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2. 发明专利

JPH05340925A 失效
公开(公告)号：JPH05340925A
公开(公告)日：1993-12-24
申请号：JP14448992
申请日：1992-06-04
申请人： BABCOCK HITACHI KK , HITACHI LTD , JAPAN ATOMIC POWER
发明人： ITO MORIO , TOKUNAGA KATSUMI , AOKI TAKAYUKI , BANBA MITSUO , KUREBAYASHI MAKOTO , SASAKI TSUKASA
IPC分类号： G01N29/04 , G01N29/10
摘要： PURPOSE:To obtain a pressure vessel inspector which has solved the problem of a submergence structure and a ring garter, that of adjustment of position of RPV radius direction of a mast, and that of vibration of the inspector. CONSTITUTION:This inspector is provided with a ring garter 13 which is installed at the main flange part of a pressure container 1, a carriage 14 which travels along the ring garter 13, upper and lower masts 16 and 18 which are expanded and contracted in upper and lower directions of the pressure vessel 1 while they are supported by the carriage 14, an arm 19 which travels long the peripheral surface of the pressure container 1 while it is engaged to the lower mast 18, and a head 20 which travels along the peripheral surface of the pressure container 1 while it is supported by the arm 19.

3. 发明专利

JPH0540189A INSPECTION DEVICE FOR INSIDE OF REACTOR 失效
公开(公告)号：JPH0540189A
公开(公告)日：1993-02-19
申请号：JP19659591
申请日：1991-08-06
申请人： CHUGOKU ELECTRIC POWER , HITACHI LTD , HITACHI ENG CO LTD
发明人： SASAKI TSUKASA , TAKAKU KAZUO , UOZUMI HIROTO , ASANO KUNITAKA , KANDA KIMIO , MASAOKA ISAHIKO , MATSUSHIMA KAZUO , IWAMOTO KAZUTO
IPC分类号： G01N29/04 , G01N29/26 , G21C17/003
摘要： PURPOSE:To observe easily the intactness of welding part of a reactor pressure vessel from inside. CONSTITUTION:On the upper part of a reactor pressure vessel 1, an azimuthal dolly 11 is placed and on the azimuthal dolly 11 a radial dolly 13 is placed. On the radial dolly 13, a lower mast 14 and an upper mast 16 to support a part of the mast 15 is fixed as to be free of extension up and down direction. In this case, the part of the mast 15 is fixed with a shift to the reactor pressure vessel body 1 side against the mast 16 and the lower mast 14 is fixed as to shift to the reactor pressure vessel body 1 side against the mast 15. And at the lower end of the lower mast 14, an ultrasonic sensor 18 is fixed below the lower mast 14.

4. 发明专利

JPH08136517A METHOD AND APPARATUS FOR ULTRASONIC FLAW DETECTION 失效
公开(公告)号：JPH08136517A
公开(公告)日：1996-05-31
申请号：JP27907194
申请日：1994-11-14
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KAMEDA MASAKAZU , TATEYAMA MASARU , NOJIMA HISAO , KIKUCHI OSAMU , KOSHIRAE MITSUO , KUMASAKA KENJI , SEGAWA NOBUYUKI , SASAKI TSUKASA
IPC分类号： G01N29/44 , G01N29/22
摘要： PURPOSE: To enhance efficiency in the evaluation of data and the flaw detection work by recording the data obtained through ultrasonic flaw detection in parallel with the flaw detection work. CONSTITUTION: The ultrasonic flaw detection apparatus comprises a driver for holding an ultrasonic probe and scanning over a specimen, a controller for controlling the scanning of the driver, an ultrasonic flaw detector 20 for amplifying a receiving signal in ultrasonic flaw detection and outputting an ultrasonic video signal, and a data recorder 5 for capturing the video signal using the positional signal of the probe as a sync signal and recording the video signal automatically on an external memory medium. The excitation timing for the total refraction angle is time shared in the ultrasonic flaw detection and the receiving signal at each angle us converted 6 into a digital data in synchronism with that timing. The data is then stored alternately in two alternative buffer memories 9, 10 provided in the recorder 5. A data stored in one of two alternative butter memories 9, 10, into which the digital data associated with flaw detection is not written, is then transferred to an external memory medium 15a.

