公开(公告)号：US07031424B2

公开(公告)日：2006-04-18

申请号：US11152371

申请日：2005-06-15

申请人： Tarou Takagi ,  Hiroshi Kamimura ,  Sadao Uchikawa

发明人： Tarou Takagi ,  Hiroshi Kamimura ,  Sadao Uchikawa

IPC分类号： G01N23/00

CPC分类号： G06K9/3216 ,  G01N23/046 ,  G01N2223/419 ,  G06K2009/3225 ,  G06K2209/05 ,  G06T7/73 ,  G06T2207/30004

摘要： A CT imaging method and apparatus in which an object is to be imaged by the CT apparatus using an X-ray or radiation, and a tomographic image of the object is obtained, wherein the object includes a reference portion. The processing the tomographic image is processed and a relative positional relation between a reference coordinate system of the object and a coordinate system of the CT apparatus is obtained. The object is imaged by the CT apparatus, and based on the relative positional relation, a tomographic image of a desired position of the object is obtained.

摘要翻译： 一种CT成像方法和装置，其中通过CT装置使用X射线或辐射对物体进行成像，并获得该物体的断层图像，其中该物体包括一参考部分。 处理断层图像，并且获得对象的参考坐标系和CT装置的坐标系之间的相对位置关系。 该物体由CT装置成像，并且基于相对位置关系，获得物体的期望位置的断层图像。

公开(公告)号：US06909768B2

公开(公告)日：2005-06-21

申请号：US10622648

申请日：2003-07-21

申请人： Tarou Takagi ,  Hiroshi Kamimura ,  Sadao Uchikawa

发明人： Tarou Takagi ,  Hiroshi Kamimura ,  Sadao Uchikawa

IPC分类号： G01N23/04 ,  G06Q50/00 ,  G06Q50/10 ,  G06T7/00 ,  G01N23/00

CPC分类号： G06K9/3216 ,  G01N23/046 ,  G01N2223/419 ,  G06K2009/3225 ,  G06K2209/05 ,  G06T7/73 ,  G06T2207/30004

摘要： A CT imaging method determines geometric features (information representing geometries) of contact surfaces between markers and an object from tomographic images obtained by imaging the object attached with the markers on its reference surfaces using a CT apparatus, determines from the geometric features a positional relation between a reference coordinate system of the object and a coordinate system of the CT apparatus, and, based on the positional relation, produces tomographic images (bit-map data) of a desired portion of the object.

摘要翻译： CT成像方法使用CT装置确定通过使用CT装置对附着有标记的物体成像的断层图像来确定标记和物体之间的接触表面的几何特征（表示几何形状的信息），从几何特征确定位置关系 物体的参考坐标系和CT装置的坐标系，并且基于位置关系，产生物体的期望部分的断层图像（位图数据）。

公开(公告)号：US5167911A

公开(公告)日：1992-12-01

申请号：US669376

申请日：1991-03-14

申请人： Koji Fujimura ,  Yasunori Bessho ,  Yoshihiko Ishii ,  Sadao Uchikawa ,  Yuichiro Yoshimoto ,  Junjiro Nakajima

发明人： Koji Fujimura ,  Yasunori Bessho ,  Yoshihiko Ishii ,  Sadao Uchikawa ,  Yuichiro Yoshimoto ,  Junjiro Nakajima

IPC分类号： G21C3/33 ,  G21C3/322 ,  G21C7/27 ,  G21C15/02

CPC分类号： G21C15/02 ,  G21C3/322 ,  Y02E30/31 ,  Y02E30/38

摘要： A fuel assembly comprises a plurality of fuel rods which contain nuclear fuel material inside, a lower tie plate which holds the lower end of the fuel rods and has a path inside to lead coolant between the fuel rods, and a channel box which encloses a bundle of the fuel rods. An orifice, in which a plurality of round rods are arranged to cross the coolant flow path, is installed in a through hole at a side wall of the lower tie plate by connecting to the side wall. Orifice coefficient of the orifice becomes large at small flow rate of coolant which supplied to the fuel assembly, and becomes small at large flow rate of coolant. By using the fuel assembly described above, void fraction in a gap region between fuel assemblies can be altered during beginning and end of an operation cycle of the nuclear reactor.

