Anti-vortex device for a gas turbine engine compressor
First Claim
1. A compressor rotor assembly mounted for rotation about a central axis of a gas turbine engine, comprising an anti-vortex device having a body mounted between adjacent rotor discs, the rotor discs having a peripheral rim surface defining an inner boundary of a primary gas path of the engine, the anti-vortex device defining circumferentially spaced-apart radial passageways extending from respective axially extending central passages to an outer peripheral rim surface of the device, the axially extending central passages being defined in a central solid area of the body of the device, the axially extending central passages being independent from each other and communicating with an associated one of said radial passageways, each said radial passageway receiving bleed air from the primary gas path and directing it to an associated one of said axially extending passages, wherein the axially extending central passages extend axially forwardly and rearwardly from the radial passageways.
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Accused Products
Abstract
An anti-vortex device for use in a compressor rotor assembly of a gas turbine engine is described. Spaced-apart radial passageways extend from an axially extending passage provided in a central area of the device to an outer peripheral rim surface thereof. The radial passageways channel air from the primary gaspath about the rotor assembly to the axially extending passage where the air is directed into a central axial passage of the rotor assembly.
21 Citations
17 Claims
- 1. A compressor rotor assembly mounted for rotation about a central axis of a gas turbine engine, comprising an anti-vortex device having a body mounted between adjacent rotor discs, the rotor discs having a peripheral rim surface defining an inner boundary of a primary gas path of the engine, the anti-vortex device defining circumferentially spaced-apart radial passageways extending from respective axially extending central passages to an outer peripheral rim surface of the device, the axially extending central passages being defined in a central solid area of the body of the device, the axially extending central passages being independent from each other and communicating with an associated one of said radial passageways, each said radial passageway receiving bleed air from the primary gas path and directing it to an associated one of said axially extending passages, wherein the axially extending central passages extend axially forwardly and rearwardly from the radial passageways.
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10. A gas turbine engine comprising a compressor having at least two rotors mounted for joint rotation about a central axis, a combustor and a turbine section;
- the compressor has an anti-vortex device secured between said at least two rotors, the anti-vortex device having a solid body portion, circumferentially spaced-apart radial passageways defined in said solid body portion, each said radial passageway extending from an axial passage extending through the solid body portion in a central area thereof to an outer peripheral rim surface of the solid body portion, the solid body portion defining a solid structural web centrally between the axial passages, the outer peripheral rim surface being spaced inwardly of an air bleed gap formed between said at least two rotors and in communication with a gas path of the engine, the anti-vortex device being configured for channeling air from the gas path in non-interference therewith through said air bleed gap and into said radial passageways and said axial passages, said axial passages extending axially forwardly and rearwardly relative to said associated radial passageways for redirecting said air under pressure in two opposite axial directions.
- View Dependent Claims (11, 12, 13, 14)
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15. A method of reducing total pressure drop and the formation of free vortex in a flow of compressed air bled inwardly from a compressor of a gas turbine engine, the method comprising:
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i) providing circumferentially spaced-apart radial passageways in an anti-vortex drum mounted to the compressor, the radial passageways extending from a plurality of axial passages extending through the anti-vortex drum in a central solid area of the anti-vortex drum to an outer peripheral rim of the anti-vortex drum; ii) bleeding compressed air from a gas path of the compressor through said radial passageways and re-directing said compressed air coming from the radial passageways in two axially opposite directions in said axial passages when said compressor hub is rotating; and iii) directing at least some of the compressed air bled from said axial passages of the anti-vortex drum, via a central axially-extending passage of the compressor, to a turbine section of said gas turbine engine to cool turbine components in said turbine section. - View Dependent Claims (16, 17)
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Specification