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1. 发明授权

US5299244A Fuel assembly 失效
标题翻译：燃油组件
公开(公告)号：US5299244A
公开(公告)日：1994-03-29
申请号：US772440
申请日：1991-10-07
申请人： Koki Yamauchi , Yasunori Bessho , Sadayuki Izutsu
发明人： Koki Yamauchi , Yasunori Bessho , Sadayuki Izutsu
IPC分类号： G21C3/326 , G21C3/328 , G21C3/34
CPC分类号： G21C3/328 , G21Y2002/201 , G21Y2004/302 , Y02E30/38
摘要： A plurality of fuel rods containing fissile material are arranged in triangle lattices. A plurality of water rods groups are arranged among the fuel rods. Each of the water rods groups includes no fuel rod but a plurality of water rods which are arranged adjacently each other in triangle lattices having substantially same pitch as the fuel rods. The water rods groups are arranged not adjacently each other, and are surrounded with the fuel rods. the outer diameter of the water rod is smaller than the pitch. The fuel assembly is able to suppress increment of pressure loss because of formation of coolant path among adjacent water rods. Further, void reactivity coefficient is able to be small.
摘要翻译：包含易裂变材料的多个燃料棒被布置成三角形格子。燃料棒之间布置有多个水杆组。每个水棒组不包括燃料棒，而是包括与燃料棒具有基本相同节距的三角形格架相邻布置的多个水杆。水杆组彼此相邻配置，并被燃料棒包围。水杆的外径小于间距。燃料组件由于在相邻的水棒之间形成冷却剂路径而能够抑制压力损失的增加。此外，空隙反应性系数能够小。

2. 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。

3. 发明授权

US4597937A Fuel spacer 失效
标题翻译：燃料间隔
公开(公告)号：US4597937A
公开(公告)日：1986-07-01
申请号：US511905
申请日：1983-07-08
申请人： Mikio Sakurai , Koki Yamauchi , Shuji Suzuki
发明人： Mikio Sakurai , Koki Yamauchi , Shuji Suzuki
IPC分类号： G21C3/344 , G21C3/34
CPC分类号： G21C3/344 , G21Y2002/201 , G21Y2004/30 , Y02E30/40
摘要： A plurality of independent cells having a regular octagonal or circular cross section are arranged in the form of a lattice. Cross-sectionally square independent cells are substituted for two octagonal or circular cells in the central portion of the lattice arrangement. These two square independent cells are so formed that each side of the cells has the largest possible length when the cells are placed among the adjacent cells having a regular octagonal or circular cross section. Spacer support rods serving also as water rods are inserted into the square cells in such a fuel spacer, which consists of a combination of cells having a regular octagonal or circular cross section and cells having a square cross section as mentioned above, to form a fuel assembly.
摘要翻译：具有规则八边形或圆形横截面的多个独立单元以格子的形式排列。在晶格布置的中心部分，横截面正方形独立单元被二取代八角形或圆形单元。这两个平方独立的单元被形成为当单元被放置在具有规则的八边形或圆形横截面的相邻单元中之后，单元的每侧具有最大的可能长度。也用作水棒的间隔支撑杆插入这样的燃料间隔件中的方形电池中，该间隔件由具有规则八边形或圆形横截面的电池组合和如上所述具有正方形横截面的电池组成，以形成燃料部件。

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