ControlofMain

Compressor主壓縮機控制Speaker：WangXiuqing

ZhengzhouRailwayVocational&TechnicalCollege主講人：王秀清鄭州鐵路職業技術學院Intheredbox，theyellowunitisthemaincompressorunitofHXD3electriclocomotive,whichprovidesallthecompressedairneededbytheelectriclocomotiveafteritstarts.紅色方框內，黃色機組即HXD3型電力機車的主壓縮機組，在電力機車起動蟻后，為電力機車提供全車需要的所有壓縮空氣。Inthefigure

如圖所示Theredboxshowsthemainaircylinderofelectriclocomotive,inwhichallthecompressedairproducedbythemaincompressorisstored.紅色方框內，為電力機車的總風缸，主壓縮機產生的所有壓縮空氣都儲存在總風缸里。maincompressor主壓縮機mainaircylinder總風缸Inthefigure

如圖所示showsthefullstructureofthemaincompressor,

inwhichthebluemotorintheredboxisthemotorofthemaincompressor.Today,wewillexplainhowtocontrolthemotorofthemaincompressor.紅色方框內的藍色電機，就是主壓縮機的電機，我們今天講解的就是主壓縮機的電機如何控制。fullstructureofthemaincompressor主壓縮機結構圖Inthefigure

如圖所示ThemotorAirfilterfilterThecompressorElasticmountingseatOildischargevalveCompressedairoutletTheradiatorOillevelobservationintersectionTheoilfilterElectricalcontrolboxmaincompressor主壓縮機mainaircylinder總風缸Theintermittentmodeisthe

conventionalmode

ofoperationofthecompressor為壓縮機的常規運行模式Theaircompressorworksintwomodes,intermittentandcontinuous,andthecompressormodecanbeselectedbyenteringthefunctionselectioninterfaceundertheservicemodeviathemicrocomputerdisplay.空氣壓縮機的工作方式分為間歇式和連續式兩種模式，通過微機顯示屏進入檢修模式下的功能選擇界面，可進行壓縮機模式選擇。intermittentmode間歇式maincompressor主壓縮機mainaircylinder總風缸Whenthecompressorisrunningatnoloadonlytheinternalcirculationtakesplaceandnomoreairissuppliedtothemainaircylinder壓縮機空載運行時只進行內部循環，不再向總風缸進行供風。Ismainlytopreventtheoccurrenceofproblemssuchasoilemulsificationofthecompressorandfrequentstartingofthecompressor,onthebasisoftheintermittentmodeofoperation,thecompressorisaddedtotheno-loadoperationfunction.主要是為了防止壓縮機機油乳化、壓縮機頻繁啟動等問題的發生，在間歇運行模式的基礎上，增加壓縮機的空載運行功能。Continuous

連續式ThecompressorautomaticswitchesQA19andQA20壓縮機自動開關AQA19、20usedforfaultprotectionoftheaircompressor.用于空氣壓縮機的故障保護。CompressorUniqueStarttheelectromagneticcontactorThecompressorWhentheautomaticswitchoftheaircompressoristurnedoff,turnoffthepowersupplycircuitofthecorrespondingaircompressor,sendthefaultsignaltothedriver'sfaultdisplaylampthroughTCMS,andturnoffthecoilbranchofthecontrolcontactorofthecorrespondingaircompressor,sothatthecontactorcannotbeclosedbyelectricity.當空氣壓縮機自動開關斷開后，斷開對應空氣壓縮機的供電電路，并將故障信號通過TCMS送到司機故障顯示燈，同時斷開對應空氣壓縮機的控制接觸器線圈支路，使該接觸器不能得電閉合。

ThecompressorautomaticswitchesQA19andQA20壓縮機自動開關AQA19、20CompressorUniqueStarttheelectromagneticcontactorThecompressorWhenthemaincompressoradoptsintermittentworkingmode,KM13andKM14areautomaticallycontrolledbythemicrocomputercontrolsystemaccordingtothewindpressureofthemainaircylinder.當主壓縮機采用間歇式工作方式時，KM13、KM14由微機控制系統根據總風缸的風壓，自動控制。KM13andKM14ofthecompressorelectromagneticcontactors壓縮機電磁接觸器KM13、KM14CompressorUniqueStarttheelectromagneticcontactorThecompressorTurnonthe"MainCompressor"position,Line519willbeenergized,andthecompressorwillbeputintooperationaccordingtothestateofthetotalairpressureswitchesKP51-1andKP51-2打“主壓縮機”位，519號線得電，壓縮機根據總風壓力開關KP51-1和KP51-2的狀態投入工作ThetoggleswitchofthemaincompressorSB45為主壓縮機的扳鍵開關ThetoggleswitchofthemaincompressorSB45為主壓縮機的扳鍵開關Whenthe"StrongPumpAir"positionisset,Line518willbeenergized,forcingthetwocompressorsofthefirstcartobeputintooperation,andthemaincompressorofthesupplementarymachinetobeputintooperation打“強泵風”位，518號線得電，強制頭車兩臺壓縮機投入工作，補機主壓縮機投入工作ThetoggleswitchofthemaincompressorSB45為主壓縮機的扳鍵開關Thearrowinthefigureindicatesthatthekeyswitchofthemaincompressorhasaself-compoundpumpairposition.圖中的箭頭表示主壓縮機扳鍵開關強泵風位為自復式的Inthefigure如圖所示ThepressuresensorsKP51-1andKP51-2ofHXD3electriclocomotiveareusedtomeasurethewindpressureofthemainaircylinder.HXD3型電力機車用壓力傳感器KP51-1、KP51-2測量總風缸的風壓Isturnedonwhenthewindpressureislowerthan750kPaandturnedoffwhenthewindpressureishigherthan900kPa;風壓低于750

kPa時閉合，風壓高于900

kPa時斷開KP51-1Isturnedonwhenthewindpressureislowerthan825kPa,andturnedoffwhenthewindpressureishigherthan900kPa.風壓低于825

kPa時閉合，風壓高于900

kPa時斷開KP51-2Inthefigure如圖所示Airpressureofthemainaircylinder＜750kPa總風缸風壓＜750kPaTherearethreestatesforthecontrolof

maincompressorelectromagneticcontactorsKM13and

KM14:主壓縮機電磁接觸器KM13、KM14的控制，有三個狀態：thetwocompressorsarestarted,KM13andKM14areenergized,thenormallyopenchainisclosed,andthelines461and462areenergized.兩臺壓縮機起動，KM13、KM14都得電，常開連鎖均閉合，461、462號線都得電750kPa＜Airpressureofthemainaircylinder＜825kPa750kPa＜總風缸風壓＜825kPaOnecompressorstarts,oneKM13andKM14isenergized,andtheotherKM14isnormallyclosed.ThedriverisintheI-endcab,461isenergized,andthedriverisintheII-endcab,462isenergized.一臺壓縮機起動，KM13、KM14一個得電，一個常開連鎖閉合，司機在I端司機室，461得電，司機在II端司機室，462得電。Therearethreestatesforthecontrolof

maincompressorelectromagneticcontactorsKM13and

KM14:主壓縮機電磁接觸器KM13、KM14的控制，有三個狀態：Airpressureofthemainaircylinder＞825kPa總風缸風壓＞825kPaneitherofthetwocompressorswillstart,neitherKM13norKM14willbepoweredoff,thenormallyopenchainwillbeclosed,andbothlines461and462willbeenergized.兩臺壓縮機都不起動，KM13、KM14都不得電，常開連鎖均閉合，461、462號線都得電Therearethreestatesforthecontrolof

maincompressorele