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公开(公告)号：US08594269B2
公开(公告)日：2013-11-26
申请号：US11332058
申请日：2006-01-13
申请人： Yuriy Aleshin , James A. Sparrow , Keith J. Drudy
发明人： Yuriy Aleshin , James A. Sparrow , Keith J. Drudy
IPC分类号： G21C3/34
CPC分类号： G21C3/32 , G21Y2002/104 , G21Y2002/206 , G21Y2002/303 , G21Y2002/304 , G21Y2004/30 , Y02E30/40
摘要： The present invention provides novel fuel assemblies for use with PWR nuclear reactors and power plants, and in particular, VVER nuclear reactors. The fuel assemblies offer enhanced structural stability, skeletal rigidity, and distortion (bow and twist) resistance to support high burn-up fuel management. Each fuel assembly may include a plurality of fuel rods, a plurality of control rods and guide thimbles, at least one instrumentation tube, and a plurality of grids. At least one fuel rod is replaced with a structural support replacement rod made from zirconium (Zr) alloy, stainless steel, or any other suitable material. The structural support replacement rod may be hollow or solid. The structural support replacement rods are preferably disposed at or about the periphery, and in some cases, the corners of the geometric array, which is preferably a hexagon or square.
摘要翻译： 本发明提供了用于PWR核反应堆和发电厂，特别是VVER核反应堆的新型燃料组件。 燃料组件提供增强的结构稳定性，骨架刚度和变形（弯曲和扭转）阻力，以支持高燃耗燃料管理。 每个燃料组件可以包括多个燃料棒，多个控制棒和引导套管，至少一个仪表管和多个网格。 使用由锆（Zr）合金，不锈钢或任何其他合适的材料制成的结构支撑置换杆代替至少一个燃料棒。 结构支撑置换杆可以是中空的或固体的。 结构支撑置换杆优选地设置在周边处或周围，并且在一些情况下设置在几何阵列的角部，其优选地是六边形或正方形。
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公开(公告)号：US4925619A
公开(公告)日：1990-05-15
申请号：US353563
申请日：1989-05-18
申请人： James A. Sparrow , John J. McEvoy
发明人： James A. Sparrow , John J. McEvoy
摘要： An apparatus is disclosed for determining pressurization in a nuclear fuel rod and the like by measuring the increase in diameter of the fuel rod occasioned by the internal pressurization of the rod, and which includes an elongate receiving member having front and rear ends and an axial opening extending therein. A gauge is positioned in the axial opening and is adapted to coaxially surround the fuel rod and then measure an increase in diameter of a fuel rod caused by a pressure increase within the rod. The gauge is formed from a substantially C-shaped bracket having inner and outer surfaces, spaced distal end portions and a more thin medial portion, and with a strain gauge mounted on both the inner and outer medial surfaces. A microprocessor is connected to the strain gauges so that changes in electrical output from the strain gauges can be measured to determine the increase in diameter of the fuel rod upon pressurization of the fuel rod.
摘要翻译： 公开了一种用于通过测量由杆的内部加压引起的燃料棒的直径增加来确定核燃料棒等中的加压的装置，并且包括具有前端和后端以及轴向开口的细长接收构件 在其中延伸。 计量器位于轴向开口中并且适于同轴地围绕燃料棒，然后测量由杆内的压力增加引起的燃料棒的直径的增加。 仪表由具有内表面和外表面，间隔开的远端部分和更薄的中间部分的基本上C形的支架形成，并且具有安装在内内表面和外内表面上的应变仪。 微处理器连接到应变计，使得可以测量来自应变计的电力输出的变化，以确定在燃料棒加压时燃料棒的直径的增加。
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公开(公告)号：US20130070890A1
公开(公告)日：2013-03-21
申请号：US13235541
申请日：2011-09-19
申请人： Hua Jiang , James A. Sparrow
发明人： Hua Jiang , James A. Sparrow
IPC分类号： G21C3/04
摘要： A nuclear fuel assembly component such as a control rod that has a cylindrical insert such as neutron absorbing material that is closely received within a cladding that is sealed at either end with end caps. The cylindrical member has grooves formed in its side wall extending from an upper surface to a lower surface to permit air to escape from the cladding as the cylindrical member is loaded into the cladding during manufacture.
