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1. 发明授权

US5519739A Boiling water type thermal neutron reactor and its operating method 失效
标题翻译：沸水型热中子反应堆及其操作方法
公开(公告)号：US5519739A
公开(公告)日：1996-05-21
申请号：US297040
申请日：1994-08-29
申请人： Ryoji Masumi , Motoo Aoyama , Junichi Koyama , Yoko Ishibashi , Osamu Yokomizo
发明人： Ryoji Masumi , Motoo Aoyama , Junichi Koyama , Yoko Ishibashi , Osamu Yokomizo
IPC分类号： G21C1/08 , G21C7/32
CPC分类号： G21C7/32 , G21C1/084 , G21Y2002/201 , G21Y2004/30 , G21Y2004/403 , Y02E30/31 , Y02E30/39
摘要： The reactor shut-down margin and the thermal margin, as well as the output per unit volume of the core is increased. When A is the total cross sectional area of the non-boiling water areas in the channel boxes each surrounding a fuel assembly and non-boiling water areas outside the channel boxes and B is the cross sectional areas of boiling water areas in the channel boxes, the relation of 1>B/(A+B).gtoreq.0.76 is set. A control unit adjusts a rotational speed of a recirculation internal pump which controls the cooling water flow rate per unit area in the core section to 3.0.times.10.sup.3 t/h/m.sup.2 at the beginning of the operation cycle and controls the cooling water flow rate per the unit area in the core cross section to 3.3.times.10.sup.3 t/h/m.sup.2 at the end of an operation cycle.
摘要翻译：反应堆停机余量和热裕量以及核心单位体积的输出增加。当A是每个围绕燃料组件的通道箱中的非沸水区域的总横截面积和通道箱外面的非沸水区域，而B是通道箱中沸水区域的横截面积时，设置1> B /（A + B）> / = 0.76的关系。控制单元调节再循环内部泵的转速，其在操作周期开始时将芯部中的每单位面积的冷却水流量控制为3.0×10 3 t / h / m 2，并控制每单位的冷却水流量核心横截面积在运行周期结束时为3.3×103t / h / m2。

2. 发明授权

US5422922A Fuel assembly and reactor core 失效
标题翻译：燃料组件和反应堆堆芯
公开(公告)号：US5422922A
公开(公告)日：1995-06-06
申请号：US158426
申请日：1993-11-29
申请人： Ryoji Masumi , Motoo Aoyama , Junichi Koyama , Yoko Ishibashi , Takaaki Mochida , Hideo Soneda
发明人： Ryoji Masumi , Motoo Aoyama , Junichi Koyama , Yoko Ishibashi , Takaaki Mochida , Hideo Soneda
IPC分类号： G21C3/326 , G21C3/328 , G21C5/00 , G21C3/32
CPC分类号： G21C3/328 , G21Y2002/201 , G21Y2004/305 , Y02E30/38
摘要： A fuel assembly and a reactor core using same which are able to increase size of the fuel assembly with ensuring thermal margin and reactor shut down margin.A distance between centers of adjacent fuel assemblies is about 23 cm, which is enlarged about 1.5 times of conventional fuel assemblies. A thickness of water gap region is about 16 cm, which is relatively thinner than that of prior art. While, H/U ratio is about 5 as same as that of the prior art, and decreasing amount of non-boiling water in the water gap region is arranged in a channel box as water rods. Consequently, a ratio of transversal cross section area of the water rods to transversal cross section area of the fuel rods becomes about 0.6, and local power peaking factor can be decreased and thermal margin can be increased. Further, the transversal cross section area of the water rod is selected to be 15 cm.sup.2 so as to ensure the reactor shut down margin by reducing excess reactivity.
摘要翻译：一种燃料组件和使用该燃料组件的反应堆芯，其能够增加燃料组件的尺寸以确保热裕度和反应堆关闭余量。相邻燃料组件的中心之间的距离约为23cm，其扩大了常规燃料组件的约1.5倍。水隙区域的厚度约为16cm，这比现有技术相对薄。而H / U比与现有技术相同为约5，而在水槽区域中的非沸水量的减少量作为水棒布置在通道箱中。因此，水棒的横截面积与燃料棒的横截面积的比率变为约0.6，能够降低局部功率峰值因数，能够提高热裕度。此外，水杆的横截面面积选择为15cm 2，以通过减少过量的反应性来确保反应堆关闭边缘。

3. 发明授权

US5337337A Fuel assembly 失效
标题翻译：燃油组件
公开(公告)号：US5337337A
公开(公告)日：1994-08-09
申请号：US857263
申请日：1992-03-25
申请人： Motoo Aoyama , Ryoji Masumi , Yooko Ishibashi , Kunitoshi Kurihara
发明人： Motoo Aoyama , Ryoji Masumi , Yooko Ishibashi , Kunitoshi Kurihara
IPC分类号： G21C3/30 , G21C3/328 , G21C3/32
CPC分类号： G21C3/328 , G21Y2002/201 , G21Y2004/30 , Y02E30/38
摘要： A fuel assembly comprising a plurality of fuel rods, where fuel rods containing a burnable poison element having a smaller neutron absorption cross-section such as boron are provided in a region of soft neutron energy spectrum and a large thermal neutron flux and fuel rods containing a burnable poison element having a larger neutron absorption cross-section such as gadolinium and fuel rods containing no such burnable poison element are provided in other region of average neutron energy spectrum, has a flat fuel rod power distribution throughout the fuel lifetime even against substantially uniform uranium enrichment distribution with reduced parasitic neutron absorption by gadolia, that is, with higher burnup and reduced fuel cycle cost.
摘要翻译：一种燃料组件，其包括多个燃料棒，其中在软中子能谱范围内设置含有具有较小中子吸收截面的可燃毒元素的燃料棒，例如硼，并且包含大量热中子通量和含有在其他平均中子能谱区域中提供了具有较大中子吸收截面的可燃毒物元素，例如钆和不含这种可燃毒物元素的燃料棒，在整个燃料使用寿命期间具有扁平的燃料棒功率分布，甚至基本上均匀的铀浓缩分布减少钆的寄生中子吸收，即燃耗增加和燃料循环成本降低。

4. 发明授权

US06885722B2 Fuel assembly 有权
标题翻译：燃油组件
公开(公告)号：US06885722B2
公开(公告)日：2005-04-26
申请号：US10651936
申请日：2003-09-02
申请人： Ryoji Masumi
发明人： Ryoji Masumi
IPC分类号： G21C3/33 , G21C3/32 , G21C3/00
CPC分类号： G21C3/32 , G21Y2002/201 , G21Y2004/30 , Y02E30/40
摘要： A fuel assembly attains high burnup and increases reactor shut-down margin when loaded into a reactor core wherein a water gap width on a control rod side and a water gap width on a side opposite to the control rod side are almost equal to each other. The fuel assembly has a plurality of fuel rods arranged in a square lattice pattern, each fuel rod being filled with nuclear fuel pellets and also has at least one neutron moderator rod shifted toward one corner where a control rod is inserted, away from a cross sectional center of the fuel assembly.
摘要翻译：当装载到反应堆芯中时，燃料组件达到高燃耗并且增加了反应堆关闭余量，其中控制棒侧的水隙宽度和与控制棒侧相反的一侧上的水隙宽度几乎相等。燃料组件具有以正方形格子图案布置的多个燃料棒，每个燃料棒填充有核燃料颗粒，并且还具有至少一个中子减速器杆，该中子减速器杆向控制棒插入的一个角部移开，远离横截面燃料组件的中心。

5. 发明授权

US06643350B2 Fuel assembly 有权
公开(公告)号：US06643350B2
公开(公告)日：2003-11-04
申请号：US10112861
申请日：2002-04-02
申请人： Ryoji Masumi
发明人： Ryoji Masumi
IPC分类号： G21C300
CPC分类号： G21C3/32 , G21Y2002/201 , G21Y2004/30 , Y02E30/40
摘要： A fuel assembly attains high burnup and increases reactor shut-down margin when loaded into a reactor core wherein a water gap width on a control rod side and a water gap width on a side opposite to the control rod side are almost equal to each other. The fuel assembly has a plurality of fuel rods arranged in a square lattice pattern, each fuel rod being filled with nuclear fuel pellets and also has at least one neutron moderator rod shifted toward one corner where a control rod is inserted, away from a cross sectional center of the fuel assembly.

6. 发明授权

US06434210B1 Fuel assembly 有权
标题翻译：燃油组件
公开(公告)号：US06434210B1
公开(公告)日：2002-08-13
申请号：US09335694
申请日：1999-06-18
申请人： Ryoji Masumi
发明人： Ryoji Masumi
IPC分类号： G21C300
CPC分类号： G21C3/32 , G21Y2002/201 , G21Y2004/30 , Y02E30/40
摘要： A fuel assembly attains high burnup and increases reactor shut-down margin when loaded into a reactor core wherein a water gap width on a control rod side and a water gap width on a side opposite to the control rod side are almost equal to each other. The fuel assembly has a plurality of fuel rods arranged in a square lattice pattern, each fuel rod being filled with nuclear fuel pellets and also has at least one neutron moderator rod shifted toward one corner where a control rod is inserted, away from a cross sectional center of the fuel assembly.
摘要翻译：当装载到反应堆芯中时，燃料组件达到高燃耗并且增加了反应堆关闭余量，其中控制棒侧的水隙宽度和与控制棒侧相反的一侧上的水隙宽度几乎相等。燃料组件具有以正方形格子图案布置的多个燃料棒，每个燃料棒填充有核燃料颗粒，并且还具有至少一个中子减速器杆，该中子减速器杆向控制棒插入的一个角部移开，远离横截面燃料组件的中心。

