Transition channel between two turbine stages
AssigneeSnecma
InventorsJean-Michel Guimbard, Philippe Jean-Pierre Pabion, Eric Schwartz, Jean-Luc Soupizon
Life of this patent
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Abstract
A transition channel between a first turbine section and a second turbine section for a gas turbine engine is disclosed. The channel includes a first radially external annular wall including ring sector elements housed inside an annular ring and orifices for injecting a fluid into the channel in order to re-energize the boundary layer thereof, a second radially internal annular wall, and a fluid supply device arranged between the space outside the ring and the injection orifices.
Claims12
A transition channel between a first turbine section and a second turbine section for a gas turbine engine, comprising:
- a first radially external annular wall including ring sector elements housed inside an annular ring and orifices which inject a fluid into the channel in order to re-energize a boundary layer of the channel;
- a second radially internal annular wall;
- and
- a fluid supply device arranged between a space outside the ring and said injection orifices,
- wherein an upstream end of the ring presses against a flange of a casing of the first turbine section via a seal and a downstream end of the ring is held by a tongue and groove fastener attached to the casing of the first turbine section, and
- wherein the first wall includes an axial flange which cooperates with a groove in a bearing surface disposed on the ring between the upstream end and the downstream end of the ring.
A transition channel between a first turbine section and a second turbine section for a gas turbine engine, comprising:
- a first radially external annular wall including ring sector elements housed inside an annular ring and orifices which inject a fluid into the channel in order to re-energize a boundary layer of the channel;
- a second radially internal annular wall;
- and
- a fluid supply device arranged between a space outside the ring and said injection orifices,
- wherein the supply device includes openings arranged in the annular ring, cavities arranged in the ring sectors forming the first wall and communicating with the injection orifices, and connecting tubes fitted between said openings and said cavities.
Dependencies are inferred from the claim text.