ANNULAR COMBUSTION CHAMBER Russian patent published in 2024 - IPC F23R3/28 F23R3/46 

FIELD: engines.

SUBSTANCE: invention relates to stationary gas turbine engines used in ground conditions in shipbuilding, at gas pumping stations as a pump drive and for peak power plants as an electric generator drive. Annular combustion chamber consists of external (1) and internal (2) housing, diffuser (3), fuel supply manifold (4), flame tube (5), including external (6) and internal (7) rings, consisting of three sections with two rows of holes for air supply, outer (8) and inner (9) casings, consisting of two sections, inner (10) and outer (11) pockets, sealing rings (12), retainers (13) for suspension of flame tube (5), fuel injectors (14). Front device (15) of flame tube (5) comprises annular head (16) with external (17) and internal (18) fuel manifolds, by union (19) of the gas supply into the inner cavity of external (17) manifold, fixed by means of feedthrough (20) and insert (21) installed in sleeve (22), uniformly arranged in two rows by shaped air supply openings (23), with central holes (24) for installation of fuel injectors (14) to annular head (16) by means of castellated nut (25). External (6) and internal (7) rings of flame tube (5) consist of two sections with three rows of holes for air supply, external (8) and internal (9) casings consist of one section, volume of flame tube (5) reduced by 40 %. Diffuser (3) has detachable levelling section with transition to smooth expansion, external pockets (11) are turned against the main flow and have the same design with internal pockets (10). Blades (27) of swirler (28) of the upper row of fuel injectors (14) relative to blades (27) of swirler (28) of the lower tier of fuel injectors (14) are twisted in the opposite direction. Feedthrough (20) is installed in gas supply union (19) using a threaded connection, sealing ring (29) is located in the joint between them. On the cylindrical part of feedthrough (20), inserts (21) of a hemispherical shape are put, placed in floating bushings (30), which are pressed by a package of disk springs (31) by means of threaded bushing (32) installed in a sleeve located on external housing (1). Fuel feed manifold (4) is connected to feedthrough (20) by means of fuel lines (23), the number of which is selected in the range from four to eight.

EFFECT: disclosed is an annular combustion chamber.

1 cl, 2 dwg