7. 发明授权

US5037607A Reactor 失效
标题翻译：反应堆
公开(公告)号：US5037607A
公开(公告)日：1991-08-06
申请号：US354780
申请日：1989-05-22
申请人： Ryoji Masumi , Kunitoshi Kurihara , Masayoshi Ishida
发明人： Ryoji Masumi , Kunitoshi Kurihara , Masayoshi Ishida
IPC分类号： G21C3/07 , G21C1/03 , G21C3/06 , G21C3/32 , G21C3/322 , G21C3/324 , G21C3/326 , G21C3/328 , G21C5/00 , G21C5/20 , G21C7/10
CPC分类号： G21C3/32 , G21C1/03 , G21C3/06 , G21C3/326 , G21Y2002/104 , G21Y2004/30 , G21Y2004/40 , Y02E30/34 , Y02E30/35
摘要： The present invention provides a structural component for constituting a reactor core comprising one and the other metallic members arranged adjacent to each other in a reactor, and reduction means for reducing a difference in the swelling between the metallic members due to neutron irradiation thereto; a core of the reactor comprising a plurality of such constructural element; and a method for operating a reactor having metallic tubular members arranged in a core of the reactor and each enclosing a plurality of metallic cladding tubes in each of which substance heated by neutron irradiation thereto and cooled by passing coolant through the reactor core is filled, wherein the reactor is operated under a condition that an average used temperature of the cladding tubes is higher than an irradiation temperature that the swelling rate of the cladding material due to neutron irradiation thereto becomes maximum and an average used temperature of the tubular members is lower than an irradiation temperature that the swelling rate of the tubular material due to neutron irradiation thereto becomes maximum. According to the structural component and the reactor core, since the difference in the swelling between the metallic members due to neutron irradiation thereto can be decreased, any mechanical interactions can be prevented or reduced. According to the present method, since the difference in the swelling between the metallic members due to neutron irradiation thereto can be decreased due to the above operation temperature condition, any mechanical interactions can be prevented or reduced.

8. 发明授权

US4762672A Fast breeder reactor 失效
标题翻译：快速增殖反应堆
公开(公告)号：US4762672A
公开(公告)日：1988-08-09
申请号：US787390
申请日：1985-10-15
申请人： Kunitoshi Kurihara , Katsuyuki Kawashima , Ryoji Masumi , Kazuo Azekura
发明人： Kunitoshi Kurihara , Katsuyuki Kawashima , Ryoji Masumi , Kazuo Azekura
IPC分类号： G21C7/10 , G21C7/103 , G21C7/27
CPC分类号： G21C7/27 , G21C7/103 , G21Y2002/201 , G21Y2004/10 , G21Y2004/30 , Y02E30/34 , Y02E30/39
摘要： In a fast breeder reactor provided with a core comprising a core region packed with a fissile material and a blanket region which surrounds the outside of said core region and most of which is formed of a fertile material, and a plurality of control rods which are put in and out of the above core region by a control rod driving device, the fast breeder reactor of the present invention is characterized in that each of said control rods is constructed of a neutron absorber region packed with a neutron absorber and a gas region disposed in the end portion on the side further separated from said control rod driving device than said neutron absorber region. With this invention, the spectral shift effect can be produced by utilizing said gas region, thereby increasing the core reactvity of the fast breeder reactor.
摘要翻译：在具有核心的快速增殖反应器中，该核心包括填充有易裂变材料的核心区域和围绕所述核心区域的外部的覆盖区域，并且大部分由可育材料形成，并且多个控制棒被放置通过控制棒驱动装置进出上述芯区域，本发明的快速增殖反应器的特征在于，每个所述控制棒由填充有中子吸收器的中子吸收体区域和设置在与所述中子吸收体区域相比，与所述控制棒驱动装置分离的一侧的端部。利用本发明，通过利用所述气体区域可以产生光谱偏移效应，从而提高快速增殖反应堆的核心反应性。

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