基于分布式光纤传感器的管道安全检测

Pipeline Safe Testing Based on Distributed Optic Fiber Sensor

输油管道在运行时存在着泄漏、堵塞等不安全事件,利用分布式光纤传感器检测管道泄漏、堵塞信号,可以实时检测管道沿途所发生的不安全事件。利用相关性法确定两个测试信号的延时便可计算不安全事件发生的位置。阐述了该检测方法的原理及定位方法,通过理论分析及试验表明该方法可以提高管道不安全测试的定位精度及灵敏度。

Unsafe incidents,like pipeline leak and blockage,exist at run-time,that were detected by distributed optic fiber sensors,that occurred along the pipeline in real-time.The delay time between two test signals was determined by correlation method,thus the location of the unsafe incident can be computed.The location methods and principle of the detection were introduced.Theoretical analysis and experimental results show the position accuracy and sensitivity of the tube unsafe for the method can be improved.