GAS TURBINE PLANT COMBUSTION DEVICE Russian patent published in 2021 - IPC F23R3/28 

FIELD: gas turbine plants.

SUBSTANCE: present invention is designed to suppress the occurrence of combustion fluctuations in a combustion apparatus of a lean burn gas turbine plant and to improve structural reliability. The combustion device of the gas turbine plant includes: a cylindrical flame tube forming a combustion chamber; and a burner having an air hole plate that is located at the inlet of the flame tube and has a plurality of air holes for directing compressed air into the combustion chamber, and a plurality of fuel injectors that are located on the side opposite the combustion chamber with an air hole plate located between them, each of a plurality of fuel injectors injecting fuel towards a corresponding air hole, the air holes and the fuel injectors forming a plurality of concentric annular lines, a restriction hole is provided in the fuel flow path of each of the plurality of fuel injectors, the plurality of fuel injectors being grouped into a plurality of nozzle groups, and the axial positions of the restriction holes differ between the nozzle groups.

EFFECT: cmbustion fluctuations supressed, reliability improved.

5 cl, 11 dwg