Mild gas turbine combustion chamber

Abstract

The invention provides a mild gas turbine combustion chamber, and relates to the technical field of gas turbines. Based on the defects that a traditional gas turbine combustion chamber is severe in working environment, large in heat load, high in temperature and speed, complex in flow field and the like, a fuel oil single-point injection combustor is changed into multi-point injection of the wallsurface of a flame tube, multi-point mixing of fuel oil and air can be achieved, a mild combustion area is established, and stable and efficient combustion is achieved; the wall surface of the flame tube is designed to be of a double-layer wall structure, the middle of the flame tube is designed to be of a honeycomb sandwich structure, high-temperature airflow inside the flame tube can be reasonably cooled, it is guaranteed that the fuel oil in a fuel oil branch pipe is sufficiently preheated, and meanwhile, the effect of reducing noise generated in the working process of the combustion chamber can be achieved; and a boss structure is designed in the flame tube, the flame tube can be partitioned, flames can be quenched to the mild combustion area from an fuel-rich combustion area rapidly,emission of nitric oxide is reduced, and the stable combustion of the fuel in the flame tube is achieved.

Description

technical field [0001] The invention belongs to the technical field of gas turbine energy utilization and pollution control, and in particular relates to a soft gas turbine combustion chamber. Background technique [0002] As an important heat-to-power conversion device, gas turbines are increasingly widely used in aviation, navigation and other fields, and have an irreplaceable role and status in national economy and national defense construction. The improvement of the gas turbine cycle efficiency mainly depends on the increase of the exhaust temperature of the combustion chamber, and the contradiction is that the emission of nitrogen oxides in the combustion chamber will also increase with the increase of the exhaust temperature, and the working environment of the combustion chamber of the gas turbine is also very Harsh, such as high internal pressure in the combustion chamber, large heat load, high temperature and high speed, and complex flow field. Therefore, ensuring t...

AI Technical Summary

Problems solved by technology

The improvement of the gas turbine cycle efficiency mainly depends on the increase of the exhaust temperature of the combustion chamber, and the contradiction is that the emission of nitrogen oxides in the combustion chamber will also increase with the increase of the exhaust temperature, and the working environment of the combustion chamber of the gas turbine is also very Harsh, such as high internal pressure in the combustion chamber, large heat load, high temperature and high speed, and complex flow field. Therefore, ensuring the high combustion efficiency of the combustion chamber to improve the performance of the gas turbine is the problem and difficulty that the gas turbine needs to solve at this stage

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