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1、£用滋£了說(shuō)HenanUniversityofUrbanConstruction畢業(yè)設(shè)計(jì)[論文]題目:原煤倉(cāng)料位檢測(cè)控制系統(tǒng)學(xué)院:電氣與信息工程學(xué)院專(zhuān)業(yè):電氣工程及其自動(dòng)化姓名:郭玉會(huì)學(xué)號(hào):091409119指導(dǎo)老師:王整風(fēng)完成時(shí)間:2013.5.29煤炭工業(yè)發(fā)展“十二五”規(guī)劃指出,煤炭是我國(guó)的主體能源,在一次能源結(jié)構(gòu)中占70%左右。在未來(lái)相當(dāng)長(zhǎng)時(shí)期內(nèi),煤炭作為主體能源的地位不會(huì)改變。隨著我國(guó)煤炭工業(yè)生產(chǎn)£1動(dòng)化程度的提高,煤炭工業(yè)技術(shù)裝備自動(dòng)化、信息化、可靠性程度顯著提高,但機(jī)械化程度與先進(jìn)產(chǎn)煤國(guó)仍有較大差距。國(guó)內(nèi)
2、大多數(shù)選煤廠的原煤倉(cāng)檢測(cè)控制系統(tǒng)主要由原煤傳送機(jī)、傳感器、原煤倉(cāng)等設(shè)備組成。原有的煤倉(cāng)檢測(cè)控制系統(tǒng)采用電氣控制裝置,測(cè)量精度低、控制分散、接線(xiàn)復(fù)朵、工作效率低。為了提高選煤廠儲(chǔ)煤效率和準(zhǔn)確檢測(cè)煤位高度的要求,儲(chǔ)煤倉(cāng)需要實(shí)時(shí)準(zhǔn)確地測(cè)量其煤位變化和控制儲(chǔ)煤量?,F(xiàn)在,國(guó)內(nèi)外工業(yè)生產(chǎn)過(guò)程屮最常用的控制器就是可編程控制器(PLC),利用其開(kāi)關(guān)量和模擬量的功能模塊提高控制精度。本設(shè)計(jì)還利用控制步進(jìn)電機(jī)的脈沖數(shù)以實(shí)現(xiàn)精確配煤的目的。關(guān)鍵詞:原煤倉(cāng),PLC控制,配煤,超聲波傳感器,步進(jìn)電機(jī)ABSTRACTThedevelopment
3、ofcoalindustryofthe"12thFive-YearPlan^pointedoutthat,coalisChina'smainenergyaccountedforabout70%inprimaryenergymix.Coalasthemainenergystatusinthefutureforalongperiodoftimewillnotchange?WiththeimprovementofproductionandthedegreeofautomationinChina'scoalindustry,
4、coalindustrytechnologyandequipmentautomation,informationtechnology,andlevelofreliabilitywassignificantlyimproved,butthereisstillalargegapinthedegreeofmechanizationwiththeadvancedcoal-producingcountries.Detectionandcontrolofmostdomesticcoalpreparationplantcoalst
5、oragesystemismainlycomposedofrawcoalconveyors,sensors,coalstorageandotherequipment.Theoriginalcoalbunkermeasurementandcontrolsystemofelectricalcontrolequipment,measurementaccuracyislow,decentralizedcontrol,wiringcomplexityandlowefficiency.Inordertoachievethehei
6、ghtefficiencyofthecoalpreparationinaplantcoalstorageandreal-timedetectionofcoal-bitrequests,coalstorehouserequirereal-timeaccuratelydetectthechangesinthecoal七itandcontroltheamountofcoalstorage.Now,themostcommonlyusedcontrollerinindustrialproductionprocessesatho
7、meandabroadistheprogrammablelogiccontroller(PLC),theuseofswitchingandanalogfunctionmodulestoimprovecontrolaccuracy.Thisdesignisalsothenumberofpulsestocontrolthesteppermotorinordertoachievethepurposeofpreciseblending.Keywords:rawcoalwarehouse,PLCcontrol,blending
8、,ultrasonicsensors,steppermotor目錄摘要IABSTRACTII1緒論11」本設(shè)計(jì)的來(lái)源和背呆11.2本設(shè)計(jì)研究的
9、=
10、的與意義11.3本設(shè)計(jì)的任務(wù)和基本要求21.3.1本設(shè)計(jì)的主要任務(wù)21.3.2本設(shè)計(jì)的基本要求22原煤倉(cāng)料位檢測(cè)控制系統(tǒng)總體設(shè)計(jì)32.1總體方案32.1.1方案一32.1.2方案二32.2方案的選擇