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    • 1. 发明专利
    • Piping system for capturing foreign matter
    • 用于捕获外部事务的管道系统
    • JP2007032710A
    • 2007-02-08
    • JP2005217150
    • 2005-07-27
    • Hitachi Ltd株式会社日立製作所
    • ISHIDA NAOYUKITAKAHASHI SHIROSONEDA HIDEOYASUDA KENICHIHISATSUNE SHINICHI
    • F16L55/24F01D25/00G21C19/307G21D1/02
    • Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a piping system for capturing foreign matters capable of improving a capturing ratio of foreign matters mixed in fluid.
      SOLUTION: Horizontal pipe conduits 2H, 2H1, 2H2 are formed on the way of piping 2, 12A, 12B, a water stop zone formation portion is provided to form a water stop zone 10 at a downstream side of the horizontal pipe conduits, further connection piping 3C, 3C1, 3C2 are formed in a state of extending upward from the horizontal pipe conduits at an upstream side with respect to the water stop zone formation portion and reaching a downstream side of the piping, and a tip 11 of the water stop zone 10 is positioned within a range of openings of pockets 5, 51, 52 formed on the horizontal pipe conduits in a state of extending downward.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种用于捕获能够提高混合在流体中的异物捕获率的异物的管道系统。

      解决方案:在管道2,12A,12B的路上形成水平管道2H,2H1,2H2,设置防水区域形成部分,以在水平管道的下游侧形成停水区域10 进一步的连接配管3C,3C1,3C2形成为从水平管路向上延伸的状态,在相对于停水区域形成部的上游侧到达管路的下游侧, 止水带10位于在向下延伸的状态下形成在水平管道上的袋5,51,52的开口的范围内。 版权所有(C)2007,JPO&INPIT

    • 4. 发明专利
    • Reactor core support structure
    • 反应堆核心支撑结构
    • JP2006194749A
    • 2006-07-27
    • JP2005007002
    • 2005-01-14
    • Hitachi Ltd株式会社日立製作所
    • SHIBATA MASAKAZUSONEDA HIDEOWATANABE SATOSHIYASUDA KENICHIOTSUKA MASAYAMIZUNO TADASHI
    • G21C15/02G21C5/06G21C5/10
    • Y02E30/31
    • PROBLEM TO BE SOLVED: To reduce the pressure loss coefficient of an orifice of fuel support metal in a boiling water reactor without degrading reinforcement effects by a reinforcement beam of a core support structure plate having a perpendicular reinforcement beam to the utmost.
      SOLUTION: Each of reinforcement beams 3 and 4 of the core support plate of a boiling water reactor is perpendicularly assembled and the thickness of one reinforcement beam 3 is formed thinner than the thickness of the other reinforcement beam 4. Because of the difference in thickness of each reinforcement beam 3, 4, flow areas S
      1 and S
      2 in the left and the right of the boundary of a broken line connecting a corner where the reinforcement beams 3, 4 cross and the center of the orifice 2 of the fuel support metal 1 facing the corner become imbalance. As the flow paths around a control rod guide tube 9 inserted between each reinforcement beam 3, 4 become asymmetric on the broken line, and the flow into the orifice 2 of the fuel support metal 1 is simplified, pressure loss in the reactor core is reduced.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了降低沸水反应器中的燃料载体金属的孔口的压力损失系数,而不会使具有垂直加强梁的芯支撑结构板的加强梁最大限度地降低加固效果。 解决方案:沸水反应器的芯支撑板的每个加强梁3和4垂直组装,并且一个加强梁3的厚度形成为比另一个加强梁4的厚度更薄。由于差异 每个加强梁3,4的厚度,连接角部的虚线的边界的左侧和右侧的流动区域S 1 和S 2 燃料支撑金属1的孔3和4的横截面中心与燃料支撑金属1相对的角部变得不平衡。 当插入在每个加强梁3,4之间的控制杆引导管9周围的流动路线在虚线上变得不对称时,并且简化了进入燃料支撑金属1的孔口2的流动时,反应堆堆芯中的压力损失减小 。 版权所有(C)2006,JPO&NCIPI
    • 5. 发明专利
    • Hydrostatic bearing, and plate processing device and plate processing method using the same
    • 含水轴承及板加工装置及其加工方法
    • JP2003021143A
    • 2003-01-24
    • JP2001208714
    • 2001-07-10
    • Hitachi Ltd株式会社日立製作所
    • YASUDA KENICHIHIRAMA YUKIOIGARI MINORU
    • F16C32/06B21B31/07F16C13/02
    • PROBLEM TO BE SOLVED: To increase productivity by reducing time to repair a hydrostatic bearing.
      SOLUTION: The hydrostatic bearing 1 has two top plates 6 arranged to cover respective open shoulder portions 9 of a raceway 3. In the arrangement, an edge 6a of each top plate 6 projects from an inner surface of the raceway 3, and a gap Ga between the edge 6a and an outer periphery of a roller 7 is smaller than a gap Gb between the inner surface of the raceway 3 and the outer periphery of the roller 7. The constitution, which is equivalent to that with a large wear portion, can retard degradation in a levitation characteristic of the roller 7 to prolong a period of recovering repair. Recovering repair only requires the replacement of each top plate 6 with a new one while a bearing body 2 is kept installed in a plate processing device, so that the work can be short and easy.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:通过减少修复静压轴承的时间来提高生产率。 解决方案:静压轴承1具有布置成覆盖滚道3的相应开口肩部9的两个顶板6.在该布置中,每个顶板6的边缘6a从滚道3的内表面突出,并且间隙Ga 在边缘6a和辊7的外周之间的距离小于滚道3的内表面和滚子7的外周之间的间隙Gb。等同于具有大磨损部分的构造可以 延缓辊7的悬浮特性的劣化,延长恢复修复的时间。 恢复维修只需要更换每个顶板6,同时将轴承体2保持安装在板处理装置中,使得工作可以简单和容易。
    • 6. 发明专利
    • Method of collecting foreign matter
    • 收集外国人的方法
    • JP2006234406A
    • 2006-09-07
    • JP2005045488
    • 2005-02-22
    • Hitachi Ltd株式会社日立製作所
    • ISHIDA NAOYUKITAKAHASHI SHIROSONEDA HIDEOYASUDA KENICHI
    • G21C19/02G21C19/26
    • PROBLEM TO BE SOLVED: To provide a method of collecting a foreign matter which suppresses damage on a fuel rod to enhance safety in a nuclear reactor.
      SOLUTION: A foreign matter collecting implement 20 having a filtering mesh member 21b for collecting foreign matters is attached on a pump body 1A of a recirculation pump 1 while the nuclear reactor is stopped. Circulation flow is formed inside a pressure vessel 10 by operating the recirculation pump 1 to capture the foreign matters with the filtering mesh member 21b. Then, the pump 1 is stopped, and the foreign matter collecting implement 20 is taken out of the pressure vessel 10 to collect the foreign matters together with the implement 20.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种收集异物的方法,其抑制对燃料棒的损害以提高核反应堆的安全性。 解决方案:在核反应堆停止的同时,将具有用于收集异物的过滤网构件21b的异物收集器具20安装在再循环泵1的泵体1A上。 通过使再循环泵1通过过滤网构件21b捕获异物,在压力容器10的内部形成循环流。 然后,泵1停止,异物收集工具20从压力容器10中取出,与工具20一起收集异物。(C)版权所有(C)2006,JPO&NCIPI