公开(公告)号：US20110148404A1

公开(公告)日：2011-06-23

申请号：US13028500

申请日：2011-02-16

申请人： Akira NISHIMIZU ,  Yoshio Nonaka ,  Isao Yoshida ,  Motoyuki Nakamura ,  Akihiro Taki ,  Masahiro Koike

发明人： Akira NISHIMIZU ,  Yoshio Nonaka ,  Isao Yoshida ,  Motoyuki Nakamura ,  Akihiro Taki ,  Masahiro Koike

IPC分类号： G01R33/12

CPC分类号： G01N27/9046

摘要： The surface length of a metal subject to be inspected is evaluated by detecting an eddy current without using a combination of a scale and visual or liquid penetrant inspection. An exciting coil and a detecting coil are scanned above the subject in a length direction. An eddy current detector measures an output voltage corresponding to scanning positions based on an output from the detecting coil. Based on an output voltage distribution curve indicating a distribution of output voltages corresponding to the scanning positions, position information is extracted corresponding to values which are within a differential voltage range and lower by 12 dB than a maximum value of the output voltages on the left and right sides of the distribution. A distance between the positions included in the extracted information is calculated to evaluate the length of a slit which is a defect present on the subject surface.

摘要翻译： 要检查的金属的表面长度通过检测涡流来评估，而不使用水垢和视觉或液体渗透剂检查的组合。 激光线圈和检测线圈在长度方向上扫描被检体的上方。 涡电流检测器基于来自检测线圈的输出来测量对应于扫描位置的输出电压。 基于表示与扫描位置对应的输出电压分布的输出电压分布曲线，对应于在差分电压范围内并且比左侧的输出电压的最大值低12dB的值提取位置信息， 右侧分配。 计算提取的信息中包含的位置之间的距离，以评估作为被摄体表面上存在的缺陷的狭缝的长度。

公开(公告)号：US07911206B2

公开(公告)日：2011-03-22

申请号：US11771436

申请日：2007-06-29

申请人： Akira Nishimizu ,  Yoshio Nonaka ,  Isao Yoshida ,  Motoyuki Nakamura ,  Akihiro Taki ,  Masahiro Koike

发明人： Akira Nishimizu ,  Yoshio Nonaka ,  Isao Yoshida ,  Motoyuki Nakamura ,  Akihiro Taki ,  Masahiro Koike

IPC分类号： G01N27/82 ,  G01N27/72

CPC分类号： G01N27/9046

摘要： The surface length of a metal subject to be inspected is evaluated by detecting an eddy current without using a combination of a scale and visual or liquid penetrant inspection. An exciting coil and a detecting coil are scanned above the subject in a length direction. An eddy current detector measures an output voltage corresponding to scanning positions based on an output from the detecting coil. Based on an output voltage distribution curve indicating a distribution of output voltages corresponding to the scanning positions, position information is extracted corresponding to values which are within a differential voltage range and lower by 12 dB than a maximum value of the output voltages on the left and right sides of the distribution. A distance between the positions included in the extracted information is calculated to evaluate the length of a slit which is a defect present on the subject surface.

摘要翻译： 要检查的金属的表面长度通过检测涡流来评估，而不使用水垢和视觉或液体渗透剂检查的组合。 激光线圈和检测线圈在长度方向上扫描被检体的上方。 涡电流检测器基于来自检测线圈的输出来测量对应于扫描位置的输出电压。 基于表示与扫描位置对应的输出电压分布的输出电压分布曲线，对应于在差分电压范围内并且比左侧的输出电压的最大值低12dB的值提取位置信息， 右侧分配。 计算提取的信息中包含的位置之间的距离，以评估作为被摄体表面上存在的缺陷的狭缝的长度。

公开(公告)号：US08339130B2

公开(公告)日：2012-12-25

申请号：US13028500

申请日：2011-02-16

申请人： Akira Nishimizu ,  Yoshio Nonaka ,  Isao Yoshida ,  Motoyuki Nakamura ,  Akihiro Taki ,  Masahiro Koike

发明人： Akira Nishimizu ,  Yoshio Nonaka ,  Isao Yoshida ,  Motoyuki Nakamura ,  Akihiro Taki ,  Masahiro Koike

IPC分类号： G01R33/02 ,  G01N27/82

CPC分类号： G01N27/9046

摘要： The surface length of a metal subject to be inspected is evaluated by detecting an eddy current without using a combination of a scale and visual or liquid penetrant inspection. An exciting coil and a detecting coil are scanned above the subject in a length direction. An eddy current detector measures an output voltage corresponding to scanning positions based on an output from the detecting coil. Based on an output voltage distribution curve indicating a distribution of output voltages corresponding to the scanning positions, position information is extracted corresponding to values which are within a differential voltage range and lower by 12 dB than a maximum value of the output voltages on the left and right sides of the distribution. A distance between the positions included in the extracted information is calculated to evaluate the length of a slit which is a defect present on the subject surface.

