US3899882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine combustor basket cooling
Assignee: Westinghouse Electric Corp
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Filing: 1974-03-27
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Granted: 1975-08-19
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Expires: 1994-03-27
Abstract
Abstract A step-liner type combustion chamber for a gas turbine has a combustor basket cooling arrangement as part of the combustion air orifice structure. The combustion air orifices include a flanged tubular arrangement for ducting combustion air into the combustion chamber while causing air adjacent to the orifice to flow along the combustor basket wall for cooling purposes. The flange is disposed outwardly of the combustor basket and has a spacer member disposed between the flange and the gasket. The tubular portion extends into the basket. The spacer has a gap disposed on its downstream side. An arrangement for air supply orifices is similar, whereby a disc is raised radially outwardly from the combustor basket surface by a spacer member. Each spacer member has a gap across its downstream side to cause air to flow therethrough between the basket wall and the disc member or flange portion on the tubular arrangements, permitting air currents to pass close to the combustor basket wall. This flow of air next to the basket wall increases heat transfer by convection thereby reducing distortion and weld failure in the combustor basket wall.
Inventors
- 👤 Stephen R Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:37
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/04; F23R3/045
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
278 words
A combustor for a gas turbine comprising: a generally cylindrical combustor basket; a fuel spray nozzle disposed generally at the upstream end of said generally cylindrical combustor basket; an ignitor member disposed near the upstream end of said generally cylindrical combustor basket; annular arrays of air inlets comprising: annular arrays of air scoops disposed in said generally cylindrical combustor basket; annular arrays of air orifices disposed in said generally cylindrical combustor basket; said air scoops being comprised of generally tubular members extending inwardly through holes in said combustor basket, said tubular members each having a generally annular flange on its radially outermost portion, said generally annular flange being disposed generally radially outwardly of the wall of said generally cylindrical combustor basket; an intermediate generally annular spacer member disposed between said generally annular flange and said combustor basket; said generally annular flange and said intermediate generally annular spacer member being fixedly attached to each other and said combustor basket; said intermediate generally annular spacer member between said generally annular flange and said combustor basket having at least one arcuate gap disposed therein; said air orifices being comprised of; a disc member having an air passage hole therethrough, said hole in said disc member being disposed generally radially outwardly of its respective adjacent hole in said combustor basket; a second intermediate generally annular spacer member disposed between each of said disc members and said combustor basket; said disc members and said second intermediate annular spacer members being fixedly attached to each other and said combustor basket; said second intermediate generally annular spacer member between said disc member and said combustor basket having at least one generally arcuate gap disposed therein.
Claim 2
Dependent Claim
278 words
A combustor for a gas turbine comprising: a generally cylindrical combustor basket; a fuel spray nozzle disposed generally at the upstream end of said generally cylindrical combustor basket; an ignitor member disposed near the upstream end of said generally cylindrical combustor basket; annular arrays of air inlets comprising: annular arrays of air scoops disposed in said generally cylindrical combustor basket; annular arrays of air orifices disposed in said generally cylindrical combustor basket; said air scoops being comprised of generally tubular members extending inwardly through holes in said combustor basket, said tubular members each having a generally annular flange on its radially outermost portion, said generally annular flange being disposed generally radially outwardly of the wall of said generally cylindrical combustor basket; an intermediate generally annular spacer member disposed between said generally annular flange and said combustor basket; said generally annular flange and said intermediate generally annular spacer member being fixedly attached to each other and said combustor basket; said intermediate generally annular spacer member between said generally annular flange and said combustor basket having at least one arcuate gap disposed therein; said air orifices being comprised of; a disc member having an air passage hole therethrough, said hole in said disc member being disposed generally radially outwardly of its respective adjacent hole in said combustor basket; a second intermediate generally annular spacer member disposed between each of said disc members and said combustor basket; said disc members and said second intermediate annular spacer members being fixedly attached to each other and said combustor basket; said second intermediate generally annular spacer member between said disc member and said combustor basket having at least one generally arcuate gap disposed therein.
Claim 3
Dependent Claim
39 words
A combustor for a gas turbine as recited in claim 1, wherein said arcuate gap in said intermediate spacer member radially inwardly of said generally annular flange is disposed on the generally downstream side of said intermediate spacer member.
Claim 4
Dependent Claim
40 words
A combustor for a gas turbine as recited in claim 1, wherein said arcuate gap in said second intermediate spacer member radially inwardly of said disc member, is disposed on the generally downstream side of said second intermediate spacer member.
Claim 5
Dependent Claim
34 words
A combustor for a gas turbine as recited in claim 1, wherein said air scoops and said air orifices are fixedly attached to said intermediate spacer members and said combustor basket by spot welding.
Claim 6
Dependent Claim
33 words
A combustor for a gas turbine as recited in claim 1, wherein said spacer member for said air inlets have a plurality of arcuate gaps therein for the passage of cooling fluid therethrough.
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |