公开(公告)号：US06728329B2

公开(公告)日：2004-04-27

申请号：US10156798

申请日：2002-05-30

申请人： Atsuya Hirano ,  Satoshi Kanno ,  Makoto Irube ,  Hideki Kurosaki ,  Yasuhiro Aizawa ,  Takashi Fukumoto

发明人： Atsuya Hirano ,  Satoshi Kanno ,  Makoto Irube ,  Hideki Kurosaki ,  Yasuhiro Aizawa ,  Takashi Fukumoto

IPC分类号： G21C3326

CPC分类号： G21C3/344 ,  G21C3/326 ,  G21C3/328 ,  G21C3/356 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2004/30 ,  Y02E30/31 ,  Y02E30/38

摘要： A fuel assembly having a plurality of fuel rods arranged in a square lattice array. The fuel rods include a plurality of short-length fuel rods each having a fuel active length shorter than that of each of remaining ones of the fuel rods. At least one water rod is arranged in a region in which one or more of the fuel rods are arrangeable in the array, and a plurality of fuel spacers are provided at a plurality of positions in the axial direction for holding the plurality of fuel rods and the at least one water rod, with mutual radial intervals therebetween being kept immovable. The plurality of short-length fuel rods include at least one first short-length fuel rod arranged in the outermost peripheral region of the square lattice array. Each of the plurality of fuel spacers include a plurality of cylindrical members.

摘要翻译： 一种燃料组件，具有以正方形格子阵列排列的多个燃料棒。 燃料棒包括多个长度短的燃料棒，每个燃料棒的燃料活性长度短于燃料棒中的剩余燃料棒的燃料活性长度。 至少一个水杆布置在其中一个或多个燃料棒可排列成阵列的区域中，并且在轴向上的多个位置处设置多个燃料间隔件，用于保持多个燃料棒， 所述至少一个水杆在其间具有相互径向的间隔保持不动。 多个短长度燃料棒包括布置在正方格子阵列的最外围区域中的至少一个第一短路燃料棒。 多个燃料间隔件中的每一个包括多个圆柱形构件。

公开(公告)号：US06327324B2

公开(公告)日：2001-12-04

申请号：US09202494

申请日：1999-02-10

申请人： Olov Nylund

发明人： Olov Nylund

IPC分类号： G21C3326

CPC分类号： G21C3/328 ,  G21Y2002/20 ,  G21Y2004/30 ,  Y02E30/31 ,  Y02E30/38

摘要： A fuel assembly for a boiling water reactor comprising a plurality of fuel units (3a, 3b, 3c, 3d), stacked on top of each other, each one comprising a top tie plate (5), a bottom tie plate (6) and a plurality of fuel rods (4a, 4b, 4c) arranged between the top tie plate and the bottom tie plate. The fuel units are surrounded by a fuel channel (9) with a substantially square cross section. At least some of the fuel units comprise fuel rods with different diameters and different fuel quantities. The fuel rods are adapted such that fuel quantity and lattice space are optimized laterally and axially in the fuel assembly.

摘要翻译： 一种用于沸水反应堆的燃料组件，包括堆叠在彼此顶部的多个燃料单元（3a，3b，3c，3d），每个燃料单元包括顶板（5），底板（6）和 多个燃料棒（4a，4b，4c），布置在顶部连接板和底部连接板之间。 燃料单元被具有基本正方形横截面的燃料通道（9）围绕。 至少一些燃料单元包括具有不同直径和不同燃料量的燃料棒。 燃料棒适于使得燃料量和格子空间在燃料组件中被横向和轴向优化。

公开(公告)号：US06301321B1

公开(公告)日：2001-10-09

申请号：US09354068

申请日：1999-07-14

申请人： Yousef M. Farawila

发明人： Yousef M. Farawila

IPC分类号： G21C3326

CPC分类号： G21C3/322 ,  G21Y2002/201 ,  G21Y2002/207 ,  G21Y2004/30 ,  Y02E30/31 ,  Y02E30/38

摘要： A new design concept of boiling water reactor fuel assembly water channels is disclosed. The new design utilizes parallel flow paths guided inside an outer conduit without reversing flow. The different flow paths discharge water into the coolant stream, which is the objective of this invention, and resulting in improvements in thermal efficiency and stability of the fuel assembly. The thus diverted flow paths discharge water evenly into the coolant stream, which is the objective of this invention, with the result of improving the thermal efficiency and stability of the fuel assembly.

摘要翻译： 公开了沸水反应堆燃料组合水通道的新设计概念。 新设计利用在外导管内引导的平行流动路径，而不会反向流动。 不同的流动路径将水排放到冷却剂流中，这是本发明的目的，并且导致燃料组件的热效率和稳定性的改善。 这样转向的流路将水均匀地排放到冷却剂流中，这是本发明的目的，其结果是提高燃料组件的热效率和稳定性。

公开(公告)号：US06400788B1

公开(公告)日：2002-06-04

申请号：US09245899

申请日：1999-02-08

申请人： Atsuya Hirano ,  Satoshi Kanno ,  Makoto Irube ,  Hideki Kurosaki ,  Yasuhiro Aizawa ,  Takashi Fukumoto

发明人： Atsuya Hirano ,  Satoshi Kanno ,  Makoto Irube ,  Hideki Kurosaki ,  Yasuhiro Aizawa ,  Takashi Fukumoto

IPC分类号： G21C3326

CPC分类号： G21C3/344 ,  G21C3/326 ,  G21C3/328 ,  G21C3/356 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2004/30 ,  Y02E30/31 ,  Y02E30/38

