Pipeline on-line monitoring device and method

Abstract

The invention discloses a pipeline on-line monitoring device and method. The pipeline on-line monitoring device comprises a sensing optical cable, a measuring unit and a monitoring unit; and the sensing optical cable comprises double core optical fibers, and the second end of the first optical fiber is connected with the second end of the second optical fiber. An optical power signal is obtained through the measuring unit; the frequency spectrum of stimulated brillouin scattered light is determined according to the optical power signal of the stimulated brillouin scattered light; the frequencyshift of the stimulated brillouin scattered light is determined according to a peak value of the stimulated brillouin scattered light; and the monitoring unit achieves on-line monitoring of the service conditions of a pipeline according to the historical data analysis and characteristic signal extraction and intelligent identification, early warning in advance can be performed on pipeline third-party destruction, pipeline leakage, pipeline sedimentation deformation, geological disasters and the like, thus occurrence time, place, incident tendency and the like are foreknown in advance, accurate positioning is achieved, pipeline maintainers can conveniently perform maintenance and handling in time, and occurrence of tremendous accidents is avoided.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of pipeline leakage monitoring, in particular to an online pipeline monitoring device and monitoring method. Background technique [0002] Oil and gas pipeline transportation is the fifth largest transportation mode in my country. It has the advantages of safety, high efficiency and low consumption, and is of great significance to ensuring energy security and economic development. Oil and gas pipelines are long and buried underground, and the geological environment is complex. After long-term service, failure accidents may occur due to corrosion, terrain settlement, pipe and construction quality, mechanical construction, and man-made damage. Oil and gas pipelines operate at high pressure, and the transport medium is flammable, explosive and toxic. Once an accident occurs, it will easily cause major economic losses, casualties and environmental pollution. Therefore, online safety mon...

AI Technical Summary

Problems solved by technology

However, limited by the measurement principle, Mach-Zehnder and Sagnac interferometers can only locate a single vibration event, and cannot locate multiple vibration events along the pipeline

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