FROM EXCEL

1. Excel polytechnic college
DEPARTMENT OF MECHANICAL
ENGINEERING

2. SEMINAR
FLUID MECHANICS AND
FLUID POWER

3. Title : HYDRAULIC SYSTEM
Subject : SPECIAL MACHINES
Section :C
Department: Mechanical
Group Members
:DineshPiran G
:Damchuilang gangmei
:Dheeraj kumar rajak
:Ellakkiyan . P
:Karthi . M
:Loganathan . M

4. CONTENTS
• INTRODUCTON
• ELEMENTS OF HYDRAULIC SYSTEM
• WORKING
• ADVANTAGES
• DISADVANTAGES
• CONCLUSION

5. INTRODUCTION
The hydraulic system which transmit
power from one place to another place
by using pressurised oil or water is
called hydraulic system.
Hydraulic system is used to perform
useful work in various field such as
machine to industries , agriculture ,
space , defence , automobile etc……..

6. Elements of hydraulic system

7. Described elements
1.PUMP :
A pump is necessary to pump the
fluid under pressure from the reservoir
into the system. It is driven by the
driven by the prime mover.
2.Reservoir :
A reservoir is required to draw the
fluid into the system when required and
the fluid is to be returned when the
system must be relieved.

8. 3.Control valve :
different valves are required
to control pressure, rate of flow and
direction of flow of the fluid which is
being pump into the system by the
pump.
4.Actuator :
an actuator may be either a
cylinder of fluid motor. It receives a
fluids from the pump and converts the
hydraulic energy into mechanical work
either by linear motion or rotary
motion.

9. Working of hydraulic system
When the pump is driven by prime mover,
it draws oil from the tank and then
increases the pressure of the oil.
High pressure oil flows through control
valves.
They control the pressure, flow rate and
direction of the oil.
Oil enter the actuator .
When actuator is a hydraulic cylinder, it
converts oil energy into linear motion.

10. advantages
The speed control is accurate.
As moving parts are less maintenance
is easier.
Hydraulic system is simple and compact
than mechanical system.
Hydraulic system is suitable for a heavy
load applications.
It is silent in operation.

11. disadvantages
As oil flows under pressure,
leakage through pipe fittings can
not be prevented.
Leakage of oil reduces the force.
Cost of oil is high.
Hydraulic line may burst, causing
human injury.

12. conclusion
Hydraulic systems offer
versatility and high power
density as compared to other
types of power transmission.
Relatively a small number of
components, pumps, valves,
actuators…. That’s basically it.