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公开(公告)号:US6005905A
公开(公告)日:1999-12-21
申请号:US664663
申请日:1996-06-17
申请人: Akihiro Yamanaka , Katsumasa Haikawa , Akiko Kanda , Takaaki Mochida , Junichi Yamashita , Motoo Aoyama , Yoko Yuchi , Junichi Koyama
发明人: Akihiro Yamanaka , Katsumasa Haikawa , Akiko Kanda , Takaaki Mochida , Junichi Yamashita , Motoo Aoyama , Yoko Yuchi , Junichi Koyama
CPC分类号: G21C5/00 , G21C7/02 , G21Y2002/201 , G21Y2004/30 , G21Y2004/402 , Y02E30/39
摘要: In an arrangement of an initial core, the core is loaded with 572 high enrichment fuel assemblies H with 4.2 wt % average enrichment and 300 low enrichment fuel assemblies L with 1.5 wt % average enrichment. The average enrichment of the core is about 3.3 wt %. In this core, only the low enrichment fuel assemblies are loaded into the most outer position of the core and the high enrichment fuel assemblies are loaded into an area other than the most outer position. In this arrangement, the average enrichment of reload fuel assemblies is 3.7 wt %.
摘要翻译: 在初始核心的布置中,核心装载有572个高浓缩燃料组件H,4.2重量%的平均浓缩物和300个低富集燃料组件L,具有1.5重量%的平均富集度。 核心的平均富集度约为3.3重量%。 在该核心中,只有低浓度燃料组件被装载到核心的最外部位置,而高浓缩燃料组件被装载到除了最外部位置之外的区域中。 在这种布置中,重新加载燃料组件的平均富集为3.7重量%。
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公开(公告)号:US5781604A
公开(公告)日:1998-07-14
申请号:US727008
申请日:1996-10-08
申请人: Katsumasa Haikawa , Akihiro Yamanaka , Akiko Kanda , Motoo Aoyama , Yoko Yuchi , Junichi Yamashita
发明人: Katsumasa Haikawa , Akihiro Yamanaka , Akiko Kanda , Motoo Aoyama , Yoko Yuchi , Junichi Yamashita
IPC分类号: G21C5/12 , G21C3/32 , G21C3/326 , G21C3/328 , G21C3/62 , G21C5/00 , G21C5/02 , G21C7/113 , G21C3/00
摘要: In an initial core of the present invention, a low enrichment fuel assembly having the lowest average enrichment factor and three fuel assemblies having a higher average enrichment factor than that of the low enrichment fuel assembly are arranged in a square shape, control rods of a cross shape are arranged at each of four corners of the square shape to constitute a unit loading pattern, and a plurality of the unit loading patterns are provided in the central region of the core, the fuel assemblies having the higher average enrichment factor are divided by a diagonal line into a first region of the side of the control rods and a second region of the side opposite to the control rods, and the number of the gadolinia-containing fuel rods is greater in the second region by at least two than in the first region. The initial core having an enhanced average enrichment factor for accomplishing a high exposure, makes it possible to maintain thermal margin, to suitably suppress the excess reactivity and to improve fuel economy.
摘要翻译: 在本发明的初始核心中,具有最低平均富集因子的低富集燃料组件和具有比低浓度燃料组件更高的平均富集因子的三个燃料组件布置成正方形,十字形控制棒 形状被布置在方形的四个角中的每一个角上以构成单元加载模式,并且在芯的中心区域中设置多个单元加载模式,具有较高平均富集因子的燃料组件被除以 对角线插入到控制棒的一侧的第一区域和与控制棒相对的一侧的第二区域,并且含氧化钆的燃料棒的数量在第二区域中比在第一区域中的至少两个更大 地区。 具有增强的平均富集因子的初始核心用于实现高暴露,使得可以保持热裕度,以适当地抑制过量反应性并提高燃料经济性。
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3.
