公开(公告)号：US06738447B1

公开(公告)日：2004-05-18

申请号：US10444469

申请日：2003-05-22

申请人： James A. Sparrow ,  Yuriy Aleshin ,  Aleksey Slyeptsov

发明人： James A. Sparrow ,  Yuriy Aleshin ,  Aleksey Slyeptsov

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。

公开(公告)号：US20040076256A1

公开(公告)日：2004-04-22

申请号：US10287505

申请日：2002-11-05

申请人： MITSUBISHI NUCLEAR FUEL CO., LTD. ,  MITSUBISHI HEAVY INDUSTRIES, LTD. ,  NUCLEAR DEVELOPMENT CORPORATION

发明人： Toshiya Kido ,  Kimio Nakayama ,  Yasunao Yamaguchi

IPC分类号： G21C003/34

CPC分类号： G21C21/00 ,  G21C3/3206 ,  G21Y2002/103 ,  G21Y2002/206 ,  G21Y2002/303 ,  G21Y2004/201 ,  G21Y2004/40 ,  Y02E30/40

摘要： One object of the present invention is to provide a production method for a nuclear fuel assembly support grid that improves the corrosion resistance of welded parts without impairing the characteristics of the support grid so as to be able adequately withstand highly efficient operation. In order to achieve the object, the present invention provide a production method for a nuclear fuel assembly support grid comprising the steps of: assembling a plurality of straps in a grid form; welding intersections of each strap; and carrying out annealing thereafter to precipitate an intermetallic compound on the welded parts.

摘要翻译： 本发明的一个目的是提供一种用于提高焊接部件的耐腐蚀性的核燃料组件支撑格栅的制造方法，而不会损害支撑格栅的特性，从而能够充分地承受高效率的操作。 为了实现该目的，本发明提供了一种用于核燃料组件支撑格栅的制造方法，包括以下步骤：以网格形式组装多个带; 每个胶带的焊接交叉点; 然后进行退火以在焊接部分上沉淀金属间化合物。

公开(公告)号：US06718811B2

公开(公告)日：2004-04-13

申请号：US09348761

申请日：1999-07-07

申请人： Jean Drillon ,  Jean-Luc Aubin

发明人： Jean Drillon ,  Jean-Luc Aubin

IPC分类号： B21B1708

CPC分类号： B21B21/005 ,  B21B25/00 ,  B21B2015/0014 ,  G21C7/20 ,  G21C21/00 ,  G21Y2002/204 ,  G21Y2002/206 ,  G21Y2002/303 ,  G21Y2004/30 ,  G21Y2004/501 ,  Y02E30/39

摘要： A tubular blank (22) is rolled on a mandrel (14) in a pilgrim rolling mill. In a first rolling stage, a first part of the blank (22) is rolled on a first part (18,19) of the mandrel (14), with a reduction of the outside diameter of the blank (22) to the outside diameter of the guide tube and a reduction of the wall thickness of the blank (22) to one of a first wall thickness (e1) and a second wall thickness (e2) exceeding the first wall thickness (e1). The mandrel (14) is advanced in the axial direction. A second part of the blank (22) is rolled on a second part (20,21) of the mandrel spaced from the first part in the axial direction with a reduction of the outside diameter of the blank to the outside diameter of the guide tube and a reduction of the wall thickness of the blank (22) to the other of the first wall thickness (e1) and second wall thickness (e2).

摘要翻译： 管状坯料（22）在朝圣者轧机的心轴（14）上滚动。 在第一滚动阶段中，坯料（22）的第一部分在心轴（14）的第一部分（18,19）上滚动，坯料（22）的外径减小到外径 和将坯料（22）的壁厚减小到超过第一壁厚（e1）的第一壁厚（e1）和第二壁厚（e2）中的一个。 心轴（14）沿轴向前进。 坯料（22）的第二部分在芯轴的第二部分（20,21）上滚动，心轴的第二部分（20,21）与第一部分沿轴向间隔开，同时坯料的外径减小到导管的外径 以及将坯料（22）的壁厚减小到第一壁厚（e1）和第二壁厚（e2）中的另一个。

公开(公告)号：US06714619B2

公开(公告)日：2004-03-30

申请号：US10215996

申请日：2002-08-07

申请人： Dongseok Oh ,  Taehyun Chun ,  Wangkee In ,  Keenam Song ,  Hyungkyu Kim ,  Heungseok Kang ,  Kyungho Yoon ,  Younho Jung

发明人： Dongseok Oh ,  Taehyun Chun ,  Wangkee In ,  Keenam Song ,  Hyungkyu Kim ,  Heungseok Kang ,  Kyungho Yoon ,  Younho Jung

IPC分类号： G21C334

CPC分类号： G21C3/322 ,  G21C3/352 ,  G21Y2002/201 ,  G21Y2002/303 ,  G21Y2004/302 ,  Y02E30/38

摘要： A spacer grid for use in a nuclear fuel assembly has double-deflected vanes that guide an axial flow of coolant around fuel rods and thereby generate swirl flow. The vanes each have a double bend projecting upwardly from first inner straps and projecting toward one fuel rod. The vanes are sufficiently wide at their bases to prevent inadvertent deformation due to contact with fuel rods during an insertion of fuel rods into the cells. The vanes also make a smooth variation in the cross-sectional area of the coolant channel at the outlet of the spacer grid, thus reducing a loss of pressure during reactor operation.

