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1. 发明专利

JPH09304281A OIL DETECTOR 失效
公开(公告)号：JPH09304281A
公开(公告)日：1997-11-28
申请号：JP11467996
申请日：1996-05-09
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： KURODA HIDEHIKO , MUKAI SHIGEHIKO , AIKAWA TETSUO , YOKOYAMA KUNIHIKO , KOKUBO TAKASHI , KUROKI MASAHIKO
IPC分类号： G01M3/20 , G01M3/38 , G01N21/64
摘要： PROBLEM TO BE SOLVED: To automatically detect a leak of oil without setting special environment by exciting a leak of oil to emit light and selecting the fluorescence wavelength and light emitting time thereof to observe them. SOLUTION: The pulse laser beam 2 from a pulse laser apparatus 1 is introduced into a fiber cable 3 by a lens 4 and introduced into an irradiation head 7 through a cable 3. The emitted laser beam 2 from the head uniformly irradiates a monitor region 6 in a pulse like state. By this constitution, the leak of oil 8 generated from machinery 5 emits fluorescence which is, in turn, appropriately selected by a wavelength selection element 9 to be transmitted. A camera controller 11 opens the shutter function of an image sensor 10 immediately after the extinction of laser beam 2 according to the signal from a synchronizing signal wire 12 to open the same for a preliminarily prescribed time before closes the shutter. As a result, an image signal is applied to a calculator 13 through the controller to be processed to judge the leak of oil and an alarm 14 emits a warning. By this constitution, the leak of oil can be automatically detected.

2. 发明专利

JPH1091232A AUTOMATIC MONITORING DEVICE 失效
公开(公告)号：JPH1091232A
公开(公告)日：1998-04-10
申请号：JP24210096
申请日：1996-09-12
申请人： TOSHIBA CORP , TOKYO ELECTRIC POWER CO
发明人： KOKUBO TAKASHI , KUROKI MASAHIKO , KURASAWA HIDEAKI , AIKAWA TETSUO , YOKOYAMA KUNIHIKO
IPC分类号： H04N7/18 , G05B23/02 , G08B21/00
摘要： PROBLEM TO BE SOLVED: To detect the state of an object purpose without adding any correcting function of the image slippage by converting the photographed video signals into an image whose geometric features are measured and comparing this image with an image obtained in a normal mode to evaluate the image change. SOLUTION: When the check monitoring is requested to a specific object, a turning/ elevating mechanism 2 turns an image pickup device 1 to the object based on the three-dimensional coordinate. An image processing means 14 fetches the video signals and converts them into a digital image. This image undergoes the area division and is stored after the direction pixels are counted against the centroidal coordinate in each divided area. A comparison processing means 15 compares the converted image with a normal image that is previously stored in a storage 8. In this comparison process, an area where the centroidal coordinates of the same area get closest to each other in a designated range is selected, a luminance difference is calculated between the decided areas and this minimum luminance difference is defined as a feature difference between both areas. This calculation is carried out in all areas of the image, and the presence or absence of a state change is detected based on the sum total value of differences. Then the abnormality is detected via a display device 9.

3. 发明专利

JPH11264813A ULTRASONIC FLAW DETECTING DEVICE AND METHOD THEREFOR 失效
公开(公告)号：JPH11264813A
公开(公告)日：1999-09-28
申请号：JP8827398
申请日：1998-03-18
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： KUROKI MASAHIKO , IYOGI TAKESHI , FUJII AKIRA , MORIMOTO SHIGEO , ISHII BUNJI , HARADA SHIGERU
IPC分类号： G01N29/04 , G01N29/26 , G01N29/10
摘要： PROBLEM TO BE SOLVED: To make improbable the efficiency in scanning, make maintainable satisfactory detection sensitivity, and make establishable optimal arrangement conditions in a short time. SOLUTION: The first probe supporting device 12a and the second probe supporting device 12b support two ultrasonic probes 11a and 11b brought into contact with and placed at both sides of a rotor wheel 2. The first and second probe supporting devices 12a and 12b are arranged interposing the rotor wheel 2 between them and accurately opposed to each other. In addition, the first and second probe supporting devices 12a and 12b are linked with each other by a link mechanism 13 at locations above blades 3 for interlocking the motions of the ultrasonic probes 11a and 11b during scanning by the ultrasonic probes 11a and 11b.

