基于负压波和流量检测管道泄漏定位系统研究

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1、北京交通大学硕士学位论文基于负压波和流量检测管道泄漏定位系统研究姓名：李彦荣申请学位级别：硕士专业：检测技术与自动化装置指导教师：陈广华20080601ABSTRA(了rABSTRACTABSTRACT：TheleakingaccidentoftransportationpipelineofcrudeoilnotonlycausestheoillOSSbutalsocausespollutionoftheenvironment,andfuI'thermoremayalSOcauseseriOuscasualties．Leaka

2、geaccidentsintransportationpipelineOccurfrequentlyinrecentyears．Inordertoguaranteethepipelinesworksafelyandinii姚ethelossescausedbyleakageaccidents，itisnecessarytostudyleakagedetectingtechnologytoraisethesensitivityofdetectionandaccuracyoflocalization．Pipelineleakage

3、detectionisamulti-fieldandcross．subjectthesiswhichinvolvedmanysubjects，suchaspipelinehydrodynamics，thermodynamics，sensortechnology,signaldetectionandsignalprocessing．Athoroughresearchhasbeendoneinthispapertothepipelineleakagedetectiontechnology．Theresearchstatusofpi

4、pelineleakagedetectiontechnologyhomeandabroadissummarizedinthispaper,andtheprinciples，methods，difficultiesandsolutionsofthepipelineleakagedetectiontechnologyisalsodescribedindetail．Theanalysisonpropagationlawofnegativepressurewaveandmethodofwavevelocitycalculationis

5、giveninit；Flowequilibriumtheoryisusedinthepapertomakethejudgrnentthatwhethertheleakagehasoccurredornot；Thesingularpointofpressuresignalsisacquiredbywaveletanalysistolocatetheleakagepoint；Simultaneoussignalcollectionbetweenboththeheadandendofthepipeisrealizedbyadopti

6、ngGPS．Accordingtheneedsofpipelineleakagedetection，hardwareofthesystemisselected，anacquisitioncardisdesigned，thecomputeranalysessoftwareiswelldevelopedinthepaper,meanwhileallexperimentalplatformisbuiltinthelaboratory,SOthesimulatingexperimentwasdoneandtheexperimental

7、resulthasbeenwellanalyzed．KEYWORDS：TransportationPipeline；LeakageDetection；WaveletAnalysis；NegativePressureWave；FlowEquilibriumTheoryCI．ASSNO：TP277vll学位论文版权使用授权书本学位论文作者完全了解北京交通大学有关保留、使用学位论文的规定。特授权北京交通大学可以将学位论文的全部或部分内容编入有关数据库进行检索，并采用影印、缩印或扫描等复制手段保存、汇编以供查阅和借阅。同意学校向国家有

8、关部门或机构送交论文的复印件和磁盘。(保密的学位论文在解密后适用本授权说明)学位论文作者签名：薛笊签字日期：卅噌年e月pEt一辄邯1％签字日期：>D鸹年厂月／o1日作者简历独创性声明本人声明所呈交的学位论文是本人在导师指导下进行的研究工作和取得的研究成果，除了文中特别加以标注