公开(公告)号：US5329099A

公开(公告)日：1994-07-12

申请号：US704289

申请日：1991-05-22

申请人： Kunio Enomoto ,  Masahiro Otaka ,  Kunio Hasegawa ,  Makoto Hayashi ,  Shinji Sakata ,  Hideyo Saito ,  Koichi Kurosawa ,  Takashi Saito ,  Yoshinori Karatsu ,  Motoya Ito

发明人： Kunio Enomoto ,  Masahiro Otaka ,  Kunio Hasegawa ,  Makoto Hayashi ,  Shinji Sakata ,  Hideyo Saito ,  Koichi Kurosawa ,  Takashi Saito ,  Yoshinori Karatsu ,  Motoya Ito

IPC分类号： G21C19/02 ,  B23K13/01 ,  G21C13/00 ,  G21C13/087 ,  G21C17/10 ,  G21C19/20

CPC分类号： B23K13/01 ,  G21C13/00 ,  G21C13/087 ,  G21Y2002/201 ,  G21Y2002/202 ,  G21Y2004/201 ,  G21Y2004/40 ,  Y02E30/40

摘要： A method of maintaining the housing of a reactor pressure vessel having: a reactor pressure vessel into which cooling water is introduced; a cylindrical housing which penetrates an end bracket of the reactor pressure vessel; and a circumferential weld for securing the intermediate portion of the housing to the reactor pressure vessel by welding, the method of maintaining a housing of a reactor pressure vessel comprising the steps of: remaining the cooling water in the reactor pressure vessel; preventing leakage of the cooling water in the reactor pressure vessel through the housing by sealing the housing; making the inside portion of the housing lower than the seal to be a hollow space of a gas atmosphere; heating a heat affected zone due to welding by using a heating device inserted into the hollow space from a lower portion so as to compressive-yield the inner surface of the housing in the heat affected portion upper than the circumferential weld and tensile-yield the outer surface; and cooling heated portion inside of the housing, which has been yielded, so as to tensile-yield the inner surface of the housing by using a cooling device inserted into the housing from a lower portion, whereby compressive stress is allowed to remain in the tensile-yielded portion.

摘要翻译： 一种维持反应堆压力容器的壳体的方法，该反应堆压力容器具有：引入冷却水的反应堆压力容器; 圆柱形壳体，其穿过反应堆压力容器的端部支架; 以及用于通过焊接将壳体的中间部分固定到反应堆压力容器的圆周焊缝，保持反应堆压力容器的壳体的方法，包括以下步骤：在反应堆压力容器中保留冷却水; 防止反应堆压力容器内的冷却水通过密封壳体而通过壳体泄漏; 使壳体的内部低于密封件成为气体气氛的中空空间; 通过使用从下部插入到中空空间中的加热装置来加热受热影响区域，以便在高于周向焊缝的热影响部分中压缩屈服于壳体的内表面并拉伸屈服外侧 表面; 以及已经产生的壳体内部的冷却加热部分，以便通过使用从下部插入到壳体中的冷却装置来拉伸屈服壳体的内表面，由此使压缩应力保持在拉伸 硬部分。

公开(公告)号：US5305361A

公开(公告)日：1994-04-19

申请号：US8718

申请日：1993-01-25

申请人： Kunio Enomoto ,  Masahiro Otaka ,  Koichi Kurosawa ,  Hideyo Saito ,  Hiroshi Tsujimura ,  Yasumasa Tamai ,  Keiichi Uraki ,  Masahito Mochizuki

发明人： Kunio Enomoto ,  Masahiro Otaka ,  Koichi Kurosawa ,  Hideyo Saito ,  Hiroshi Tsujimura ,  Yasumasa Tamai ,  Keiichi Uraki ,  Masahito Mochizuki

