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11. 发明授权

US3787285A Fuel assembly for a nuclear reactor and a nuclear reactor core comprising such fuel assemblies 失效
标题翻译：核反应堆燃料组件和包含此类燃料组件的核反应堆核心
公开(公告)号：US3787285A
公开(公告)日：1974-01-22
申请号：US3787285D
申请日：1971-02-08
申请人： ATOMENERGIKOMMISSIONEN
发明人： MARSTRAND J
IPC分类号： G21C3/322 , G21C3/34 , G21C3/344 , G21C3/32
CPC分类号： G21C3/322 , G21C3/34 , G21C3/344 , Y02E30/38
摘要： A fuel assembly in which the fuel rods are arranged in a hexagonal or square, regular pattern, but in which single rods are omitted systematically and deflectors substituted therefor, each deflector normally being situated in a duct, the partition of which consists of six or eight fuel rods, respectively. The deflectors are rigidly connected to grids between the fuel rods so that the rods may expand freely in the grids.
摘要翻译：一种燃料组件，其中燃料棒布置成六边形或正方形的规则图案，但是其中系统地省略了单个杆，并且由此替代了导向器，每个偏转器通常位于管道中，其分隔件由六个或八个燃料棒。导流板刚性地连接到燃料棒之间的栅格，使得杆可以在栅格中自由地膨胀。

12. 发明授权

US3762996A Nuclear reactor fuel element assembly 失效
标题翻译：核反应堆燃料元件总成
公开(公告)号：US3762996A
公开(公告)日：1973-10-02
申请号：US3762996D
申请日：1971-03-25
申请人： ATOMIC ENERGY AUTHORITY UK
发明人： MILBURN G , CHETTER J
IPC分类号： G21C3/344 , G21C3/356 , G21C3/34
CPC分类号： G21C3/344 , G21C3/3563 , Y02E30/40
摘要： A spacer grid for a nuclear reactor fuel element assembly in which a number of fuel pins are supported in a bundle with their longitudinal axes parallel and spaced transversely one from another. The grid structure is of cellular form being made up of cojoined tubular ferrules or intersecting strips defining cells each one of which is penetrated by a fuel pin. Resilient leaf members extend longitudinally in the cells of the grid structure and contact the fuel pins. The back faces of the free ends of the leaf members overlie but are spaced by a small clearance from stop members projecting inside the cells of the grid structure. The resilient leaf members are of low spring rating so as to allow freedom of lateral vibraton of the fuel pin within the cells of the grid structure whilst remaining in contact with the fuel pins. The limits of lateral vibration of the fuel pins is governed by tapping of the back faces of the resilient leaf members on the stop members.

13. 发明授权

US3278388A Braces for fuel element clusters 失效
标题翻译：燃油元件簇支撑
公开(公告)号：US3278388A
公开(公告)日：1966-10-11
申请号：US36563464
申请日：1964-05-07
申请人： COMMISSARIAT ENERGIE ATOMIQUE
发明人： PAUL THOME
IPC分类号： G21C3/32 , G21C3/33 , G21C3/344
CPC分类号： G21C3/32 , G21C3/33 , G21C3/344 , Y02E30/40

14. 发明申请

US20220392652A1 Tube Grid Cell 有权
公开(公告)号：US20220392652A1
公开(公告)日：2022-12-08
申请号：US17776107
申请日：2020-10-21
申请人： Westinghouse Electric Sweden AB
发明人： Oleksiy Riznychenko
IPC分类号： G21C3/344 , G21C3/356 , G21C3/334
摘要： A tube grid cell (2) for a fuel bundle (8) of a nuclear reactor. The tube grid cell (2) having the length (L), comprises a cell housing (10) which has, along the longitudinal axis A, a lower section (16), an upper section (18) and a middle section (20). The middle section (20) is provided with two pairs of support members (22) and a resilient member (24) configured to generate a resilient force in an inward radial direction, the resilient member is arranged at essentially equal distance from the support members (22), and positioned approximately (120) degrees apart from the support members seen along axis A. The upper section (18) and the lower section (16) have respectively a length L1 and L2 along axis A that is larger than 0.1 L and smaller than 0.3 L, and is provided with a solid housing wall, having an even thickness and no openings, indentations or protrusions.

