A gas pipeline network leak detection and location method based on feature images

Abstract

The invention discloses a gas pipeline network leakage detection and positioning method based on a characteristic image, including: 1. Selecting each node of the gas pipeline network as a control point; 2. Using an off-line fluid simulation software Pipeline Studio to establish a gas pipeline network simulation model; 3. Set up m simulated leakage points (m≥2) at equidistant intervals on the pipe section between adjacent control points of the gas pipeline network simulation model; 4. Select n equidistant simulated leakage points according to the gas supply volume of the gas pipeline network ;5. Input the above-mentioned n simulated leakage amounts into m simulated leakage points respectively, carry out steady-state simulation for each working condition, and obtain the pressure data of the control points under each working condition; 6. Make the characteristic image of the gas pipeline network leakage condition ; 7. Extract image feature vectors as SVM detection samples; 8. SVM multiple classification recognition. The method can quickly and accurately detect and locate the location of the leakage source, and provide a basis for emergency treatment.

Description

technical field [0001] The invention relates to the technical field of gas pipeline network safety detection, in particular to a gas pipeline network leakage detection and positioning method based on a characteristic image. Background technique [0002] With the acceleration of my country's energy structure adjustment process, the construction of urban gas pipeline network is also developing rapidly. Due to the flammable and explosive characteristics of gas, the safety of pipelines as the main means of gas transportation is particularly important. In various safety production accidents, gas pipeline leakage undoubtedly poses a huge threat to people's life and property safety. While trying to avoid such accidents, we are also required to locate the leakage point as soon as possible and carry out relevant disposal. [0003] At present, most of the domestic and foreign researches on gas pipeline leakage detection and location are aimed at long-distance pipelines for gas and oi...

AI Technical Summary

Problems solved by technology

Coupled with the large urban population and property density, as well as problems such as brutal construction, private excavation and random construction that cause external damage to the gas pipeline, this makes the leakage safety hazards of the urban gas pipeline network more prominent.

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