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Confidential | © 2017 by Epiroc. All rights reserved.
1
Important Properties
• “Shapelessness”
– Liquids have no neutral form
– Conform to shape of container
– Easily transferred through piping from one location to another
• Incompressibility
– Liquids are essentially incompressible
– Once force is removed, liquid returns to original volume (no permanent
distortion)
• Transmission of Force
– Force is transmitted equally & undiminished
in every direction -> vessel filled with pressure
Confidential | © 2017 by Epiroc. All rights reserved.
2
Hydraulic Theory
Pascal’s Law
States that pressure exerted anywhere in a confined incompressible fluid
is transmitted equally in all directions throughout the fluid such that the
pressure variations (initial differences) remain the same (F = P*A)
Pressure = Force/Area
Liquid properties enable large objects (rudder, planes, etc) to be
moved smoothly
Confidential | © 2017 by Epiroc. All rights reserved.
3
HYDRAULIC SYMBOLS
Confidential | © 2017 by Epiroc. All rights reserved.
Hydraulic symbols
4
Confidential | © 2017 by Epiroc. All rights reserved.
5
System
2. Hydraulic advantages

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Important Properties and Principles of Hydraulic Systems

  • 1. Confidential | © 2017 by Epiroc. All rights reserved. 1 Important Properties • “Shapelessness” – Liquids have no neutral form – Conform to shape of container – Easily transferred through piping from one location to another • Incompressibility – Liquids are essentially incompressible – Once force is removed, liquid returns to original volume (no permanent distortion) • Transmission of Force – Force is transmitted equally & undiminished in every direction -> vessel filled with pressure
  • 2. Confidential | © 2017 by Epiroc. All rights reserved. 2 Hydraulic Theory Pascal’s Law States that pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions throughout the fluid such that the pressure variations (initial differences) remain the same (F = P*A) Pressure = Force/Area Liquid properties enable large objects (rudder, planes, etc) to be moved smoothly
  • 3. Confidential | © 2017 by Epiroc. All rights reserved. 3 HYDRAULIC SYMBOLS
  • 4. Confidential | © 2017 by Epiroc. All rights reserved. Hydraulic symbols 4
  • 5. Confidential | © 2017 by Epiroc. All rights reserved. 5 System 2. Hydraulic advantages