Mild combustion chamber of gas turbine

Abstract

The invention relates to a mild combustion chamber of a gas turbine. The mild combustion chamber comprises a premixed mild combustor, a first guide shell, a second guide shell, a secondary combustionchamber and a mild combustor on duty. Through array-type distribution of the mild combustors, the space of the mild combustion chamber of the gas turbine is fully utilized, the flue gas reflux ratio is increased, a partial mild combustion condition is easier to establish, and full-zone mild combustion of a combustion zone is realized; by means of radial staging, the requirement of regulation within a wide operating condition range is met; and as the mild combustor on duty, the premixed mild combustor and micro-mixing nozzles are different in axial position, axial staging of combustion is realized; the load regulation requirement is met; the uniformity of outlet temperature of the mild combustion chamber of the gas turbine is increased; pressure loss is reduced; full-zone high flue gas reflux ratio of mild combustion is realized; and the requirements of low emission within the wide operating condition range and efficient and stable operation are met.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to a gentle combustion chamber of a gas turbine. Background technique [0002] With the continuous improvement of environmental protection requirements, the emission standards for nitrogen oxides are becoming increasingly stringent. As an important power equipment, the gas turbine should further reduce the emission of nitrogen oxides while continuously increasing the outlet temperature of the combustion chamber to improve the efficiency of the gas turbine. For high parameters and low emission requirements, mainstream combustion technologies are difficult to meet the ever-increasing requirements in the future. Advanced combustion technology has developed rapidly, and soft combustion is one of the most potential technologies. Soft combustion needs to achieve the required high flue gas return ratio through the flow organization of the combustion chamber. It is difficult for a si...

AI Technical Summary

Problems solved by technology

Soft combustion needs to achieve the required high flue gas return ratio through the flow organization of the combustion chamber. It is difficult for a single-stage large-size soft combustion chamber to meet the requirements of flue gas return in all working conditions and areas of the combustion chamber.

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