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公开(公告)号：US4876060A
公开(公告)日：1989-10-24
申请号：US68190
申请日：1987-06-30
IPC分类号： G21C7/113
CPC分类号： G21C7/113 , G21Y2002/103 , G21Y2002/30 , G21Y2002/301 , G21Y2004/10 , G21Y2004/30 , Y02E30/31 , Y02E30/39
摘要： In the field of commercial nuclear reactors, there is an increasing demand for long-life control blades in order to meet the requirements of higher economy and reduction in the disposal of radioactive wastes. A control blade proposed by the invention stands a long use by virtue of the use of a long-life neutron absorber which is typically made of hafnium. Despite the use of hafnium which has a large specific weight (13.3 g/cm.sup.3), the size, shape and weight of the control blade are substantially the same as those of convertional control blades which employ boron carbides B.sub.4 C as the neutron absorber, so that the control blade can be back-fitted in existing boiling water reactors without difficulty. The control blade of this invention is a flux-trap-type control blade in which long-life neutron absorber plates or sheets are arranged to oppose each other in the thicknesswise direction of the wing within the sheath plate such that a water gap is preserved between the opposing neutron absorber plates, so that the weight of the hafnium, which occupies most part of the total weight of the control blade, is reduced by an amount corresponding to the volume of the water gap. The thickness of the neutron absorber plates or sheets is increased at the upper portion of the control blade where the neutron exposure is specifically high and where a large neutron absorption power or capacity is required for ensuring a sufficient reactor shut-down margin, while the thickness is reduced in other portions so as to increase the size of the water gap. In consequence, the weight of the control blade incorporating heavy hafnium as the neutron absorber is reduced almost to the same level as that of ordinary control blades, without being accompanied by any reduction in the reactivity worth.
摘要翻译： 在商业核反应堆领域，长寿命控制叶片的需求不断增加，以满足高经济性和放射性废物处理量的减少。 本发明提出的控制叶片由于使用通常由铪制成的长寿命中子吸收器而长期使用。 尽管使用具有大比重（13.3g / cm 3）的铪，但控制叶片的尺寸，形状和重量与使用硼碳化物B4C作为中子吸收体的转化控制叶片的尺寸，形状和重量基本相同，因此 控制叶片可以毫无困难地回装在现有的沸水反应堆中。 本发明的控制叶片是其中长寿命中子吸收器板或片布置成在鞘板内的机翼的厚度方向上彼此相对的通量捕获型控制叶片，使得在 相反的中子吸收器板，使得占据对照叶片总重量的大部分的铪的重量减少相应于水隙体积的量。 中子吸收板或薄板的厚度在控制叶片的上部增加，其中中子暴露特别高，并且需要大的中子吸收能力或容量以确保足够的反应堆停机裕度，而厚度 在其他部分被减少以增加水隙的尺寸。 因此，将重铪作为中子吸收剂的控制叶片的重量降低到几乎与普通对照叶片相同的水平，而不伴随着反应性价值的降低。
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公开(公告)号：US5180544A
公开(公告)日：1993-01-19
申请号：US752218
申请日：1991-08-21
IPC分类号： G21C7/113
CPC分类号： G21C7/113 , G21Y2002/103 , G21Y2002/30 , G21Y2002/301 , G21Y2004/10 , G21Y2004/30 , Y02E30/31 , Y02E30/39
摘要： In the field of commercial nuclear reactors, there is an increasing demand for long-life control blades in order to meet the requirements of higher economy and reduction in the disposal of radioactive wastes. A control blade proposed by the invention stands a long use by virtue of the use of a long-life neutron absorber which is typically made of hafnium. Despite the use of hafnium which has a large specific weight (13.3 g/cm.sup.3), the size, shape and weight of the control blade are substantially the same as those of conventional control blades which employ boron carbides B.sub.4 C as the neutron absorber, so that the control blade can be back-fitted in existing boiling water reactors without difficulty. The control blade of this invention is a flux-trap-type control blade in which long-life neutron absorber plates or sheets are arranged to oppose each other in the thicknesswise direction of the wing within the sheath plate such that a water gap is preserved between the opposing neutron absorber plates, so that the weight of the hafnium, which occupies most part of the total weight of the control blade, is reduced by an amount corresponding to the volume of the water gap. The thickness of the neutron absorber plates or sheets is increased at the upper portion of the control blade where the neutron exposure is specifically high and where a large neutron absorption power or capacity is required for ensuring a sufficient reactor shut-down margin, while the thickness is reduced in other portions so as to increase the size of the water gap. In consequence, the weight of the control blade incorporating heavy hafnium as the neutron absorber is reduced almost to the same level as that of ordinary control blades, without being accompanied by any reduction in the reactivity worth.
摘要翻译： 在商业核反应堆领域，长寿命控制叶片的需求不断增加，以满足高经济性和放射性废物处理量的减少。 本发明提出的控制叶片由于使用通常由铪制成的长寿命中子吸收器而长期使用。 尽管使用具有大比重（13.3g / cm 3）的铪，但是控制叶片的尺寸，形状和重量与使用硼碳化物B4C作为中子吸收体的常规控制叶片的尺寸，形状和重量基本相同，使得 控制叶片可以毫无困难地回装在现有的沸水反应堆中。 本发明的控制叶片是其中长寿命中子吸收器板或片布置成在鞘板内的机翼的厚度方向上彼此相对的通量捕获型控制叶片，使得在 相反的中子吸收器板，使得占据对照叶片总重量的大部分的铪的重量减少相应于水隙体积的量。 中子吸收板或薄板的厚度在控制叶片的上部增加，其中中子暴露特别高，并且需要大的中子吸收能力或容量以确保足够的反应堆停机裕度，而厚度 在其他部分被减少以增加水隙的尺寸。 因此，将重铪作为中子吸收剂的控制叶片的重量降低到几乎与普通对照叶片相同的水平，而不伴随着反应性价值的降低。
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公开(公告)号：US5009840A
公开(公告)日：1991-04-23
申请号：US299238
申请日：1989-01-19
申请人： Makoto Ueda , Yoshihira Ando , Shungo Sakurai , Ritsuo Yoshioka
发明人： Makoto Ueda , Yoshihira Ando , Shungo Sakurai , Ritsuo Yoshioka
CPC分类号： G21C3/326 , G21C3/322 , G21C7/04 , G21Y2002/201 , G21Y2004/10 , G21Y2004/30 , G21Y2004/302 , Y02E30/38 , Y02E30/39
摘要： A fuel assembly for a nuclear reactor comprising a number of fuel rods arranged in a regular fashion in a channel box which is surrounded by water gap in a reactor core. Some of fuel rods disposed at portions facing the water gap through which no control blade is inserted or drawn out, have atomic number densities of fissionable material contained in the fuel rods. The atomic number density of each of these fuel rods is made smaller than that of the fuel rod disposed in the fuel assembly at portions other than the portions referred to above.
摘要翻译： 一种用于核反应堆的燃料组件，包括以规则方式布置在由反应堆芯中的水隙包围的通道箱中的多个燃料棒。 设置在没有控制叶片被插入或拉出的面向水隙的部分的一些燃料棒具有包含在燃料棒中的可裂变材料的原子数密度。 这些燃料棒中的每一个的原子序数密度比在上述部分以外的部分设置在燃料组件中的燃料棒的原子数密度小。
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公开(公告)号：US5347550A
公开(公告)日：1994-09-13
申请号：US34670
申请日：1993-03-22
CPC分类号： G21C7/04 , G21C3/18 , G21C5/02 , G21Y2002/201 , G21Y2004/10 , G21Y2004/30 , Y02E30/39
摘要： A core of a light-water reactor comprises a plurality of fuel assemblies each including a number of fuel rods. The fuel rod is provided with at least one area interposed between fuel areas in a clad of the fuel rod. The interposed area contains extremely reduced or substantially no fissile nuclide. At least two areas or layers with high enrichment of the fissile nuclide are formed in the axial direction of the reactor by the location of the interposed areas throughout the whole fuel assemblies arranged in the light-water reactor core.
