US3786632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reheat system for a gas turbine engine
Assignee: Rolls Royce PLC
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Filing: 1972-08-07
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Granted: 1974-01-22
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Expires: 1992-08-07
Abstract
Abstract A reheat system for a gas turbine engine is provided with fuel supply means, a plurality of fuel manifolds having fuel distribution holes or nozzles located thereon, fuel/exhaust gas mixing means associated with each of the holes or nozzles and flame stabilisation means located downstream of the fuel manifolds. The mixing means are adapted in operation to tap exhaust gases from a portion of the reheat system, to mix the exhaust gases with fuel from their respective associated fuel nozzles or holes and exhaust the mixture into the combustion zone of the reheat system.
Inventors
- 👤 D Anley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:43
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; F23R3/30; F23R3/32; F23R3/02; F23R3/16; F23R3/18; F23R3/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
177 words
A reheat system for a gas turbine engine comprising: fuel supply means; a plurality of axially disposed fuel manifolds each operatively connected to said fuel supply means and each having a plurality of distribution nozzles thereon; fuel/exhaust gas mixing means operatively connected with each of said nozzles of each of said fuel manifold means; and flame stabilization means positioned downstream of said fuel manifold means, each of said mixing means being arranged in operation to tap exhaust gases from a portion of said reheat system radially outwardly of said respective fuel manifolds and to mix the exhaust gases with fuel from the respective associated fuel nozzles and to exhaust the mixture of exhaust gases and fuel into the combustion zone of said reheat system at a position radially inwardly of the respective manifolds, and said mixing means extending transversely to the flow of exhaust gases through said reheat system whereby said exhaust gases and said mixture of exhaust gases and fuel flow from a cooler zone and are discharged in a hotter zone of said reheat systeM.
Claim 2
Dependent Claim
177 words
A reheat system for a gas turbine engine comprising: fuel supply means; a plurality of axially disposed fuel manifolds each operatively connected to said fuel supply means and each having a plurality of distribution nozzles thereon; fuel/exhaust gas mixing means operatively connected with each of said nozzles of each of said fuel manifold means; and flame stabilization means positioned downstream of said fuel manifold means, each of said mixing means being arranged in operation to tap exhaust gases from a portion of said reheat system radially outwardly of said respective fuel manifolds and to mix the exhaust gases with fuel from the respective associated fuel nozzles and to exhaust the mixture of exhaust gases and fuel into the combustion zone of said reheat system at a position radially inwardly of the respective manifolds, and said mixing means extending transversely to the flow of exhaust gases through said reheat system whereby said exhaust gases and said mixture of exhaust gases and fuel flow from a cooler zone and are discharged in a hotter zone of said reheat systeM.
Claim 3
Dependent Claim
58 words
A reheat system as claimed in claim 1 wherein each of said fuel/exhaust gas mixing means comprises a conduit having an upstream directed inlet in said portion of said reheat system, and a downstream outlet directed towards the combustion zone of said reheat system and a fuel inlet located between said upstream directed inlet and said downstream outlet.
Claim 4
Dependent Claim
28 words
A reheat system as claimed in claim 2 wherein said fuel inlet is connected by means of a further conduit to said fuel nozzle in the respective manifolds.
Claim 5
Dependent Claim
20 words
A reheat system as claimed in claim 2 wherein said fuel nozzle comprises said fuel inlet in the respective manifolds.
Claim 6
Dependent Claim
28 words
A reheat system as claimed in claim 2 wherein the outlets of said fuel/exhaust gas mixing means include a baffle for directing the exhaust and gas mixture inwardly.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |