| 摘要 |
PURPOSE:To inspect pipings of intricate shapes surely without laborious attaching and detaching by making a moving body which is mounted on the outside circumference of the piping freely movable in the axial direction of the piping and moving an ultrasonic probe in follow-up thereto surely along the outside surface of the piping. CONSTITUTION:A roll 3 is turned by a driving mechanism 4 which is controlled in attitude by a position detector 5, by which an axial moving body 2 is moved in the axial direction of a piping 1 of nuclear power plant or the like on the outside circumference of the piping 1. On the other hand, the rotating body 6 in the circumferential direction of the body 2 is turned and moved along the outside circumference of the piping 1 by a circumerential turning mechanism 10, a roll 7, etc. and an ultrasonic probe 19 which is provided to the body 6 and is pressed thereto by a pressing mechanism 16 follows up the same surely along the outside circumference of the piping 1, whereby the piping is inspected of flaws ultrasonically. With such constitution, the piping of intricate shapes is inspected of defects surely with high accuracy. |
