公开(公告)号：US06236698B1

公开(公告)日：2001-05-22

申请号：US09271350

申请日：1999-03-17

申请人： Koji Hirukawa ,  Shungo Sakurai ,  Takafumi Naka

发明人： Koji Hirukawa ,  Shungo Sakurai ,  Takafumi Naka

IPC分类号： G21C1700

CPC分类号： G21C17/108

摘要： A nuclear reactor instrumentation system including a plurality of in core nuclear instrumentation assemblies arranged in a gap between a number of fuel assemblies charged in a reactor core. The income nuclear instrumentation assemblies each include a fixed type neutron detector assembly having a plurality of fixed type neutron detectors dispersively arranged in a core axial direction and a fixed type gamma thermometer assembly having a plurality of fixed type gamma ray heat detectors arranged at least in a same core axial direction as the fixed type neutron detectors. A power range detector signal processing device is operatively connected to the fixed type neutron detector assemblies through signal cables. A gamma thermometer signal processing device is operatively connected to the fixed type gamma thermometer assembly of the in core nuclear instrumentation assembly through a signal cable.

摘要翻译： 一种核反应堆仪表系统，包括多个核心核仪表组件，其布置在充电在反应堆堆芯中的多个燃料组件之间的间隙中。 收纳核仪表组件各自包括固定型中子探测器组件，其具有分散布置在芯轴方向上的多个固定型中子探测器组件和固定型伽马温度计组件，该组件具有多个固定型伽马射线热检测器，其至少布置在 与固定式中子探测器相同的芯轴方向。 功率范围检测器信号处理装置通过信号电缆可操作地连接到固定型中子探测器组件。 伽马温度计信号处理装置通过信号电缆可操作地连接到核心核仪表组件的固定型γ温度计组件。

公开(公告)号：US5009840A

公开(公告)日：1991-04-23

申请号：US299238

申请日：1989-01-19

申请人： Makoto Ueda ,  Yoshihira Ando ,  Shungo Sakurai ,  Ritsuo Yoshioka

发明人： Makoto Ueda ,  Yoshihira Ando ,  Shungo Sakurai ,  Ritsuo Yoshioka

IPC分类号： G21C3/322 ,  G21C3/326 ,  G21C7/04

CPC分类号： G21C3/326 ,  G21C3/322 ,  G21C7/04 ,  G21Y2002/201 ,  G21Y2004/10 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/38 ,  Y02E30/39

摘要： A fuel assembly for a nuclear reactor comprising a number of fuel rods arranged in a regular fashion in a channel box which is surrounded by water gap in a reactor core. Some of fuel rods disposed at portions facing the water gap through which no control blade is inserted or drawn out, have atomic number densities of fissionable material contained in the fuel rods. The atomic number density of each of these fuel rods is made smaller than that of the fuel rod disposed in the fuel assembly at portions other than the portions referred to above.

摘要翻译： 一种用于核反应堆的燃料组件，包括以规则方式布置在由反应堆芯中的水隙包围的通道箱中的多个燃料棒。 设置在没有控制叶片被插入或拉出的面向水隙的部分的一些燃料棒具有包含在燃料棒中的可裂变材料的原子数密度。 这些燃料棒中的每一个的原子序数密度比在上述部分以外的部分设置在燃料组件中的燃料棒的原子数密度小。

公开(公告)号：US5068082A

公开(公告)日：1991-11-26

申请号：US219346

申请日：1988-07-15

申请人： Makoto Ueda ,  Koichi Sakurada ,  Shungo Sakurai ,  Ritsuo Yoshioka ,  Shunsuke Ogiya ,  Mamoru Nagano

发明人： Makoto Ueda ,  Koichi Sakurada ,  Shungo Sakurai ,  Ritsuo Yoshioka ,  Shunsuke Ogiya ,  Mamoru Nagano

IPC分类号： G21C3/18 ,  G21C3/322 ,  G21C3/326 ,  G21C17/10

CPC分类号： G21C17/10 ,  G21C3/18 ,  G21C3/322 ,  G21C3/326 ,  Y02E30/38

摘要： A fuel assembly for a nuclear reactor includes a number of fuel rods filled with a fuel material. A plurality of fuel rods have a partial effective fuel area filled with a fuel material and has a portion in which enrichment of a fissile nuclide is significantly reduced or the fissile nuclide does not exist at all on an axial level including a reactor shut-down zone at which subcriticality becomes small during a reactor operation period. The other fuel rods are filled with the fuel material throughout the entire axial length thereof. The first mentioned fuel rod may be provided with a partially interposed zone or may be constructed by a fuel rod having a length shorter than that of the other fuel rod. The tube means may be arranged in the fuel assembly so as to pass the moderator therethrough.

摘要翻译： 用于核反应堆的燃料组件包括多个充满燃料的燃料棒。 多个燃料棒具有填充有燃料的部分有效的燃料区域，并且具有显着减少易裂变核素的富集的部分或者在包括反应堆关闭区域的轴向上完全不存在易裂变核素 在反应堆运行期间亚临界度变小。 其他燃料棒在其整个轴向长度处填充有燃料材料。 第一个提到的燃料棒可以设置有部分插入的区域，或者可以由具有比其他燃料棒的长度短的燃料棒构成。 管装置可以布置在燃料组件中以便使调节剂通过。

公开(公告)号：US06477219B2

公开(公告)日：2002-11-05

申请号：US09810566

申请日：2001-03-19

申请人： Koji Hirukawa ,  Shungo Sakurai ,  Takafumi Naka

发明人： Koji Hirukawa ,  Shungo Sakurai ,  Takafumi Naka

IPC分类号： G21C1700

CPC分类号： G21C17/108

摘要： A nuclear reactor instrumentation system including a plurality of incore nuclear instrumentation assemblies arranged in a gap between a number of fuel assemblies charged in a reactor core. The incore nuclear instrumentation assemblies each include a fixed type neutron detector having a plurality of fixed type neutron detectors dispersively arranged in a core axial direction and a fixed type gamma thermometer assembly having a plurality of fixed type gamma ray heat detectors arranged at least in a same core axial direction as the fixed type neutron detectors. A power range detector signal processing device operatively connected to the fixed type neutron detector assemblies through signal cables. A gamma thermometer signal processing device is operatively connected to the fixed type gamma thermometer assembly of the incore nuclear instrumentation assembly through a signal cable.

摘要翻译： 一种核反应堆仪表系统，包括多个装在核反应堆堆芯中的多个燃料组件之间的间隙中的多个核仪表组件。 核武器装置组件包括固定型中子探测器，其具有分散布置在芯轴方向上的多个固定型中子探测器和固定型伽马温度计组件，其具有至少排列在其上的多个固定型γ射线热探测器 核心轴向作为固定式中子探测器。 功率范围检测器信号处理装置，通过信号电缆可操作地连接到固定型中子探测器组件。 伽马温度计信号处理装置通过信号电缆可操作地连接到腋核仪器组件的固定型γ温度计组件。