Cooled flow deflection apparatus for a fluid-flow machine which operates at high temperatures
First Claim
1. A cooled flow deflection apparatus for a fluid-flow machine which operates at high temperatures, which flow deflection apparatus has a leading edge and a trailing edge and an interior defined between the leading edge and the trailing edge, a number of parallel-running cooling channels formed in the interior, which are separated from one another by separating walls for a cooling fluid to pass through, wherein the separating walls are in the form of separate inserts which can be pushed into the flow deflection apparatus subsequently;
- the cooling fluid flows in mutually opposite directions in two adjacent cooling channels, the cooling fluid being deflected from the outlet of the one cooling channel into the inlet of the other cooling channel by means of a deflection device, and the deflection being produced by a separating wall which is bent into a U-shape; and
the separate inserts being spaced apart from each other successively from the leading edge to the trailing edge and defining at least one path through the interior from the leading edge to the trailing edge.
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Accused Products
Abstract
Apparatus is disclosed for providing cooling channels in the interior of a gas turbine rotor blade. The cooling channels are formed by metallic inserts which extend from adjacent the root of the blade toward the tip. The inserts are substantially flat and are secured in the interior of the airfoil section by means of rails which engage the longitudinal edges of the inserts and serve as a guide during insertion. The rails are preferable formed integrally with the blade casting.
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Citations
14 Claims
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1. A cooled flow deflection apparatus for a fluid-flow machine which operates at high temperatures, which flow deflection apparatus has a leading edge and a trailing edge and an interior defined between the leading edge and the trailing edge, a number of parallel-running cooling channels formed in the interior, which are separated from one another by separating walls for a cooling fluid to pass through, wherein the separating walls are in the form of separate inserts which can be pushed into the flow deflection apparatus subsequently;
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the cooling fluid flows in mutually opposite directions in two adjacent cooling channels, the cooling fluid being deflected from the outlet of the one cooling channel into the inlet of the other cooling channel by means of a deflection device, and the deflection being produced by a separating wall which is bent into a U-shape; and
the separate inserts being spaced apart from each other successively from the leading edge to the trailing edge and defining at least one path through the interior from the leading edge to the trailing edge. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A gas turbine blade comprising an airfoil section and a blade root, the interior of the blade having a plurality of cooling channels separated from each other by separating walls, the blade having a leading edge and a trailing edge and the interior of the blade having rails, the separating walls being in the form of separate inserts engaging the rails and being supported thereby;
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cooling fluid flows in mutually opposite directions in two adjacent cooling channels, the cooling fluid being deflected from the outlet of the one cooling channel into the inlet of the other cooling channel by means of a deflection device, and the deflection being produced by a separating wall which is bent into a U-shape; and
the separate inserts being spaced apart from each other successively from the leading edge to the trailing edge and defining at least one path through the interior from the leading edge to the trailing edge. - View Dependent Claims (9, 10)
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11. A gas turbine blade comprising a metallic casting in the shape of a blade having a blade airfoil section and a blade root, the casting having a hollow space in the interior of the airfoil section, and the airfoil section having a leading edge and a trailing edge, cooling channels in the hollow space arranged for receiving a cooling fluid from the blade root and directing the cooling fluid toward the tip of the airfoil section, the cooling channels including a plurality of inserts in the interior of the airfoil section, the inserts being secured by holders in the hollow interior of the airfoil section;
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the cooling fluid flows in mutually opposite directions in two adjacent cooling channels, the cooling fluid being deflected from the outlet of the one cooling channel into the inlet of the other cooling channel by means of a deflection device, and the deflection being produced by an insert which is bent into a U-shape; and
the separate inserts being spaced apart from each other successively from the leading edge to the trailing edge and defining at least one path through the interior from the leading edge to the trailing edge. - View Dependent Claims (12, 13, 14)
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Specification