公开(公告)号：US06807246B1

公开(公告)日：2004-10-19

申请号：US10328974

申请日：2002-12-24

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

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

IPC分类号： G21C334

CPC分类号： G21C3/352 ,  G21C3/3563 ,  G21Y2002/201 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/40

摘要： A lips-type multi-purposed spacer grid for supporting fuel rods within a nuclear fuel assembly is disclosed. In the spacer grid, the fuel rods are in contact with dimples and water strider-type springs in an equiangular surface contact manner. The spacer grid distributes load, applied to the springs, to the entire structure of its inner strips, thus reducing peak stress at the contact surfaces between the fuel rods and the springs and diminishing vibration of the fuel rods, and thereby reducing possible fretting wear of the fuel rods due to hydraulic vibration of the fuel rods. The spacer grid also enlarges the allowable elastic range of the springs, and allows the springs to soundly support the fuel rods by using residual spring force. The spacer grid has mixing blades capable of minimizing pressure loss and flow interference, so that the fuel rod cooling efficiency of the nuclear fuel assembly is improved.

摘要翻译： 公开了一种用于在核燃料组件内支撑燃料棒的唇形多用间隔栅格。 在间隔网格中，燃料棒以等角面接触的方式接触凹坑和水刺式弹簧。 间隔栅格将施加到弹簧的负载分配到其内部条的整个结构，从而减少燃料棒和弹簧之间的接触表面处的峰值应力，并减少燃料棒的振动，从而减少可能的微动磨损 由于燃料棒的液压振动引起的燃料棒。 间隔网格也扩大了弹簧的允许弹性范围，并允许弹簧通过使用残余弹簧力来牢固地支撑燃料棒。 间隔栅格具有能够最小化压力损失和流动干扰的混合叶片，从而提高了核燃料组件的燃料棒冷却效率。

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：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：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。

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：US07968818B2

公开(公告)日：2011-06-28

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： B23K26/00

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。