US 12,345,176 B2
Rotor-blade tip including cooling configuration
Björn Anders, Berlin (DE); Constantin Garske, Birkenwerder (DE); Kay Krabiell, Hohen Neuendorf (DE); Heiko Lammers, Leipzig (DE); Markus Lempke, Immenstadt (DE); Ricardo Nilsson, Düsseldorf (DE); and Daniel Vöhringer, Berlin (DE)
Assigned to Siemens Energy Global GmbH & Co. KG, Bayern (DE)
Appl. No. 18/559,046
Filed by Siemens Energy Global GmbH & Co. KG, Bayern (DE)
PCT Filed Apr. 5, 2022, PCT No. PCT/EP2022/059013
§ 371(c)(1), (2) Date Nov. 4, 2023,
PCT Pub. No. WO2022/238051, PCT Pub. Date Nov. 17, 2022.
Claims priority of application No. 10 2021 204 782.3 (DE), filed on May 11, 2021.
Prior Publication US 2024/0229650 A1, Jul. 11, 2024
Int. Cl. F01D 5/18 (2006.01); B23P 6/00 (2006.01); F01D 5/00 (2006.01); F01D 5/20 (2006.01)
CPC F01D 5/187 (2013.01) [B23P 6/007 (2013.01); F01D 5/005 (2013.01); F01D 5/20 (2013.01); F05D 2230/80 (2013.01); F05D 2240/307 (2013.01); F05D 2250/185 (2013.01); F05D 2260/2214 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A turbine blade, comprising:
a blade tip, comprising a first cooling channel and a second cooling channel in a blade airfoil,
wherein the first cooling channel is disposed between a leading edge of the turbine blade and the second cooling channel,
wherein the second cooling channel comprises an inflow limb leading to a reversal region, an outflow limb from the reversal region, and a divider wall between the inflow limb and the outflow limb,
wherein a thickening of an end of the divider wall causes a first narrowing of the second cooling channel at an entrance to the reversal region and a second narrowing of the second cooling channel in the outflow limb,
wherein the second cooling channel comprises at least one outlet opening in the reversal region and through an external wall of the turbine blade,
wherein the at least one outlet opening comprises a discharge opening in an external surface of the external wall,
wherein the at least one outlet opening comprises a conical transition that leads to the discharge opening, and
wherein the discharge opening and the conical transition that leads to the discharge opening are located on the inflow limb side of the divider wall.