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Fluid coupling
Fluid coupling is power transmitting device which is used to transmit power from one server to another shaft with the help of fluid. there is no mechanical connection between the shaft.
It consists mainly two element
1. Radial pump impeller mounted on the drivers shaft run by prime movers).
2. Radial flow reaction turbine mounted on the driver shaft.
This tournament enclosed in single casing.the casing is filled with oil. this oil transmit torgue from pump impeller to turbine runner shaft.
As the driving shaft is
started, the pump impeller causes the
fluid to flow from the eye of the pump
impeller to the outer periphery of the
pump impeller, where it is discharged
inwardly through the turbine runner
back to the pump. As the speed of the
driving shaft is increased, the liquid
torque on the turbine runner increases
until it overcomes the inertia of the
driven unit, and the turbine runner and
shaft began to rotate.
The fluid coupling allows a
smooth power transmission and
eliminates all jerks and roughness. This
provide smooth take off and reduces
the wear and strain on the drive train.
The fluid coupling is very efficient at
high engine speeds, but not quite
effective at medium speeds.
HYDRAULIC TURBINES
Hydraulic Turbines-Hydraulic machines which convert hydraulic energy
water into mechanical energy are known as hydraulic turbines. A hydraulic
turbine uses the potential and kinetic energy of water and converts it into
mechanical energy. The mud energy is available in the natural or artificial high
evel water reservoirs which are created by constructing dams at appropriate
places in the flow path of rivers, Water falling from a height transfers its energy
to the turbine blades. The rotational energy of turbine blades is then utilized to
run an electric generator directly coupled to the turbine shaft
Hydraulic Pumps-The hydraulic machines which convert the mechanical
energy into hydraulic energy are called pumps. The hydraulic energy is in the
form of pressure energy. Pumps which are designed to raise or transfer the
liquids utilize the power. Thus, they are power absorbing machines. The energy
absorbed by the pumps makes them enable to overcome the hydraulic resistance
and make the liquid rise through a geodetic elevation.
shows the layout of a Pelton turbine in which the water from the reservoir flows
Casing through the penstock at the Outlet of which a nozzle is fitted.
The nozzle increases the kinetic energy of the water flowing through the penstock
At the outlet of the nozzle, the water comes out in the form of a jet and strikes the buckets (vanes) of the runner.
The jet of water strikes on the buckets
with a high velocity and after
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Fluid coupling is power transmitting device which is used to transmit power from one server to another shaft with the help of fluid. there is no mechanical connection between the shaft.
It consists mainly two element
1. Radial pump impeller mounted on the drivers shaft run by prime movers).
2. Radial flow reaction turbine mounted on the driver shaft.
This tournament enclosed in single casing.the casing is filled with oil. this oil transmit torgue from pump impeller to turbine runner shaft.
As the driving shaft is
started, the pump impeller causes the
fluid to flow from the eye of the pump
impeller to the outer periphery of the
pump impeller, where it is discharged
inwardly through the turbine runner
back to the pump. As the speed of the
driving shaft is increased, the liquid
torque on the turbine runner increases
until it overcomes the inertia of the
driven unit, and the turbine runner and
shaft began to rotate.
The fluid coupling allows a
smooth power transmission and
eliminates all jerks and roughness. This
provide smooth take off and reduces
the wear and strain on the drive train.
The fluid coupling is very efficient at
high engine speeds, but not quite
effective at medium speeds.
HYDRAULIC TURBINES
Hydraulic Turbines-Hydraulic machines which convert hydraulic energy
water into mechanical energy are known as hydraulic turbines. A hydraulic
turbine uses the potential and kinetic energy of water and converts it into
mechanical energy. The mud energy is available in the natural or artificial high
evel water reservoirs which are created by constructing dams at appropriate
places in the flow path of rivers, Water falling from a height transfers its energy
to the turbine blades. The rotational energy of turbine blades is then utilized to
run an electric generator directly coupled to the turbine shaft
Hydraulic Pumps-The hydraulic machines which convert the mechanical
energy into hydraulic energy are called pumps. The hydraulic energy is in the
form of pressure energy. Pumps which are designed to raise or transfer the
liquids utilize the power. Thus, they are power absorbing machines. The energy
absorbed by the pumps makes them enable to overcome the hydraulic resistance
and make the liquid rise through a geodetic elevation.
shows the layout of a Pelton turbine in which the water from the reservoir flows
Casing through the penstock at the Outlet of which a nozzle is fitted.
The nozzle increases the kinetic energy of the water flowing through the penstock
At the outlet of the nozzle, the water comes out in the form of a jet and strikes the buckets (vanes) of the runner.
The jet of water strikes on the buckets
with a high velocity and after
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