초록 ▼

A flue-gas duct of a gas and steam-turbine plant is constructed in such a way that reliable sound absorption is ensured with especially simple provisions, even when using internally insulated duct pieces, in particular an internally insulated waste-heat boiler. The flue-gas duct includes a duct piec

A flue-gas duct of a gas and steam-turbine plant is constructed in such a way that reliable sound absorption is ensured with especially simple provisions, even when using internally insulated duct pieces, in particular an internally insulated waste-heat boiler. The flue-gas duct includes a duct piece having a number of sound-absorber gates. At least one sound-absorber gate has a displacement nose disposed upstream thereof on the flue-gas side. A gas-switch module having a displaceable shut-off damper is disposed downstream of the duct piece which is constructed as a sound-absorber module, on the flue-gas side. The shut-off damper includes first and second substantially mutually perpendicularly oriented shut-off plates.

대표청구항 ▼

[ We claim:] [1.] A duct piece for a flue-gas duct of a gas turbine, comprising:a plurality of sound-absorber panels disposed side by side in a flue gas flow direction and having a flue-gas side; anda plurality of displacement noses each disposed upstream of a respective one of said plurality of sou

[ We claim:] [1.] A duct piece for a flue-gas duct of a gas turbine, comprising:a plurality of sound-absorber panels disposed side by side in a flue gas flow direction and having a flue-gas side; anda plurality of displacement noses each disposed upstream of a respective one of said plurality of sound-absorber panels on said flue-gas side, said plurality of displacement noses having a linear extension increasing toward a flue-gas duct center and homogenizing a flow profile of a flue gas and reducing peak velocities of the flue gas for reducing mechanical loading of said plurality of sound-absorber panels.