Patent US4485630A successfully refreshed from Google Patents.
US4485630A
Expired / Lapsed
US
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Combustor liner
Assignee: General Electric Co
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Filing: 1982-12-08
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Granted: 1984-12-04
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Expires: 2002-12-08
Abstract
Abstract A combustor liner for use between a cooling fluid and hot combustion gases is disclosed. The combustor liner includes portions having different thermal coefficients of expansion so that portions subject to relatively high temperatures have relatively low coefficients of expansion and portions subject to relatively low temperatures have relatively high coefficients of expansion. In this manner, differential thermal expansion is reduced, thereby reducing thermally induced stresses and distortions.
Inventors
- 👤 Milton J. Kenworthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:33
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/002; B; B23; B23P; B23P15/00; F23R3/02; F23R3/04; F23R3/06; F23R3/08; B23P2700/00; B23P2700/13
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
36 words
A combustor liner for use between a cooling fluid and hot combustion gases comprising adjacent portions having different thermal coefficients of expansion effective for reducing stress due to differential thermal expansion tendency of said adjacent portions.
Claim 2
Dependent Claim
36 words
A combustor liner for use between a cooling fluid and hot combustion gases comprising adjacent portions having different thermal coefficients of expansion effective for reducing stress due to differential thermal expansion tendency of said adjacent portions.
Claim 3
Dependent Claim
17 words
A combustor liner according to claim 1 wherein said coefficients of expansion vary continuously throughout said liner.
Claim 4
Dependent Claim
43 words
A combustor liner according to claim 1 wherein said adjacent portions comprise first and second portions, said first portion being subject to experiencing higher temperatures than said second portion and having a thermal coefficient of expansion less than that of said second portion.
Claim 5
Dependent Claim
54 words
A combustor liner according to claim 3 wherein said first portion comprises a liner segment effective for providing a boundary to said hot combustion gases and said second portion comprises a nugget extending from an end region of said liner segment, said nugget including a plurality of inlet apertures for receiving said cooling fluid.
Claim 6
Dependent Claim
50 words
A combustor liner according to claim 4 wherein said end region of said liner segment includes an aftmost, lip end which cooperates with said nugget for defining a cooling air plenum having an outlet aperture for directing cooling air for film cooling a second liner segment extending from said nugget.
Claim 7
Dependent Claim
74 words
An annular combustor liner for use between a cooling fluid and combustion gases in a gas turbine engine comprising a plurality of coaxial annular liner segments effective for providing a boundary to said hot combustion gases and a plurality of annular nuggets joining adjacent liner segments, said nuggets including a plurality of inlet apertures and defining annular outlet apertures, said liner segments having a thermal coefficient of expansion less than that of said nuggets.
Claim 8
Dependent Claim
74 words
An annular combustor liner for use between a cooling fluid and combustion gases in a gas turbine engine comprising a plurality of coaxial annular liner segments effective for providing a boundary to said hot combustion gases and a plurality of annular nuggets joining adjacent liner segments, said nuggets including a plurality of inlet apertures and defining annular outlet apertures, said liner segments having a thermal coefficient of expansion less than that of said nuggets.
Claim 9
Dependent Claim
48 words
A combustor liner for use between a cooling fluid and hot combustion gases comprising portions having different thermal coefficients of expansion so that portions subject to relatively high temperatures have relatively low coefficients of expansion and portions subject to relatively low temperatures have relatively high coefficients of expansion.
Claim 10
Dependent Claim
48 words
A combustor liner for use between a cooling fluid and hot combustion gases comprising portions having different thermal coefficients of expansion so that portions subject to relatively high temperatures have relatively low coefficients of expansion and portions subject to relatively low temperatures have relatively high coefficients of expansion.
Claim 11
Independent Claim
52 words
A method of fabricating a combustor liner comprising: providing an annular liner segment having a first thermal coefficient of expansion; providing an annular nugget having a second thermal coefficient of expansion greater than that of said first coefficient of expansion; and joining said nugget to an end region of said liner segment.
Claim 12
Independent Claim
52 words
A method of fabricating a combustor liner comprising: providing an annular liner segment having a first thermal coefficient of expansion; providing an annular nugget having a second thermal coefficient of expansion greater than that of said first coefficient of expansion; and joining said nugget to an end region of said liner segment.
Claim 13
Independent Claim
67 words
A method of fabricating a combustor liner comprising: providing a plurality of first alloy strips having a first thermal coefficient of expansion; providing a second alloy strip having a second thermal coefficient of expansion greater than that of said first alloy strips; joining said second strip to opposing ends of adjacent ones of said first strips; and forming said joined first and second strips into a ring.
Claim 14
Independent Claim
67 words
A method of fabricating a combustor liner comprising: providing a plurality of first alloy strips having a first thermal coefficient of expansion; providing a second alloy strip having a second thermal coefficient of expansion greater than that of said first alloy strips; joining said second strip to opposing ends of adjacent ones of said first strips; and forming said joined first and second strips into a ring.
Claim 15
Dependent Claim
39 words
A method of fabricating a combustor liner according to claim 9 further including providing a plurality of inlet apertures in said second strip and forming said second strip into a nugget defining a plenum having a generally arcuate profile.
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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) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |