COMBUSTOR AND GAS TURBINE HAVING THE SAME

• US 20110220433A1
• Filed: 10/15/2009
• Published: 09/15/2011
• Est. Priority Date: 02/27/2009
• Status: Active Grant

• Current Assignee: Mitsubishi Power Limited (Mitsubishi Heavy Industries, Ltd.)
• Original Assignee: Mitsubishi Heavy Industries, Ltd.
• Inventors: Taniguchi, Kenta, Kinoshita, Taiki, Matsuyama, Keisuke, Ono, Masaki, Nakamura, Sosuke
• Granted Patent: US 8,490,744 B2
• Time in Patent Office: Days
• US Class Current: 181/213
• CPC Class Codes: F01D 25/04 Antivibration arrangements
• CPC Class Codes: F01D 9/023 Transition ducts between combustor cans and first stage of the turbine in gas-turbine engines; their cooling or sealings
• CPC Class Codes: F23M 20/005 Noise absorbing means
• CPC Class Codes: F23R 2900/00014 Reducing thermo-acoustic vibrations by passive means, e.g. by Helmholtz resonators silence apparatus using resonance F01N1/023
• CPC Class Codes: F23R 3/005 Combined with pressure or heat exchangers
• CPC Class Codes: F23R 3/06 Arrangement of apertures along the flame tube
• CPC Class Codes: F23R 3/46 Combustion chambers comprising an annular arrangement of several essentially tubular flame tubes within a common annular casing or within individual casings

Abstract

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).

Claims

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 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.