US 12,130,015 B2
Combustion chamber with wall cooling
David Larsson, Linkoping (SE); Daniel Lörstad, Ostergotland (SE); Frank Rubensdorffer, Finspang (SE); Magnus Sundholm, Dals Rostock (SE); and Simon Svanström, Norrköping (SE)
Assigned to Siemens Energy Global GmbH & Co. KG, Munich (DE)
Appl. No. 17/773,082
Filed by Siemens Energy Global GmbH & Co. KG, Munich (DE)
PCT Filed Oct. 2, 2020, PCT No. PCT/EP2020/077649
§ 371(c)(1), (2) Date Apr. 29, 2022,
PCT Pub. No. WO2021/115658, PCT Pub. Date Jun. 17, 2021.
Claims priority of application No. 19214894 (EP), filed on Dec. 10, 2019.
Prior Publication US 2024/0142104 A1, May 2, 2024
Int. Cl. F23R 3/50 (2006.01); F23R 3/00 (2006.01); F23R 3/60 (2006.01)
CPC F23R 3/005 (2013.01) [F23R 3/002 (2013.01); F23R 3/50 (2013.01); F23R 3/60 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A combustion chamber of a gas turbine with an annular combustion plenum surrounding a rotor-axis, wherein a number of burners is arranged intentional at the upstream side of the combustion chamber and an expansion turbine with a turbine inlet is arranged intentional at the downstream side of the combustion chamber, comprising:
an inner component, which is surrounding the rotor-axis at a radial inner side of the combustion plenum and which comprises an inner chamber wall adjacent to the combustion plenum and an inner end wall arranged next to the turbine inlet extending in a radial direction and an inner air guidance piece arranged at a distance from the inner chamber wall with an inner cooling channel in-between, wherein a distance of the inner air guidance piece to the inner end wall is at least 0.5-times and at most 2-times a lowest width of the inner cooling channel,
wherein the inner chamber wall is connected to the inner end wall with an inner corner without any protrusion,
wherein the inner corner is a continuously curved connection between the inner chamber wall and a downstream facing surface of the inner end wall, the inner corner also bounds the inner cooling channel, and the inner corner is fluid tight, and
wherein a greatest thickness of the inner corner is at most 1.2 times a lowest thickness of the inner chamber wall in an area of the inner air guidance piece.