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1. 发明专利

JP2004037087A Repair device, repair system, and repair method of narrow section in nuclear reactor 有权
公开(公告)号：JP2004037087A
公开(公告)日：2004-02-05
申请号：JP2002190228
申请日：2002-06-28
申请人： Babcock Hitachi Kk , Bab-Hitachi Industrial Co , Hestec Service Co Ltd , Hitachi Ltd , バブコック日立株式会社 , 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： KUROSAWA KOICHI , HIRANO KATSUHIKO , UMAHARA YOICHI , NAGASHIMA TOSHIJI , NITTA ICHIYO , CHIBA NOBORU
IPC分类号： G21C17/08 , G21C17/003 , G21C19/02
摘要： PROBLEM TO BE SOLVED: To safely and efficiently conduct checking works and repair works of a narrow section called an annulus part in a nuclear reactor pressure vessel.
SOLUTION: A shield body 15 is placed on a reactor pressure vessel flange 14 in the reactor pressure vessel 1 filled with cooling water. The cooling water is lowered down to the reactor pressure vessel flange 14 and a guide pipe 17 is inserted in the annulus 8 on the baffle plate 6 where jet pumps stand close together between the reactor pressure vessel 1 and a shroud 5. Cooling water in the reactor pressure vessel 1 is drained. A repair device 13 is inserted in the guide pipe 17 in the air state to send in the annulus part 8. By self-running the repair device 13 on the baffle plate 6, inspection and repair of members adjacent to the annulus part 8 are conducted.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2006297569A Material surface treatment method, and device therefor 有权
标题翻译：材料表面处理方法及其设备
公开(公告)号：JP2006297569A
公开(公告)日：2006-11-02
申请号：JP2005125857
申请日：2005-04-25
申请人： Bab-Hitachi Industrial Co , Hitachi Ltd , バブ日立工業株式会社 , 株式会社日立製作所
发明人： KUROSAWA KOICHI , SAITO NOBORU , NAGASHIMA TOSHIJI , NITTA ICHIYO , UNNO SHOICHI , HATO HISAMITSU
IPC分类号： B23P17/00 , C21D7/06 , C23F15/00
CPC分类号： Y02P10/212
摘要： PROBLEM TO BE SOLVED: To provide a residual stress improving method of efficiently generating cavitations in a material surface when a WJP (water-jet peening) is applied to the material surface, and a device for use in the method, and to provide a residual stress improving method for reducing corrosion of the material surface which is fractured by impact pressure at the time of collapse of cavitation bubbles when the WJP is applied to the material surface, and a device for use in the method. SOLUTION: According to the material surface treatment method, magnetized water is ejected from a jet nozzle 2 to the surface of a material 14, and by using the impact pressure generated by the collapse of the cavitation bubbles accompanying the magnetized water, the compressed residual stress is applied to the material. Thus when the WJP is applied to the material surface, the cavitations are efficiently generated on the surface. Further when the WJP is applied to the material surface, the corrosion of the material surface fractured by the impact pressure generated at the time of the collapse of the cavitation bubbles, can be reduced. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种在对材料表面施加WJP（喷水喷丸处理）时有效地产生材料表面的空穴的残余应力改善方法，以及用于该方法的装置，以及提供了一种残余应力改善方法，用于减少在将WJP施加到材料表面时气蚀泡破裂时由冲击压力破裂的材料表面的腐蚀，以及用于该方法的装置。解决方案：根据材料表面处理方法，磁化水从喷嘴2喷射到材料14的表面，并且通过使用伴随磁化水的气蚀气泡的崩溃产生的冲击压力，对材料施加压缩的残余应力。因此，当将WJP施加到材料表面时，在表面上有效地产生空穴。此外，当将WJP施加到材料表面时，可以减少由于空化气泡破裂时产生的冲击压力破裂的材料表面的腐蚀。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2006095623A Method and device for improving residual stress in pipe inner surface by water jet peening 有权
标题翻译：通过水喷射改善管内表面残留应力的方法和装置
公开(公告)号：JP2006095623A
公开(公告)日：2006-04-13
申请号：JP2004282941
申请日：2004-09-29
申请人： Bab-Hitachi Industrial Co , Hitachi Ltd , バブ日立工業株式会社 , 株式会社日立製作所
发明人： KUROSAWA KOICHI , SAITO NOBORU , NITTA ICHIYO , UNNO SHOICHI
IPC分类号： B23P17/00 , B26F3/00
