Combustion device for a gas turbine

摘要

The combustion device (1) for a gas turbine comprises a portion (6) provided with an inner and an outer wall (7, 8). The inner wall (7) comprises first passages (9) connecting the zone between the inner and outer wall (7, 8) to the inner (10) of the combustion device (1). The outer wall (8) comprises second passages (12) for cooling the inner wall (7). Between the inner and outer wall (7, 8) an intermediate layer (17) is provided defining a plurality of chambers (18), each connected to at least one first passage (9) and a plurality of second passages (12) and defining Helmholtz dampers. These second passages (12) open in third passages (22) connected to the chambers (18) and have facing outlets (23).