Patent US3785146A successfully refreshed from Google Patents.
US3785146A
Expired / Lapsed
US
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Self compensating flow divider for a gas turbine steam injection system
Assignee: General Electric Co
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Filing: 1972-05-01
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Granted: 1974-01-15
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Expires: 1992-05-01
Abstract
Abstract In a gas turbine, steam is injected into the combustion chamber both upstream and downstream of the combustion reaction zone. A self-compensating feeding device divides the steam flows between the upstream and downstream injection points and supplies a constant percentage of steam to air to the combustion reaction zone regardless of the total rate of steam flow into the gas turbine cycle.
Inventors
- 👤 G Bailey
- 👤 C Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:43
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/20; F02C3/30; F02C3/305
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
A self-compensating flow divider for adding steam to gas turbine motive fluid flowing first toward and then away from a combustion process, comprising: first conduit means conducting the motive fluid toward said combustion process, second conduit means conducting the motive fluid away from said combustion process, third conduit means connected to a source of said steam, a primary fixed nozzle connected to said third conduit means and emptying into the first conduit, a secondary fixed nozzle also connected to the third conduit means, and means providing communication between said secondary Nozzle and the first and second conduit means arranged and adapted to divide the steam flowing from the secondary nozzle between said first and second conduit means in proportions determined by the rate of flow from the secondary nozzle.
Claim 2
Dependent Claim
129 words
A self-compensating flow divider for adding steam to gas turbine motive fluid flowing first toward and then away from a combustion process, comprising: first conduit means conducting the motive fluid toward said combustion process, second conduit means conducting the motive fluid away from said combustion process, third conduit means connected to a source of said steam, a primary fixed nozzle connected to said third conduit means and emptying into the first conduit, a secondary fixed nozzle also connected to the third conduit means, and means providing communication between said secondary Nozzle and the first and second conduit means arranged and adapted to divide the steam flowing from the secondary nozzle between said first and second conduit means in proportions determined by the rate of flow from the secondary nozzle.
Claim 3
Dependent Claim
41 words
The combination according to claim 1, wherein an opening provides communication between the first and second conduit means and wherein said secondary nozzle is arranged to empty into said first conduit means and is spaced from and directed toward said opening.
Claim 4
Dependent Claim
69 words
The combination according to claim 2, wherein said primary nozzle, said secondary nozzle and said opening are proportioned such that the rate of decrease of flow of steam into said first conduit means from the secondary nozzle is equal to the rate of increase of flow of steam into the first conduit means from said primary nozzle, as the total percent of steam, added to the motive fluid increases.
Claim 5
Dependent Claim
57 words
The combination according to claim 1, wherein said first conduit means is an elongated casing surrounding a combustion liner, wherein said second conduit means is said liner, wherein said primary nozzle is a fixed steam nozzle emptying into said casing, and wherein said secondary nozzle is a fixed steam nozzle emptying toward a hole in said liner.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |