Ultrasonic detection device for oil pipeline defect

Abstract

The invention relates to an ultrasonic detection device for an oil pipeline defect. The ultrasonic detection device comprises a pipeline clean section, a defect detection section, and a power supply section, wherein the pipeline clean section and the defect detection section as well as the defect detection section and the power supply section are separately connected through universal joints, thepipeline clean section mainly comprises two pairs of petal-shaped leather cups that are staggered and overlaid, and is supported by spaced leather cups, when the leather cups are driven by pressure difference, the detection device advances towards the oil transfer direction; the defect detection section comprises three columns of ultrasonic sensors uniformly distributed in a circumferential direction, a probe signal processing system and an inertial navigation system; and the power supply section comprises a data storage system and a battery, the data storage system stores an ultrasonic signal, an inertial navigation signal and a mileage signal, and the battery powers a probe, inertial navigation and a mileage wheel. The ultrasonic detection device for the oil pipeline defect adopts an array probe, and analyzes primary echo by using an ultrasonic reflection single-pulse distance detection method so as to detect defects, thereby comprehensively detecting inner wall defects of the pipeline and effectively reducing defect data processing amount.

Description

technical field [0001] The invention relates to the field of pipeline ultrasonic internal detection, in particular to an ultrasonic detection device for oil pipeline defects. Background technique [0002] Pipelines are an important means of transportation for oil and gas transportation, and they are the blood vessels that guarantee energy delivery. In recent years, the integrity and safety of pipelines have been widely valued. Most of my country's oil and gas pipelines were built in the 1970s and 1980s. Due to the long service time, most of the pipelines have potential safety hazards, and the newly laid pipelines also need to be inspected for safety and integrity. Therefore, it poses a challenge to pipeline defect detection technology. [0003] At present, the common pipeline defect detection technologies mainly include: ultrasonic detection technology, magnetic flux leakage detection technology, eddy current detection technology and composite detection technology, among w...

AI Technical Summary

Problems solved by technology

[0004] The data processing capability of the ultrasonic defect detection device is the key performance index of the entire defect detector. During the detection process by the pulse reflection method, if there are multiple inner wall reflection echoes, it will not be possible to accurately determine the wall thickness and defect boundary, and the wall thickness The amount of detection data is large and difficult to process

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