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1. 发明专利

JP2010032559A Reactor core of light-water reactor, and fuel assembly 有权
标题翻译：轻水反应堆的核反应堆和燃料组件
公开(公告)号：JP2010032559A
公开(公告)日：2010-02-12
申请号：JP2009262499
申请日：2009-11-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKEDA RENZO , MIWA JUNICHI , MORIYA KIMIAKI
IPC分类号： G21C5/00 , G21C3/328 , G21C3/62
CPC分类号： Y02E30/38
摘要： PROBLEM TO BE SOLVED: To provide a reactor core of a light-water reactor and a fuel assembly capable of further improving the degree of combustion by observing safety restriction conditions and increasing nuclear non-proliferation resistance properties, and capable of performing multiple-recycle and decreasing trans-uranium nuclides. SOLUTION: The reactor core flow rate of BWR is adjusted to a set reactor core flow rate determined from characteristics shown in Fig.2 according to the ratio of Pu-239 in TRU included in a new fuel assembly loaded to the reactor core. The reactor core flow rate is held at a set reactor core flow rate in the reactor core through each operation cycle of BWR. As a result, the ratio of a plurality of isotopes of TRU included by the fuel assembly when the fuel assembly is taken out of the BWR reactor core as a spent fuel assembly becomes essentially the same as the ratio of the isotopes of TRU included by the fuel assembly in the state of the new fuel assembly loaded to the BWR reactor core. The ratio of Pu-239 in TRU included in the new fuel assembly is not less than 40% and not more than 50%. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种轻水反应堆的反应堆堆芯和燃料组件，其能够通过观察安全限制条件和增加核不扩散阻力特性来进一步提高燃烧程度，并且能够执行多个反循环和减少反铀核素。解决方案：将BWR的反应堆堆芯流量调整到根据图2所示特性确定的设定的反应堆堆芯流量，根据加载到反应堆堆芯的新燃料组件中包含的TRU中的Pu-239的比例。通过BWR的每个操作循环，反应堆堆芯流量在反应堆堆芯中以设定的反应堆堆芯流速保持。结果，当将燃料组件作为乏燃料组件从BWR反应堆堆芯中取出时，由燃料组件包括的多个同步物的TRU的比率变得基本上与TRU所包含的TRU的同位素的比率相同，燃料组件处于装载到BWR反应堆堆芯的新燃料组件的状态。新燃料组件中包含的TRUU中的Pu-239比例不小于40％且不超过50％。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2004093142A Nuclear steam supply cassette and nuclear reactor of package type using it 有权
公开(公告)号：JP2004093142A
公开(公告)日：2004-03-25
申请号：JP2002250598
申请日：2002-08-29
申请人： Hitachi Ltd , Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社 , 株式会社日立製作所
发明人： USUI SHUJI , OYAMA TAKESHI , HIBI HIROMOTO , TAKIMOTO HIROKI , MAKIHARA YOSHIAKI , GOTO HIROSHI , MORIYA KIMIAKI , MATSUURA MASAYOSHI , KOYAMA KAZUTO , CHAGI MASAO
IPC分类号： G21C1/20
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide nuclear steam supply cassettes which can be used for a nuclear power plant as a non-network power source unconnected with an electric power system network and a nuclear reactor of a package type using the cassette.
