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公开(公告)号：US08811566B2
公开(公告)日：2014-08-19
申请号：US12749470
申请日：2010-03-29
申请人： Nam Gyu Park , Gi-Jun Gwon , Kyeong Lak Jeon , Jung Min Suh , Jin Seok Lee , Kyong Bo Eom , Joon Kyoo Park , Jin Sun Kim , Dong Geun Ha , Kyoung Joo Kim
发明人： Nam Gyu Park , Gi-Jun Gwon , Kyeong Lak Jeon , Jung Min Suh , Jin Seok Lee , Kyong Bo Eom , Joon Kyoo Park , Jin Sun Kim , Dong Geun Ha , Kyoung Joo Kim
CPC分类号： G21C3/32 , G21C3/3305 , Y02E30/40
摘要： A guide thimble plug for a nuclear fuel assembly is provided, in which an internal threaded hole is formed through a main body so that the main body is coupled to a bottom nozzle by a screw coupling. An upper insert part is formed in the upper end of the main body. The upper insert part is inserted into a shock absorption tube. A thermal deformation prevention part is formed on the main body below the upper insert part and is recessed inward from the outer surface of the main body such that, when the main body is coupled to the guide thimble, a gap is defined between the thermal deformation prevention part and the guide thimble. The guide thimble and the shock absorption tube can be reliably fastened to the bottom nozzle, and thermal deformation of the guide thimble can be minimized.
摘要翻译： 提供了一种用于核燃料组件的导向套筒塞，其中内螺纹孔通过主体形成，使得主体通过螺纹联接件联接到底部喷嘴。 上部插入部分形成在主体的上端。 将上部插入部分插入减震管中。 一个热变形防止部分形成在主体下面的上插入部分上，并且从主体的外表面向内凹入，使得当主体联接到导向套管时，在热变形 预防部分和导向套管。 引导套管和减震管可以可靠地固定到底部喷嘴，并且导引套管的热变形可以最小化。
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公开(公告)号：US08712004B2
公开(公告)日：2014-04-29
申请号：US12997811
申请日：2009-06-10
申请人： Jean-Pierre Robin
发明人： Jean-Pierre Robin
IPC分类号： G21C3/06
CPC分类号： G21C3/3206 , G21C3/322 , G21C3/3305 , G21Y2002/201 , G21Y2002/304 , G21Y2004/30 , Y02E30/38
摘要： A nuclear fuel assembly bottom nozzle, of the type including a perforated plate to allow water to pass through it, the nozzle having lateral faces, and at least one anti-debris element positioned on a lateral face to block out debris likely to infiltrate between the bottom nozzle and another adjacent bottom nozzle, characterized in that, in the free state, the or each anti-debris element permanently projects from the lateral face on which it is positioned, the or each anti-debris element being elastically deformable so as to retract towards the lateral face in the event of a force being exerted on the anti-debris element towards the lateral face.
摘要翻译： 核燃料组件底部喷嘴，其类型包括允许水通过其的多孔板，喷嘴具有侧面，以及至少一个位于侧面上的防碎屑元件，以阻挡可能渗入 底部喷嘴和另一个相邻的底部喷嘴，其特征在于，在自由状态下，所述或每个防碎屑元件从其所在的侧面永久地突出，所述或每个防碎屑元件可弹性变形以便缩回 在朝向侧面施加在防碎片元件上的力的情况下朝向侧面。
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63.发明申请LOWER END FITTING FOR NUCLEAR FUEL ASSEMBLY MADE FROM INTERSECTING METAL STRIPS 审中-公开用于从金属连接处理的核燃料组件的下端配件公开(公告)号：US20130272479A1
公开(公告)日：2013-10-17
申请号：US13597838
申请日：2012-08-29
IPC分类号： G21C3/33
CPC分类号： G21C3/33 , G21C3/3206 , G21C3/3305 , Y02E30/40
摘要： A fuel assembly including a plurality of fuel rods arranged mutually in parallel wherein the fuel rods include a fissile material, a plurality of guide tubes arranged in parallel with and interspersed amongst the fuel rods, an upper end fitting connected with upper ends of the guide tubes, and a lower end fitting connected with lower ends of the guide tubes. At least one of the upper end fitting and the lower end fitting includes a grid formed by interlocking metal strips secured together at intersections between the metal strips.
摘要翻译： 一种燃料组件，包括相互并联布置的多个燃料棒，其中所述燃料棒包括易裂变材料，多个导管与所述燃料棒平行布置并散布在所述燃料棒中;上端配件，其与所述导管的上端连接 以及与引导管的下端连接的下端配件。 上端配件和下端配件中的至少一个包括通过互锁的金属条形成的格栅，金属条固定在金属条之间的交叉处。
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64.发明申请公开(公告)号：US20130272477A1
公开(公告)日：2013-10-17
申请号：US13537049
申请日：2012-06-29
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。
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公开(公告)号：US20130163712A1
公开(公告)日：2013-06-27
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： G21C3/33
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.
