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1. 发明专利

JP2005207983A Repairing method for instrumentation tube of jet pump differential pressure, and its system 有权
标题翻译：喷射泵差压检测仪及其系统的维修方法
公开(公告)号：JP2005207983A
公开(公告)日：2005-08-04
申请号：JP2004016912
申请日：2004-01-26
申请人： Bab-Hitachi Industrial Co , Hestec Service Co Ltd , Hitachi Ltd , バブ日立工業株式会社 , 株式会社ヘステックサービス , 株式会社日立製作所
发明人： YOSHIE YUTAKA , NISHINO MASAYUKI , NAGASHIMA TOSHIJI , IKEDA HIROSHIGE , FURUKAWA NOBUO , SUGANO SATOSHI , OTAKA MINORU
IPC分类号： G21C15/25 , G21C15/243 , G21C19/02
CPC分类号： Y02E30/31
摘要： PROBLEM TO BE SOLVED: To provide a method and system capable of efficiently repairing in a short time, when a work of repairing instrumentation tube of jet pump has incurred during service period.
SOLUTION: In-reactor equipment are removed, centers of broken instrumentation tubes are tentatively aligned, the breakage cross sections are held at nearly aligned positions by the tentative matching, tube outer surface is polished, and the breakage positions are tentatively welded (S101 to 104), by introducing a tentative welder in the reactor. When tentative welding is completed, the tentative welder is taken out of the reactor for total seal welding of the tentatively finished instrumentation tube, and a seal welder is introduced in the reactor and attached to the tentatively welded instrumentation tube. Well water is drained and seal welding of the instrumentation tube is conducted (S105 to 107), by operating the seal welder in pneumatic environment. Then, the pressure vessel is filled with water, the seal welder is taken out, and in-reactor components are recovered (S108 to 110) for finishing the work.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种能够在短时间内有效修复的方法和系统，当在使用期间发生喷射泵的仪表管的修理工作时。解决方案：拆除反应堆内的设备，将试样管的中心暂时排列，通过临时匹配将断裂截面保持在几乎对准的位置，管外表面进行抛光，并将断裂位置暂时焊接（ S101至104），通过在反应堆中引入临时焊工。暂时焊接完成后，临时焊机从反应堆中取出，用于临时成品仪表管的全密封焊接，并将密封焊机引入反应堆并附着在临时焊接的仪表管上。通过在气动环境中操作密封焊机，排水井和仪表管的密封焊接（S105〜107）。然后，用水填充压力容器，取出密封焊接机，回收反应器内部件（S108〜110），完成工作。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2004347437A Jet pump wedge mechanism and method for replacing it 审中-公开
公开(公告)号：JP2004347437A
公开(公告)日：2004-12-09
申请号：JP2003144237
申请日：2003-05-22
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , 日立エンジニアリング株式会社 , 株式会社日立製作所
发明人： YOSHIE YUTAKA , NIHEI KENICHI , SUGANO SATOSHI , OTAKA MINORU , MAEDA MINORU
IPC分类号： G21C15/25 , G21C19/02
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To heighten an efficiency and improve a workability in replacement work by providing a structure where a jet pump wedge to prevent an inlet mixer from vibrating can be replaced easily and a replacement method for the structure in a jet pump for a boiling water reactor.
SOLUTION: As a wedge mechanism has a structure which includes a whirl-stop mechanism at its lower end beforehand and whose upper end is screwed with a nut as one end of a stud bolt for mooring the jet pump wedge, the nut for the stud bolt can be removed easily by being accessed by remote control from above a reactor pressure vessel. Notably, the whirl-stop of the nut can be attained easily by forming an integral structure of the nut and a rove and bending a part of the latter. The work for replacing the jet pump wedge can be carried out efficiently.
COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JP2004219102A Conservation method for jet pump 审中-公开
标题翻译：喷油泵保养方法
公开(公告)号：JP2004219102A
公开(公告)日：2004-08-05
申请号：JP2003003442
申请日：2003-01-09
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , 日立エンジニアリング株式会社 , 株式会社日立製作所
发明人： YOSHIE YUTAKA , FURUKAWA NOBUO , OTAKA MINORU , FUKUMITSU HARUMASA , SUGANO SATOSHI
IPC分类号： G21C15/25 , G21C19/02
CPC分类号： Y02E30/31
摘要： PROBLEM TO BE SOLVED: To provide a conservation method for jet pumps by which increase of fabrication process is suppressed and lowering of damage potential of jet pump beams can be attained.
SOLUTION: In conservation work, a retainer is removed so that jet pump beams 15 with thick ends 19 of the beam can be newly attached. By thickening the beam ends 19 for the withdrawal of the retainer, machining for providing a dent in the middle of the bottom of the jet pump beam 15 becomes unnecessary and generation of stress in the jet pump beam 15 can be reduced.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：提供一种喷射泵的保护方法，通过该方法可以抑制制造工艺的增加，并且可以实现喷射泵浦梁的损伤电位的降低。解决方案：在保护工作中，移除保持器，使得可以重新连接具有梁的厚端部19的喷射泵梁15。通过使梁端部19变厚以取出保持器，不需要在喷射泵梁15的底部中间设置凹痕的加工，并且可以减少喷射泵梁15中的应力产生。版权所有（C）2004，JPO＆NCIPI

