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    • 2. 发明专利
    • 沸騰水型原子炉用燃料集合体
    • 锅炉水反应堆燃料总成
    • JP2015031574A
    • 2015-02-16
    • JP2013160662
    • 2013-08-01
    • 原子燃料工業株式会社Nuclear Fuel Ind Ltd
    • MIYAJI TAKAMASA
    • G21C3/328G21C3/326
    • Y02E30/31Y02E30/38
    • 【課題】経済性及び原子炉停止余裕を向上させることができ、軸方向上部領域における低温時の反応度及び局所ピーキング係数を低減することが可能なBWR用燃料集合体を提供する。【解決手段】本発明によるBWR用燃料集合体は、核燃料物質を含む燃料ペレットが被覆管内に充填されてなる燃料棒群が、10行10列以上の正方格子配列に配置され、燃料棒複数本相当の領域に水ロッドを備える。また、燃料棒群は、第1の燃料棒(標準燃料棒)と、軸方向下部の濃縮度が軸方向上部よりも高い第2の燃料棒(濃縮度分割燃料棒)と、燃料有効長が比較的短い第3の燃料棒(部分長燃料棒)を含む。そして、第2の燃料棒は、燃料集合体の最外周及び/又は水ロッドに隣接する位置のみに配置される。【選択図】図7
    • 要解决的问题:提供一种能够提高经济效率和反应堆停机裕度的BWR燃料组件,并且可以在轴向上部区域中降低低温下的反应性和局部峰值因素。解决方案:在BWR的燃料组件 本发明中,将包含燃料的燃料颗粒填充到包覆管中形成的一组燃料棒以10行以上10个以上的列排列成正方格形排列,并且在对应于 多个燃料棒。 一组燃料棒包括第一燃料棒(标准燃料棒),第二燃料棒(富集分配燃料棒),其中轴向下部的富集高于轴向上部的富集;以及第三燃料棒(部分长度 燃料棒)具有相对较短的燃料有效长度。 第二燃料棒仅布置在燃料组件的最外周边的位置和/或与水棒相邻的位置。
    • 3. 发明专利
    • 燃料集合体の損傷判定装置
    • 燃油组件的损伤测定装置
    • JP2015017877A
    • 2015-01-29
    • JP2013144872
    • 2013-07-10
    • 原子燃料工業株式会社Nuclear Fuel Ind Ltd
    • MARUYAMA YUICHIROAOKI TOYOKAZU
    • G21C17/07
    • 【課題】燃料棒内部にガスが存在していない場合であってもFPを含む水を充分に回収して、燃料集合体における損傷の発生の有無を効率良く判定することができる燃料集合体の損傷判定装置を提供する。【解決手段】水中の核分裂生成物を検出することにより、燃料集合体における原子燃料の損傷の有無を判定する燃料集合体の損傷判定装置であって、水面下に配置されて、内部に満たされた水の中に前記燃料集合体を収納する水中密閉容器と、水中密閉容器内の上部に気相部を形成させる気相部形成手段と、水中密閉容器内の水を回収する回収手段と、回収された水に含まれる核分裂生成物を検出する検出手段とを備えている燃料集合体の損傷判定装置。さらに、気相部形成手段により形成された気相部の圧力を飽和水蒸気圧に減圧する減圧手段を備えている燃料集合体の損傷判定装置。【選択図】図1
    • 要解决的问题:提供一种燃料组件的损坏确定装置,其能够通过充分回收包括FP(裂变产物)在内的水来有效地确定燃料组件中的损坏的发生,即使当气体不在 燃料棒。解决方案:提供燃料组件的损坏确定装置,其通过检测水中的裂变产物来确定燃料组件中核燃料的损坏的存在,包括:设置在水位下的水下密封容器, 用于将燃料组件容纳在填充在水下密封容器的内部的水中; 气相部分形成装置,用于在水下密封容器内部的上部形成气相部分; 用于回收水下密封容器内的水的回收装置; 以及用于检测包含在回收水中的裂变产物的检测装置。 燃料组件的损坏确定装置还包括用于将由气相部分形成装置形成的气相部分的压力降低到饱和水蒸汽压力的减压装置。
    • 4. 发明专利
    • Set of fuel assemblies for boiling-water reactor, and reactor core of boiling-water reactor
    • 锅炉水反应堆燃料组件集合和锅炉水反应堆反应堆核心
    • JP2014119287A
    • 2014-06-30
    • JP2012272777
    • 2012-12-13
    • Nuclear Fuel Ind Ltd原子燃料工業株式会社
    • MIYAJI TAKAMASATAKADA NAOYUKI
    • G21C5/00G21C3/326G21C3/328G21C3/62
    • Y02E30/31Y02E30/38
    • PROBLEM TO BE SOLVED: To provide a set of fuel assemblies for BWR and the like, capable of reducing a local peaking factor of a fuel assembly in which a relatively large number of fuel rods containing burnable poison are arranged, thereby further improving safety of a nuclear reactor.SOLUTION: The set of fuel assemblies which are loaded on a reactor core of BWR at the same time and have the same average enrichment includes a first fuel assembly and a second fuel assembly arranged in square lattice arrangement of 10 or more lines and 10 or more rows. The second fuel assembly has an arrangement in which the number of fuel rods containing burnable poison is larger than the number of fuel rods containing the burnable poison in the first fuel assembly and the fuel rods containing the burnable poison are added only on a virtual diagonal line connecting two facing corner parts, out of four corner parts of the square lattice arrangement, and at positions which are not adjacent to a water rod in the matrix direction, relative to an arrangement of the fuel rods in the first fuel assembly.
