Arriba 10 Fabricantes de sistemas de monitoreo de seguridad de vibración de oleoductos y gasoductos enterrados de fibra óptica distribuidos

Underground pipelines are widely present in urban environments, such as water conservancy pipelines, Oleoductos y gasoductos, thermal pipelines, etc., and are a key part for the normal operation of the entire city. Especially with the rapid development of the economy and society, pipeline safety monitoring is increasingly valued by construction personnel and pipeline maintenance personnel in urban construction. Pipeline safety is related to the safety of people’s livelihoods and public assets, and more and more pipeline users are realizing its importance. Once a safety accident occurs in a pipeline, it can cause huge property damage and even loss of life. For the safety protection requirements of buried pipelines, traditional detection methods often rely on regular personnel inspections, which inevitably leads to untimely safety monitoring and even neglect of hazardous vibration sources. Segundo, in most scenarios, multiple pipelines intersect and multiple pipeline extension directions need to be detected simultaneously. Además, traditional detection methods use artificial intelligence to identify vibration source patterns, but in practical application scenarios, vibration source patterns are much more common than pre fabricated items. Además, in combination with reality, end users only need to monitor and predict the degree of damage caused by vibration sources to pipelines to make corresponding decisions. A multi-channel long-distance monitoring method for pipeline vibration warning is urgently needed to address the above issues.

Distributed fiber optic sensors have many advantages, such as low loss, Tamaño pequeño, Peso ligero, Alta sensibilidad, Fuerte resistencia a la corrosión, Resistencia a las interferencias electromagnéticas, Sin necesidad de fuente de alimentación, y de bajo costo. They make up for the shortcomings of traditional electrical sensors in monitoring range and system reliability, and have developed rapidly in just a few decades. Las personas han logrado con éxito la medición de los cambios de temperatura, concentración, presión, vibración, desplazamiento, y el índice de refracción utilizando varios sensores de fibra óptica. Hasta ahora, Varios tipos de sensores de fibra óptica se han utilizado ampliamente en campos como la seguridad perimetral, aeroespacial, Monitoreo de tuberías, Ingeniería energética, y la investigación biomédica. Entre ellos, El valor más práctico es, sin duda, el sistema de detección de fibra óptica distribuida.

El distributed vibration sensing system uses a narrow linewidth laser as the system light source, and utilizes the coherent fading effect between backscattered Rayleigh scattering signals (RBS) to achieve distributed measurement of disturbance signals. When an external disturbance event acts on the optical fiber, the refractive index of the fiber core and the length of the fiber at the disturbance location will change, causing amplitude and phase changes in the RBS at that location. By analyzing the Rayleigh scattering curves before and after the occurrence of disturbance events, it is possible to detect dynamic disturbance events. This technology has high sensitivity, fast measurement response speed, and can achieve long-distance fully distributed dynamic monitoring without blind spots. Distributed fiber optic vibration monitoring systems have been widely used in fields such as tunnel gallery security positioning, power system cable monitoring, online monitoring of information pipelines, high-speed railway security systems, long-distance pipeline safety monitoring, and perimeter security of key facilities.

The comprehensive monitoring system for oil and gas pipelines is equipped with optical cables inside the pipelines, que están conectados al host de monitoreo de fibra óptica. Los cables ópticos detectan las señales de vibración de los oleoductos y gasoductos en tiempo real y las transmiten al host de monitoreo de fibra óptica para detectar el estado de fugas de los oleoductos y gasoductos en diferentes posiciones. Entre ellos, Las señales de vibración pueden reflejar principalmente vibraciones externas e incluso robos y daños.

The optical cable also senses the acoustic signals of oil and gas pipelines in real time and transmits them to the fiber optic monitoring host to detect the leakage status of oil and gas pipelines at different positions. Entre ellos, acoustic signals can mainly reflect the situation of internal leakage. Set up a pressurization device to close the input and output ends on both sides of the oil and gas pipeline and actively pressurize them. The fiber optic monitoring host uses optical cables to perform high-precision acoustic monitoring and analysis on the pressurized oil and gas pipeline, finely detecting the damage status of the pipeline. By sealing and applying pressure, interference from other factors can be eliminated, allowing for more accurate detection of leaks.

Sensor de temperatura de fibra óptica, Sistema de monitoreo inteligente, Fabricante de fibra óptica distribuida en China