DAMPER FOR A COMBUSTOR ASSEMBLY OF A GAS TURBINE ASSEMBLY, COMBUSTOR ASSEMBLY COMPRISING SAID DAMPER AND METHOD FOR MANUFACTURING A DAMPER FOR A COMBUSTOR ASSEMBLY

    公开(公告)号:EP3760925A1

    公开(公告)日:2021-01-06

    申请号:EP19183732.7

    申请日:2019-07-01

    IPC分类号: F23M20/00

    摘要: A damper for a combustor assembly (3) of a gas turbine assembly (1) is provided with:
    at least two damping volumes (32, 35) defined by respective damping bodies (31, 34); the damping volumes (32, 35) being interconnected in fluidic communication;
    at least one perforated connecting plate (36) connecting the two damping volumes (32, 35);
    at least one perforated end plate (38) configured to connect at least one of the two damping volumes (32, 35) with a combustion chamber (16; 14) of the combustor assembly (3);
    the perforated connecting plate (36) and the perforated end plate (38) being provided with a plurality of openings (42);
    the openings (42) being dimensioned so as to operate in a low Strouhal regime according to the following formula ω ⋅ R H / Ub 0 , 5 wherein:
    • ω is the angular frequency correlated to the frequency to damp according to the following relation ω=2πf;
    • R H is the equivalent radius of one of the openings (42);
    • U b is the velocity of the flow through one of the openings (42).