Ultrasonic wall thickness on-line monitoring device for oil and gas pipelines

Abstract

The present invention is an ultrasonic wall thickness on-line monitoring device for oil and gas pipelines, comprising a probe structure for on-line monitoring the wall thickness of oil and gas pipelines, including an ultrasonic probe, which can be telescopically connected to the probe bracket along the radial direction of the pipeline; The guide structure includes a circumferential guide rail structure and an axial guide rail structure. The circumferential guide rail structure includes a first guide rail, and the probe holder can rotate along the circumferential direction of the first guide rail to change the circumferential position of the ultrasonic probe; the axial guide rail structure includes a second guide rail. The guide rail, the second guide rail is arranged axially along the pipeline, and the circumferential guide rail structure can move along the second guide rail to change the axial position of the ultrasonic probe; the control part is used for sending and receiving ultrasonic signals, receiving and processing the monitoring data of the ultrasonic probe, The probe structure and the guide structure are controlled, and the probe structure and the guide structure are electrically connected to the control part. The invention has multi-point, axial full pipe length and circumferential 360-degree monitoring capabilities, and can realize online monitoring of variable pipe diameter and wall thickness.

Description

technical field [0001] The invention relates to the technical field of ultrasonic monitoring in the petroleum and petrochemical industry, in particular to an ultrasonic wall thickness online monitoring device for oil and gas pipelines. Background technique [0002] The petroleum and petrochemical industry has a large number of oil and gas pipelines, widely distributed, various corrosion factors, and complex laying environment. With the increase of the service life, there are greater risks and hidden dangers. Especially in recent years, oil and gas pipelines have been affected by third-party damage and natural geological disasters, which have caused serious losses and potentially huge damage to the safe and stable operation of pipelines. Therefore, it is necessary to monitor the wall thickness reduction status of oil and gas pipelines in key areas. [0003] The existing ultrasonic thickness measurement system generally uses brackets and clamps to arrange multiple ultrasonic ...

AI Technical Summary

Problems solved by technology

[0004] Most of the existing disclosed ultrasonic thickness measurement equipment can only perform fixed-point thickness measurement, and the scanning range is limited to the fixed position of each ultrasonic probe, which cannot realize continuous and dead-angle-free pipe wall thickness scanning

For areas that cannot be scanned, manual on-site ultrasonic scanning is required to supplement, resulting in large time and labor costs

A few published ultrasonic thickness measuring equipment can realize the non-dead angle scanning in the circumferential direction of the pipeline, but cannot realize the long-distance continuous scanning in the axial direction of the pipeline

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