Patent US3652181A successfully refreshed from Google Patents.
US3652181A
Expired / Lapsed
US
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Cooling sleeve for gas turbine combustor transition member
Assignee: Individual
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Filing: 1970-11-23
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Granted: 1972-03-28
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Expires: 1990-11-23
Abstract
Abstract In a heavy duty gas turbine, the transition member leading from the combustion chamber outlet to the first turbine stage is cooled by means of a surrounding sleeve which admits compressor air on one side and which, after cooling the transition member, admits air into the hot combustion gas path to improve the radial temperature gradient at the turbine nozzle.
Inventors
- 👤 Carl F Wilhelm Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:11
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/023; F23; F23R; F23R2900/00; F23R2900/03044
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
In a gas turbine having a transition member arranged to conduct hot combustion gases from a combustion chamber to a turbine inlet passage, said transition member being disposed in a chamber connected to a source of pressurized cooling fluid, the improvement comprising: a transition member portion having a substantially imperforate top wall top and an opposed bottom wall, a sleeve member surrounding and spaced from said transition member portion and having top and bottom opposed walls spaced from said respective top and bottom transition member opposed walls to form an unobstructed flow space there between, said top wall of the sleeve member being perforated and communicating with a supply of compressed air and arranged to admit jets of cooling fluid for impingement cooling of the transition member top wall, and said bottom wall of the transition member portion having openings arranged to admit cooling fluid from the sleeve into the transition member interior for profiling the hot combustion gases entering the turbine.
Claim 2
Dependent Claim
162 words
In a gas turbine having a transition member arranged to conduct hot combustion gases from a combustion chamber to a turbine inlet passage, said transition member being disposed in a chamber connected to a source of pressurized cooling fluid, the improvement comprising: a transition member portion having a substantially imperforate top wall top and an opposed bottom wall, a sleeve member surrounding and spaced from said transition member portion and having top and bottom opposed walls spaced from said respective top and bottom transition member opposed walls to form an unobstructed flow space there between, said top wall of the sleeve member being perforated and communicating with a supply of compressed air and arranged to admit jets of cooling fluid for impingement cooling of the transition member top wall, and said bottom wall of the transition member portion having openings arranged to admit cooling fluid from the sleeve into the transition member interior for profiling the hot combustion gases entering the turbine.
Claim 3
Dependent Claim
51 words
The combination according to claim 1, wherein said top and bottom walls are arcuate surfaces, and wherein said top walls have greater surface areas than said bottom walls and wherein the perforations in the top wall are smaller in size and greater in number than the openings in said bottom wall.
Claim 4
Dependent Claim
35 words
The combination according to claim 1, wherein said sleeve member comprises a sheet metal jacket surrounding said transition member portion and substantially uniformly spaced therefrom and sealingly attached thereto by crimped edges on said jacket.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |