Како да се примени дистрибуирано сензори за оптички влакна во нафтоводите

The application of optical fibers in pipelines

Pipelines are essential material transportation facilities for important systems such as natural gas, oil, urban heating, and gas. It is of great significance for the development of the national economy and the transportation of energy and materials. Во исто време, pipeline facilities have a huge investment and are mostly located in trenches or buried below the ground. They have a certain degree of concealment in space. If they are damaged due to human or natural reasons, it is difficult to detect them in a timely manner. The leakage of flammable and explosive substances will bring great safety hazards. If this causes a fire or explosion accident, it will bring huge economic losses, and even cause significant casualties and social disorder.

The existing pipeline monitoring methods can only be disposed of by monitoring the pressure changes in pipeline sections or detecting problems such as pipeline deformation or leakage. Затоа, pipeline disposal is mostly after an event has occurred, which has caused certain consequences. Во моментов, there is no reliable technical measure for effective monitoring of pipeline accidents in the early stage. If existing monitoring devices such as electromagnetic sensors are used, pipeline leakage may cause safety accidents such as fires or explosions, and it is not possible to achieve comprehensive monitoring of the entire pipeline. Затоа, it is necessary and urgent to develop a comprehensive and timely monitoring system and method that is less prone to other adverse reactions with pipeline media.

The fiber optic monitoring device for pipeline vibration can monitor and analyze municipal pipelines such as natural gas in real time, and can realize the detection and warning of natural gas pipeline infringement events and the detection and analysis of damage and leakage points. Including induction devices, sensing devices, monitoring controllers, and warning devices; The sensing device is fixed on the pipeline, and the sensing device includes fiber optic cables laid along the pipeline and clamps used for installing fiber optic cables and forming a fixed connection with the pipeline; The sensing device includes a vibration collector for monitoring the vibration of fiber optic cables and a fiber optic thermometer for monitoring the temperature changes of fiber optic cables; The vibration collector and fiber optic thermometer are both connected to the monitoring controller signal, which is connected to the warning device signal and transmits warning information and sends warning commands to the warning device.

Дистрибуиран систем за мерење на температурата со оптички влакна Pipeline Fiber Optic Leakage Technology

The advantages of pipeline transportation are obvious, and people’s production and life are already inseparable from pipelines. Сепак, due to the corrosion of the natural environment and transportation medium, defects in materials and construction, as well as the impact of human excavation damage and natural disasters such as earthquakes, pipelines may experience leaks, explosions, and even explosions. Besides considering the serious economic losses caused by pipeline leakage or explosion, it can also cause the leakage of harmful substances, pollute the environment, and even lead to poisoning and explosion accidents, endangering personal safety. Затоа, early leakage monitoring of pipelines, as well as early warning of geological hazards, mechanical and manual construction, and even malicious damage to pipelines, drilling and theft that endanger pipeline safety, are particularly important. The traditional leakage monitoring methods cannot monitor pipeline leaks, let alone determine the location and area of the leakage point, and cannot provide real-time monitoring and early warning for various natural disasters, mechanical operations, and human operations that endanger pipeline safety. Покрај тоа, the shortcomings of existing technologies in monitoring pipeline safety hazards include: point sensors, which cannot meet the needs of long-distance pipeline safety monitoring; Sensors require power supply and are not suitable for leak monitoring in flammable and explosive pipelines.

The fiber optic composite pipeline and its monitoring system solve the problem of existing technologies being unable to implement pipeline leakage monitoring, pipe burst and excavation damage warning. It can fully cover long-distance pipelines, without monitoring blind spots in time and space, and distributed fiber optic sensors are passive. It solves the problem of no power supply along long-distance pipelines, is not affected by electromagnetic and lightning interference, has good monitoring effect, high monitoring accuracy, and accurately locates the location of safety hazards. The fiber optic unit can simultaneously monitor the leakage, вибрации, and strain of pipelines, and the composite judgment of multiple monitoring results improves the accuracy of pipeline warning.

Characteristics and Functions of Distributed Fiber Optic Pipeline Leakage Vibration Temperature and Strain Monitoring System

1. Откривање на истекување на нафтовод: Со спроведување на следење на температурата околу оптичките кабли, се постигнува целта на откривање на истекување на нафтоводот;

2. Абнормален аларм: Кога откриената температура го надминува зададениот опсег, ќе биде побарана порака за аларм и ќе бидат дадени предлози за операција;

3. Аларм за диференцијална температура: Параметрите на алармот поддржуваат рачно поставување, Сигнали за аларм за излезно реле и информации за позиционирање на алармот, и да постигнете аларм за диференцијална температура;

4. Поставување зона за аларм: Системот може да ја програмира должината и алармните точки на алармната област како целина, и може флексибилно да се прилагоди според ситуацијата на лице место;

5. Анализа на податоци: складирање, прашување, и анализа на историски податоци;

6. Далечински пристап: Системот може да се поврзе со индустриски етернет и да пренесува податоци до различни нивоа на оддели за управување за да постигне далечински пристап.

Сензор за температура со оптички влакна, Интелигентен систем за следење, Дистрибуиран производител на оптички влакна во Кина