公开(公告)号：US06810099B2

公开(公告)日：2004-10-26

申请号：US09978174

申请日：2001-10-17

申请人： Mikihide Nakamaru ,  Hideaki Heki ,  Takehiko Saito ,  Kouji Hiraiwa ,  Tadashi Narabayashi ,  Satoru Oomizu ,  Tsuyoshi Shimoda ,  Kenji Arai ,  Shinichi Morooka ,  Seijiro Suzuki

发明人： Mikihide Nakamaru ,  Hideaki Heki ,  Takehiko Saito ,  Kouji Hiraiwa ,  Tadashi Narabayashi ,  Satoru Oomizu ,  Tsuyoshi Shimoda ,  Kenji Arai ,  Shinichi Morooka ,  Seijiro Suzuki

IPC分类号： G21C900

CPC分类号： G21C1/084 ,  G21C7/08 ,  G21C9/00 ,  G21C15/18 ,  G21Y2002/301 ,  G21Y2002/302 ,  G21Y2002/304 ,  G21Y2002/50 ,  G21Y2004/30 ,  G21Y2004/40 ,  Y02E30/31 ,  Y02E30/39

摘要： The present invention provides a boiling water reactor nuclear power plant in which a reactor core support plate, upper grid plate, and a reactor core consisting of fuel assemblies supported by these plates are provided in the inner base portion of a nuclear reactor pressure vessel. Control rod guide tubes and a reactor core shroud are positioned over the upper grid plate, and a control rod drive mechanism is provided further above same, whereby the control rods can be inserted from above the reactor core, and natural circulation of cooling water inside the reactor can be achieved by means of a chimney effect of the control rod guide tubes. According to the above structure, there can be provided a compact and economical nuclear power plant.

摘要翻译： 本发明提供了一种沸水反应堆核电站，其中反应堆堆芯支撑板，上格栅板和由这些板支撑的燃料组件组成的反应堆堆芯设置在核反应堆压力容器的内部基部。 控制杆引导管和反应堆芯护罩位于上格栅上方，控制棒驱动机构设置在其上方，控制杆可从反应堆芯上方插入，并将冷却水自然循环 反应器可以通过控制杆导管的烟囱效应来实现。 根据上述结构，可以提供一个紧凑经济的核电厂。

公开(公告)号：US06925138B2

公开(公告)日：2005-08-02

申请号：US09978308

申请日：2001-10-17

申请人： Mikihide Nakamaru ,  Hideaki Heki ,  Takehiko Saito ,  Kouji Hiraiwa ,  Tadashi Narabayashi ,  Satoru Oomizu ,  Tsuyoshi Shimoda ,  Kenji Arai ,  Shinichi Morooka ,  Seijiro Suzuki

发明人： Mikihide Nakamaru ,  Hideaki Heki ,  Takehiko Saito ,  Kouji Hiraiwa ,  Tadashi Narabayashi ,  Satoru Oomizu ,  Tsuyoshi Shimoda ,  Kenji Arai ,  Shinichi Morooka ,  Seijiro Suzuki

IPC分类号： G21C1/08 ,  G21C3/328 ,  G21C5/00 ,  G21C7/04 ,  G21C7/113 ,  G21C7/14 ,  G21C7/24 ,  G21C7/27 ,  G21C1/04

CPC分类号： G21C5/00 ,  G21C1/084 ,  G21C7/04 ,  G21C7/113 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2002/40 ,  G21Y2004/30 ,  Y02E30/31 ,  Y02E30/39

摘要： The present invention is to provide a reactor core that allows a nuclear plant to continuously operate for a long term period, for example 15 years or longer, without requiring any fuel exchange, reduces the duration and number of maintenance steps involved in regular plant inspections, markedly improves plant availability and economic efficiency, and is effective in terms of nuclear nonproliferation.A plurality of fuel assemblies 103, themselves obtained by arranging fuel rods 100 and water rods 107 in square lattices, are arranged in a square lattice at a certain pitch. The blades 102a of a cross-shaped (cruciform) control rod 102 in a cross section are inserted into four adjacent spaces formed by four fuel assemblies 100 facing each other. A value of 0.06 cm−1 or greater is selected for the ratio (B/S) of the width (B) of each blade on the cruciform control rod 102 and the surface (S) of the fuel lattice defined by the surface area of a square whose side is equal to the pitch between the fuel assemblies 103.

摘要翻译： 本发明提供一种反应堆堆芯，其允许核电厂连续运行长达15年或更长的时间，而不需要任何燃料更换，减少常规工厂检查所涉及的维护步骤的持续时间和数量， 显着提高了植物的可利用性和经济效益，在核不扩散方面有效。 通过将燃料棒100和水杆107排列成方形格子而获得的多个燃料组件103以一定的间距排列成方格。 十字形（十字形）控制杆102的横截面的叶片102a插入由彼此面对的四个燃料组件100形成的四个相邻的空间中。 对于十字形控制杆102上的每个叶片的宽度（B）和燃料表面（S）的比（B / S），选择0.06cm -1以上的值 其方格由侧面等于燃料组件103之间的间距的正方形的面积限定。