Turbine blade and gas turbine including the same
AssigneeDoosan Enerbility Co., Ltd.
InventorGyeong Mo NAM
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a turbine blade having a leading edge, a trailing edge, a pressure side, and a suction side and having a cooling passage formed therein. The turbine blade includes a plurality of cooling holes formed on the pressure side or the suction side. Each of the cooling holes includes, a through-hole having a circular cross-section and angled outwardly toward the pressure side or the suction side from the cooling passage, a circular sink formed concavely with respect to the pressure side or the suction side in the vicinity of an upstream side of an exit of the through-hole, and an elliptical sink formed concavely with respect to the pressure side or the suction side in the vicinity of a downstream side of the exit of the through-hole.
Claims18
A turbine blade having a leading edge, a trailing edge, a pressure side, and a suction side and having a cooling passage formed therein, the turbine blade comprising:
- a plurality of cooling holes formed on the pressure side or the suction side, wherein each of the cooling holes comprises:
- a through-hole having a circular cross-section and angled outwardly toward the pressure side or the suction side from the cooling passage;
- a circular sink formed concavely with respect to the pressure side or the suction side and located in a first position that includes an upstream side of an exit of the through-hole;
- and
- an elliptical sink formed concavely with respect to the pressure side or the suction side and located in a second position that includes a downstream side of the exit of the through-hole,
- wherein an upstream edge of the circular sink where the circular sink meets an upstream surface has an upstream end to located relatively more upstream than the upstream side of the exit of the through-hole.
A gas turbine comprising:
- a compressor configured to suck and compresses outside air;
- a combustor configured to mix fuel with the air compressed by the compressor to burn a mixture thereof;
- and
- a turbine having turbine blades mounted in a turbine casing, the turbine blades being rotated by combustion gas discharged from the combustor,
- wherein each of the turbine blades comprises a plurality of cooling holes formed on a pressure side or a suction side, and
- wherein each of the cooling holes comprises:
- a through-hole having a circular cross-section and angled outwardly toward the pressure side or the suction side from a cooling passage;
- a circular sink formed concavely with respect to the pressure side or the suction side and located in a first position that includes an upstream side of an exit of the through-hole;
- and
- an elliptical sink formed concavely with respect to the pressure side or the suction side and located in a second position that includes a downstream side of the exit of the through-hole,
- wherein an upstream edge of the circular sink where the circular sink meets an upstream surface has an upstream end located relatively more upstream than the upstream side of the exit of the through-hole.
Dependencies are inferred from the claim text.