光纤光栅在热力管道泄漏检测中的应用.pdfVIP

, , , , , , , ( 东北石油大学 土木建筑工程学院, 大庆 163318) : 采用光纤光栅温度传感技术实现热力管道 漏在线检测热力管道 漏时, 漏出的 热水引起热力管道周围土壤温度场温度升高利用光纤光栅温度传感器的温度特性, 结合热力管 道 漏处的温度场变化规律, 进行了埋地热力管道 漏的理论分析和光纤光栅 漏检测系统的工 程应用, 实现了热力管道关键点温度连续监测, 能够及时准确地发现 漏, 为管道 漏检测技术提 供新方法 : 光纤光栅; 管道 漏; 温度传感器; 温度场 : T N246; T K 31; T G115 . 28 : A : 2010) 10079 104 Leak Detection to Heating Power Pipeline with Optical Fiber Grating YUAN ZhaoQing, LIU YingCh n, LIU Yan, YU YaH i, XU SongZhi, LI Yan, LI XiaoLi, TENG ZhenChao ( Civ il Eng ineering Co llege, No r heas Pe r oleum U niver si y , Daqing 1633 18, China) Abstract: T empera ure sensing echnique of op ical f iber gr a ing is u sed o realize online leak de ec io n o hea ing po w er pipeline. W hen he pipeline is leaking , he em pera ur e f ield a round pipeline is increasing . By using emper a ur e char ac eris ic o f op ical f iber g ra ing empera ure sensor w i h he chang ing law o f empera ure f ield a leakage lo ca ion , heo re ical analysis on leakage of hea ing pow er pipeline is car ried ou and leak de ec io n sy s em o f op ical f iber g ra ing is applied o he eng ineering . T he sys em of o p ical f iber g ra ing is r ealized he co n inual moni or of he empera ure a key poin , w hich can f ind leakag e o f pipeline r uly and off er a new me hod o leak de ec io n o pipeline. Keywords: O p ical f iber ; P ipeline leakag e; T empera ure senso r; T empera ure f ield , , ( , ) 2000 12 1 , , , , 34 m2 ; , , , [ 5- 7] , [ 1- 4]