SOLUTION: The nuclear steam supply cassettes 21 are laid out radially from the center in a moderator tank 31 to be filled with a moderator 30. The nuclear steam supply cassettes 21 are equipped with pressure tubes 22, steam generators 23 laid out circumferentially and extending upward from the center of inner walls of the pressure tubes 22 and in-cassette cores 24, fuel assemblies placed below the steam generators 23. The steam tubes 22 have reinforced fiber layers 26 made by wrapping carbon fiber around the outer peripheral face of pressure tube liners 25. Control rods 32 are laid out around the nuclear steam supply cassette 21 located in the center, and a water shielding tank 35 is placed outside the moderator tank 31. Pressure reducing valves 40 and emergency cooling water supply valves 38 are connected to the nuclear steam supply cassettes 21.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2009198517A Core and fuel assembly for boiling water reactor 有权
公开(公告)号：JP2009198517A
公开(公告)日：2009-09-03
申请号：JP2009136811
申请日：2009-06-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKEDA RENZO , AOYAMA TADAO , MIWA JUNICHI , IKEGAWA TOMOHIKO , MORIYA KIMIAKI
IPC分类号： G21C3/328 , G21C1/08 , G21C3/30 , G21C3/32 , G21C3/324 , G21C3/326 , G21C3/62 , G21C5/00 , G21C7/10
CPC分类号： G21C3/326 , G21C1/084 , G21C3/32 , G21C5/18 , Y02E30/31 , Y02E30/38
摘要： PROBLEM TO BE SOLVED: To provide a core and fuel assemblies which make it possible (1) to curtail construction costs of a power plant by lowering the height of the core significantly, (2) to cut down fuel cycle costs by increasing the yield of plutonium during the operation of a reactor to prolong the life of the fuel assemblies and (3) to reduce power generation costs of the plant by extending an its continuous operation period to improve its availability while maintaining thermal margin and safety at the same level as those of boiling water reactors (BWRs) which are now operating. SOLUTION: The ratio of the number of fuel assemblies loaded into the core to the radix of a control rod drive mechanism is ≥3. The fuel assemblies contain an oxide of low enriched uranium where the average enrichment of the fuel assemblies is 3 wt.% to 8 wt.% or a mixed oxide where the average fissile plutonium enrichment of the fuel assemblies is both ≥2 wt.% and less than 6 wt.%. In the BWR core of a burner type loaded with such fuel assemblies, the average weight of uranium, plutonium, minor actinides contained in a unit volume of a core domain is 2.1 to 3.4 kg/l in terms of values obtained when they are not burnt. COPYRIGHT: (C)2009,JPO&INPIT

4. 发明专利

JP2009198515A Core and fuel assembly for boiling water reactor 有权
标题翻译：锅炉水反应堆核心和燃料组件
公开(公告)号：JP2009198515A
公开(公告)日：2009-09-03
申请号：JP2009136809
申请日：2009-06-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKEDA RENZO , AOYAMA TADAO , MIWA JUNICHI , IKEGAWA TOMOHIKO , MORIYA KIMIAKI
IPC分类号： G21C3/328 , G21C1/08 , G21C3/30 , G21C3/32 , G21C3/324 , G21C3/326 , G21C3/62 , G21C5/00
CPC分类号： G21C3/326 , G21C1/084 , G21C3/32 , G21C5/18 , Y02E30/31 , Y02E30/38
摘要： PROBLEM TO BE SOLVED: To provide a core and fuel assemblies which make it possible (1) to curtail construction costs of a power plant by lowering the height of the core significantly, (2) to cut down fuel cycle costs by increasing the yield of plutonium during the operation of a reactor to prolong the life of the fuel assemblies and (3) to reduce power generation costs of the plant by extending an its continuous operation period to improve its availability while maintaining thermal margin and safety at the same level as those of boiling water reactors (BWRs) which are now operating.