15. 发明申请

US20200251230A1 SPACER GRID WELDING FIXTURE 审中-公开
公开(公告)号：US20200251230A1
公开(公告)日：2020-08-06
申请号：US14211605
申请日：2014-03-14
申请人： BWXT mPower, Inc.
发明人： Roger D. Ridgeway , Jeffrey W. Austin , Jeffrey T. Lee
IPC分类号： G21C3/344 , G21C3/34 , B23K37/04
摘要： A spacer grid welding fixture comprises a frame sized to receive an assembled spacer grid comprising a first set of parallel straps and a second set of parallel straps oriented orthogonally to the first set of parallel straps, the first and second sets of parallel straps interlocked together by slots cut into the straps. A first set of grid engagement bars is placed on a first side of the spacer grid with each grid engagement bar arranged parallel with the straps of the first set of parallel straps and engaging the straps of the second set of parallel straps. A second set of grid engagement bars is placed on an opposite second side of the spacer grid with each grid engagement bar arranged parallel with the straps of the second set of parallel straps and engaging the straps of the first set of parallel straps.

16. 发明授权

US10128005B2 Optimized flower tubes and optimized advanced grid configurations 有权
公开(公告)号：US10128005B2
公开(公告)日：2018-11-13
申请号：US13691891
申请日：2012-12-03
申请人： Xiaoyan (Jane) Jiang , Yiban Xu , Zeses E. Karoutas
发明人： Xiaoyan (Jane) Jiang , Yiban Xu , Zeses E. Karoutas
IPC分类号： G21C3/356 , G21C3/344 , G21C3/352
摘要： A support grid for a nuclear fuel assembly, the nuclear fuel assembly including a generally cylindrical fuel rod with a diameter, wherein the support grid includes a frame assembly having a plurality of generally circular cells and a plurality of helical frame members. The helical frame members are disposed in the cells and are structured to contact the cell as well as a fuel rod. The helical fuel rod contact portion may have a variable pitch.

17. 发明申请

US20130272477A1 Pressurized Water Reactor with Skirted Lower End Fitting and Filter Plate 审中-公开
标题翻译：加压水反应堆，带有下端配件和过滤板
公开(公告)号：US20130272477A1
公开(公告)日：2013-10-17
申请号：US13537049
申请日：2012-06-29
申请人： Julius M. Ullmann , Lewis A. Walton , Mary W. Johnson
发明人： Julius M. Ullmann , Lewis A. Walton , Mary W. Johnson
IPC分类号： G21C15/12 , G21C19/42 , G21C3/344
CPC分类号： G21C3/3206 , G21C3/322 , G21C3/3305 , G21C21/02 , Y02E30/40
摘要： In a nuclear reactor core having fuel assemblies with upper and lower end fittings, a debris filter plate is attached to a lower end fitting having a skirt. The filter prevents debris from entering the fuel assembly, while the skirt prevents the trapped debris from sliding off the lower end fitting and continuing into the core. The lower end fitting is formed from a substantially square base and has flow channels to allow coolant to flow through it to the fuel assembly. The skirt is an extension of the metal of the lower end fitting that extends around the perimeter of the lower end fitting, spanning all four corners of the lower end fitting. In addition to capturing debris, the skirt also positions the filter, which may be manufactured from the same metal as the lower end fitting.
摘要翻译：在具有具有上端和下端配件的燃料组件的核反应堆堆芯中，碎屑过滤板连接到具有裙部的下端配件。过滤器防止碎屑进入燃料组件，而裙部防止被捕获的碎屑从下端配件滑落并继续进入芯部。下端配件由大致正方形的底座形成并具有允许冷却剂流过其的燃料组件的流动通道。裙部是下端配件的金属的延伸部分，其围绕下端配件的周边延伸，跨越下端配件的所有四个角落。除了捕获碎屑之外，裙部还定位过滤器，其可以由与下端配件相同的金属制造。

18. 发明申请

US20100024194A1 METHOD FOR PRODUCTION OF SPACERS FOR A NUCLEAR REACTOR 有权
标题翻译：用于生产核反应堆的间隔物的方法
公开(公告)号：US20100024194A1
公开(公告)日：2010-02-04
申请号：US12518368
申请日：2008-01-10
申请人： Håkan Söderberg , Thonbjörn Sahlin
发明人： Håkan Söderberg , Thonbjörn Sahlin
IPC分类号： G21C3/344 , B23P11/00
CPC分类号： G21C3/344 , G21C3/3424 , G21C3/352 , G21Y2002/302 , G21Y2004/40 , Y02E30/40 , Y10T29/49826 , Y10T29/49861 , Y10T29/531
摘要： A method for production of spacers to hold at least a number of elongated fuel rods (5) in a fuel unit (20) for placement in a re-actor (1) is described. The method comprises the steps of providing at least two spacers (30), to provide a set of mandrels (40) comprising a number of mandrels (42), to arrange at least two spacers (30) with one on top of the other on the set of mandrels (40), and to heat treat the spacers (30) when they are arranged on the set of mandrels (40) so that the cells (31) in the spacers (30) adapts to the mandrels (42).
摘要翻译：描述了一种用于制造间隔件以在燃料单元（20）中容纳至少多个细长的燃料棒（5）以放置在反作用器（1）中的方法。该方法包括以下步骤：提供至少两个间隔件（30），以提供包括多个心轴（42）的一组心轴（40），以将至少两个间隔件（30）布置在另一个顶部上所述一组心轴（40），并且当所述间隔物（30）布置在所述心轴组（40）上时，对所述间隔件（30）进行热处理，使得所述间隔件（30）中的所述单元（31）适应于所述心轴（42）。

19. 发明授权

US5740218A Spacer for a transportable nuclear fuel rod bundle 失效
标题翻译：可运输的核燃料棒束的间隔物
公开(公告)号：US5740218A
公开(公告)日：1998-04-14
申请号：US621879
申请日：1996-03-26
申请人： Christian D. Frederickson , Robert B. Elkins , Edward A. Croteau , Harold B. King , David G. Smith
发明人： Christian D. Frederickson , Robert B. Elkins , Edward A. Croteau , Harold B. King , David G. Smith
IPC分类号： G21C3/344 , G21C3/34
CPC分类号： G21C3/344 , Y02E30/40
摘要： The spacer for a nuclear fuel bundle includes unit cells having upper and lower, generally octagonally shaped walls connected one to the other by spring leg portions along sides thereof 90.degree. apart. The walls also carry stops in opposition to the sides of the walls to which the spring leg portions are connected. By orienting the cells in the spacer such that the majority of the cells have their stops lying toward one side of the spacer, the fuel bundle can be disposed in a horizontal position on the one side of the spacers. In that manner, the dead load of the fuel rods and spacers is borne by the stops along the underside of each spacer without substantially loading the springs of the spacer cells.
摘要翻译：用于核燃料束的间隔件包括具有上部和下部，通常为八边形形状的壁的单元，所述壁通过沿其90度的侧面的弹簧腿部彼此相连。墙壁还携带与弹簧腿部连接的壁的侧面相对的停止点。通过使间隔物中的电池定向使得大部分电池具有位于间隔件一侧的止动件，燃料束可以设置在间隔件一侧的水平位置。以这种方式，燃料棒和间隔件的静载荷由沿着每个间隔件的下侧的止动件承载，而基本上不加载间隔电池的弹簧。

20. 发明授权

US5675621A Reduced height flat spring spacer for nuclear fuel rods 失效
标题翻译：用于核燃料棒的高度平板弹簧垫片
公开(公告)号：US5675621A
公开(公告)日：1997-10-07
申请号：US516203
申请日：1995-08-17
申请人： Edward A. Croteau , Thomas G. Evans , Robert B. Elkins
发明人： Edward A. Croteau , Thomas G. Evans , Robert B. Elkins
IPC分类号： G21C3/34 , G21C3/334 , G21C3/344
CPC分类号： G21C3/334 , G21Y2002/201 , Y02E30/40
摘要： A spacer for a nuclear fuel bundle comprises a plurality of discrete, generally cylindrical ferrules, with each ferrule having a pair of circumferentially spaced fuel rod contacting portions along one side of the ferrule and three superposed openings in the ferrule along an opposite side thereof. A leaf spring having opposite end projecting portions and a central projecting portion is disposed between adjacent ferrules with the end projecting portions and the central portion disposed within the openings of the ferrule. The central portion includes a boss projecting inwardly for engagement against the fuel rod in one ferrule and the end projections contain bosses projecting inwardly and spaced from the fuel rod of the one ferrule. The end projections bear against an adjacent ferrule. The spring is captured between the two ferrules and contacts the ferrules at a plurality of laterally and vertically spaced contact points so that the spring is stabilized against flow-induced vibration.
摘要翻译：用于核燃料束的间隔件包括多个离散的大致圆柱形的套圈，每个套圈具有沿着套圈的一侧的一对沿周向间隔的燃料棒接触部分，并且在套圈的相对侧具有三个叠置的开口。具有相对端突出部分和中心突出部分的板簧设置在相邻的套圈之间，端部突出部分和中心部分设置在套圈的开口内。中心部分包括向内突出的凸台，用于与一个套圈中的燃料棒接合，并且端部突起包含向内突出并与一个套圈的燃料棒间隔开的凸起。端部突起抵靠相邻的套圈。弹簧被捕获在两个套圈之间并且在多个横向和垂直间隔的接触点处接触套圈，使得弹簧被稳定以防止流动引起的振动。

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