Stress wave and optical fiber sensing compound pipeline safety pre-warning system

Abstract

The invention relates to a stress wave and optical fiber sensing compound pipeline safety pre-warning system. The outputs of an optical fiber sensor arranged outside a pipeline (28) embedded under the ground surface (21) and a fixing device (27) are connected with the input of a vibration signal acquisition and processing device (25) through a signal line (26); the output of the vibration signal acquisition and processing device (25) is connected and clamped with the input of an externally clamping optical cable vibration device (23) on a pipeline one-ditch optical fiber (22) through a signalline (24); measured vibration signals are sent to the vibration signal acquisition and processing device (25) by the optical fiber sensor through the signal line (26); the processed signals are output to the input of the externally clamping optical cable vibration device (23) through the signal line (24); the externally clamping optical cable vibration device (23) makes the vibration signals act on the optical fiber sensing pipeline safety pre-warning system; and the optical fiber sensing pipeline safety pre-warning system positions and provides warning information.

Description

technical field [0001] The invention is a stress wave and optical fiber sensing compound pipeline safety early warning system. It involves measuring stress, measuring mechanical vibration, measuring impact and the technical fields of piping systems. Background technique [0002] As the lifeline of the industrial economy, oil and gas pipelines occupy an important position in the national economy. In recent years, with the rapid development of long-distance pipelines in my country, pipeline safety accidents caused by third-party sabotage events such as illegal construction, oil drilling and oil theft, and natural disasters have occurred from time to time, seriously affecting the safe operation of pipelines. As early as the last century, many scientific and technological personnel at home and abroad have devoted themselves to the research and application of safe operation protection technology for oil and gas pipelines. At present, the methods adopted at home and abroad are m...

AI Technical Summary

Problems solved by technology

In fact, in order to ensure the safety of burying itself, the communication optical cable laid in the same ditch as the pipeline, on the one hand, uses the method of suspending the optical cable in the ointment in the form of the cable, which reduces the sensitivity of the optical fiber to external micro-vibrations. On the other hand, the communication During the burying process of the optical cable, the exterior of the optical cable is protected by metal armor and a sleeved silicon core tube to further isolate external vibration signals. Therefore, these systems that rely on optical cables for pipeline safety warning are currently only in the experimental stage and cannot be installed Industrial pipeline field application

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