SOLUTION: The ratio of the number of fuel assemblies loaded into the core to the radix of a control rod drive mechanism is ≥3. The fuel assemblies contain an oxide of low enriched uranium where the average enrichment of the fuel assemblies is 3 wt.% to 8 wt.% or a mixed oxide where the average fissile plutonium enrichment of the fuel assemblies is both ≥2 wt.% and less than 6 wt.%. In the BWR core of a burner type loaded with such fuel assemblies, the average weight of uranium, plutonium, minor actinides contained in a unit volume of a core domain is 2.1 to 3.4 kg/l in terms of values obtained when they are not burnt.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种核心和燃料组件，使得可以通过大幅降低铁芯的高度来减少发电厂的建造成本，（2）通过增加燃料循环成本来降低燃料循环成本在反应堆运行期间钚的产量延长燃料组件的寿命和（3）通过延长其连续运行时间来降低发电成本，以提高其可用性，同时保持同样的热裕度和安全性水平与现在正在运行的沸水反应堆（BWR）一样。
解决方案：加载到铁芯中的燃料组件数量与控制棒驱动机构的基数之比≥3。燃料组件包含低浓度铀的氧化物，其中燃料组件的平均浓度为3重量％至8重量％，或燃料组件的平均易裂变钚浓缩度≥2重量％的混合氧化物，以及小于6重量％。在装载有这种燃料组件的燃烧器类型的BWR型芯中，核心区域的单位体积中所含的铀，钚，次要锕系元素的平均重量为2.1至3.4kg / l，当它们不被燃烧时获得的值。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2004301831A Boiling water reactor light water reactor core and fuel assembly 有权
公开(公告)号：JP2004301831A
公开(公告)日：2004-10-28
申请号：JP2004075509
申请日：2004-03-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKEDA RENZO , AOYAMA TADAO , MIWA JUNICHI , IKEGAWA TOMOHIKO , MORIYA KIMIAKI
IPC分类号： G21C5/00 , G21C3/322 , G21C3/324 , G21C3/326 , G21C3/328 , G21C3/33 , G21C3/334 , G21C7/00
CPC分类号： Y02E30/38 , Y02E30/39
摘要： PROBLEM TO BE SOLVED: To provide a core and fuel assemblies capable of (1) reducing the construction cost of a power station by drastically reducing core height, (2) increasing plutonium production during operation, extending the life of fuel assemblies and reducing a fuel cycle cost, (3) increasing continuous operation period of the plant, improving a plant capacity factor and reducing a power generation cost, maintaining the thermal margin and safety as equal to the BWRs under operation. SOLUTION: The ratio of the number of fuel assemblies loaded in the core to the number of control rod drive mechanisms is 3 or more. The fuel assemblies include a low-enriched uranium oxide of fuel assembly average enrichment of 3 wt% to 8 wt% or mixed oxide with a fuel assembly average fissile plutonium enrichment of 2 wt% to 6 wt%. In a burner type BWR core loaded with that fuel assemblies, the average weight of uranium, plutonium and minor actinide included in a unit volume in core region is 2.1 to 3.4 Kg/l when converted into a value before burning. COPYRIGHT: (C)2005,JPO&NCIPI

6. 发明专利

JP2010025948A Light-water reactor core and fuel assembly 有权
标题翻译：轻水反应堆芯和燃料组件
公开(公告)号：JP2010025948A
公开(公告)日：2010-02-04
申请号：JP2009249615
申请日：2009-10-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKEDA RENZO , MIWA JUNICHI , MORIYA KIMIAKI
IPC分类号： G21C3/328 , G21C5/00 , G21C7/26
CPC分类号： Y02E30/38 , Y02E30/39
