DEVICE FOR FUEL COMBUSTION IN GAS TURBINE ENGINE Russian patent published in 2018 - IPC F23R3/26 

FIELD: turbine construction.

SUBSTANCE: invention relates to the turbine construction, in particular to devices for fuel combustion, and can be used in the main combustion chambers (MCC) of gas turbine engines. Technical result of the invention is reduced unevenness of the temperature field in the output section of the MCC in axial and radial directions, reduced required length, possibility of cooling the outer and inner housings of the combustion chamber by providing a symmetric flow in the circumferential and radial directions, as well as intensifying the mixing processes of the primary and secondary flows, by introducing an expanding channel in front of the annular cavity in which the flow screen separators are installed, together with the angle stabilizer, which are movable in the axial direction. Invention differs from the known ones in that the device for separating the working medium is installed in front of the annular cavity and consists of the outer and inner shells, the outer and inner flow screen separators, outer shell is a body of rotation with respect to the longitudinal axis of the engine, the output diameter of which is equal to the diameter of the outer shell, and the input and output diameters are selected in the ratio 0.7…0.9, the inner shell is a body of rotation with respect to the longitudinal axis of the engine, the output diameter of which is equal to the diameter of the inner shell, and the input and output diameters are selected in the ratio 1.1…1,4, the inner and outer shells are connected to each other by N-type power plates ≥ 3, where N is a natural number, located in the radial direction and extending at 1/3 of the depth of the annular cavity, as well as on the power plates there are slots in the axial direction, the outer and inner flow screen separators are movable along the longitudinal axis of the engine along the slots of the power plates and are made in the form of a sector of the body of rotation with respect to the longitudinal axis of the engine, bounded by nearby longitudinal power plates, input diameter of the outer flow screen separator refers to the input diameter of the outer shell in the ratio 0.95…0.7, and the output and input diameters are selected in the ratio 1.1…1.4, the input diameter of the inner flow screen separator refers to the input diameter of the inner shell in a ratio of 1.05…1.3, and the output and input diameters are selected in the ratio 0.7…0.9, the angular flame stabilizer is made in the form of a sector of the body of rotation with respect to the longitudinal axis of the engine bounded by the nearby longitudinal power plates and is installed between the flow screen separators, movable along the longitudinal axis of the engine along the slots of the power plates.

EFFECT: technical result of the invention is reduced unevenness of the temperature field in the output section of the MCC in axial and radial directions, reduced required length, cooling the outer and inner housings of the combustion chamber.

1 cl, 3 dwg