Blending hole adjustment system and method for adjusting combustion chamber outlet temperature distribution

Abstract

The invention discloses a mixing hole adjustment system and method for adjusting the outlet temperature distribution of a combustion chamber, belonging to the field of gas turbine combustion; when the thrust is high, because the inlet temperature of the turbine guide is relatively high, the control terminal is based on the previously calibrated combustion chamber The corresponding relationship between the total pressure of the inlet air and the spatial attitude angle of the telescopic mixing hole is used to calculate the required spatial position of the telescopic mixing hole under the current working condition, and convert it into a hydraulic adjustment signal and transmit it to the mechanical structure. Rod and rotating rod, the insertion depth of the telescopic mixing hole is controlled by the extension of the telescopic rod, and the rotation angle of the mixing hole is controlled by the expansion and contraction of the rotating rod. The mutual cooperation of the two can change the jet penetration of the mixing hole The depth and jet inclination angle can achieve the purpose of adjusting the outlet temperature distribution of the combustion chamber, greatly increasing the service life of the turbine guide and reducing the design requirements of the turbine guide.

Description

technical field [0001] The invention belongs to the field of gas turbine combustion, and relates to a mechanical adjustment system for adjusting the outlet temperature distribution of a combustion chamber, in particular to a mixing hole adjustment system and method for adjusting the outlet temperature distribution of a combustion chamber. Background technique [0002] At present, due to the higher and higher performance requirements of the gas turbine combustor, the gas turbine is developing towards high temperature and high pressure, resulting in higher and higher temperature at the front inlet of the turbine. However, due to the limitations of the heat resistance and fatigue resistance of the material, if the temperature distribution at the outlet of the combustion chamber is poor in large operating conditions, local hot spots / high temperature hot spots will appear, which will directly lead to the ablation of the turbine guide. Moreover, the The ablation phenomenon is gene...

AI Technical Summary

Problems solved by technology

After the structure of the combustion chamber is determined, the proportion of flow distribution at each position is fixed under any working condition, and the jet penetration depth of each mixing hole is also relatively constant. When the temperature distribution at the outlet of the combustion chamber is unreasonable, the Repeated and sustained high temperatures on one radius of the turbine causing turbine guide / bucket ablation

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