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11.发明授权Assembly and method for mounting a fuel assembly having a predefined orientation within a nuclear reactor 失效用于将具有预定义取向的燃料组件安装在核反应堆内的装配和方法公开(公告)号：US07505547B2
公开(公告)日：2009-03-17
申请号：US11644497
申请日：2006-12-22
IPC分类号： G21C3/06
CPC分类号： G21C3/328 , G21C3/3305 , G21C19/205 , G21Y2002/204 , G21Y2002/208 , G21Y2004/30 , G21Y2004/40 , Y02E30/38
摘要： Assemblies and methods for mounting a fuel assembly in a nuclear reactor include a fuel assembly includes fuel rods within the fuel assembly and a lower tie plate with a fuel assembly mating fixture. A fuel support includes a fuel support mating fixture that is constructed to selectively engage the fuel assembly mating fixture during installation of the fuel assembly onto the fuel support. The fuel support mating fixture and the fuel assembly mating fixture provides for a predefined orientation of the fuel assembly to the fuel support upon mating.
摘要翻译： 用于将燃料组件安装在核反应堆中的组件和方法包括燃料组件，其包括燃料组件内的燃料棒和具有燃料组件配合夹具的下部连接板。 燃料支撑件包括燃料支撑配合固定器，其被构造成在将燃料组件安装到燃料支架上时选择性地接合燃料组件配合固定装置。 燃料支撑配合固定装置和燃料组件配合夹具在配合时提供燃料组件到燃料支架的预定方位。
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公开(公告)号：US5553108A
公开(公告)日：1996-09-03
申请号：US334388
申请日：1994-11-03
申请人： Eric B. Johansson
发明人： Eric B. Johansson
CPC分类号： G21C3/3305 , G21C3/322 , G21Y2002/302 , G21Y2004/301 , Y02E30/40
摘要： In a fuel bundle assembly (B) for a nuclear reactor wherein a plurality of fuel rods (R) and at least one water rod (W) extend between an upper tie plate and a lower tie plate, an improvement includes a fixed connection between the water rod (W) and the lower tie plate (L), the fixed connection including a threaded lower end plug of the water rod and a threaded hole in a boss formed in the lower tie plate adapted to receive the threaded lower end plug, the threaded lower end plug (50) formed with a diametrical slot (54) therein and the boss (56) formed with a pair of slots (60, 62) extending from opposite sides of the hole such that the diametrical slot (54) and the pair of slots (60, 62) are alignable when the threaded lower end plug (50) is threaded into the boss (56); and a key (64) insertable within the aligned slots to thereby fix the water rod against rotational movement.
摘要翻译： 在用于核反应堆的燃料束组件（B）中，其中多个燃料棒（R）和至少一个水杆（W）在上连接板和下连接板之间延伸，改进包括： 水杆（W）和下连接板（L），固定连接包括水杆的螺纹下端塞和在下连接板中形成的凸台中的螺纹孔，适于接纳螺纹下端塞， 在其中形成有直径槽（54）的螺纹下端塞（50），并且凸起（56）形成有从孔的相对侧延伸的一对槽（60,62），使得直径槽（54）和 当螺纹下端塞（50）拧入凸台（56）时，一对槽（60,62）可对准。 以及可在对准的狭槽内插入的钥匙（64），从而固定水杆以防旋转运动。
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公开(公告)号：US4578241A
公开(公告)日：1986-03-25
申请号：US641073
申请日：1984-08-15
申请人： Bo Borrman , Erik Hellman , Nils Lundin , Bengt Ode
发明人： Bo Borrman , Erik Hellman , Nils Lundin , Bengt Ode
CPC分类号： G21C3/3305 , Y02E30/40
摘要： A fuel assembly is disclosed which comprises a fuel channel (1) with square cross-section supported by an inlet sleeve (22) having at its lower part an inlet opening for a flow of coolant flowing through the fuel assembly. The inlet sleeve (22) is made of stainless steel and is mechanically connected to a transition sleeve (21) made of thick zirconium alloy sheet, which is welded to the more thin-walled fuel channel (1).
