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21. 发明申请

US20110182394A1 TOP NOZZLE FOR NUCLEAR FUEL ASSEMBLY HAVING SPRING INSERT HOLE IMPROVED IN FASTENING STABILITY AND METHOD OF MANUFACTURING THE SAME 审中-公开
标题翻译：具有改善稳定性的弹簧插入孔的核燃料组件的顶部喷嘴及其制造方法
公开(公告)号：US20110182394A1
公开(公告)日：2011-07-28
申请号：US12748367
申请日：2010-03-26
申请人： JOON KYOO PARK , Jin Seok Lee , Kyeong Lak Jeon , Jung Min Suh , Gi-Jun Gwon , Nam Gyu Park , Kyong Bo Eom , Jin Sun Kim , Dong Geun Ha , Kyoung Joo Kim
发明人： JOON KYOO PARK , Jin Seok Lee , Kyeong Lak Jeon , Jung Min Suh , Gi-Jun Gwon , Nam Gyu Park , Kyong Bo Eom , Jin Sun Kim , Dong Geun Ha , Kyoung Joo Kim
IPC分类号： G21C3/02 , B21K21/08
CPC分类号： G21C3/331 , G21C3/3315 , G21C21/00 , Y02E30/40 , Y10T29/494 , Y10T29/49432
摘要： A top nozzle for a nuclear fuel assembly and a method of manufacturing the top nozzle are provided. The top nozzle can include a coupling plate, a perimeter wall and a hold-down spring unit. The coupling plate can be coupled to a guide thimble of the nuclear fuel assembly. The perimeter wall can protrude upwards from the perimeter of the coupling plate. A spring clamp can be provided on the upper surface of the perimeter wall. The hold-down spring unit can be mounted to the upper surface of the perimeter wall in such a way to couple a corresponding end of the hold-down spring unit to the spring clamp. A fastening pin hole can be vertically formed through an upper surface of the spring clamp. A spring insert hole into which the hold-down spring unit can be inserted and formed by electro-discharge machining in an insert direction of the hold-down spring.
摘要翻译：提供了用于核燃料组件的顶部喷嘴和制造顶部喷嘴的方法。顶部喷嘴可以包括联接板，周边壁和压紧弹簧单元。联接板可以联接到核燃料组件的导向套管。周边壁可以从联接板的周边向上突出。可以在周壁的上表面上设置弹簧夹。压紧弹簧单元可以以这样的方式安装到周壁的上表面，以将压紧弹簧单元的相应端部联接到弹簧夹。紧固销孔可以通过弹簧夹的上表面垂直地形成。弹簧插入孔，压紧弹簧单元可以通过放电加工在压紧弹簧的插入方向上插入和形成。

22. 发明申请

US20080310577A1 FUEL CHANNEL FASTENER 有权
标题翻译：燃油通道紧固件
公开(公告)号：US20080310577A1
公开(公告)日：2008-12-18
申请号：US10853794
申请日：2004-05-25
申请人： Kendall J. Wahlquist
发明人： Kendall J. Wahlquist
IPC分类号： G21C3/00
CPC分类号： G21C3/331 , G21Y2002/303 , G21Y2002/304 , G21Y2004/30 , G21Y2004/301 , Y02E30/40
摘要： A fuel channel fastener having a body with a hole, a bolt inserted into the hole, at least two anti-rotation supports attached to the body, a spring configured to attach to the body and to extend away from the body down the sides of a fuel assembly fuel channel, and at least two spring anti-rotation pads connected to the body.
摘要翻译：一种燃料通道紧固件，具有一个具有一个孔的主体，一个插入到该孔中的螺栓，至少两个安装在主体上的防旋转支撑件，一个弹簧构造成附着到主体上，燃料组件燃料通道，以及连接到主体的至少两个弹簧防旋转垫。

23. 发明授权

US4603027A Removable top nozzle and tool for a nuclear reactor fuel assembly 失效
公开(公告)号：US4603027A
公开(公告)日：1986-07-29
申请号：US564058
申请日：1983-12-21
申请人： John F. Wilson , Samuel Cerni , Robert K. Gjertsen
发明人： John F. Wilson , Samuel Cerni , Robert K. Gjertsen
IPC分类号： G21C3/33 , G21C3/334 , G21C3/335 , G21C19/33 , G21C3/32
CPC分类号： G21C3/3315 , G21C3/331 , G21C3/334 , G21C3/33 , G21C3/335 , G21Y2002/302 , G21Y2002/401 , G21Y2004/30 , G21Y2004/40 , G21Y2004/501 , Y02E30/40 , Y10T403/3986
摘要： A top nozzle subassembly having a hold-down device incorporated therewithin is provided for a nuclear reactor fuel assembly. The subassembly is slidably mounted on the upper ends of the control rod guide thimbles and is removably attached by internally threaded collars which threadably mate with external threads provided on the upper ends of the guide thimbles. Unthreading of the collars allows the subassembly to be removed from the fuel assembly to gain top access to the fuel rods within the fuel assembly. The invention also includes a special tool for threading and unthreading of the collars.

24. 发明授权

US4563328A Nuclear reactor fuel assembly 失效
标题翻译：核反应堆燃料组件
公开(公告)号：US4563328A
公开(公告)日：1986-01-07
申请号：US545064
申请日：1983-10-25
申请人： Alexander Steinke
发明人： Alexander Steinke
IPC分类号： G21C3/33 , G21C3/334 , G21C19/19 , G21C3/30
CPC分类号： G21C3/331 , G21C3/334 , G21C3/33 , G21Y2002/302 , G21Y2002/40 , G21Y2004/301 , G21Y2004/50 , Y02E30/40
摘要： A nuclear reactor fuel assembly with two support plates and a holding rod connecting the two support plates rigidly with mutual spacing, the holding rod having a longitudinal axis passing through both support plates, and being held at one end in a lead-through in one of the two support plates, includes, in the lead-through, an elongated holding body for the holding rod rotatable about the longitudinal axis thereof, and displaceable in direction of the longitudinal axis thereof coaxially with the lead-through; the holding body being rigidly connectible by a rotation relative to the holding rod about the longitudinal axis thereof to an end of the holding rod and tightenable against a holding shoulder in the one support plate and detachable from the holding rod; and a spring element braced against the support plate and pressing the holding body elastically against the holding shoulder.
摘要翻译：具有两个支撑板的核反应堆燃料组件和连接两个支撑板的相互间隔刚性的保持杆，所述保持杆具有穿过两个支撑板的纵向轴线，并且一端保持在一个引导件所述两个支撑板在所述引导件中包括用于所述保持杆的细长保持体，所述保持杆可围绕其纵向轴线旋转，并且可沿其纵向方向与所述引导件同轴地移位; 所述保持体通过相对于所述保持杆的纵向轴线相对于所述保持杆的端部的旋转而刚性地可连接，并且能够抵靠所述一个支撑板中的保持肩部并且可从所述保持杆拆卸; 以及弹簧元件，其支撑在支撑板上并且将保持体弹性地按压在保持肩上。

25. 发明授权

US3992259A Fuel assembly for a nuclear reactor 失效
标题翻译：核反应堆燃料组件
公开(公告)号：US3992259A
公开(公告)日：1976-11-16
申请号：US373207
申请日：1973-06-25
申请人： Andrew James Anthony , John Jefferson Hutchinson
发明人： Andrew James Anthony , John Jefferson Hutchinson
IPC分类号： G21C3/33 , G21C3/334 , G21C19/33 , G21C3/32
CPC分类号： G21C3/3305 , G21C3/331 , G21C3/3315 , G21C3/334 , Y02E30/40
摘要： A nuclear reactor fuel assembly having an easily dissassembled threaded connection between the end fitting and the control rod guide tubes. More specifically, the threaded connection is formed between the upper and/or lower alignment posts and the guide tubes and clamps the fuel assembly end plate therebetween. The sizing and arrangement of the connections is such that the assembled joint may be subjected to thermal cycling without incurring excessive stresses or deformations.
摘要翻译：一种核反应堆燃料组件，其在端部配件和控制棒导向管之间具有易于拆卸的螺纹连接。更具体地，螺纹连接形成在上和/或下对准柱和引导管之间，并且将燃料组件端板夹在其间。连接件的尺寸和布置使得组装的接头可以经受热循环而不产生过大的应力或变形。

26. 发明公开

US20230230713A1 THREE DIMENSIONAL PRINTED PRECISION MAGNETS FOR FUEL ASSEMBLY 审中-公开
公开(公告)号：US20230230713A1
公开(公告)日：2023-07-20
申请号：US17815764
申请日：2022-07-28
申请人： Westinghouse Electric Company LLC
发明人： Nathan J. PAYNE , Jeffrey M. MCCARTY
IPC分类号： G21C3/334 , G21C3/33 , G21C3/34 , G21C3/356
CPC分类号： G21C3/334 , G21C3/3305 , G21C3/3315 , G21C3/331 , G21C3/33 , G21C3/34 , G21C3/356
摘要： An improved retention and alignment system for nuclear fuel rods includes an upper nozzle plate and a lower nozzle plate, nuclear fuel rods, each having an upper end and a lower end and extending axially between the upper and lower nozzle plates, a first precision magnet incorporated onto the lower end of the fuel rod, and a plurality of second precision magnets incorporated onto the lower nozzle plate in positions confronting the first precision magnets on the fuel rods. Each first precision magnet has at least one of a magnetic north or south polarity and the second precision magnet has at least one of a magnetic south or north polarity opposite the polarity of the confronting first precision magnet to effect magnetic attraction between the confronting first and second precision magnets. Grids between the upper and lower nozzle plates form cells through which the fuel rods pass. Precision magnets of the same polarity may be positioned laterally along the fuel rods and grid walls in positions confronting each other to repel the fuel rods from the grid walls to maintain fuel rod alignment and prevent contact between the fuel rods and the grids.

27. 发明申请

US20180254112A1 THREE DIMENSIONAL PRINTED PRECISION MAGNETS FOR FUEL ASSEMBLY 审中-公开
公开(公告)号：US20180254112A1
公开(公告)日：2018-09-06
申请号：US15896473
申请日：2018-02-14
申请人： WESTINGHOUSE ELECTRIC COMPANY LLC
发明人： NATHAN J. PAYNE , JEFFREY M. MCCARTY
IPC分类号： G21C3/334 , G21C3/33 , G21C3/322
CPC分类号： G21C3/334 , G21C3/322 , G21C3/33 , G21C3/3305 , G21C3/331 , G21C3/3315 , G21C3/34 , Y02E30/40
摘要： An improved retention and alignment system for nuclear fuel rods includes an upper nozzle plate and a lower nozzle plate, nuclear fuel rods, each having an upper end and a lower end and extending axially between the upper and lower nozzle plates, a first precision magnet incorporated onto the lower end of the fuel rod, and a plurality of second precision magnets incorporated onto the lower nozzle plate in positions confronting the first precision magnets on the fuel rods. Each first precision magnet has at least one of a magnetic north or south polarity and the second precision magnet has at least one of a magnetic south or north polarity opposite the polarity of the confronting first precision magnet to effect magnetic attraction between the confronting first and second precision magnets. Grids between the upper and lower nozzle plates form cells through which the fuel rods pass. Precision magnets of the same polarity may be positioned laterally along the fuel rods and grid walls in positions confronting each other to repel the fuel rods from the grid walls to maintain fuel rod alignment and prevent contact between the fuel rods and the grids.

