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1. 发明授权

US08776565B2 Evaluation method of residual stress in water jet peening and method of executing water jet peening 有权
标题翻译：喷水喷丸硬化残余应力评价方法及喷水喷丸喷丸处理方法
公开(公告)号：US08776565B2
公开(公告)日：2014-07-15
申请号：US13036223
申请日：2011-02-28
申请人： Hisamitu Hatou , Noboru Saitou , Kouichi Kurosawa , Fujio Yoshikubo , Yuji Matsui , Masashi Fukaya
发明人： Hisamitu Hatou , Noboru Saitou , Kouichi Kurosawa , Fujio Yoshikubo , Yuji Matsui , Masashi Fukaya
IPC分类号： C21D7/06
CPC分类号： B23P9/04 , C21D1/54 , C21D7/04 , C21D7/06
摘要： An evaluation method of residual stress in water jet peening includes a step of creating an analytical model including meshes according to a water jet peening (WJP) object, the shape of a nozzle, and an injection distance, a step of inputting WJP execution conditions, a step of calculating the internal pressure pBi of a cavitation bubble and a bubble number density ngi through jet flow analysis for a jet flow jetting from the nozzle, a step of calculating cavitation energy according to the internal pressure pBi of a cavitation bubble and a bubble number density ngi (S4), a step of calculating the burst energy of cavitation bubbles from the cavitation energy C, and a step of calculating the compressive residual stress of the WJP object from the collapse pressure of cavitation bubbles. Accordingly, the residual stress of the WJP object can be evaluated precisely in a shorter time.
摘要翻译：水喷射喷丸硬化的残余应力的评价方法包括：创建包括水喷射喷丸（WJP）对象的网孔，喷嘴形状和喷射距离的分析模型的步骤，输入WJP执行条件的步骤，通过从喷嘴喷射的喷射流的喷射流分析来计算空化气泡的内部压力pBi和气泡数密度ngi的步骤，根据空化气泡和气泡的内部压力pBi计算空化能量的步骤数值密度ngi（S4），从空化能量C计算空化气泡的爆发能量的步骤，以及从空化气泡的塌陷压力计算WJP物体的压缩残余应力的步骤。因此，可以在更短的时间内精确地评估WJP物体的残余应力。

2. 发明申请

US20110232348A1 EVALUATION METHOD OF RESIDUAL STRESS IN WATER JET PEENING AND METHOD OF EXECUTING WATER JET PEENING 有权
标题翻译：水喷射器中残余应力的评估方法和执行水喷射的方法
公开(公告)号：US20110232348A1
公开(公告)日：2011-09-29
申请号：US13036223
申请日：2011-02-28
申请人： Hisamitu HATOU , Noboru Saitou , Kouichi Kurosawa , Fujio Yoshikubo , Yuji Matsui , Masashi Fukaya
发明人： Hisamitu HATOU , Noboru Saitou , Kouichi Kurosawa , Fujio Yoshikubo , Yuji Matsui , Masashi Fukaya
IPC分类号： B24C1/10 , G01L1/00 , G06F19/00
CPC分类号： B23P9/04 , C21D1/54 , C21D7/04 , C21D7/06
摘要： An evaluation method of residual stress in water jet peening includes a step of creating an analytical model including meshes according to a water jet peening (WJP) object, the shape of a nozzle, and an injection distance, a step of inputting WJP execution conditions, a step of calculating the internal pressure pBi of a cavitation bubble and a bubble number density ngi through jet flow analysis for a jet flow jetting from the nozzle, a step of calculating cavitation energy according to the internal pressure pBi of a cavitation bubble and a bubble number density ngi (S4), a step of calculating the burst energy of cavitation bubbles from the cavitation energy C, and a step of calculating the compressive residual stress of the WJP object from the collapse pressure of cavitation bubbles. Accordingly, the residual stress of the WJP object can be evaluated precisely in a shorter time.
摘要翻译：水喷射喷丸硬化的残余应力的评价方法包括：创建包括水喷射喷丸（WJP）对象的网孔，喷嘴形状和喷射距离的分析模型的步骤，输入WJP执行条件的步骤，通过从喷嘴喷射的喷射流的喷射流分析来计算空化气泡的内部压力pBi和气泡数密度ngi的步骤，根据空化气泡和气泡的内部压力pBi计算空化能量的步骤数值密度ngi（S4），从空化能量C计算空化气泡的爆发能量的步骤，以及从空化气泡的塌陷压力计算WJP物体的压缩残余应力的步骤。因此，可以在更短的时间内精确地评估WJP物体的残余应力。

