US 11,781,753 B2
Combustor dome-deflector and liner having flexible connections
Ravindra Shankar Ganiger, Bengaluru (IN); Hiranya Nath, Bengaluru (IN); Sripathi Mohan, Bengaluru (IN); and Girish Kamath Cannanore, Bengaluru (IN)
Assigned to GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Jun. 29, 2022, as Appl. No. 17/809,629.
Claims priority of application No. 202211010656 (IN), filed on Feb. 28, 2022.
Prior Publication US 2023/0272912 A1, Aug. 31, 2023
Int. Cl. F23R 3/00 (2006.01); F23R 3/60 (2006.01); F23R 3/50 (2006.01); F23M 5/04 (2006.01)
CPC F23R 3/60 (2013.01) [F23M 5/04 (2013.01); F23R 3/002 (2013.01); F23R 3/50 (2013.01); F23R 2900/00014 (2013.01); F23R 2900/00017 (2013.01); F23R 2900/03044 (2013.01)] 13 Claims
OG exemplary drawing
 
2. A combustor for a gas turbine, the combustor comprising:
a dome;
a deflector connected to the dome to define a baffle cavity therebetween, the deflector having a deflector cold side adjacent to the baffle cavity and a deflector hot side adjacent to a combustion chamber; and
at least one dome-deflector connecting member connecting the dome and the deflector to each other,
wherein the at least one dome-deflector connecting member comprises at least one coupler connected to the dome at a first end of the coupler and connected to the deflector at a second end of the coupler, and
wherein the at least one coupler includes a hollow cylindrical middle section between the first end of the coupler and the second end of the coupler, the hollow cylindrical middle section being unthreaded and defining a hollow cavity within the at least one coupler, a helical serration formed through the hollow cylindrical middle section along a length of the hollow cylindrical middle section so as to define a heli-coil structure, and
wherein the hollow cavity is in fluid communication with the baffle cavity via the helical serration.
 
13. A combustor for a gas turbine, the combustor comprising:
a dome;
a deflector connected to the dome to define a baffle cavity therebetween, the deflector having a deflector cold side adjacent to the baffle cavity and a deflector hot side adjacent to a combustion chamber;
at least one dome-deflector connecting member connecting the dome and the deflector to each other; and
a combustor liner including a combustor liner shell and a combustor liner panel connected to the combustor liner shell to define a baffle cavity therebetween, the combustor liner panel being connected to the combustor liner shell via at least one shell-to-panel connecting member at a joint, the at least one shell-to-panel connecting member forming a joint between the combustor liner shell and the combustor liner panel,
wherein the at least one shell-to-panel connecting member includes (a) a first ripple-shaped washer having a first washer center opening therethrough, and having a first washer radially outer flange, and (b) a second ripple-shaped washer having a stud extending from a center of the second ripple-shaped washer, and having a second washer radially outer flange, the second ripple-shaped washer being joined to the combustor liner panel, the stud extending through the first washer center opening, the second washer radially outer flange engaging with a hot side of the combustor liner shell, and the first washer radially outer flange engaging with a cold side of combustor liner shell, and
wherein the first ripple-shaped washer includes cooling openings therethrough for providing a cooling airflow to a cold side of the second ripple-shaped washer, and the second ripple-shaped washer includes cooling openings therethrough for providing an impingement cooling airflow to impinge against the cold side of the combustor liner panel.