摘要翻译： 轻水反应堆的核心包括多个燃料组件，每个燃料组件包括多个燃料棒。 燃料棒设置有插入在燃料棒的包层中的燃料区域之间的至少一个区域。 插入区域包含极度减少或基本上不含裂变核素。 通过布置在轻水反应堆芯中的整个燃料组件中的插入区域的位置，在反应器的轴向方向上形成具有高富集裂变核素的至少两个区域或层。
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公开(公告)号：US5068082A
公开(公告)日：1991-11-26
申请号：US219346
申请日：1988-07-15
申请人： Makoto Ueda , Koichi Sakurada , Shungo Sakurai , Ritsuo Yoshioka , Shunsuke Ogiya , Mamoru Nagano
发明人： Makoto Ueda , Koichi Sakurada , Shungo Sakurai , Ritsuo Yoshioka , Shunsuke Ogiya , Mamoru Nagano
摘要： A fuel assembly for a nuclear reactor includes a number of fuel rods filled with a fuel material. A plurality of fuel rods have a partial effective fuel area filled with a fuel material and has a portion in which enrichment of a fissile nuclide is significantly reduced or the fissile nuclide does not exist at all on an axial level including a reactor shut-down zone at which subcriticality becomes small during a reactor operation period. The other fuel rods are filled with the fuel material throughout the entire axial length thereof. The first mentioned fuel rod may be provided with a partially interposed zone or may be constructed by a fuel rod having a length shorter than that of the other fuel rod. The tube means may be arranged in the fuel assembly so as to pass the moderator therethrough.
摘要翻译： 用于核反应堆的燃料组件包括多个充满燃料的燃料棒。 多个燃料棒具有填充有燃料的部分有效的燃料区域，并且具有显着减少易裂变核素的富集的部分或者在包括反应堆关闭区域的轴向上完全不存在易裂变核素 在反应堆运行期间亚临界度变小。 其他燃料棒在其整个轴向长度处填充有燃料材料。 第一个提到的燃料棒可以设置有部分插入的区域，或者可以由具有比其他燃料棒的长度短的燃料棒构成。 管装置可以布置在燃料组件中以便使调节剂通过。
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公开(公告)号：US5034185A
公开(公告)日：1991-07-23
申请号：US397758
申请日：1989-02-08
申请人： Makoto Ueda , Ritsuo Yoshioka , Tomonobu Sakuranaga , Yuichi Motora , Shigenori Shiga , Munenari Yamamoto
发明人： Makoto Ueda , Ritsuo Yoshioka , Tomonobu Sakuranaga , Yuichi Motora , Shigenori Shiga , Munenari Yamamoto
CPC分类号： G21C7/113 , G21C7/24 , G21Y2002/206 , G21Y2002/30 , G21Y2004/10 , G21Y2004/30 , Y02E30/39
摘要： A control blade for a nuclear reactor having inserted upper end structural members and inserted lower end structural members connected to a plurality of wings each in the form of a generally rectangular plate having an longitudinal axis extending in the longitudinal direction of the control blade, the wing being disposed to form a cross-shaped section of the control blade. The wings and the structural members are connected to and supported on a central connection member. Each wing or a sheath member formed within each wing is formed from a diluted alloy obtained by diluting a long-lived neutron absorber such as hafnium with a diluent such as zirconium or titanium. A plurality of neutron absorber housing holes are formed in the diluted alloy section. Specifically, if the housing holes are formed to extend in the widthwise direction of the wing, the sectional area of each housing hole formed in a portion of the control blade corresponding to the region where the subcriticality in the reactor core becomes smaller after the reactor has been shut down by fully inserting the control blade into the core is larger than that of housing holes formed in the other regions. A structure having a means to cope with swelling of the neutron absorber can be applied to the former region.
摘要翻译： 一种用于核反应堆的控制叶片，其具有插入的上端结构构件和连接到多个翅片的插入的下端结构构件，每个翼片具有沿着控制叶片的纵向方向延伸的纵向轴线的大致矩形板的形式，翼 被设置成形成控制叶片的十字形部分。 翼和结构构件连接并支撑在中心连接构件上。 每个机翼中形成的每个翼或护套构件由稀释的合金形成，该稀释合金通过用诸如锆或钛的稀释剂稀释长寿命的中子吸收剂例如铪。 在稀释的合金部分中形成多个中子吸收器容纳孔。 具体来说，如果容纳孔形成为在翼的宽度方向上延伸，则形成在控制叶片的一部分中的每个壳体孔的截面面积对应于反应器堆中的副临界度变小后的区域 通过将控制刀片完全插入到芯中被关闭，大于其他区域中形成的壳体孔的尺寸。 具有应对中子吸收体溶胀的手段的结构可以应用于前一个区域。
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公开(公告)号：US6088420A
公开(公告)日：2000-07-11
申请号：US70909
申请日：1998-05-04
申请人： Tsugio Yokoyama , Ritsuo Yoshioka , Yasushi Tsuboi
发明人： Tsugio Yokoyama , Ritsuo Yoshioka , Yasushi Tsuboi
IPC分类号： G21C5/00 , G21C1/00 , G21C3/07 , G21C3/30 , G21C3/324 , G21C3/326 , G21C3/328 , G21C5/18 , G21C7/00 , G21C7/103 , G21C3/32 , G21C3/34
CPC分类号： G21C1/00 , G21C3/326 , G21C5/18 , G21C7/103 , G21Y2002/201 , G21Y2002/304 , G21Y2002/50 , G21Y2004/101 , G21Y2004/30 , Y02E30/31 , Y02E30/32 , Y02E30/38 , Y02E30/39
摘要： In a reactor core, there is charged a number of fuel assemblies composed of a channel box and a fuel bundle disposed therein, in which fuel rods adjacent to each other are arranged so as to provide a triangular shape and a ratio of a coolant channel cross section to a fuel cross section is set to be 1 or less.
