[특허]Turbine shroud sealing apparatus

[미국특허] Turbine shroud sealing apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01D-009/04 F01D-011/00
출원번호	US-0821599 (2010-06-23)
등록번호	US-8753073 (2014-06-17)
발명자 / 주소	Albers, Joseph Charles Marusko, Mark Willard Wilson, Barry Allan Dziech, Aaron Michael
출원인 / 주소	General Electric Company
대리인 / 주소	Andes, William Scott
인용정보	피인용 횟수 : 10 인용 특허 : 14

초록 ▼

A turbine shroud sealing apparatus for a gas turbine engine includes: (a) an arcuate shroud segment comprising a low-ductility material and having a cross-sectional shape defined by opposed forward and aft walls, and opposed inner and outer walls, the walls extending between opposed first and second end faces of the segment; and (b) a first seal assembly received in at least one slot formed in the first end face, the first seal assembly comprising one or more spline seals which protrude from the first end face and which are arranged to define a continuous sealing surface around the perimeter of the first end face.

대표청구항 ▼

1. A turbine shroud apparatus surrounding a rotor carrying an array of turbine blades for a gas turbine engine having a centerline axis, comprising: (a) an annular turbine case;(b) an annular turbine shroud fixedly mounted within and directly abutting the turbine case, comprising a plurality of arcuate shroud segments, each shroud segment comprising a low-ductility material and configured as a hollow box having opposed forward and aft walls, and opposed inner and outer walls, each of the walls extending between opposite end faces, wherein the inner wall of each shroud segment defines an arcuate flowpath surface exposed to and closely surrounding the turbine blades, to thereby define an outer radial flowpath boundary for a hot gas stream flowing through the rotor, and wherein the shroud segments are disposed with mating end faces in close proximity so as to define end gaps between each facing pair of end faces; and(c) a seal assembly disposed in each of the end gaps, the seal assembly comprising one or more spline seals which are arranged to define a continuous sealing surface around the perimeters of the mating end faces. 2. The apparatus of claim 1 wherein the seal assembly comprises a plurality of generally planar spline seals disposed in intersecting slots formed in each of the end faces. 3. The apparatus of claim 2 further including at least one corner seal having a generally L-shaped cross-section and disposed at a juncture of two intersecting spline slots. 4. The apparatus of claim 1 wherein each of the end faces includes: (a) a first slot in the end face along the inner wall, having a first spline seal received therein;(b) a second slot in the end face along the forward wall, having an inboard end which intersects a forward end of the first slot, and having a second spline seal disposed therein;(c) a third slot in the end face along the aft wall, having an inboard end which intersects an aft end of the first slot, and having a third spline seal disposed therein;(d) a fourth slot in the end face along the outer wall, having a fourth spline seal received therein;(e) a fifth slot in the end face along the forward wall, extending between the second slot and a forward end of the fourth slot, having a fifth spline seal disposed therein; and(f) a sixth slot in the end face along the aft wall, extending between the third slot and an aft end of the fourth slot, having a sixth spline seal disposed therein. 5. The apparatus of claim 4 wherein the forward wall of the shroud segment includes a rail protruding therefrom; and where the first end face includes a seventh slot in the end face along the inner wall, positioned at the location of the rail and intersecting the second slot, the seventh slot having a seventh spline seal received therein. 6. The apparatus of claim 1 wherein the shroud segment comprises a ceramic matrix composite material.

이 특허에 인용된 특허 (14) 인용/피인용 타임라인 분석

Balsdon, Julian G; Walters, Sean A, Blade tip clearance system.
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Morrison, Jay, Ceramic matrix composite component for a gas turbine engine.
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Craig Alan Gonyou ; Roger Lee Doughty ; Monty Lee Shelton, End rail cooling for combined high and low pressure turbine shroud.
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Kellock Iain R. (Hamilton OH) Kemp Andrew D. (Mason OH), Flexible three-piece seal assembly.
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Rock Peter J. (Byfield MA) Bussichella Joseph K. (Winchester MA) Vdoviak John W. (Marblehead MA), Low leakage turbine nozzle.
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Sweeney Derek J. (Dublin IEX), Low-pressure turbine shroud.
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Predmore, Daniel Ross, Overlapping interference seal and methods for forming the seal.
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Razzell, Anthony G.; Hillier, Steven M., Rotor seal segment.
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Hagle Michael P. (Mason OH), Seal assembly for segmented turbine engine structures.
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Correia Victor H. S., Stationary flowpath components for gas turbine engines.
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Victor H. S. Correia, Stationary flowpath components for gas turbine engines.
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Gendraud,Alain; Roussin Moynier,Delphine, Stationary ring assembly for a gas turbine.
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Thompson, Jeff, Turbine stage one shroud configuration and method for service enhancement.
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Wakeman Thomas G. (Lawrenceburg IN) Corsmeier Robert J. (Cincinnati OH), Turbo machine shroud-to-rotor blade dynamic clearance control.
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이 특허를 인용한 특허 (10) 인용/피인용 타임라인 분석

Kerns, Daniel Patrick; Reynolds, Brandon ALlanson, Airfoil fluid curtain to mitigate or prevent flow path leakage.
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Ugarte, Johnnattan Tennessee; Senile, Darrell Glenn; Srinivas, Mullahalli Venkataramaniah; Farmer, Jonathon; Quill, Hugh, Leaf seal reach over spring with retention mechanism.
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Shapiro, Jason David; Desander, Donald Brett; Vickers, Edward Charles, Methods and assemblies for attaching airfoils within a flow path.
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Shapiro, Jason David; Reynolds, Brandon ALlanson; Baldiga, Jonathan David, Methods and features for positioning a flow path inner boundary within a flow path assembly.
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Kirtley, Kevin Richard; Morgan, Victor John, Tapered gas turbine segment seals.
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Albers, Joseph Charles; Proctor, Robert; Shelton, Monty Lee; Russo, Jr., Richard, Turbine shroud mounting and sealing arrangement.
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O'Leary, Mark; Vetters, Daniel K.; Brandt, Matthew R.; Freeman, Ted J., Turbine shroud segment with buffer air seal system.
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O'Leary, Mark; Vetters, Daniel K.; Brandt, Matthew R.; Freeman, Ted J., Turbine shroud segment with flange-facing perimeter seal.
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O'Leary, Mark; Vetters, Daniel K.; Brandt, Matthew R.; Freeman, Ted J., Turbine shroud segment with integrated cooling air distribution system.
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O'Leary, Mark; Vetters, Daniel K.; Brandt, Matthew R.; Freeman, Ted J., Turbine shroud segment with load distribution springs.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Turbine shroud sealing apparatus 원문보기