LANDMARK Projects
Solar Thermal Project in Southern Europe
The
solar plant
consists of a solar light captation system trough special mirrors.
These ones reflect the sun light to the tower situated on center of the
plant. On this tower a sun light receptor mounted on a tower produces
the steam. The steam coming from this "special boiler", is admitted in
the HP steam turbine.
The
steam turbine is a designed dual casing with:
1) High
pressure section back pressure type, downward exhaust running at 6200
RPM.
2) Low pressure section condensing type, axial exhaust running at 4200
RPM.
3) The shaft line is completed with a 4-poles generator running at 1500
RPM installed between two reduction gears.
The
power at generator terminals is 20 MW.
The
steam turbine is designed according to the following principles:
1)
Single casing combined HP/IP cylinder.
2) Single casing LP cylinder.
3) Stop valve and control valves on HP cylinder.
4) Crossover pipe with mist eliminator, and butterfly valve for LP
induction.
5) Impulse type blades.
6) Integral forged rotors.
The
dual casing
design consists of a single flow (back-pressure type) HP section and a
single flow (condensing type) LP section, for two different rotors
running at two different rated speed. The steam coming from the boiler
is admitted in HP turbine trough N°1 emergency and stop valve
of
plug type hydraulically operated and N°4 control valves of plug
type operated by individually servomotors. After expanding trough the
HP turbine blading is discharged on a crossover pipe, in which the
humidity of the steam is reduced with a mist eliminator. The steam
coming from the mist eliminator is admitted in the LP turbine trough
N°1 emergency stop valve of butterfly valve hydraulically
operated,
and N°1 control valve of butterfly valve hydraulically
operated.
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