摘要翻译： 公开了一种燃料组件，其包括具有由入口套筒（22）支撑的正方形横截面的燃料通道（1），其在其下部具有用于流过燃料组件的冷却剂流的入口。 入口套管22由不锈钢制成，机械地连接到由较厚的锆合金板制成的过渡套管21上，焊接到较薄壁的燃料通道（1）上。
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14.发明授权Device for supporting a fuel-pin cluster within a nuclear reactor fuel assembly wrapper 失效用于在核反应堆燃料组件包装件内支撑燃料销簇的装置
公开(公告)号：US4003787A
公开(公告)日：1977-01-18
申请号：US557319
申请日：1975-03-11
CPC分类号： G21C3/3305 , Y02E30/40
摘要： A supporting member for an array of parallel rails each carrying one row of slidably mounted pins of a fuel clister is placed coaxially at the lower end of a vertical fuel assembly wrapper. The ends of the rails are engaged in vertical slots formed in the supporting member and are secured by locking-rods mounted in open grooves located transversely to the slots in the outer faces of the supporting member.
摘要翻译： 每个承载一排可滑动安装的燃料夹的销的平行轨道的支撑构件同轴地放置在垂直燃料组件包装件的下端。 轨道的端部接合在形成在支撑构件中的垂直狭槽中，并且通过安装在横向于支撑构件的外表面中的槽的开放槽中的锁定杆来固定。
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公开(公告)号：US3992259A
公开(公告)日：1976-11-16
申请号：US373207
申请日：1973-06-25
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。
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公开(公告)号：US3775249A
公开(公告)日：1973-11-27
申请号：US3775249D
申请日：1971-10-26
发明人： CLAPHAM L
CPC分类号： G21C3/3305 , G21C3/3315 , Y02E30/40
摘要： The invention relates to a nuclear reactor fuel element assembly which is in the form of a bundle of parallel fuel pins extending between top and bottom end fittings in the assembly. The top and bottom end fittings are held together by a number of lifting pins which are screwed into the bottom end fitting and have spigots extending through the top end fitting and fitted with retaining nuts. A fuel pin locking member consists of a U-shaped split pin having its legs extending through transverse drillings in the retaining units and spigots of two adjacent pins. Thus the retaining nut of each pin is locked to the spigot and the locking member prevents relative rotation between the pins and hence prevents unscrewing of the pins from the bottom end fitting.
摘要翻译： 本发明涉及一种核反应堆燃料元件组件，其为在组件中的顶端和底端配件之间延伸的平行燃料销束的形式。 顶端和底端配件通过多个提升销保持在一起，这些提升销被拧入底端配件中，并且具有穿过顶端配件延伸并具有固定螺母的插销。 燃料销锁定构件由U型分裂销构成，其具有延伸穿过保持单元中的横向钻孔和两个相邻销的凸起的支柱。 因此，每个销的保持螺母被锁定到插头上，并且锁定构件防止销之间的相对旋转，并且因此防止销从底端配件的旋转。
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公开(公告)号：US20180197640A1
公开(公告)日：2018-07-12
申请号：US15404477
申请日：2017-01-12
CPC分类号： G21C3/332 , G21C3/26 , G21C3/322 , G21C3/326 , G21C3/3267 , G21C3/3305 , G21C3/334 , G21C3/34 , G21C7/117 , G21C7/12 , G21C7/20 , G21C9/02 , Y02E30/38 , Y02E30/39
摘要： A nuclear fuel assembly comprising a plurality of control rod guide assemblies. At least one of the control rod guide assemblies includes a guide tube having an axial dimension, the guide tube being supported by the plurality of grids and extending axially between the top nozzle and the bottom nozzle, the guide tube having an upper portion having a first radius and a lower portion having a second radius less than the first radius, and an external dashpot tube disposed around a portion of the lower portion in an area beginning at the bottom grid and extending toward the top nozzle.
