Sound absorbing flue-gas duct for a gas and steam turbine plant

Details Sound absorbing flue-gas duct for a gas and steam turbine plant Sound absorbing flue-gas duct for a gas and steam turbine plant

1997-09-05

2000-04-18

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

With exhaust treatment

181213, F02C 700

Patent

active

060500840

ABSTRACT:
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.

REFERENCES:
patent: 4131432 (1978-12-01), Yoshihiro et al.
patent: 4821507 (1989-04-01), Bachmann et al.
patent: 5002121 (1991-03-01), von Erichsen

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