Combustion oscillation control device and method and combustion chamber

Abstract

The invention provides a combustion oscillation control device and method and a combustion chamber. The combustion oscillation control device comprises a control casing; an adjustable channel mechanism and an adjustable acoustic resonator are arranged in the control casing, and an adjustable pore plate is arranged between the adjustable channel mechanism and an outlet and in the control casing; and the adjustable channel mechanism comprises a blocking part and a channel part, the blocking cross section of the blocking part in the radial direction of the control casing is adjustable, the channel length of the channel part in the axial direction of the control casing is adjustable, and the position of the adjustable pore plate in the axial direction of the control casing is adjustable. The device is installed at the outlet of the combustion chamber, the amplitude and frequency of combustion oscillation of the combustion chamber are adjusted by comprehensively regulating and controlling the sectional area and the length of the outlet of the combustion chamber, the intensity of the resonator and various parameters of the sound boundary of the outlet of the combustion chamber, expected control over the amplitude and frequency of combustion oscillation of the combustion chamber is achieved, different amplitudes of combustion oscillation under different frequencies can be regulated and controlled, and corresponding experimental studies can be developed.

Description

technical field [0001] The invention relates to the technical field of energy and power, in particular to a combustion oscillation control device, method and combustion chamber. Background technique [0002] Combustion of fossil fuels is still one of the main ways to obtain energy and power today, and gas turbines are one of the important equipment in the field of energy and power today, and are widely used in industries such as aviation, navigation and power generation. Among them, the gas turbine combustor is the core component and power source of the entire gas turbine. However, with the increasingly stringent pollutant emission requirements, in order to reduce the emission of pollutants mainly nitrogen oxides (NOx), advanced low-emission combustion chambers mostly use lean oil premixed combustion technology, and the combustion chambers are often close to flameout. It runs under working conditions, so it is very sensitive to external disturbances, and is easily affected ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a combustion oscillation control device, method and combustion chamber to solve the defect in the prior art that it is difficult to effectively control combustion oscillation due to the fixed structure of the combustion chamber , to achieve the purpose of effectively regulating the combustion oscillation mode and the intensity of combustion oscillation in the combustion chamber

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