摘要： A fuel assembly, particularly, a fuel assembly including short-length fuel rods and fuel spacers, is used for a boiling water reactor, which is capable of sufficiently reducing the pressure loss of at least one of the fuel spacers positioned above the upper ends of the short-length fuel rods, irrespective of the arrangement of the short-length fuel rods, and also ensuring the structural strength of the fuel spacer. The fuel assembly includes fuel rods located in a square lattice array, two water rods arranged in a region in which seven of the fuel rods are arrangeable, two fuel spacers for holding the fuel rods and the water rods with mutual intervals kept immovable. Each of the fuel spacers includes cells which are connected to each other and in which the fuel rods are to be inserted, respectively, and a band for surrounding the outermost peripheries of the cells. The short-length fuel rods include four first short-length fuel rods arranged in the outermost peripheral region of the square lattice array. One of the fuel spacers, positioned upward from the upper ends of the short-length fuel rods, is configured such that the cells located at lattice positions associated with the first short-length fuel rods are removed and instead supporting members, each being adapted to connect two of the cells adjacently located on both sides of each of the lattice positions in the outermost peripheral region to the band, are provided at the lattice positions.

摘要翻译： 一种燃料组件，特别是包括短长度燃料棒和燃料间隔件的燃料组件，用于沸水反应堆，其能够充分降低位于上游侧上方的燃料间隔物中至少一个的压力损失 短长度的燃料棒，不管短长度的燃料棒的布置，以及确保燃料间隔件的结构强度。 燃料组件包括位于正方形格子阵列中的燃料棒，布置在其中七个燃料棒可布置的区域中的两个水棒，用于保持燃料棒和水杆的相互间隔保持不动的两个燃料间隔件。 每个燃料间隔件包括彼此连接并且其中分别插入燃料棒的单元和用于围绕单元的最外周的带。 短长度燃料棒包括布置在正方形格子阵列的最外围区域中的四个第一短长度燃料棒。 燃料间隔件中的一个位于距短燃料棒的上端上方的位置，使得位于与第一短长度燃料棒相关联的格子位置处的电池被去除，并且代替支撑构件 将位于最外围区域中的每个格子位置的两侧相邻的两个单元连接到该格子位置。

公开(公告)号：US06310931B1

公开(公告)日：2001-10-30

申请号：US09367827

申请日：1999-09-27

申请人： Tommy Gustafsson ,  Anders Wallander

发明人： Tommy Gustafsson ,  Anders Wallander

IPC分类号： G21C3326

CPC分类号： G21C3/331 ,  G21C3/12 ,  G21C3/3305 ,  G21C5/06 ,  Y02E30/40

摘要： The present invention relates to a fuel assembly (1) and a method therefor. The fuel assembly is intended for a light-water cooled nuclear reactor and comprises a first and a second locking member (9a, 9b, 10), a plurality of elongated elements (3, 3a) wherein each of the lower ends of the elongated elements is provided with an end plug (3b). The end plug (3b) is arranged guided or locked in an end plate (6) which comprises at least two adjacently disposed plug holes (6b) for receiving one end plug (3b) each. The first locking member (9a, 9b) is made in an end plug (3b) and has a concave shape and the second locking member (10) is arranged slidable in a locking hole (6c) which is adapted to extend between the two adjacently disposed plug holes (6b) and opening out into these. The second locking member (10) is made with a length exceeding the length of the locking hole (6c) and has end surfaces with shapes intended for cooperation with the concave surface of the first locking member (9a, 9b).

摘要翻译： 燃料组件（1）及其方法技术领域本发明涉及一种燃料组件（1）及其方法。 燃料组件用于轻水冷却的核反应堆，包括第一和第二锁定构件（9a，9b，10），多个细长元件（3,3a），其中细长元件的每个下端 设置有端塞（3b）。 端塞（3b）被引导或锁定在端板（6）中，端板（6）包括至少两个相邻布置的插头孔（6b），用于分别接收一个端塞（3b）。 第一锁定构件（9a，9b）制成端塞（3b）并且具有凹形形状，并且第二锁定构件（10）可布置成可在两个相邻地延伸的锁定孔（6c）中滑动 设置插头孔（6b）并向其中打开。 第二锁定构件（10）的长度超过锁定孔（6c）的长度，并且具有用于与第一锁定构件（9a，9b）的凹面配合的形状的端面。

公开(公告)号：US06301320B1

公开(公告)日：2001-10-09

申请号：US09269012

申请日：1999-03-17

申请人： Gwilym Michael Thomas ,  Kevin Wynn Hesketh

发明人： Gwilym Michael Thomas ,  Kevin Wynn Hesketh

IPC分类号： G21C3326

CPC分类号： G21C3/326 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2004/30 ,  Y02E30/38

摘要： Nuclear fuel assembly configurations are provided for mixed oxide fuels. Neutron poisons are provided within the MOX of certain fuel rods in the fuel assembly, those fuel rods being preferentially grouped towards the periphery of the fuel assembly. In this way, optimized reduction of reactivity is provided during the initial part of the fuel cycle but the neutron poison is burnt out so as not to interfere with the reactivity during subsequent parts of the cycle.

摘要翻译： 为混合氧化物燃料提供核燃料组件构造。 在燃料组件中的某些燃料棒的MOX内设置有中子毒物，这些燃料棒优选地朝向燃料组件的周边分组。 以这种方式，在燃料循环的初始阶段提供了反应性的优化降低，但是中子毒物被烧掉，从而不会干扰循环的后续部分的反应性。