摘要翻译： 用于核燃料组件的间隔栅格具有引导冷却剂在燃料棒周围的轴向流动并由此产生涡流的双偏转叶片。 叶片各自具有从第一内带向上突出并向一个燃料棒突出的双重弯曲。 叶片在其底部足够宽，以防止在将燃料棒插入电池期间由于与燃料棒接触而导致的意外变形。 叶片还使得间隔栅格出口处的冷却剂通道的横截面积的平滑变化，从而减少了反应器操作期间的压力损失。

公开(公告)号：US06671344B2

公开(公告)日：2003-12-30

申请号：US10178743

申请日：2002-06-25

申请人： Kenichi Matsunaga ,  Ganji Abe ,  Kazuo Murakami ,  Koichi Ue ,  Takashi Shige ,  Etsuryo Kita ,  Shizuo Inoue ,  Tsuneo Mandai

发明人： Kenichi Matsunaga ,  Ganji Abe ,  Kazuo Murakami ,  Koichi Ue ,  Takashi Shige ,  Etsuryo Kita ,  Shizuo Inoue ,  Tsuneo Mandai

IPC分类号： G21F5008

CPC分类号： G21F5/12 ,  G21F5/005 ,  G21Y2002/104 ,  G21Y2002/206 ,  G21Y2002/303 ,  G21Y2002/501 ,  G21Y2004/30 ,  G21Y2004/40

摘要： A primary lid is set in a top opening of a vessel body that contains radioactive substance, and closes the top opening. The peripheral edge portion of the primary lid is welded to the inner peripheral surface of the vessel body. As the primary lid is welded, steam in the vessel body is discharged to the outside through a discharge hole in the primary lid, and a shield gas is filled into or run through a space in the outer peripheral portion of the primary lid, so as to prevent the steam from flowing into the welding portion.

摘要翻译： 将初级盖设置在容纳体的顶部开口中，该容器主体包含放射性物质，并封闭顶部开口。 主盖的周缘部焊接在容器主体的内周面。 当主盖被焊接时，容器主体中的蒸汽通过主盖中的排放孔排放到外部，并且屏蔽气体被填充到主盖的外周部分的空间中， 以防止蒸汽流入焊接部分。

公开(公告)号：US20030227991A1

公开(公告)日：2003-12-11

申请号：US10219610

申请日：2002-08-15

发明人： Young-Hwan Kang ,  Kee-Nam Choo ,  Bong-Goo Kim ,  Man-Soon Cho ,  Jae-Min Sohn ,  Do-Sik Kim ,  Jong-Man Park ,  Jong-Myeong Oh ,  Sung-Jae Park ,  Yoon-Taeg Shin

IPC分类号： G21G001/00

CPC分类号： G21C17/00 ,  G21C1/303 ,  G21Y2002/20 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/39

摘要： An instrumented capsule for material irradiation tests in research reactors. The instrumented capsule performs an optimum material irradiation test under a testing environment similar to the operational environment of a real reactor. The capsule minimizes the influence of flow-induced vibration caused by forced-circulation-type coolant flow in a research reactor, and overcomes the problems experienced in the conventional breakable parts of instrumented capsules which may be broken during the process of loading/unloading the capsules in vertical irradiation holes of reactor pools. The instrumented capsule includes a capsule main body installed in the vertical irradiation hole. The capsule main body consists of a shell and several instruments, such as thermocouples, dosimeters, a vacuum control pipe, and heaters housed in the shell. The capsule main body also includes heat media, specimens set in the heat media, insulators interposed between adjacent heat media, upper and lower end plugs to seal the ends of the shell, an upper guide spring unit to vertically place the capsule main body in the irradiation hole, and a reinforced lower fixing unit assembled with the lower end plug. The instrumented capsule also includes a connecting means for connecting the capsule main body to a capsule control system installed outside the reactor pool.