摘要： PROBLEM TO BE SOLVED: To provide a light-water reactor core and a fuel assembly that can extend burnup by enlarging nuclear nonproliferation resistance while observing safety restrictions and conditions and make multi-recycling possible. SOLUTION: The core flow of a BWR is regulated in such a way as to be a setup core flow that is determined from the characteristic of Fig. 2 according to the percentage of Pu-239 in TRU contained in a new fuel assembly that is loaded into the core. The core flow is held at the setup core flow in the core through each operation cycle of the BWR. Thus, the percentage of a plurality of isotopes of TRU contained in the fuel assembly at the point of time where the fuel assembly is taken out of the BWR core as a used fuel assembly becomes substantially equal to the percentage of those isotopes of TRU contained in the fuel assembly when the fuel assembly is loaded into the BWR core as a new fuel assembly. The percentage of Pu-239 in TRU contained in a new fuel assembly is not less than 3% and not greater than 45%. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种轻水反应堆核心和燃料组件，通过在遵守安全限制和条件的同时扩大核不扩散阻力并使多重循环成为可能，从而延长燃耗。解决方案：BWR的核心流程以这样的方式进行调节，即作为从图1的特性确定的设置核心流程。 2根据装载在核心中的新燃料组件中的TRU中的Pu-239的百分比。核心流程通过BWR的每个操作周期保持在核心的安装核心流程。因此，在将燃料组件作为使用燃料组件从BWR铁心中取出的时间点处的燃料组件中所含的多个同位素的多个同位素的百分比基本上等于TRU所含的同位素的百分比燃料组件当燃料组件作为新的燃料组件装载到BWR芯中时。新燃料组件中所含的TRUU中的Pu-239的百分比不小于3％且不大于45％。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2008045874A Boiling water type light water reactor core 有权
标题翻译：锅炉水型轻水反应堆核心
公开(公告)号：JP2008045874A
公开(公告)日：2008-02-28
申请号：JP2006218714
申请日：2006-08-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIWA JUNICHI , TAKEDA RENZO , MITSUYASU TAKESHI , MORIYA KIMIAKI
IPC分类号： G21C3/324 , G21C3/328 , G21C5/00
CPC分类号： Y02E30/31 , Y02E30/38
摘要： PROBLEM TO BE SOLVED: To provide a boiling water type light water reactor core capable of increasing output, while keeping a thermal margin in the same degree as a BWR in operation at present, and uniformizing furthermore cooling of each fuel rod in a fuel assembly at an increased output time.
SOLUTION: The fuel assembly 5 constituting this boiling water type light water reactor core includes fuel rods 6A, 6B, 6C, 6D, 6E including uranium and not including gadolinium, and fuel rods 6F, 6G, 6H including uranium and gadolinium. The fuel rod 6E is a partial length fuel rod. The average wall thickness of a channel box 7 is 2.6 mm, and the ratio of the inner width of the channel box 7 to the width of a fuel assembly lattice is 0.863. An average uranium enrichment on a cross section of the fuel assembly 5 is 4.73 wt.%. The uranium weight included in a unit volume in a core domain is 2.4 kg/l. A reactor output can be improved by 20% from the present BWR/5.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够增加输出的沸水型轻水反应堆堆芯，同时保持与当前操作中的BWR相同程度的热裕度，并且进一步均匀化每个燃料棒的冷却燃料组件在增加的输出时间。构成该沸水型轻水反应堆堆芯的燃料组件5包括包括铀的不包括钆的燃料棒6A，6B，6C，6D，6E以及包括铀和钆的燃料棒6F，6G，6H。燃料棒6E是部分长度的燃料棒。通道箱7的平均壁厚为2.6mm，通道箱7的内部宽度与燃料组件格架的宽度的比为0.863。在燃料组件5的横截面上的平均铀浓缩为4.73重量％。核心区域中单位体积的铀重量为2.4 kg / l。反应堆产量可以比现在的BWR / 5提高20％。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2005274336A Nuclear connection parting type shut-down device and nuclear reactor equipped therewith 审中-公开
标题翻译：核连接器类型关闭装置及其装备的核反应堆
公开(公告)号：JP2005274336A
公开(公告)日：2005-10-06
申请号：JP2004087718
申请日：2004-03-24
申请人： Hitachi Ltd , Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社 , 株式会社日立製作所
发明人： HIBI HIROMOTO , TAKIMOTO HIROKI , OYAMA TAKESHI , MORIYA KIMIAKI , MATSUURA MASAYOSHI , CHAGI MASAO , HINO TETSUSHI
IPC分类号： G21C1/08 , G21C7/10
CPC分类号： Y02E30/39
摘要： PROBLEM TO BE SOLVED: To provide a nuclear connection parting type shut-down device capable of suppressing increase of construction cost by reducing one-rod stuck reactivity allowance at the reactor shut-down, and a nuclear reactor equipped therewith.
