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    Fuel assembly and associated grid for nuclear reactor
    2.
    发明授权
    Fuel assembly and associated grid for nuclear reactor 失效
    燃料组件和核反应堆联网

    公开(公告)号：US06819733B2

    公开(公告)日：2004-11-16

    申请号：US10147215

    申请日：2002-05-15

    申请人： Richard P. Broders ,  Stephen C. Hatfield ,  Michael L. Martin ,  Paul F. Joffre ,  Zeses E. Karoutas ,  Patrick A. Perrotti

    发明人： Richard P. Broders ,  Stephen C. Hatfield ,  Michael L. Martin ,  Paul F. Joffre ,  Zeses E. Karoutas ,  Patrick A. Perrotti

    IPC分类号： G21C334

    CPC分类号： G21C3/356 ,  G21Y2002/20 ,  G21Y2002/30 ,  G21Y2004/30 ,  Y02E30/40

    摘要： An improved grid for use in a fuel assembly of a nuclear reactor includes a plurality of straps that are interconnected with one another in a lattice fashion to define a plurality of cells, with the straps being configured to include a plurality of relatively more compliant springs and a plurality of relatively less compliant dimples, whereby each cell includes only one pair of springs and one pair of dimples disposed therein. The springs and dimples are contoured to engage a fuel rod or a thimble tube disposed within the cell. Each spring directly confronts one of the dimples to provide confronting pairs of features that engage the fuel rods or thimble tubes, with each cell including two pairs of confronting features. The ligaments of the springs and dimples extend in a direction generally perpendicular to the direction of coolant flow through the reactor in order to minimize pressure drop.

    摘要翻译： 用于核反应堆的燃料组件中的改进的格栅包括多个彼此以格子形式彼此互连以限定多个单元的带，其中带被配置为包括多个相对更柔顺的弹簧， 多个相对较小的顺应性凹坑，由此每个单元仅包括一对弹簧和一对布置在其中的凹坑。 弹簧和凹坑的轮廓是与设置在电池内的燃料棒或套管接合。 每个弹簧直接面对一个凹坑，以提供接合燃料棒或套管的面对的特征对，每个单元包括两对相对的特征。 弹簧和凹坑的韧带在大致垂直于冷却剂流过反应器的方向的方向上延伸，以便最小化压降。

    Spacer grid assembly fixture
    3.
    发明授权
    Spacer grid assembly fixture 失效
    间隔网组件

    公开(公告)号：US5110539A

    公开(公告)日：1992-05-05

    申请号：US624338

    申请日：1990-12-07

    申请人： Patrick A. Perrotti ,  Zeses E. Karoutas

    发明人： Patrick A. Perrotti ,  Zeses E. Karoutas

    IPC分类号： G21C3/34

    CPC分类号： G21C3/3424 ,  G21Y2002/201 ,  G21Y2002/302 ,  G21Y2004/30 ,  Y02E30/40

    摘要： A method and apparatus for assembling an egg-crate type grid (10) by orthogonally interengaging slots (30,32) cut transversely into one longitudinal edge of each of a plurality of metal strips (12,14). A first plurality of strips (14) is supported on their lower unslotted edges in north-south orientation so that the strips are uniformly spaced apart in parallel in the east-west direction with all the slots (32) oriented upwardly on the upper edge. The slotted upper edges (26) of adjacent north-south strips are then spread farther apart in the east west direction while maintaining the lower edges (28) at said uniform spacing. The lower, slotted edges (24) of a second plurality of east-west oriented strips are interengaged with the north-south strips while the selected portions of the upper edges of the north-south strips are spread. The upper edges of the first plurality of strips are then returned to the unspread orientation.

    摘要翻译： 用于通过横向切割成多个金属条（12,14）中的每一个的一个纵向边缘的正交互相接合的槽（30,32）来组装蛋箱型格栅（10）的方法和装置。 第一多个条带（14）以南北取向支撑在它们的下部未边缘边缘上，使得条带在东西方向上平行地均匀间隔开，而所有狭槽（32）在上边缘上向上取向。 然后相邻的南北条带的开槽的上边缘（26）在东西方向上分开更远，同时保持下边缘（28）处于所述均匀间隔。 第二多个东西取向带的下开槽边缘（24）与南北条相互接合，而南北条的上边缘的选定部分被扩展。 然后将第一多个条带的上边缘返回到未展开的取向。

    Split-cone spacer grid
    7.
    发明授权
    Split-cone spacer grid 失效
    分割锥间隔网格

    公开(公告)号：US5283821A

    公开(公告)日：1994-02-01

    申请号：US905629

    申请日：1992-06-29

    申请人： Zeses E. Karoutas

    发明人： Zeses E. Karoutas

    IPC分类号： G21C3/322 ,  G21C3/352 ,  G21C3/34

    CPC分类号： G21C3/322 ,  G21C3/352 ,  G21Y2002/201 ,  G21Y2002/302 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/38

    摘要： A flow deflector grid (10) for a nuclear fuel assembly, comprising a plurality of metal strips (12,14) which intersect in a regular array to form an egg-crate type lattice, which defines a plurality of coolant flow channels (16). Each channel has sidewalls (42,44) defined by the strips, a height dimension defined by the height of the strips, a plurality of corners (46) defined by the strip intersections (26), a channel central axis parallel to the height dimension, and a flow cross section normal to the channel axis for coaxially receiving a fuel rod (18) spaced within the channel sidewalls. A unitary flow deflector member (30) is attached to and situated in the corner of each channel so as to be cradled between first and second sidewalls. The deflector member has a hood portion which projects above the height dimension of the channel and which includes a substantially planar vane (66) extending obliquely upward from the first sidewall and oriented transversely to the channel axis, and a substantially planar flow containment wall (48) extending substantially vertically from the second sidewall to the vane. The deflector member also includes a lower, angled bracing portion (50,52) having a height substantially equal to the height dimension of the channel and being attached to and cradled in the corner of the channel, with the hood portion integrally projecting above the bracing portion.

    摘要翻译： 一种用于核燃料组件的导流板（10），包括多个金属条（12,14），所述多个金属条（12,14）以规则阵列相交以形成蛋箱型格子，其限定多个冷却剂流动通道（16） 。 每个通道具有由条限定的侧壁（42,44），由条的高度限定的高度尺寸，由条交点（26）限定的多个拐角（46），平行于高度尺寸的通道中心轴 以及垂直于通道轴线的流动横截面，以同轴地容纳在通道侧壁内间隔开的燃料棒（18）。 单个导流构件（30）附接到每个通道的角部并且位于每个通道的角部，以便在第一和第二侧壁之间被托起。 偏转器构件具有突出在通道的高度尺寸之上的罩部分，其包括从第一侧壁倾斜向上延伸并且横向于通道轴线定向的基本上平面的叶片（66），以及基本上平面的流动容纳壁 ）基本垂直地从第二侧壁延伸到叶片。 偏转器构件还包括具有基本上等于通道的高度尺寸的高度成角度的支撑部分（50,52），并且附接到通道的角部并且悬挂在通道的角部中，罩部分整体地突出在支撑件的上方 一部分。