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18.发明授权Bottom end-piece having an anti-debris device with a baffle for a nuclear assembly and corresponding assembly 有权底端件具有防碎屑装置，其具有用于核组件和相应组件的挡板公开(公告)号：US08774345B2
公开(公告)日：2014-07-08
申请号：US12448225
申请日：2007-12-05
申请人： Michel Verdier , Eric Labarriere
发明人： Michel Verdier , Eric Labarriere
CPC分类号： G21C3/322 , G21C3/3206 , G21C3/3305 , Y02E30/38
摘要： This bottom end-piece includes nozzles for directing the flow of water of the reactor along the lower ends of the fuel rods, the nozzles being arranged at nodes of the substantially regular network of the fuel rods, and an anti-debris device which delimits water flow channels. At least some of the water flow channels are arranged at nodes of the substantially regular network. Direction nozzles are arranged at least partially in the channels in order to delimit water passages therewith, and at least one water passage includes a first section and a second section which are mutually offset radially relative to the corresponding node of the network in order to form a baffle.
摘要翻译： 该底端件包括用于沿着燃料棒的下端引导反应器的水流的喷嘴，喷嘴布置在燃料棒的基本规则的网络的节点处，以及限定水的防碎屑装置 流通道。 至少一些水流通道被布置在基本上规则的网络的节点处。 方向喷嘴至少部分地布置在通道中以便限定水通道，并且至少一个水通道包括第一部分和第二部分，第一部分和第二部分相对于网络的相应节点相对于径向相互偏移，以形成 挡板
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公开(公告)号：US08611488B2
公开(公告)日：2013-12-17
申请号：US13026940
申请日：2011-02-14
IPC分类号： G21C19/42
CPC分类号： G21C3/3206 , G21C3/30 , G21C3/3305 , Y02E30/40
摘要： A debris exclusion and retention device traps and retains foreign material within the lower tie plate of the fuel assembly utilizing the existing flow paths within the lower tie plate, and without redirecting coolant flow. Flow through the inlet nozzle of the lower tie plate into an enlarged lower tie plate housing creates strong jet impingement against the center of the lower tie plate grid or debris filter, if present, which has a tendency to push debris to the periphery of the lower tie plate. Low flow zones around the periphery of the lower tie plate allow debris to fall back toward the inlet nozzle. The retention device traps and retains debris in these low flow zones without impacting existing flow patterns in the lower tie plate. Thus, the retention device has minimal or no impact on lower tie plate pressure drop.
摘要翻译： 碎片排除和保持装置利用现有的下连接板内的流动路径捕集并且将异物留在燃料组件的下连接板内，并且不改变冷却剂流。 通过下连接板的入口喷嘴流入扩大的下连接板壳体会产生较强的喷射冲击，抵抗下连接板网格或碎屑过滤器的中心（如果存在），其倾向于将碎屑推到下部 领带。 围绕下连接板周边的低流动区允许碎屑向入口喷嘴回落。 保持装置在这些低流动区域中捕获和保留碎屑，而不会影响下连接板中的现有流动模式。 因此，保持装置对较低的连接板压降具有最小或没有影响。
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公开(公告)号：US20130272480A1
公开(公告)日：2013-10-17
申请号：US13786505
申请日：2013-03-06
IPC分类号： G21C3/326
摘要： A nuclear reactor has a core installed on a lower core plate and formed from multiple fuel assemblies, each fuel assembly including a structural cage assembly. The structural cage assembly has an upper end fitting, mid grids, and a lower end fitting (LEF). The LEF positions the fuel assembly using four locating pins located at each corner of the LEF. The pins position the fuel assembly laterally by mating with receiving holes in the lower core plate. The locating pins have a chamfered tip with a flat end. The chamfered tip allows for a greater positioning margin when installing the fuel assembly in the core by guiding the pins into holes in the lower core plate, and the flat tip provides strength and stability in case the assembly is inadvertently rested on the tip of the pin instead of the LEF pads.
摘要翻译： 核反应堆具有安装在下芯板上并由多个燃料组件形成的芯，每个燃料组件包括结构保持架组件。 结构保持架组件具有上端配件，中间格栅和下端配件（LEF）。 LEF使用位于LEF的每个角落的四个定位销定位燃料组件。 销钉通过与下芯板中的接收孔配合而横向定位燃料组件。 定位销有一个平头端的倒角尖端。 当通过将销钉引导到下芯板中的孔中而将燃料组件安装在芯中时，倒角尖端允许更大的定位裕度，并且平坦的尖端在组件无意中搁置在销的尖端上时提供强度和稳定性 而不是LEF垫。
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