摘要翻译： 燃料组件包括在其内部容纳核燃料材料的多个燃料棒，保持燃料棒的下端的下连接板，并且具有内部的路径，以在燃料棒之间引导冷却剂，以及包围束的通道箱 的燃料棒。 其中多个圆棒布置成穿过冷却剂流动路径的孔口通过连接到侧壁而安装在下连接板的侧壁的通孔中。 在供给到燃料组件的冷却剂的小流量下，孔口的孔数变大，在冷却剂的大流量下变小。 通过使用上述燃料组件，可以在核反应堆的操作循环的开始和结束期间改变燃料组件之间的间隙区域中的空隙率。

公开(公告)号：US5008070A

公开(公告)日：1991-04-16

申请号：US268595

申请日：1988-11-07

申请人： Motoo Aoyama ,  Junichi Koyama ,  Sadao Uchikawa ,  Yasunori Bessho ,  Michihiro Ozawa ,  Mitsunari Nakamura ,  Akinobu Nakajima ,  Hiromi Maruyama

发明人： Motoo Aoyama ,  Junichi Koyama ,  Sadao Uchikawa ,  Yasunori Bessho ,  Michihiro Ozawa ,  Mitsunari Nakamura ,  Akinobu Nakajima ,  Hiromi Maruyama

IPC分类号： G21C3/326

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

摘要： A fuel assembly has a plurality of first fuel rods each of which contains nuclear fuel material but does not contain burnable poison, and a plurality of second fuel rods each of which includes nuclear fuel material and burnable poison. The amount of burnable poison in a lower region of the fuel assembly is smaller than that in an upper region thereof. When each of the second fuel rods is divided into an upper region and a lower region, a region of the divided regions in the second fuel rods containing a maximum burnable poison concentration Gmax and a region of the divided regions in the second fuel rods containing a minimum burnable poison concentration Gmin are located in the lower region of the fuel assembly. The burnable poison concentration of the upper region of each second fuel rod is between Gmax and Gmin. The fuel assembly may moderate a maximum linear heat rating with an increased spectral shift effect.

公开(公告)号：US4652427A

公开(公告)日：1987-03-24

申请号：US597031

申请日：1984-04-05

申请人： Sadao Uchikawa ,  Motoo Aoyama

发明人： Sadao Uchikawa ,  Motoo Aoyama

IPC分类号： G21C7/04 ,  G21C3/326 ,  G21C3/328 ,  G21C3/32

CPC分类号： G21C3/328 ,  G21Y2002/201 ,  G21Y2002/301 ,  G21Y2004/30 ,  Y02E30/38 ,  Y10S376/906

摘要： The invention provides a fuel assembly comprising a plurality of fuel rods containing a fissionable material and a plurality of moderator rods filled with a burnable poison and a metal hydride as a solid moderator material. All of the burnable poison in the fuel assembly is filled in the moderator rods, and number of the moderator rods is at least 4 and not more than 15% of total number of the fuel rods and the moderator rods.

摘要翻译： 本发明提供一种燃料组件，其包括多个含有可裂变材料的燃料棒和多个充满可燃毒物的缓和杆和作为固体缓和剂材料的金属氢化物。 燃料组件中的所有可燃毒物填充在减速棒中，减速棒的数量为燃料棒和调节杆总数的至少4％且不超过15％。

公开(公告)号：US4368171A

公开(公告)日：1983-01-11

申请号：US210168

申请日：1980-11-25

申请人： Hiromi Maruyama ,  Masayuki Izumi ,  Sadao Uchikawa ,  Renzo Takeda

发明人： Hiromi Maruyama ,  Masayuki Izumi ,  Sadao Uchikawa ,  Renzo Takeda

IPC分类号： G21C7/00 ,  G21C7/08

CPC分类号： G21C7/00 ,  G21Y2002/201 ,  G21Y2004/40 ,  Y02E30/39

摘要： A method of operating a nuclear reactor adapted to use cross-shaped control rods. The control rods are grouped into a plurality of groups having a first group consisting of a control rod located at the center of the core, a second group consisting of 8 control rods surrounding the control rod of the first group, a third group consisting of control rods located adjacent to and outside of the control rods of the second group, and other groups determined successively in the same manner as in the third group. During the operation period other than the period in which the number of the control rods to be inserted for realizing the critical condition of said nuclear reactor is less than 6, the nuclear reactor is operated with control rod patterns in which the inserted control rods are selected from control rods of alternate or every other groups of said groups so as to include at least a pair of control rods which are located in a similar manner to that of the KNIGHT's movement on a chess board.

