硅鋼步進(jìn)梁式加熱爐速度控制系統(tǒng)研究.pdf

1、分類號UDC密級777691武漢科技大學(xué)碩士學(xué)位論文硅鋼步進(jìn)梁式加熱爐速度控制系統(tǒng)研究TheResearchonVelocityControlSystemofWalkingbeam—typeReheatingFurnaceinSiliconSteel李芳指導(dǎo)教師姓名：申請學(xué)位級別：論文定稿日期；學(xué)位授予單位：學(xué)位授予日期：曾良才教授武漢科技大學(xué)機(jī)械自動化學(xué)院流體傳動及控制研究所答辯委員會主席：湛從昌教授評閱人胡誠高工湛從昌教授武漢科技大

2、學(xué)碩士學(xué)位論文第1I頁AbstractNowwalkingbeam—typereheatingfumaceiswidelyusedinhotreductionofboard，barsandwirestockIttransportshotorcoldbilletsteelstepbystepinfumaceandheatitBecausethehydraulicsystemofwalkingfumacemovesinprogramloop

3、andthewalkingfurnacehavethecharacteristicsasfollows：lowstepwalkingperiodicityhighvelocityheavyoverpassloading，synchronizingmulticylindercontinuouslywork，highreliabilityWeconsideroftheprocessrequirementsofwalkingfurnace，t

4、herefore，itneedstodesignthevelocitycontrolsystemofwalkingbeamtypereheatingfurnaceAccordingtothenakedproblemsinpracticableproductionprocessoftheNo4walking—beam—typereheatingfurnacehydraulicsysteminhotrollingplantWuHanIron

5、＆Steel(Group)Corp，thepaperanalyzesthedesigningideaandtechnicalmeasuresofrebuildinghydraulicsystem，makescertainofreliablereformschemeinrealityItupgradesmainpump，slippagesystem，valvestation，redesignsystemcircuittOadapttomo

6、demproduction，increasesoutputandqualityReferringtowalkingbeam—typereheatingfurnace’Svelocityfeature，consultingthevelocitycontrolmodeswhichhavebeenputintoproductioninhomeandoverseas，combiningthepracticalproductionconditio

7、nandworkrequirements，onthebaseofanalyzingandcomparingallkindsofcontrolmodes’meritsandfaults，thepapermakescertainofthevelocitycontrolversionwhichadaptstOthesystemItiscapacityspeedgoverningcircuitofpumpcontrollingcylinderI

8、nordertoensurewalkingbeamraninpresetratecurve，toavoidhappeningsomeaccidentsinsystem，forexample，thebiginertiawillresultintheaheadimpactingofwalkingbeam，thesystemusesadvancedelectrohydrauliccontroltechnologyInthewalkingbea

9、m’Svelocityelectro—hydrauliccontrolsystem，proportionalvariablepumpisthekeycomponentsItdependsOilthecontrolsignalwhichgivenbyelectricitycontrolsystemtodriveproportionaldirectionalvalveandcontrolthevariablepumpsvariablepis

10、tonmovedtelevantpositionafterpoweramplificationbyproportionalamplifierThemainpumpdischargesflowwhichneededtOoperatethewholesystemAtthesametime，thepump’Sslopingcamplateangleismeasuredandtranslatedintoelectronicsignalofclo

11、sedloopcontr01TheflowcontrolaccuracyishighInthisvelocitycontrolsystem，itmakesfulluseofthemeritsofelectro—hydraulicproportionalcontrol，replacesaxialpluagervariablepumpcontrolledbyfourgradepressurevalveblockwithhighperform

12、anceelectro—hydraulicproportionalvariablepumpThecontrolmethodchangesfrommechanicalhydraulicSeIVOcontrollingtoelectricitycontr01Itsimplifieshydraulicsystemandflowcontrolsystem，reducesfault，realizeswhollystandardizationofs