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1. 发明专利

JPH11118735A METHOD AND APPARATUS FOR EVALUATING THINNING STATE OF PIPING, ETC. 失效
公开(公告)号：JPH11118735A
公开(公告)日：1999-04-30
申请号：JP28003797
申请日：1997-10-14
申请人： HITACHI ENG SERVICE
发明人： HASHIMOTO NOBUHIKO , YOKOYAMA HIROSHI
IPC分类号： G01N23/04 , F16L55/00
摘要： PROBLEM TO BE SOLVED: To quantitatively grasp a thinning state of pipings, etc., in a nondestructive manner without disassembling the pipings, etc., by analyzing images with the use of X-ray trnasmission information of shading values of every unit pixel of the pipings, etc., obtained by projecting X rays to the pipings, etc. SOLUTION: An X-ray generator 1 and an X-ray detector 3 are arranged to face each other via a piping 2 coated with a thermal insulation material 10. X rays 1a are projected to the piping 2 from the X-ray generator 1 and X-ray transmission information is obtained at the X-ray detector 3. Then, an information converter 5 converts the obtained X-ray trnasmission information to converted information analyzable by an analyzing apparatus 6. The analyzing apparatus 6 carries out image analysis with the use of the obtained X-ray transmission information of shading values for every unit pixel of the piping 2, thereby evaluating a thin state of the piping 2. If necessary, analysis information representing the evaluated thin state is recorded to a recording apparatus 7 and displayed by a display apparatus 8. Accordingly, the piping can be diagnosed with the thermal insulation material 10 or the like coat kept as it is, and a maintenance timing for the piping 2 can be managed surely.

2. 发明专利

JPH1164247A METHOD FOR ADJUSTING X-RAY CENTER AXIS OF X-RAY GENERATOR 失效
公开(公告)号：JPH1164247A
公开(公告)日：1999-03-05
申请号：JP22627697
申请日：1997-08-22
申请人： HITACHI ENG SERVICE
发明人： YONEDA YOSHIYUKI , YOKOYAMA HIROSHI
IPC分类号： G01N23/04 , G21K1/00 , G21K5/02
摘要： PROBLEM TO BE SOLVED: To perform the adjustments of the center axes of a portable X-ray generator and an X-ray detector simply and accurately by moving the detector in the direction to the center with reference to the location of the center estimated by a diaphragm X-ray image. SOLUTION: X-rays 15 from an X-ray generator 2 are reduced by an X-ray diaphragm device 14 and are brought to radiate toward an object to be inspected 1. The X-ray diaphragm device 14 is shaped e.g. like a star, irradiating X-rays 15 is shaped like a star, and it is possible to determine the center of the shape of the star immediately. Then from a star-shaped X-ray fluoroscopic image 16 obtained by an X-ray detector 3 and an image processing device 4, the direction to the center is estimated. Next, on the basis of this estimation, the X-ray detector 3 is moved in the direction of the estimated center. In addition, the X-ray generator 2 may be moved and adjusted simultaneously with the X ray detector 3. In this way, as the center axes are adjusted by estimating the center of the diaphragm X-ray radioscopic image, it is possible to perform adjustments simply and accurately, and particularly it is possible to perform adjustments at a large scale plant site.

3. 发明专利

JPH112609A CONTAINER INTERIOR INSPECTING DEVICE 失效
公开(公告)号：JPH112609A
公开(公告)日：1999-01-06
申请号：JP15544997
申请日：1997-06-12
申请人： HITACHI ENG SERVICE
发明人： TAYAMA OSAMU , YASU HIDEYUKI , YOKOYAMA HIROSHI , SHIRAISHI YASUKAZU
IPC分类号： G01M99/00 , G01N21/88 , G01N21/93 , G01N21/954 , G02B6/00 , G01M19/00
摘要： PROBLEM TO BE SOLVED: To provide a container interior inspecting device in which accuracy in inspection is improved by enabling the display in high quality of the situations of occurrence of chips, etc., in a container, which occur at the sliding parts of a gas-blast circuit-breaker at the time when it opens and closes. SOLUTION: A CCD camera 20 is arranged in a hermetically sealed space formed of a camera cover 21, a window plate 22, a cover mounting part 25, and an O-ring 26. The CCD camera 20 is equipped with a light source for illumination for illuminating a subject, and the window plate 22 is tilted with respect to the optical axis of photography to prevent the illumination light of the light source from being reflected at the surface of the window plate 22 and entering the imagepickup surface of the CCD camera 20. A container interior inspecting device 38 including the above-mentioned constitution is inserted into a container 1 and photographs the situations of occurrence of chips, etc., from sliding parts and chips, etc., in shields. These photographed images are used for inspection in containers.

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