摘要翻译： 一种核燃料组件部件，例如控制杆，其具有圆柱形插入件，例如中空吸收材料，其紧密地接收在外壳内，其末端与端盖密封。 圆柱形构件在其侧壁中形成有从上表面延伸到下表面的凹槽，以便在制造过程中当圆柱形构件装入包层时允许空气从包层逸出。
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公开(公告)号：US20090252281A1
公开(公告)日：2009-10-08
申请号：US12332662
申请日：2008-12-11
IPC分类号： G21C3/32
CPC分类号： G21C7/20 , G21Y2002/104 , G21Y2002/304 , G21Y2004/40 , Y02E30/39
摘要： A nuclear fuel assembly having a tube-in-tube control rod guide tube design that incorporates an end plug that extends axially upward to an elevation above the lower most grid where it is sealed at its upper end to the lower end of the control rod guide tube. The guide tube lower end plug has a threaded recess in its upper surface that mates with a corresponding dashpot end plug threaded extension that is formed as an insert in the lower end of the guide tube. A hole formed through the outer wall of the guide tube end plug at the elevation of the lower portion of the recess provides a positive inspection port for assuring the proper seating of the dashpot. A method of manufacture of such a fuel assembly is also disclosed.
摘要翻译： 一种核燃料组件，其具有管中管控制杆引导管设计，其包括沿轴向向上延伸到最下部格栅上方的高度的端塞，其在其上端被密封在控制杆引导件的下端 管。 引导管下端塞在其上表面具有螺纹凹槽，其与相应的缓冲器端塞螺纹延伸部配合，该延伸部形成为在导管的下端中的插入件。 在凹槽下部的高度处，通过导管端塞的外壁形成的孔提供了一个正的检查口，用于确保缓冲器的适当的安放。 还公开了一种制造这种燃料组件的方法。
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5.发明授权Reconstitutable control assembly having removable control rods with detachable split upper end plugs 失效可组装的控制组件具有可拆卸的分离上端塞的可拆卸的控制杆
公开(公告)号：US4888151A
公开(公告)日：1989-12-19
申请号：US284566
申请日：1988-12-15
IPC分类号： G21C7/117
CPC分类号： G21C7/117 , G21Y2002/101 , G21Y2002/402 , G21Y2004/301 , G21Y2004/50 , Y02E30/39
摘要： A reconstitutable control assembly has a spider structure which supports control rods by detachable attachment joints. Each attachment joint includes a hollow connecting finger on the spider structure and an elongated detachable split upper end plug on each control rod. The split upper end plug includes a pair of separate upper and lower plug portions. The upper plug portion has upper, middle and lower sections, whereas the lower plug portion has upper, middle and lower segments. The upper section of the upper plug portion is rigidly attached to the connecting finger on the spider structure, whereas the lower segment of the lower plug portion is rigidly connected to the control rod. Also, the lower section of the upper plug portion and the middle segment of the lower plug portion have complementary threads defined thereon for rigidly threadably attaching the upper and lower plug portions to one another. Two embodiments of locking features can be used in conjunction with the upper and lower plug portions for locking them together so as to resist their unthreading from one another.
摘要翻译： 可重构的控制组件具有通过可拆卸的连接接头支撑控制杆的蜘蛛结构。 每个附接接头包括在蜘蛛结构上的空心连接指状物和每个控制杆上的细长可拆卸分离上端塞。 分开的上端塞包括一对分离的上部和下部插塞部分。 上塞部分具有上部，中部和下部，而下部塞部具有上部，中部和下部。 上塞部分的上部刚性地附接到蜘蛛结构上的连接指状物，而下塞部分的下部段刚性地连接到控制棒上。 此外，上塞部分的下部分和下塞部分的中段具有限定在其上的互补螺纹，用于将上部和下部塞部分彼此刚性地螺纹连接。 锁定特征的两个实施例可以与上部和下部塞子部分结合使用，以将它们锁定在一起，以抵抗它们彼此的相互脱开。
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公开(公告)号：US07412021B2
公开(公告)日：2008-08-12
申请号：US11189472
申请日：2005-07-26
IPC分类号： G21C7/00
CPC分类号： G21C7/10 , G21Y2002/104 , G21Y2002/201 , G21Y2002/206 , G21Y2002/304 , G21Y2004/30 , Y02E30/39
摘要： An advanced gray rod control assembly (GRCA) is for a nuclear reactor. The reactor has a plurality of fuel assemblies each including numerous elongated fuel rods supported in an organized array by substantially transverse support grids, and a plurality of guide thimbles disposed through the support grids and along the fuel rods. The GRCA includes a spider assembly structured to provide controlled insertion of gray rod assemblies within the thimbles of the fuel assembly, thereby controlling the rate of power produced by the reactor. Each gray rod assembly includes an elongated tubular member, a first end plug, a second end plug, a substantially pure silver neutron-absorber disposed within the tubular member, and a support tube surrounding the neutron-absorber within the tubular member to resist silver-swelling. Delta-power of the reactor is improved by minimizing the exposed surface area of the absorber and distributing it among all of the rods of the GRCA.