公开(公告)号:US06205196B1
公开(公告)日:2001-03-20
申请号:US09048994
申请日:1998-03-27
申请人: Junichi Yamashita , Kumiaki Moriya , Katsumasa Haikawa , Yasuhiro Masuhara , Taichi Takii , Akihiro Yamanaka , Takao Kondo , Motoo Aoyama , Masao Chaki
发明人: Junichi Yamashita , Kumiaki Moriya , Katsumasa Haikawa , Yasuhiro Masuhara , Taichi Takii , Akihiro Yamanaka , Takao Kondo , Motoo Aoyama , Masao Chaki
IPC分类号: G21C334
摘要: A boiling water type nuclear reactor core, in which a plurality of fuel assemblies, each enclosed in a channel box, are loaded and a plurality of control rods, each having control blades, are arranged between the channel boxes. Latitudinal long blade control rods, each having control rod blades which extend latitudinally in four directions, are arranged between channel boxes on diagonals of square bundle regions each formed by a plurality of fuel assemblies, and latitudinal short blade control rods, each having control rod blades which extend latitudinally in four directions with each control rod blade having a latitudinal length of about half of the width of one of the square bundle regions, are arranged between the channel boxes in the center of each of the square bundle regions. The long blade control rods have a latitudinal blade length which is about twice as long as the latitudinal blade length of the short blade control rods.
摘要翻译: 沸水型核反应堆核心,其中装有封闭在通道箱中的多个燃料组件,并且在通道箱之间设置有多个控制杆,每个控制杆具有控制叶片。 横向长叶片控制棒,每个具有沿四个方向纬向延伸的控制杆叶片,布置在每个由多个燃料组件形成的方形束区域的对角线上的通道箱和纬向短叶片控制棒之间,每个具有控制杆叶片 每个方形束区域的中心处的通道箱之间布置有横截面在四个方向上的横截面,每个控制杆叶片具有约一个平方束区域的宽度的大约一半的纬度长度。 长叶片控制杆具有纬度叶片长度,其长度为短叶片控制棒的纬向叶片长度的两倍。
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4.
公开(公告)号:US06510192B1
公开(公告)日:2003-01-21
申请号:US09703933
申请日:2000-11-02
申请人: Junichi Yamashita , Kumiaki Moriya , Katsumasa Haikawa , Yasuhiro Masuhara , Taichi Takii , Akihiro Yamanaka , Takao Kondo , Motoo Aoyama , Masao Chaki
发明人: Junichi Yamashita , Kumiaki Moriya , Katsumasa Haikawa , Yasuhiro Masuhara , Taichi Takii , Akihiro Yamanaka , Takao Kondo , Motoo Aoyama , Masao Chaki
IPC分类号: G21C334
摘要: A boiling water type nuclear reactor core, in which a plurality of fuel assemblies, each enclosed in a channel box, are loaded and a plurality of control rods, each having control blades, are arranged between the channel boxes. Long blade control rods, each having control rod blades which extend in four directions, are arranged between channel boxes on diagonals of square bundle regions each formed by a plurality of fuel assemblies, and short blade control rods, each having a control rod blade length of about half of the width of one of the square bundle regions, are arranged between the channel boxes in the center of each of the square bundle regions.
