Cooling circuit for gas turbine fixed ring
First Claim
1. A stationary ring surrounding a hot gas passage of a gas turbine, the ring being surrounded by a stationary annular housing so as to co-operate therewith to define an annular cooling chamber into which there opens out at least one cooling air feed orifice, the ring comprising:
- a plurality of ring segments, wherein each ring segment includes a top internal cooling circuit and a bottom internal cooling circuit, the bottom cooling circuit being independent of the top cooling circuit, and being radially offset relative to the top cooling circuit, and the bottom cooling circuit including at least one cooling air feed orifice leading from the cooling chamber,wherein said top cooling circuit includes at least one cooling air feed orifice leading from said cooling chamber.
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Accused Products
Abstract
A stationary ring surrounding a hot gas passage in a gas turbine, the ring being surrounded by a stationary annular housing co-operating therewith to define an annular cooling chamber into which there opens out at least one cooling air feed orifice. The ring is made up of a plurality of ring segments, each ring segment including a top internal cooling circuit and a bottom internal cooling circuit. The bottom cooling circuit is independent of the top cooling circuit and is radially offset relative to the top cooling circuit.
44 Citations
13 Claims
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1. A stationary ring surrounding a hot gas passage of a gas turbine, the ring being surrounded by a stationary annular housing so as to co-operate therewith to define an annular cooling chamber into which there opens out at least one cooling air feed orifice, the ring comprising:
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a plurality of ring segments, wherein each ring segment includes a top internal cooling circuit and a bottom internal cooling circuit, the bottom cooling circuit being independent of the top cooling circuit, and being radially offset relative to the top cooling circuit, and the bottom cooling circuit including at least one cooling air feed orifice leading from the cooling chamber, wherein said top cooling circuit includes at least one cooling air feed orifice leading from said cooling chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A stationary ring surrounding a hot gas passage of a gas turbine, the ring being surrounded by a stationary annular housing so as to co-operate therewith to define an annular cooling chamber into which there opens out at least one cooling air feed orifice, the ring comprising:
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a plurality of ring segments, wherein each ring segment includes a top internal cooling circuit and a bottom internal cooling circuit, the bottom cooling circuit being independent of the top cooling circuit, and being radially offset relative to the top cooling circuit, and the bottom cooling circuit including at least one cooling air feed orifice leading from the cooling chamber, wherein the bottom circuit cooling of each ring segment comprises; at least one first internal cavity extending axially between upstream and downstream transverse walls of the ring segment and disposed besides one of first and second longitudinal walls of the ring segment; at least one second internal cavity extending axially between the upstream and downstream transverse walls of the ring segment and being circumferentially offset relative to the first cavity; at least one third internal cavity extending axially between the upstream and downstream transverse walls of the ring segment and being circumferentially offset relative to the second cavity; at least one fourth internal cavity extending axially between the upstream and downstream transverse walls of the ring segment and being circumferentially offset relative to the third cavity; at least first and second cooling air feed orifices leading from the cooling chamber into the second and third cavities respectively to feed the second and third cavities; at least first and second passages putting respectively the second cavity into communication with the first cavity, and putting the third cavity into communication with the fourth cavity; a plurality of first outlet holes leading from the first cavity into the hot gas passage through the first longitudinal wall of the ring segment beside which the first internal cavity is disposed; and a plurality of second outlet holes leading from the fourth cavity into the hot gas passage through the second longitudinal wall of the ring segment. - View Dependent Claims (12, 13)
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Specification