METHOD TO AUTOMATE METHOD OF VISUAL MEASUREMENT CONTROL OF PIPE SURFACE AND DEVICE FOR ITS REALISATION Russian patent published in 2015 - IPC G01N21/88 

FIELD: measurement equipment.

SUBSTANCE: invention relates to the field of diagnostics of oil and gas pipelines and is designed for automation of the method of visual and measurement control of pipe surface, with the purpose to detect safe operating pressure and to make a decision about the necessary type of pipe wall surface repair. The method and the device realising the proposed method consist in the fact that all pipe surface is scanned by laser sensors, which make it possible with high accuracy to measure the pipe surface profile and its geometric parameters. As a result of scanning, a mathematical 3D model of pipe surface is generated, which is saved in PC memory and is used for the process of decoding of geometric parameters of surface defects, their location on the pipe and determination of geometric parameters of the pipe. On the basis of decoding results, a strength calculation is performed to assess impact of detected defects at pipe operability, to determine safe operating pressure and to make a decision about the necessary type of pipe wall surface repair.

EFFECT: increased validity of results in detection of pipe defects.

2 cl, 8 dwg, 1 tbl