Oil pipeline leakage detection device based on initiative acoustic emission principle and method thereof

Abstract

The present invention provides an oil pipeline leak detector based on the active sound transmitting principle and method. The detector includes an electroacoustic transducer, a signal generator, an acoustic emission transducer, a preamplifier and a signal collector. The detecting method adopts active sound emitting technology, real-time detecting sound energy changes of signal generated by electroacoustic transducer mounted on one end of the pipeline utilizing the acoustic emission transducer, and judging whether exist oil-stolen pipe branch or normal leakage in the pipeline, thus the device has an accurate detecting result and high sensitivity, preventing human made or normal leakage.

Description

technical field [0001] The invention relates to an oil pipeline leakage detection device and method based on the principle of active acoustic emission, and belongs to the technical field of pipeline monitoring. Background technique [0002] At present, the pipeline transportation industry has become one of the five major transportation industries that keep pace with railways, highways, aviation, and water transportation. However, with the increase of pipelines and the increase of pipeline service time, the probability of pipeline leakage accidents is also increasing. As we all know, if the fluid transported in the pipeline is dangerous and polluting, such as oil and natural gas, a leakage accident will cause huge loss of life and property and environmental pollution. Especially in my country, a considerable part of the oil and gas pipeline network has entered the aging period, and has suffered unprecedented man-made damage in the past ten years, so the loss caused by the le...

AI Technical Summary

Problems solved by technology

However, some pipelines may have been damaged by oil thieves before installing leak detection devices, that is, oil thieves usually choose to connect a branch pipe from the oil pipeline in a hidden place to steal oil at a far place. The pipeline is normally open most of the time, so the flow and pressure in the oil pipeline will not fluctuate greatly, so even if a conventional leak detection device is installed on the pipeline, it cannot be detected

In addition, if the oil stealing molecules use the method of slowly draining the oil during the oil stealing process, or the branch pipe is very thin compared to the oil pipeline, the conventional leakage detection device cannot detect this type of leakage.

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