4. 发明专利

JP2000329749A ULTRASONIC FLAW DETECTOR AND ULTRASONIC FLAW DETECTING METHOD 失效
公开(公告)号：JP2000329749A
公开(公告)日：2000-11-30
申请号：JP13691399
申请日：1999-05-18
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： KUROKI MASAHIKO , IIDA HIDEO , MORIMOTO SHIGEO , HARADA SHIGERU , ISHII BUNJI
IPC分类号： G01N29/04 , G01N29/28
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic flaw detector markedly enhanced in the efficiency in scanning inclusive of attendant work and capable of well holding detection accuracy. SOLUTION: An ultrasonic flaw detector is equipped with first and second probe holders 11a, 11b arranged to both side surfaces of a rotor wheel 2 in opposed relationship. The first probe holder 11a has two ultrasonic probes 12a, 12b coming into contact with one surface of the rotor wheel 2 to detect a flaw and further has brushes 3 coated with a contact medium and a spatula 14 removing the contact medium in combination with two ultrasonic probes 12a, 12b. The brushes 13 and the spatula 14 are arranged on the same circumference of a circle as two ultrasonic probes 12a, 12b and, during scanning, the contact medium is applied to the brushes 13 at first and wipen off later by the spatula 14.

5. 发明专利

JPH10311771A OIL DETECTING APPARATUS 失效
公开(公告)号：JPH10311771A
公开(公告)日：1998-11-24
申请号：JP12098897
申请日：1997-05-12
申请人： TOSHIBA CORP , TOKYO ELECTRIC POWER CO
发明人： KURODA HIDEHIKO , MUKAI SHIGEHIKO , AIKAWA TETSUO , YOKOYAMA KUNIHIKO , KOKUBO TAKASHI , KUROKI MASAHIKO , KURASAWA HIDEAKI
IPC分类号： G01N21/64 , G01M3/38
摘要： PROBLEM TO BE SOLVED: To lower an erroneous oil detection due to a disturbance and due to the degradation of the apparatus and to specify the existence of a leak and a film thickness with high sensitivity by a method wherein pulsed light containing the absorption wavelength of an oil to be detected is irradiated, the oil is excited so as to emit light and the fluorescent wavelength and the light-emitting time of the oil are selected so as to be observed and detected. SOLUTION: Pulsed light 12 from a pulse light source 11 is narrowed down by a lens 14, it is introduced into an optical fiber 13, and it is guided to an irradiation head 15. In the head 15, an irradiation-wavelength selection device 16 selects an irradiation wavelength containing the absorption wavelength of a leaked oil 39, and the leaked oil 39 is irradiated. The leaked oil 39 absorbs the pulsed light 12, it emits fluorescence, and the florescence the leaked oil 39 is observed by a photomultiplier 23 at an observation device 20 in which an observation filter 21 is set at a prescribed observation wavelength. Then, a detection signal is sent to a processor 30. In this case, after irradiation with the pulsed liquid 12 based on a timing control device 31, only a signal at a time in which the leaked oil 39 emits fluorescence is extracted. By a leaked-oil detection signal, a film-thickness computing device 34 finds a film thickness. As a result, the fluorescence of the leaked oil 39 can be detected with high accuracy.

6. 发明专利

JPH10253487A CONCENTRATION DISTRIBUTION MEASURING DEVICE 失效
公开(公告)号：JPH10253487A
公开(公告)日：1998-09-25
申请号：JP5526797
申请日：1997-03-10
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： KOKUBO TAKASHI , KUROKI MASAHIKO , KURASAWA HIDEAKI , OCHIAI MAKOTO , MUKAI SHIGEHIKO , AIKAWA TETSUO , YOKOYAMA KUNIHIKO
IPC分类号： G01N29/00 , G01M3/38 , G01N21/00
摘要： PROBLEM TO BE SOLVED: To make the generation position of a pressure wave accurately identifiable by detecting the pressure wave generated by the photo-acoustic effect between the oscillation light of a light source and measurement object molecules, converting it into a concentration signal or an alarm signal, and obtaining the time difference between luminescence and the detection of the pressure wave. SOLUTION: A pulse laser beam 13 with the light absorbing wavelength of measurement object molecules 11 in a medium M is oscillated by a pulse laser light source 12a, a pressure wave PW is generated by the photo-acoustic effect with the measurement object molecules 11, and it is detected by a microphone 14a. A signal processing means 15 converts the detection signal into the concentration signal out1 of the measurement object molecules 11 and also converts it into the leakage signal out2 of molecules such as an alarm signal to operate an alarm unit. A time difference measuring means 16 detects the time difference between the oscillation time of the pulse laser light source 12a and the detection time of the microphone 14a, and a position identifying means 17 identifies the distance to the measurement object molecules 11. A concentration distribution display means 18 forms and displays the concentration distribution diagram of the measurement object molecules 11 from the position signal an the concentration signal out1.