4. 发明专利

JP2004212336A Clamping device and clamping method for jet pump instrumentation tube 有权
公开(公告)号：JP2004212336A
公开(公告)日：2004-07-29
申请号：JP2003002265
申请日：2003-01-08
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , 日立エンジニアリング株式会社 , 株式会社日立製作所
发明人： YOSHIE YUTAKA , OTAKA MINORU , ITO TAKASHI , SUGANO SATOSHI
IPC分类号： G21C15/25 , G21C17/032
CPC分类号： Y02E30/31
摘要： PROBLEM TO BE SOLVED: To provide a clamping device and a clamping method for a jet pump instrumentation tube, made capable of reducing stresses, even if a fluid oscillation is given to welded parts of a support and an instrumentation tube of diffuser, from all directions.
SOLUTION: The body 23 of a C-shape arm 22 having two projections 24 is provided with a pressing member 28 pressed by a first wedge member 27 against a diffuser 14 and a drawing member 33 drawn by a second wedge member 32 in a direction of parting from the diffuser 14 so that the instrumentation tube 20 is clamped firmly in a pinched state by the pressing member 28 and the drawing member 33.
COPYRIGHT: (C)2004,JPO&NCIPI

5. 发明专利

JP2007063642A Method for improving remaining stress and coil for high-frequency induction heating 审中-公开
标题翻译：用于改善高频感应加热的剩余应力和线圈的方法
公开(公告)号：JP2007063642A
公开(公告)日：2007-03-15
申请号：JP2005253522
申请日：2005-09-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOMURO TAKAHIRO , MASUDA MINORU , YOSHIE YUTAKA
IPC分类号： C21D1/42 , C21D1/30 , C21D9/08 , C21D9/50 , G21D1/00 , H05B6/44
CPC分类号： Y02E30/40 , Y02P10/212 , Y02P10/253
摘要： PROBLEM TO BE SOLVED: To provide a method for improving the remaining stress in a welded part and a coil for high-frequency induction heating which can efficiently apply to various pipings having different shapes and sizes. SOLUTION: As the heating coil for improving the remaining stress in the piping 1 joining straight pipes 1a, 1b having different sizes at a welding part 2, two or more of the partial heating coils 10A, 10B having different diameters are used and these coils are combined and these are disposed at one side and the other side of the welding part 2, respectively so as to be possible to efficiently generate the temperature difference to the piping 1. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于提高可以有效地应用于具有不同形状和尺寸的各种管道的用于高频感应加热的焊接部分和线圈中的剩余应力的方法。解决方案：作为用于改善在焊接部分2处具有不同尺寸的直管1a，1b的管道1中的剩余应力的加热线圈，使用具有不同直径的两个或更多个部分加热线圈10A，10B，这些线圈组合在一起，并分别设置在焊接部分2的一侧和另一侧，以便能够有效地产生与管道1的温度差。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2005351629A Shroud support plate 审中-公开
标题翻译： SHROUD支持板
公开(公告)号：JP2005351629A
公开(公告)日：2005-12-22
申请号：JP2004169289
申请日：2004-06-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YOSHIE YUTAKA , OTAKA MINORU , ITO TAKASHI
IPC分类号： G21C15/02 , G21C19/02
CPC分类号： Y02E30/31
摘要： PROBLEM TO BE SOLVED: To prevent the generation of a flow from a reactor bottom part side to an annulus part side by installing a block lid for blocking a penetration hole of a shroud support plate, and to thereby prevent the reduction of a core flow.
SOLUTION: This shroud support plate 7 used in a nuclear reactor is characterized by being provided with a shroud support plate penetration hole block lid 16 for blocking the penetration hole 14 provided in the shroud support plate 7.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了防止通过安装用于阻挡护罩支撑板的穿透孔的块盖来产生从反应器底部侧到环形部侧的流动，从而防止了核心流。解决方案：在核反应堆中使用的护罩支撑板7的特征在于设置有护罩支撑板穿透孔块盖16，用于阻挡设置在护罩支撑板7中的穿透孔14。 C）2006，JPO＆NCIPI

7. 发明专利

JP2005024376A Method for cleaning jet pump 审中-公开
标题翻译：清洗喷射泵的方法
公开(公告)号：JP2005024376A
公开(公告)日：2005-01-27
申请号：JP2003189947
申请日：2003-07-02
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , 日立エンジニアリング株式会社 , 株式会社日立製作所
