Regional corrosion state ultrasonic scanning imaging early warning method and device

By combining ultrasonic scanning imaging with ARIMA/ARIMAX models, the accuracy issues of corrosion rate calculation and trend prediction in pipeline corrosion detection have been resolved, enabling dynamic monitoring and reliable early warning of pipeline corrosion.

CN122329211APending Publication Date: 2026-07-03SHENYANG ZKWELL CORROSION CONTROL TECH
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Patent Information

Application Number
CN202610663839.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-14
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing technologies for pipeline corrosion detection are sensitive to noise in corrosion rate calculation, have simple data processing, cannot automatically identify abnormal data, and have inaccurate corrosion trend predictions. Furthermore, operating parameters are not included in the model, resulting in insufficient accuracy in corrosion rate prediction.

Method used

The ultrasonic scanning imaging method for regional corrosion is adopted. The wall thickness data is collected by a two-dimensional scanning mechanism, and sound velocity compensation and data correction are performed. The corrosion trend is predicted by combining the ARIMA or ARIMAX model, and the operating parameters are introduced to set up a self-closed-loop data quality control mechanism for graded early warning.

Benefits of technology

It improves the accuracy and robustness of corrosion rate calculation, significantly enhances the accuracy of corrosion trend prediction, and enables dynamic monitoring and reliable early warning of the corrosion process.

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Abstract

The invention discloses an ultrasonic scanning imaging early warning method and device for a regional corrosion state, relates to the technical field of industrial nondestructive testing, and aims to solve the problems of low calculation precision of a regional corrosion rate and insufficient prediction capability of a corrosion trend. Comprising the steps that a two-dimensional scanning mechanism is controlled to conduct scanning along a preset path, and original wall thickness data, position coordinates and temperature parameters in a monitoring area are collected; compensating the sound velocity according to the temperature parameter, and correcting the original wall thickness data into a compensated wall thickness value; associating the compensated wall thickness value with the position coordinate to generate a wall thickness distribution thermodynamic diagram of the measured area; calculating the corrosion rate of each measuring point and evaluating the data confidence of each measuring point based on the compensated wall thickness value of each measuring point subjected to multiple historical scanning; and predicting the variation trend of the minimum wall thickness of a future area and the time for reaching a safety threshold. High-precision calculation of the regional corrosion rate, intelligent prediction of the corrosion trend and graded early warning are achieved, and technical support is provided for active maintenance of pipeline corrosion.
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