More Related Content Similar to Choix D'une Pompe Similar to Choix D'une Pompe (20) More from youri59490 (20) Choix D'une Pompe1. CHOIX D’UNE POMPE Copyright Eaton Hydraulics 2000 Steve Skinner, Eaton Hydraulics, Havant, UK 3. FLOW SIZE & DRIVE SPEED PUMP FLOW RATE America - 1200 / 1800 RPM Mobile - 1200 2500 RPM FLOW Europe - 1000 / 1500 RPM 10. volume cm 3 SIZE (displacement) = cm 3 / rev PUMP DISPLACEMENT 1 revolution 11. FLOW = DISPLACEMENT x SPEED PUMP FLOW RATE CALCULATION SPEED = rev / min litres / min = cm 3 / rev x rev / min 1000 FLOW = litres / min DISPLACEMENT = cm 3 / rev 14. PUMP PRESSURE CAPABILITY CONTINUOUS INTERMITTENT PEAK P MAX TYPICALLY: INTERMITTENT = 6 sec / min PEAK = 50 mS P MAX t 24. DRIVE SPEED - INDUSTRIAL APPLICATIONS 1200 RPM 60 Hz 1800 RPM 1000 RPM 50 Hz 1500 RPM Q N N Q 28. NOISE LEVEL FACTORS AFFECTING PUMP NOISE LEVEL DISPLACEMENT DRIVE SPEED INT. GEAR VANE PISTON EXT. GEAR TYPE FIXED VARIABLE CONSTRUCTION PRESSURE 30. 20/18 19/17 18/16 17/15 16/14 100 200 300 ISO CLEANLINESS LEVEL PRESSURE (bar) PUMP CLEANLINESS REQUIREMENTS VARIABLE PISTON FIXED VANE / GEAR VARIABLE VANE / FIXED PISTON 32. POWER SUPPLY CONTROL ACTUATOR MECHANICAL POWER IN MECHANICAL POWER OUT HYDRAULIC POWER HYDRAULIC POWER AVAILABLE POWER PUMP EFFICIENCY vs SYSTEM EFFICIENCY PIPE LOSSES POWER SUPPLY LOSSES CONTROL LOSSES ACTUATOR LOSSES PUMP LOSSES INPUT OUTPUT HEAT 36. 0 10 20 30 40 50 60 70 80 90 100 50 100 150 200 250 300 350 bar Efficiency TYPICAL PUMP OVERALL EFFICIENCY 41. EFFICIENCY TIME PUMP LIFE MINIMUM GEAR VANE PISTON GEAR PUMP LIFE VANE PUMP LIFE PISTON PUMP LIFE 68. COMPARATIVE SIZES OF 100 cm 3 /r PUMPS FIXED DISPLACEMENT VARIABLE DISPLACEMENT GEAR PISTON VANE 69. COMPARATIVE WEIGHTS OF 100 cm 3 /r PUMPS FIXED DISPLACEMENT VARIABLE DISPLACEMENT GEAR PISTON VANE 13 kg 55 kg 33 kg 45 kg 34 kg 73. 0 50 100 150 200 250 300 350 DISPLACEMENT ( cm 3 / r ) PRICE PUMP COST COMPARISON EXTERNAL GEAR FIXED VANE VARIABLE VANE INTERNAL GEAR VARIABLE PISTON