发明人： SUGANO SATOSHI , YOSHIE YUTAKA , KUROSAWA KOICHI , MORINAKA TADASHI , ITO TAKASHI , ANAZAWA KAZUMI , HAYASHI EISAKU , AIZAWA MOTOHIRO
IPC分类号： G21C15/243 , G21C19/02 , G21F9/28
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a cleaning method for removing scale accumulating on the inner surface of a jet pump and pipes in a recirculation system in a boiling water reactor.
SOLUTION: An inlet mixer is detached from the jet pump located inside a reactor vessel and including the inlet mixer, a riser pipe and a diffuser to remove the scale accumulating on the inner surface of the inlet mixer, the riser pipe, the diffuser and the pipes in the recirculation system. Consequently, the scale accumulating on the inner surface of the jet pump and the pipes in the recirculation system in the boiling water reactor can be removed.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于去除在沸水反应器中的循环系统中的喷射泵和管道的内表面积垢的垢的清洁方法。解决方案：将入口混合器从位于反应器容器内的喷射泵分离，并包括入口混合器，提升管和扩散器，以去除积聚在入口混合器内表面上的标尺，提升管，扩散器和再循环系统中的管道。因此，可以除去积聚在喷射泵的内表面上的刻度和沸水反应器中的再循环系统中的管道。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2007039705A Method for reducing residual stress by using induction heating method 有权
标题翻译：使用感应加热方法减少残余应力的方法
公开(公告)号：JP2007039705A
公开(公告)日：2007-02-15
申请号：JP2005219866
申请日：2005-07-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKAHASHI SHIRO , MASUDA MINORU , HAYASHI SHOJI , YOSHIE YUTAKA
IPC分类号： C21D9/08 , C21D1/30 , C21D1/42 , G21D1/00
CPC分类号： Y02E30/40 , Y02P10/212 , Y02P10/253
摘要： PROBLEM TO BE SOLVED: To provide a method for sufficiently reducing a residual stress of such a portion as a decontamination port of a pipe in a recirculation system, at which a non-condensable gas stays. SOLUTION: This method for reducing the residual stress comprises the steps of: substituting vapor for the non-condensable gas which stays at the part to be executed to discharge the non-condensable gas from the inside of the part; further substituting water for the vapor which has substituted for the gas in the part; and then heating an outer surface of the part in a state of having filled the part with the water to generate temperature difference in a thickness direction of the part. The method can remove the non-condensable gas, and accordingly can sufficiently reduce the residual stress in the part at which the non-condensable gas stays. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于充分降低在不可冷凝气体停留的再循环系统中的管道的去污口的部分的残余应力的方法。解决方案：用于减少残余应力的方法包括以下步骤：将蒸气替换为待执行部分的不可冷凝气体，以从部件内部排放不可冷凝气体; 进一步取代水代替部分气体的蒸气; 然后在用水填充该部分的状态下加热部件的外表面，以在部件的厚度方向上产生温度差。该方法可以除去不可冷凝气体，从而可以充分降低不可冷凝气体停留的部分中的残余应力。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JPH08278390A SHROUD AND ITS REPAIRING METHOD 失效
公开(公告)号：JPH08278390A
公开(公告)日：1996-10-22
申请号：JP8275695
申请日：1995-04-07
申请人： HITACHI LTD
发明人： YOSHIE YUTAKA , ENDO AKIO , WATANABE YOSHIO , FURUKAWA HIDEYASU
IPC分类号： G21C5/10 , B23K9/167 , G21C19/02
摘要： PURPOSE: To provide a shroud and a repairing method for shroud capable of preventing crack generation and increase of the generated crack. CONSTITUTION: On the edge surfaces 41a, 41b, 42a and 42b of connection parts (diameter difference parts) 41 and 42 of shroud surface of which lamination of parent metal of a shroud 2 arranged in a reactor pressure vessel has exposed in contact with reactor water, melting treatment is applied by non-filler TIG welding, and the edge surfaces 41a, 41b, 42a and 42b are covered with molten metal 10 so that the initiation of cracking owing to lamination of plate material is avoided and progression is prevented.

