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公开(公告)号：US10692613B2
公开(公告)日：2020-06-23
申请号：US15515132
申请日：2015-10-22
发明人： Seong Soo Kim , Jae Ik Kim , Sang Youn Jeon , Kyong Bo Eom , Dong Geun Ha , Jin Sun Kim , Joo Young Ryu , O Cheol Kwon , Su Pil Ryu , Hak In Lee , Joo Hong Chun , Ba Leum Kim
IPC分类号： G21C17/108 , G21C3/33 , G21C17/10 , G21C13/036
摘要： The present invention relates to a top nozzle and a nuclear reactor in which an in-core instrument, which is supposed to be inserted through a top head of a nuclear reactor, is inserted through a guide pin for an upper core plate. In a nuclear reactor including guide pins for aligning a top nozzle for a nuclear fuel assembly with an upper core plate of a nuclear reactor, a guide hole (210) is axially formed through the guide pins (200) and in-core instruments (10) are inserted through the guide holes (210).
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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
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.
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公开(公告)号：US10311982B2
公开(公告)日：2019-06-04
申请号：US15045892
申请日：2016-02-17
发明人： Lyman J. Petrosky
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.
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公开(公告)号：US20190043627A1
公开(公告)日：2019-02-07
申请号：US16075420
申请日：2017-02-10
申请人： FRAMATOME
发明人： Serge ROILLET , Julien VALERO
摘要： A repair device for underwater repair of a hole in a nuclear reactor part includes a holder (32), a cutting tool (22) held by the holder (32) and having at least one cutting tooth (70) for remachining an inner surface of the hole. The cutting tool (22) has a suction channel (44) extending into the cutting tool (22) between at least one inlet opening (46) and at least one outlet opening (48), a drive shaft (34) for rotating the cutting tool (22), the drive shaft (34) being held by the holder (32), and a suction tube (36) connected to the holder (32) and fluidly connected to the outlet opening (48) of the suction channel (44).
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15.发明授权公开(公告)号：US10128004B2
公开(公告)日：2018-11-13
申请号：US14046012
申请日：2013-10-04
发明人： Peng Xu , Edward J. Lahoda
摘要： The invention pertains to a nuclear fuel assembly grid or a portion or a part of the grid, such as a grid strap and/or an integral flow mixer that is at least partially constructed of a composition containing one or more ternary compounds of the general formula I: Mn+1AXn (I) wherein, M is a transition metal, A is an element selected from the group A elements in the Chemical Periodic Table, X is carbon or nitrogen, and n is an integer from 1 to 3. The invention further pertains to a method of making the nuclear fuel assembly grid or a portion of a part of the grid, by employing a sintering process to sinter the composition containing one or more ternary compounds in powder form such that the resulting grid or a portion of or a part of the grid includes a plurality of sintered layers.
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公开(公告)号：US10124472B2
公开(公告)日：2018-11-13
申请号：US13447655
申请日：2012-04-16
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.
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公开(公告)号：US20170352438A1
公开(公告)日：2017-12-07
申请号：US14243954
申请日：2014-04-03
CPC分类号： G21C3/3305 , G21C3/322 , Y02E30/40
摘要： A nuclear fuel assembly having a bottom nozzle with protrusions that extend from the upstream (lower or fluid entry) and downstream (upper or fluid exit) side of a horizontally supported perforated flow plate. The protrusions have a funnel-like shape that gradually decreases the lateral flow area on the upstream side of the perforated flow plate and gradually increases the lateral flow area on the downstream side of the perforated plate. The protrusions on the downstream side are preferably recessed to accommodate the ends of the fuel rods.
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18.发明授权公开(公告)号：US09620249B2
公开(公告)日：2017-04-11
申请号：US11848548
申请日：2007-08-31
申请人： Robert B. Elkins , Russell Fawcett , David Smith , Michael Kiernan , Russell Stachowski , Gerald A. Luciano , Michael S. DeFilippis , Carlton Clark , Richard Carl Longren
发明人： Robert B. Elkins , Russell Fawcett , David Smith , Michael Kiernan , Russell Stachowski , Gerald A. Luciano , Michael S. DeFilippis , Carlton Clark , Richard Carl Longren
CPC分类号： G21C3/3206 , G21C3/33 , G21C3/344 , Y02E30/40
摘要： A nuclear reactor fuel bundle assembly including: a fuel bundle including an array of fuel rods and water rods mounted in an upper tie plate and housed in walls of a channel, and a pore type debris shield mounted at least partially in the channel, above or below the upper tie plate, the shield extending to or over the walls of the channel, whereby deflecting and/or capturing falling debris from entering the fuel assembly, wherein the shield is design to be durable, yet flexible, and porous.
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19.发明申请公开(公告)号：US20160358675A1
公开(公告)日：2016-12-08
申请号：US14550900
申请日：2014-11-21
发明人： Wenchi Yu , Xiaoming Chen , Xianfeng Lv , Weicai Li , Yuemin Zhou , Yahong Hu , Shilei Li
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。
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20.发明授权Bundle retention clip, fuel assembly including the same, and method of assembling fuel assembly 有权捆扎保持夹，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
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。
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