DAMPING DEVICE FOR COMBUSTION CHAMBER OF GAS TURBINE Russian patent published in 2015 - IPC F23R3/16 

FIELD: machine building.

SUBSTANCE: damping device for the combustion chamber of the gas turbine contains a wall with first internal wall and second external wall at distance from each other, multiple cooling channels going in principle parallel between the first internal wall and the second external wall, at least one damping volume, first passage for cooling medium supply from the cooling channel to the damping volume, and a narrow passage to connect the damping volume with the combustion chamber. The internal wall is subjected to high temperatures at side with hot gas flow. The damping volume is limited by the cooling channels. The end plate is secured to the internal wall separating the damping volume from the combustion chamber. Wherein the end plate is made with narrow passage, and additionally has at least one supply chamber for the cooling medium, at least one release chamber for the cooling medium, and at least one cooling channel, ensuring the cooling medium flow from at least first supply chamber to the second supply chamber or to at least one release chamber.

EFFECT: invention creates system of the near wall cooling for the damping device of the combustion chamber of the gas turbine with significantly reduced requirements for the cooling air flow rate, thus excluding drawbacks of the expensive casting methods.

17 cl, 6 dwg