    • 要解决的问题:为了提供一种用于BWR等的燃料组件,能够降低其中布置有相对大量含有可燃毒物的燃料棒的燃料组件的局部峰值因数,从而进一步提高了安全性 核反应堆。解决方案:同时装载在BWR的反应堆堆芯上并且具有相同的平均浓度的燃料组件组包括第一燃料组件和布置成10个或更多个管线的正方形格子排列的第二燃料组件, 10行或更多行。 第二燃料组件具有这样的配置,其中包含可燃毒物的燃料棒的数量大于在第一燃料组件中包含可燃毒物的燃料棒的数量,并且包含可燃毒物的燃料棒仅添加在虚拟对角线上 相对于第一燃料组件中的燃料棒的布置,将正方形格栅布置的四个角部分中的两个相对的角部分以及在矩阵方向上不与水杆相邻的位置连接。
    • 5. 发明专利
    • Nuclear fuel assembly for pressurized water reactor and lower nozzle used therein
    • 用于加压水反应器的核燃料组件及其使用的较低喷嘴
    • JP2014066582A
    • 2014-04-17
    • JP2012211231
    • 2012-09-25
    • Nuclear Fuel Ind Ltd原子燃料工業株式会社
    • KAKIGI SHUNPEIMIZUMOTO YUKIHIKO
    • G21C3/33
    • Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a lower nozzle capable of rendering uniform a flow of cooling water which flows in through water flow holes and collides with fuel rods, and to provide further a fuel assembly for a pressurized water reactor capable of restraining the generation of fretting wear.SOLUTION: There is provided a lower nozzle disposed in a nuclear fuel assembly for a pressurized water reactor in order to make cooling water flow in toward fuel rods through water flow openings provided on a lower core plate of the pressurized water reactor. In the lower nozzle, a number of water flow holes are provided on a plate part, and a size of the water flow holes on the lower nozzle which are positioned on a place directly located downstream of the cooling water through the water flow openings of the lower core plate is smaller than a size of the water flow holes on the lower nozzle which are not positioned on the place. Also, there is provided the fuel assembly for the pressurized water reactor in which the lower nozzle is used.
    • 要解决的问题:提供一种能够使通过水流孔流入并与燃料棒碰撞的冷却水流动均匀的下喷嘴,并且进一步提供一种能够抑制生成的压力水反应堆的燃料组件 微动磨损。解决方案:设置在用于压水反应堆的核燃料组件中的下喷嘴,以便通过设置在压水反应堆的下芯板上的水流开口使冷却水流向燃料棒。 在下喷嘴中,多个水流孔设置在板部上,下喷嘴上的水流孔的尺寸位于直接位于冷却水下游位置的位置, 下芯板小于下喷嘴上没有定位在该位置上的水流孔的尺寸。 此外,还提供了使用下喷嘴的压水反应堆的燃料组件。
    • 6. 发明专利
    • Fuel holder, method for using fuel holder and method for transporting fuel assembly
    • 燃料保持器,使用燃料保持器的方法和用于运输燃料组件的方法
    • JP2013064654A
    • 2013-04-11
    • JP2011203807
    • 2011-09-16
    • Nuclear Fuel Ind Ltd原子燃料工業株式会社
    • NOZAKI TAKAHIROUCHIKAWA SADAYUKIIDE SHUICHI
    • G21F5/008G21F5/012
    • PROBLEM TO BE SOLVED: To provide a fuel holder capable of storing a fuel assembly formed in accordance with any standard without generating rattle, and to provide a method for using the fuel holder and a method for transporting the fuel assembly.SOLUTION: The fuel holder includes a storage shell having four internal surfaces forming a storage space capable of storing a fuel assembly of every standard and intersecting with each other; urging means formed on two adjacent internal surfaces of the four internal surfaces and having urging force directed to the other internal surfaces respectively opposed to the two internal surfaces; and backing plates attached to two internal surfaces to which the urging means are not attached. In the fuel holder, even when a fuel assembly of any standard is stored in the storage space, a thickness Wp of the backing plate is changed by moving the backing plate so that the total of a support grid dimension Ws of a support grid of the fuel assembly and the thickness Wp of the backing plate on a portion abutting on the support grid is constant. Further, the method for using the fuel holder and the method for transporting the fuel assembly are provided.
