COMBUSTION CHAMBER AND GAS TURBINE ENGINE COMPRISING SUCH COMBUSTION CHAMBER Russian patent published in 2020 - IPC F23R3/12 

FIELD: fuel combustion devices.

SUBSTANCE: burner includes a cavity distributing fuel to fuel nozzles. Cavity is confined by groove formed in structural material of burner to create level difference in hole, and cover installed in level difference for groove closing. Cover is formed by a crosspiece closing hole in groove, and flange, continuing in direction of depth of groove for installation in level difference, and is welded to the structural material so as to provide an L-shaped cross-section. If seen in cross section perpendicular to groove, inner surface on cover side, which is inner surface of flange forming side surface of cavity, is at same level with inner surface on side of groove, which is internal surface of groove forming lateral surface of cavity. Boundary between inner surface on cover side and inner surface on groove side is at a distance from first cavity angle, located between inner surface on cover side and inner surface of crosspiece, which forms ceiling surface of cavity.

EFFECT: present invention reduces heat stress exerted on welding zone of cavity formed in burner structural material.

8 cl, 9 dwg