摘要翻译: 沸水型核反应堆核心,其中装有封闭在通道箱中的多个燃料组件,并且在通道箱之间设置有多个控制杆,每个控制杆具有控制叶片。 每个具有四个方向延伸的控制杆叶片的长叶片控制棒布置在每个由多个燃料组件形成的方形束区域的对角线上的通道箱之间,以及短叶片控制棒,每个叶片控制棒的控制杆叶片长度 其中一个平方束区域的宽度的大约一半被布置在每个平方束区域的中心的通道盒之间。
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公开(公告)号:US5787139A
公开(公告)日:1998-07-28
申请号:US858687
申请日:1997-05-19
申请人: Mitsunari Nakamura , Katsumasa Haikawa , Akihiro Yamanaka , Akiko Kanda , Takaaki Mochida , Junichi Yamashita , Shigetada Tanabe , Shinichi Kirihara
发明人: Mitsunari Nakamura , Katsumasa Haikawa , Akihiro Yamanaka , Akiko Kanda , Takaaki Mochida , Junichi Yamashita , Shigetada Tanabe , Shinichi Kirihara
CPC分类号: G21C19/20 , G21C5/00 , G21C7/00 , G21Y2002/201 , G21Y2004/40 , G21Y2004/60 , Y02E30/39
摘要: In a fuel loading method of the present invention, a nuclear reactor is operated up to the second cycle without exchanging the fuel. Low-enrichment fuel is discharged from a core at the end of the second cycle and at the end of the third cycle. Moreover, high-enrichment fuel with an average enrichment higher than that of replacement fuel is discharged from the core at the end of the third cycle and reloaded into the core at the end of the fifth cycle. According to the present invention, because the high-enrichment fuel discharged from the core at the end of the third cycle normally has a high enrichment, a short combustion period, and a low burnup compared to the replacement fuel burned for 4 to 5 cycles, a lot of fissionable material are left in the high-enrichment fuel. By reloading the high-enrichment fuel to the core after one cycle or more passes, it is possible to greatly increase the discharge exposure of initially loaded fuel. Thereby, it is possible to greatly decrease the number of pieces of the replacement fuel.
摘要翻译: 在本发明的燃料加载方法中,核反应堆直到第二循环运转而不更换燃料。 在第二循环结束时和第三循环结束时,低浓度燃料从核心排出。 此外,平均浓度高于替代燃料的高浓度燃料在第三循环结束时从核心排出,并在第五循环结束时重新装入核心。 根据本发明,由于在第三循环结束时从核心排出的高浓度燃料通常具有高的富集度,较短的燃烧时间和低的燃耗,与替代燃料相比燃烧4至5个循环, 高浓缩燃料中留有大量可裂变材料。 通过在一个循环或更多次循环之后将高浓度燃料重新加载到核心,可以大大增加初始负载燃料的排放暴露。 由此,可以大幅减少替换燃料的数量。
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公开(公告)号:US06504889B1
公开(公告)日:2003-01-07
申请号:US09381094
申请日:1999-09-15
申请人: Kenmi Narita , Katsumasa Haikawa , Akihiro Yamanaka , Akiko Kanda , Takaaki Mochida , Junichi Yamashita , Junichi Koyama
发明人: Kenmi Narita , Katsumasa Haikawa , Akihiro Yamanaka , Akiko Kanda , Takaaki Mochida , Junichi Yamashita , Junichi Koyama
IPC分类号: G21C1902
CPC分类号: G21C7/08 , G21F5/02 , G21Y2002/201 , G21Y2004/40 , Y02E30/39
摘要: A method of operating a nuclear reactor reduces the number of reload fuels to be loaded into the nuclear reactor in the second and the following operation cycles. The nuclear reactor has a reactor core in which a plurality of reload fuel assemblies respectively having different infinite multiplication factors are arranged. The method operates the nuclear reactor with control rods inserted in control cells each comprising four reload fuel assemblies having relatively large infinite multiplication factors among the plurality of reload fuel assemblies for a period longer than half of a period of an operation cycle.
