METHOD AND SUPPORT OF SENSORS FOR MEASURING ANGULAR DEFORMATION OF SEAMS IN PIPES USING ULTRASONIC DEFECTOSCOPY

摘要

1. The method of measuring the angular deformation of the joints in the pipe (1), and more precisely in the pipeline, by ultrasonic measurement using ultrasonic probes (8) mounted on the arms of the sensors (4), mounted on a special support (6), which moves in the direction of flow (7) transported through said pipe (1), characterized in that the sensor support (6) is used, on which the sensor brackets (4) are mounted on movable support frames (5) radially spring-loaded outward by means of spring elements (10) for providing their tight fit to the inner surface of the specified pipe (1), while the indicated support of the sensors (6) is able to decrease in size, and these sensors (8) are located at a fixed distance of removal (v) from the specified inner surface of the specified pipe (1), with the exception of the seam apex region (3), support frames (5) are used having a large width (kb) that exceeds the seam apex width (ab) measured in the circumferential direction of the pipe (1) in the region of the measured seam apex (3), and wherein said sensor brackets (4) in each case Ae are equipped with sensors (8) only in the measurement zone, which is located in the middle between two contact surfaces of the supporting frames, where the width of the measured area (mb) is less than or equal to half the width of the supporting frame (kb), while the deviation of the removal distance (dh2) of the sensors (8 ) obtained in the region of the seam apex (3) remains below a predetermined limit value, and the indicated sensor support (6) contains at least three consecutive rings (9), which are located one after another relative to the direction of movement (7) of the indicated sensor support (6) and contains