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Micromixer combustion head end assembly

一种微混合器、组件的技术，应用在燃烧室、燃烧方法、燃烧设备等方向

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

AI Technical Summary

Problems solved by technology

However, the higher temperature of the combustion gas stream produces higher levels of undesired emissions such as nitrogen oxides (NOx), etc.

Method used

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  • Micromixer combustion head end assembly
  • Micromixer combustion head end assembly
  • Micromixer combustion head end assembly

Examples

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Embodiment Construction

[0035] Illustrative embodiments will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments are shown. The present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth in this specification. In the drawings, the same numerals denote the same parts.

[0036] Among other things, the illustrative embodiments relate to micromixers for combustors. figure 1 Shown is a schematic diagram of a gas turbine engine 10 that may be used in this 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 one combustor 25 is shown, gas turbine engine 10 may includ...

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Abstract

The invention discloses systems and methods for a micromixer combustion head end assembly. The micromixer may include one or more base nozzle structures. The base nozzle structures may include coaxial tubes. The coaxial tubes may include an inner tube and an outer tube. The micromixer may also include one or more segmented mixing tube bundles at least partially supported by a respective base nozzle structure. Moreover, the micromixer may include an end cap assembly disposed about the one or more segmented mixing tube bundles.

Description

technical field [0001] The present invention relates generally to gas turbine engines, and more specifically to micromixers. Background technique [0002] The efficiency of a gas turbine generally increases as the temperature of the combustion gas stream increases. However, the higher temperature of the combustion gas stream produces higher levels of undesired emissions such as nitrogen oxides (NOx) and the like. NOx emissions are usually regulated by the government. Therefore, increasing the efficiency of gas turbines must be combined with compliance with emission regulations. [0003] Lower NOx emission levels can be achieved by proper mixing of fuel flow and air flow. For example, the fuel and air streams can be premixed in a dry low NOx (DLN) combustor before entering the reaction zone or combustion zone. Such premixing tends to lower combustion temperatures and reduce NOx emissions output. [0004] In current micromixer designs, there may be multiple fuel feeds and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/02
CPCF23R3/286
Inventor J.H.维斯特摩尔兰P.B.梅尔顿
Owner GENERAL ELECTRIC TECH GMBH