Patent ID: 9181875
Filing Date: 2015-11-10
Classification: F02C,F04D,F05D

Abstract:
1. An intake manifold for inducting combustion air for a compressor of a gas turbine, the intake manifold comprising: a plurality of walls that delimit against the environment; devices are provided to controllably change a mechanical rigidity of the walls to reduce noise which is generated or is emitted in an air intake region during operation of the gas turbine; wherein the devices for the controllable change of a mechanical rigidity of the walls comprise piezoelements which are connected to a control unit; and wherein the walls comprise wall plates which, with the aid of frames and/or stiffening girders, are mechanically stiffened, the piezoelements are arranged at predetermined points between the wall plates and the frames or stiffening girders in such a way that as a result of their actuation the mechanical rigidity of the wall plates can be changed.