Natural gas pipeline leakage positioning method and device

Abstract

The invention provides a natural gas pipeline leakage positioning method and device. The method includes the steps that data signals are acquired on two sampling points of a natural gas pipeline by means of a sensor, and the first data signal and the second data signal are acquired; by means of an ELMD algorithm, the first data signal and the second data signal are decomposed, and the effective PF component of the first data signal and the effective PF component of the second data signal are acquired; and by means of the effective PF components of the first data signal and the second data signal, a time delay value between the first data signal and the second data signal is determined, and a pipeline leakage position is determined according to the time delay. According to the natural gas pipeline leakage positioning method and device, data acquired by the sensor are subjected to decomposing treatment by means of the ensemble local mean decomposition algorithm, the effective PF components of the data signals are acquired, and therefore the positioning precision of pipeline leakage is greatly improved.

Description

technical field [0001] The invention relates to the technical field of pipeline leakage location, in particular to a natural gas pipeline leakage location method and device. Background technique [0002] Pipeline transportation is usually accompanied by the storage and use of energy, which involves the sustainable development of energy and corresponding safety protection measures. Reasonable resource utilization is conducive to resource regeneration and sustainable development; meticulous security measures are conducive to protecting resources from being stolen and wasted. However, with the development of oil and gas pipeline transportation, the number of pipelines is increasing, and the laying distance of pipelines is becoming longer and longer. With the increase of service period, environmental and man-made damage, wear and tear of operation, and equipment aging, Corrosion and other factors lead to pipeline leakage from time to time, which in turn leads to many major leak...

AI Technical Summary

Problems solved by technology

However, for multi-branch networks with complex topologies, such as heating and water supply networks, these methods cannot be directly used

At present, for the leakage location of this kind of pipeline network, the commonly used method is the regular manual inspection method, or the passive inspection method that the leakage accident is relatively serious, and obvious phenomena appear to attract attention.

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