摘要翻译： 先进的灰棒控制组件（GRCA）用于核反应堆。 反应器具有多个燃料组件，每个燃料组件包括通过基本上横向的支撑网格以有组织的阵列支撑的许多细长的燃料棒，以及穿过支撑格栅并沿着燃料棒设置的多个导向套管。 GRCA包括构造成在燃料组件的套管内提供控制插入灰棒组件的蜘蛛组件，从而控制由反应器产生的功率速率。 每个灰色杆组件包括细长的管状构件，第一端塞，第二端塞，设置在管状构件内的基本上纯的中子吸收器，以及围绕管状构件内的中子吸收体的支撑管， 肿胀。 通过最小化吸收器的暴露表面积并将其分布在GRCA的所有棒中来改善反应器的三角形功率。
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公开(公告)号：US5180549A
公开(公告)日：1993-01-19
申请号：US736359
申请日：1991-07-26
CPC分类号： G21C3/12 , G21Y2002/201 , G21Y2002/301 , G21Y2004/30 , G21Y2004/305 , Y02E30/40
摘要： A double enclosure top nozzle subassembly for a nuclear fuel assembly includes an upper structure having a top plate and an outer depending peripheral sidewall enclosure, a lower structure having a lower adapter plate and an inner upstanding peripheral sidewall enclosure disposed below the top plate and within the outer sidewall enclosure. The outer and inner sidewall enclosures are slidably movable relative to one another as the top plate moves toward and away from adapter plate. A plurality of resiliently-yieldable biasing devices, such as leaf springs extend between and engage the top plate and lower adapter plate. Interengagable structure on the lower and upper edges of the respective outer and inner sidewall enclosures limit movement of the top plate and lower adapter plate away from one another so as to retain the outer and inner sidewall enclosures in sliding contacting relationship together. The leaf springs are movable between compressed and expanded states in response respectively to application and removal of a hold-down force on the upper structure in the direction of the lower structure for permitting and causing movement of the top plate toward and away from the adapter plate and thereby the top nozzle subassembly between compressed and expanded conditions.
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公开(公告)号：US4986959A
公开(公告)日：1991-01-22
申请号：US353303
申请日：1989-05-17
申请人： James A. Sparrow , Yu C. Lee
发明人： James A. Sparrow , Yu C. Lee
CPC分类号： G21C3/3315 , G21C3/12 , G21C3/331 , G21C3/33 , G21Y2002/201 , G21Y2002/301 , G21Y2004/30 , G21Y2004/305 , Y02E30/40
摘要： An expandable top nozzle subassembly for a nuclear fuel assembly includes an upper structure having a top plate and a depending peripheral sidewall enclosure, a lower adapter plate disposed below the top plate and within the enclosure with the adapter plate and sidewall enclosure being slidably movable relative to one another so as to move the top plate toward and away from adapter plate, and a plurality of resiliently-yieldable biasing devices extending between and engaging the top plate and lower adapter plate. Interengagable structure on a lower edge of the enclosure and on a peripheral edge of the adapter plate capture and retain the adapter plate within the enclosure upon movement of the enclosure relative to the adapter plate which moves the top plate away from the adapter plate. The biasing devices in the form of coil springs are movable between compressed and expanded states in response respectively to application and removal of a hold-down force on the upper structure in the direction of the adapter plate for permitting and causing movement of the enclosure relative to the adapter plate so as to move the top plate toward and away from the adapter plate and thereby the top nozzle subassembly between compressed and expanded conditions.
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9.发明授权Apparatus and method for refurbishing a spectral shift mechanism for a nuclear reactor fuel assembly 失效用于翻新核反应堆燃料组件的光谱移位机构的装置和方法
公开(公告)号：US4728480A
公开(公告)日：1988-03-01
申请号：US701052
申请日：1985-02-12
申请人： Frank J. Baloh , James A. Sparrow
发明人： Frank J. Baloh , James A. Sparrow
CPC分类号： G21C7/27 , G21C7/117 , G21Y2002/40 , G21Y2004/302 , Y02E30/39
摘要： A fuel assembly in a nuclear reactor has a spectral shift apparatus including a plurality of displacer rods for controlling reactivity in the assembly and an apparatus for refurbishing the displacer rods for reuse. Each displacer rod contains a quantity of water equivalent to a small fraction of the rod volume. Also, the spectral shift apparatus includes a manifold with a central plenum and a rupturable disk connected to the manifold. The manifold is connected in flow communication with the displacer rods. The disk which seals the displacer rods as well as the manifold plenum is rupturable at a given pressure differential thereacross so as to allow entry of the moderator/coolant liquid into the manifold and rods. Also, a screen adjacent the disk restricts it to rupturing in one direction only. The spectral shift refurbishing apparatus includes a charging tool insertable within the manifold plenum and separate air and water conduits interconnecting the manifold and upper and lower portions of the respective displacer rods in flow communication so as to provide respective entrance paths for air under pressure from the charging tool to the upper rod portions and separate exit paths for liquid from the lower rod portions to the charging tool such that introduction of air under pressure along the entrance paths will force liquid from the rods along the exit paths until the level of the liquid within the rods lowers to the level of the conduits in their lower portions.
摘要翻译： 核反应堆中的燃料组件具有光谱移位装置，其包括用于控制组件中的反应性的多个置换棒和用于重新置换置换棒的装置。 每个置换棒含有相当于棒体积的一小部分的水量。 此外，光谱移位装置包括具有中央增压室的歧管和连接到歧管的可破裂的盘。 歧管与置换棒流体连通。 密封置换器棒以及歧管集气室的盘在给定的压力差下是可破裂的，以允许调节剂/冷却剂液体进入歧管和棒。 而且，与磁盘相邻的屏幕也限制其在一个方向上的破裂。 光谱变换翻新装置包括可插入歧管集气室内的充电工具和分开的空气和水管道，其将歧管和相应的置换棒的上部和下部互相连通，以便相互连通，以便为来自充电的压力下的空气提供相应的入口路径 上部杆部分的工具和用于液体从下杆部分到装载工具的单独出口路径，使得沿着入口路径的压力下的空气的引入将迫使来自杆的液体沿出口路径直到液体内的液面 棒在其下部降低到导管的水平。
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公开(公告)号：US06738447B1
公开(公告)日：2004-05-18
申请号：US10444469
申请日：2003-05-22
IPC分类号： G21C300
CPC分类号： G21C3/3315 , G21C3/331 , G21C7/20 , G21Y2002/303 , G21Y2002/304 , G21Y2004/30 , Y02E30/39
摘要： A high energy absorption top nozzle for a nuclear fuel assembly that employs an elongated upper tubular housing and an elongated lower tubular housing slidable within the upper tubular housing. The upper and lower housings are biased away from each other by a plurality of longitudinally extending springs that are restrained by a longitudinally moveable piston whose upward travel is limited within the upper housing. The energy imparted to the nozzle by a control rod scram is mostly absorbed by the springs and the hydraulic affect of the piston within the nozzle.
摘要翻译： 用于核燃料组件的高能量吸收顶部喷嘴，其采用细长的上部管状壳体和可在上部管状壳体内滑动的细长的下部管状壳体。 上壳体和下壳体被多个纵向延伸的弹簧彼此远离，该弹簧由纵向可移动的活塞约束，其向上行程限制在上壳体内。 通过控制杆冲击而施加到喷嘴的能量主要被弹簧吸收并且活塞在喷嘴内的液压影响。
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