    • 解决的问题:提供能够存储根据任何标准形成的燃料组件而不产生拨浪鼓的燃料保持器,并且提供使用燃料保持器的方法和用于运输燃料组件的方法。 解决方案:燃料保持器包括具有四个内表面的储存壳体,形成能够存储每个标准并相互交叉的燃料组件的储存空间; 推动装置形成在四个内表面的两个相邻的内表面上,并且具有引导到分别与两个内表面相对的另一个内表面的施力; 以及附接到不附着推动装置的两个内表面的背板。 在燃料保持器中,即使当任何标准的燃料组件被存储在存储空间中时,通过移动背板来改变背板的厚度Wp,使得支撑网格的支撑网格尺寸Ws的总和 燃料组件和抵靠在支撑格栅上的部分上的背板的厚度Wp是恒定的。 此外,提供了使用燃料保持器的方法和用于运输燃料组件的方法。 版权所有(C)2013,JPO&INPIT
    • 7. 发明专利
    • Electrode for resistance welding and welding method
    • 电阻焊接和焊接方法
    • JP2013018022A
    • 2013-01-31
    • JP2011152753
    • 2011-07-11
    • Nuclear Fuel Ind Ltd原子燃料工業株式会社
    • TAKEDA TORUTAUCHI KAZUTOMATSUI TAKANORI
    • B23K11/30B23K11/00G21C21/02
    • PROBLEM TO BE SOLVED: To perform resistance welding successfully without exposing the end face of a tubular member when joining the tubular member and an end plug by the resistance welding.SOLUTION: The tubular member 20 is made to be positioned without contact with the recessed part 10ER of an electrode 10E on the side of the end plug before the resistance welding of the tubular member 20 and the end plug 30, and, after starting welding, the molten part M of the tubular member 20 and the end plug 30 is brought into contact with the electrode 10E on the side of the end plug in the inner part of the electrode 10E on the side of the end plug and, by making a welding current flow into the tubular member 20 from the electrode 10E on the side of the end plug through the molten part M. Consequently, the melting of the tubular member 20 is performed sufficiently and in addition, the molten part M is formed in the recessed part 10ER of the electrode 10E on the side of the end plug and the tubular member 20 and the end plug 30 are surely joined without exposing the end face of the tubular member 20.
    • 要解决的问题:在通过电阻焊接合管状构件和端塞时,不会使管状构件的端面暴露而成功地进行电阻焊接。

      解决方案:在管状构件20和端塞30的电阻焊接之前,管状构件20被定位成不与端子塞侧面上的电极10E的凹部10ER接触,并且之后 开始焊接时,管状构件20的熔融部分M和端塞30与电极10E在端塞一侧的内部部分中的端塞一侧的电极10E接触,并且通过 使焊接电流通过熔融部分M从端塞的一侧的电极10E流入管状部件20.因此,能够充分地进行管状部件20的熔融,另外,熔融部M形成于 电极10E在端塞一侧的凹部10ER和管状构件20和端塞30可靠地接合而不暴露管状构件20的端面。版权所有:(C)2013,JPO&INPIT

    • 8. 发明专利
    • Assembly jig and assembly method of fuel assembly
    • 燃油组件组装和组装方法
    • JP2012242144A
    • 2012-12-10
    • JP2011109975
    • 2011-05-17
    • Nuclear Fuel Ind Ltd原子燃料工業株式会社
    • NOHARA TATSURO
    • G21C21/00
    • PROBLEM TO BE SOLVED: To easily manufacture a fuel assembly that can suppress the generation of residual stress at a control rod guide thimble and has a high straightness with little torsion and inclination.SOLUTION: An assembly jig of a fuel assembly comprises: a holding rod having a flange part at the lower end side thereof; an inner tube formed in a cylindrical shape as insertable in a control rod guide thimble and externally fitted on the holding rod; rotation regulating means that regulates the rotation of the inner tube; elevating means that is formed at the upper end side of the inner tube and moves the holding rod in vertical directions relatively with respect to the inner tube; a holding rubber that is externally fitted on a part of the holding rod located higher than the flange part; an outer tube that has an engaging part for engaging an internal screw at the lower end side thereof and externally fitted on the inner tube; and fastening means that is formed at the upper end side of the outer tube and fastens the internal screw by operating the engaging part. In addition, an assembly method of the fuel assembly uses the assembly jig of the fuel assembly.
