Cooled wall
AssigneeBBC Brown, Boveri & Company, Limited
InventorsWilhelm Endres, Dilip Mukherjee
Life of this patent
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Abstract
To improve wall cooling, especially at gas turbine elements, such as buckets or blading, combustion chambers, infeed channels and so forth, it is proposed to arrange a partition wall between an outer plate and an inner plate, for instance formed of sheet metal. The partition wall forms a cooling agent chamber and a pressure equalization chamber. The partition wall preferably consists of a buckle plate whose bulges or protuberances are connected, as by welding, with the outer plate. There is maintained within the pressure equalization chamber a pressure which approximately corresponds to the hot gas pressure at the outer surface of the outer plate, so that there are avoided so-called boiler stresses.
Claims8
A cooled wall, for instance for use with gas turbine elements, comprising:
- an outer plate;
- an inner plate cooperating with said outer plate to enable the flow of a cooling agent therebetween;
- between the outer plate and the inner plate;
- said partition wall forming with respect to the outer plate a cooling agent chamber and with respect to the inner plate a pressure equalization chamber;
- said cooled wall being used at blading of gas turbines;
- said blading essentially comprising a blading core having a flow channel, base plate, cover plate and an outer jacket which encloses in a profile-like fashion the blading core;
- said partition wall being arranged over substantially the entire length of the blading between the outer jacket and the blading core;
- and
- a lining arranged in said flow channel which partially covers an inner surface of said flow channel.
Dependencies are inferred from the claim text.