GAS TURBINE ASSEMBLY FOR POWER PLANT COMPRISING A COMPACT BROADBAND DAMPING DEVICE

• Main Authors: BOUDY, Frédéric, MAURER, Michael Thomas
• Format: Patent
• Language: English; French; German
• Published: 30.03.2022
• Subjects: BLASTING; CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FORCOMBUSTION CHAMBERS, e.g. FIREBRIDGES; COMBUSTION APPARATUS; COMBUSTION PROCESSES; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDEDFOR; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS INCOMBUSTION CHAMBERS; GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS; HEATING; LIGHTING; MECHANICAL ENGINEERING; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTIONAPPARATUS; WEAPONS

A gas turbine for power plant; the gas turbine (1) having an axis (9) and comprising: a compressor sector (2) for compressing ambient air; a combustor sector (4) for mixing and combusting the compressed air with at least a fuel; the combustor sector (4) comprises at least a liner (7, 26) defining a combustion chamber (6, 21, 23) having an axial direction (A) and a circumferential direction (C); at least a turbine sector (3) for expanding the combusted hot gas flow leaving the combustors (4) and performing work on a rotor (8); at least a damping device (28) arranged outside the combustion chamber (6, 21, 23) and comprising a damping volume (29) and a perforated plate (30) configured for fluidly connecting the combustion chamber (6, 21, 23) to the damping volume (29) for damping pressure fluctuations generated inside the combustion chamber (6, 21, 23); wherein the perforated plate (30) is slanted shape so that the radial thickness of the perforated plate (30) varies along the axial combustor direction (A) and/or along the circumferential combustor direction (C).