电磁流量计磁性流体流量监测技术-研究

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1、万方数据东北大学硕士学位论文AbstractResearchonMagneticfluidflowmonitoringofElectromagneticFlowmeterAbstractOneofthefactorstoensuretheaccuratemeasurementofelectromagneticfiowrneteristhemagneticfieldinthesensorpipelinemustbehighlystable．However，inthemeasurementofmagneticfluid(suchasironoreslurry)，thema

2、gneticmaterialinthefluidwillcausethesensorpipemagneticinstability,whichwilldirectlyleadtothelowaccurcyofflowmeasurement．Howtogetahigh-presicionofflowmeasureofmagneticfluid、ⅣimEMFisstillaproblem．Thus，thesolutionofelectromagneticflowmetermagneticfluiddetection,willgreatlyexpandtheapplicat

3、ionfieldsoftheelectromagneticfiowmeter,alongwit11hi曲theoreticalsignificanceandpracticalvalue．Thispapertriestoexploreamethodofreal-timemonitoringofasensorpipeline，whichcouldrevisethemagneticfieldintensitytimelyandimprovetheaccuracyoftheflowmonitoring．Thepaperpresentedanewapproachofmagnet

4、icfielddetectionwhichissuitablefortheEMFsensorpipeline．ItistheSimuitaneousdifferential·integralmagneticfieldstrengthdetectionmethod．TheinducedvoltageobtainedbytheinductioncoilCanbeusedasthemagneticfieldintensitysignal，andgetacorrectionfactorbasedontheoriginalmagneticfield，whichcouldelim

5、inatetheinfluenceofthemagneticfieldsubstanceinthefluid．Inthispaper．firstly,setupanexperimentalplatformtoconfirmthefeasibilityofthismethodmentionedbefore；andthencreateamathematicalmodel0ftheflowmeterpipemagneticfieldtoseekanoptimalmeasuringposition,andtherelationshipbetweenthecorrespondi

6、ngpipelinemagneticfieldsandmagneticfluidcontainingmagneticdensity．Studieshaveshownthatthebestmeasurementpositionisinthemiddleoftheyoke，themagneticfieldintensityislinearlyrelatedtothemagneticdensityofthefluid．Afterthat，putanalogmagneticfluidofdifferentconcentrationsintothepipelinetogetth

7、edataofmegnet-III-万方数据东北大学硕士学位论文Abstracticfieldstrength，withthesedatacouldcalculatethecoefficientofthelinearrelationl．WiththerelationshipcallforecastthemagneticfluidcontainingmagnetiCdensityforreal-time．Experimentalresultsshowthat，whenthedensityofmeg／xericmaterialisbetween20％an