【摘要】 研制了一种基于BOTDA技术的三元乙丙橡胶基底的分布式光纤布里渊散射油敏传感器，可在分钟量级精准检测并定位小规模漏油事件，灵敏度高，可重复使用。将三元乙丙橡胶(EPDM)基底的油敏传感器沿模拟输油管线下方油槽内铺设，用布里渊光时域分析仪(BOTDA)实时监测浸油后传感光纤中布里渊散射频移，测试数据表明布里渊散射频率随时间响应灵敏度为2.5 MHz/min,可在2 min内发现并定位漏油事件，空间分辨率为1 m,漏油传感器可重复使用。实验证明该油敏传感器在长距离输油管线、油库等需长期分布式实时漏油监测的应用具有可行性。更多还原

【Abstract】 An EPDM-based distributed optical fiber Brillouin scattering oil leakage sensor based on Brillouin optical time-domain analysis(BOTDA)is developed, which can accurately detect and locate small-scale oil leakage with high sensitivity and reusability. The optical fiber is embedded in EPDM and laid along the oil tank under the pipeline, and optical fiber Brillouin scattering frequency is monitored in real time by BOTDA. The results of the oil leakage experiment show that the frequency response sensitivity with time is 2.5 MHz/min, and the oil leakage can be accurately located in 1 m and detected within 2 minutes, and the oil leakage sensor can be used repeatedly indicating show that the technology is feasible and can be used in long-distance oil pipelines, oil depots and other places that need long-term dynamic real-time nondestructive oil leakage monitoring.更多还原