Distributed fiber optic pipeline leakage temperature monitoring sensor, fabrikant, fabrikant

Fiberoptisk temperatursensor, Intelligent overvågningssystem, Distribueret fiberoptisk producent i Kina

Distributed fiber optic sensors themselves have the characteristics of light weight, lille størrelse, easy installation, høj følsomhed, resistance to electromagnetic interference, korrosionsbestandighed, no electric sparks, and can achieve distributed and real-time online monitoring. They can replace traditional electrical sensors to complete strong electromagnetic interference, strong corrosiveness, distributed and real-time online temperature, vibration and other signal detection in long-distance environments. I de senere år, fiber optic sensing detection technology has been widely used in coal mine fire monitoring, tunnel fire monitoring, gas pipeline leakage detection and other fields. The application of distributed fiber optic temperature measurement technology in pipeline safety monitoring will have excellent prospects.

Principle of Distributed Fiber Optic Pipeline Leakage Temperature Measurement

After a pipeline leak occurs, the temperature near the leak site will change. Crude oil needs to be transported by heating. If there is a leak in the pipeline, the temperature around the leak point will increase; For gas pipelines, due to the Joule Thomson effect, the temperature around the leakage point of the gas pipeline will decrease. To this end, FJINNO provides a distributed fiber optic temperature detection method based on spontaneous Raman scattering effect and optical time domain reflection principle for distributed and real-time online monitoring of pipeline safety, which determines whether the pipeline leaks based on changes in temperature at the leakage point.
Fiberoptisk temperaturmålesystem monitors the safety status of pipelines based on the detection of temperature along the pipeline. In response to the detection requirements for small temperature changes caused by leaks along long-distance pipelines or large temperature changes caused by fires, it has been experimentally demonstrated that the system can achieve a temperature measurement accuracy of ± 1 ℃ within a temperature monitoring distance of 10km, with a temperature measurement range of -25 ℃~+200 ℃, a positioning accuracy of ≤ 2m, and a system dynamic response time of<3s. And it has been verified through on-site experiments that the system can quickly determine and accurately locate the location of pipeline leakage points or fire incidents. The proposal of this system can provide reference and guidance for distributed and real-time online safety monitoring and early warning of long-distance pipelines, and will have good application prospects in pipeline safety monitoring.

Karakteristika for Distributed Fiber Optic Pipeline Leakage Temperature Monitoring System

1. The outer packaging of the Distribueret fiberoptisk temperaturmålingssystem adopts armored optical cables, which are easy to construct and do not require later maintenance;

2. Comprehensive monitoring of the pipeline network without blind spots, real-time online 24/7, capable of simultaneous positioning of multiple monitoring points with high positioning accuracy;

3. The Distribueret fiberoptisk temperaturmålingssystem software can obtain the trend of changes in pipeline insulation effect through big data accumulation and intelligent analysis;

4: It has the advantages of real-time online, høj følsomhed, high measurement accuracy, og høj pålidelighed;

5: It has inherent safety, anti electromagnetic interference and lightning protection requirements, and strong environmental adaptability;

6: Suitable for remote real-time online monitoring;

7: Long lifespan and simple system.