OTDR型分布式光纤传感器在油气管道监测中应用.pdfVIP

　 2015年 2015　 　 第3期 Pipeline　 Technique　 and　 Equipment No．3　 OTDR型分布式光纤传感器在油气管道监测中的应用 涂勤昌,韦　 波,张真毅,史训兵 (浙江中欣动力测控技术有限公司,浙江宁波　 315010) 　 　 摘要:布里渊光时域分析仪BOTDA和分布式声音传感器DAS是2种测量距离可达50~100 km 的 先进OTDR型分布式光纤传感器,文中详细分析了它们的测量原理和技术优势,阐述了这2种传感器 在油气管道泄漏、第三方破坏以及管道周边地质灾害在线监测应用的设计方案,并介绍了国内外成功 应用案例。 分析及应用案例表明:BOTDA和DAS 可实现油气管线多参量分布式测量和多事件准确定 位,将有效保障长输油气管道的运营安全。 关键词:分布式光纤传感;BOTDA;DAS;油气管道;在线监测 - - - 中图分类号:TP212　 　 　 文献标识码:A　 　 　 文章编号:1004 9614(2015)03 0028 04 OTDR-type Distributed Optical Fiber Sensors and Application of Oil and Gas Pipelines Online Monitoring TU Qin-chang,WEI Bo,ZHANGZhen-yi,SHI Xun-bing (Zhejiang Sinobloom Controls Co.,Ltd.,Ningbo315010,China) Abstract:Brillouin optical time domain analyzer BOTDA and distributed acoustic sensors DAS are two kinds of advanced OTDR-type distributed opticalfiber sensors,whichcanachieve50to 100kilometersmeasuringdistance.Themeasuringprinciple and technical advantages of these two sensorswere given. The application of oil and gas pipelines online leakage,the third-party damage and geological disasters monitoring based on the sensors as well as the successful application cases at home and aborad were desribed. The analysis and cases indicate that BOTDA and DAS can obtain multi-parameter measurements and multi-event positioning,thus ensuring long-distance oil and gas pipelines safe. Key words:distributedfiber sensing;BOTDA;DAS;oil and gas pipeline;online monitoring - 0　 引言 所限,Mach Zehnder、Sagnac 干涉仪仅可实现单一振