ULTRASONIC FLAW DETECTING APPARATUS FOR WELDED PART IN NARROW PART

摘要

PURPOSE: To perform highly accurate ultrasonic flaw inspection and to improve the operability when an apparatus is inserted into and removed from a narrow part by providing an inspecting device at the intended position of the narrow part accurately in the stable state. ;CONSTITUTION: A housing 20 is suspended down to the upper side of a structure under inspection in a narrow part. An expansion fixing means 21 is made to protrude to the outside through the side wall of the housing so as to push the facing wall surface and fixes the housing. A turning part 22 is supported with the lower part of the housing. A driving mechanism 23 is provided in the vicinity of the lower part of the turning part so as to reciprocate and move an ultrasonic probe 27 in the radial direction. These parts are provided. A TV camera is mounted on the housing. The expanding fixing means 21 is made to protrude. Under the state wherein the housing 20 is fixed, the scanning with the ultrasonic probe 27 is performed by the turning movement with the turning part 22 and the straight movement in the radial direction with the driving mechanism.;COPYRIGHT: (C)1993,JPO&Japio