Pipeline leakage detecting and positioning experimental system and detection method thereof

Abstract

The invention relates to a experimental system for scientific research, in particular to a pipeline leakage detecting and positioning experimental system and a detection method thereof, and the system is used for realizing detection and positioning experiments on leakage of long-distance gas conveying pipelines and long-distance liquid conveying pipelines by virtue of different leakage detection methods. The pipeline leakage detecting and positioning experimental system comprises a conveying pipeline, a medium conveying device, a negative-pressure wave detection device and an acoustic emission detection device; the medium conveying device comprises a conveying pipeline, a medium container, a surge tank, a water pump, an oil pump, a water tank outlet flowmeter, a water tank inlet flowmeter, an oil tank outlet flowmeter, an oil tank inlet flowmeter, a nitrogen cylinder outlet valve, a water tank outlet valve and an oil tank outlet valve; a bent part of the conveying pipeline is of a U-shaped pipeline, and the rest part of the conveying pipeline is a straight pipeline section; the negative-pressure detection device comprises a pressure sensor, an electromagnetic flowmeter, a data acquisition card and a computer; the acoustic emission detection device comprises an acoustic emission sensor, a signal preamplifier, an acoustic emission detection instrument and a computer; the acoustic emission detection instrument is used for processing signals, and transmitting the signals to the computer of the acoustic emission detection instrument so as to analyze the signals.

Description

technical field [0001] The invention relates to a scientific research experiment system, in particular to a pipeline leakage detection and positioning experiment system and a detection method thereof, which are used to realize leakage detection and positioning experiments of long-distance gas and liquid pipelines with different leakage detection methods. Background technique [0002] At present, pipeline transportation is one of the five modern transportation methods. Compared with the other four transportation methods (road, waterway, railway, and air), it has many advantages such as high efficiency, safety, and easy management. Pipeline transportation is a continuous transportation method with high transportation efficiency; pipelines are generally buried underground and are not affected by external environmental conditions; pipeline transportation generally does not produce environmental pollution and noise pollution, and transportation costs are low. Pipeline transportat...

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Problems solved by technology

[0004] At present, pipeline leakage detection and positioning technology has formed a relatively mature theoretical system, but the pipeline leakage detection and positioning technology applied to actual pipelines in China lags behind the advanced theoretical system

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