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Systems and methods for dampening combustor dynamics in micromixer

A technology of micro-mixer and combustion chamber, which is applied in the direction of combustion method, combustion chamber, continuous combustion chamber, etc., and can solve the problem of high peak power of combustion chamber

Active Publication Date: 2013-09-25
GENERAL ELECTRIC TECH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, peaks in combustion chamber power may be high during transient mode switching or during part load operation
In addition, screech dynamics, generally regarded as one of the most destructive forms of dynamics, may reach high levels during part load operation

Method used

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  • Systems and methods for dampening combustor dynamics in micromixer
  • Systems and methods for dampening combustor dynamics in micromixer
  • Systems and methods for dampening combustor dynamics in micromixer

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Embodiment Construction

[0013] Illustrative embodiments will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments are shown. The invention may be embodied in many different forms and should not be construed as limited to the various embodiments set forth in this patent application document. In the drawings, like numbers refer to like elements.

[0014] The illustrative embodiments relate, inter alia, to micromixers for combustion chambers. Figure 1 shows a schematic diagram of a gas turbine engine 10 that may be used in the present specification. As is well known, gas turbine engine 10 may include a compressor 15 . Compressor 15 compresses an incoming air stream 20 . Compressor 15 delivers compressed air flow 20 to combustor 25 . Combustion chamber 25 mixes compressed air flow 20 with pressurized fuel flow 30 and then ignites the mixture to produce combustion gas flow 35 . Although only a single combustor 25 is shown, the gas tur...

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Abstract

The invention discloses systems and methods for dampening combustor dynamics in a micromixer. According to one embodiment, the system may include a micromixer. The system may also include at least one annular resonator disposed within the micromixer adjacent to a cap face plate or an impingement plate of the micromixer. The at least one annular resonator may include a first side including a number of holes forming a cold side hole pattern, a second side including a number of holes forming a hot side hole pattern, and a cavity substantially defined by the first side and the second side.

Description

technical field [0001] Various embodiments of the present application relate generally to gas turbine engines, and more specifically, to systems and methods for damping combustor dynamics. Background technique [0002] Gas turbines typically operate at base load or part load. Load operation can in part determine fuel consumption. Fluctuations in the rate of fuel consumption can create combustor dynamics that can spread throughout the combustor. When the gas turbine is at base load, the peak combustor power is generally relatively low. However, peaks in combustion chamber power may be higher during transient mode switching or during part load operation. Furthermore, screech dynamics, generally regarded as one of the most destructive forms of dynamics, may reach high levels during part load operation. Accordingly, there is a need for systems and methods for damping combustor power. Contents of the invention [0003] Some or all of the above needs and / or problems may be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/28
CPCF23R3/286F23R2900/00014F23M20/005F23R2900/03044F02C7/24F05D2260/963F23R3/16F23R3/32
Inventor P.B.梅尔顿J.H.维斯特莫兰
Owner GENERAL ELECTRIC TECH GMBH
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