Gas leakage monitoring system on basis of distributed optical fiber sensing technologies

Abstract

The invention discloses a gas leakage monitoring system on the basis of distributed optical fiber sensing technologies. The gas leakage monitoring system comprises a data server and a plurality of lower detection systems. The lower detection systems comprise sensing optical fibers, detection units and processing units, the sensing optical fibers are fixed onto gas pipelines, the detection units are connected with the sensing optical fibers, and the processing units are communicated and connected with the detection units and are communicated and connected with the data server; the detection units comprise transmission modules, receiving modules, timing modules, phase difference acquisition modules and photoelectric signal conversion modules, the transmission modules are used for transmitting light pulses to the sensing optical fibers, back scattering in the sensing optical fibers can be received by the receiving modules, the timing modules are connected with the transmission modules andthe receiving modules, the phase difference acquisition modules are connected with the transmission modules and the receiving modules, the photoelectric signal conversion modules are connected with the phase difference acquisition modules, and the photoelectric signal conversion modules and the timing modules are communicated and connected with the processing units. The gas leakage monitoring system has the advantages that integral vibration states of pipelines can be monitored by the gas leakage monitoring system, leakage conditions of the pipelines can be analyzed by the gas leakage monitoring system, and an alarm can be given by the gas leakage monitoring system.

Description

technical field [0001] The invention belongs to the field of pipeline leakage monitoring, in particular to a gas leakage monitoring system based on distributed optical fiber sensing technology. Background technique [0002] Gas pipeline leakage will not only cause huge economic losses to the gas company, induce fires and pollute the environment, but also affect the use of gas users, and even endanger the personal safety of residents around the pipeline. Existing pipeline leakage detection methods include: segmental pressure method, magnetic flaw detection method, negative pressure method, etc., which require a lot of manpower and time to detect, poor real-time performance, and relatively low efficiency. [0003] Long-distance monitoring of pipelines consumes a lot of manpower and material costs, and there is still the possibility of accidents caused by incomplete monitoring due to work mistakes. Contents of the invention [0004] Aiming at the problems existing in the pri...

AI Technical Summary

Problems solved by technology

[0002] Gas pipeline leakage will not only cause huge economic losses to the gas company, induce fires and pollute the environment, but also affect the use of gas users, and even endanger the personal safety of residents around the pipeline

The existing pipeline leakage detection methods include: segmental pressure method, magnetic flaw detection method, negative pressure method, etc., which require a lot of manpower and time to detect, poor real-time performance, and relatively low efficiency

[0003] Long-distance monitoring of pipelines requires a lot of manpower and material resources, and there is still the possibility of accidents due to work mistakes that lead to insufficient monitoring

Images