Patent EP0181585A2 successfully refreshed from Google Patents.
Patent US3897168A successfully refreshed from Google Patents.
US3897168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbomachine extraction flow guide vanes
Assignee: Westinghouse Electric Corp
•
Filing: 1974-03-05
•
Granted: 1975-07-29
•
Expires: 1994-03-05
Abstract
Abstract A gas turbine compressor comprising a rotor disc has continuous flow bleed vanes attached thereto. The bleed vanes are channel shaped members attached to the downstream side of the rotor disc near its periphery and between adjacent blades. The bleed vanes direct the compressible fluid radially inwardly between the rotor disc and a coolant guide disc attached to the downstream side of the rotor disc. The bleed vanes minimize the difference in tangential velocities of the extraction flow and the rotor disc speed at the inlet region of the continuous bleed system. The extracted fluid is ducted thereafter to a turbine where it is employed for cooling purposes.
Inventors
- 👤 David J Amos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:03
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/321; F04D27/00; F04D27/02; F04D27/0207; F04D27/023
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
214 words
An axial flow compressor having a continuous fluid bleed system including: at least one rotor disc in said compressor; a plurality of generally axially directed grooves on the periphery of said rotor disc; an annular array of radially directed airfoil blades supportively disposed in said grooves; extraction flow guide vane means attached to the side of said rotor disc, said extraction flow guide vane means comprising generally channel shaped members directed radially inwardly, said channel shaped members being attached to the downstream side of said rotor disc, adjacent the periphery of said disc, and disposed between adjacent turbine blades, said generally channel shaped members having generally parallel leg portions, one leg of each channel shaped member being restrained from dislocation by being attached to a wall of one groove on said disc, the other leg of each of said channel shaped members being attached to an adjacent wall of an adjacent groove on said disc, said legs of said channel shaped members being additionally restrained from disloCation by the wedging action of said blades holding said legs between themselves and said walls of said grooves; a coolant flow guide disc attached to the downstream side of said rotor, said coolant flow guide disc guiding the extracted fluid generally radially inwardly adjacent said rotor disc.
Claim 2
Dependent Claim
214 words
An axial flow compressor having a continuous fluid bleed system including: at least one rotor disc in said compressor; a plurality of generally axially directed grooves on the periphery of said rotor disc; an annular array of radially directed airfoil blades supportively disposed in said grooves; extraction flow guide vane means attached to the side of said rotor disc, said extraction flow guide vane means comprising generally channel shaped members directed radially inwardly, said channel shaped members being attached to the downstream side of said rotor disc, adjacent the periphery of said disc, and disposed between adjacent turbine blades, said generally channel shaped members having generally parallel leg portions, one leg of each channel shaped member being restrained from dislocation by being attached to a wall of one groove on said disc, the other leg of each of said channel shaped members being attached to an adjacent wall of an adjacent groove on said disc, said legs of said channel shaped members being additionally restrained from disloCation by the wedging action of said blades holding said legs between themselves and said walls of said grooves; a coolant flow guide disc attached to the downstream side of said rotor, said coolant flow guide disc guiding the extracted fluid generally radially inwardly adjacent said rotor disc.
Claim 3
Dependent Claim
21 words
An axial flow compressor arrangement as recited in claim 1, wherein one generally channel shaped member is disposed between adjacent blades.
Claim 4
Dependent Claim
39 words
An axial flow compressor as recited in claim 1, wherein said leg portions of said channel shaped members are attached to said rotor disc by bending the leg portions to conform to the groove wall and rotor disc configurations.
Claim 5
Dependent Claim
26 words
An axial flow compressor as recited in claim 3, wherein said leg portions of said generally channel shaped members are directed in the generally upstream direction.
Claim 6
Dependent Claim
36 words
An axial flow compressor as recited in claim 4, wherein said generally channel shaped members have downstream wall portions, said downstream wall portions being generally curved to mate with said guide disc in a restraining relationship.
References Cited (Backward Citations)
US2636665A
Cited
US2618433A
Cited
US2910268A
Cited
US3031132A
Cited
US3575522A
Cited
US3647313A
Cited
US3632221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |