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11. 发明授权

US4560532A Nuclear fuel assembly 失效
标题翻译：核燃料组件
公开(公告)号：US4560532A
公开(公告)日：1985-12-24
申请号：US550669
申请日：1983-11-10
申请人： Robert F. Barry , Susan C. Delzell , Wilson, John F. , Theodore W. Nylund
发明人： Robert F. Barry , Susan C. Delzell , Wilson, John F. , Theodore W. Nylund
IPC分类号： G21C3/322 , G21C3/33 , G21C3/30
CPC分类号： G21C3/3305 , G21C3/322 , G21C3/331 , G21C3/3315 , Y02E30/38
摘要： A nuclear fuel assembly includes and upper yoke, a base, an elongated, outer flow channel disposed substantially along the entire length of the fuel assembly and an elongated, internal, central water cross, formed by four, elongated metal angles, that divides the nuclear fuel assembly into four, separate, elongated fuel sections and that provides a centrally disposed path for the flow of subcooled neutron moderator along the length of the fuel assembly. A separate fuel bundle is located in each of the four fuel sections and includes an upper tie plate, a lower tie plate and a plurality of elongated fuel rods disposed therebetween. Preferably, each upper tie plate is formed from a plurality of interconnected thin metal bars and includes an elongated, axially extending pin that is received by the upper yoke of the fuel assembly for restraining lateral motion of the fuel bundle while permitting axial movement of the fuel bundle with respect to the outer flow channel. The outer flow channel is fixedly secured at its opposite longitudinal ends to the upper yoke and to the base to permit the fuel assembly to be lifted and handled in a vertical position without placing lifting loads or stresses on the fuel rods. The yoke, removably attached at the upper end of the fuel assembly to four structural ribs secured to the inner walls of the outer flow channel, includes, as integrally formed components, a lifting bail or handle, laterally extending bumpers, a mounting post for a spring assembly, four elongated apertures for receiving with a slip fit the axially extending pins mounted on the upper tie plates and slots for receiving the structural ribs secured to the outer flow channel. Locking pins securely attach the yoke to the structural ribs enabling the fuel assembly to be lifted as an entity.
摘要翻译：核燃料组件包括基本上沿着燃料组件的整个长度设置的上部轭架，底座，细长的外部流动通道和由四个细长的金属角度形成的细长的，内部的中央水的交叉，燃料组件分成四个分离的细长的燃料部分，并且沿着燃料组件的长度提供用于过冷中子减速器流动的中心设置的路径。单独的燃料束位于四个燃料部分中的每一个中，并且包括上连接板，下连接板和设置在它们之间的多个细长的燃料棒。优选地，每个上连接板由多个互连的薄金属杆形成并且包括细长的轴向延伸的销，该销由燃料组件的上轭接收，用于限制燃料束的横向运动，同时允许燃料的轴向移动束相对于外部流动通道。外部流道在其相对的纵向端部固定地固定到上部轭架和底部，以允许燃料组件在垂直位置被提升和处理，而不会在燃料棒上施加提升负载或应力。可拆卸地附接在燃料组件的上端处的轭体固定到外部流动通道的内壁的四个结构肋包括作为整体形成的部件的提升吊环或手柄，横向延伸的缓冲器，用于弹簧组件，四个细长的孔，用于接收滑动配合安装在上连接板上的轴向延伸的销和用于接收固定到外部流动通道的结构肋的槽。锁定销将轭架牢固地附接到结构肋上，使得燃料组件能够作为实体提升。

12. 再颁专利

USRE31583E Fuel assembly hold-down device 失效
标题翻译：燃油组件压紧装置
公开(公告)号：USRE31583E
公开(公告)日：1984-05-08
申请号：US220591
申请日：1980-12-29
申请人： Ralph H. Klumb , John J. Hutchinson
发明人： Ralph H. Klumb , John J. Hutchinson
IPC分类号： G21C3/32 , G21C3/33 , G21C5/06
CPC分类号： G21C3/331 , G21C3/32 , G21C5/06 , Y02E30/40
摘要： The invention provides a hold-down device which maintains a net downward force on a fuel assembly in a nuclear reactor under all thermal and hydraulic conditions in the reactor core region. The hold-down device is particularly applicable in reactors having stainless steel support barrels and Zircaloy guide tubes.The hold-down device of the preferred embodiment of the invention is comprised of coil springs coaxially disposed about alignment posts which extend upwardly from the top end plate of each fuel assembly. A hold-down plate is slideably mounted on the alignment posts and the coil springs are interposed, in compression, between the hold-down plate and the top end plate. In use, the coil springs bias the hold-down plate upwardly against a core alignment plate to provide a downward force on the fuel assembly. The hold-down plate may also serve as a lifting surface for the fuel assembly during fuel handling.

13. 发明授权

US3475273A Nuclear reactor fuel assembly 失效
标题翻译：核反应堆燃料总成
公开(公告)号：US3475273A
公开(公告)日：1969-10-28
申请号：US3475273D
申请日：1967-12-05
申请人： COMBUSTION ENG
发明人： KRAWIEC DONALD M
IPC分类号： G21C3/33
CPC分类号： G21C3/3315 , G21C3/331 , Y02E30/40

14. 发明申请

US20190189296A1 NUCLEAR REACTOR WITH A SELF-SUPPORTING CORE 审中-公开
公开(公告)号：US20190189296A1
公开(公告)日：2019-06-20
申请号：US16097472
申请日：2017-05-04
申请人： Luciano Cinotti
发明人： Luciano Cinotti
IPC分类号： G21C3/33 , G21C1/14 , G21C19/19 , G21C3/10
CPC分类号： G21C3/331 , G21C1/03 , G21C1/14 , G21C3/10 , G21C3/33 , G21C5/10 , G21C19/19 , Y02E30/40
摘要： A nuclear reactor is provided that comprises a vessel that houses a core, comprising a bundle of fuel elements, and immersed in a primary cooling fluid of the core; the fuel elements extend along respective longitudinal and parallel axes and are mechanically supported by respective heads joined to each other and joined to an anchoring structure by support devices acting between adjacent fuel elements, or acting between fuel elements situated on the periphery of the core and the anchoring structure, and which constitute an integral part of the heads of the fuel elements.

15. 发明申请

US20160358675A1 NUCLEAR CORE COMPONENT HOLD-DOWN ASSEMBLY AND NUCLEAR REACTOR FUEL ASSEMBLY 审中-公开
标题翻译：核心部件保持组件和核反应堆燃料总成
公开(公告)号：US20160358675A1
公开(公告)日：2016-12-08
申请号：US14550900
申请日：2014-11-21
申请人： China Nuclear Power Technology Research Institute Co., Ltd.
发明人： Wenchi Yu , Xiaoming Chen , Xianfeng Lv , Weicai Li , Yuemin Zhou , Yahong Hu , Shilei Li
IPC分类号： G21C3/33 , G21C3/322
CPC分类号： G21C3/331 , G21C3/322 , G21C5/06 , G21Y2002/30 , G21Y2004/30 , Y02E30/38
摘要： A nuclear core component hold-down assembly includes a hollow spring guide in which an instrumentation insertion channel is formed; a base plate which has a center hole formed through a center thereof, and several water flow holes formed around the center hole; a lower end of the spring guide connecting and mating with an upper end of the base plate, the instrumentation insertion channel communicating with the center hole, and the base plate locating above the adapter plate and pressing against it directly; a hold-down bar slidably mounted on an upper end of the spring guide and locating above the base plate; and a spring element configured between the hold-down bar and the base plate, by which the hold-down bar pushes the base plate to cause the base plate to press against the adapter plate. The structure is stable and reliable.
摘要翻译：核芯部件压紧组件包括中空弹簧引导件，其中形成有仪表插入通道; 具有形成在其中心的中心孔的基板和形成在中心孔周围的若干水流孔; 弹簧引导件的下端与基板的上端连接并配合，与中心孔连通的仪表插入通道和位于适配器板上方的基板直接按压; 可滑动地安装在弹簧引导件的上端并定位在基板上方的压紧杆; 以及弹簧元件，其构造在所述压紧杆和所述基板之间，所述压紧杆通过所述弹簧元件推动所述基板，以使所述基板压靠所述适配器板。结构稳定可靠。

16. 发明授权

US09159460B2 Bundle retention clip, fuel assembly including the same, and method of assembling fuel assembly 有权
标题翻译：捆扎保持夹，包括其的燃料组件以及组装燃料组件的方法
公开(公告)号：US09159460B2
公开(公告)日：2015-10-13
申请号：US13241809
申请日：2011-09-23
申请人： Russell P. Higgins
发明人： Russell P. Higgins
IPC分类号： G21C19/28 , G21C3/30 , G21C3/33 , G21C3/332 , G21C3/334
CPC分类号： G21C3/30 , G21C3/3305 , G21C3/331 , G21C3/332 , G21C3/334 , Y02E30/40 , Y10T24/44932 , Y10T29/49826
摘要： A fuel assembly may include a channel nosepiece; a lower tie plate positioned above the channel nosepiece; and at least one bundle retention clip connected to the channel nosepiece and the lower tie plate and configured to resist movement of the lower tie plate away from the channel nosepiece.
摘要翻译：燃料组件可以包括通道喷嘴; 位于通道喷嘴上方的下连接板; 以及至少一个束保持夹，其连接到通道鼻梁和下连接板，并且构造成抵抗下连接板远离通道鼻梁的运动。

