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US 2011/0085894 A1Published application
Gas turbine with a stator blade
AssigneeALSTOM Technology Ltd
InventorsRoland DUECKERSHOFF, Ulrich STEIGER, Ulrich RATHMANN
Life of this patent
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Abstract
A gas turbine with a stator blade is disclosed. The stator blade is fastened on a blade carrier and includes a blade airfoil which extends inwards in the radial direction from an outer platform into a hot gas passage. A cooling medium can flow through an interior of the blade airfoil, such as cooling air, which flows through an access in the blade carrier into a first plenum which is arranged above the outer platform, and from there, via an inlet which is provided in the outer platform, flows into the interior of the blade airfoil.
Claims19
A gas turbine comprising:
- a stator blade fastened on a blade carrier, the stator blade including:
- a blade airfoil which extends inwards in a radial direction from an outer platform into a hot gas passage;
- an access in the blade carrier into a first plenum which is arranged above the outer platform for a cooling medium to flow, via an inlet provided in the outer platform into an interior of the stator blade;
- a first means for controlling cooling-medium pressure in the first plenum;
- and
- a second means for cooling the outer platform by directing the cooling medium from the first plenum.
3 more elements
Dependencies are inferred from the claim text.