【液压培训资料】EATON 伊顿液压闭式系统操作原理讲解

1、Many Players, One TeamClosed Circuit Principle of Operation 0740A & 0740BInstructor Rod EricksonOctober 2nd & 3rd, 2007Gaylord Palms Resort & Convention Center, Kissimmee, Florida Variable Pump & Fixed MotorCASE DRAINReservoir, Application GuidelinesFiller Cap May be Sealed or Breather TypeReturn an

2、d Outlet Line Must be Located Below Fluid LevelShould include Baffle to Separate Inlet, Outlet FluidMinimum Reservoir Size Should Not be Less Than 60% of the Maximum Charge Pump SizeReservoirReturn LineFilter CapBaffleOutlet LineRESERVOIRHeat Exchanger Application GuidelinesA. Heat Exchanger size mu

3、st be capable of Dissipating Approximately 25% of the Maximum Input HorsepowerB. Must include a By Pass Valve to Limit Possible Excessive Case Pressure as Sometimes Experienced During Cold Starts (Case Pressure not to Exceed 40 PSIHeat ExchangerBy-Pass ValveHEAT EXCHANGERRESERVOIR & COOLERCHARGE PUM

4、P & CHECK VALVESCHARGE PUMP Relieve to CaseCHARGE PUMP Re-CirculatingInlet Filter Application Guidelines10 Micron Filter Without By-Pass (Indicator) (Must Maintain A ISO 18/13 Cleanliness Level)Minimum Filter Size Should Equal Four Times Maximum Charge Pump FlowInlet Vacuum Should Not Exceed 10 in.

5、Hg (During Normal Operating Temp)FILTER Inlet (Suction Side)FILTER Pressure Side (Heavy Duty Series One & Two)FILTER Remote Filter Ports (Heavy Duty Series One & Two)FILTER Pressure Side Full Flow (Medium Duty 72400)FILTER Pressure Side Partial Flow (Medium Duty 72400)Feedback linkMANUAL CONTROLLERM

6、echanical ServoFollower Servo MechanismFollower Servo MechanismFollower Servo MechanismFollower Servo MechanismFollower Servo MechanismFollower Servo MechanismFollower Servo MechanismFollower Servo MechanismFollower Servo MechanismTypical ApplicationTypical ApplicationTypical ConstructionTypical Con

7、structionOperationOperationOperationOperationMANUAL CONTROLLERRelief ValvesRelief Valve Settings are Dictated by ApplicationCROSS PORT RELIEF VALVESINTERNAL PRESSURE OVERRIDE Series Two Heavy DutyINTERNAL PRESSURE OVERRIDE Series one Heavy DutyINTEGRAL SHUTTLE VALVECIRCUIT OPERATIONCIRCUIT OPERATION- 72400hot oil shuttlex-linerelief valvesPump chargeRelief valveMotor charge relief valve