17. 发明授权

US08670519B2 Nuclear fuel assembly hold down spring 有权
标题翻译：核燃料组件压紧弹簧
公开(公告)号：US08670519B2
公开(公告)日：2014-03-11
申请号：US12901599
申请日：2010-10-11
申请人： Joonhyung Choi , Yu Chung Lee
发明人： Joonhyung Choi , Yu Chung Lee
IPC分类号： G21C19/28
CPC分类号： G21C3/331 , G21C3/12 , G21C3/3315 , Y02E30/40
摘要： A nuclear fuel assembly having a plurality of multi-leaf hold down spring sets extending from a top nozzle. Each spring set consists of a multiple number of springs leafs in order to provide a large working range of spring deflection. Each spring leaf has a straight, flat base section followed by a straight, flat tapered beam with a secondary spring set having a curvature at its peripheral end.
摘要翻译：一种核燃料组件，其具有从顶部喷嘴延伸的多个多叶压缩弹簧组。每个弹簧组由多个弹簧叶组成，以提供弹簧偏转的大的工作范围。每个弹簧叶片具有直的平坦的基部部分，随后是直的扁平的锥形梁，其二次弹簧组件在其外周端具有曲率。

18. 发明申请

US20130272481A1 LOWER END FITTING LOCKNUT FOR NUCLEAR FUEL ASSEMBLY 审中-公开
标题翻译：用于核燃料组件的下端接头锁
公开(公告)号：US20130272481A1
公开(公告)日：2013-10-17
申请号：US13447655
申请日：2012-04-16
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： G21C3/356 , G21C3/334
CPC分类号： B25B23/0092 , F16B23/0015 , F16B39/025 , G21C3/3305 , G21C3/331 , G21C3/3315 , Y02E30/40
摘要： A fuel assembly includes a plurality of fuel rods comprising fissile material, a plurality of guide tubes interspersed amongst the fuel rods, an upper end fitting connected with upper ends of guide tubes, and a lower end fitting. End plugs are connected with the lower ends of the guide tubes. The end plugs have threaded male shafts extending from the lower ends of the guide tubes which pass through openings of the lower end fitting. Female lock nuts are threaded onto the threaded male shafts of the end plugs and lock with the lower end fitting to secure the lower end fitting to the lower ends of the guide tubes. The female lock nuts suitably have locking portions that are outwardly deformed into recesses of the lower end fitting to lock the lock nuts in place after tightening. Dashpot tubes may be disposed in the lower ends of the guide tubes and connected to the end plugs.
摘要翻译：燃料组件包括多个燃料棒，其包括裂变材料，多个引导管分散在燃料棒之间，上端配件与导管的上端连接，下端配件。端塞与导管的下端连接。端塞具有从引导管的下端延伸穿过下端配件的开口的螺纹阳轴。母锁螺母拧入端塞的螺纹公轴上，并与下端配件锁定，以将下端配件固定在导管的下端。母锁螺母适当地具有锁定部分，其向外变形成下端配件的凹部，以在紧固之后将锁定螺母锁定在适当位置。缓冲器管可以设置在引导管的下端并连接到端塞。

19. 发明授权

US08477900B2 Hold-down spring unit for top nozzle of nuclear fuel assembly having improved hold-down performance and top nozzle for nuclear fuel assembly having the same 有权
标题翻译：用于具有改进的压缩性能的核燃料组件的顶部喷嘴的压紧弹簧单元和具有其的用于核燃料组件的顶部喷嘴
公开(公告)号：US08477900B2
公开(公告)日：2013-07-02
申请号：US12748369
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： G21C3/32
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 and 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 and 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和热全功率条件下向核燃料组件提供压紧力，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。在启动条件和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。

20. 发明授权

US08229055B2 Top nozzle for nuclear fuel assembly 有权
标题翻译：用于核燃料组装的顶部喷嘴
公开(公告)号：US08229055B2
公开(公告)日：2012-07-24
申请号：US11970884
申请日：2008-01-08
申请人： Joon-kyoo Park , Joon-hyung Choi , Kyu-Tae Kim , Jung-min Suh , Shin-ho Lee , Nam-gyu Park , Kyong-bo Eom , Jin-sun Kim , Jin-seok Lee , Seong-ki Lee
发明人： Joon-kyoo Park , Joon-hyung Choi , Kyu-Tae Kim , Jung-min Suh , Shin-ho Lee , Nam-gyu Park , Kyong-bo Eom , Jin-sun Kim , Jin-seok Lee , Seong-ki Lee
IPC分类号： G21C15/00
CPC分类号： G21C3/331 , G21C3/3315 , Y02E30/40
摘要： The present invention relates to a top nozzle for a nuclear fuel assembly that has a two-stage elastic section such that a pushing force against the axial movement of the nuclear fuel assembly under normal conditions is optimized and at the same time a suppressing force against a drastic uplifting force of the nuclear fuel assembly under transient conditions is strengthened, and that lowers the elastic coefficients of the springs operating under normal conditions more than those of existing coil springs, thereby providing an optimal pushing force against the nuclear fuel assembly.
摘要翻译：本发明涉及一种用于核燃料组件的顶部喷嘴，其具有两级弹性部分，使得在正常条件下抵抗核燃料组件的轴向运动的推力被优化，并且同时具有抵抗加强了在瞬态条件下核燃料组件的极大提升力，降低了在正常条件下比现有螺旋弹簧工作的弹簧的弹性系数，从而提供了抵抗核燃料组件的最佳推力。

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