Device for supporting a turbine ring, turbine having such a device, and turbine engine having such a turbine
First Claim
1. A supporting device for a ring of a gas turbine, the ring configured to enclose moving blades of the turbine driven by a gas flow flowing from upstream to downstream, the device comprising:
- at least one upstream hook, facing upstream, configured to be accommodated in an upstream groove of the ring, which groove is open in the downstream direction;
at least one downstream hook, facing downstream, configured to be accommodated in a downstream groove of the ring, which groove is open in the upstream direction;
a pressurized cavity formed between the upstream hook and downstream hook, the pressurized cavity being supplied with cooling gases; and
at least one of means for injecting cooling gases for cooling the upstream hook positioned upstream of the upstream hook, and means for injecting cooling gases for cooling the downstream hook downstream of the downstream hook;
arranged so that this injection is done without going through the pressurized cavity.
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Accused Products
Abstract
A device for supporting a ring of a gas turbine, the ring configured to surround mobile blades of the turbine which are driven by a gas stream flowing upstream to downstream. The device includes at least one upstream hook facing upstream, to be housed in an upstream groove of the ring, opened toward the downstream direction, and at least one downstream hook facing downstream, to be housed in a downstream groove of the ring, opened toward the upstream direction. The hooks are protected and clearances at apexes of the blades are more easily controlled. The device further includes, upstream from the upstream hook, a mechanism injecting cooling gas to cool the upstream hook and/or includes, downstream from the downstream hook, a mechanism injecting a cooling gas to cool the downstream hook.
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Citations
8 Claims
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1. A supporting device for a ring of a gas turbine, the ring configured to enclose moving blades of the turbine driven by a gas flow flowing from upstream to downstream, the device comprising:
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at least one upstream hook, facing upstream, configured to be accommodated in an upstream groove of the ring, which groove is open in the downstream direction; at least one downstream hook, facing downstream, configured to be accommodated in a downstream groove of the ring, which groove is open in the upstream direction; a pressurized cavity formed between the upstream hook and downstream hook, the pressurized cavity being supplied with cooling gases; and at least one of means for injecting cooling gases for cooling the upstream hook positioned upstream of the upstream hook, and means for injecting cooling gases for cooling the downstream hook downstream of the downstream hook;
arranged so that this injection is done without going through the pressurized cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification