Combustor and gas turbine having the same
View Patent ↗An object is to provide a combustor that requires a small mounting space for an acoustic damper, that can achieve size reduction, and that can improve the ease of maintenance. A combustor ( 5 ) of the present invention includes a combustion cylinder ( 19 ) that defines a combustion area ( 23 ) therein and an acoustic damper ( 31 ) that has a damper cover having an acoustic-damper resonance space communicating with the combustion area ( 23 ). The damper cover is provided along the combustion cylinder ( 19 ) so as to extend in a direction intersecting an axial direction (L) of the combustion cylinder ( 19 ).
1. A combustor comprising a cylindrical body that defines a combustion area therein; and
an acoustic damper that includes an acoustic portion having an acoustic-damper resonance space communicating with the combustion area,
wherein the acoustic portion is provided along the cylindrical body so as to extend in a direction intersecting an axial direction, and so as to be disposed widely in the circumferential direction, of the cylindrical body.
2. A combustor according to claim 1 , further comprising an acoustic liner formed by a porous plate that constitutes the cylindrical body and has a plurality of through-holes penetrating in a thickness direction and a cover member that is provided around and at a certain distance from the porous plate so as to cover the porous plate, the acoustic liner having an acoustic-liner resonance space.
3. The combustor according to claim 2 ,
wherein at least part of the acoustic portion is provided on the outer circumferential side of the cover member.
4. The combustor according to claim 1 ,
wherein the acoustic-damper resonance space is formed so as to make at least one turn.
5. The combustor according to claim 1 ,
wherein at least one fluid resisting member is provided in the acoustic-damper resonance space.
6. The combustor according to claim 1 ,
wherein a plurality of the acoustic dampers are provided.
7. A gas turbine comprising an air compressor, the combustor according to claim 1 , and a turbine.