SOLUTION: This nuclear connection parting type shut-down device is a control body for controlling a reactor output, arranged insertably between containers by a lifting means disposed on a top part or a bottom part of a multi-type nuclear reactor equipped with the plurality of containers having respectively a built-in core, having a neutron absorber filled therein, and having the top end part and the bottom end part sealed respectively. The control body is constituted so as to enclose the side face of a cassette when inserted between each cassette.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：提供一种能够通过减少反应堆停机时的单杆卡住反应性容限而抑制建筑成本的增加的核连接分型式停机装置，以及配备有该反应堆的核反应堆。解决方案：该核连接分型式关闭装置是用于控制反应器输出的控制体，其通过设置在装备有多级核反应堆的多型核反应堆的顶部或底部的提升装置可插入容器之间所述多个容器分别具有内置的芯，其中填充有中子吸收体，并且分别具有顶端部分和底端部分。控制体被构造为当插入在每个盒之间时包围盒的侧面。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2005140711A Nuclear power plant 审中-公开
标题翻译：核电站
公开(公告)号：JP2005140711A
公开(公告)日：2005-06-02
申请号：JP2003379257
申请日：2003-11-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKAHASHI SHIRO , OTSUKA MASAYA , SHIINA KOJI , HISATSUNE SHINICHI , MORIYA KIMIAKI
IPC分类号： G21C19/26 , G21D1/00 , G21D1/02
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a nuclear power plant equipped with structures for capturing foreign matter inside feed water pipe lines for a nuclear reactor.
SOLUTION: The nuclear power plant has structures for capturing foreign matters using gravity, inertia force, centrifugal force or magnetic force which are mounted on the route from a high-pressure feed water heater closest to the reactor to a feed water sparger in it. The plant also has structures for capturing foreign matters by using filters downstream from curved pipes, branch pipes and confluent pipes are mounted on the route, from the high-pressure feed water heater closest to the reactor to the feed water sparger in it. A safer nuclear power plant is realized, by restraining the damages to in-pile structures and equipment caused by the foreign matters.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种装备有用于在核反应堆的给水管线内捕获异物的结构的核电站。解决方案：核电站具有使用重力，惯性力，离心力或磁力捕获异物的结构，其安装在从最接近反应器的高压给水加热器到馈送水分配器的路线上它。该设备还具有通过使用弯曲管下游的过滤器，分支管和汇流管从最靠近反应器的高压给水加热器安装到其中的给水喷射器的路线上来捕获异物的结构。通过限制由异物引起的桩内结构和设备的损坏，实现了更安全的核电厂。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2004093141A Nuclear reactor 有权
公开(公告)号：JP2004093141A
公开(公告)日：2004-03-25
申请号：JP2002250597
申请日：2002-08-29
申请人： Hitachi Ltd , Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社 , 株式会社日立製作所
发明人： USUI SHUJI , OYAMA TAKESHI , HIBI HIROMOTO , TAKIMOTO HIROKI , MAKIHARA YOSHIAKI , GOTO HIROSHI , MORIYA KIMIAKI , MATSUURA MASAYOSHI , KOYAMA KAZUTO , CHAGI MASAO
IPC分类号： G21C1/20 , G21C1/00 , G21C1/28
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a nuclear reactor which eliminates the need for activities for monitoring the reactor in order to control the reactivity and requires no installations for controlling reactivity very minutely and responding to abnormalities in a reactivity controlling system.
SOLUTION: In-cassette cores 24 constituting fuel assemblies are provided in seven nuclear steam supply cassettes 21 laid out radially. In the in-cassette cores 24, the ratio of the quantity of loaded burnable poison contained in a core 24d in a peripheral cassette is higher than that in a core 24c in a central cassette so that the timing which makes it possible to keep the nuclear fission chain reaction in the core 24c in the central cassette and the core 24d in the peripheral cassette separately can vary. A control rod 32 is used as an installation in an emergency shutdown system of the reactor 20 and is kept fully pulled out upward during the normal operation of the reactor 20.
COPYRIGHT: (C)2004,JPO

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