Wall elements for gas turbine engine combustors
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0652124
(2007-01-11)
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등록번호 |
US-8650882
(2014-02-18)
|
우선권정보 |
GB-0601413.8 (2006-01-25) |
발명자
/ 주소 |
- Woolford, James R
- Mills, Stephen J
- White, Kevin A
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출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
7 |
초록
▼
A wall element of a gas turbine engine having an inner hot surface, and an outer cooler surface, during use. A plurality of projections is provided on the outer surface to facilitate heat transfer to a coolant flow during use. The projections are arranged in a first density pattern and in a second h
A wall element of a gas turbine engine having an inner hot surface, and an outer cooler surface, during use. A plurality of projections is provided on the outer surface to facilitate heat transfer to a coolant flow during use. The projections are arranged in a first density pattern and in a second higher density pattern for increased cooling. The second higher density pattern is positioned adjacent a hotter region of the tile than the first density pattern to reduce the thermal gradient throughout the wall element.
대표청구항
▼
1. A wall element of a gas turbine engine combustor, the wall element comprising: an inner hot surface during use;an outer cooler surface during use, with respect to the gas turbine engine combustor; and a plurality of projections extending from the outer cooler surface to an inner surface of a line
1. A wall element of a gas turbine engine combustor, the wall element comprising: an inner hot surface during use;an outer cooler surface during use, with respect to the gas turbine engine combustor; and a plurality of projections extending from the outer cooler surface to an inner surface of a liner to facilitate heat transfer to a coolant flow during use, wherein said projections are arranged in a first density pattern having a plurality of rows of said projections and in a second higher density pattern aft of the first density pattern having a plurality of rows of said projections with a closer spacing between projections than a spacing between projections in the first density pattern, the second higher density patter providing increased cooling compared to the first density pattern during use, and wherein said second higher density pattern is within a hotter region of the wall element to reduce the thermal gradient throughout the wall element. 2. A wall element according to claim 1, wherein a density of the projections is graduated between first and second regions. 3. A wall element according to claim 1, wherein a third pattern or more of projections are provided between the first and second patterns, the third or more pattern having a density of projections between those densities of the first and second patterns. 4. A wall element according to claim 1, wherein some or all of the projections have a substantially circular cross section. 5. A wall element according to claim 1, wherein the second higher density pattern comprises rows of projections in a staggered array. 6. A wall element according to claim 1, wherein the first density pattern comprises the rows of projections in a staggered array. 7. A wall element according to claim 5, wherein the there are at least two regions of pedestals which comprises the rows of projections in a staggered array, wherein adjacent the rows are offset by different amounts. 8. A wall element according to claim 1, wherein at least some of the rows of projections in the first pattern are arranged in line in the general direction of coolant flow, thereby lowering heat transfer. 9. A wall element according to claim 1, wherein at least some of the projections in the first pattern are elongate and are arranged in the general direction of coolant flow, thereby lowering heat transfer. 10. A wall element according to claim 9, wherein the elongate projections in the first pattern extend substantially in the downstream direction of the coolant flow. 11. A wall element according to claim 1, wherein the cross-section size of the projections in the second pattern is greater than the projections in the first pattern. 12. A wall element according to claim 1, wherein there are more projections in the second pattern than in the first pattern within an equivalently sized area. 13. A wall element according to claim 11, there are more projections in the second pattern than in the first pattern by virtue of the spacing of projections in at least one column of projections. 14. A wall element according to claim 11, wherein there are more projections in the second pattern than in the first pattern by virtue of the spacing of projections in at least one row of projections. 15. A wall element according to claim 1, wherein a density of projections increases in the downstream direction of coolant flow. 16. A wall element according to claim 1, wherein the wall element defines a feed hole and a density of projections increases radially away from the feed hole. 17. A combustor wall structure of a gas turbine engine, the wall structure comprising radially inner and outer walls, wherein the inner wall includes at least one wall element according to claim 1. 18. A wall element according to claim 12, wherein there are more projections in the second pattern than in the first pattern by virtue of the spacing of projections in at least one row of projections. 19. A wall element according to claim 1, wherein the wall element is a tile. 20. A combustor wall structure according to claim 17, wherein the wall element is a tile, and the inner wall comprises a plurality of the tiles.
이 특허에 인용된 특허 (7)
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Robert James Bland, Aerodynamic devices for enhancing sidepanel cooling on an impingement cooled transition duct and related method.
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Bunker, Ronald Scott, Combustor liner with ring turbulators and related method.
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Enzaki Yoshiki (Kobe JPX) Kitahara Kazuki (Kobe JPX) Terasaka Satoru (Kakogawa JPX) Mori Kenji (Akashi JPX) Kimura Takeshi (Kobe JPX), Combustor of gas turbine.
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Mumford Stephen E. (Longwood FL) Smed Jan P. (Winter Springs FL), Gas turbine combustion chamber with air scoops.
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Bhangu Jagnandan Kumar (Ockbrook EN), Laminated materials.
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Anthony Pidcock GB; Desmond Close GB; Michael P. Spooner GB, Wall elements for gas turbine engine combustors.
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Pidcock Anthony (Shelton Lock GB2) Pask George (Stanton-by-Bridge GB2), Wall structure for a combustion chamber.
이 특허를 인용한 특허 (1)
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Richardson, Brian; Oumejjoud, Khalid; Cutright, John; McMullen, Nikki; Stuttaford, Peter John; Parker, Richard; Soni, Sumit, Combustion liner with bias effusion cooling.
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