US 6,305,904 B1Granted

Coolable component

AssigneeABB Alstom Power (Schweiz) AG

InventorsBernhard Weigand, Klaus Semmler

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Abstract

Pins (23) consisting of a material having high thermal conductivity are introduced, alternately with blow-out orifices (22) for a coolant (9), into the material, to be cooled, of a component (141), in such a way that said pins project out of the component on the cooling side (12) of the latter. These pins are cooled in the region which projects out of the component whilst heat is supplied to them in the region which is embedded in the component. The alternating arrangement with blow-out orifices ensures that the flow (7) passes around the pins. This point is important particularly when the pins are arranged in a narrow gap, such as occurs especially in the cooling of the trailing edges of gas turbine blades. The necessary number of blow-out orifices and therefore the coolant consumption is reduced.

Claims13

Dependent claims

A coolable component, comprising:

a first material;
a hot-gas side, said hot-gas side being in contact with a first flowing medium during operation;
a cold-gas side, said cold-gas side being in contact with a second flowing medium during operation;
the temperature of the first flowing medium being higher than that of the second flowing medium, such that the component is heated by the first flowing medium and cooled by the second flowing medium, during operation;
a plurality of pins surrounded by the first material of the component, said pins projecting out of the cold-gas side into the flow of the second flowing medium, during operation and comprising a material with a higher thermal conductivity than that of the first material used for producing the component, such that, during operation, the pins act as heat sinks in the first material;
a plurality of blow-out orifices, through which, during operation, at least part of said second flowing medium flows from the cold-gas side to the hot-gas side, such that the blow-out orifices likewise act as heat sinks, and wherein at least one pin and at least one orifice are in each case arranged alternately along at least one line at the cold-gas side.

3 more elements

Dependencies are inferred from the claim text.