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公开(公告)号：US5145635A
公开(公告)日：1992-09-08
申请号：US669378
申请日：1991-03-14
申请人： Kazuya Ishii , Motoo Aoyama , Yoshihiko Ishii , Sadao Uchikawa , Renzo Takeda , Osamu Yokomizo
发明人： Kazuya Ishii , Motoo Aoyama , Yoshihiko Ishii , Sadao Uchikawa , Renzo Takeda , Osamu Yokomizo
CPC分类号： G21C3/328 , G21Y2002/201 , G21Y2002/207 , G21Y2004/10 , G21Y2004/30 , Y02E30/38
摘要： A high conversion nuclear reactor core has fuel assemblies made up from large numbers of axially-extending uranium-plutonium mixed oxide fuel rods. The fuel rods are densely packed so as to give a high conversion ratio of fissile substances, preferably approaching unity. The average plutonium enrichment in the assemblies is higher in their bottom, upstream halves, than in their top downstream halves. This has the effect of reducing a potentially dangerously high void coefficient in the core.
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公开(公告)号：US4876062A
公开(公告)日：1989-10-24
申请号：US172418
申请日：1988-03-24
申请人： Motoo Aoyama , Yasunori Bessho , Sadao Uchikawa , Renzo Takeda , Yoshihiko Ishii
发明人： Motoo Aoyama , Yasunori Bessho , Sadao Uchikawa , Renzo Takeda , Yoshihiko Ishii
CPC分类号： G21C3/322 , G21C2003/3225 , G21Y2002/201 , G21Y2004/30 , Y02E30/38
摘要： A fuel assembly of the present invention comprises a plurality of fuel rods which are held by an upper tie plate and lower tie plate at the ends thereof and a moderating rod which is arranged between the fuel rods and held by the lower tie plate at its lower end. The fuel rods are arranged in a lattice form having 9 rows and 9 columns, and the moderating rod contains a passage for a coolant and has a cruciate cross-sectional form. The ratio A.sub.M /A.sub.C of the area A.sub.M of a moderator region in the moderating rod in the cross-sectional plane in which the moderator is present to the area A.sub.C of the coolant passages in said fuel assembly is within the range of 0.07 to 0.11, and the area A.sub.M is 75% or more of the total area of the fuel lattice units in which none of the fuel rods is arranged, but the moderating rod is arranged.
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公开(公告)号：US4789520A
公开(公告)日：1988-12-06
申请号：US77513
申请日：1987-07-24
申请人： Yuichi Morimoto , Hiromi Maruyama , Motoo Aoyama , Atsushi Zukeran , Yasunori Bessho , Tomoyuki Matsumoto , Yoshihiko Ishii , Kouji Fujimura , Sadao Uchikawa
发明人： Yuichi Morimoto , Hiromi Maruyama , Motoo Aoyama , Atsushi Zukeran , Yasunori Bessho , Tomoyuki Matsumoto , Yoshihiko Ishii , Kouji Fujimura , Sadao Uchikawa
CPC分类号： G21C3/328 , G21Y2002/20 , G21Y2004/10 , G21Y2004/30 , Y02E30/38
摘要： A fuel assembly is composed of first fuel rods containing nuclear fuel material and burnable poison material and second fuel rods containing nuclear fuel material but no burnable poison material. The fuel assembly is charged in a high conversion area of a boiling water type nuclear reactor having a reactor core having the high conversion area and a burner area surrounding the high conversion area. A ratio V.sub.C /V.sub.F is not greater than 1.5 in the fuel assembly where V.sub.C is the volume occupied by coolant flow paths and V.sub.F is the volume occupied by the nuclear fuel material per unit length in an axial direction of the fuel assembly. In addition, the burnable poison material is composed of neutron absorption nuclides having at least one resonant energy in a neutron energy region of one electron volt or less.
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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
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。
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公开(公告)号：US20110200155A1
公开(公告)日：2011-08-18
申请号：US13005928
申请日：2011-01-13
申请人： Atsushi Fushimi , Setsuo Arita , Yoshihiko Ishii , Tomohiko Ikegawa , Shin Hasegawa , Kazuhiko Ishii
发明人： Atsushi Fushimi , Setsuo Arita , Yoshihiko Ishii , Tomohiko Ikegawa , Shin Hasegawa , Kazuhiko Ishii
摘要： In order to stably control a nuclear reactor in a short time, so as not to enter an unstable region that is determined by the relationship between the reactor pressure, the reactor power and the subcooling of the core inlet coolant at start-up time, the nuclear reactor system comprises: an power control apparatus for generating a control rod operation signal for operating a control rod, based on the reactor water temperature change rate; a feed water control apparatus for generating a feed water flow rate signal and a discharge water flow rate signals based on the reactor water level signal; and a process computer for performing overall control of the power control apparatus and the feed water control apparatus, wherein the feed water control apparatus has the reactor water temperature change rate setting section for adjusting the reactor water temperature change rate set value based on the variation of the reactor water level signal.