5. 发明专利

JPH07181171A ULTRASONIC FLAW-DETECTOR 失效
公开(公告)号：JPH07181171A
公开(公告)日：1995-07-21
申请号：JP32708393
申请日：1993-12-24
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SASAKI TSUKASA , KIMURA YUTAKA , KANDA KIMIO
IPC分类号： G01N29/26
摘要： PURPOSE:To provide a small, lightweight and easily-detachable ultrasonic flaw- detector for detecting a flaw in a straight pipe, an elbow welded part, etc., by a method wherein a probe movement part installed at a circumferential ring is provided with a first ultrasonic probe and a probe holding arm installed at the probe movement part is provided with a second ultrasonic probe. CONSTITUTION:A circumferential ring 24 is supported by rollers 25, 26 for circumferential ring support, and it is driven by pinions 27, 28 for circumferential ring drive. A probe movement part 31 is attached to an arm 6 installed at the ring 24. An air cylinder 32, a probe mounting part 33, an ultrasonic probe 7, a probe mounting part 34, an air cylinder 35, a probe support arm 36 and an ultrasonic probe 37 are attached to the movement part 31. The probes 7, 37 are held by the arm 36 in the length direction of a pipe with reference to one probe movement part 31. As a result, the arm 6 becomes short by the protruding-length portion of the arm 36, and a curved part such as an elbow or the like in the pipe does not constitute an obstacle. In addition, a load which is applied to the circumferential ring is reduced. and also a driving gear can be miniaturized.

6. 发明专利

JPH0763704A LIQUID PERMEATION FLAW INSPECTOR IN NUCLEAR REACTOR PRESSURE VESSEL 失效
公开(公告)号：JPH0763704A
公开(公告)日：1995-03-10
申请号：JP21548193
申请日：1993-08-31
申请人： HITACHI LTD
发明人： SUZUKI MASANORI , KAJIYAMA SHIGERU , SASAKI TSUKASA , HOSODA YUJI
IPC分类号： G01N21/91 , G21C17/003
摘要： PURPOSE:To provide a smaller inspector with excellent radiation resistance concerning a fluorescence permeation flaw inspection of a deposit weld part of a neutron flux monitoring housing at a lower part of a reactor pressure vessel. CONSTITUTION:A permeation flaw detector 5 is set right above a through hole 3b of a neutron flux monitoring housing within a reactor with a setting mechanism 6. The permeation flaw detector 5 has three types of drive mechanisms--a lift shaft drive mechanism 14, an encircling shaft drive mechanism 15 and a radial shaft drive mechanism 16--and a flaw liquidcoating mechanism 9 is arranged at the tips of the drive mechanisms. A camera mechanism 10 having a supermini CCD camera is held with a camera mounting mechanism 11 to be inserted into the reactor through the through hole 3b from a pedestal at an external lower part of a pressure vessel and mounted at the tip of the flaw liquid coating mechanism 9 by a remote control. Three types of drive mechanisms are operated and a plurality of surfaces to be inspected of a deposit weld part or the like undergoes a liquid permeation flaw detection to observe the results of the flaw detection with the camera mechanism 10.

7. 发明专利

JPH05312990A TRACK TYPE ULTRASONIC INSPECTION DEVICE 失效
公开(公告)号：JPH05312990A
公开(公告)日：1993-11-26
申请号：JP11875292
申请日：1992-05-12
申请人： HITACHI LTD
发明人： KAJIYAMA SHIGERU , SASAKI TSUKASA , TAKAKU KAZUO
IPC分类号： G01N29/26 , G21C17/003
摘要： PURPOSE:To improve running performance of the device, small-size, lighten the device and shorten the detaching time by fixing one side of wheel support of a scanning device and making the other side free of fixing and opening and by giving and releasing excess pressure to the wheel during attaching and detaching, respectively. CONSTITUTION:When a wheel 8 supported with a scanning device 10 by a fixed supporter 12 is positioned on the side of a track, a pinion 11 gears to a rack 5. Then the slider 28 combined with a wheel shaft 29 is lowered by rotating a handle 16 in advance so that the coupling of a groove 33 with a rotation axis 30 is not obstracted by the interference of the lower side of a wheel 9 and a track 4. Then, opened leg 13 is lowered around a support shaft 31, the distorted part 32 of the rotation axis 30 is inserted in the groove 33 by rotating a handle 15 for 90 degree and the opened leg 13 is fixed to the support 14. By rotating the handle 16, the wheel 9 is pushed to the lower side of the track 4 with excess pressure. As a result, the device 10 is stably moved. To remove the device 10 from the track 4 can be done in a short time by operating the handle 16, 15 and the like in roughly reverse order to attaching.

