METHOD OF DETERMINING LENGTH OF CONNECTING PIPE EXTENDING INTO T-JOINT PIPE USING ECHO SIGNAL Russian patent published in 2015 - IPC G01N29/04 

FIELD: physics.

SUBSTANCE: method includes generating, in the wall of the connecting pipe, perturbation action using an ultrasonic radiator mounted on the outer surface of the connecting pipe, and measuring the input signal parameter value by measuring the amplitude and determining, on the A-scan line, the location of the reflected ultrasonic pulse from the liquid crystal screen of an ultrasonic flaw detector. The method further includes determining the length of the path of the reflected echo signal from the end of the connecting pipe to the point of installation of the radiator by moving the ultrasonic radiator along the connecting pipe on the outer wall to obtain a maximum echo signal, followed by calculating the length of the extending part of the connecting pipe using a certain formula.

EFFECT: high accuracy and simple method of determining the length of the connecting pipe of T-joint steel pipes.

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