Gas turbine combustor with active fuel distribution control function

Abstract

Disclosed is a gas turbine combustor with an active fuel distribution control function. The gas turbine combustor comprises an end cover, a fixing plate and a fuel distribution control unit. The fuel distribution control unit comprises a motor, a transmission mechanism and a rotating plate. The end cover is fixedly connected with the fixing plate, and an internal cavity is formed between the end cover and the fixing plate. The fixing plate is provided with K positioning holes located at a first circumference, and a main fuel tube is arranged in each positioning hole. The motor is arranged outside the end cover. The rotating plate is arranged in the internal cavity. The motor is connected with the rotating plate through the transmission mechanism. The rotating plate is provided with m groups of allocation holes located at a second circumference. The numbers Qi of the allocation holes in the groups are different, and Qi is smaller than or equal to K. The motor drives the rotating plate to rotate so that the i group of allocating holes can be aligned with the Qi main fuel tube, and accordingly Qi main fuel channels are formed. According to the gas turbine combustor, different numbers of main fuel channels are formed on different load conditions, so that the combustion stability of the combustor is guaranteed and the pollution emission amount is lowered.

Description

technical field [0001] The invention relates to the field of gas turbines, in particular to a gas turbine combustor with the function of actively controlling fuel distribution. Background technique [0002] Combustor, as the core component of gas turbine, its performance index is an important indicator to measure whether the whole gas turbine is advanced. Among them, the performance indicators of the combustion chamber mainly include combustion efficiency, pollutant emission, and combustion stability. In the actual operation process, the power, speed, efficiency and other parameters of the gas turbine will change due to various reasons, which will cause the combustion chamber to deviate from the design working conditions, and cause the combustion chamber to increase pollutant emissions, reduce combustion efficiency, and change combustion stability. Bad question. [0003] At present, in gas turbines that use natural gas as fuel, it is difficult to design the fuel distributi...

AI Technical Summary

Problems solved by technology

In the micro gas turbine, because it can only control the overall fuel distribution, when the combustion chamber is running at low load, the fuel injection velocity decreases, the residence time increases, the concentration of unburned hydrocarbon fuel and CO increases, the combustion efficiency decreases, and the stability become worse, which will bring safety hazards to the stable operation of the combustion chamber

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