US4949538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustor gas feed with coordinated proportioning
Assignee: General Electric Co
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Filing: 1988-11-28
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Granted: 1990-08-21
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Expires: 2008-11-28
Abstract
Abstract A coordinated valve splitter assembly includes a linear trim primary valve in parallel with an equal-percentage-trim valve to split fuel gas between primary nozzles and a secondary nozzle of a gas turbine combustor. In one embodiment, coordination of the actuation of the two valves is accomplished through rigid connection of the valve shafts. Shaped-cam and electronic actuation of the two valves is also disclosed.
Inventors
- 👤 Robert J. Iasillo
- 👤 Stephen Fedor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:19
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; F23R3/34; F02; F02C; F02C7/00; F02C7/22; F02C7/228; F05; F05D; F05D2270/00; F05D2270/30; F05D2270/31
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
A gas fuel splitter for a combustor for a gas turbine engine, said combustor including at least one primary nozzle and at least one secondary nozzle, comprising: a set of stop, speed-ratio and control valves for feeding a controlled flow of said gas fuel; a coordinated valve splitter assembly for receiving said controlled flow; said coordinated valve splitter assembly including a primary split valve adapted to feed a portion of said controlled flow to said at least one primary nozzle; said coordinated valve splitter assembly further including a secondary split valve in parallel with said primary split valve, and adapted to feed a remainder of said flow of said gas fuel to said at least one secondary nozzle; said primary split valve and said secondary split valve including first and second different valve trims; and means for coordinating actuation of said primary split valve and said secondary split valve.
Claim 2
Dependent Claim
149 words
A gas fuel splitter for a combustor for a gas turbine engine, said combustor including at least one primary nozzle and at least one secondary nozzle, comprising: a set of stop, speed-ratio and control valves for feeding a controlled flow of said gas fuel; a coordinated valve splitter assembly for receiving said controlled flow; said coordinated valve splitter assembly including a primary split valve adapted to feed a portion of said controlled flow to said at least one primary nozzle; said coordinated valve splitter assembly further including a secondary split valve in parallel with said primary split valve, and adapted to feed a remainder of said flow of said gas fuel to said at least one secondary nozzle; said primary split valve and said secondary split valve including first and second different valve trims; and means for coordinating actuation of said primary split valve and said secondary split valve.
Claim 3
Dependent Claim
35 words
A gas fuel splitter according to claim 1, wherein: one of said first and second valve trims is a linear trim; and the other of said first and second valve trims is an equal-percentage trim.
Claim 4
Dependent Claim
176 words
A gas fuel splitter for a combustor for a gas turbine engine, said combustor including at least one primary nozzle and at least one secondary nozzle, comprising: a set of stop, speed-ratio and control valves for feeding a controlled flow of said gas fuel; a coordinated valve splitter assembly for receiving said controlled flow; said coordinated valve splitter assembly including a primary split valve adapted to feed a portion of said controlled flow to said at least one primary nozzle; said coordinated valve splitter assembly further including a secondary split valve in parallel with said primary split valve, and adapted to feed a remainder of said flow of said gas fuel to said at least one secondary nozzle; said primary split valve and said secondary split valve including first and second different valve trims; and means for coordinating actuation of said primary split valve and said secondary split valve, wherein said means for coordinating actuation closes said secondary split valve by the same predetermined value as a value by which it opens said primary split valve.
Claim 5
Dependent Claim
176 words
A gas fuel splitter for a combustor for a gas turbine engine, said combustor including at least one primary nozzle and at least one secondary nozzle, comprising: a set of stop, speed-ratio and control valves for feeding a controlled flow of said gas fuel; a coordinated valve splitter assembly for receiving said controlled flow; said coordinated valve splitter assembly including a primary split valve adapted to feed a portion of said controlled flow to said at least one primary nozzle; said coordinated valve splitter assembly further including a secondary split valve in parallel with said primary split valve, and adapted to feed a remainder of said flow of said gas fuel to said at least one secondary nozzle; said primary split valve and said secondary split valve including first and second different valve trims; and means for coordinating actuation of said primary split valve and said secondary split valve, wherein said means for coordinating actuation closes said secondary split valve by the same predetermined value as a value by which it opens said primary split valve.
Claim 6
Dependent Claim
30 words
A gas fuel splitter according to claim 3, wherein said means for coordinating includes a mechanical connection between control shafts of said primary split valve and said secondary split valve.
Claim 7
Dependent Claim
205 words
A gas fuel splitter for a combustor for a gas turbine engine, said combustor including at least one primary nozzle and at least one secondary nozzle, comprising: a set of stop, speed-ratio and control valves for feeding a controlled flow of said gas fuel; a coordinated valve splitter assembly for receiving said controlled flow; said coordinated valve splitter assembly including a primary split valve adapted to feed a portion of said controlled flow to said at least one primary nozzle; said coordinated valve splitter assembly further including a secondary split valve in parallel with said primary split valve, and adapted to feed a remainder of said flow of said gas fuel to said at least one secondary nozzle; said primary split valve and said secondary split valve including first and second different valve trims; and means for coordinating actuation of said primary split valve and said secondary split valve, wherein said means for coordinating actuation closes said secondary split valve by the same predetermined value as a value by which it opens said primary split valve, and further wherein one of said first and second valve trims is a linear trim, and the other of said first and second valve trims is an equal-percentage trim.
Claim 8
Dependent Claim
205 words
A gas fuel splitter for a combustor for a gas turbine engine, said combustor including at least one primary nozzle and at least one secondary nozzle, comprising: a set of stop, speed-ratio and control valves for feeding a controlled flow of said gas fuel; a coordinated valve splitter assembly for receiving said controlled flow; said coordinated valve splitter assembly including a primary split valve adapted to feed a portion of said controlled flow to said at least one primary nozzle; said coordinated valve splitter assembly further including a secondary split valve in parallel with said primary split valve, and adapted to feed a remainder of said flow of said gas fuel to said at least one secondary nozzle; said primary split valve and said secondary split valve including first and second different valve trims; and means for coordinating actuation of said primary split valve and said secondary split valve, wherein said means for coordinating actuation closes said secondary split valve by the same predetermined value as a value by which it opens said primary split valve, and further wherein one of said first and second valve trims is a linear trim, and the other of said first and second valve trims is an equal-percentage trim.
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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) | 1993-08-20 | 1994-02-19 | 1994-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-20 | 1998-02-19 | 1998-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-20 | 2002-02-19 | 2002-08-21 | $7700.00 | Window Closed / Lapsed |