Pipeline leakage monitoring system based on spiral winding type optical fiber and monitoring method

Abstract

The invention discloses a pipeline leakage monitoring system based on a spiral winding type optical fiber and a monitoring method. The pipeline leakage monitoring system comprises a temperature measurement main unit and a multi-mode optical fiber, wherein the multi-mode optical fiber is connected to the temperature measurement main unit after being spirally wound on a to-be-monitored pipeline at equal intervals; and the temperature measurement is carried out on the to-be-monitored pipeline through the monitoring of a distributed optical fiber temperature measurement system, when a pipeline temperature field is found to be abnormal, an abnormal point is a leakage point, and then the positioning is carried out through the leakage point of the multi-mode optical fiber to obtain the position of the leakage point. According to the pipeline leakage monitoring system based on the spiral winding type optical fiber and the monitoring method, the optical fiber temperature measurement spatial resolution is selected as the length of a circle around the pipeline, the precision and cost problems are comprehensively considered, the abnormal point of the optical fiber temperature measurement is positioned, thus the position of the leakage point can be rapidly obtained, and the pipeline maintenance treatment is facilitated; and the monitoring range is wide, the real-time monitoring of the middle and edge areas of the pipeline is realized, the spatial resolution can be indirectly improved, and the accurate positioning of the leakage point of the pipeline can be realized.

Description

technical field [0001] The invention belongs to the technical field of pipeline transportation, and relates to a pipeline leakage monitoring technology of a pipeline gallery, in particular to a pipeline leakage monitoring system and a monitoring method based on a spirally wound optical fiber. Background technique [0002] Pipe gallery pipeline refers to the centralized arrangement of municipal public pipelines such as electricity, communication, gas, water supply and drainage, and heat in the same underground tunnel space for comprehensive development and utilization, so as to save urban construction land, facilitate unified planning and management, and beautify the city. landscape. The unified planning of public pipelines for pipe gallery pipelines can effectively reduce the impact of frequent excavation of pipeline accidents on road surface quality and the environment, while shortening the construction period and improving space utilization. Its comprehensive technical and...

AI Technical Summary

Problems solved by technology

[0008] 1. For the pipes in the pipe gallery, the location of possible leakage points is random. Using point sensors to collect data requires a huge workload, and comprehensive monitoring cannot be achieved, and the monitoring coverage is low.

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