摘要翻译： 一种操作适于使用十字形控制棒的核反应堆的方法。 控制杆被分组成多个组，其具有第一组，第一组由位于芯的中心的控制棒组成，第二组由围绕第一组的控制棒的8个控制棒组成，第三组包括控制 位于第二组的控制棒附近和外侧的杆，以及与第三组相同的方式连续确定的其他组。 在操作期间，为了实现上述核反应堆的临界状态而插入的控制杆的数量少于6的期间，核反应堆以选择插入的控制棒的控制杆模式进行操作 从所述组的交替或其他组的控制棒中，至少包括一对控制棒，其以类似于在棋盘上的KNIGHT的运动的方式定位。

公开(公告)号：US4248667A

公开(公告)日：1981-02-03

申请号：US936922

申请日：1978-08-25

申请人： Sadao Uchikawa ,  Masayuki Izumi ,  Hiromi Maruyama ,  Renzo Takeda

发明人： Sadao Uchikawa ,  Masayuki Izumi ,  Hiromi Maruyama ,  Renzo Takeda

IPC分类号： G21C7/00 ,  G21C7/08

CPC分类号： G21C7/00 ,  G21C7/08 ,  G21Y2002/201 ,  G21Y2004/10 ,  G21Y2004/40 ,  Y02E30/39

摘要： A method of operating a nuclear reactor wherein the reactor is operated for more than 50% of its operating period with the control rod patterns in which, in the central region of the reactor core accounting for at least 50% thereof, the control rods inserted from the bottom of the reactor core are at the depths of between 16/24 and 21/24 of the height of the reactor core with eight control rods surrounding each of said inserted control rods being fully withdrawn.

摘要翻译： 一种操作核反应堆的方法，其中反应器的操作时间超过其操作周期的50％，其中控制杆模式在反应堆芯的中心区域占其至少50％，控制棒从 反应堆芯的底部处于反应堆堆芯的高度的16/24和21/24之间的深度，八个控制杆围绕着每个插入的控制杆被完全拉出。

公开(公告)号：US4244784A

公开(公告)日：1981-01-13

申请号：US835964

申请日：1977-09-23

申请人： Renzo Takeda ,  Kunitoshi Kurihara ,  Masaaki Yamamoto ,  Sadao Uchikawa ,  Michiro Yokomi ,  Junichi Yamashita ,  Takanori Shimoshige

发明人： Renzo Takeda ,  Kunitoshi Kurihara ,  Masaaki Yamamoto ,  Sadao Uchikawa ,  Michiro Yokomi ,  Junichi Yamashita ,  Takanori Shimoshige

IPC分类号： G21C7/00 ,  G21C1/08 ,  G21C3/328 ,  G21C5/12 ,  G21C15/02

CPC分类号： G21C1/084 ,  G21C3/328 ,  Y02E30/31 ,  Y02E30/38

摘要： A construction of boiling water reactor core having a plurality of fuel assemblies. Some of fuel assemblies have an infinite multiplication factor which is larger at their upper regions than at their lower portions, so that the effective multiplication factor of the reactor core is larger at the upper portion than at the lower portion of the reactor core under an equal condition. Consequently, a relatively flat axial power distribution is established even under an uneven axial void distribution.

