hydraulic pumps design and selection presentation
- 1. A PRESENTATION ON HYDRAULIC PUMP:DESIGN AND SELECTION B.Tech (Agril. Engg.) Presentation By Aarushi Chandrakar Student ID - 20203293 Course Code – EFM-5424 BHARTIYA COLLEGE OFAGRICULTURAL ENGINEERING, DURG,C.G. AFFILATED TO- INDIRA GANDHI KRISHIVISHWAVIDYALAYA, RAIPUR,C.G.
- 2. HYDRAULIC PUMP • Hydraulic pumps are the devices which converts the mechanical energy into hydraulic energy. • Mechanical rotations are provided to the pump with the help of an electric motor , which creates a partial vacuum in the inlet of the pump and allows the fluid into the pump through inlet pipe . • The entered fluid is being pushed by the pump into the various components of hydraulic system or machine.
- 3. SELECTION OF HYDRAULIC PUMP • The selection of hydraulic pump depends on following parameters- 1. Based on Types. 2. Based on Factors.
- 4. BASED ON TYPES Hydraulic Pump Vane Pump Gear Pump Axial Piston
- 5. GEAR PUMP • In gear pumps it is the meshing of the gears pushing against the pump housing wall, in piston pumps it is the piston pushing in the piston silo against a valve plate. • Gear pumps are the most commonly used hydraulic pumps. • They are less mechanically complicated and are cheaper to manufacture. Gear pump housings come in a variety of materials from cast aluminum to 316 L stainless steel.
- 6. VANE PUMP • One great advantage of a vane pump provides is that it runs quieter than either gear pumps or piston pumps. • Also, vane pumps exceed gear pumps in pressures up to ≤ 4000 psi. • Of the three pump types vane pumps tend to be the most dirt sensitive. • For some mobile applications where noise is an application consideration vane pumps are making a resurgence in use.
- 7. AXIAL PISTON • These pumps are capable of routinely achieving continuous running pressures > 5000 psi (345 bar). • Some units are now approaching 7500 psi (520 bar). The higher pressures, speeds and absence of large reservoirs are a weight saving strategy. • These systems run at slower speeds and pressures from 1500 to 2000 psi.
- 8. BASED ON FACTORS • The factors which are considered for pump selection are: 1. Capacity. 2. Pressure 3. Driving Speed. 4. Efficiency. 5. Fluid Type. 6. Pump Placement.
- 9. PUMP DESIGN • Pumps convert mechanical power to fluid power. • Hydraulic pumps which are mainly used are gear type, roller vane type or axial piston variable flow type. • The pressures developed by three main types of hydraulic pumps are as follows: • 1. Fixed gear/vane pump : Pressure up to 10.3 MPa • 2. Pressure balanced gear/vane pump : 13.8-24.1 MPa • 3. Pinion type pump : 27.6-34.5 MPa The common speed of operation of pumps ranges from 3000 to 5000 rpm.
- 10. FLUID POWER OF PUMP
- 11. SHAFT POWER OF PUMP
- 12. PUMP TORQUE
- 13. INPUT OR SHAFT POWER
- 14. HYDRAULIC POWER OF PUMP
- 15. OVERALL EFFICIENCY OF PUMP