摘要翻译： 要检查的金属的表面长度通过检测涡流来评估，而不使用水垢和视觉或液体渗透剂检查的组合。 激光线圈和检测线圈在长度方向上扫描被检体的上方。 涡电流检测器基于来自检测线圈的输出来测量对应于扫描位置的输出电压。 基于表示与扫描位置对应的输出电压分布的输出电压分布曲线，对应于在差分电压范围内并且比左侧的输出电压的最大值低12dB的值提取位置信息， 右侧分配。 计算提取的信息中包含的位置之间的距离，以评估作为被摄体表面上存在的缺陷的狭缝的长度。

公开(公告)号：US20080004817A1

公开(公告)日：2008-01-03

申请号：US11771436

申请日：2007-06-29

申请人： Akira NISHIMIZU ,  Yoshio Nonaka ,  Isao Yoshida ,  Motoyuki Nakamura ,  Akihiro Taki ,  Masahiro Koike

发明人： Akira NISHIMIZU ,  Yoshio Nonaka ,  Isao Yoshida ,  Motoyuki Nakamura ,  Akihiro Taki ,  Masahiro Koike

IPC分类号： G06F19/00

CPC分类号： G01N27/9046

摘要： The surface length of a metal subject to be inspected is evaluated by detecting an eddy current without using a combination of a scale and visual or liquid penetrant inspection. An exciting coil and a detecting coil are scanned above the subject in a length direction. An eddy current detector measures an output voltage corresponding to scanning positions based on an output from the detecting coil. Based on an output voltage distribution curve indicating a distribution of output voltages corresponding to the scanning positions, position information is extracted corresponding to values which are within a differential voltage range and lower by 12 dB than a maximum value of the output voltages on the left and right sides of the distribution. A distance between the positions included in the extracted information is calculated to evaluate the length of a slit which is a defect present on the subject surface.

摘要翻译： 要检查的金属的表面长度通过检测涡流来评估，而不使用水垢和视觉或液体渗透剂检查的组合。 激光线圈和检测线圈在长度方向上扫描被检体的上方。 涡电流检测器基于来自检测线圈的输出来测量对应于扫描位置的输出电压。 基于表示与扫描位置对应的输出电压分布的输出电压分布曲线，对应于在差分电压范围内并且比左侧的输出电压的最大值低12dB的值提取位置信息， 右侧分配。 计算提取的信息中包含的位置之间的距离，以评估作为被摄体表面上存在的缺陷的狭缝的长度。

公开(公告)号：US08576974B2

公开(公告)日：2013-11-05

申请号：US12986579

申请日：2011-01-07

申请人： Motoyuki Nakamura ,  Yoshio Nonaka ,  Naoyuki Kono ,  Masahiro Miki ,  Satoshi Shinohara

发明人： Motoyuki Nakamura ,  Yoshio Nonaka ,  Naoyuki Kono ,  Masahiro Miki ,  Satoshi Shinohara

IPC分类号： G21C17/003 ,  G21C17/007

CPC分类号： G21C17/003 ,  G21Y2002/204 ,  G21Y2002/304 ,  G21Y2002/401 ,  G21Y2004/30 ,  G21Y2004/504

摘要： An object of the present invention is to provide an inspection apparatus for inspecting weld zones in a reactor pressure vessel, the inspection apparatus comprising: an ultrasonic probe 6 for emitting an ultrasonic wave; a probe holding unit 60 for holding the ultrasonic probe 6 such that a ultrasonic wave transmitting surface of the ultrasonic probe 6 is kept in direct contact with or at a constant distance from the outer surface of the reactor pressure vessel 1; a pressing unit 50 for pressing the probe holding unit 60 parallel to a central axis of a control rod drive housing 8 against the reactor pressure vessel; and a rotator 40 for rotating the probe holding unit 60 and the pressing unit 50 about the central axis of the control rod drive housing 8.