摘要翻译： 在反应堆堆芯中，装有多个由通道箱和设置在其中的燃料束组成的燃料组件，其中彼此相邻的燃料棒被布置成提供三角形状，并且冷却剂通道交叉 将燃料截面的截面设定为1以下。
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公开(公告)号：US5377247A
公开(公告)日：1994-12-27
申请号：US42443
申请日：1993-02-19
申请人： Ritsuo Yoshioka , Takeshi Seino , Toru Yamamoto , Yasushi Hirano
发明人： Ritsuo Yoshioka , Takeshi Seino , Toru Yamamoto , Yasushi Hirano
摘要： A nuclear reactor core is provided with a fuel assembly which comprises channel boxes respectively separated with spaces into which control rods are arranged and a plurality of fuel rods arranged in the channel box, at least a part of the fuel rods being charged with uranium-plutonium mixture fuel and an enrichment of U-235 or a concentration of plutonium, or both being distributed in an axial direction of the fuel rods. The concentration of a burnable poison packed in the fuel rod is distributed in the axial direction of the fuel assembly. The ratio of the occupying region of a moderator of the fuel assembly is increased with respect to the fuel occupying region. The number of the fuel rods containing the burnable poison is variously changed with respect to the total number of the fuel rods and the arranging mode thereof is also varied with the concentration thereof.
摘要翻译： 核反应堆堆芯设置有燃料组件，燃料组件包括分别与设置有控制棒的空间分开的通道箱和布置在通道箱中的多个燃料棒，至少一部分燃料棒装有铀 - 钚 混合燃料和U-235的浓缩或浓度的钚，或两者分布在燃料棒的轴向方向上。 装在燃料棒中的可燃毒物的浓度分布在燃料组件的轴向上。 燃料组件的调节剂的占据区域的比例相对于燃料占据区域增加。 含有可燃毒物的燃料棒的数量相对于燃料棒的总数而有各种变化，其排列方式也随其浓度而变化。
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9.发明授权Price and risk evaluation system for financial product or its derivatives, dealing system, recording medium storing a price and risk evaluation program, and recording medium storing a dealing program 有权金融产品或其衍生工具的价格和风险评估系统，交易系统，存储价格和风险评估程序的记录介质，以及存储交易程序的记录介质公开(公告)号：US07865418B2
公开(公告)日：2011-01-04
申请号：US11733057
申请日：2007-04-09
申请人： Yuji Uenohara , Ritsuo Yoshioka , Motohiko Onishi , Takahiro Tatsumi , Tadahiro Ohashi , Masatoshi Kawashima , Hiroaki Okuda
发明人： Yuji Uenohara , Ritsuo Yoshioka , Motohiko Onishi , Takahiro Tatsumi , Tadahiro Ohashi , Masatoshi Kawashima , Hiroaki Okuda
IPC分类号： G06Q40/00
摘要： A system for correctly evaluating a price distribution and a risk distribution for a financial product or its derivatives introduces a probability density function generated with a Boltzmann model at a higher accuracy than the Gaussian distribution for a probability density. The system has an initial value setup unit and an evaluation condition setup unit. Initial values include at least one of price, price change rate, and the price change direction of a financial product. The evaluation conditions include at least time steps and the number of trials. The Boltzmann model analysis unit receives the initial values and the evaluation conditions, and repeats simulations of price fluctuation, based on the Boltzmann model using a Monte Carlo method. A velocity/direction distribution setup unit supplies the probability distributions of the price, price change rate, and the price change direction for the financial product to the Boltzmann model analysis unit. A random number generator for a Monte Carlo method employed in the analysis by the Boltzmann model, and an output unit displays the analysis result. A dealing system applies the financial Boltzmann model to option pricing, and reproduces the characteristics of Leptokurcity and Fat-tail by linear Boltzmann equation in order to define risk-neutral and unique probability measures. Consequently, option prices can be evaluated in a risk-neutral and unique manner, taking into account Leptokurcity and Fat-tail of a price change distribution.
