Inspecting instrument of piping

Abstract

Abstract PURPOSE:To perform in the actual time the measurement of the pipe thickness in peripheral direction and the flaw detection of the inclined angle in peripheral direction by performing the scanning in peripheral direction and axial direction of the piping with using a annual linear alley probe. CONSTITUTION:The linear alley probe 8 that the transducers consisting of numerous ultrasonic vibrators are annually arranged in peripheral direction is held by a truck 2b and the scanning in peripheral direction is performed by changing- over in order and electronically the motion of each vibration of the probe 8 thereof. The travelling in the direction of the pipe axis is performed by a self- advancing driving motor 9 or manually. The thickness of the pipe 1 is known by measuring the value (t) subcontracting the distance t1 between the transmitting pulse 5 thus obtd. and the surface echo 6 inside the pipe from the transmission pulse 5 and the distance t2 of the surface echo 7 outside the pipe, and according to the result thereof the corrosion condition can be measured and in case of any crack of the piping 1 being existed such crack can be found by the generation of an echo 7'.

Inventors

• 👤 Takeshi Sakota
• 👤 迫田　豪

Bibliographic Details