摘要翻译： 为了在短时间内稳定地控制核反应堆，为了不进入由反应堆压力，反应堆功率和启动时的核心入口冷却剂的过冷度之间的关系确定的不稳定区域， 核反应堆系统包括：功率控制装置，用于基于反应堆水温度变化率产生用于操作控制棒的控制棒操作信号; 用于产生基于反应堆水位信号的给水流量信号和排放水流量信号的给水控制装置; 以及用于执行动力控制装置和给水控制装置的整体控制的处理计算机，其中，给水控制装置具有反应堆水温变化率设定部，其用于基于变化而调整反应堆水温变化率设定值 反应堆水位信号。
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6.发明授权
公开(公告)号：US4941370A
公开(公告)日：1990-07-17
申请号：US216569
申请日：1988-06-23
申请人： Yoshihiko Ishii
发明人： Yoshihiko Ishii
CPC分类号： F16H61/065 , F16H2061/0485 , Y10T477/6388
摘要： A sequence valve is interposed between the manual valve and the reverse clutch and arranged to control the communication therebetween. The valve is responsive to the pressure which develops in the low and reverse brake and establishes communication between the manual valve and the reverse clutch when the pressure prevailing in the low and reverse brake is such as to indicate that the brake is engaged to a predetermined degree.
摘要翻译： 顺序阀介于手动阀和倒档离合器之间，并布置成控制它们之间的连通。 当低速和反向制动中的压力等于表示制动器接合到预定的程度时，阀门响应于低速和反向制动器中产生的压力，并建立手动阀和倒档离合器之间的连通 。
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公开(公告)号：US20100272223A1
公开(公告)日：2010-10-28
申请号：US11657456
申请日：2007-01-25
申请人： Atsushi Fushimi , Setsuo Arita , Yoshihiko Ishii , Tomohiko Ikegawa , Shin Hasegawa , Kazuhiko Ishii
发明人： Atsushi Fushimi , Setsuo Arita , Yoshihiko Ishii , Tomohiko Ikegawa , Shin Hasegawa , Kazuhiko Ishii
摘要： In order to stably control a nuclear reactor in a short time, so as not to enter an unstable region that is determined by the relationship between the reactor pressure, the reactor power and the subcooling of the core inlet coolant at start-up time, the nuclear reactor system comprises: an power control apparatus for generating a control rod operation signal for operating a control rod, based on the reactor water temperature change rate; a feed water control apparatus for generating a feed water flow rate signal and a discharge water flow rate signals based on the reactor water level signal; and a process computer for performing overall control of the power control apparatus and the feed water control apparatus, wherein the feed water control apparatus has the reactor water temperature change rate setting section for adjusting the reactor water temperature change rate set value based on the variation of the reactor water level signal.
摘要翻译： 为了在短时间内稳定地控制核反应堆，为了不进入由反应堆压力，反应堆功率和启动时的核心入口冷却剂的过冷度之间的关系确定的不稳定区域， 核反应堆系统包括：功率控制装置，用于基于反应堆水温度变化率产生用于操作控制棒的控制棒操作信号; 用于产生基于反应堆水位信号的给水流量信号和排放水流量信号的给水控制装置; 以及用于执行动力控制装置和给水控制装置的整体控制的处理计算机，其中，给水控制装置具有反应堆水温变化率设定部，其用于基于变化而调整反应堆水温变化率设定值 反应堆水位信号。
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8.发明申请Temperature Detection Apparatus For Natural Circulation Boiling Water Reactor 审中-公开自然循环沸腾水反应器温度检测装置公开(公告)号：US20090052604A1
公开(公告)日：2009-02-26
申请号：US12250762
申请日：2008-10-14
IPC分类号： G21C17/112
CPC分类号： G21C17/112
摘要： A natural circulation boiling water reactor includes a reactor pressure vessel, a chimney including a lattice member and arranged above a core in the reactor pressure vessel, and at least one thermocouple extension wire pulling conduit into which a temperature detection thermocouple and a cable connected to said temperature detection thermocouple are inserted. The thermocouple extension wire pulling conduit is disposed on an upper end surface of the lattice member and mounted to the upper end surface of the lattice member.
