Distributed fiber optic sensing pipeline leakage temperature vibration DTS, DVS, DAS, Avantatges

Sensor de temperatura de fibra òptica, Sistema de monitorització intel·ligent, Fabricant de fibra òptica distribuïda a la Xina

Introduction to Distributed Fiber Optic Acoustic Sensing System

A measurement system developed based on distributed fiber optic sensing technology. It is a comprehensive new distributed fiber optic sensing technology system that integrates multiple disciplines such as optics, electronics, mechanics, and digital signal processing, based on the Rayleigh scattering effect generated by optical signals during fiber optic propagation and the principle of optical time domain reflectometry (OTDR) Tecnologia. En aquest sistema, optical fibers are both devices for transmitting optical signals and sensing external information. Per això, they can continuously and quickly measure external acoustic and vibration information along the fiber optic cable.

Advantages and Applications of Distributed Fiber Optic Sensors

It has many advantages such as low loss, mida petita, pes lleuger, alta sensibilitat, Forta resistència a la corrosió, Anti interferències electromagnètiques, sense necessitat d'alimentació, i de baix cost, which make up for the shortcomings of traditional electrical sensors in monitoring range and system reliability, and have achieved rapid development in just a few decades. Les persones han aconseguit amb èxit la mesura dels canvis de temperatura, concentració, pressió, vibració, desplaçament, i índex de refracció mitjançant diversos sensors de fibra òptica. Fins ara, Diversos tipus de sensors de fibra òptica s'han utilitzat àmpliament en camps com la seguretat perimetral, aeroespacial, Monitorització de canonades, Enginyeria Energètica, i la recerca biomèdica. Entre ells, El valor més pràctic és, sens dubte, el sistema de detecció de fibra òptica distribuïda.

Sensor de temperatura de fibra òptica distribuïda for substations

The fiber optic temperature measurement system used for substation temperature monitoring can accurately and timely locate temperature anomalies on a single fiber optic cable through distributed fiber optic temperature testing based on Raman scattering temperature measurement technology; Al mateix temps, the system is equipped with multi-level temperature alarm values and temperature rise rate alarms, displaying temperature distribution curves in real time, and providing early warning before a fire occurs. This solves the problem that existing temperature measurement systems can only passively set a temperature threshold, which is prone to misjudgment and cannot accurately locate the location of the accident point. Distributed fiber temperature testing based on Raman scattering temperature measurement technology can accurately and timely locate temperature anomalies on a single fiber; Al mateix temps, the system is equipped with multi-level constant temperature alarm values and temperature rise rate alarms, displaying temperature distribution curves in real time, and providing early warning before a fire occurs, greatly reducing the probability of substation fires.

Oil pipeline leakage temperature vibration host

Actualment, oil and gas pipelines are an important component of petroleum and natural gas engineering. Due to corrosion, weld defects, external vibrations, and even theft and damage, pipeline leaks, damage to anti-corrosion coatings, and leaks and corrosion at pipeline connections such as flanges, threaded buckles, and packing boxes have become increasingly severe. Pipeline leakage not only causes obstruction of transportation, but also pollutes the environment and even triggers accidents such as explosions and fires, requiring a significant amount of manpower and resources for monitoring, maintenance, and management. So early prevention, timely warning, and location of pipeline leaks have very important practical significance.

Al mateix temps, oil and gas need to be heated during transportation to promote flow. The heating device heats the oil to a certain temperature and then transports it in pipelines. Tanmateix, excessive heating can cause resource waste and increase the cost of oil and gas transportation. How to set heating reasonably is of great significance for energy consumption control in oil and gas engineering. The temperature of oil in pipelines will decrease, forming a temperature gradient that decreases with transportation distance. The real-time and distributed monitoring values of this temperature can serve as an important basis for heating feedback control, which plays an important role in reasonable temperature control and reducing transportation energy consumption.

The comprehensive monitoring system for oil and gas pipelines is equipped with optical cables inside the pipelines, que estan connectats a l'amfitrió de monitorització de fibra òptica. Els cables òptics detecten els senyals de vibració dels oleoductes i gasoductes en temps real i els transmeten a l'amfitrió de monitorització de fibra òptica per detectar l'estat de fuites dels oleoductes i gasoductes en diferents posicions. Entre ells, Els senyals de vibració poden reflectir principalment vibracions externes i fins i tot robatoris i danys.

Distributed fiber optic monitoring of water pipeline temperature

Once invaded by malicious excavation, drilling, or geological disasters causing pipeline rupture and damage, it will be destroyed and even lead to environmental pollution and economic losses. In order to maintain safety along the pipeline and prevent human or environmental damage, it is necessary to conduct real-time online monitoring of the working status of water pipes and provide timely and accurate advance alarms for threatening intrusion events. Per això, pipeline safety monitoring technology plays an important role in maintaining pipeline transportation and has social and economic significance.

Distributed fiber optic temperature measurement system is a technology used for real-time measurement of temperature spatial distribution, which can be widely applied to temperature detection and fire warning in coal mines, tunnels, large buildings, transmission cables, safates de cables, and other areas. The distributed fiber optic temperature measurement system mainly uses the principle of spontaneous Raman scattering inside the fiber optic to measure temperature, and uses the principle of optical time domain reflection to locate and realize the temperature sensing system for measuring the temperature field.

DAS distributed fiber optic acoustic vibration monitoring

The distributed fiber optic sensing system based on the principle of phase sensitive photosensitive time-domain reflection (Φ – OTDR) has the advantages of simple structure, long detection distance, ability to locate multiple disturbances simultaneously, Alta resolució, and accurate positioning accuracy. It can be applied in water supply pipeline leak monitoring to detect and locate the leak location in real time without causing any damage or affecting the normal operation of the pipeline. Distributed acoustic sensing (DAS) is based on the Φ – OTDR technology, which detects the phase signal of backscattered light in the sensing fiber to achieve the detection of distributed sound or vibration signals. It not only provides sound or vibration event intensity information using phase and amplitude, but also uses linear quantitative measurement values to obtain sound time phase and frequency information.