Arrangement for damping combustion-chamber oscillations

Details Arrangement for damping combustion-chamber oscillations Arrangement for damping combustion-chamber oscillations

1998-07-08

2000-12-26

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Combined with regulation of power output feature

60725, 431114, F23R 304, F23R 350

Patent

active

061640581

ABSTRACT:
In an annular combustion chamber for a gas turbine, a combustion-chamber dome (14) is arranged upstream of an air-cooled combustion chamber (10). A first portion of an air flow (46) which comes from the compressor is admixed as combustion air to the combustion operation and cooling ducts (22; 24) feed a second portion of the air flow (46) coming from the compressor as cooling air into the combustion chamber (10). In this case, the cooling ducts (22; 24), which run at least in sections along the combustion chamber (10), have an entry (23; 25) into the combustion-chamber dome (14). The cooling ducts (22; 24) are designed for damping combustion-chamber oscillations in such a way that the acoustic impedance at the entry (23; 25) of the cooling ducts (22; 24) into the combustion-chamber dome (14) is minimized.

REFERENCES:
patent: 2256198 (1941-09-01), Hahn
patent: 2930195 (1960-03-01), Blackman et al.
patent: 3734234 (1973-05-01), Wirt
patent: 3848697 (1974-11-01), Jannot et al.
patent: 4137992 (1979-02-01), Herman
patent: 4199936 (1980-04-01), Cowan et al.
patent: 4298090 (1981-11-01), Chapman
patent: 5044930 (1991-09-01), Hongo et al.
patent: 5644918 (1997-07-01), Gulati et al.

Affiliated with

Also associated with

Rating

Arrangement for damping combustion-chamber oscillations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arrangement for damping combustion-chamber oscillations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for damping combustion-chamber oscillations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-982696