摘要翻译： 具有多个燃料组件的沸水反应堆堆芯的结构。 一些燃料组件具有无限倍增因子，在其上部区域比在其下部较大，因此反应堆堆芯的有效倍增系数在上部比在反应堆芯的下部较大 条件。 因此，即使在不均匀的轴向空隙分布下也建立了相对平坦的轴向功率分布。

公开(公告)号：US4229258A

公开(公告)日：1980-10-21

申请号：US835962

申请日：1977-09-23

申请人： Renzo Takeda ,  Sadao Uchikawa ,  Kunitoshi Kurihara ,  Masaaki Yamamoto ,  Michiro Yokomi ,  Junichi Yamashita ,  Jun Takamatsu

发明人： Renzo Takeda ,  Sadao Uchikawa ,  Kunitoshi Kurihara ,  Masaaki Yamamoto ,  Michiro Yokomi ,  Junichi Yamashita ,  Jun Takamatsu

IPC分类号： G21C7/00 ,  G21C3/32 ,  G21C3/328 ,  G21C5/12 ,  G21C7/04 ,  G21C3/02

CPC分类号： G21C3/328 ,  G21C7/04 ,  G21C3/32 ,  G21Y2002/201 ,  G21Y2004/10 ,  G21Y2004/40 ,  Y02E30/31 ,  Y02E30/38 ,  Y02E30/39

摘要： A fuel assembly suitable for use in boiling water reactor. The fuel assembly has a specific pattern of distribution of enrichment, so that the upper region of the assembly has a larger infinite multiplication factor than that of the lower region. In an example, the distribution of enrichment is such that the upper region has a mean enrichment larger than that of the lower region, while, in another example, the mean enrichment is maintained constant over the length of the assembly but the difference of enrichments between the central and peripheral portions of a plane normal to the axis of the assembly is made smaller at the upper region than at the lower region.

摘要翻译： 适用于沸水反应堆的燃料组件。 燃料组件具有特定的浓缩分布模式，使得组件的上部区域具有比下部区域更大的无限倍增系数。 在一个实例中，富集的分布使得上部区域的平均浓度大于下部区域的平均富集，而在另一个示例中，平均富集在组件的长度上保持恒定，但是浓度的差异 垂直于组件的轴线的平面的中心和周边部分在上部区域比在下部区域处更小。

公开(公告)号：US4851181A

公开(公告)日：1989-07-25

申请号：US123542

申请日：1987-11-20

申请人： Renzo Takeda ,  Kanji Kato ,  Tadahiro Ohnishi ,  Sadao Uchikawa ,  Hiromi Maruyama ,  Motoo Aoyama ,  Kikuo Umegaki ,  Yasunori Bessho ,  Motomasa Fuse ,  Michiro Yokomi

发明人： Renzo Takeda ,  Kanji Kato ,  Tadahiro Ohnishi ,  Sadao Uchikawa ,  Hiromi Maruyama ,  Motoo Aoyama ,  Kikuo Umegaki ,  Yasunori Bessho ,  Motomasa Fuse ,  Michiro Yokomi

IPC分类号： G21C5/12 ,  G21C1/08 ,  G21C3/328 ,  G21C5/00 ,  G21C5/18

CPC分类号： G21C5/18 ,  Y02E30/40

摘要： In a light water moderation type nuclear reactor with the once-through method, the reactor core is divided into a central area and a peripheral area by a partition member, a first fuel assembly is arranged in the central area (high conversion area) and a second fuel assembly is arranged in the peripheral area. The ratio (r.sub.H/U) of the number of hydrogen atoms to that of uranium atoms in the central area is smaller than that of the ratio in the peripheral area and the second fuel assembly in the peripheral area is formed of fuel rods of the first fuel assembly having been previously burned in the central area and moved into the peripheral area. The plutonium production increases and uranium consumption is reduced during the first half of the lifetime of the fuel rods in the high conversion area with the take-up burn up increasing during the second half of the lifetime of the fuel rods in the burner area.

摘要翻译： 在具有一次通过方法的轻水调节型核反应堆中，反应堆堆芯通过分隔构件分成中心区域和周边区域，第一燃料组件布置在中心区域（高转化区域）和 第二燃料组件布置在周边区域中。 中心区域的氢原子数与铀原子数的比值（rH / U）小于外围区域的比例，并且周边区域中的第二燃料组件的比率（rH / U）由第一 燃料组件先前已经在中心区域燃烧并移动到周边区域。 在高转化率区域的燃料棒的寿命的前半期，钚的生产增加，铀的消耗减少，在燃烧器区域的燃料棒的寿命的后半期，吸收燃烧增加。