logging in or signing up Hydraulic Pumps mishra0246 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 2740 Category: Entertainment License: All Rights Reserved Like it (2) Dislike it (0) Added: January 28, 2011 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Hydraulic Pumps : Hydraulic Pumps Types & how they work Performance curves Presented By :- Shashank Mehta Types : Types Non-Positive Displacement Fans Fluid couplers Positive Displacement Gear Vane* Piston* * Can be variable displacement, including pressure compensated and load sensing. Slide 5: Impeller Mechanism Pump Slide 6: Peristaltic Pump Slide 7: Diaphragm Pump Slide 8: Gear Pump Slide 9: Gear Pump Balanced Slide 10: Vane Pump Slide 11: Piston Pump Slide 12: Bent Axis Piston Pump Slide 13: Swash Plate Piston Pump Inefficiency : Inefficiency Leakage: you get less flow from a pump than simple theory suggests. Increases with larger pressure difference Friction: it takes some torque to turn a pump even if there is no pressure rise Is more of a factor at low pressures Slide 15: Speed Flow Qgpm = Dcu in/rev Nrpm /231 Slide 16: Pressure Rise Torque Required Tinlb = Dcu in/rev ∆Ppsi /(2π) Efficiency : Efficiency Em – mechanical efficiency < 1 due to friction, flow resistance Ev – volumetric efficiency < 1 due to leakage Eo =overall efficiency = Em * Ev Eo = Power out/power in References : References http://www.free-ed.net/free-ed/MechTech/hydraulics01/default.asp gear, vane, piston http://hydraulicspneumatics.com/200/FPE/IndexPage.aspx http://www.animatedsoftware.com/pumpglos/pumpglos.htm Impellar mechanism Peristaltic pump Diaphragm pump Gear pump Gear pump balanced Vane pump Piston pump Bent axis piston pump Swashplate pump http://home.wxs.nl/~brink494/frm_e.htm http://www.pumpschool.com/principles/external.htm http://www.pumpschool.com/principles/internal.htm You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.