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Introduction to Hydraulic Machinary

Learning about machines that transfer energy between its operating parts and a fluid.

Examples:

Classification

Based on energy transfer direction

Machine to Fluid

Examples:

  • Pumps (for liquids)
  • Blowers, Compressors (for gases)

Fluid to Machine

Examples:

  • Fluid motors
  • Turbines

Fluid only as a energy transfer medium

Examples:

  • Hydraulic Jack

Based on principle of operation

Positive displacement

Fluid taken into an enclosed space and forced out by repeated mechanical action.

Examples:

  • Piston pump
  • Rotary pump

Rotodynamic

Main component is a rotating element. It rotates inside a fluid. Rotating element’s kinetic energy is transferred to fluid when the fluid flwos through it.

MachineMain rotating element
PumpsImpeller
TurbinesRunner
Fans/BlowersRotor

Summary

Machine to FluidFluid to MachineFluid as a energy transfer medium
Positive DisplacementPiston pump, Rotary pumpMotorsHydraulic Ram, Jack Press
RotodynamicPumps, CompressorsTurbinesHydraulic coupling, Torque converter