IPC分类号： C21D7/04 ,  B05B15/06 ,  B05B17/06 ,  B24C1/10 ,  C21D7/06 ,  G21C19/00 ,  G21D1/00

CPC分类号： G21C19/00 ,  B05B15/061 ,  B05B17/0615 ,  C21D7/06 ,  G21Y2002/201 ,  G21Y2004/30 ,  G21Y2004/40

摘要： A water jet peening method in which a pressurized water jet flow containing cavities is jetted through a nozzle having a velocity increasing orifice portion and a horn-like jetting hole formed continuously with the velocity increasing orifice portion to impinge against a surface of a metallic material immersed in water and to cause the cavities to collapse at the surface of the metallic member, and a tensile plastic deformation is caused in a surface layer of the metallic material by a local high pressure generated by the impingement and the collapse so that a residual tensile stress in the surface of the metallic member is reduced. In this method, the nozzle is vibrated so that vibration-induced cavities are formed in the vicinity of a nozzle wall surface, and the vibration-induced cavities are caused to impinge against the surface of the metallic member by the pressurized water jet flow containing cavities. It is thereby possible to promote the generation of cavities even in a case where pure water existing in a nuclear reactor and scant of nuclei from which cavities will be generated is used in peening of an internal structual member of the reactor.

摘要翻译： 一种喷水喷丸法，其中通过具有速度增加孔部分的喷嘴喷射含有空腔的加压水射流，并且与增速孔部分连续形成的喇叭形喷射孔冲击浸入金属材料的表面 并导致空腔在金属构件的表面处塌陷，并且通过由冲击和塌陷产生的局部高压在金属材料的表面层中引起拉伸塑性变形，使得残余拉伸应力 在金属构件的表面减少。 在该方法中，喷嘴被振动，使得在喷嘴壁表面附近形成振动引起的空腔，并且使振动引起的空腔通过包含加压水射流的空腔与金属构件的表面碰撞 。 因此，即使在核反应堆中存在的纯水和将产生空腔的细小核的情况下，也可以促进空腔的产生，从而在反应器的内部结构构件的喷丸处理中使用。

公开(公告)号：US5059903A

公开(公告)日：1991-10-22

申请号：US247414

申请日：1988-09-21

申请人： Masahiro Otaka ,  Kunio Enomoto ,  Kunio Hasegawa ,  Makoto Hayashi ,  Tasuku Shimizu ,  Kazuo Takaku

发明人： Masahiro Otaka ,  Kunio Enomoto ,  Kunio Hasegawa ,  Makoto Hayashi ,  Tasuku Shimizu ,  Kazuo Takaku

IPC分类号： G01N17/00 ,  G01N27/72

CPC分类号： G01N27/72 ,  G01N17/00 ,  Y10S505/846

摘要： On the basis of a finding that a magnetic hysteresis of a metal material, among magnetization characteristics changing with secular degradation of the metal material, shows a clear correspondence with the degree of degradation of the metal material, a change in such a magnetization characteristic is measured to estimate the degree of secular degradation of the metal material, In a typical embodiment, a superconducting quantum interference device is used to detect the magnetization characteristic of a measuring object. According to the present invention, the degree of embrittlement of a metal material used in an environment of high temperatures can be quickly detected in a non-destructive fashion so that the danger of brittle fracture of the metal material can be reliably prevented.

公开(公告)号：US5414356A

公开(公告)日：1995-05-09

申请号：US738240

申请日：1991-07-30

申请人： Toshihiko Yoshimura ,  Tasuku Shimizu ,  Yuichi Ishikawa ,  Masahiro Otaka ,  Yuko Koguchi ,  Kunio Enomoto ,  Kunio Hasegawa ,  Makoto Hayashi ,  Kazuo Takaku

发明人： Toshihiko Yoshimura ,  Tasuku Shimizu ,  Yuichi Ishikawa ,  Masahiro Otaka ,  Yuko Koguchi ,  Kunio Enomoto ,  Kunio Hasegawa ,  Makoto Hayashi ,  Kazuo Takaku

IPC分类号： G01N17/00 ,  G01N27/72 ,  G01R33/035 ,  G01R33/12 ,  H01F17/04

CPC分类号： G01R33/0358 ,  G01N17/00 ,  G01N27/72

摘要： A fluxmeter includes an application unit for applying a magnetic field, a superconducting quantum interference element and a flux transmitting circuit. The flux transmitting circuit includes a pickup coil formed of a superconducting print coil and a core for the pickup coil. The core is formed of a soft magnetic material. The core serves to suppress the leakage of magnetic flux to magnetically couple the pickup coil and the superconducting quantum interference element efficiently to improve the sensitivity and resolution of the fluxmeter. The pickup coil may be manufactured by photolithography, sputtering, laser beam deposition, MBE deposition, MOCVD or spray pyrolysis.

