检验检测与监测技术42聚乙烯燃气埋地管道检测技术任峰续宏毅刘健生建文刘长征孟涛(中国特种设备检测研究院北京100029)摘要：目前导致聚乙烯燃气埋地管道管体失效引发泄漏爆炸的主要原因包括管道本体质量缺陷、管道焊接缺陷、外力机械损伤和其他因素等，针对这几类影响因素提出了相对应的检测方法，包括目测法、力学性能试验、无损检测方法和管道定位探测技术。通过研究对比几种管道定位探测设备，确定了利用燃气PE管线探测仪GPPL+探地雷达的技术组合进行聚乙烯管道探测的技术方案，并在现场应用中取得了较好的应用成果。针对目前的聚乙烯管道探测难题，提出了管道内示踪线探测技术，开发研制了一种能通过聚乙烯燃气管道90°直角弯头将示踪线敷设于管道内部的牵拉装置，是比较有前景的聚乙烯管道探测新技术。关键词：聚乙烯燃气管道燃气泄漏检测聚乙烯管道探测管道定期检测DetectionTechnologyofPolyethyleneGasBuriedPipelineRenFengXuHongyiLiuJianShengJianwenLiuChangzhengMengTao(ChinaSpecialEquipmentInspection&ResearchInstituteBeijing100029)AbstractAtpresent,themaincausesofleakageexplosioncausedbythefailureofpolyethylenegasburiedpipelineincludepipelinebodyqualitydefects,pipelineweldingdefects,externalmechanicaldamageandotherfactors.Aimingattheseinfluencingfactors,thecorrespondingdetectionmethodsareproposed,includingvisualmethod,mechanicalpropertytest,nondestructivedetectionmethodandpipelinepositioningdetectiontechnology.Bystudyingandcomparingseveralpipelinepositioninganddetectionequipment,thetechnicalschemeofpolyethylenepipelinedetectionbyusingthetechnicalcombinationofGasPEpipelinedetectorGPPL+groundpenetratingradarisdetermined,andgoodapplicationresultshavebeenobtainedinfieldapplication.Inviewofthecurrentdifficultproblemofpolyethylenepipelinedetection,thetracerlinedetectiontechnologyinthepipelineisproposed,andatractiondevicewhichcanlaythetracerlineinsidethepipelinethroughthe90°rightangleelbowofpolyethylenegaspipelineisdeveloped.Itisapromisingnewtechnologyforpolyethylenepipelinedetection.KeywordsPolyethylenegaspipelineGasleakagedetectionPolyethylenepipelinedetectionPipelineregulardetection中图分类号：X933.4文献标志码：B文章编号：16...
