液压系统污染控制-EATON学习资料.ppt

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1、液压系统污染控制-EATON基本液压系统SPOOLDIRECTIONALVALVE换向阀阀芯5µmSPOOLCLEARANCE阀芯公差5µmSPOOLCLEARANCE阀芯公差METERINGEDGES节流棱边METERINGEDGES节流棱边PISTONPUMP柱塞泵PISTON&BORE柱塞与缸体孔PISTON&BORE柱塞与缸体孔PISTON&BORE柱塞与缸体孔PISTON&BORE柱塞与缸体孔Between70and90%ofallhydraulicsystemfailuresarecausedbypoorfluidconditionHYDRAULIC

2、FAILURES液压系统故障约70到90%的液压系统故障是由于液压油的污染造成的TYPICALCONTAMINATIONDAMAGE典型的污染损坏HYDRAULICCIRCUIT基本液压系统IN-BUILTDIRT内部污物DIRTFROMNEWOIL新油带来的污染物DIRTINGRESSTHROUGHMAINTENANCE由于系统维护带来的污物DIRTINGRESSTHROUGHMAINTENANCE由于系统维护带来的污物由于油缸活塞杆带来的污物SYSTEMGENERATEDDIRT系统本身的污物（气蚀、磨损）CLEANDIRTYREQUIREDLEVELACT

3、UALLEVELCLEANLINESSLEVELS液压油清洁度等级FLUIDSAMPLING液压油取样1micron(m)=0.000001metre=0.001millimetreCONTAMINATIONMEASUREMENT污物测量þ1020304050607080901000ýPOLLENGRAINOFSALTmicrons.CONTAMINATIONVISIBILITY污染物可视度HUMANHAIRCONTAMINATIONCOUNTING污染物计数>2m>5m>15mCONTAMINATIONCLASSIFICATION污染物等级Target

4、ProThesamplecylindercontainssomefluid.PressFLUSHtodrainCO2PARTICLECOUNTER颗粒计数器TargetProThesamplecylindercontainssomefluid.PressFLUSHtodrainCO2sfjdslj;djgdjg0ad[g[jgi]0dig]0d9ig0d0g00dg099d=09]090ae900gi0]0d9]09]ierwEPO]D0009099EUGE00E9JKO00909iiidsjrPARTICLECOUNTER颗粒计数器>2m>5m>15mE

5、xample:3250860122permlVICKERSTARGET-PROSample:MACHINE1Date:8.1.99SampleVol:30mlFlowrate:50-25ml/minReportedvalues:COUNTS/mlISO:22/17/13NAS:8MINMAXAVG2m3214328532505m83288786015m11912412225m712950m010100m000CONTAMINATIONREPORT污染物报告Particles/1ml0.020.040.080.160.320.641.32.551020

6、40801603206401300250050001000012345678910111213141516171819200.013250122860ISO4406Code19/17/14ISOCLEANLINESSCODEISO清洁度代码RangeCodeCOMPONENTCLEANLINESS液压元件使用油液的清洁度等级美国NAS1638污染等级（100mL油液中的颗粒数）Nas与ISO清洁度等级对照表COMPONENTCLEANLINESS液压元件使用油液的清洁度等级典型液压系统清洁度等级HYDRAULICFILTER过滤器HYDRAULICFILTER过

7、滤器滤芯截面HYDRAULICFILTERELEMENTBY-PASS旁通阀滤芯堵塞FILTERINDICATOR滤器指示器eg.4bar3bar报警FILTERINDICATOR滤器指示器FILTERINDICATOR滤器指示器FILTERINDICATOR滤器指示器AIRBREATHER空气过滤器AIRBREATHER空气过滤器AIRBREATHER空气过滤器AIRBREATHER空气过滤器AIRBREATHER空气过滤器AIRBREATHER空气过滤器AIRBREATHER空气过滤器IntroductionProductsPRO-ACTIVEMAINTEN

8、ANCEINLETFIL