摘要翻译： 磁通计包括用于施加磁场的应用单元，超导量子干涉元件和磁通发射电路。 通量传输电路包括由超导印刷线圈和用于拾取线圈的芯构成的拾取线圈。 芯由软磁材料形成。 磁芯用于抑制磁通量的泄漏，以有效地磁耦合拾波线圈和超导量子干涉元件，以提高磁通计的灵敏度和分辨率。 拾取线圈可以通过光刻，溅射，激光束沉积，MBE沉积，MOCVD或喷雾热解来制造。

公开(公告)号：US5134368A

公开(公告)日：1992-07-28

申请号：US611426

申请日：1990-11-08

申请人： Masahiro Otaka ,  Kunio Enomoto ,  Kunio Hasegawa ,  Makoto Hayashi ,  Tasuku Shimizu ,  Kazuo Takaku

发明人： Masahiro Otaka ,  Kunio Enomoto ,  Kunio Hasegawa ,  Makoto Hayashi ,  Tasuku Shimizu ,  Kazuo Takaku

IPC分类号： G01N17/00 ,  G01N27/72

CPC分类号： G01N27/72 ,  G01N17/00 ,  Y10S505/846

摘要： On the basis of a finding that a magnetic hysteresis of a metal material, among magnetization characteristics changing with secular degradation of the metal material, shows a clear correspondence with the degree of degradation of the metal material, a change in such a magnetization characteristic is measured to estimate the degree of secular degradation of the metal material. In a typical embodiment, a superconducting quantum interference device is used to detect the magnetization characteristic of a measuring object. According to the present invention, the degree of embrittlement of a metal material used in an environment of high temperatures can be quickly detected in a non-destructive fashion so that the danger of brittle fracture of the metal material can be reliably prevented.

摘要翻译： 基于金属材料的磁滞特性随着金属材料的长期劣化而变化的磁化特性与金属材料的劣化程度明显对应的结果，测量了这种磁化特性的变化 以估计金属材料的长期退化程度。 在典型的实施例中，超导量子干涉装置用于检测测量对象的磁化特性。 根据本发明，可以以非破坏性的方式快速地检测在高温环境中使用的金属材料的脆化程度，从而可以可靠地防止金属材料脆性断裂的危险。

公开(公告)号：US5749384A

公开(公告)日：1998-05-12

申请号：US409689

申请日：1995-03-24

申请人： Eisaku Hayashi ,  Koichi Kurosawa ,  Fujio Yoshikubo ,  Hideyasu Furukawa ,  Ren Morinaka ,  Kunio Enomoto ,  Masahiro Otaka ,  Noboru Chiba ,  Kazunori Sato

发明人： Eisaku Hayashi ,  Koichi Kurosawa ,  Fujio Yoshikubo ,  Hideyasu Furukawa ,  Ren Morinaka ,  Kunio Enomoto ,  Masahiro Otaka ,  Noboru Chiba ,  Kazunori Sato

IPC分类号： G21D1/00 ,  B08B9/02 ,  B08B9/093 ,  C21D7/06 ,  G21C13/00 ,  G21C13/036 ,  G21C19/02

CPC分类号： B08B9/023 ,  B08B9/093 ,  C21D7/06 ,  G21C13/036 ,  G21Y2002/103 ,  G21Y2004/20 ,  Y02E30/40

摘要： An apparatus preventive maintenance having a driving mechanism capable of driving a jet nozzle 24 to cause it to travel upward-and-downward, to rotate and to swing is settled on the top of a housing in the bottom portion of a reactor pressure vessel and on a hole for a fuel support piece, water pumped by a high pressure pump is spouted from a jet nozzle, and cavitation bubbles generated during the spouting are supplied to the positions to be treated for preventive maintenance, such as housings in the bottom portion of the reactor pressure vessel. Therewith, the residual tensile stress in the position to be treated is improved in a releasing direction by the energy generated by the collapsing of the cavitation bubbles.

