中国计量学院学报2013，Vol.24Issue(2)：114-118,5.
混合干涉型分布式光纤天然气管道泄漏检测及定位方法研究
Study on hybrid interference distributed fiber-optic natural gas pipeline leakage detection and location method
摘要
Abstract
A distributed fiber-optic natural gas pipeline leakage detection system based on the hybrid interferometer principle of Mach-Zehnder and Sagnac was introduced.The detection principle and the leakage location method of the system are described.The experiment was carried out to detect the leakage point at 6 032 m from the Faraday rotator mirror,with 20 repetition.The influence of the angle between sensor fiber and the leakage hole on the detection system performance was tested.The experimental results show that the system is able to detect and locate the slight leakage signal of the gas pressure within the pipeline at 0.3 MPa,leakage aperture of 2.5 mm,with the average relative positioning error of 1.29％.The detection system can detect and locate the leakage signal of the pipeline diameter in 40 mm and the angle within the range of 0～180°.关键词
混合干涉仪/泄漏检测/定位方法/管道泄漏检测实验Key words
hybrid interferometer/ leakage detection/ location method/ pipeline leakage detection experiment分类
能源科技引用本文复制引用
章仁杰,杨其华,王强,胡正松..混合干涉型分布式光纤天然气管道泄漏检测及定位方法研究[J].中国计量学院学报,2013,24(2):114-118,5.基金项目
质检行业公益性科研专项(No.201110058,201310152),浙江省杰出青年基金项目(No.LR13E040001). （No.201110058,201310152）