8. 发明专利

JPH0574021B2 失效
公开(公告)号：JPH0574021B2
公开(公告)日：1993-10-15
申请号：JP6319188
申请日：1988-03-18
申请人： HITACHI LTD
发明人： HAYASHI MAKOTO , OOTAKA MASAHIRO , SASAKI TSUKASA
IPC分类号： G01N27/20 , G21C17/00 , G21C17/003

9. 发明专利

JPH0481658A SELF-RUNNING INSPECTING APPARATUS 失效
公开(公告)号：JPH0481658A
公开(公告)日：1992-03-16
申请号：JP19490890
申请日：1990-07-25
申请人： HITACHI LTD
发明人： KAJIYAMA SHIGERU , KOIKE MASAHIRO , SATO CHIKARA , TAKAKU KAZUO , SASAKI TSUKASA
IPC分类号： G01N29/04 , G01N29/26
摘要： PURPOSE:To set a scan position of a supersonic probe and an azimuth of a supersonic beam constantly at a target position and angle by detecting a running reference line and a running posture and changing the position of a scan arm which drives the supersonic probe. CONSTITUTION:A reference line of a welded part 2 or the like is detected by a welded part detecting sensor built into a scanner 10, while right and left magnetic crawlers 45 are driven based on an instruction signal from a controller to steer the scanner 10. At the same time an inclination alpha of the scanner 10 from the welded part 2 is detected by a built-in gradient angle sensor to electronically control a driving shaft 36. In addition, a position displacement DELTAl of the scanner 10 from the welded part 2 is detected by the welded part detecting sensor and an arm 32 is set to an angle beta by an electronically driven shaft 37, so that a scan arm 12 moves in parallel to an arm 30 by a parallelogram link coupled to the arm 30 and is controlled at a predetermined position on the welded part 2 and also at an orthogonal angle. Therefore, a supersonic probe 13 can be set to a predetermined orbit by a motor 44 of the arm 12 without being influenced by a posture of the scanner 10.

10. 发明专利

JPH01237450A ULTRASONIC FLAW DETECTING APPARATUS 失效
公开(公告)号：JPH01237450A
公开(公告)日：1989-09-21
申请号：JP6319388
申请日：1988-03-18
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： TAKAKU KAZUO , KANDA KIMIO , TATEYAMA MASARU , KAKINUMA YUKIO , SASAKI TSUKASA , UOZUMI HIROTO
IPC分类号： G01N29/44 , G01N29/04 , G01N29/30
摘要： PURPOSE:To improve checking efficiency, by providing an ultrasonic flaw detecting device, a distance-amplitude correcting (DAC) device, an operating panel and a digital memory, and performing the preparation of correction and the like of a DAC curve readily. CONSTITUTION:An ultrasonic flaw detecting device 5 provided with a DAC device 6 can perform the preparation, reading, correction, storing, erasing and the like of a DAC curve at a high speed based on the commands from an operating panel. Checking personnel do not feel waiting times even in a severe environment such as in an atomic power plant, and checking efficiency can be improved. A digital memory 11 is provided for the individual beam of a plurality of ultrasonic beams. Therefore, the individual DAC curve can be stored independently. When the ultrasonic beam is transmitted, the DAC curve is outputted in synchronization with every beam. Therefore, the optimum DAC curve can be obtained for the three ultrasonic beams of 0 deg., 45 deg. and 60 deg.. The checking efficiency, the checking reliability and the like can be improved.

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