A three-swirl combustor with pre-combustion stage direct injection main combustion stage premixed pre-evaporation

Abstract

The invention discloses a three-swirl combustor with pre-combustion stage direct injection and main combustion stage premixing and pre-evaporation, which includes a diffuser, an outer casing, an inner casing, a flame tube, a high-energy ignition nozzle, an oil supply pipe and The head of the flame tube, the head of the flame tube is composed of a pre-combustion stage and a main combustion stage. composition. The present invention adopts staged combustion, especially the special structural design and layout of the first-stage axial oblique-cut hole cyclone and the second-stage radial oblique-cut hole cyclone, as well as the oil supply method of the main combustion stage. The premixed combustion of the combustion stage can achieve the purpose of reducing the pollution emission of the combustion chamber, and it also simplifies the complexity of the fuel supply system of the main combustion stage during the staged fuel supply, reduces the weight, and at the same time can reduce the use of oil collection chambers for the main combustion grade fuel. risk of nozzle coking when fuel is being supplied.

Description

technical field [0001] The invention belongs to the technical field of combustion chambers, and in particular relates to a three-swirl combustion chamber with pre-combustion stage direct injection and main combustion stage premixing and pre-evaporation. Background technique [0002] As people pay more and more attention to the living environment and health, people also pay more attention to and strictly control various pollution sources that endanger their own health and damage the environment. Although the proportion of aero-engines and industrial gas turbines is small in terms of the total emissions of combustion pollutants, high concentrations of pollutant emissions are accumulated due to their local characteristics, such as near airports and where industrial gas turbines are used. In the air, pollutant emissions from various types of aircraft are the only source of high-altitude air pollutants. As a result, emissions from gas turbines (including aircraft engines and var...

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Problems solved by technology

[0007] Although the above-mentioned aero-engines or ground gas turbines have solved the emission requirements of low-pollution gas turbines to varying degrees, their structures and fuel supply systems are complex, resulting in excessive weight. Aiming at the above shortcomings, a pre-combustion stage direct injection main combustion stage pre-combustion stage is proposed. Mixed and pre-evaporated three-swirl combustor

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