摘要翻译： 用于在研究堆中进行材料辐照测试的仪表胶囊。 仪器化胶囊在与实际反应器的操作环境相似的测试环境下进行最佳材料辐照试验。 胶囊将研究反应堆中由强制循环型冷却剂流引起的流动振动的影响最小化，并且克服了在装载/卸载胶囊的过程中可能破裂的仪器化胶囊的常规易碎部分中遇到的问题 在反应池的垂直照射孔中。 仪表胶囊包括安装在垂直照射孔中的胶囊主体。 胶囊主体由壳体和几个仪器组成，例如热电偶，剂量计，真空控制管和容纳在壳体中的加热器。 胶囊主体还包括热介质，设置在热介质中的试样，置于相邻热介质之间的绝缘体，用于密封外壳端部的上下端塞;上导向弹簧单元，用于将胶囊主体垂直放置在 照射孔和与下端塞组装的加强的下固定单元。 仪表胶囊还包括用于将胶囊主体连接到安装在反应池外部的胶囊控制系统的连接装置。

公开(公告)号：US06644915B2

公开(公告)日：2003-11-11

申请号：US10094631

申请日：2002-03-12

申请人： Louis Mazuy

发明人： Louis Mazuy

IPC分类号： F04D2958

CPC分类号： G21C15/243 ,  G21Y2002/206 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/40

摘要： There is provided a nuclear power station primary pump of the type comprising a drive shaft for rotating a wheel, a heat exchanger, a thermal barrier cover comprising a peripheral skirt provided at its base with a circular end wall, and a diffuser comprising a peripheral skirt provided at its base with a rim. The circular end wall co-operates with the base of the heat exchanger to define a bottom chamber for cold water and includes a central bore provided with a succession of circumferential and superposed rings forming a lip seal of the labyrinth type, and a space is formed between the thermal barrier cover and the diffuser to maintain stagnant cooling fluid.

摘要翻译： 提供了一种核电站主泵，其类型包括用于转动车轮的驱动轴，热交换器，包括设置在其底部的具有圆形端壁的周边裙部的隔热罩，以及包括外围裙部的扩散器 在其底部设有边缘。 圆形端壁与热交换器的底部配合，以形成用于冷水的底部腔室，并且包括设置有一系列周向和重叠的环的中心孔，该环形和叠置环形成迷宫式的唇形密封件，并形成空间 在隔热罩和扩散器之间保持停滞的冷却液。

公开(公告)号：US06621885B2

公开(公告)日：2003-09-16

申请号：US10149619

申请日：2002-06-12

申请人： Christophe Brichet

发明人： Christophe Brichet

IPC分类号： G21C3352

CPC分类号： G21C3/3424 ,  G21Y2002/202 ,  G21Y2002/205 ,  G21Y2002/302 ,  G21Y2002/303 ,  G21Y2002/304 ,  G21Y2004/40 ,  G21Y2004/501 ,  Y02E30/40 ,  Y10T29/49902

摘要： The assembly apparatus comprises a frame for supporting the straps of the first set of straps in mutually parallel positions, clamping and engagement for clamping on each of the straps of a second set of straps in succession and for engaging them with the straps of the first set in position in the support frame, and at least one comb that is movable between a disengaged position and a position in which it engages each of the straps of the first set.

摘要翻译： 组装装置包括用于在相互平行的位置支撑第一组皮带的带的框架，用于相继夹紧第二组皮带的每个带的夹紧和接合装置，并且用于将它们与第一组带的绑带 设置在支撑框架中的适当位置，以及至少一个梳子，其可在分离位置与其与第一组的每个带束接合的位置之间移动。

公开(公告)号：US06557858B1

公开(公告)日：2003-05-06

申请号：US09762309

申请日：2001-06-06

申请人： Neil Anthony Carr ,  Trevor Norman Walker

发明人： Neil Anthony Carr ,  Trevor Norman Walker

IPC分类号： F16J1502

CPC分类号： F16J15/027 ,  G21F5/12 ,  G21Y2002/207 ,  G21Y2002/303 ,  G21Y2002/304 ,  G21Y2002/50 ,  G21Y2004/30

摘要： A double ring seal of unitary construction is made from a resilient deformable material. The ring seal comprises two coplanar sealing rings for use in sealing between two substantially planar surfaces, and means interconnecting the rings, such that an interspace volume is formed between the rings when the seal is in use.

摘要翻译： 一体式结构的双环密封由弹性可变形材料制成。 环形密封件包括用于在两个基本上平坦的表面之间进行密封的两个共面密封环，以及互连环的装置，使得当密封件在使用时在环之间形成间隙容积。

公开(公告)号：US06526116B1

公开(公告)日：2003-02-25

申请号：US08887017

申请日：1997-07-02

申请人： Quang M. Nguyen ,  Yu C. Lee ,  Edmund E. DeMario ,  Jeffrey J. Fodi ,  Darin L. Redinger ,  Levie D. Smith, III

发明人： Quang M. Nguyen ,  Yu C. Lee ,  Edmund E. DeMario ,  Jeffrey J. Fodi ,  Darin L. Redinger ,  Levie D. Smith, III

IPC分类号： G21C3322

CPC分类号： G21C3/352 ,  G21C3/322 ,  G21Y2002/302 ,  G21Y2002/303 ,  Y02E30/38

摘要： 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 remaining 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.

摘要翻译： 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。 剩余的电池支持核控制杆导管和仪表套管。 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着它们的高度被压印，凹槽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。