摘要翻译: 操作核反应堆的方法在第二次和随后的操作循环中减少了要加载到核反应堆中的重新加载燃料的数量。核反应堆具有反应堆堆芯,其中分别具有不同无限倍增系数的多个重载燃料组件 被安排。 该方法操作核反应堆,其中控制棒插入控制单元中,每个控制单元包括在多个重新加载的燃料组件中具有相对较大的无限倍增因子的四个重载燃料组件,时间长于操作周期的一半。
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公开(公告)号:US6141396A
公开(公告)日:2000-10-31
申请号:US254183
申请日:1999-03-02
申请人: Akiko Kanda , Katsumasa Haikawa , Akihiro Yamanaka , Kenmi Narita , Junichi Yamashita , Junichi Koyama
发明人: Akiko Kanda , Katsumasa Haikawa , Akihiro Yamanaka , Kenmi Narita , Junichi Yamashita , Junichi Koyama
摘要: Several unit loading patterns are arranged in the central area of an initial core to which the present invention is applied. The unit loading pattern is composed of one square-shaped unit cell and four cross-shaped control rods 3 which surround the unit cell. The unit cell is composed of one low enrichment fuel assembly 7, two high enrichment fuel assemblies 8 and one high enrichment fuel assembly 9. The low enrichment fuel assemblies 7 of each unit loading pattern adjoin each other and are arranged to constitute the first control cell 2a being square-shaped. The high enrichment fuel assemblies 9, obliquely adjoining the low enrichment fuel assembly 7 in each unit loading pattern, adjoin each other and are arranged to constitute the second control cell 2b being square-shaped. The high enrichment fuel assembly 9 constituting the unit loading pattern is divided into a control rod side area and an anticontrol rod side area by a diagonal line L1, and the number of Gd fuel rods in the control rod side area is 2 or more than the number in the anticontrol rod side area. By providing this structure, the increase of the local peaking factor on the control rod side can be suppressed and the thermal margin can be sufficiently secured, even if the control rod 3 of the second control cell 2b is extracted after the second operation cycle.
摘要翻译: PCT No.PCT / JP96 / 02501 Sec。 371日期1999年3月2日 102(e)1999年3月2日PCT PCT 1996年9月4日PCT公布。 公开号WO98 / 10426 日期1998年3月12日几个单元加载模式布置在应用本发明的初始核心的中心区域中。 单元加载模式由一个方形单位单元和围绕单位单元的四个十字形控制杆3组成。 单元电池由一个低浓度燃料组件7,两个高浓缩燃料组件8和一个高浓缩燃料组件9组成。每个单元装载模式的低浓缩燃料组件7彼此邻接并且被布置成构成第一控制单元 2a为方形。 在每个单元装载模式中与低浓缩燃料组件7倾斜相邻的高浓缩燃料组件9相互邻接并被布置成构成正方形的第二控制单元2b。 构成单元装载图案的高浓缩燃料组件9通过对角线L1分为控制棒侧区域和反向推杆侧面区域,控制棒侧区域中的Gd燃料棒的数量为2个以上 抗电极杆侧面的数量。 通过提供这种结构,即使在第二操作周期之后提取第二控制单元2b的控制棒3,也可以抑制控制棒侧的局部峰值系数的增加,并且可以充分确保热裕度。
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公开(公告)号:US5631939A
公开(公告)日:1997-05-20
申请号:US521372
申请日:1995-08-31
申请人: Hiroko Haraguchi , Yoshihiri Iwashita , Toshiro Yoshioka , Junichi Koyama , Akihiro Yamanaka , Mitsunari Nakamura , Katsumasa Haikawa
发明人: Hiroko Haraguchi , Yoshihiri Iwashita , Toshiro Yoshioka , Junichi Koyama , Akihiro Yamanaka , Mitsunari Nakamura , Katsumasa Haikawa
IPC分类号: G21C5/00
CPC分类号: G21C5/00 , G21Y2002/201 , G21Y2004/30 , Y02E30/40
摘要: In an initial core constituted by various kinds of fuel assemblies having a different average enrichment of uranium 235 four fuel assemblies having the lowest average enrichment constitute a square shaped cell. Three fuel assemblies having the highest average enrichment constitute an L-shaped cell, and the L-shaped cell is arranged at corners of the square shaped cells, whereby each assembly of the L-shaped cell adjoins a square shaped cell. The ratio of the number of assemblies of the L-shaped cell to the total number of fuel assemblies in the core is 10% or more.
