Upload
radaur
View
222
Download
0
Embed Size (px)
Citation preview
8/14/2019 Fluid System
1/26
FLUIDSystem
8/14/2019 Fluid System
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
8/14/2019 Fluid System
3/26
Hydraulic Accumulator
8/14/2019 Fluid System
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.
8/14/2019 Fluid System
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.
8/14/2019 Fluid System
6/26
Hydraulic Intensifier
8/14/2019 Fluid System
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.
8/14/2019 Fluid System
8/26
LowWATES
Schematic Diagram Of the Intensifier
8/14/2019 Fluid System
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.
8/14/2019 Fluid System
10/26
Hydraulic Ram
8/14/2019 Fluid System
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.
8/14/2019 Fluid System
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.
8/14/2019 Fluid System
13/26
Hydraulic lift
8/14/2019 Fluid System
14/26
8/14/2019 Fluid System
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.
8/14/2019 Fluid System
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.
8/14/2019 Fluid System
17/26
Hydraulic Crane
8/14/2019 Fluid System
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.
8/14/2019 Fluid System
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.
8/14/2019 Fluid System
20/26
Hydraulic Coupling
8/14/2019 Fluid System
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
8/14/2019 Fluid System
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.
8/14/2019 Fluid System
23/26
Hydraulic Torque Converter
Cut away model of a Torque Converter
8/14/2019 Fluid System
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%.
8/14/2019 Fluid System
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
8/14/2019 Fluid System
26/26
ThankYou