摘要翻译： 为沸水反应器提供核燃料组件。 核燃料组件包括基座，头部和一束全长燃料棒和部分长度的燃料棒，所述束从基座向头部和纵向延伸。 核燃料组件包括至少一个用于相对于基座纵向保持部分长度燃料棒的下塞的夹具。 夹具是装配到基座的附加部件，夹具至少部分地容纳在设置在基座中的壳体中，并且夹具通过互补组件的机械接合而组装到基座。
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公开(公告)号：US20120207262A1
公开(公告)日：2012-08-16
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：US08238511B2
公开(公告)日：2012-08-07
申请号：US12480827
申请日：2009-06-09
申请人： Hua Jiang , Paul Evans
发明人： Hua Jiang , Paul Evans
CPC分类号： G21C3/3305 , G21C3/322 , G21C3/352 , G21C3/3563 , Y02E30/38
摘要： A protector bottom grid for a nuclear fuel assembly that includes three laterally staggered and horizontally oriented protrusions that extend into the fuel rod cell of a support grid below a vertically oriented spring. The three staggered protrusions extend into the cell a distance that maintains a space between the protrusions and the fuel rod. The vertically oriented spring biases the fuel rod against a dimple extending from the opposite cell wall that is at an elevation just above the spring. The protrusions below the spring trap incoming debris in the area of the fuel rod end cap and protect the fuel rod cladding from fretting.
摘要翻译： 用于核燃料组件的保护器底部格栅，其包括三个横向交错且水平定向的突起，其延伸到垂直定向弹簧下方的支撑格栅的燃料棒单元中。 三个交错的突起延伸到电池中，该距离保持突起和燃料棒之间的空间。 垂直取向的弹簧将燃料棒偏压在从恰好在弹簧上方的正上方的相对的细胞壁延伸的凹坑。 弹簧下方的突起将燃料棒端盖的区域内的进入碎屑收集起来，并保护燃料棒包层免受磨损。
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公开(公告)号：US08180014B2
公开(公告)日：2012-05-15
申请号：US12003145
申请日：2007-12-20
IPC分类号： G21C3/06
CPC分类号： G21C3/3305 , G21C3/322 , G21C3/3315 , G21C3/332 , Y02E30/38
摘要： Example embodiments are directed to tiered tie plates and fuel bundles that use tiered tie plates. Example embodiment tie plates may include upper and lower tiered tie plates. Example embodiment tiered tie plates may have a plurality of bosses divided into groups, or tiers, having differing vertical (axial) displacement. Example embodiment fuel bundles may use tiered tie plates such that fuel rods in example bundles may originate and terminate at different vertical displacements, based upon the vertical displacement of the bosses receiving the fuel rods into the tiered tie plates. Optionally, shanks may be used to further vary fuel rod axial displacement and diameter.
摘要翻译： 示例性实施例涉及使用分层连接板的分层连接板和燃料束。 示例性实施例的连接板可以包括上层和下层的连接板。 示例性实施例分层连接板可以具有分成具有不同垂直（轴向）位移的组或多个层的多个凸起。 示例性实施例燃料束可以使用分层连接板，使得基于将接收燃料棒的凸台垂直移位到分层连接板中的示例性束中的燃料棒可以以不同的垂直位移起始和终止。 可选地，可以使用柄来进一步改变燃料棒的轴向位移和直径。
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公开(公告)号：US20120093275A1
公开(公告)日：2012-04-19
申请号：US12003145
申请日：2007-12-20
CPC分类号： G21C3/3305 , G21C3/322 , G21C3/3315 , G21C3/332 , Y02E30/38
摘要： Example embodiments are directed to tiered tie plates and fuel bundles that use tiered tie plates. Example embodiment tie plates may include upper and lower tiered tie plates. Example embodiment tiered tie plates may have a plurality of bosses divided into groups, or tiers, having differing vertical (axial) displacement. Example embodiment fuel bundles may use tiered tie plates such that fuel rods in example bundles may originate and terminate at different vertical displacements, based upon the vertical displacement of the bosses receiving the fuel rods into the tiered tie plates. Optionally, shanks may be used to further vary fuel rod axial displacement and diameter.
摘要翻译： 示例性实施例涉及使用分层连接板的分层连接板和燃料束。 示例性实施例的连接板可以包括上层和下层的连接板。 示例性实施例分层连接板可以具有分成具有不同垂直（轴向）位移的组或多个层的多个凸起。 示例性实施例燃料束可以使用分层连接板，使得基于将接收燃料棒的凸台垂直移位到分层连接板中的示例性束中的燃料棒可以以不同的垂直位移起始和终止。 可选地，可以使用柄来进一步改变燃料棒的轴向位移和直径。
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公开(公告)号：US20110158373A1
公开(公告)日：2011-06-30
申请号：US12997811
申请日：2009-06-10
申请人： Jean-Pierre Robin
发明人： Jean-Pierre Robin
CPC分类号： G21C3/3206 , G21C3/322 , G21C3/3305 , G21Y2002/201 , G21Y2002/304 , G21Y2004/30 , Y02E30/38
摘要： A nuclear fuel assembly bottom nozzle, of the type including a perforated plate to allow water to pass through it, the nozzle having lateral faces, and at least one anti-debris element positioned on a lateral face to block out debris likely to infiltrate between the bottom nozzle and another adjacent bottom nozzle, characterized in that, in the free state, the or each anti-debris element permanently projects from the lateral face on which it is positioned, the or each anti-debris element being elastically deformable so as to retract towards the lateral face in the event of a force being exerted on the anti-debris element towards the lateral face.
摘要翻译： 核燃料组件底部喷嘴，其类型包括允许水通过其的多孔板，喷嘴具有侧面，以及至少一个位于侧面上的防碎屑元件，以阻挡可能渗入 底部喷嘴和另一个相邻的底部喷嘴，其特征在于，在自由状态下，所述或每个防碎屑元件从其所在的侧面永久地突出，所述或每个防碎屑元件可弹性变形以便缩回 在朝向侧面施加在防碎片元件上的力的情况下朝向侧面。
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