[小学教育]parker负载敏感阀培训l90ls

《[小学教育]parker负载敏感阀培训l90ls》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、ConstantFlowOpenCentreSystem“CFO”SpoolinneutralActivatedspoolTypicalflowcharacteristicManuallycontroledvalve200bar200bar100bar50bar100bar50bar100%SpooltravelMax.PumpFlow“METEROUT”LOWERING“METERIN”LIFTINGSystemwithfixedpump200bar100bar50barSystemwithvariablepumpLoad-sensingsystem“LS”ClosedCen

2、treValveSpoolinmidpositionActivatedspoolTypicalflowcharacteristicManualcontrolledvalve100%SpooltravelMax.PumpFlow“METEROUT”LOWERING“METERIN”LYFTINGF1+pumpL90LSvalveConstantFlowClosedcentersystem“CFC”SystemwithfixedpumpandLSvalveTHREEFUNCTIONSWITHOUTINDIVIDUALPRESSURECOMPENSATORS5021021021021

3、010021020020021050100200210SystemwithfixedpumpandLSvalveINDIVIDUALCOMPENSATORWITHPRESSUREREDUCTIONFUNCTIONORFEEDREDUCTIONFUNCTIONPILOTSTAGEPRESSURECOMPENSATORTHREEFUNCTIONWITHINDIVIDUALPRESSURECOMPENSATORS50566BAR2106BAR2101061006BAR21020620020021050100200SystemwithfixedpumpandLSvalveSystems

4、withfixedpump”CFO”PpressureSystemswithvariablepump”LS”PpressureQflowQflowEnergycomparisoninsystemsGreatdemandsformanoeuvrabilityArialliftVerysuitablefor”LS”systemsApplicationswellsuitedfor”LS”GreatdemandsforproductivityForestmachineExcavatorBackhoeloaderHookloaderRefusecollectorLargewheelloa

5、derWhenpartialpumpflowisusedforindividualfunctionsAthighintensityusageTocreatesimplesystemsolutionswhenanumberoffunctionswithdifferentflowratesisdemandedWhensystemlayoutisspreadoutAtsimultaniousoperationoffunctionsPowercontrolandenergyconservationReduceenergylossesatidlingandtransportationSu

6、itablewhen;SystemwithvariablepumpandLSAvoidtomixlightandheavyloadsfromthesamepump.Avoidtomixlargeandsmallflowdemandsfromthesamefixedpump.Nevercontrolmaxflowwithlinemountedrestrictors.Alwaysusethepumpregulatortosetmaximumworkpressurewhenyouareusingavariablepump.Thepressurelimiterofthevalvenee

7、dstobesetatleast30barsabove.Avoidtolimitvalveworkportpressurewiththechockvalves,usethebuildinindividualworkportfeedreducer.Makesurethatthecylindersarecorrectlyconnectedtothevalve,thevalveisnormallyadaptedtothecylinderratio.Saveenergy,designadvisesL