| 摘要 |
PURPOSE:To make it possible to easily examine the interior of an object to be examined, by inserting a flexible water feed pipe into the object to be examined along with an insert shaft having rigidity consisting of plural divided pieces and feeding out a detector and a cable by the water pressure in the water feed pipe. CONSTITUTION:A flexible water feed pipe 14 is drawn out from a winder 23 while an insert shaft 18 is attached to the outer periphery of said pipe 14. In this state, the water feed pipe 14 is inserted into a header 11 being an object to be examined along with the insert shaft 18 by an insert mechanism 20. The insert shaft 18 consists of plural divided pieces 18a, 18b having rigidity and successively assembled according to the insert thereof into the header 11 while the leading end of the water feed pipe 14 is bent at a position, where the nozzle 15 provided to the leading end of said water feed pipe 14 reaches a place corresponding to the opening of an objective high temp. part pipe 12, and the nozzle 15 is inlaid with the opening of the high temp. part pipe 12. Next, water is supplied under predetermined pressure by a pump 25 and an ultrasonic probe 16 and a cable 17 are extruded from the nozzle 15 by said water pressure and the wall thickness of the high temp. part pipe 12 is measured from the interior thereof. |