28. 发明申请

US20170236603A1 HOLDING FIXTURE TO ASSIST IN ASSEMBLY OF SUPPORT GRID FOR NUCLEAR FUEL RODS AND METHOD FOR ASSEMBLING SUPPORT GRID FOR NUCLEAR FUEL RODS 审中-公开
公开(公告)号：US20170236603A1
公开(公告)日：2017-08-17
申请号：US15045892
申请日：2016-02-17
申请人： WESTINGHOUSE ELECTRIC COMPANY LLC
发明人： LYMAN J. PETROSKY
IPC分类号： G21C3/34 , G21C3/352 , G21C3/332
CPC分类号： G21C3/332 , G21C3/331 , G21C3/352 , G21C3/356 , Y02E30/40
摘要： A holding fixture for assisting in assembly of a support grid for nuclear fuel rods and including a plurality of straps each having a plurality of slots extending approximately half a height of the straps and tabs formed beside or between the slots. The holding fixture includes an actuation plate, a support plate having a plurality of receiving members structured to receive therein straps of the support grid and having a plurality of cells, and a plurality of cam assemblies structured to move to deflect every other tab of the straps received in the plurality of receiving members. The cam assemblies are disposed in every other cell of the support plate.

29. 发明授权

US09715946B2 BWR nuclear fuel assembly with snap-in sleeve spring 有权
公开(公告)号：US09715946B2
公开(公告)日：2017-07-25
申请号：US13808130
申请日：2011-07-06
申请人： Klaus Kurzer , Erhard Friedrich , Dirk Blavius , Bernd Block
发明人： Klaus Kurzer , Erhard Friedrich , Dirk Blavius , Bernd Block
IPC分类号： G21C3/32 , G21C3/33 , G21C5/06
CPC分类号： G21C3/3305 , G21C3/33 , G21C3/331 , G21C5/06 , Y02E30/40
摘要： A nuclear fuel assembly is provided for a boiling water reactor. The nuclear fuel assembly includes a base, a head, and a bundle of full length fuel rods and partial length fuel rods, said bundle extending upwardly and longitudinally from the base to the head. The nuclear fuel assembly includes at least one clamp for longitudinally retaining a lower plug of a partial length fuel rod with respect to the base. The clamp is an additional part fitted to the base, the clamp is at least partially received in a housing provided in the base, and the clamp is assembled to the base by mechanical engagement of complementary assemblies.

30. 发明授权

US08483348B2 Method of providing a hold-down force upon a nuclear fuel assembly 有权
标题翻译：在核燃料组件上提供压紧力的方法
公开(公告)号：US08483348B2
公开(公告)日：2013-07-09
申请号：US13527788
申请日：2012-06-20
申请人： Joon Kyoo Park , Jin Seok Lee , Kyeong Lak Jeon , Jung Min Suh , Gi-Jun Gwon , Nam Gyu Park , Kyong Bo Eom , Jin Sun Kim , Dong Geun Ha , Kyoung Joo Kim
发明人： Joon Kyoo Park , Jin Seok Lee , Kyeong Lak Jeon , Jung Min Suh , Gi-Jun Gwon , Nam Gyu Park , Kyong Bo Eom , Jin Sun Kim , Dong Geun Ha , Kyoung Joo Kim
IPC分类号： G21C1/22 , G21C19/28 , G21C9/00 , G21C23/00 , G21C1/04
CPC分类号： G21C3/331 , G21C3/3315 , Y02E30/40
摘要： A hold-down spring unit for a top nozzle of a nuclear fuel assembly. The hold-down spring unit is coupled to the upper end of the top nozzle of the nuclear fuel assembly. The hold-down spring unit includes a first spring which provides a hold-down force upon the nuclear fuel assembly under start-up conditions or hot full power conditions of a nuclear reactor, and a second spring which provides an additional hold-down force upon the nuclear fuel assembly under start-up conditions of the nuclear reactor. The hold-down margin under start-up conditions or hot full power conditions is reduced, thus enhancing the mechanical and structural stability of the nuclear fuel assembly.
摘要翻译：用于核燃料组件的顶部喷嘴的压紧弹簧单元。压紧弹簧单元联接到核燃料组件的顶部喷嘴的上端。压紧弹簧单元包括第一弹簧，其在核反应堆的启动条件或热全功率条件下向核燃料组件提供压紧力，以及向第二弹簧提供额外的压紧力核燃料组件在核反应堆的启动条件下。在启动条件或热全功率条件下的压紧余量减少，从而提高核燃料组件的机械和结构稳定性。

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