Обнаружение утечек в распределенном оптоволоконном трубопроводе – Комбинационный оптоволоконный датчик температуры комбинационного рассеяния света, поставщик, изготовитель, фабрика

Pipeline monitoring is a specific practical case of distributed fiber optic temperature measurement application. FJINNO provides fiber optic temperature measurement technology solutions and products.

Transportation is a transportation technology that utilizes pipelines to transport fluids such as gases and liquids. В последние годы, this technology has developed rapidly and has been widely used in fields such as energy, municipal construction, and water conservancy irrigation due to its advantages of large transportation volume, small land occupation, short pipeline transportation construction cycle, и низкая стоимость. It has become the main transportation mode for land water, масло, и газ, and is one of the five major transportation modes in the world today, along with railways, highways, water transportation, и авиаперевозки. It plays a crucial role in national economic and social development.

Метод система мониторинга трубопровода в режиме реального времени

В практических инженерных приложениях, трубопроводы часто проложены под землей и имеют большие расстояния. Трубопроводы, проложенные под землей в течение длительного времени, подвержены внешним воздействиям, таким как коррозия из окружающей среды., геологическое проседание, давление наземного транспортного средства, и человеческий ущерб, приводящие к авариям, связанным с утечками. Обеспечение безопасности трубопроводного транспорта является основополагающим требованием поддержания нормальной эксплуатации трубопроводов.. Следовательно, мониторинг состояния транспортных трубопроводов в режиме реального времени необходим для обеспечения безопасной эксплуатации трубопроводов. Традиционные методы обнаружения утечек трубопроводов включают ручную проверку., балансовый метод, метод волн отрицательного давления, и метод волн напряжения, и так далее. Все эти методы используются для обнаружения утечек в трубопроводах или после их возникновения., которые имеют такие недостатки, как сложное позиционирование, короткое расстояние, высокая стоимость, and no warning function. В последние годы, new sensing technologies using optical fibers as sensing elements and transmission media have overcome the shortcomings of traditional technologies and provided a new approach for pipeline leakage detection. Based on the advantages of corrosion resistance, малый вес, небольшие размеры, no need for electricity at each sensing point, устойчивость к электромагнитным помехам, высокая чувствительность, and the ability to achieve distribution, распределенный волоконно-оптический sensing systems have become the most widely used and promising technological means in the field of pipeline detection in China.

В практической инженерии, transportation pipelines generally pass through complex and diverse terrains, passing through mountains, valleys, железные дороги, highways, и так далее. Тем distributed fiber optic sensing system laid along the pipeline can provide continuous temperature monitoring for the entire line, achieve ultra long distance sensing monitoring, achieve all-round monitoring of transportation pipelines, and ensure the safe operation of the pipeline.

Тем распределенная волоконно-оптическая система датчиков can be divided into three types based on different fiber optic temperature measurement principles:

1. Distributed Rayleigh оптоволоконный датчик температуры
2. Distributed Raman fiber optic temperature sensor
3. Distributed Brillouin fiber optic temperature sensor

Since the successful development of a distributed Raman fiber temperature sensor experimental device using a semiconductor laser as the light source, the distributed Raman fiber temperature sensing technology has continuously developed and is in a mature stage in engineering. A large amount of saline water is generated during the construction of an underground gas storage in a certain area, and the saline water needs to be transported to a designated location for treatment. This project uses a pipeline leakage system to detect the saline water transportation pipeline. The optical fiber is buried in sand 10 cm below the pipeline, and temperature data is collected using two collection devices in series. Каждый 30 протокол, the collection devices transmit the data to the central control computer for data analysis and generate an alarm when a leak is detected. The system can automatically send an alarm, generate a report, regularly reset and restart the measurement, and requires almost no maintenance.

Using fiber optic sensing technology for oil simulation leakage testing, detecting changes in soil temperature around the pipeline based on Raman scattering and Brillouin scattering principles, in order to determine the location of the leakage point. Using temperature sensors and fiber arrays to collect changes in soil temperature, leakage testing was conducted on high-pressure natural gas in underground pipelines. The variation law of soil temperature around the leakage hole was studied, and combined with numerical calculations, the most realistic leakage model was established to provide guidance for fiber temperature detection of gas pipeline leaks.

Применение Распределенное измерение температуры оптоволокна technology in various fluid transportation pipeline leak detection fields has enormous potential. This paper discusses and analyzes the application of distributed fiber optic temperature measurement system in pipeline leakage detection from the aspects of its characteristics, принцип работы, fiber optic laying method, and practical application case analysis. The working principle of distributed Raman fiber optic temperature measurement system combines Raman scattering and time-domain reflection technology of light in the fiber optic,

Волоконно-оптический датчик температуры, Интеллектуальная система мониторинга, Производитель распределенного оптоволокна в Китае