Sensores de temperatura de fibra óptica INNO ,Sistemas de control de temperatura.
There are some minor defects in the production process of natural gas transmission pipelines. Under long-term transmission loads and the high temperature and corrosive environment of the transmission medium, pipeline corrosion will accelerate and worsen, ultimately leading to pipeline damage and leakage accidents, causing huge direct economic losses, and triggering a series of secondary disasters, such as fires and environmental pollution, posing a threat to people’s life safety. Por lo tanto, safety issues during natural gas pipeline transportation, especially online real-time leak detection of natural gas pipelines, have always been a top priority that needs to be considered in safety production.
Actualmente, there are many leakage monitoring methods for gas pipelines, which can be divided into mass/volume balance method, applied statistical method, negative pressure wave method, transient model method, Fibra óptica distribuida método, etc. based on the different gas flow parameters monitored inside the pipeline. The gas pipeline leakage detection method based on Fibra óptica distribuida sensing has been widely studied and applied due to its advantages of good sensitivity, Alta precisión de posicionamiento, short detection time, fuerte adaptabilidad, and long system life. When a gas pipeline ruptures at a certain point and leaks, it will disrupt the normal pressure balance in the pipeline, release the elastic energy of the fluid in the pipeline system, and cause instantaneous oscillation to produce sound waves. The leakage sound wave is generated by the excited energy of gas leakage, and is a continuously emitted signal with a frequency of several hundred kHz, mainly propagating along the pipe wall. By using optical fibers installed along the pipeline, this acoustic signal can be monitored and collected. By extracting and identifying the characteristics of the acoustic signal, it can be determined whether there is a leak in the pipeline.
Ventajas de Fibra óptica distribuida natural gas transmission pipeline security vibration monitoring technology:
1. Medición distribuida continua de temperatura y vibración sin puntos ciegos de medición
2. Detección simultánea y localización precisa de múltiples eventos.
3. La fibra óptica es un sensor que combina transmisión y detección.
4. 40 kilómetros de distancia de medición ultra larga, rica información de medición
5. Velocidad de respuesta rápida, alarma dentro 1 segundo
6. Transmisión de señal óptica, completamente aislado eléctricamente, Resistente a las interferencias electromagnéticas
7. Seguridad intrínseca, Adecuado para funcionamiento a largo plazo en entornos inflamables y explosivos.
8. Medición estable y confiable con baja tasa de falsas alarmas
9. Larga vida útil de las fibras ópticas., arriba a 30 años sin mantenimiento
Performance characteristics of sistema distribuido de monitoreo de vibraciones de fibra óptica:
Larga distancia de temperatura: 40Km
Tiempo de respuesta rápido: típico 1 segundo
Alta precisión de posicionamiento: 2-50m
Alta sensibilidad: Puede percibir vibraciones en un radio de 40 m alrededor del cable óptico.
Monitoreo simultáneo de vibración y temperatura.
Función de monitoreo en línea para fallas de fibra óptica.
Software amigable para el usuario que proporciona una interfaz visual
Performance indicators of sistema distribuido de monitoreo de vibraciones de fibra óptica:
Technical performance
Fiber type single-mode fiber
Measurement distance of 40km
Positioning accuracy of 1m~50m
Sampling interval of 0.5m
Measurement time typical 1 segundo
Measurement channels 1, 2, 4, 8
Vibration signal bandwidth ≤ 5KHz
Vibration measurement sensitivity ≤ 40m
Rango de medición de temperatura -100 ℃ ~ 200 ℃
Sensor de temperatura de fibra óptica, Sistema de monitoreo inteligente, Fabricante de fibra óptica distribuida en China
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