    • 要解决的问题:为了容易地制造能够抑制控制棒导向套管产生残余应力的燃料组件,并且具有很小的扭转和倾斜的高直线性。 解决方案:燃料组件的组装夹具包括:保持杆,其在其下端侧具有凸缘部分; 形成为可插入控制棒导向套筒中的外筒形状的内管,并且外嵌于保持杆上; 旋转调节装置,其调节内管的旋转; 升降装置,其形成在所述内管的上端侧,并且相对于所述内管在垂直方向上移动所述保持杆; 固定橡胶,其外部装配在位于高于所述凸缘部分的所述保持杆的一部分上; 外管,其具有用于与其内侧的内螺纹接合并嵌合在内管上的接合部; 以及紧固装置,其形成在外管的上端侧,并通过操作接合部来固定内螺纹。 此外,燃料组件的组装方法使用燃料组件的组装夹具。 版权所有(C)2013,JPO&INPIT
    • 9. 发明专利
    • Visual inspection device for fuel assembly
    • 燃油组件视觉检测装置
    • JP2012132940A
    • 2012-07-12
    • JP2012088487
    • 2012-04-09
    • Nuclear Fuel Ind Ltd原子燃料工業株式会社
    • IKUTA HIDETSUGUOSHIMA HIROTAKEKITAGAWA YUJI
    • G21C17/06
    • PROBLEM TO BE SOLVED: To provide a visual inspection device for a fuel assembly capable of acquiring a normal image without using an electric image inversion device, focusing on both the fuel assembly and an insertion object without separating a distance between a subject and a camera, and performing efficiently visual appearance inspection.SOLUTION: A visual inspection device for a fuel assembly images the subject by reflecting a beam from the subject by a reflecting mirror and then allowing the beam to enter a camera head. The visual inspection device has two reflecting mirrors as the reflecting mirrors, namely, the first reflecting mirror and the second reflecting mirror. The first reflecting mirror and the second reflecting mirror are arranged such that, when the beam from the subject is reflected by the first reflecting mirror, then reflected by the second reflecting mirror and then allowed to enter the camera head to thereby image the subject, a light path length is changed by positional change of the first reflecting mirror and the second reflecting mirror to adjust a focus range.
    • 要解决的问题:为了提供一种能够在不使用电图像反转装置的情况下获取正常图像的燃料组件的目视检查装置,将燃料组件和插入对象两者聚焦在一起,而不会分离物体与物体之间的距离 相机,并进行有效的视觉外观检查。 解决方案:用于燃料组件的视觉检查装置通过用反射镜反射来自被摄体的光束然后允许光束进入照相机头来对被摄体进行成像。 目视检查装置具有作为反射镜的反射镜,即第一反射镜和第二反射镜。 第一反射镜和第二反射镜被布置成使得当来自被摄体的光束被第一反射镜反射,然后被第二反射镜反射,然后允许其进入照相机头以使被摄体成像时, 通过第一反射镜和第二反射镜的位置变化来改变光路长度,调整聚焦范围。 版权所有(C)2012,JPO&INPIT
    • 10. 发明专利
    • Fuel assembly for nuclear reactor
    • 燃料组件用于核反应堆
    • JP2012058003A
    • 2012-03-22
    • JP2010199698
    • 2010-09-07
    • Nuclear Fuel Ind Ltd原子燃料工業株式会社
    • KOIKE GENOKUBO KAZUTOSHI
    • G21C3/06
    • Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a fuel assembly in which flakes generated by shaving a coating tube surface of a fuel rod by contact with a spacer when assembling the fuel assembly can be reduced, a work time for removing flakes deposited on the coating tube surface during a finishing step after assembly is shortened, and thereby suppressing exposure of a worker.SOLUTION: In a fuel assembly, for a coating tube 22 of each fuel rod, a centerline average roughness Ra meets range conditions of 0.25 μm or more and 0.7 μm or less and a ten-point average roughness Rz meets range conditions of 2.5 μm or more and 5 μm or less as the surface property characteristics thereof.
    • 要解决的问题:提供一种燃料组件,其中可以减少在组装燃料组件时通过与间隔件接触来剃刮燃料棒的涂覆管表面而产生的薄片,用于去除沉积在燃料组件上的薄片的工作时间 组装后的整理步骤中的涂布管表面被缩短,从而抑制了工人的暴露。 解决方案:在燃料组件中,对于每个燃料棒的涂覆管22,中心线平均粗糙度Ra满足0.25μm以上且0.7μm以下的范围条件,十点平均粗糙度Rz满足范围条件 2.5μm以上5μm以下的表面特性。 版权所有(C)2012,JPO&INPIT