Research on novel distributed optical fiber pipeline leakage detection technology and location method - Details

Author：

Hang, Lijun (Hang, Lijun.) | He, Cunfu (He, Cunfu.) (Scholars：何存富) | Wu, Bin (Wu, Bin.) | Cai, Dongsheng (Cai, Dongsheng.) | Song, Yanrong (Song, Yanrong.) (Scholars：宋晏蓉)

Indexed by：

EI Scopus PKU CSCD

Abstract：

An　in-line　distributed　optical　fiber　sensor　array　based　on　Sagnac　interferometer　is　developed,　and　it　is　used　to　monitor　and　locate　leakage　for　the　fluid-filled　(or　gas-filled)　pipelines　in　real-time.　The　advantage　of　the　sensor　is　that　it　can　increase　monitoring　distance　by　using　two　sensing　fibers.　The　representation　of　phase　change　for　optic　signal　caused　by　leakage　is　formulated;　the　monitor　principle　and　the　leakage　source　location　method　for　the　detection　system　are　analyzed.　The　experiment　is　carried　out　at　3.990　km　and　4.024　km　from　Faraday　rotator　mirror　1　and　Faraday　rotator　mirror　2,　respectively.　The　results　verify　that　the　system　can　realize　leakage　detection　and　locate　leakage　source　accurately,　and　the　error　is　less　than　1.05%.

Keyword：

Sensor arrays Optical fibers Interferometers Fiber optic sensors Pipelines

Author Community：

[ 1 ] [Hang, Lijun]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China
[ 2 ] [He, Cunfu]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Wu, Bin]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Cai, Dongsheng]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China
[ 5 ] [Song, Yanrong]College of Applied Science, Beijing University of Technology, Beijing 100022, China