US 11,946,645 B2
Combustor casing component for a gas turbine engine
Lloyd D. Morson, Bristol (GB); and Julien Digoude, Bristol (GB)
Assigned to Rolls-Royce plc, (GB)
Filed by ROLLS-ROYCE plc, London (GB)
Filed on Jul. 10, 2023, as Appl. No. 18/349,275.
Claims priority of application No. 2210143 (GB), filed on Jul. 11, 2022.
Prior Publication US 2024/0011636 A1, Jan. 11, 2024
Int. Cl. F23R 3/60 (2006.01); F01D 9/04 (2006.01); F01D 25/24 (2006.01); F23R 3/00 (2006.01)
CPC F23R 3/60 (2013.01) [F01D 9/044 (2013.01); F01D 25/24 (2013.01); F23R 3/002 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A single-piece combustor casing component for a gas turbine engine, the single-piece combustor casing component comprising:
a combustor outer casing portion;
an outlet guide vane outer case portion;
a pre-diffuser portion;
a plurality of outlet guide vanes; and
an outlet guide vane inner case portion, further comprising an end surface, the end surface including a plurality of blind holes for receiving connectors,
wherein the combustor outer casing portion comprises one or more axial ribs, and at least one of the plurality of blind holes is radially aligned with an axial rib,
wherein the one or more axial ribs are on at least one of an external surface or an internal surface of the combustor outer casing portion,
wherein the combustor outer casing portion has one or more axial ribs on both the internal and external surfaces, and each axial rib on the external surface is radially aligned with a respective axial rib on the internal surface.
 
2. A single-piece combustor casing component for a gas turbine engine, the single-piece combustor casing component comprising:
a plurality of outlet guide vanes;
an outlet guide vane outer support coupled to a radially outward most end of the plurality of outlet guide vanes;
a pre-diffuser portion coupled to and extending axially aft from an aft end of the outlet guide vane outer support, the pre-diffuser portion defining a flow path outlet at a radially outward most end of the pre-diffuser portion, the radially outward most end of the pre-diffuser portion being aft of a forward most end of the pre-diffuser portion;
an outlet guide vane outer case portion coupled to and extending axially forward from the radially outward most end of the pre-diffuser portion;
a combustor outer casing portion, an axially forward most end of the combustor outer casing portion coupled to and extending axially aft from a radially outward most end of the outlet guide vane outer case portion, an axially aft most end of the combustor outer casing configured to connect to a turbine nozzle guide vane support structure; and
an outlet guide vane inner case portion,
wherein the combustor outer casing portion, the outlet guide vane outer case portion, and the pre-diffuser portion form an ‘S’-shaped profile to act as a spring section and allow the single-piece combustor casing component to flex during thermal expansion.