3. 发明授权

US08387427B2 Water jet peening method and apparatus thereof 有权
标题翻译：喷水喷丸处理方法及装置
公开(公告)号：US08387427B2
公开(公告)日：2013-03-05
申请号：US12830169
申请日：2010-07-02
申请人： Yuji Matsui , Masahiro Tooma , Atsushi Baba , Kouichi Kurosawa , Fujio Yoshikubo
发明人： Yuji Matsui , Masahiro Tooma , Atsushi Baba , Kouichi Kurosawa , Fujio Yoshikubo
IPC分类号： B21D7/06
CPC分类号： C21D7/06 , C21D11/00
摘要： A high-pressure water jet is injected from a nozzle scanned and a shock wave generated due to the collapse of bubbles included in the water jet is impacted on a WJP execution object. Tensile residual stress close to the surface of the WJP execution object is improved to compressive residual stress. The shock wave is detected by a pressure sensor and a shock wave generation frequency is obtained. Whether the obtained shock wave generation frequency is larger than a set value or not is decided. When the shock wave generation frequency is larger than the set value, a high-pressure pump is stopped and the injection of the water jet from the nozzle is stopped. When the shock wave generation frequency is equal to or smaller than the set value, the operation condition of the high-pressure pump is changed. The pressure of the water jet injected from the nozzle is increased and the WJP is executed for a part of the WJP execution object where the shock wave generation frequency is equal to or smaller than the set value. Improvement effect of the residual stress of the WJP execution object can be confirmed more accurately.
摘要翻译：从扫描的喷嘴喷射高压水射流，并且由于包含在水射流中的气泡的崩溃而产生的冲击波被冲击到WJP执行对象上。靠近WJP执行物体表面的拉伸残余应力提高到压缩残余应力。通过压力传感器检测冲击波，获得冲击波产生频率。确定获得的冲击波产生频率是否大于设定值。当冲击波产生频率大于设定值时，停止高压泵并停止喷嘴的喷射。当冲击波产生频率等于或小于设定值时，改变高压泵的运行状态。从喷嘴喷射的喷水的压力增加，对于冲击波产生频率等于或小于设定值的WJP执行对象的一部分执行WJP。可以更准确地确认WJP执行对象的残余应力的改善效果。

4. 发明申请

US20110005288A1 Water Jet Peening Method and Apparatus Thereof 有权
标题翻译：喷水喷丸处理方法及装置
公开(公告)号：US20110005288A1
公开(公告)日：2011-01-13
申请号：US12830169
申请日：2010-07-02
申请人： Yuji MATSUI , Masahiro Tooma , Atsushi Baba , Kouichi Kurosawa , Fujio Yoshikubo
发明人： Yuji MATSUI , Masahiro Tooma , Atsushi Baba , Kouichi Kurosawa , Fujio Yoshikubo
IPC分类号： B21D26/02
CPC分类号： C21D7/06 , C21D11/00
摘要： A high-pressure water jet is injected from a nozzle scanned and a shock wave generated due to the collapse of bubbles included in the water jet is impacted on a WJP execution object. Tensile residual stress close to the surface of the WJP execution object is improved to compressive residual stress. The shock wave is detected by a pressure sensor and a shock wave generation frequency is obtained. Whether the obtained shock wave generation frequency is larger than a set value or not is decided. When the shock wave generation frequency is larger than the set value, a high-pressure pump is stopped and the injection of the water jet from the nozzle is stopped. When the shock wave generation frequency is equal to or smaller than the set value, the operation condition of the high-pressure pump is changed. The pressure of the water jet injected from the nozzle is increased and the WJP is executed for a part of the WJP execution object where the shock wave generation frequency is equal to or smaller than the set value. Improvement effect of the residual stress of the WJP execution object can be confirmed more accurately.
摘要翻译：从扫描的喷嘴喷射高压水射流，并且由于包含在水射流中的气泡的崩溃而产生的冲击波被冲击到WJP执行对象上。靠近WJP执行物体表面的拉伸残余应力提高到压缩残余应力。通过压力传感器检测冲击波，获得冲击波产生频率。确定获得的冲击波产生频率是否大于设定值。当冲击波产生频率大于设定值时，停止高压泵并停止喷嘴的喷射。当冲击波产生频率等于或小于设定值时，改变高压泵的运行状态。从喷嘴喷射的喷水的压力增加，对于冲击波产生频率等于或小于设定值的WJP执行对象的一部分执行WJP。可以更准确地确认WJP执行对象的残余应力的改善效果。

5. 发明授权

US6058153A Preventive maintenance apparatus for structural members in a nuclear pressure vessel 失效
标题翻译：核压力容器中结构构件的预防性维护装置
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。

6. 发明授权

US5749384A Method and apparatus for performing preventive maintenance on the bottom portion of a reactor pressure vessel using cavitation bubbles 失效
标题翻译：使用空化气泡对反应堆压力容器的底部进行预防性维护的方法和装置
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。

7. 发明授权

US06240155B1 Preventive maintenance apparatus for structural members in a nuclear pressure vessel 有权
标题翻译：核压力容器中结构构件的预防性维护装置
公开(公告)号：US06240155B1
公开(公告)日：2001-05-29
申请号：US09366720
申请日：1999-08-04
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： G21C1700
CPC分类号： G21C19/00 , G21C19/207 , G21Y2002/203 , G21Y2002/40 , G21Y2004/501 , G21Y2004/504
摘要： A method of performing maintenance on a structural member inside a reactor pressure vessel includes lowering an annular guide rail having a second lug until the guide rail rests on an upper flange of a core shroud provided inside the reactor pressure vessel, detachably mounting the second lug of the guide rail to a first lug mounted on the core shroud, positioning a discharging nozzle at a position at which compressive remaining stress is added to a surface of the core shroud by moving the discharging nozzle in a radial direction and an axial direction of the core shroud by a discharging nozzle moving apparatus mounted on a turnable revolving on the guide rail and discharging water to add compressive remaining stress to a surface of the core shroud from the discharging nozzle.
摘要翻译：对反应堆压力容器内部的结构构件进行维护的方法包括降低具有第二凸耳的环形导轨，直到导轨靠在设置在反应堆压力容器内部的芯护罩的上凸缘上，可拆卸地安装第二凸耳所述导轨连接到安装在所述芯护罩上的第一凸耳，通过沿所述芯的径向和轴向方向移动所述排出喷嘴，将排出喷嘴定位在所述芯护罩的表面处的压缩剩余应力的位置处通过安装在导轨上可转动的排放喷嘴移动装置进行护罩，并排出水以从排出喷嘴向芯护罩的表面增加压缩剩余应力。

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