7. 发明专利

JP2005308544A Crack development monitoring device and method by potential difference method 审中-公开
标题翻译：裂缝开发监测装置和方法通过潜在差异方法
公开(公告)号：JP2005308544A
公开(公告)日：2005-11-04
申请号：JP2004125779
申请日：2004-04-21
申请人： Tokyo Electric Power Co Inc:The , 東京電力株式会社
发明人： HAMADA HARUICHI , IIDA HIDEO , HAYAKAWA MANABU , KUROKI MASAHIKO
IPC分类号： G01M99/00 , G01N27/20 , G01M19/00
摘要： PROBLEM TO BE SOLVED: To estimate a crack having the size of several mm with sufficiently high accuracy by a potential difference method for estimating the pipe crack.
SOLUTION: A pipe crack detection device has a direct-current supply electrode installed on the pipe surface, a plurality of measuring electrodes, a potential difference measuring device connected to the plurality of measuring electrodes, a storage device for storing a plurality of potential difference data prepared beforehand, and a comparison device for comparing potential difference data measured by the potential difference measuring device with the potential difference data prepared beforehand. The device has a system wherein a direct-current pulse current is supplied from the direct-current supply electrode, and data measured by the measuring electrode is compared with the data prepared beforehand by the comparison device, to thereby specify the crack.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过用于估计管道裂纹的电位差法，以足够高的精度来估计尺寸为几mm的裂纹。解决方案：管道裂纹检测装置具有安装在管表面上的直流供应电极，多个测量电极，连接到多个测量电极的电位差测量装置，用于存储多个测量电极的存储装置预先准备的电位差数据，以及用于将由电位差测量装置测得的电位差数据与预先准备的电位差数据进行比较的比较装置。该装置具有从直流供给电极供给直流脉冲电流的系统，将由测量电极测量的数据与比较装置预先准备的数据进行比较，从而指定裂纹。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2002341047A OBJECT DISCRIMINATION DEVICE AND METHOD 失效
公开(公告)号：JP2002341047A
公开(公告)日：2002-11-27
申请号：JP2001144272
申请日：2001-05-15
申请人： TOKYO ELECTRIC POWER CO
发明人： HAYAKAWA MANABU , KUROKI MASAHIKO
IPC分类号： G01V1/00 , G01N29/00
摘要： PROBLEM TO BE SOLVED: To provide an object discrimination device and method for simultaneously discriminating whether an object is present or not and whether the object is metal or not. SOLUTION: An ultrasonic wave is transmitted from one probe 1a of a pair of probes arranged face to face in air, and the transmitted pulse and field effect pulse is received by the other probe 1b. Since the receiving state of the transmitted pulse and field effect pulse is changed depending on whether the object is present or not between the pair of the probes 1a, 1b and whether the object is metal or nonmetal, an ultrasonic flow detector 2 displays the received transmitted pulse and field effect pulse on a screen display device 3, and an evaluation device 4 discriminates whether the object is present or not and whether the object is metal or not on the basis of the state of the transmitted pulse and field effect pulse displayed on the screen display device 3 of the flaw detector 2.

9. 发明专利

JP2002090348A ULTRASONIC PROBE AND ULTRASONIC INSPECTION METHOD 失效
公开(公告)号：JP2002090348A
公开(公告)日：2002-03-27
申请号：JP2000286558
申请日：2000-09-21
申请人： TOKYO ELECTRIC POWER CO
发明人： KUROKI MASAHIKO , HAYAKAWA MANABU , IIDA HIDEO
IPC分类号： G01N29/04 , G01N29/10
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic probe and an ultrasonic inspection method capable of efficiently transmitting/receiving ultrasonic waves to/from an inspection objective part in a body to be inspected having a surface with a special curvature. SOLUTION: The surface of a wedge part 2 in a probe main body 1 having the wedge part 2 mounted at the tip is arranged in contact with the surface of the body to be inspected. The curvature of the wedge part 2 surface and that of the tested body surface are equal to each other, so that they are brought into mutual contact without any gap. An ultrasonic wave is transmitted from the probe main body 1. In this way, the ultrasonic wave can be properly transmitted to the inspection objective part in the body to be inspected having the surface with a special curvature via the wedge part 2, and a defective part can be examined with high precision.

10. 发明专利

JP2002040005A PROBE FOR LOCAL SOAKING 失效
公开(公告)号：JP2002040005A
公开(公告)日：2002-02-06
申请号：JP2000228181
申请日：2000-07-28
申请人： TOKYO ELECTRIC POWER CO
发明人： HAYAKAWA MANABU , KUROKI MASAHIKO
IPC分类号： G01N29/24 , H04R1/02
摘要： PROBLEM TO BE SOLVED: To provide a probe for local soaking capable of allowing an ultrasonic wave to enter an inspection object excellently even if the surface shape of the inspection object is a curved surface, and adjusting a focal distance easily. SOLUTION: An opening part on one side of a cylindrically formed holder 12 is blocked by a film 13, and a lid 14 is installed on an opening part on the other side, and a liquid is filled inside, and a focusing type ultrasonic probe 11 is sealed therein. The focusing type ultrasonic probe 11 allows the ultrasonic wave to enter the inspection object through the film 13. At that time, the focusing type ultrasonic probe 11 is moved in the axial direction of the holder 12 by a probe moving part, to adjust the focal distance. Therefore, bubble contamination from outside the holder 12 can be prevented, and since the liquid is always filled in the holder 12, excellent flaw detection is enabled with optional attitude.

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