Gas turbine combustion chamber

Abstract

The present invention relates to the technical field of gas turbines, and discloses a gas turbine combustion chamber, so as to improve a fuel in the combustion chamber and an air pre-mixing structure, enable the fuel to be uniformly mixed, and lower combustion temperature to reduce production of NOx. Tempering and autoignition probabilities in the combustion process can also be reduced, and the structure of the combustion chamber is simplified. The gas turbine combustion chamber comprises a main combustion level fuel tube, a pre-combustion level fuel tube, a main combustion level swirler, a pre-combustion level swirler, a flame tube and a turbine receiver wrapping the above parts in a clearance fit manner, wherein a discharge hole of the main combustion level fuel tube is communicated with the main combustion level swirler, a discharge hole of the pre-combustion level fuel tube is communicated with the pre-combustion level swirler, a pre-mixing channel tube is arranged at exits of the main combustion level swirler and the pre-combustion level swirler, the funnel-shaped pre-mixing channel tube encircles the pre-combustion level swirler and is communicated with a flame tube head part at the entrance of the flame thube, and the side of the turbine receiver is at least provided with one air inlet duct.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to a combustion chamber of a gas turbine. Background technique [0002] The gas turbine is an internal combustion power machine that uses continuous flowing gas as the working medium to drive the impeller to rotate at high speed, and converts the energy of the fuel into useful work. It is a typical high-tech intensive product. As a high-tech carrier, the gas turbine represents the comprehensive level of development of multiple theoretical disciplines and multiple engineering fields, and is one of the important symbols of the country's high-tech level and scientific and technological strength, and has a very prominent strategic position. The three major components of a gas turbine are the combustor, compressor and turbine, and the performance of the combustor will directly affect the overall performance of the gas turbine. Gas turbine combustion products contain NOx (nitrogen o...

AI Technical Summary

Problems solved by technology

At present, the low NOx emission combustor is mainly a lean-oil premixed pre-evaporative combustor with a complex structure. The fuel and air in the lean-oil pre-mixed pre-evaporative combustor are not mixed uniformly and fully in the premixed mold, resulting in excessively high combustion temperature. A large amount of NOx is generated, and it is easy to have flashback and spontaneous combustion problems during the combustion process

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