pumps and its types-ppt

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General discussion on pumps and it types with animated working examples.

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pumps and its types-ppt

  1. 1. PumP classification Hydrodynamic (or) non-positive displacement pumps Hydrostatic (or) positive displacement pumps
  2. 2. Carries fluid from one location to another, relatively at low pressure (17-21 bar). Generally used for low pressure, high-volume, flow applications. These pumps are not self-priming, as there is a great deal of clearance between the rotating and stationary elements. Cannot create enough vacuum at its inlet, hence discharge rate is low. Examples….. a) Centrifugal pumps b) Axial flow propeller pump. These pumps are called as non-positive displacement pumps. HYDRoDYnamic PumPs
  3. 3. HYDRostatic PumPs Hydrostatic pumps uses fluid pressure to transmit power. These pumps have very close-fitting mating components and hence a very small amount of leakage could occur. These pumps may be either….. a) Fixed displacement b) Variable displacement These pumps requires protection against over pressure if the resistance to flow becomes very large or infinite, so pressure relief valve is provided. It is also called as positive displacement pumps.
  4. 4. classification of PDP GEAR PUMPS VANE PUMPS PISTON PUMPS
  5. 5. EXtERnal GEaR PumP
  6. 6. Common external gear pump applications include, but are not limited to: Various fuel oils and lube oils Chemical additive and polymer metering Chemical mixing and blending (double pump) Industrial and mobile hydraulic applications (log splitters, lifts, etc.) Acids and caustic (stainless steel or composite construction) Low volume transfer or application aPPlication
  7. 7. INTERNAL GEAR PUMP
  8. 8. Common internal gear pump applications include, but are not limited to: All varieties of fuel oil and lube oil Resins and Polymers Alcohols and solvents Asphalt, Bitumen, and Tar Polyurethane foam (Isocyanate and polyol) Food products such as corn syrup, chocolate, and peanut butter Paint, inks, and pigments Soaps and surfactants Glycol APPLICATION
  9. 9. LOBE PUMP
  10. 10. Common rotary lobe pump applications include, but are not limited to: Polymers Paper coatings Soaps and surfactants Paints and dyes Rubber and adhesives Pharmaceuticals Food applications APPLICATION
  11. 11. GEROTOR PUMP
  12. 12. SCREW PUMP
  13. 13. PD pumps are found in a wide range of application chemical-processing liquid delivery marine biotechnology  pharmaceutical as well as food, dairy, and beverage processing. Their versatility and popularity is due in part to their relatively compact design, high-viscosity performance, continuous flow regardless of differential pressure, and ability to handle high differential pressure. APPLICATIONS OF PDP
  14. 14. VANE PUMPS
  15. 15. Aerosol and Propellants Aviation Service - Fuel Transfer, Deicing Auto Industry - Fuels, Lubes, Refrigeration Coolants Bulk Transfer of LPG and NH3 LPG Cylinder Filling Alcohols Refrigeration - Freons, Ammonia Solvents Aqueous solutions APPLICATION
  16. 16. AXIAL PISTON PUMP
  17. 17. RADIAL PISTON PUMP
  18. 18. CENTRIfUgAL PUMP
  19. 19. SubmerSible pump
  20. 20. NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT PUMPS provide a smooth, continuous flow pulse with each stroke or each time a pumping chamber opens to an outlet port. Pressure can reduce a non positive pump's delivery. High outlet pressure can stop any output; the liquid simply recirculates inside the pump In a positive-displacement pump, pressure affects the output only to the extent that it increases internal leakage It is not self priming It is a self-priming CHArACTeriSTiCS OF pumpS
  21. 21. perFOrmANCe OF pump  Pumps are usually rated according to their volumetric output and pressure.  Volumetric output (delivery rate or capacity) is the amount of liquid that a pump can deliver at its outlet port per unit of time at a given drive speed, usually expressed in GPM or cubic inches per minute.  Pumps are sometimes rated according to displacement, that is the amount of liquid that they can deliver per cycle or cubic inches per revolution.  As pressure increases, volumetric output decreases.  This drop in output is caused by an increase in internal leakage (slippage) from a pump's outlet side to its inlet side  Slippage is a measure of a pump's efficiency and usually is expressed in percent.
  22. 22. pump eFFiCieNCieS Volumetric Efficiency: η = Actual flow rate = Qa Theoretical flow rate Qt Gear pumps = 80-90 % Vane pumps = 82-92 % Piston pumps = 90-98 % Mechanical Efficiency: η = Output power = Po Input power Pi Mechanical efficiency varies from 90 to 95 % Overall Efficiency: η = Actual power delivered by the pump = Hydraulic power Actual power delivered to the pump Brake power
  23. 23. reFFreNCe 1. WWW.PUMPSSCHOOL.COM 2. APPLIED HYDRAULICS AND PNEUMATICS By T.Sunder Selwyn, R.Jayendiran 3. www.authorstreem.com.

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