| High
pressure and temperature steam which came from the boiler
through the main stop valve & control valve, enters
the turbine inlet, where, the valve controls turbine
speed with steam flow and generates kW output by its
turning power. Through the valve, the steam enters
high pressure turbine and passes through the stationary
blade and rotational blade then it makes the turbine
rotor rotate using the velocity energy from the blade.
The steam which passed through high pressure section
is sent again to reheater for reheating to get better
efficiency. In this way, this steam comes into intermediate
pressure turbine through the combined reheat valve
and it adds torque with steam velocity energy.
The steam having lower temperature and pressure from
intermediate pressure turbine exhaust, then this flows
to the low pressure turbine passing through cross-over
pipe. It adds the turbine rotating power much more
and finally transmits to the generator.
The exhaust steam from the low pressure turbines
passes down into the condensers where it cools, condenses
back to water, and is then pumped to the boiler, where
the entire steam cycle is repeated.
In turn, the generator shaft becomes an electro-magnet
which has a torque force from the turbine. It produces
the electricity when the current occurs around stator
winding. Thus the mechanical energy from the turbine
is converted into electrical energy in the generator.
Electricity is finally delivered throughout the
city via this distribution grid, to factories, offices,
schools, stores and, of course, your home, as mankind¡¯s
most useful and reliable form of energy. |