摘要翻译： 具有能够驱动喷嘴24以使其上下移动以旋转和摆动的驱动机构的装置预防性维护在反应堆压力容器的底部的壳体的顶部上沉降，并且在 用于燃料支撑件的孔，由高压泵泵送的水从喷嘴喷出，并且在喷射期间产生的空化气泡被供给到预防性维护的待处理位置，例如在底部的壳体 反应堆压力容器。 因此，通过由空化气泡塌缩产生的能量，在待处理位置的残余拉伸应力在释放方向上得到改善。

公开(公告)号：US5553106A

公开(公告)日：1996-09-03

申请号：US490245

申请日：1995-06-14

申请人： Kunio Enomoto ,  Masahiro Otaka ,  Kazuo Amano ,  Koichi Kurosawa ,  Eisaku Hayashi ,  Ren Morinaka ,  Shigeo Hattori ,  Kasunori Sato

发明人： Kunio Enomoto ,  Masahiro Otaka ,  Kazuo Amano ,  Koichi Kurosawa ,  Eisaku Hayashi ,  Ren Morinaka ,  Shigeo Hattori ,  Kasunori Sato

IPC分类号： C21D7/06 ,  G21C13/087 ,  G21C19/00

CPC分类号： C21D7/06 ,  G21C13/087 ,  G21Y2002/10 ,  G21Y2002/301 ,  G21Y2004/20 ,  G21Y2004/302 ,  G21Y2004/50 ,  Y02E30/40

摘要： Low temperature water in a low temperature water tank 12 installed outside a reactor pressure vessel 9 is pumped by a high pressure pump 15 and supplied through a conductor 17 under pressure. The supplied water is ejected, as a stream of cold water jet 8, from a nozzle 14 connected to the conductor 17 and introduced into the reactor pressure vessel 9 by a driving mechanism. The stream of cold water jet 8 ejected from the nozzle 14 is directed to impinge against a predetermined position of a core shroud 13 in reactor water 11 filled in the reactor pressure vessel 9 and being at temperature higher than the low temperature water. Then, while continuing to eject the cold water jet 8 from the nozzle 14, the nozzle 14 is moved away from the predetermined position, or the ejection of the cold water jet 8 from the nozzle 14 is stopped, allowing the predetermined position to be heated again with the temperature of the reactor water 11. A thermal shock is thereby applied to the predetermined position for improvement in residual stress of the core shroud 13.

摘要翻译： 安装在反应堆压力容器9外部的低温水箱12中的低温水被高压泵15泵送并通过导体17在压力下供给。 供给的水作为冷水喷射流8从连接到导体17的喷嘴14喷射，并通过驱动机构引入反应堆压力容器9。 从喷嘴14排出的冷水喷射流8被引向冲击填充在反应堆压力容器9中的反应器水11中的核心护罩13的预定位置，并且温度高于低温水。 然后，在从喷嘴14继续喷出冷水射流8的同时，使喷嘴14远离预定位置移动，或者停止从喷嘴14排出冷水喷射8，使预定位置被加热 再次用反应器水11的温度。因此，热冲击被施加到预定位置，以改善芯护罩13的残余应力。

公开(公告)号：US5897062A

公开(公告)日：1999-04-27

申请号：US733926

申请日：1996-10-18

申请人： Kunio Enomoto ,  Katsuhiko Hirano ,  Masahiro Otaka ,  Kazuo Amano ,  Eisaku Hayashi ,  Sadato Shimizu ,  Ren Morinaka ,  Kazunori Sato

发明人： Kunio Enomoto ,  Katsuhiko Hirano ,  Masahiro Otaka ,  Kazuo Amano ,  Eisaku Hayashi ,  Sadato Shimizu ,  Ren Morinaka ,  Kazunori Sato

IPC分类号： B23K31/00 ,  B05B1/00 ,  E21B7/18

CPC分类号： B05B1/02 ,  B05B1/34 ,  B05B1/08 ,  G21C17/0225

摘要： A fluid jet nozzle has a water chamber accommodating therein pressurized fluid, an orifice communicating with the water chamber and contracting the fluid from the water chamber, a throat communicating with the orifice and through which the fluid from the orifice passes, a multiplication chamber communicating with the throat and receiving the fluid from the throat for multiplying cavitation, and a diffusion chamber receiving the fluid from the multiplication chamber for diffusing the fluid.