10. 发明专利

JPH08233972A METHOD FOR REPLACING NUCLEAR REACTOR INTERNAL CONSTITUTION 失效
公开(公告)号：JPH08233972A
公开(公告)日：1996-09-13
申请号：JP3648795
申请日：1995-02-24
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： TSUJIMURA HIROSHI , KUROSAWA KOICHI , ONO SHIGEKI , UOZUMI HIROTO , TAKADA HIROSHI , WATANABE YOSHIO , ITO MASATO , NIHEI KENICHI , YOSHIE YUTAKA
IPC分类号： G21C13/00 , G21C19/02
摘要： PURPOSE: To contrive the reduction of a construction period, exposure reduction of workers, cost reduction or the like by establishing a method for replacing a shroud, an upper lattice plate and a reactor core support plate in accordance with a specific procedure. CONSTITUTION: A reactor pressure vessel upper cover 28, a drier 10 and a shroud head 11 are removed, and superimposed on DSP. Next, the whole fuel is taken out in a fuel pool, and removal is performed in order of control rods 12, control rod guide tube 13, guide rods, reactor core spray tubing 14, shrouds 2, an upper lattice plate 4 and a rector core support plate 5. Next, differential pressure reduction tubing 5 and SLC17 are cut and removed. After removal work completion reactor water is drained, the plates are previously centered, a new rector core shroud and a shroud support ring are welded and mounted on each other. After reactor core shroud installation completion the inspection of a welding part is performed by a remote-controlled inspection instrument, the tubing 5, SLC17 and the tubing 14 are restored by a remote-controlled specialized device, the devices for removing at the time of ordinary periodical inspection are set to the previous positions, and the whole working is completed.

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