Hydraulic beginner

HYDRAULIC

Understanding the basic of hydraulic

Aditya@poltekom.ac.id

Comparison

Pneumatic Electric

Cylinders Directional valve Logic valves Button valve Oil pump

Motors, linear motor Transistors/contactors Op amps Button / switch Battery

1 bar = 1x105 𝑁 𝑚2

1 𝑚𝑚2 = 1x10−6 𝑚2

Hydraulic fluid transmission Let : F = Force (N) P = Pressure (N/m2) A = Area (m2)

Hydraulic fluid compensation Let : S = Displacement(m) A = Area (m2)

HYDRAULIC SYSTEM

Power pack Directional control valve

Actuator

POWER PACK

Power element Actuators Directional control valves Flow control Pressure control Measuring unit

POWER PACK

Pump

POWER PACK

Pump

POWER PACK

Pump

WORKING ELEMENTS / ACTUATING DEVICES

Single / double acting cylinder

WORKING ELEMENTS / ACTUATING DEVICES

Single / double acting cylinder

SINGLE ACTING CYLINDER

Forcible surface

supply port

Pressurized chamber

DEpressurized chamber

waste port Spring return

SINGLE ACTING CYLINDER

Forcible surface

supply port

Pressurized chamber DEpressurized chamber

waste port

Spring return

Forcible surface supply port

DEpressurized chamber

DOUBLE ACTING CYLINDER

waste port

Forcible surface waste port

DEpressurized chamber

DOUBLE ACTING CYLINDER

supply port

Forcible surface waste port

DEpressurized chamber

DOUBLE ROD CYLINDER

supply port

Cylinders

Linear actuators

Linear actuators

CONTROL ELEMENTS / ACTUATING DEVICES

Directional valves

CONTROL ELEMENTS / ACTUATING DEVICES

Directional valves

CONTROL ELEMENTS / ACTUATING DEVICES

Directional valves

Directional valves

CONTROL ELEMENTS / ACTUATING DEVICES

CONTROL ELEMENTS / ACTUATING DEVICES

Directional valves

CONTROL ELEMENTS / ACTUATING DEVICES

Directional valves

CONTROL ELEMENTS / ACTUATING DEVICES

Directional valves

Actuation option

Actuation option

Actuation option

Valve nomenclature

One way flow control valve

One way flow control valve

One way flow control valve

Shutoff valve

Check valve / no return valve

Check valve / no return valve

Check valve / no return valve

3 way pressure regulation valve

3 way pressure regulation valve

3 way pressure regulation valve

DRAWING SYMBOLS

ISO 1219-2

SYMBOLS

Pump

Power line

Control line

Branches

By pass

SYMBOLS

Container

Filter

SYMBOLS

Fixed Adjustable

1 way motor

2 way motor

SYMBOLS Single acting cylinder

SYMBOLS Double acting cylinder

SYMBOLS

Valve name Initial position Symbol

SYMBOLS

Valve name Initial position Symbol

SYMBOLS

Valve name Initial position Symbol

SYMBOLS

Pressure reliev valve/pressure limiter valve

2 way Pressure regulator P-A-T

3 way Pressure regulator P-T

SYMBOLS

Fixed Adjustable

SYMBOLS

Check valve

Check valve spring loaded

SYMBOLS

Manometer

Component designation

System circuit diagram