摘要翻译： 流体喷嘴具有容纳加压流体的水室，与水室连通并且从水室收缩流体的孔口，与孔口连通的喉部，来自孔口的流体通过该喉管，与 喉部并且接收来自喉部的流体以使气蚀倍增，以及扩散室，其接收来自乘法室的流体，用于扩散流体。

公开(公告)号：US6058153A

公开(公告)日：2000-05-02

申请号：US26726

申请日：1998-02-20

申请人： Koichi Kurosawa ,  Eisaku Hayashi ,  Sadato Shimizu ,  Minoru Ootaka ,  Fujio Yoshikubo ,  Ren Morinaka ,  Masayuki Nishino ,  Noboru Chiba ,  Kunio Enomoto ,  Kazunori Sato

发明人： Koichi Kurosawa ,  Eisaku Hayashi ,  Sadato Shimizu ,  Minoru Ootaka ,  Fujio Yoshikubo ,  Ren Morinaka ,  Masayuki Nishino ,  Noboru Chiba ,  Kunio Enomoto ,  Kazunori Sato

IPC分类号： G21C19/00 ,  G21C17/00 ,  G21C17/003

CPC分类号： G21C19/00 ,  G21C19/207 ,  G21Y2002/203 ,  G21Y2002/40 ,  G21Y2004/501 ,  G21Y2004/504

摘要： A preventive maintenance apparatus for structural members inside a nuclear reactor pressure vessel includes a ring-shaped guide rail having a plurality of lugs which is placed on an upper flange of a core shroud provided inside a reactor pressure vessel. At least some of lugs separately engage with a plurality of guide rods provided on an inner surface of the reactor pressure vessel. A turntable is rotated on the guide rail. A first discharging nozzle moving apparatus placed on the turntable moves a first discharging nozzle for adding compressive remaining stress to an outer surface of the core shroud in a radial direction of the core shroud and in an axial direction of the core shroud. A second discharging nozzle moving apparatus placed on the turntable moves a second discharging nozzle for adding compressive remaining stress to an inner surface of the core shroud in a radial direction of the core shroud and in an axial direction of the core shroud.

摘要翻译： 核反应堆压力容器内的结构构件的预防性维护装置包括具有多个凸耳的环形导轨，所述多个凸耳被放置在设置在反应堆压力容器内的芯护罩的上凸缘上。 至少一些凸耳与设置在反应堆压力容器的内表面上的多个导杆分开接合。 转盘在导轨上旋转。 放置在转台上的第一排放喷嘴移动装置移动第一排放喷嘴，用于在核心护罩的径向方向和芯套管的轴向方向上向芯护罩的外表面增加压缩剩余应力。 放置在转盘上的第二排放喷嘴移动装置移动第二排放喷嘴，用于在芯护罩的径向方向和芯套管的轴向方向上向芯护罩的内表面增加压缩剩余应力。

公开(公告)号：US4772336A

公开(公告)日：1988-09-20

申请号：US15624

申请日：1987-02-17

申请人： Kunio Enomoto ,  Tasuku Shimizu ,  Shinji Sakata ,  Terunobu Koike ,  Nobuo Shimizu ,  Tsukasa Ikegami

发明人： Kunio Enomoto ,  Tasuku Shimizu ,  Shinji Sakata ,  Terunobu Koike ,  Nobuo Shimizu ,  Tsukasa Ikegami

IPC分类号： B23K31/00 ,  C21D7/02 ,  C21D9/50

CPC分类号： C21D9/50

摘要： A method for improving residual stress in a circumferential weld zone of a piping and the like which includes preventing deformation of the weld zone, and causing a local expansion or contraction of a portion of the piping axially spaced from the weld zone thereby effecting a plastic working so as to increase or decrease the diameter of piping. The method can effectively be applied to apparatus and pipe system which are used in a corrosive environment and under action of a static or dynamic outer load.

摘要翻译： 一种用于改善管道等的周向焊接区域中的残余应力的方法，其包括防止焊接区域的变形，并且使得管道的一部分的局部膨胀或收缩与焊接区域轴向间隔开，从而实现塑性加工 以便增加或减少管道的直径。 该方法可以有效地应用于在腐蚀性环境中和静态或动态外部负载作用下使用的设备和管道系统。