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1、ThehydraulicpressessystemoftheformandtheevaluationThehydraulicpressesthecomponenttocarriedouttostandardizegradually,theseriesturn,itsspecification,species,quantity,functionsesallhadtoraiseverygreatly,particularlyistoadoptthenewcraftofnewtechniqueofelectronicstechnique,servotechni
2、que...etc.after,thehydraulicpressestheexaltationthatthequantityofthesystemgetstoshowthehighest,itdeveloppedtheimportantfunctioninnationaleconomyandthemilitaryindustries.Setoutfromthedifferentangle,canpressthesystemtotheliquidtobedividedintothedifferentform.1)Pressthecirculatingwa
3、yoftheoilliquid,theliquidpressthesystemandcanisdividedintotheopentypesystemandshuttypesystems.Theopentypesystemmeanthattheliquidpressesthepumptoabsorbtheoilfromthefueltank,theoilisthroughvariouscontrolvalve,drivingtheliquidtopresstocarryoutthecomponent,returningtooiltohasbeenchan
4、gedtoreturntofueltanktowardvalveagain.Thiskindofsystemstructureismoresimple,candevelopthefueltanktospreadhot,precipitatethemiscellaneousqualityfunction,butoftengetintouchwithwithairbecauseoftheoilliquid,makeairbeeasytoseepintothesystem,causingtheorganizationexercisethegravamenste
5、adyetc.result.Theopentypesystemfueltankisbig,oilpumpfromabsorbthefunctionandlike.Intheshuttypesystem,theliquidpressesthepumpofintopipelinedirectlywithperformancethecomponentreturntopipelineconnectwitheachother,worktheliquidcarriesonclosingthecirculationinthetuberoadofthesystem.It
6、sstructuretightlypacked,withtheairopportunitytogetintouchwithlittle,noteasyinfiltrationsystemofair,sospreadtomovemoresteady.Theworkorganizationbecomesoonandchangetodependtoregulatethepumpormotorstochangetomeasuretheorganizationrealization,avoidedtheopentypesystemchangetowardproce
7、ssappearofliquidpresstheimpactandenergylosses.Buttheshuttypesystemmoretheopentypesystemcomplications,becauseofhavingnofueltank,theoilliquidspreadhotandfiltertheconditionisworse.Inordertocompensatetheleakinessinthesystem,usuallyneedasmalldischargetorepairtheoilpumpandfueltanks.Bec
8、ausetheoilasizeofafunctionofhighbardisch