑多个细长燃料棒而制造。 在本发明的间隔栅格中，每个栅格条不被切除以形成用于支撑燃料棒的单独的弹簧或凹坑，而是具有从每个条的一端延伸到一定长度的轴向槽。 在形成在每个槽的外部端部或中间部分处的焊接接头处，将栅格条在焊缝之间相互焊接在一起成为单个格栅结构。 每个格栅条在其上端和下端的每一端还具有杓形冷却剂混合叶片或杓形叶片。 间隔网格因此使燃料组件内的热液压冷却剂混合效果最大化并且在改善组件的机械/结构强度（例如屈曲强度）的同时，稳定地支撑组件内的燃料棒。

公开(公告)号：US06608881B2

公开(公告)日：2003-08-19

申请号：US10116319

申请日：2002-04-03

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.

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。

公开(公告)号：US20050105677A1

公开(公告)日：2005-05-19

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： G21C3/34

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。

公开(公告)号：US06236702B1

公开(公告)日：2001-05-22

申请号：US09121930

申请日：1998-07-24

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

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

IPC分类号： G21C334

CPC分类号： G21C3/322 ,  G21C2003/3432 ,  Y02E30/38

摘要： A fuel assembly spacer grid including swirl deflectors respectively arranged at interconnections between interconnecting longitudinally and laterally-extending straps on upper ends of the interconnecting straps adapted to support fuel elements of a nuclear fuel assembly. Each of the swirl deflectors has four vanes bent to have an air vane shape. By virtue of this configuration, an improvement in the efficiency of the spacer grid cooling the fuel elements. The spacer grid also includes springs each configured to generate not only a main spring force caused by a displacement of the spring occurring when the spring comes into contact with a fuel element placed in a reactor core, but also an additional spring force caused by hydraulic pressure applied to the spring. Each spring, which is in a fixed state at one end thereof, has a free bent portion at the other end. By virtue of such a spring configuration, it is possible to compensate for a reduction in the initial spring force of the spring resulting from a change in the property of the spring material. The spring has a curved contact portion configured in such a manner that it is in conformal surface contact with a circumferential surface of the fuel element, thereby enhancing vibration suppressing and abrasion resistance forces.

摘要翻译： 一种燃料组件间隔栅格，其包括分别布置在相互连接的相互连接的相互连接的相互连接的带状连接带的纵向和横向延伸的带上的涡流偏转器，其适于支撑核燃料组件的燃料元件。 每个涡旋导流器具有弯曲成具有气翼形状的四个叶片。 由于这种结构，间歇栅格的效率的提高使燃料元件冷却。 间隔网格还包括弹簧，每个弹簧被配置成不仅产生由弹簧与放置在反应堆芯中的燃料元件接触而发生的弹簧位移引起的主弹簧力，而且还产生由液压引起的附加弹簧力 适用于春天。 在其一端处于固定状态的每个弹簧在另一端具有自由弯曲部分。 由于这种弹簧构造，可以补偿弹簧材料的特性变化导致的弹簧的初始弹簧力的减小。 该弹簧具有弯曲的接触部，其配置成与燃料元件的周面呈保形面接触，从而增强振动抑制和耐磨损力。

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。

公开(公告)号：US08243872B2

公开(公告)日：2012-08-14

申请号：US12146493

申请日：2008-06-26

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

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

IPC分类号： G21C3/34

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

摘要： A spacer grid can be applied to close-spaced nuclear fuel rods. The spacer grid is directed to solve the problem in which, as the outer diameter of each nuclear fuel rod increases due to the use of dual-cooled nuclear fuel rods for improving cooling performance and obtaining high combustion and high output power, the gap between the neighboring nuclear fuel rods is narrowed to thus make it impossible to use an existing spacer grid. The spacer grid is a combination of unit grid straps, each of which has supports for supporting each of the nuclear fuel rods set in a narrow array and has a sheet shape, which are combined with each other. The supports are located at positions shifted from the longitudinal central line of each unit grid strap toward sub-channels.

摘要翻译： 间隔栅格可以应用于紧密间隔的核燃料棒。 针对这种间隔格栅来解决这样一个问题，即由于使用双冷核燃料棒来提高冷却性能并获得高燃烧和高输出功率，因此每个核燃料棒的外径增加 相邻的核燃料棒变窄，因此不可能使用现有的间隔栅格。 间隔栅格是单元网格带的组合，每个网格带都具有支撑，用于支撑以窄阵列设置的每个核燃料棒，并且具有彼此组合的片状。 支撑件位于从每个单元格栅带的纵向中心线向子通道移位的位置。

公开(公告)号：US08275088B2

公开(公告)日：2012-09-25

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。

公开(公告)号：US20090052607A1

公开(公告)日：2009-02-26

申请号：US12146493

申请日：2008-06-26

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

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

IPC分类号： G21C3/356 ,  G21C3/34

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

摘要： A spacer grid can be applied to close-spaced nuclear fuel rods. The spacer grid is directed to solve the problem in which, as the outer diameter of each nuclear fuel rod increases due to the use of dual-cooled nuclear fuel rods for improving cooling performance and obtaining high combustion and high output power, the gap between the neighboring nuclear fuel rods is narrowed to thus make it impossible to use an existing spacer grid. The spacer grid is a combination of unit grid straps, each of which has supports for supporting each of the nuclear fuel rods set in a narrow array and has a sheet shape, which are combined with each other. The supports are located at positions shifted from the longitudinal central line of each unit grid strap toward sub-channels.

摘要翻译： 间隔栅格可以应用于紧密间隔的核燃料棒。 针对这种间隔格栅来解决这样一个问题，即由于使用双冷核燃料棒来提高冷却性能并获得高燃烧和高输出功率，因此每个核燃料棒的外径增加 相邻的核燃料棒变窄，因此不可能使用现有的间隔栅格。 间隔栅格是单元网格带的组合，每个网格带都具有支撑，用于支撑以窄阵列设置的每个核燃料棒，并且具有彼此组合的片状。 支撑件位于从每个单元格栅带的纵向中心线向子通道移位的位置。