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1. 发明授权

US4777016A Fuel assembly 失效
标题翻译：燃油组件
公开(公告)号：US4777016A
公开(公告)日：1988-10-11
申请号：US870400
申请日：1986-06-04
申请人： Toshiro Yoshioka , Takao Igarashi , Takaaki Mochida , Michihiro Ozawa
发明人： Toshiro Yoshioka , Takao Igarashi , Takaaki Mochida , Michihiro Ozawa
IPC分类号： G21C3/326 , G21C3/322 , G21C3/32
CPC分类号： G21C3/322 , G21C2003/3225 , G21Y2002/201 , G21Y2004/30 , Y02E30/38 , Y10S376/904
摘要： A fuel assembly including a channel box, upper and lower tie plates, fuel rods inserted in the channel box and held at upper and lower end portions by the upper and lower tie plates, a water rod disposed among the fuel rods and spacers for keeping the fuel rods and the water rod spaced from one another. The water rod has a diameter larger than that of each of the fuel rods and the upper end of the water rod has a height substantially as high as an upper end of an effective enriched fuel section of each fuel rod.
摘要翻译：一种燃料组件，包括通道箱，上下连接板，插入通道箱中的燃料棒，并通过上下连接板保持在上端和下端部，设置在燃料棒和间隔件之间的水杆，用于保持燃料棒和水杆彼此间隔开。水杆的直径大于每个燃料棒的直径，并且水杆的上端具有与每个燃料棒的有效富集燃料部分的上端大致相同的高度。

2. 发明授权

US4874574A Control rod 失效
标题翻译：控制杆
公开(公告)号：US4874574A
公开(公告)日：1989-10-17
申请号：US23230
申请日：1987-03-09
申请人： Takao Igarashi , Satoshi Sugawara , Yuichiro Yoshimoto , Shozo Saito , Takashi Fukumoto , Zenichiro Endo , Katsutoshi Shinbo
发明人： Takao Igarashi , Satoshi Sugawara , Yuichiro Yoshimoto , Shozo Saito , Takashi Fukumoto , Zenichiro Endo , Katsutoshi Shinbo
IPC分类号： G21C7/113
CPC分类号： G21C7/113 , G21Y2002/201 , G21Y2002/206 , G21Y2004/30 , Y02E30/39
摘要： A control rod has blades each of which includes a neutron absorption region in which neutron absorbers each loaded to the core of a reactor from below and made of absorption nuclear chain type neutron absorber are disposed. The neutron absorption region is divided into two, upper and lower, regions in an axial direction; the boundary between the upper and lower regions is positioned within the range of from 3/8 to 5/8 of the full length of the neutron absorption region in the axial direction from the lower end of the neutron absorption region; and the quantity of the absorption nuclear chain type neutron absorber contained in the lower region in the section perpendicular to the axial direction is smaller than the quantity of the absorption nuclear chain type neutron absorber contained in the upper region in the section perpendicular to the axial direction.
摘要翻译：控制杆具有叶片，每个叶片包括中子吸收区域，其中设置有从吸收核链型中子吸收器制成的从下方装载到反应器的核心的中子吸收体。中子吸收区域沿轴向分为两个，上部和下部区域; 上部和下部区域之间的边界位于从中子吸收区域的下端沿轴向的中子吸收区域全长的3/8至5/8的范围内; 并且与垂直于轴向的截面中包含在下部区域中的吸收核链型中子吸收剂的量小于垂直于轴向的截面中包含在上部区域中的吸收核链型中子吸收剂的量。

3. 发明授权

US4686079A Fuel assembly 失效
标题翻译：燃油组件
公开(公告)号：US4686079A
公开(公告)日：1987-08-11
申请号：US788590
申请日：1985-10-17
申请人： Toshimitsu Ishikawa , Mishihiro Ozawa , Mikio Sakurai , Mutsuo Konno , Yasuhiro Aizawa , Takao Igarashi , Hiromasa Hirakawa
发明人： Toshimitsu Ishikawa , Mishihiro Ozawa , Mikio Sakurai , Mutsuo Konno , Yasuhiro Aizawa , Takao Igarashi , Hiromasa Hirakawa
IPC分类号： G21C3/344 , G21C3/32
CPC分类号： G21C3/344 , Y02E30/40
摘要： A fuel assembly has a fuel spacer consisting of a water rod having an outer diameter greater than that of fuel rods and a large number of circular sleeves into which the fuel rods are inserted. The fuel spacer has four bridge members. Both ends of these bridge members are fitted to two of eight circular sleeves which are adjacent one another in the diagonal direction of the fuel spacer. Both ends of each bridge member are bent so that its center projects outwardly away from the water rod.
摘要翻译：燃料组件具有由外径大于燃料棒的水杆和大量圆形套筒组成的燃料间隔件，燃料棒被插入其中。燃料间隔件具有四个桥构件。这些桥构件的两端安装在八个圆形套筒中的两个，这两个圆形套筒在燃料间隔件的对角线方向上彼此相邻。每个桥构件的两端弯曲，使得其中心向外突出远离水杆。

4. 发明授权

US4656000A Nuclear reactor 失效
标题翻译：核反应堆
公开(公告)号：US4656000A
公开(公告)日：1987-04-07
申请号：US673365
申请日：1984-11-20
申请人： Mikio Sakurai , Shiro Nakamura , Takao Igarashi , Koki Yamauchi
发明人： Mikio Sakurai , Shiro Nakamura , Takao Igarashi , Koki Yamauchi
IPC分类号： G21C7/14 , G21C1/08 , G21C3/322 , G21C15/02
CPC分类号： G21C1/084 , G21C3/322 , Y02E30/31 , Y02E30/38
摘要： A nuclear reactor having a reactor vessel adapted to be supplied with a coolant, a reactor core disposed in the reactor vessel and including a plurality of fuel assemblies, a plurality of control rods adapted to be inserted into the reactor core and a plurality of control rod driving devices for driving the control rods into and out of the reactor core. A plurality of tubular coolant passage members are disposed above the fuel assemblies so as to receive the heated coolant discharged from the fuel assemblies, so that the heated coolant flows upwardly through the tubular coolant passage members. The tubular coolant passage members provide a chimney effect which enhances the upward flow of the coolant and, hence, increases the flow rate of coolant flowing through the reactor core. In consequence, a greater cooling effect is obtained and the range of power controllable by the control rods is widened. In consequence, the construction of the reactor is simplified and the size is decreased due to elimination of coolant recycling system in the reactor vessel.
摘要翻译：一种具有适于供应冷却剂的反应器容器的核反应堆，设置在反应堆容器中并包括多个燃料组件的反应堆堆芯，多个控制棒，其适于插入反应堆芯中，以及多个控制棒用于驱动控制杆进入和离开反应堆堆芯的驱动装置。多个管状冷却剂通道构件设置在燃料组件上方，以便容纳从燃料组件排出的被加热的冷却剂，使得被加热的冷却剂向上流过管状冷却剂通道构件。管状冷却剂通道构件提供了一种烟囱效应，其增强了冷却剂的向上流动，并且因此增加了流过反应堆堆芯的冷却剂的流速。因此，获得更大的冷却效果，并且由控制棒控制的功率范围变宽。因此，由于消除反应堆容器中的冷却剂再循环系统，反应器的结构被简化并且尺寸减小。

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