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公开(公告)号：US08817941B2
公开(公告)日：2014-08-26
申请号：US13044909
申请日：2011-03-10
申请人： Takashi Sato , Kazunori Hashimoto , Hirohide Oikawa , Yasunobu Fujiki , Makoto Akinaga , Hisaki Sato
发明人： Takashi Sato , Kazunori Hashimoto , Hirohide Oikawa , Yasunobu Fujiki , Makoto Akinaga , Hisaki Sato
摘要： According to an embodiment, a pressurized water reactor plant has a primary system which includes: a reactor vessel for housing a reactor core which is cooled by a primary coolant, a single steam generator, a hot leg pipe for connecting the reactor vessel and the steam generator, cold leg pipes, at least two primary coolant pumps, and a pressurizer for pressurizing the primary coolant pressure boundary in which the primary coolant flows. The plant also has: a passive cooling and depressurization system which is a primary depressurization means for equalizing the primary system pressure to the secondary system pressure at the time of a tube rupture accident of the steam generator, and a reactor containment vessel containing the primary system and cooling the primary system by air cooling. Thus, a compact pressurized water rector with high economic efficiency, safety, and reliability can be provided.
摘要翻译： 根据实施例，压水反应堆设备具有主要系统，其包括：用于容纳由主冷却剂冷却的反应堆堆芯的反应堆容器，单个蒸汽发生器，用于连接反应堆容器的热腿管和蒸汽 发电机，冷腿管，至少两个一次冷却剂泵，以及用于对初级冷却剂流动的主冷却剂压力边界加压的加压器。 该设备还具有：被动冷却和减压系统，其是在蒸汽发生器的管道破裂事故发生时使初级系统压力与二次系统压力相等的主要减压装置，以及包含主系统的反应堆安全壳 并通过空气冷却冷却主系统。 因此，可以提供具有高经济性，安全性和可靠性的紧凑型压水机。
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2.发明授权公开(公告)号：US08559583B1
公开(公告)日：2013-10-15
申请号：US12394576
申请日：2009-02-27
申请人： Takashi Sato , Masanori Ino , Yasunobu Fujiki , Kazunori Hashimoto , Junichiro Otonari , Hisaki Sato , Naoko Matsunaga
发明人： Takashi Sato , Masanori Ino , Yasunobu Fujiki , Kazunori Hashimoto , Junichiro Otonari , Hisaki Sato , Naoko Matsunaga
IPC分类号： G21C9/00
CPC分类号： G21C9/004 , G21C1/086 , G21C15/18 , G21Y2002/304 , G21Y2004/30 , Y02E30/32
摘要： A passive cooling and depressurization system for a pressurized water nuclear plant is provided with a cooling water pool, a steam supply piping, a heat exchanger, a steam supply valve, a coolant return pipe and an outlet valve. The steam supply piping extends from the gas phase of the pressurizer. The heat exchanger exchanges heat between water stored in the cooling water pool and steam flowing through the steam supply piping. The steam supply valve is equipped on the steam supply piping. The coolant return pipe extends from the heat exchanger to a liquid phase of the reactor pressure boundary. The outlet valve is equipped on the coolant return pipe.
摘要翻译： 用于加压水核电厂的被动冷却和减压系统设置有冷却水池，蒸汽供应管道，热交换器，蒸汽供应阀，冷却剂回流管和出口阀。 蒸汽供应管道从加压器的气相延伸。 热交换器在存储在冷却水池中的水和通过蒸汽供应管道的蒸汽之间交换热量。 蒸汽供应阀配备在蒸汽供应管道上。 冷却剂回流管从热交换器延伸到反应堆压力边界的液相。 排气阀装在冷却液回流管上。
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3.发明申请公开(公告)号：US20130259183A1
公开(公告)日：2013-10-03
申请号：US12394576
申请日：2009-02-27
申请人： Takashi Sato , Masanori Ino , Yasunobu Fujiki , Kazunori Hashimoto , Junichiro Otonari , Hisaki Sato , Naoko Matsunaga
发明人： Takashi Sato , Masanori Ino , Yasunobu Fujiki , Kazunori Hashimoto , Junichiro Otonari , Hisaki Sato , Naoko Matsunaga
IPC分类号： G21C9/004
CPC分类号： G21C9/004 , G21C1/086 , G21C15/18 , G21Y2002/304 , G21Y2004/30 , Y02E30/32
摘要： A passive cooling and depressurization system for a pressurized water nuclear plant is provided with a cooling water pool, a steam supply piping, a heat exchanger, a steam supply valve, a coolant return pipe and an outlet valve. The steam supply piping extends from the gas phase of the pressurizer. The heat exchanger exchanges heat between water stored in the cooling water pool and steam flowing through the steam supply piping. The steam supply valve is equipped on the steam supply piping. The coolant return pipe extends from the heat exchanger to a liquid phase of the reactor pressure boundary. The outlet valve is equipped on the coolant return pipe.
