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    • 2. 发明专利
    • ジェットポンプの振動抑制装置、ジェットポンプおよびその振動抑制方法
    • 喷射泵振动抑制装置,喷射泵及其振动抑制方法
    • JP2014199243A
    • 2014-10-23
    • JP2013256010
    • 2013-12-11
    • 株式会社東芝Toshiba Corp
    • WATANABE KATSUNOBUSHIOYAMA TSUTOMUKINUGASA KUNIHIKOMASUDA YUKIMATSUKAWA KOZUEMORI HIROSHIMINATO YUKI
    • G21C15/25G21C15/243
    • F04F5/10F04F5/46F04F5/463F04F5/464F04F5/54G21C15/25Y02E30/31
    • 【課題】ジェットポンプの流動特性を維持し、すべり継ぎ手のすき間流れに起因した自励振動を抑制することができるジェットポンプの振動抑制技術である。【解決手段】本発明に係るジェットポンプの振動抑制装置は、沸騰水型原子炉の原子炉圧力容器内に設けられ、ライザー管に連結されるインレットミキサー管33と、このインレットミキサー管33にすべり継ぎ手により連結されるディフューザ34とを備え、ディフューザ内周面とインレットミキサー管外周面とによりすべり継ぎ手40のすき間流路48が形成され、原子炉圧力容器内の冷却水を強制循環させるジェットポンプにおいて、ディフューザ34上に載置され、下方の内径よりも上方の内径が小さい形状を有し、その内周面とインレットミキサー管33外周面とにより、ディフューザ34の上端よりも上方に延長すき間流路を形成するエクステンションスリーブ53とが備えられ、延長すき間流路51は、エクステンションスリーブ53の形状によって下方より上方が狭い形状に形成されたことを特徴とするものである。【選択図】図5
    • 要解决的问题:提供一种喷射泵振动抑制技术,其能够保持喷射泵的流动特性,并抑制由滑动接头的间隙中的流动引起的自激振动。解决方案:根据 提供在沸水反应堆的反应堆压力容器中的本发明包括:连接到提升管的入口混合器管33; 以及与滑动接头连接到入口混合管33的扩散器34。 喷射泵在由扩散器的内周面和入口混合管的外周面形成的滑动接头40的间隙中形成有流路48,迫使反应器压力容器中的冷却水循环, 包括放置在扩散器34上的延伸套筒53,其具有在上侧的内径小于下侧的内径的形状,并且形成延伸的间隙流动路径, 扩散器34由延伸套筒的内周面和入口混合管33的外周面形成。延伸间隙流路51形成为其上侧比其下侧窄的形状,由于形状 的延伸套筒53。
    • 3. 发明专利
    • Method and apparatus for repairing piping for jet pump measurement
    • 用于维修喷水泵测量的管道的方法和装置
    • JP2013152106A
    • 2013-08-08
    • JP2012012099
    • 2012-01-24
    • Toshiba Corp株式会社東芝
    • MINATO YUKIKINUGASA KUNIHIKOMORI HIROSHIYAMAMOTO SATOSHIADACHI HIROYUKIMIHASHI TADAHIROWATANABE KATSUNOBUKATAYAMA YOSHINORIMATSUKAWA KOZUEMIYAMURA SATOSHI
    • G21C19/02G21C15/25
    • G21C19/207G21C13/032G21C15/25G21C17/032G21C19/19Y02E30/40Y10T29/49238
    • PROBLEM TO BE SOLVED: To provide a method for repairing piping for jet pump measurement, with which a break event that occurs in a lower portion of a jet pump in which piping for measurement is installed in a horizontal direction under water can be handled and repair work in a narrow part is facilitated.SOLUTION: According to an embodiment, a method for repairing piping for jet pump measurement is provided for repairing a broken part of piping for measurement installed in a lower portion of a jet pump which is provided in reactor water within a reactor pressure vessel in a horizontal direction. The method includes a support member fixing step S1 for fixing a support member to the jet pump in the vicinity of the remaining piping for measurement, a connector mounting step S2 for mounting a measurement piping connector, to the support member, equipped with a piping repair pipe with which connecting pipes are fitted into both ends, after the support member fixing step S1, and a connection step S3 for connecting the remaining piping for measurement and the connecting pipes by using the measurement piping connector after the connector mounting step S2.