摘要： PROBLEM TO BE SOLVED: To provide a method for improving residual stress in a pipe inner surface by applying water jet peening to the pipe inner surface, and causing collapse of grown cavitation foam in the pipe inner surface, and to provide a device therefor. SOLUTION: The method is carried out by holding a pipe 40 having openings at both edges with a holding device 9, blocking one of the pipe edges, inserting an ejection nozzle 1 from the other pipe edge into the pipe, and ejecting a liquid fed to the ejection nozzle into the pipe via the ejection nozzle at an inclination of 9° or less with respect to an axis of the pipe, to thereby generate back-flow of the liquid ejected from the ejection nozzle, in the pipe. Thus the residual stress in the pipe inner surface is improved by impact pressure caused by collapse of the cavitation foam accompanying the liquid. According to the method a collision distance from a nozzle ejection hole to the pipe inner surface is set to a value equal to a distance of growth of the cavitation, and the grown cavitation is collided against the pipe inner surface. As a result, the impact pressure generated at the time of collapsing of the cavitation can be applied to the pipe inner surface, and therefore the residual stress in the pipe inner surface can be improved. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种通过对管内表面施加喷水喷丸以改善管内表面中的残余应力的方法，并且使管内表面中生长的气穴泡沫破裂，并提供一种装置为此。解决方案：该方法通过在保持装置9的两个边缘处保持具有开口的管40来实现，阻塞一个管边缘，将喷嘴1从另一个管边缘插入管中，并且弹出液体通过喷嘴以相对于管的轴线为9°或更小的倾角通过喷嘴供给到管中，从而在管中产生从喷嘴喷射的液体的回流。因此，通过伴随液体的气蚀泡沫的崩溃引起的冲击压力，管内表面中的残余应力得到改善。根据该方法，从喷嘴喷射孔到管内表面的碰撞距离设定为等于空化生长距离的值，并且生长的空化与管内表面碰撞。结果，能够在管内表面上施加气蚀塌陷时产生的冲击压力，能够提高管内表面的残留应力。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2008155345A Residual stress evaluation method for waterjet peening processed surface 有权
标题翻译：用于水喷涂处理表面的残余应力评估方法
公开(公告)号：JP2008155345A
公开(公告)日：2008-07-10
申请号：JP2006349448
申请日：2006-12-26
申请人： Bab-Hitachi Industrial Co , Hitachi-Ge Nuclear Energy Ltd , バブ日立工業株式会社 , 日立Geニュークリア・エナジー株式会社
发明人： SAITO NOBORU , HATO HISAMITSU , KUROSAWA KOICHI , KASHIWAKURA JUN , MORINAKA TADASHI , NITTA ICHIYO
IPC分类号： B23P17/00 , G01N3/42 , G01N21/84
摘要： PROBLEM TO BE SOLVED: To provide a residual stress evaluation method capable of nondestructively evaluating residual stress on a waterjet peening processed surface in a reactor.
SOLUTION: Peening traces are sampled from an image photographed the waterjet peening processed surface. The whole area or the number of peening traces per unit area is measured. Then, the residual stress is evaluated by substituting it into a relational expression between the residual stress and the whole area or the number of peening traces, prepared in advance. Or, a surface area increasing rate after and before peening work is calculated, and the residual stress is evaluated by substituting it into a relational expression between the residual stress and surface area increasing rate, prepared in advance. Thus, the residual stress on the peening processed surface is nondestructively evaluated under internal circumstances in the nuclear reactor.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够非破坏性地评估反应器中的喷水喷丸处理表面上的残余应力的残余应力评价方法。解决方案：从拍摄喷水喷丸处理表面的图像中取样喷丸。测量每单位面积的整个面积或喷丸数量。然后，通过将其替换为预先制备的残余应力与整个面积或喷丸数量之间的关系式来评估残余应力。或者，计算喷丸加工前后的表面积增加率，通过将残留应力代入预先制备的残余应力和表面积增加率之间的关系式来评价残余应力。因此，在核反应堆的内部情况下，对喷丸处理表面的残余应力进行非破坏性评估。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2002168992A METHOD FOR REPAIR OF INSIDE REACTOR PRESSURE VESSEL, AND REPAIRING DEVICE 失效
公开(公告)号：JP2002168992A
公开(公告)日：2002-06-14
申请号：JP2000365807
申请日：2000-11-30
申请人： HITACHI LTD , BABCOCK HITACHI KK , BAB HITACHI IND CO , HESTEC SERVICE CO LTD
发明人： KUROSAWA KOICHI , UMAHARA YOICHI , NAGASHIMA TOSHIJI , NITTA ICHIYO , GO SHINJI , SUZUKI YOSHINORI , HIRANO KATSUHIKO
IPC分类号： G21C19/02 , G21C17/007
摘要： PROBLEM TO BE SOLVED: To provide a method for repair of a inside of reactor pressure vessel, and a repairing device permitting repairing work at an annulus part of the reactor pressure vessel to be easily conducted in a short time. SOLUTION: Recirculation piping 72 connected to a recirculation nozzle 2 of the reactor pressure vessel 1 is cut to form an opening part 3, a repairing device is carried into the annulus part 10 of the reactor pressure vessel 1 from this opening part 3, and repair to the inside of annulus part 10 is conducted.

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