公开(公告)号：US20110098995A1

公开(公告)日：2011-04-28

申请号：US12997389

申请日：2009-03-03

申请人： Kee-Nam Song ,  Yong-Wan Kim ,  Jong-Wha Chang ,  Won-Jae Lee

发明人： Kee-Nam Song ,  Yong-Wan Kim ,  Jong-Wha Chang ,  Won-Jae Lee

IPC分类号： G06F17/50 ,  G06F17/10

CPC分类号： F16L9/18 ,  F16L53/70 ,  F16L59/143

摘要： Provided is a method of designing a coaxial dual-tube type hot gas duct for a very-high-temperature reactor. When determining the outer diameter of an inner tube and the inner diameter of a pressure tube, both of which defines an annular part of the hot gas duct having a dual-tube shape, one selected from hydraulic heads, flow rates, and hydraulic heads of very-high-temperature helium gas flowing to a very-high-temperature region and low-temperature helium gas flowing to a low-temperature region is taken into consideration as well as is a relation of about heat balance model, so that it is possible to minimize flow induced vibrations caused by the flow of a fluid.

摘要翻译： 提供了一种设计用于极高温反应器的同轴双管式热气管道的方法。 当确定内管的外径和压力管的内径时，两者都限定了具有双管形状的热气管道的环形部分，其中一个选自液压头，流量和液压头 考虑了流向高温区域的高温氦气和流向低温区域的低温氦气，并且是关于热平衡模型的关系，因此可能 以最小化由流体流动引起的流动引起的振动。

公开(公告)号：US20070242793A1

公开(公告)日：2007-10-18

申请号：US11707450

申请日：2007-02-16

申请人： Kee-Nam Song ,  Kyung-Ho Yoon ,  Kun-Woo Song ,  Kang-Hee Lee ,  Kyung-Jin Park

发明人： Kee-Nam Song ,  Kyung-Ho Yoon ,  Kun-Woo Song ,  Kang-Hee Lee ,  Kyung-Jin Park

IPC分类号： G21C3/34

CPC分类号： G21C3/356 ,  G21Y2002/201 ,  G21Y2002/206 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/40

摘要： A grid strap includes a spacer grid spring that increases the conformal contact area with a fuel rod of a nuclear fuel rod assembly. The shape of the spacer grid spring of the grid strap which is in contact with the fuel rod is optimized, thereby the elasticity of the spacer grid spring contacting the fuel rod is increased, the conformal contact area with a contact portion of the spacer grid spring contacting the fuel rod when the fuel rod is inserted into each cell of a spacer grid is expanded to obtain uniform stress distribution, and excessive plastic deformation of the spacer grid spring can be reduced. Further, magnitude and distribution of contact pressure between the fuel rod and the spacer grid spring are improved, thereby reducing the possibility of fretting wear caused by contact between the fuel rod and the spacer grid spring. The elastic behavior region of the spacer grid spring is expanded, so that the fuel rod can be reliably supported until the lifetime of the fuel rod expires despite changes in the supporting conditions of the fuel rod.

摘要翻译： 格栅带包括间隔栅格弹簧，其增加与核燃料棒组件的燃料棒的共形接触面积。 与燃料棒接触的网格带的间隔栅格弹簧的形状被优化，从而与接触燃料棒的间隔栅格弹簧的弹性增加，与间隔栅格弹簧的接触部分的共形接触面积 当将燃料棒插入到间隔栅格的每个电池中时，使燃料棒接触而膨胀以获得均匀的应力分布，并且可以减小间隔栅格弹簧的过大的塑性变形。 此外，燃料棒和间隔栅格弹簧之间的接触压力的大小和分布得到改善，从而降低了由于燃料棒和间隔栅格弹簧之间的接触引起的微动磨损的可能性。 间隔栅格弹簧的弹性行为区域被扩大，使得燃料棒可以被可靠地支撑，直到燃料棒的寿命尽管燃料棒的支撑条件发生变化而过期。

公开(公告)号：US06744843B2

公开(公告)日：2004-06-01

申请号：US10452030

申请日：2003-05-30

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

IPC分类号： G21C334

CPC分类号： G21C3/3566 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/40

摘要： A side-slotted nozzle type double sheet spacer grid for nuclear fuel assemblies is disclosed. The spacer grid includes intersecting inner strips and four perimeter strips. Each inner strip has unit strip parts, each fabricated by integrating two unit sheet parts together into a single structure, such that the two unit sheet parts face each other and a nozzle type coolant channel is defined between the two unit sheet parts. Each perimeter strip is fabricated by integrating an inner thin sheet having the unit sheet parts with a flat outer thin sheet having a width corresponding to the width of the inner thin sheet into a single structure. The coolant channel has one or more outlets formed by cutting an upper portion of one of the two unit sheet parts of each unit strip part. Each unit sheet part has a slot longitudinally formed on each side surface of a spring that is projected from the unit sheet part to support a fuel rod within a four-walled cell. The spacer grid thus effectively deflects and mixes coolants together to improve the heat transfer effect between fuel rods and coolants, and enhances its strength to effectively resist laterally directed forces acting thereon, and remarkably improves spring performance of its fuel rod support parts, thus accomplishing desired soundness of the fuel assemblies.

