Method for installing optical fiber sensor for natural gas pipeline leakage optical fiber monitoring system

Abstract

The invention discloses a method for installing an optical fiber sensor for a natural gas pipeline leakage optical fiber monitoring system. The optical fiber sensor for detecting radial vibration of the pipeline consists of an elastic cylinder (3), a fiber optic interferometer (4) and a tail fiber disk fiber box (1); interference arms of the fiber optic interferometer are uniformly and orderly wound on the periphery of the elastic cylinder (3); an optical fiber and the elastic cylinder (3) are bonded together by using a bonding agent; the fiber optic interferometer left after winding and relevant devices of the fiber optic interferometer are orderly wound in the tail fiber disk fiber box (1); the tail fiber disk fiber box (1) is fixed on the top of the elastic cylinder (3) by using a bonding agent; and the inner depressed end of the elastic cylinder (3) is bonded on the outer surface of a natural gas pipeline by using a bonding agent, and subjected to corresponding pipeline anti-corrosion treatment, so that the entire sensor and an anti-corrosion layer on the surface of the pipeline are butted seamlessly. Due to the adoption of method, the sensitivity of an optical fiber sensing unit probe can be effectively controlled, and good insulating and shielding effects are achieved on signal interference except natural gas leakage.

Description

technical field [0001] The invention relates to an installation method of an optical fiber sensor of a natural gas pipeline leakage optical fiber monitoring system, and relates to the technical fields of optical fiber sensing technology, mechanical vibration measurement and pipeline systems. Background technique [0002] At present, the total length of pipelines built in the world has reached 2.5 million kilometers, which has surpassed the total mileage of railways and has become the main mode of energy transportation in the world. Oil transportation in developed countries and oil-producing regions in the Middle East has all realized pipelines. my country's pipelines have also developed rapidly in recent years, with a total length of more than 70,000 kilometers. A large energy pipeline network has initially formed across the east, west, north and south, covering the whole country, and connecting overseas. Pipeline transportation has become the deployment of strategic energy s...

AI Technical Summary

Problems solved by technology

However, the technical requirements for the installation of the optical fiber sensing unit are complex, and the design is difficult. The main thing is to ensure that the detection sensitivity of the optical fiber sensing unit is high enough and the noise isolation is good.

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