Diffuser air flow distribution intelligent adjusting system and working method thereof

Abstract

The invention discloses a diffuser air flow distribution intelligent adjusting system and a working method thereof, and belongs to the field of combustion of gas turbines. The method mainly comprises a set of mechanical structure and a set of control algorithm, a control terminal calculates the fuel flow required by the current working condition according to parameters such as pressure and temperature of an inlet of a combustion chamber, and the fuel flow is adjusted according to the corresponding relation between the fuel adjusting rule calibrated in advance and the opening and closing angle of an inner/outer ring adjusting plate. The opening angle of the adjusting plate required under the current working condition is calculated and converted into an adjusting signal of a hydraulic system, the hydraulic principle is used for controlling the opening and closing movement of the adjusting plate along the hinge structure, and therefore the air flow proportion entering the main combustion area of the flame tube is changed, it is guaranteed that the main combustion area of the flame tube combusts under the designed oil-gas ratio under all the working conditions, and the combustion efficiency is improved. And intelligent combustion is realized. According to the system and method, the stable combustion boundary of the combustion chamber can be obviously widened, the combustion efficiency under different working conditions is improved, and emission of pollutants is reduced.

Description

technical field [0001] The invention belongs to the field of gas turbine combustion, and relates to a diffuser air flow distribution intelligent adjustment system and a working method thereof. Background technique [0002] The development of gas turbine technology requires more and more stringent requirements for its combustion performance, ignition boundary, pollutant emission, etc., and the oil-gas ratio in the main combustion area at the head of the combustion chamber has a great impact on the above performance. Intelligent combustion regulation The continuous development of technology provides a new development direction for the gas turbine combustor. [0003] For the gas turbine combustor, its fuel supply varies with operating conditions. In small working conditions, the required fuel supply is smaller; when the engine needs to increase thrust or power output, the required fuel supply increases. In the general gas turbine combustion chamber, the relative positions and...

AI Technical Summary

Problems solved by technology

Therefore, as the working conditions of the gas turbine change, the change of the fuel flow will cause the fuel-gas ratio in the main combustion zone of the flame tube to be lean or rich in different degrees, which will have a great impact on the combustion stability, combustion efficiency and pollutant emissions. Impact

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