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：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：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。