Power plants – Combustion products used as motive fluid
Patent
1986-10-22
1987-08-18
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60727, F02C 700
Patent
active
046868224
ABSTRACT:
The gas turbine of an air storage gas turbine power station is so designed that it can provide the nominal output requirement without extracting air from the storage cavern (17). The compressor group (3+4) has internal control organs in the form of guide vanes and possibly also rotor blading which can be adjusted during operation. This adjustable blading makes it possible to maintain the pressure ratio necessary for attaining the nominal power during the other operating conditions also and makes it possible to keep the compressor final pressure at at least the same level as the storage air pressure. By this means, it is possible to fill the storage cavern (17) during the whole of the part-load range and during idling operation in addition to filling it by exclusively electric motor drive of the compressor group (3+4) by the generator (2 or 31), connected as motor, or by an electric motor (29) specially provided for this purpose. So that the rigid coupling between the compressor group (3+4) and the running turbine (1 or 30) can be made or broken, a rotational speed synchronizing device is provided between the line of driving shafts (5+6) of the turbine, preferably in the form of a hydrodynamic torque converter (7 or 33) which can be locked or of an electromagnetic induction coupling. The turbine (1; 30) preferably has adjustable guide vanes or partial admission in the first stage.
REFERENCES:
patent: 2371706 (1945-03-01), Planiol
patent: 2613029 (1952-10-01), Wilde
patent: 3101926 (1963-08-01), Weber
patent: 3643426 (1972-02-01), Janelid
patent: 4312179 (1982-01-01), Zaugg
patent: 4403477 (1983-09-01), Schwarzenbach
patent: 4522024 (1985-06-01), Zaugg
BBC Brown Boveri & Company Limited
Casaregola Louis J.
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