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Gas fuel nozzle assembly

A gas fuel and nozzle technology, applied in combustion chambers, combustion methods, combustion equipment, etc., can solve the problems of affecting local fuel-air mixing, affecting emissions, ablation, etc., to increase premixing strokes, reduce energy waste, and strengthen mixing The effect of mixing uniformity

Active Publication Date: 2019-04-12
AECC SHENYANG ENGINE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, there is a low-velocity zone at the downstream outlet end face of the fuel-air premixing section, which is prone to ignition and ablation. Air cooling is usually used, but it will affect local fuel-air mixing, thereby affecting emissions

Method used

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Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application. Embodiments of the present application will be described in detail below in conjunction with th...

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Abstract

The invention belongs to the technical field of gas turbine engines, and particularly relates to a gas fuel nozzle assembly. The gas fuel nozzle assembly (10) comprises an outer guiding cover (11), aswirler (14), an inner guiding cover (15), an end plate (18), a lining (19) and an impact plate (21). Fuel can penetrate through an impact hole (22), a through hole (19) and a mixing hole (17) in sequence, pass through a primary fuel passage and a secondary fuel passages, and reach an air passage (16) to sufficiently premix with air. According to the gas fuel nozzle assembly, the premixing strokeof fuel and the air is increased by premixing the fuel with the air in the air passage, and the mixing uniformity of the fuel and the air is intensified; meanwhile, the turbulence of fuel flow is increased through the primary fuel passage and the secondary fuel passage, and the mixing effect of the fuel and the air is intensified; and the fuel can impact and cool a nozzle end plate before premixing with the air, the nozzle cooling effect is intensified while the fuel temperature is improved, and the energy waste is reduced.

Description

technical field [0001] The application belongs to the technical field of gas turbine engines, and in particular relates to a gas fuel nozzle assembly. Background technique [0002] Gas turbine engines are widely used to generate electricity for many applications. A conventional gas turbine engine includes a compressor, a combustor, and a turbine. The compressor supplies compressed air to the combustor, where it is mixed with fuel and burned. The resulting hot gases are expelled from the combustor and flow into the blades of the turbine, which cause the shaft in the turbine, which is connected to the blades, to generate Rotation, the mechanical energy generated by the rotating shaft drives the compressor and / or other mechanical systems. [0003] Gas turbine engines will produce NOx to cause air pollution. One way to reduce NOx emissions is to use a dry low-NOx combustion system. [0004] The dry low NOx combustion system adopts lean fuel premixed combustion, and one of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/38F23R3/28F23R3/02
CPCF23R3/02F23R3/286F23R3/38
Inventor 齐兵朱涛金戈张善军
Owner AECC SHENYANG ENGINE RES INST
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