摘要翻译： 公开了一种用于核燃料组件的侧槽式喷嘴型双层间隔栅格。 间隔网格包括相交的内条和四条周边条。 每个内条具有单元条部分，每个单元条部分通过将两个单元片部分集成在一起成为单个结构而制成，使得两个单元片部分彼此面对，并且在两个单位片部分之间限定喷嘴型冷却剂通道。 每个周边条通过将具有单位片部分的内部薄片与具有对应于内部薄片的宽度的宽度的平坦外部薄片整合成单一结构来制造。 冷却剂通道具有通过切割每个单位条部分的两个单位片部分之一的上部而形成的一个或多个出口。 每个单位片部分具有纵向形成在弹簧的每个侧表面上的槽，该弹簧从单元片部分突出以将燃料棒支撑在四壁电池内。 因此间隔网格因此有效地将冷却剂偏转并混合在一起以改善燃料棒和冷却剂之间的传热效果，并且增强其强度以有效地抵抗作用在其上的横向定向力，并且显着地改善其燃料棒支撑部件的弹簧性能，从而实现期望的 燃料组件的健全性。

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：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：US6167105A

公开(公告)日：2000-12-26

申请号：US208290

申请日：1998-12-08

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

IPC分类号： G21C3/352 ,  G21C3/356

CPC分类号： G21C3/352 ,  G21C3/3566 ,  G21Y2002/201 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/40

摘要： A spacer grid with H-springs for use in a nuclear reactor fuel assembly is disclosed. In the spacer grid, two sets of intersectional grid strips are arranged in sets at an angle to each other prior to being encircled by a plurality of perimeter strips, thus forming a plurality of four-walled cells individually placing and supporting an elongated fuel rod therein. A plurality of regularly spaced openings are formed on each of the grid strips and perimeter strips at portions corresponding to the cells. An H-shaped spring is set in each of the openings and has a specifically curved rib capable of being brought into conformal surface contact with a fuel rod placed in each of the cells. The H-shaped spring thus elastically supports the fuel rod. Two positioning dimples are provided on each of the strips at positions above and below each of the openings. The two positioning dimples are so specifically curved as to come into conformal surface contact with a fuel rod, thus elastically supporting the fuel rod in cooperation with the H-shaped springs.

摘要翻译： 公开了一种用于核反应堆燃料组件的具有H-弹簧的间隔栅格。 在间隔网格中，两组交叉格栅条在被多个周边条带包围之前彼此成角度地排成一组，从而形成多个四壁细胞，其中单独地将细长的燃料棒放置并支撑在其中 。 在与电池相对应的部分处，在每个栅格条和周边条上形成多个规则间隔的开口。 H形弹簧设置在每个开口中，并且具有能够与放置在每个电池中的燃料棒保持一致的表面接触的特定曲线的肋。 因此，H形弹簧弹性地支撑燃料棒。 在每个开口上方和下方的位置的每个条上设置两个定位凹坑。 两个定位凹坑被特别地弯曲成与燃料棒保持一致的表面接触，从而与H形弹簧协同地弹性地支撑燃料棒。

公开(公告)号：US20070267391A1

公开(公告)日：2007-11-22

申请号：US11695071

申请日：2007-04-02

申请人： Kee-Nam Song ,  Soo-Sung Kim ,  Kun-Woo Song

发明人： Kee-Nam Song ,  Soo-Sung Kim ,  Kun-Woo Song

IPC分类号： B23K26/24

CPC分类号： B23K26/0884 ,  B23K26/0619 ,  B23K26/106 ,  B23K26/26 ,  B23K37/0408 ,  B23K37/0461 ,  B23K2101/045 ,  G21C3/3424 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2004/40 ,  G21Y2004/501 ,  Y02E30/40

摘要： An apparatus and method for welding strap connections between inner grid straps of a spacer grid using a laser tool, and a spacer grid manufactured by the same, in which the strap connections between the inner grid straps of the spacer grid are seam-welded continuously or intermittently using the laser tool, so that the structural strength of the spacer grid is increased, a spattering phenomenon, in which a welded material is spattered during welding, is reduced, and thermal deformation is reduced. Further, fine welding is possible, and thus the welded bead of each strap connection between the inner grid straps can have a small size, and the number of welding defects can be reduced. In addition, the flow resistance of a coolant is reduced, and thereby the pressure drop of the coolant can be reduced As a result, the load on a flow pump for the coolant can be reduced, and economic efficiency and safety can be improved.