摘要翻译： 本发明的目的是提供一种用于检查反应堆压力容器中的焊接区域的检查装置，该检查装置包括：用于发射超声波的超声波探头6; 用于保持超声波探头6使得超声波探头6的超声波透过表面与反应堆压力容器1的外表面直接接触或恒定距离的探针保持单元60; 按压单元50，用于将探针保持单元60平行于控制棒驱动器壳体8的中心轴线压靠在反应堆压力容器上; 以及用于使探针保持单元60和按压单元50围绕控制杆驱动器壳体8的中心轴线旋转的旋转器40。

公开(公告)号：US20090122942A1

公开(公告)日：2009-05-14

申请号：US12190883

申请日：2008-08-13

申请人： Motoyuki Nakamura ,  Yoshio Nonaka ,  Naoyuki Kono ,  Masahiro Miki ,  Satoshi Shinohara

发明人： Motoyuki Nakamura ,  Yoshio Nonaka ,  Naoyuki Kono ,  Masahiro Miki ,  Satoshi Shinohara

IPC分类号： G21C17/00

CPC分类号： G21C17/003 ,  G21Y2002/204 ,  G21Y2002/304 ,  G21Y2002/401 ,  G21Y2004/30 ,  G21Y2004/504

摘要： An object of the present invention is to provide an inspection apparatus for inspecting weld zones in a reactor pressure vessel, the inspection apparatus comprising: an ultrasonic probe 6 for emitting an ultrasonic wave; a probe holding unit 60 for holding the ultrasonic probe 6 such that a ultrasonic wave transmitting surface of the ultrasonic probe 6 is kept in direct contact with or at a constant distance from the outer surface of the reactor pressure vessel 1; a pressing unit 50 for pressing the probe holding unit 60 parallel to a central axis of a control rod drive housing 8 against the reactor pressure vessel; and a rotator 40 for rotating the probe holding unit 60 and the pressing unit 50 about the central axis of the control rod drive housing 8.

摘要翻译： 本发明的目的是提供一种用于检查反应堆压力容器中的焊接区域的检查装置，该检查装置包括：用于发射超声波的超声波探头6; 用于保持超声波探头6使得超声波探头6的超声波透过表面与反应堆压力容器1的外表面直接接触或恒定距离的探针保持单元60; 按压单元50，用于将探针保持单元60平行于控制棒驱动器壳体8的中心轴线压靠在反应堆压力容器上; 以及用于使探针保持单元60和按压单元50围绕控制杆驱动器壳体8的中心轴线旋转的旋转器40。

公开(公告)号：US07693251B2

公开(公告)日：2010-04-06

申请号：US11834230

申请日：2007-08-06

申请人： Naoyuki Kono ,  Masahiro Miki ,  Yoshio Nonaka ,  Motoyuki Nakamura

发明人： Naoyuki Kono ,  Masahiro Miki ,  Yoshio Nonaka ,  Motoyuki Nakamura

IPC分类号： G21C17/10

CPC分类号： G01N29/11 ,  G01N29/0609 ,  G01N29/262 ,  G01N2291/02854 ,  G01N2291/02872 ,  G01N2291/044 ,  G01N2291/2675 ,  G21C17/003 ,  G21Y2002/204 ,  G21Y2002/304 ,  G21Y2002/401 ,  G21Y2004/30 ,  G21Y2004/40

摘要： The ultrasonic probe of the ultrasonic inspection apparatus, which is pushed onto the outer surface of the reactor pressure vessel, transmits and receives an ultrasonic wave to and from a penetration having a welded portion while changing an incident angle of the ultrasonic wave. Based on a result of reception of an echo obtained by the reflection of the ultrasonic wave on the inner surface of the penetration, an inclination angle of the penetration relative to a wall surface of the reactor pressure vessel is measured. A circumferential direction position of the penetration, which corresponds to the inclination angle, is calculated based on the relationship of an inclination angle and a circumferential direction position, which have been calculated in advance. Then, the circumferential direction position can be obtained as information on the inspection position.

摘要翻译： 超声波检查装置的超声波探头被推压到反应堆压力容器的外表面，并且在改变超声波的入射角的同时，向具有焊接部分的穿透物进行超声波接收超声波。 基于通过在穿透的内表面上反射超声波而获得的回波的接收结果，测量相对于反应堆压力容器的壁面的穿透倾角。 基于预先计算出的倾斜角度与圆周方向位置的关系来计算穿透的与倾斜角对应的圆周方向位置。 然后，作为关于检查位置的信息可以获得圆周方向位置。

公开(公告)号：US08619939B2

公开(公告)日：2013-12-31

申请号：US12986437

申请日：2011-01-07

申请人： Motoyuki Nakamura ,  Yoshio Nonaka ,  Naoyuki Kono ,  Masahiro Miki ,  Satoshi Shinohara

