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    Fuel bundles and nuclear reactor using such fuel bundles
    8.
    发明公开
    Fuel bundles and nuclear reactor using such fuel bundles 失效
    Brennstabbündelund Kernreaktor mit Einsatz derartigerBrennstabbündel

    公开(公告)号：EP0820066A1

    公开(公告)日：1998-01-21

    申请号：EP97305325.9

    申请日：1997-07-16

    申请人： GENERAL ELECTRIC COMPANY

    发明人： Dix, Gary Errol

    IPC分类号： G21C3/322 ,  G21C3/324

    CPC分类号： G21C3/322 ,  G21C3/324 ,  G21Y2002/201 ,  G21Y2004/302 ,  Y02E30/38

    摘要： A fuel bundle assembly for a nuclear reactor includes an elongated, open ended channel (116) having an interior flow area which increases in the upper portion of the channel (116); a plurality of fuel rods in the channel (116) including full length rods (120) extending substantially the length of the channel (116) and at least one part length fuel rod (120 1 ) having an axial length shorter than the full length rods (120). A plurality of spacers (S) laterally support the full length fuel rods (120) and the one or more part length fuel rods (120 1 ) along respective axial lengths thereof, and one (S 1 ) of the spacers (S) in an upward flow direction which is the last spacer which supports all of the full length and part length fuel rods (120,120 1 ), is located in an upper region of the channel (116) where the interior flow area is increased.

    摘要翻译： 用于核反应堆的燃料束组件包括具有在通道（116）的上部部分中增加的内部流动区域的细长开口通道（116）。 所述通道（116）中的多个燃料棒包括基本上沿着所述通道（116）的长度延伸的全长杆（120）和至少一个部分长度的燃料棒（120 1），其长度短于所述通道 长杆（120）。 多个间隔件（S）沿着其轴向长度横向地支撑全长燃料棒（120）和一个或多个部分长度的燃料棒（120 1），并且一个（S 1） S）位于在内部流动区域增加的通道（116）的上部区域中，其是支撑所有全长和部分长度的燃料棒（120,120 1）的最后一个间隔件的向上流动方向 。

    Fuel bundle with improved resistance to bulge and improved critical power performance
    9.
    发明公开
    Fuel bundle with improved resistance to bulge and improved critical power performance 失效
    具有增加的Anschwellungsbeständigkeit和改善输出燃料组件与临界功率进行比较。

    公开(公告)号：EP0608994A1

    公开(公告)日：1994-08-03

    申请号：EP94300298.0

    申请日：1994-01-17

    申请人： GENERAL ELECTRIC COMPANY

    发明人： Reese, Anthony Paul

    IPC分类号： G21C3/324

    CPC分类号： G21C3/324 ,  Y02E30/40

    摘要： In a fuel bundle having an array of fuel rods of 9-by-9 or greater, removal of the corner fuel rods from the array occurs. This removal enables the remainder of the array rod-to -rod pitch to be decreased. Further, and over this array with the corner fuel rod removed, a fuel bundle channel having rounded corners of increased radius of curvature or flattened corners imparting a broadly taped curvature is utilized. In both cases, the effective flat span of the fuel bundle sides is reduced with the result that the new fuel bundle incorporates improved resistance to channel bulge with improved critical power.

    摘要翻译： 在具有为9乘9或更大，从阵列切除角燃料棒的发生燃料棒的阵列的燃料棒束。 这种去除启用阵列条至-ROD间距的剩余部分降低。 曲率半径的增加或扁平角部赋予广义地胶粘曲率另外，并用该阵列与角燃料棒除去，燃料棒束通道具有圆角被利用。 在这两种情况下，所述燃料棒束两侧的有效跨度平与减少的结果所做的新燃料棒束集成了改进的信道隆起电阻具有改进的临界功率。

    Fuel assembly with channel box
    10.
    发明公开
    Fuel assembly with channel box 无效
    BrennstoffbündelmitStrömungskanal。

    公开(公告)号：EP0501259A1

    公开(公告)日：1992-09-02

    申请号：EP92102529.2

    申请日：1992-02-14

    申请人： HITACHI, LTD. ,  Hitachi Engineering Co., Ltd.

    发明人： Yanagi, Yoshihiko ,  Nakajima, Junjiro ,  Kanamori, Kenji ,  Umehara, Hajime ,  Aizawa, Yasuhiro ,  Sakuma, Toraki ,  Hirakawa, Hiromasa ,  Ishizaki, Hideaki

    IPC分类号： G21C3/324

    CPC分类号： G21C3/324 ,  G21Y2002/201 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/40

    摘要： A fuel assembly comprises a plurality of fuel rods (3) supported by an upper tie plate (7) and a lower tie plate (8) respectively at each of upper end portion and lower end portion, and a channel box (2, 2A) surrounding a bundle of the fuel rods (3) and the lower tie plate (8). The fuel assembly forms a natural uranium region at lower end portion of effective fuel length portion. A wall thickness at a lower thick wall region of the channel box (2, 2A) is thicker than the wall thickness at a region locating upward from the lower thick wall region and between corner portions of the channel box. Upper end of the lower thick wall region locates upward from upside of the lower tie plate and downward from upper end of the natural uranium region. A wall thickness at the corner portion of the channel box (2, 2A) is thicker than the wall thickness at middle portion of said wall between the corner positions at the region locating upward from the lower thick wall region.
    The fuel assembly is able to reduce stresses caused in the channel box (2, 2A) in an earthquake, and, is able to improve fuel economy.

    摘要翻译： 燃料组件包括分别在上端部分和下端部分中的上连接板（7）和下连接板（8）支撑的多个燃料棒（3）和通道箱（2,2A） 围绕一束燃料棒（3）和下连接板（8）。 燃料组件在有效燃料长度部分的下端部分形成天然铀区域。 在通道箱（2,2A）的较低厚壁区域处的壁厚比在下壁厚壁区域和通道箱的拐角部分之间的区域处的壁厚厚。 下部厚壁区域的上端位于下部连接板的上侧，并从天然铀区域的上端向下。 在通道箱（2,2A）的角部处的壁厚比在下壁厚区域上方的区域的角位置之间的壁的中间部分处的壁厚更厚。 燃料组件能够减少地震中通道箱（2,2A）中产生的应力，并且能够提高燃油经济性。