摘要翻译： 用于加压水核电厂的被动冷却和减压系统设置有冷却水池，蒸汽供应管道，热交换器，蒸汽供应阀，冷却剂回流管和出口阀。 蒸汽供应管道从加压器的气相延伸。 热交换器在存储在冷却水池中的水和通过蒸汽供应管道的蒸汽之间交换热量。 蒸汽供应阀配备在蒸汽供应管道上。 冷却剂回流管从热交换器延伸到反应堆压力边界的液相。 排气阀装在冷却液回流管上。
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公开(公告)号：US09793015B2
公开(公告)日：2017-10-17
申请号：US12338559
申请日：2008-12-18
CPC分类号： G21C15/18 , G21C9/004 , G21C13/00 , G21Y2002/304 , G21Y2004/30 , Y02E30/32
摘要： A containment vessel for containing a reactor pressure vessel, a reactor core, and a steam generator of a pressurized water reactor includes a main body equipped with a polar crane, a diaphragm set above the polar crane that partitions the main body, before and after a loss-of-coolant accident (LOCA), into an upper vessel including a dome part having an open space and a lower vessel isolated from the upper vessel, a pressure suppression chamber including a suppression pool that stores water and a gas phase in communication with the open space, a LOCA vent pipe connecting the suppression pool to the lower vessel, and a vacuum breaker that equalizes pressure by allowing gas flow from the upper to the lower vessel when a pressure difference between the upper and lower vessels exceeds a preset value. The lower vessel contains all equipment and piping constituting a reactor pressure boundary.
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5.发明授权公开(公告)号：US07983376B2
公开(公告)日：2011-07-19
申请号：US12828798
申请日：2010-07-01
申请人： Yoshihiro Kojima , Takashi Sato , Hirohide Oikawa
发明人： Yoshihiro Kojima , Takashi Sato , Hirohide Oikawa
IPC分类号： G21C9/00
摘要： A boiling water nuclear reactor comprises: a reactor containment vessel including a dry well and a wet well; a vent pipe connecting the dry well and the pressure suppression pool; a gravity-driven water injection pool to hold boric acid aqueous solution; an emergency core water-injection piping system for causing the boric acid aqueous solution in the gravity-driven water injection pool to fall so as to be injected into the reactor pressure vessel in case of reactor accident; a static containment vessel cooling system pool; a static containment vessel cooling system heat exchanger; a dry well connection pipe connecting an upper part of the static containment vessel cooling system heat exchanger and the dry well; and a gas vent pipe for discharging noncondensible gas in the static containment vessel cooling system heat exchanger into the inside of the pressure suppression pool.
摘要翻译： 沸水核反应堆包括：包括干井和湿井的反应堆安全壳; 连通干井和压力池的排气管; 用重力驱动的注水池来保持硼酸水溶液; 用于使重力驱动注水池中的硼酸水溶液落下以便在反应堆事故发生时被注入反应堆压力容器的应急核心注水管道系统; 静态容器冷却系统池; 静态容器冷却系统热交换器; 连接静电容器冷却系统热交换器的上部和干井的干井连接管; 以及用于将静电容器冷却系统热交换器中的不可冷凝气体排放到压力抑制池的内部的排气管。
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公开(公告)号：US07835482B2
公开(公告)日：2010-11-16
申请号：US11033272
申请日：2005-01-12
申请人： Takashi Sato , Hirohide Oikawa
发明人： Takashi Sato , Hirohide Oikawa
IPC分类号： G21C9/00
摘要： An emergency core cooling system comprises first and second safety divisions for an active emergency core cooling system. Each of the first and second safety divisions is provided with a high-pressure core cooling system and a low-pressure core cooling system, which also acts as a residual heat removal system.
摘要翻译： 应急核心冷却系统包括用于主动应急核心冷却系统的第一和第二安全部门。 第一和第二安全部分中的每一个都设置有高压芯冷却系统和低压芯冷却系统，其还用作残余散热系统。
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7.发明授权Core catcher, manufacturing method thereof, reactor containment vessel and manufacturing method thereof 有权核心捕手及其制造方法，反应堆安全壳及其制造方法公开(公告)号：US08358732B2
公开(公告)日：2013-01-22
申请号：US12195067
申请日：2008-08-20
申请人： Takashi Sato , Ryoichi Hamazaki , Mika Tahara , Yoshihiro Kojima , Hirohide Oikawa , Tomohisa Kurita , Seiichi Yokobori , Yuka Suzuki
发明人： Takashi Sato , Ryoichi Hamazaki , Mika Tahara , Yoshihiro Kojima , Hirohide Oikawa , Tomohisa Kurita , Seiichi Yokobori , Yuka Suzuki
IPC分类号： G21C9/00
CPC分类号： G21C9/016 , G21C21/00 , G21Y2002/201 , G21Y2004/30 , Y02E30/40
摘要： Core debris generated during a molten reactor core in a reactor containment vessel penetrating the reactor containment vessel is configured to be caught by a core catcher located beneath the reactor containment vessel which has a main body having first stage cooling water channels and second stage surrounded by cooling fins extending radially. The number of the second stage cooling channels is larger than that of the first stage cooling channels. Cooling water is supplied from a cooling water injection opening and distributed to the first cooling water channels at a distributor. An intermediate header is formed between the first and the second cooling water channels, and the cooling water is distributed to the second cooling water channels uniformly.