摘要翻译： 用于正确评估金融产品或其衍生物的价格分布和风险分布的系统使用玻尔兹曼模型生成的概率密度函数以高于概率密度的高斯分布的精度引入。 系统具有初始值设定单元和评价条件设定单元。 初始值包括金融产品的价格，价格变动率和价格变动方向中的至少一个。 评估条件至少包括时间步骤和试验次数。 Boltzmann模型分析单元接收初始值和评估条件，并使用Monte Carlo方法基于Boltzmann模型重复价格波动的模拟。 速度/方向分布设置单元将金融产品的价格，价格变化率和价格变化方向的概率分布提供给玻尔兹曼模型分析单元。 用于通过玻尔兹曼模型分析的蒙特卡罗方法的随机数发生器和输出单元显示分析结果。 交易系统将金融玻尔兹曼模型应用于期权定价，并通过线性Boltzmann方程再现Leptokurcity和Fat-tail的特征，以定义风险中立和独特的概率测度。 因此，期权价格可以以风险中立和独特的方式进行评估，同时考虑到价格变动分配的Leptokurcity和Fat-tail。
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10.发明授权System for evaluating price risk of financial product or its financial derivative, dealing system and recorded medium 失效金融产品或其金融衍生工具，交易系统和记录媒体价格风险评估系统公开(公告)号：US07552076B1
公开(公告)日：2009-06-23
申请号：US09807963
申请日：2000-08-25
申请人： Yuji Uenohara , Ritsuo Yoshioka , Motohiko Onishi , Takahiro Tatsumi , Tadahiro Ohashi , Masatoshi Kawashima , Hiroaki Okuda
发明人： Yuji Uenohara , Ritsuo Yoshioka , Motohiko Onishi , Takahiro Tatsumi , Tadahiro Ohashi , Masatoshi Kawashima , Hiroaki Okuda
IPC分类号： G06Q40/00
摘要： A system for correctly evaluating price distribution and risk distribution for a financial product or its derivatives introduces a probability density function generated with a Boltzmann model at a higher accuracy than the Gaussian distribution for a probability density. The system has an initial value setup unit and an evaluation condition setup unit. Initial values include at least one of price, price change rate, and price change direction of a financial product. The evaluation conditions include at least time steps and a number of trials. A Boltzmann model analysis unit receives the initial values and the evaluation conditions, and repeats simulations of price fluctuation, based on the Boltzmann model using a Monte Carlo method. A velocity/direction distribution setup unit supplies probability distributions of the price, price change rate, and price change direction for the financial product to the Boltzmann model analysis unit. A random number generator for a Monte Carlo method is employed in the analysis by the Boltzmann model, and an output unit displays the analysis result. A dealing system applies the financial Boltzmann model to option pricing, and reproduces the characteristics of Leptokurcity and Fat-tail by a linear Boltzmann equation to define risk-neutral and unique probability measures. Consequently, option prices can be evaluated in a risk-neutral and unique manner, taking into account Leptokurcity and Fat-tail of a price change distribution.
摘要翻译： 正确评估金融产品或其衍生物的价格分布和风险分配的系统以概率密度高于高斯分布的准则，引入了用玻尔兹曼模型生成的概率密度函数。 系统具有初始值设定单元和评价条件设定单元。 初始值包括金融产品的价格，价格变动率和价格变动方向中的至少一个。 评估条件至少包括时间步骤和一些试验。 玻尔兹曼模型分析单元接收初始值和评估条件，并且基于使用蒙特卡罗方法的波尔兹曼模型重复价格波动的模拟。 速度/方向分布设置单元将金融产品的价格，价格变化率和价格变化方向的概率分布提供给玻尔兹曼模型分析单元。 在Boltzmann模型的分析中采用蒙特卡罗方法的随机数发生器，输出单元显示分析结果。 交易系统将金融玻尔兹曼模型应用于期权定价，并通过线性玻尔兹曼方程再现了Leptokurcity和Fat-tail的特征，以定义风险中立和独特的概率测度。 因此，期权价格可以以风险中立和独特的方式进行评估，同时考虑到价格变动分配的Leptokurcity和Fat-tail。
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