摘要翻译: 在由具有不同铀235的不同浓度的各种燃料组件构成的初始核心中,具有最低平均浓度的四个燃料组件构成一个正方形的电池。 具有最高平均浓度的三个燃料组件构成L形电池,并且L形电池被布置在方形电池的拐角处,由此L形电池的每个组件邻接正方形电池。 L形电池的组件数与芯中的燃料组件总数之比为10%以上。
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公开(公告)号:US5872826A
公开(公告)日:1999-02-16
申请号:US882335
申请日:1997-06-25
申请人: Tadashi Fujieda , Masahisa Inagaki , Iwao Takase , Yoshitaka Nishino , Junichi Yamashita , Akihiro Yamanaka , Kenichi Ito , Junjiro Nakajima , Takehiro Seto
发明人: Tadashi Fujieda , Masahisa Inagaki , Iwao Takase , Yoshitaka Nishino , Junichi Yamashita , Akihiro Yamanaka , Kenichi Ito , Junjiro Nakajima , Takehiro Seto
CPC分类号: G21C3/324 , G21C7/04 , G21Y2002/103 , G21Y2002/302 , G21Y2002/304 , G21Y2004/20 , G21Y2004/30 , G21Y2004/40 , Y02E30/39
摘要: A channel box for a nuclear-reactor fuel assembly (MOX fuel assembly) containing plutonium, capable of properly controlling the excess reactivity without mixing neutron absorber or burnable poison into a fuel rod, and a channel box for a nuclear-reactor fuel assembly which does not form any gap between the channel box and members containing burnable poison in the channel box and in which the burnable poison does not directly contact with reactor water.
摘要翻译: 用于含有钚的核反应堆燃料组件(MOX燃料组件)的通道箱,能够适当地控制过量反应性而不将中子吸收剂或可燃毒物混入燃料棒中,以及用于核反应堆燃料组件的通道箱 通道箱和通道箱中含有可燃毒物的物质之间不会形成任何间隙,其中可燃毒物不直接与反应堆水接触。
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公开(公告)号:US20090008168A1
公开(公告)日:2009-01-08
申请号:US12224383
申请日:2007-03-02
申请人: Akihiro Yamanaka , Kensuke Kamichi , Hideaki Goda , Masaya Yamamoto , Yoichi Tajima , Takeshi Aoki , Kazuomi Okasaka
发明人: Akihiro Yamanaka , Kensuke Kamichi , Hideaki Goda , Masaya Yamamoto , Yoichi Tajima , Takeshi Aoki , Kazuomi Okasaka
CPC分类号: B60W20/30 , B60K6/445 , B60L11/123 , B60L11/14 , B60L2220/14 , B60L2240/423 , B60L2240/486 , B60W10/06 , B60W10/08 , B60W10/10 , B60W20/00 , B60W2540/10 , B60W2710/0666 , B60W2710/083 , B60W2710/105 , F16H2061/6603 , Y02T10/56 , Y02T10/6217 , Y02T10/6239 , Y02T10/6286 , Y02T10/642 , Y02T10/7077 , Y10S903/93 , Y10S903/945 , Y10T477/26
摘要: When a gear of a transmission for transmitting torque of a motor to a drive shaft is shifted while an accelerator is off or an accelerator pedal is slightly stepped on, an upper limit rotation speed is set using a fluctuation rate of a value smaller than a value when the gear is not shifted, a target rotation speed of an engine is set using this upper limit rotation speed, and control is carried out so that an engine is operated at the target rotation speed. By this arrangement, when the accelerator pedal is stepped on and a large torque demand is demanded, rise of the engine rotation speed is restricted, a portion used for raising the rotation speed in power outputted from the engine is made smaller, and a larger power can be outputted to the drive shaft.
摘要翻译: 当加速器关闭或加速踏板稍微踩踏时,用于将电动机的扭矩传递到驱动轴的变速器的齿轮移动时,使用小于值的变动率来设定上限转速 当齿轮没有移动时,使用该上限转速设定发动机的目标转速,并且执行控制以使发动机以目标转速运转。 通过这种布置,当加速踏板被踩踏并且需要大的扭矩需求时,发动机转速的上升被限制,用于提高从发动机输出的动力的转速的部分变小,并且更大的功率 可以输出到驱动轴。
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