INTRA TUBE METHOD OF ULTRASONIC TESTING OF WELDS Russian patent published in 2017 - IPC G01N29/04 

FIELD: physics.

SUBSTANCE: for hundred percent control of the entire cross section of the pipe to establish in a large number of ultrasonic transducers. Ultrasonic transducers are shifted relative to each other along the axis of the flaw detector. Shift can be up to 700 mm. In order to be able to analyse information, registered in one section of pipe all information should store in the buffer memory, registered by all ultrasonic flaw detector when moving the converters at a distance not less than double the distance between the first movement progresses ultrasonic and last. The declared method is invited to write to the onboard drive information, registered at the specified distance until the appearance of a sign identifying the longitudinal weld and after its termination. The size of the recording area must be at least 150 mm.

EFFECT: increasing the reliability of detection of welded joints in the process of in-tube ultrasonic testing.

6 cl, 4 dwg