摘要翻译： 自然循环沸水反应器包括反应堆压力容器，包括晶格构件的烟囱，并且布置在反应堆压力容器中的核心上方，以及至少一个热电偶延长线拉动管道，温度检测热电偶和连接到所述 插入温度检测热电偶。 热电偶延长线牵引导管设置在格子部件的上端面上，安装于格子部件的上端面。
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9.发明申请公开(公告)号：US20070201599A1
公开(公告)日：2007-08-30
申请号：US11657459
申请日：2007-01-25
申请人： Atsushi Fushimi , Setsuo Arita , Kazuhiko Ishii , Yoshihiko Ishii , Shin Hasegawa , Atsutoshi Mizuide
发明人： Atsushi Fushimi , Setsuo Arita , Kazuhiko Ishii , Yoshihiko Ishii , Shin Hasegawa , Atsutoshi Mizuide
IPC分类号： G21C7/36
CPC分类号： G21C1/084 , G21C7/36 , G21D3/08 , G21Y2002/201 , G21Y2004/30 , G21Y2004/40 , Y02E30/31 , Y02E30/39
摘要： In order to provide a reactor power control apparatus which can maintain a stable water level when reactivity control based on control rod operation and water level adjustment is performed, this invention comprises a turbine control which calculates the load set error signal from the error between the set target generator power value and the generator power that was fed back and outputs to the turbine control apparatus; control rod control in the natural circulation boiling water reactor which calculates the control rod operation signal and outputs it to the control rod drive control apparatus; water level control inside the natural circulation boiling water reactor which calculates the water level set signal and outputs it to the feed water control apparatus; and the switch determining device which selectively outputs one of the control rod control and water level control based on the generator power that was fed back, the reactor power and water level, as well as switching rules and determination values.
摘要翻译： 为了提供一种当基于控制杆操作和水位调节进行反应性控制时可以保持稳定的水位的反应堆功率控制装置，本发明包括一个涡轮机控制，该控制装置根据该组中的误差计算负载设定误差信号 目标发电机功率值和反馈并输出到涡轮机控制装置的发电机功率; 控制棒控制在自然循环沸水反应堆中，计算控制棒的运行信号，并将其输出到控制棒驱动控制装置; 自然循环沸水反应堆内的水位控制，其计算水位设定信号并输出给给水控制装置; 以及切换判定装置，其基于反馈的发电机功率，反应堆功率和水位以及切换规则和判定值选择性地输出控制棒控制和水位控制中的一个。
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10.发明授权公开(公告)号：US07860206B2
公开(公告)日：2010-12-28
申请号：US11657459
申请日：2007-01-25
申请人： Atsushi Fushimi , Setsuo Arita , Kazuhiko Ishiii , Yoshihiko Ishii , Shin Hasegawa , Atsutoshi Mizuide
发明人： Atsushi Fushimi , Setsuo Arita , Kazuhiko Ishiii , Yoshihiko Ishii , Shin Hasegawa , Atsutoshi Mizuide
IPC分类号： G21C7/36
CPC分类号： G21C1/084 , G21C7/36 , G21D3/08 , G21Y2002/201 , G21Y2004/30 , G21Y2004/40 , Y02E30/31 , Y02E30/39
摘要： In order to provide a reactor power control apparatus which can maintain a stable water level when reactivity control based on control rod operation and water level adjustment is performed, this invention comprises a turbine control which calculates the load set error signal from the error between the set target generator power value and the generator power that was fed back and outputs to the turbine control apparatus; control rod control in the natural circulation boiling water reactor which calculates the control rod operation signal and outputs it to the control rod drive control apparatus; water level control inside the natural circulation boiling water reactor which calculates the water level set signal and outputs it to the feed water control apparatus; and the switch determining device which selectively outputs one of the control rod control and water level control based on the generator power that was fed back, the reactor power and water level, as well as switching rules and determination values.
摘要翻译： 为了提供一种在基于控制杆操作和水位调节的反应性控制时可以保持稳定的水位的反应堆功率控制装置，本发明包括一个涡轮机控制装置，该装置根据装置的误差计算负载设定误差信号 目标发电机功率值和反馈并输出到涡轮机控制装置的发电机功率; 控制棒控制在自然循环沸水反应堆中，计算控制棒的运行信号，并将其输出到控制棒驱动控制装置; 自然循环沸水反应堆内的水位控制，其计算水位设定信号并输出给给水控制装置; 以及切换判定装置，其基于反馈的发电机功率，反应堆功率和水位以及切换规则和判定值选择性地输出控制棒控制和水位控制中的一个。
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