| 摘要 |
PROBLEM TO BE SOLVED: To provide an imaging facility equipped with a mobile imaging device which is simple and compact in structure, and safe and easy in maintenance. SOLUTION: The imaging facility comprises a guide tube formed with a transparent tube or a tube with a transparent window, a pig pressure-fed in the guide tube by a fluid pressure, and the imaging device mounted on the pig. The imaging device can pick up an image of the outside of the guide tube through the wall of the transparent tube or the transparent window of the guide tube. Preferably, a guide tube cleaning cylinder having a cleaning means on its inner side for cleaning the outer surface of the guide tube is fitted to the outside of the guide tube in a such a way that the guide tube cleaning cylinder can move in the longitudinal direction of the tube. The guide tube cleaning cylinder is magnetically coupled to the pig by sandwiching the wall of the guide tube in-between so that the guide tube cleaning cylinder can move following the pig. COPYRIGHT: (C)2005,JPO&NCIPI
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