摘要翻译： 一种用于使用激光工具在间隔栅格的内格栅带之间焊接带连接的装置和方法，以及由其制造的间隔栅格，其中间隔栅格的内格栅带之间的带连接被连续地焊缝焊接或 间歇地使用激光工具，使得间隔栅格的结构强度增加，焊接时焊接材料溅射的飞溅现象减少，并且热变形减小。 此外，可以进行细焊接，因此内格栅带之间的每个带连接的焊接珠可以具有小尺寸，并且可以减少焊接缺陷的数量。 此外，冷却剂的流动阻力降低，从而可以降低冷却剂的压降。结果，可以降低用于冷却剂的流量泵的负荷，并且可以提高经济效率和安全性。

公开(公告)号：US06707872B2

公开(公告)日：2004-03-16

申请号：US10010526

申请日：2001-12-07

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

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

IPC分类号： G21C334

CPC分类号： G21C3/3563 ,  G21Y2002/303 ,  G21Y2004/301 ,  Y02E30/40

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 grid springs designed to have an optimal shape of their vertical support parts, thus reducing fretting wear of the fuel rods caused by contact of the fuel rods with the grid springs. The grid spring has a vertical support part and a fuel rod support part. The vertical support part includes upper and lower base parts extending downward and upward from the central portions of the top and bottom edges of an opening formed at the central portion of a unit strip, and two bridge parts branched from the upper base part and extending symmetrically downward until they are united at the lower base part. The fuel rod support part includes a conformal support part brought into surface contact with the external surface of a fuel rod. Two transverse connection parts extend outward from the opposite outside edges of the conformal support part while being specifically bent, and are integrated with the central portions of the inside edges of the two bridge parts into a single structure, thus connecting the fuel rod support part to the vertical support part.

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。 本发明的间隔栅格具有多个格栅弹簧，其被设计成具有其垂直支撑部分的最佳形状，从而减少由燃料棒与格栅弹簧的接触引起的燃料棒的微动磨损。 栅格弹簧具有垂直支撑部分和燃料棒支撑部分。 垂直支撑部分包括从形成在单元条的中心部分的开口的顶部和底部边缘的中心部分向下和向上延伸的上部和下部基部，以及从上部基部分支并且对称延伸的两个桥接部分 向下，直到它们结合在下基部。 燃料棒支撑部分包括与燃料棒的外表面接触的共形支撑部分。 两个横向连接部分从保形支撑部分的相对的外边缘向外延伸，同时被特别弯曲，并且与两个桥接部分的内边缘的中心部分成一体，从而将燃料棒支撑部分连接到 垂直支撑部分。

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：US6130927A

公开(公告)日：2000-10-10

申请号：US207184

申请日：1998-12-08

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

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

IPC分类号： G21C3/34 ,  G21C3/322 ,  G21C3/352

CPC分类号： G21C3/322 ,  G21C3/352 ,  G21Y2002/101 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/38

摘要： A grid with coolant deflecting channels for used in nuclear fuel assemblies is disclosed. In the grid, two sets of intersecting grid strips are arranged in sets at right angles to each other prior to being encircled by four perimeter strips, thus forming a plurality of four-walled cells individually placing and supporting an elongated fuel rod therein. Each of the grid strips is made up of two narrow sheets which are deformed at a plurality of regularly spaced portions to provide nozzle-type coolant deflecting channels. The channels individually have an upright Y-shaped or reversed Y-shaped configuration capable of so deflecting coolant as to mix low temperature coolant with high temperature coolant. The channels thus form a uniform temperature distribution within a fuel assembly. The channels are so inclined with respect to the axes of the fuel rods as to form wide and linear positioning springs at middle portions thereof. The middle portions of the channels thus individually have a dual function of a deflecting channel for coolant and a positioning spring for the fuel rods.

摘要翻译： 公开了一种具有用于核燃料组件的冷却剂偏转通道的电网。 在网格中，两组相交的格栅条在被四个周边条带包围之前彼此成直角地排成一组，从而形成多个四壁细胞，其中单独地将细长的燃料棒放置在其中。 每个格栅条由两个窄片组成，它们以多个规则间隔的部分变形，以提供喷嘴型冷却剂偏转通道。 通道各自具有直立的Y形或反向的Y形构造，其能够使冷却剂偏转以将低温冷却剂与高温冷却剂混合。 因此，通道在燃料组件内形成均匀的温度分布。 通道相对于燃料棒的轴线倾斜，以在其中间部分形成宽且线性的定位弹簧。 因此，通道的中部分别具有用于冷却剂的偏转通道和用于燃料棒的定位弹簧的双重功能。