The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1987
Filed:
Oct. 22, 1986
Hansulrich Frutschi, Riniken, CH;
BBC Brown, Boveri & Company Limited, Baden, CH;
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.