Method and system for detecting and displaying structural damage to pipelines

Abstract

The invention relates to a method and system for detecting and displaying the damage of pipeline structure. The system includes a pipeline to be tested (10), a distributed sensor network (1) embedded on the outer surface of the pipeline to be tested (10), a signal processing device (2) and a display device (3). In the method and system for detecting and displaying pipeline structure damage of the present invention, the Lamb wave detection signal is excited and received through the distributed sensor network (1), and then the distributed sensor network (1) is transmitted through the signal processing device (2). ) to collect the Lamb wave detection signals collected, extract signal features and perform data fusion processing, and finally image and display the structural damage of the pipeline to be tested (10) on the display device (3). The invention can effectively avoid the existence of detection blind areas of the pipeline to be tested (10), and improve the detection accuracy of the structurally damaged surface of the pipeline to be tested (10).

Description

technical field [0001] The invention relates to a pipeline structure damage detection method, more specifically, to a method and system for detecting and displaying pipeline structure damage. Background technique [0002] The various transmission pipelines buried in the ground are prone to damage, erosion, delamination and other situations under the harsh use environment, which has a significant impact on people's production and life. Due to the complexity of the pipeline structure, in order to realize the effective detection of the damaged surface of the pipeline structure, the detection instrument needs to maintain effective contact with the area to be tested of the pipeline. Therefore, the commonly used non-destructive testing technology is not suitable for the location of the damaged surface and the detection of the damage degree of the complex tubular structure online. In the prior art, the structural damage detection system based on the guided wave method is widely us...

AI Technical Summary

Problems solved by technology

[0003] However, the general defect of this structural damage detection system is that since the sensor group is distributed in a ring shape on the outer surface of the pipeline to be tested, its detectable sensing range is relatively small

Obviously, the existing structural damage detection systems are only suitable for short-distance pipeline structural damage detection due to the limited movable distance of the ring sensor group

In addition, when using this structural damage detection system for pipeline structural damage detection, there will be a large number of detection blind spots in the detection area of ​​the pipeline to be tested, which greatly reduces the detection accuracy and low monitoring efficiency, and cannot meet the structural damage detection of long-distance pipelines in today's society. high precision requirements

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