摘要翻译： 穿过反应堆容纳容器的反应堆容纳容器内的熔融反应堆核心期间产生的核心碎屑被构造成由位于反应堆容纳容器下方的芯捕获器捕获，该堆芯主体具有第一级冷却水通道，第二级由冷却 翅片沿径向延伸。 第二级冷却通道的数量大于第一级冷却通道的数量。 冷却水从冷却水注入口供给，并在分配器处分配到第一冷却水通道。 在第一和第二冷却水通道之间形成中间集管，并且冷却水均匀地分配到第二冷却水通道。
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8.发明申请公开(公告)号：US20090060112A1
公开(公告)日：2009-03-05
申请号：US12056813
申请日：2008-03-27
申请人： Yoshihiro KOJIMA , Takashi Sato , Hirohide Oikawa
发明人： Yoshihiro KOJIMA , Takashi Sato , Hirohide Oikawa
摘要： A boiling water nuclear reactor comprises: a reactor containment vessel including a dry well and a wet well; a vent pipe connecting the dry well and the pressure suppression pool; a gravity-driven water injection pool to hold boric acid aqueous solution; an emergency core water-injection piping system for causing the boric acid aqueous solution in the gravity-driven water injection pool to fall so as to be injected into the reactor pressure vessel in case of reactor accident; a static containment vessel cooling system pool; a static containment vessel cooling system heat exchanger; a dry well connection pipe connecting an upper part of the static containment vessel cooling system heat exchanger and the dry well; and a gas vent pipe for discharging noncondensible gas in the static containment vessel cooling system heat exchanger into the inside of the pressure suppression pool.
摘要翻译： 沸水核反应堆包括：包括干井和湿井的反应堆安全壳; 连通干井和压力池的排气管; 用重力驱动的注水池来保持硼酸水溶液; 用于使重力驱动注水池中的硼酸水溶液落下以便在反应堆事故发生时被注入反应堆压力容器的应急核心注水管道系统; 静态容器冷却系统池; 静态容器冷却系统热交换器; 连接静电容器冷却系统热交换器的上部和干井的干井连接管; 以及用于将静电容器冷却系统热交换器中的不可冷凝气体排放到压力抑制池的内部的排气管。
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公开(公告)号：US20050220259A1
公开(公告)日：2005-10-06
申请号：US11033272
申请日：2005-01-12
申请人： Takashi Sato , Hirohide Oikawa
发明人： Takashi Sato , Hirohide Oikawa
摘要： An emergency core cooling system comprises first and second safety divisions for an active emergency core cooling system. Each of the first and second safety divisions is provided with a high-pressure core cooling system and a low-pressure core cooling system, which also acts as a residual heat removal system.
摘要翻译： 应急核心冷却系统包括用于主动应急核心冷却系统的第一和第二安全部门。 第一和第二安全部分中的每一个都设置有高压芯冷却系统和低压芯冷却系统，其还用作残余散热系统。
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公开(公告)号：US09443620B2
公开(公告)日：2016-09-13
申请号：US13351691
申请日：2012-01-17
申请人： Takashi Sato , Makoto Akinaga , Yoshihiro Kojima
发明人： Takashi Sato , Makoto Akinaga , Yoshihiro Kojima
摘要： According to an embodiment, a nuclear reactor containment vessel has: a primary reactor containment vessel which contains a nuclear pressure vessel; a secondary reactor containment vessel and which is disposed outside the primary reactor containment vessel which has the pressure resistant properties and the leak-tightness which are equivalent to those of the primary reactor containment vessel; an air bag which is disposed within the secondary reactor containment vessel and which, when a failure occurs in primary reactor containment vessel, expands while receiving and encapsulating a high pressure gas discharged from the inside of the primary reactor containment vessel; and a gas phase vent pipe which connects the primary reactor containment vessel and the air bag.
摘要翻译： 根据实施例，核反应堆安全壳具有：包含核压力容器的主反应堆容纳容器; 第二反应堆安全壳，并且设置在主反应堆容纳容器的外部，其具有与初级反应堆安全壳相同的耐压性和密封性; 设置在二次反应堆容纳容器内的气囊，当在一次反应堆安全壳中发生故障时，在接收并封装从一次反应堆安全壳内部排出的高压气体的同时膨胀; 以及连接主反应堆安全壳和气囊的气相通气管。
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