    • 要解决的问题:为了提供一种用于维修喷射泵测量的管道的方法,其中在水下在水平方向上安装测量管道的喷射泵的下部发生断裂事件,可以进行处理和修理 解决方案:根据一个实施例,提供了一种修复用于喷射泵测量的管道的方法,用于修复安装在设置在反应器水中的喷射泵的下部中的用于测量的管道的断裂部分 在反应堆压力容器内沿水平方向。 该方法包括:支撑构件固定步骤S1,用于将支撑构件固定在剩余的测量管道附近的喷射泵附近,将用于安装测量管道连接器的连接器安装步骤S2连接到配备有管道修复的支撑构件 在支撑部件固定步骤S1之后,将连接管装配到两端的管道,以及在连接器安装步骤S2之后使用测量管道连接器连接剩余的测量管道和连接管道的连接步骤S3。
    • 5. 发明专利
    • Jet pump and bolt fixing device of jet pump beam
    • 喷射泵浦喷枪和螺栓固定装置
    • JP2013130493A
    • 2013-07-04
    • JP2011280714
    • 2011-12-22
    • Toshiba Corp株式会社東芝
    • FUJITA TOMOKIMOTOYOSHI YUUICHISAEKI KIYOBUMIKINUGASA KUNIHIKOSAKAI YASUHIROHATAKE HARUHIKOMORI HIROSHIMINATO YUKIITO AKIRAMATSUKAWA KOZUE
    • G21C15/25
    • F16B39/10F04F5/44F16B37/14F16B39/282G21C15/25G21C19/02G21C19/20Y02E30/40
    • PROBLEM TO BE SOLVED: To provide a bolt fixing device of a jet pump beam, for easily and surely stopping rotation of a head bolt of the jet pump beam when installing an inlet mixer.SOLUTION: According to an embodiment, the bolt fixing device includes: a lock cap 36 which is fitted to a polygonal head part 32 of a head bolt 30, is movable in a vertical axis direction and is rotatable integrally with the head bolt 30; a body housing 37 which houses the lock cap 36 and is installed on an upper surface of a jet pump beam 27; and an elastic member 40 which is provided below the lock cap 36 inside the body housing 37 and imparts elastic force vertically upwards to the lock cap 36. A bolt fixing device 35 pushes up the lock cap 36 by the elastic force of the elastic member 40, engages a plurality of upper surface teeth formed on an upper surface of a flange of the lock cap 36 with a plurality of lower surface teeth formed on a lower surface of a locking flange of the body housing 37, and fixes the head bolt 30 of the jet pump beam 27.
    • 要解决的问题:提供喷射泵梁的螺栓固定装置,用于在安装入口混合器时容易且可靠地停止喷射泵梁的头螺栓的旋转。解决方案:根据一个实施例,螺栓固定装置包括 :安装在头螺栓30的多边形头部32上的锁盖36能够在垂直轴方向上移动,并与头螺栓30一体转动; 容纳锁帽36并安装在喷射泵梁27的上表面上的主体壳体37; 以及弹性构件40,其设置在主体壳体37内的锁定盖36的下方,并且向弹性构件40的弹力向垂直向上施加弹性力。螺栓固定装置35通过弹性构件40的弹力推动锁定帽36 与形成在锁盖36的凸缘的上表面上的多个上表面齿接合形成在主体壳体37的锁定凸缘的下表面上的多个下表面齿,并将头螺栓30固定在 喷射泵梁27。
    • 7. 发明专利
    • In-reactor measurement tube maintenance clamp device
    • 反应器测量管维护夹具装置
    • JP2013156081A
    • 2013-08-15
    • JP2012015710
    • 2012-01-27
    • Toshiba Corp株式会社東芝
    • OZAWA YUSUKEKINUGASA KUNIHIKOMORI HIROSHIMINATO YUKIWATANABE KATSUNOBUADACHI HIROYUKIMIHASHI TADAHIRO
    • G21C15/25G21C17/032
    • B23K37/0533G21C13/032G21C15/25G21C17/032G21C19/19G21C19/207Y02E30/40
    • PROBLEM TO BE SOLVED: To allow work for firmly fixing a measurement tube to a diffuser to be simply performed, and further to allow stress of a weld zone to a support to be reduced.SOLUTION: An in-reactor measurement tube maintenance clamp device comprises: a main body frame 30 having a vertical portion 31 fastened to an outside surface of a diffuser 18 and a horizontal portion 32 perpendicular to the vertical portion 31; a first clamp mechanism having clamps for holding a measurement tube 19; a plurality of clamp operation bolts 37, 38 and 39 that are vertically provided to the horizontal portion 32 of the main body frame 30 and can be rotated by remote operation from right above a reactor core; a wedge mechanism that converts rotation of the plurality of clamp operation bolts 37, 38 and 39 into movement of the clamps in a radial direction of the diffuser 18 and generates clamp force for fixing the measurement tube 19; and a second clamp mechanism having a clamp for holding a support 24, a second clamp operation bolt and a wedge mechanism that converts rotation of the second clamp operation bolt into movement of the clamp in a tangential direction of the diffuser 18 and generates clamp force for fixing the support 24.
    • 要解决的问题:为了简单地执行将测量管牢固地固定到扩散器的工作,并且进一步允许焊接区域对支撑件的应力减小。解决方案:反应器内测量管维护夹紧装置包括 主体框架30具有紧固于扩散器18的外表面的垂直部分31和垂直于垂直部分31的水平部分32; 具有用于保持测量管19的夹具的第一夹紧机构; 多个夹紧操作螺栓37,38和39,其垂直地设置在主体框架30的水平部分32上,并且能够从反应堆堆芯的正上方远程操作地旋转; 楔形机构,其将多个夹紧操作螺栓37,38和39的旋转转换成在扩散器18的径向方向上的夹具的移动,并产生用于固定测量管19的夹紧力; 以及第二夹紧机构,其具有用于保持支撑件24的夹具,第二夹具操作螺栓和楔形机构,其将第二夹具操作螺栓的旋转转换成沿着扩散器18的切线方向的夹具的移动,并产生用于 固定支撑件24。