新型流量计动态节流元件文丘里管的研究与优化.pdf

《新型流量计动态节流元件文丘里管的研究与优化.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、Jun．2015HydromechatrorficsEngineeringVol_43No．12HydromechatronicsEngineeringhttp：／／jdy．qks．cqut．edu．caE-mail：jdygcyw@126．comResearchandoptimizationontheventuritubedynamicthrottlingelementofnewflowmeterJian—meiDING．HWANG(CollegeofMechanicalandElectricalEngineering，North

2、eastForestryUniversity，Harbin150040，阳)Abstract：Accordingtotheworkingprocessofdynamicthrottlingelementflowrneter，theReyn0ldsnumberkeeDsconstantwhentheflowissteady．ThewaytochangethepressuredropistochangethelocalpreSSUre1oss．BasedontheFluentsoftware，ithasbeenanalyzedthath

3、owthestructureparametersofventuritubeinnuencetheDI_es—suredrop·Withthecompletionofflowmeterprototype，thedynamicthrottlingelementwastestedbyusingakindofbinaryflowcalibrationplatform．Accordingtothetestt'esults，itcouldconcludethattheoDtimizationcouldper-fcctlymeettherealf

4、lowconditi0n．一Keywords：Flowmeter，VenturitubePressuredrop，d0i：10．3969／j．issn．1001—3881．2015．12．002Documentcode：ACLCnumber：TH8141Introduction2TechnologyanalysisThesmalldiameterofpipelineandimpuritiesinourTheschematicshowninFig．1istheworkingstatusheatingsupplysystemmakest

5、henormalflowmeteI弓ofdynamicthrottlingelement．hardtowork，suchasvortexflowmeter，turbineWhenthefluidflowsthroughthedynamicthrottlingflowmeter，electromagneticflowmeterandthedifferen．element，apressuredropwilloccur．Atthesametialpressureflowmeterwithholes．Tomeetthede．time，fbe

6、fluidwillimposeadrivingforcetothedv．mandofheatmetering，wedesignakindofnewnamicthrottlingelement．Sowecancalculatetheflowflowmeterbasedondynamicthrottlingelement．Theratebydetectingthedrivingforce．Becausethepres．corecomponentoftheflowmeterisaventuritubewithsuredropisprodu

7、cedbythedynamicthrottlingele．twometaldiaphragms．Averyimportantparameterment．thekeypointistoanalyzehowthedynamicwhichaffectstheperformanceofthenewflowmeteristhrottlingelementaffectsthepressuredrop．thepressuredropbetweeninletpressureandoutletpressure，sowefocusonthethrott

8、lingperformanceofventuritube．WiththehelpofFluentsoftwarePwean-，alyzetheparameterswhichaffectthepressuredrop，andobtain