发明人： Motoyuki Nakamura ,  Yoshio Nonaka ,  Naoyuki Kono ,  Masahiro Miki ,  Satoshi Shinohara

IPC分类号： G21C17/00

CPC分类号： G21C17/003 ,  G21Y2002/204 ,  G21Y2002/304 ,  G21Y2002/401 ,  G21Y2004/30 ,  G21Y2004/504

摘要： An object of the present invention is to provide an inspection apparatus for inspecting weld zones in a reactor pressure vessel, the inspection apparatus comprising: an ultrasonic probe 6 for emitting an ultrasonic wave; a probe holding unit 60 for holding the ultrasonic probe 6 such that a ultrasonic wave transmitting surface of the ultrasonic probe 6 is kept in direct contact with or at a constant distance from the outer surface of the reactor pressure vessel 1; a pressing unit 50 for pressing the probe holding unit 60 parallel to a central axis of a control rod drive housing 8 against the reactor pressure vessel; and a rotator 40 for rotating the probe holding unit 60 and the pressing unit 50 about the central axis of the control rod drive housing 8.

公开(公告)号：US20110103536A1

公开(公告)日：2011-05-05

申请号：US12986437

申请日：2011-01-07

申请人： Motoyuki Nakamura ,  Yoshio Nonaka ,  Naoyuki Kono ,  Masahiro Miki ,  Satoshi Shinohara

发明人： Motoyuki Nakamura ,  Yoshio Nonaka ,  Naoyuki Kono ,  Masahiro Miki ,  Satoshi Shinohara

IPC分类号： G21C17/00

CPC分类号： G21C17/003 ,  G21Y2002/204 ,  G21Y2002/304 ,  G21Y2002/401 ,  G21Y2004/30 ,  G21Y2004/504

摘要： An object of the present invention is to provide an inspection apparatus for inspecting weld zones in a reactor pressure vessel, the inspection apparatus comprising: an ultrasonic probe 6 for emitting an ultrasonic wave; a probe holding unit 60 for holding the ultrasonic probe 6 such that a ultrasonic wave transmitting surface of the ultrasonic probe 6 is kept in direct contact with or at a constant distance from the outer surface of the reactor pressure vessel 1; a pressing unit 50 for pressing the probe holding unit 60 parallel to a central axis of a control rod drive housing 8 against the reactor pressure vessel; and a rotator 40 for rotating the probe holding unit 60 and the pressing unit 50 about the central axis of the control rod drive housing 8.

公开(公告)号：US07929656B2

公开(公告)日：2011-04-19

申请号：US12190883

申请日：2008-08-13

申请人： Motoyuki Nakamura ,  Yoshio Nonaka ,  Naoyuki Kono ,  Masahiro Miki ,  Satoshi Shinohara

发明人： Motoyuki Nakamura ,  Yoshio Nonaka ,  Naoyuki Kono ,  Masahiro Miki ,  Satoshi Shinohara

IPC分类号： G21C17/00

CPC分类号： G21C17/003 ,  G21Y2002/204 ,  G21Y2002/304 ,  G21Y2002/401 ,  G21Y2004/30 ,  G21Y2004/504

摘要： An object of the present invention is to provide an inspection apparatus for inspecting weld zones in a reactor pressure vessel, the inspection apparatus comprising: an ultrasonic probe 6 for emitting an ultrasonic wave; a probe holding unit 60 for holding the ultrasonic probe 6 such that a ultrasonic wave transmitting surface of the ultrasonic probe 6 is kept in direct contact with or at a constant distance from the outer surface of the reactor pressure vessel 1; a pressing unit 50 for pressing the probe holding unit 60 parallel to a central axis of a control rod drive housing 8 against the reactor pressure vessel; and a rotator 40 for rotating the probe holding unit 60 and the pressing unit 50 about the central axis of the control rod drive housing 8.

摘要翻译： 本发明的目的是提供一种用于检查反应堆压力容器中的焊接区域的检查装置，该检查装置包括：用于发射超声波的超声波探头6; 用于保持超声波探头6使得超声波探头6的超声波透过表面与反应堆压力容器1的外表面直接接触或恒定距离的探针保持单元60; 按压单元50，用于将探针保持单元60平行于控制棒驱动器壳体8的中心轴线压靠在反应堆压力容器上; 以及用于使探针保持单元60和按压单元50围绕控制杆驱动器壳体8的中心轴线旋转的旋转器40。