US5222357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine dual fuel nozzle
Assignee: Siemens Energy Inc
•
Filing: 1992-01-21
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Granted: 1993-06-29
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Expires: 2012-01-21
Abstract
Abstract In a gas turbine dual fuel nozzle including a main nozzle body with a support flange having a liquid fuel and atomizing air nozzle structure centrally extending therethrough with a fuel and atomizing air discharge structure arranged at its free end and a fuel gas supply structure arranged around the free end of the fuel and atomizing air discharge structure wherein the fuel gas supply structure has a front face extending inwardly adjacent the fuel and atomizing air discharge structure and having a central opening permitting the discharge of liquid fuel and atomizing air therethrough, the front face has bores extending therethrough in radial symmetry in a circular array and radial slots formed therein between said bores and the central opening so as to eliminate hoop stresses in the front face around its central opening.
Inventors
- 👤 Jeffrey C. Eddy
- 👤 J. Wayne Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:48
CPC Classifications
F; F23; F23D; F23D17/00; F23D17/002; F23D2211/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
155 words
A gas turbine dual fuel nozzle including a main nozzle body with a support flange for mounting the nozzle to a fuel combustor, said support flange having a central opening with a liquid fuel and atomizing air nozzle structure extending therethrough and having a liquid fuel discharge nozzle surrounded by atomizing air discharge passages formed at its free end, and a fuel gas supply structure arranged circularly around the free end of said liquid fuel and atomizing air nozzle structure and having an inwardly extending front face structure provided with a central opening permitting the discharge of liquid fuel and atomizing air therethrough, said front face structure having bores extending therethrough in radial symmetry in a circular array at a predetermined distance from the axis of said central opening and radial slots formed between said bores and said central opening so as to eliminate hoop stresses in said front face structure adjacent its central opening.
Claim 2
Dependent Claim
155 words
A gas turbine dual fuel nozzle including a main nozzle body with a support flange for mounting the nozzle to a fuel combustor, said support flange having a central opening with a liquid fuel and atomizing air nozzle structure extending therethrough and having a liquid fuel discharge nozzle surrounded by atomizing air discharge passages formed at its free end, and a fuel gas supply structure arranged circularly around the free end of said liquid fuel and atomizing air nozzle structure and having an inwardly extending front face structure provided with a central opening permitting the discharge of liquid fuel and atomizing air therethrough, said front face structure having bores extending therethrough in radial symmetry in a circular array at a predetermined distance from the axis of said central opening and radial slots formed between said bores and said central opening so as to eliminate hoop stresses in said front face structure adjacent its central opening.
Claim 3
Dependent Claim
23 words
A gas turbine nozzle according to claim 1, wherein six bores are arranged in said front face structure around the central opening thereof.
Claim 4
Dependent Claim
18 words
A gas turbine nozzle according to claim 1, wherein said bores are arranged on a 1.423" radius circle.
Claim 5
Dependent Claim
17 words
A gas turbine nozzle according to claim 1, wherein said bores have a diameter of about 0.062".
Claim 6
Dependent Claim
15 words
A gas turbine nozzle according to claim 1, wherein said slats are about 0.008" wide.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-28 | 1996-12-28 | 1997-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-28 | 2000-12-28 | 2001-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-28 | 2004-12-28 | 2005-06-29 | $7700.00 | Window Closed / Lapsed |