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    • 1. 发明申请
    • OPTIMIZED FLOWER TUBES AND OPTIMIZED ADVANCED GRID CONFIGURATIONS
    • 优化的花管和优化的高级配置
    • WO2012030579A3
    • 2013-06-13
    • PCT/US2011048722
    • 2011-08-23
    • WESTINGHOUSE ELECTRIC CORP
    • JIANG XIAOYAN JANEXU YIBANKAROUTAS Z E
    • G21C3/34
    • G21C3/356G21C3/344G21C3/352G21Y2002/201G21Y2002/302G21Y2002/303G21Y2004/30Y02E30/40
    • A support grid (26) for a nuclear fuel assembly (20), the fuel rod assembly (20) having a generally cylindrical fuel rod (28) with a diameter, wherein the support grid (26) includes a frame assembly (40) having a plurality of outer straps (44) and a plurality tubular members (50) and/or helical frame members (70). The tubular members (50)/helical frame members (70) have a contact portion (54, 55) structured to contact an adjacent helical frame member (70) and at least one helical fuel rod contact portion (52) with a lesser diameter. The lesser diameter is generally equivalent to the fuel rod (28) diameter such that a fuel rod disposed in the helical frame member (70) would engage the inner helical frame member (70) at helical fuel rod contact portion (52). The helical fuel rod contact portion (52) may have a variable pitch.
    • 一种用于核燃料组件(20)的支撑格栅(26),所述燃料棒组件(20)具有直径为大致圆柱形的燃料棒(28),其中支撑格栅(26)包括框架组件(40) 多个外带(44)和多个管状构件(50)和/或螺旋框架构件(70)。 管状构件(50)/螺旋构架构件(70)具有接触部分(54,55),其被构造成接触相邻的螺旋框架构件(70)和至少一个具有较小直径的螺旋式燃料棒接触部分(52)。 较小的直径通常等同于燃料棒(28)的直径,使得设置在螺旋形框架构件(70)中的燃料棒将以螺旋形燃料棒接触部分(52)接合内部螺旋形框架构件(70)。 螺旋燃料棒接触部分(52)可以具有可变的间距。
    • 7. 发明申请
    • METHOD OF MANUFACTURING A ZIRCONIUM BASED ALLOY COMPONENT FOR USE IN NUCLEAR INDUSTRY
    • 制造用于核工业的基于锆的合金组分的方法
    • WO00029633A1
    • 2000-05-25
    • PCT/SE1999/002069
    • 1999-11-12
    • G21C3/10C22C20060101C22C16/00C22F1/00C22F1/18G21C3/06G21C3/07G21C3/30G21C3/34
    • C22C16/00C22C1/02G21C3/07G21C3/30
    • A method for producing a component intended to be subjected to an increased radiation in a corrosive environment, wherein the component includes an alloy which at a first, high temperature has a BCC-structure and which at a second, lower temperature has an HCP-structure, wherein the alloy includes at least one alloying element which has a low solubility in the HCP-structure and wherein the alloy is rapidly cooled from the first to the second temperature while secondary phase particles, which include said alloying element and which contribute to improve corrosion properties are separated in the HCP-structure. The rapid cooling is performed in two stages, wherein the first stage includes a rapid cooling at a relatively lower intensity and the second, subsequent stage includes a rapid cooling at a relatively higher intensity.
    • 一种用于制造在腐蚀性环境中经受增加辐射的部件的方法,其中所述部件包括在第一高温下具有BCC结构并且在第二较低温度下具有HCP结构的合金 ,其中所述合金包括至少一种在HCP结构中具有低溶解度的合金元素,并且其中所述合金从第一温度快速冷却至第二温度,而包含所述合金元素并有助于改善腐蚀的第二相颗粒 性质在HCP结构中分离。 快速冷却分两个阶段进行,其中第一阶段包括相对较低强度的快速冷却,第二阶段包括相对较高强度的快速冷却。
    • 8. 发明申请
    • A NUCLEAR FUEL ASSEMBLY WITH HYDRAULICALLY BALANCED MIXING VANES
    • 具有液压平衡混合气门的核燃料组件
    • WO99001873A2
    • 1999-01-14
    • PCT/US1998/013222
    • 1998-06-25
    • G21C3/34G21C3/322G21C3/352G21C
    • G21C3/352G21C3/322G21Y2002/302G21Y2002/303Y02E30/38
    • A support grid for laterally maintaining the relative position of elongated fuel elements within a fuel assembly for use within a core of a nuclear reactor. The grid is formed in the shape of a lattice with the intersecting lattice members defining a plurality of cells, most of which respectively support the nuclear fuel elements. The reamining cells support nuclear control rod guide tubes and instrumentation thimbles. The cells supporting the nuclear fuel elements are provided with diagonally positioned springs on two, adjacent walls. The springs support the fuel elements against dimples which protrude from the opposite cell walls. The adjacent, diagonal springs in each fuel element cell are inclined in opposite directions. The walls of the cells supporting the control rod guide tubes are embossed along their height at the locations intermediate the intersection between adjoining walls with a concave notch having a curvature which conforms to the outside surface curvature of the control rod guide tubes. The grid is provided with mixing vanes which are positioned in a symmetrical, regional pattern, with the pattern varying between adjacent regions, and configured such that the hydraulic forces across the center of the grid are balanced. The grid is reinforced with welds at the mid point of the intersection of the lattice straps.
    • 用于横向维持细长燃料元件在燃料组件内的相对位置以用于核反应堆的核心内的支撑网格。 栅格形成为具有限定多个单元的相交晶格构件的格子形状,其中大部分单元分别支撑核燃料元件。 注射细胞支持核控制杆导管和仪器套管。 支撑核燃料元件的电池在两个相邻的壁上设置有对角定位的弹簧。 弹簧将燃料元件抵靠从相对的细胞壁突出的凹坑。 每个燃料元件单元中相邻的对角弹簧在相反方向上倾斜。 支撑控制棒引导管的单元的壁在其相邻壁之间的相交处之间的位置处沿其高度压花,其凹口具有符合控制棒导管的外表面曲率的曲率。 格栅设置有以对称的局部图案定位的混合叶片,其中图案在相邻区域之间变化,并且构造成使得横跨网格中心的液压力平衡。 格栅在格子带交叉点的中点用焊缝加固。
    • 9. 发明申请
    • COOLANT MIXING GRID FOR NUCLEAR FUEL ASSEMBLY
    • 用于核燃料组件的冷却混合网
    • WO98047153A1
    • 1998-10-22
    • PCT/GB1998/001040
    • 1998-04-08
    • G21C3/34G21C3/322
    • G21C3/322G21Y2002/201G21Y2004/305Y02E30/38
    • A fuel assembly for a nuclear reactor is described, the fuel assembly including: a plurality of fuel pins (12) extending substantially parallel to the axis of the assembly and to each other; at least two structural grids spaced apart from each other, the grids being in contact with said fuel pins (12) and maintaining said fuel pins substantially mutually parallel and preventing contact therebetween, wherein the fuel assembly further comprises at least one mixing grid (50) situated intermediate said at least two structural grids, the fuel assembly being characterised in that said mixing grid (50) is positioned and fixedly located out of substantial contact with said fuel pins (12), the mixing grid also having turbulence inducing means (61) to promote turbulence in a coolant (62) flowing through said fuel assembly in use and in that the mixing grid is formed from sheet metal wherein the plane of the metal sheet from which the mixing grid is formed lies in a plane which is transverse to the axis of the fuel pin assembly.
    • 描述了用于核反应堆的燃料组件,燃料组件包括:基本上平行于组件的轴线并彼此延伸的多个燃料销(12); 至少两个彼此间隔开的结构网格,所述网格与所述燃料销(12)接触并且保持所述燃料销基本相互平行并防止其间的接触,其中所述燃料组件还包括至少一个混合格栅(50) 所述燃料组件的特征在于,所述混合格栅(50)定位并固定地位于与所述燃料销(12)基本接触之外,所述混合格栅还具有湍流诱导装置(61) 以促进在使用中流过所述燃料组件的冷却剂(62)中的湍流,并且混合格栅由金属板形成,其中形成混合格栅的金属板的平面位于横向于 燃油销组件的轴线。