Fluid System

8/14/2019 Fluid System

1/26

FLUIDSystem


2/26

Introduction It is defined as the device in which power is

transmitted with the help of a fluid which may bea liquid or a gas under pressure

Few devices which will be discussed:1. Hydraulic Accumulator

2. Hydraulic intensifier

3. Hydraulic ram

4. Hydraulic lift

5. Hydraulic crane6. Hydraulic coupling

7. Hydraulic torque converter


3/26

Hydraulic Accumulator


4/26

A hydraulic accumulatorIS AN

ENERGY STORAGE DEVICE. IT IS A

PRESSURE STORAGE RESERVOIR IN

WHICH A NON-COMPRESSIBLE

HYDRAULIC FLUID IS HELD UNDER

PRESSURE BY AN EXTERNAL

SOURCE.


5/26

Accumulator

Inlet supplies water from

pump under

pressure. ram is at lowest point in the

beginning.Water supplied will raise the

ram onwhich load is placed.

Ram at outer most position

makes the cylinder fill with

water and the accumulator storesenergy and when it is required it

supplies the energy.


6/26

Hydraulic Intensifier


7/26

Introduction It is a device used to increase the intensity of

pressure of water by means of hydraulic

energy available from a large amount of water

at low pressure.

This type of device is used in hydraulic

machine such as hydraulic press which

requires water under high pressure, which

cant be obtained from direct supply.


8/26

LowWATES

Schematic Diagram Of the Intensifier


9/26

Working of Hydraulic Intensifier

Water from the upper low pressure supply

enters in the fixed cylinder,exerting force

downward.

This makes the Movable cylinder move

downward and thus water b/w the fixed ram

and the movable cylinder compresses and it

flows out from the outlet with high pressure.


10/26

Hydraulic Ram


11/26

Introduction

It is a pump which raises water without anyexternal power for its operation.

The hydraulic ram is sometimes used in

remote areas, where there is both a source oflow-head hydropower, and a need for pumpingwater to a destination higher in elevation thanthe source. In this situation, the ram is oftenuseful, since it requires no outside source ofpower other than the kinetic energy of water.


12/26

Working Of Hydraulic Ram

1. Water flows fromSupply Tank to the

chamber.

2. Water starts filling

the chamber & lifting

up the valve B.

3. At a point B closes

suddenly and force

open C.

4. Water compresses theair in the air vessel.

5. Small qty. of water

goes to the greater

height.


13/26

Hydraulic lift


14/26


15/26

1. Direct acting Hydraulic Lift

Liquid under pressure flows

into fixed cylinder.

This liquid exerts force on

the sliding ram. This moves the ram

vertically up .

Thus the cage reaches to therequired height.


16/26

2. Suspended Hydraulic Lift

JiggerFixedPulleyBlock

EEY

Fill water in the

jigger . Ram moves along

with movable

pulley in the leftdirection. Gap b/w the pulleys

increases. Hence the cage

moves up.


17/26

Hydraulic Crane


18/26

Introduction A hydraulic crane is a device which is used for

raising or transferring heavy loads.

It is Widely used in work shops,ware house anddock sidings.

Few parts which a crane must carry are

1. Jib- Any triangular fore-and-aft sail (set forwardof the foremast).

2.Tie- A cord (or string or ribbon or wire etc.) with

which something is tied.3.Mast- A vertical spar for supporting sails or Anysturdy upright pole.

4.Guide Pulley.

5.Jigger- Any small mast on a sailing vessel.


19/26

Working Of Hydraulic Crane

Water fills

in thejigger .

Gap b/w

pulleyincreases as

the ram moves

up along with

the movablepulley. Hence load

is lifted.


20/26

Hydraulic Coupling


21/26

Introduction

It is a device use to transmit power from

driving shaft to driven shaft with the help of

fluid.

There is no mechanical connection between

the two shaft.

It consists of a radial pump impeller mounted

on driving shaft and a radial flow reaction

turbine mounted on the driven shaft


22/26

Working Of Hydraulic Coupling In beginning both the shaft are

at rest.

When A rotates ,oil startsmoving from inner radius to the

outer radius of the pump impeller. The P.E. & K.E. of the oil

increases at outer radius of pumpimpeller. This oil of increased energy

enters the runner at its outer radius

and flows through its inner radius.

During this process ,the oiltransfers its energy to the blades

of the runner and makes the

runner to rotate.

The oil from the runner flowsback into the um im eller.


23/26

Hydraulic Torque Converter

Cut away model of a Torque Converter


24/26

Introduction

It is a device used for transmitting increasedtorque at the driven shaft .

The torque transmitted at the driven shaft may

be less or more than the torque available at thedriving shaft.

The torque at the driven shaft may be

increased about five times the torque availableat the torque available at the driving shaft with

an efficiency of about 90%.


25/26

Working Of Torque ConverterThe construction is

same as in Hydraulic

Coupling.

But in order to increase

the torque the speed of the

driven shaft should be

decreased. This is because

Power at any shaft is

directly proportional to theproduct of speed and

torque of the shaft.

For this the oil from the

impeller is allowed to run


26/26

ThankYou

Fluid System

Documents

Transcript of Fluid System