Endoscopic pipe leakage and blockage ultrasonic detection device and method based on channel association

Abstract

The invention provides an endoscopic liquid conveying pipe leakage and blockage ultrasonic detection device and method based on channel association. The device comprises soft fish-shaped inner detectors, an external passive sound label and an external active receiver. The soft fish-shaped inner detectors flow in a liquid conveying pipe along with liquid, and the pipe where the soft fish-shaped inner detectors flow through is detected through ultrasounds; and meanwhile, the external passive sound label with identity information is detected, and accurate positions of pipe defects are analyzed in cooperation with mileage recording. The external active receiver receives entrant sound signals transmitted by the soft fish-shaped inner detectors in the liquid conveying pipe on the outer side of the pipe, the passing time of the soft fish-shaped inner detectors is recorded, and the passing time of the multiple soft fish-shaped inner detectors can be combined to analyze which section of line is in blockage. By means of the method, each soft fish-shaped inner detector is provided with a plurality of ultrasonic receiving probes for full-directional receiving, and the multiple soft fish-shaped inner detectors conduct repeated detection, and the detection accuracy is high. The appearance of the soft fish-shaped inner detectors is in a fish shape, the size is small, the soft fish-shaped inner detectors are suitable for pipes with different pipe diameters, and use of an existing detector is not influenced.

Description

technical field [0001] The invention relates to ultrasonic detection technology, in particular to a device and method for detecting leakage and blockage of liquid delivery pipelines by using ultrasonic waves. Background technique [0002] With the rapid development of the liquid transportation pipeline transportation industry, the increase of pipelines, the increase of pipe age, the manufacturing defects, construction defects and corrosion of the pipeline itself, and man-made damage, etc., pipeline accidents occur frequently, and leakage is the main fault in the operation of liquid transportation pipelines. . In recent years, leakage accidents caused by corrosion and perforation of liquid pipelines, such as oil pipelines, have occurred frequently, seriously disturbing normal production and causing huge economic losses. my country's oil pipeline construction is in full swing. Experts predict that in the next 10 years, my country will realize the transportation of gasoline, d...

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Problems solved by technology

[0017] In view of this, in view of the large size and complex design of the current in-pipeline detector, the precise positioning of defects depends on the accurate positioning of the external positioning device, and the entire detection system does not take into account the shortcomings of simultaneous detection of pipeline leakage and pipeline blockage, combined with the high-precision characteristics of ultrasonic testing , the present invention proposes an ultrasonic detection device and method based on road-associated endoscopic liquid delivery pipeline leakage and blockage

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