[특허]Blade tip clearance control apparatus for a gas turbine engine

Blade tip clearance control apparatus for a gas turbine engine 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01D-011/08
출원번호	US-0405369 (1989-09-08)
발명자 / 주소	Ciokajlo John J. (Cincinnati OH)
출원인 / 주소	General Electric Company (Cincinnati OH 02)
인용정보	피인용 횟수 : 41 인용 특허 : 0

초록 ▼

A mechanical clearance control apparatus is operable for controlling the clearance between the rotor blade tips and the casing shroud of a gas turbine engine. The apparatus includes a shroud segment which defines a circumferential portion of the casing shroud and is disposed in an opening defined by a mounting section of the stationary casing, a channel defined between radially spaced portions of the shroud segment and the stationary casing mounting section, and a wave spring disposed in the channel and preloaded against the shroud segment and mounting section for biasing the shroud segment to move radially inward toward the rotor. Flanges on opposite sides of the shroud segment and on the stationary casing mounting section at opposite sides of the opening cooperate to define inner and outer limits of radial movement of the shroud segment as the shroud segment is moved toward and away from the rotor. A mechanism is rotatably mounted to the stationary casing mounting section, threadably coupled to the shroud segment and pivotaly linked to a unison ring for moving the shroud segment toward and away from the rotor to set the clearance between the shroud segment and the rotor blade tips upon rotational movement of the unison ring.

대표청구항 ▼

In a gas turbine engine including a rotatable rotor having a row of blades with outer tips and a stationary casing with a shroud and being disposed in concentric relation with said rotor, an apparatus for controlling the clearance between said rotor blade tips and casing shroud, said apparatus comprising: (a) a shroud segment defining a circumferential portion of said casing shroud, being separate from and disposed in an opening defined in said stationary casing; (b) a channel defined between radially spaced portions of said stationary casing and said shroud segment; (c) means disposed in said channel and being preloaded against said spaced portions of said stationary casing and said shroud segment for biasing said shroud segment to move radially inwardly toward said rotor; and (d) a mechanism coupled to said shroud segment and said stationary casing and being operable for radially moving said shroud segment toward and away from said rotor to reach a selected position relative to said rotor at which a desired clearance is established between said shroud segment and said rotor blade tips, said mechanism further being operable for holding said shroud segment at said selected position to maintain said desired clearance between said shroud segment and said rotor blade tips; (e) said mechanism including at least a pair of threaded drive members rotatably mounted to said stationary casing, said shroud segment including an elongated arcuate body and a pair of threaded connectors spaced from one another and fixedly attached on said arcuate body, said connectors threadably coupled to said drive members such that rotation of said drive members in one direction causes radial movement of said shroud segment toward said rotor, whereas rotation of said drive members in an opposite direction causes radial movement of said shroud segment away from said rotor.

이 특허를 인용한 특허 (41)

McCaffrey, Michael G., Adjustable blade outer air seal apparatus.
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Dierksmeier, Douglas David; Heffernan, Tab Michael, Apparatus and method for active control of blade tip clearance.
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Penda, Allan R.; Burge, Joseph C., Blade clearance control.
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Ottow, Nathan W., Blade clearance control for gas turbine engine.
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Ress ; Jr. Robert A., Blade clearance control for turbomachinery.
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Phillips, Richard W.; Stay, Chad P.; Harrison, Martin; Wherritt, Peter, Blade tip clearance measurement sensor for gas turbine engines.
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Phillips, Richard W.; Stay, Chad P.; Harrison, Martin; Wherritt, Peter, Blade tip clearance measurement sensor for gas turbine engines.
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Moniz, Thomas Ory; Rose, Joseph George, Centrifugal compressor assembly for use in a turbine engine and method of assembly.
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Klingels, Hermann, Clearance control system, turbomachine and method for adjusting a running clearance between a rotor and a casing of a turbomachine.
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Klingels, Hermann, Clearance control system, turbomachine and method for adjusting a running clearance between a rotor and a casing of a turbomachine.
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Robert Paul Czachor ; William Carl Ruehr, Fan casing liner support.
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Dabbs, Thurman C; Knapp, James N, Floating blade outer air seal assembly for gas turbine engine.
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Schwarz, Frederick M.; Smith, J. Walter, Gas turbine engine blade tip clearance apparatus and method.
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Schwarz,Frederick M.; Smith,J. Walter, Gas turbine engine blade tip clearance apparatus and method.
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Day, Christophe Jude; Poranski, Christopher Francis; Thompson, James Edward; Laubenthal, Jeffrey Scott; Mazuk, James L.; Smith, Vernon Leroy, Gas turbine engine spring mounted manifold.
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Chehab, Abdullatif M.; Waechter, Scott T.; Light, Kevin M.; Terpos, Brian H.; Pu, Zhengxiang, Inner ring with independent thermal expansion for mounting gas turbine flow path components.
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Glaves, Garry Bruce; Foreman, Michael Christopher, Liner coupling pin.
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Glaves, Garry Bruce; Foreman, Michael Christopher, Liner coupling pin.
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Simpson, Stanley Frank; Gilchrist, George Martin; Genovese, William Michael, Method and apparatus for determining clearance between moving and static members in a machine.
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Turnquist,Norman Arnold; Sarshar,Hamid Reza; Fang,Biao; Demiroglu,Mehmet; Couture,Bernard Arthur; Gazzillo,Clement; Sevincer,Edip, Method and apparatus for turbomachine active clearance control.
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Plunkett, Timothy T.; Hershey, John E.; Osborn, Brock E.; Seitzer, Kenneth E.; Taylor, Keith K., Method, system, and apparatus for reducing a turbine clearance.
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Dong,Zhifeng; Epstein,Michael J.; Royal,Glen William; Albers,Robert J., Methods and apparatus for maintaining rotor assembly tip clearances.
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Powell, Brad, Movable air seal for gas turbine engine.
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Sexton Brendan F. ; Knuijt Hans M. ; Eldrid Sacheverel Q. ; Myers Albert ; Coneybeer Kyle E. ; Johnson David Martin ; Kellock Iain R., Removable inner turbine shell and bucket tip clearance control.
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Sexton Brendan F. (Clifton Park NY) Knuijt Hans M. (Niskayuna NY) Eldrid Sacheverel Q. (Saratoga Springs NY) Myers Albert (Amsterdam NY) Coneybeer Kyle E. (Schenectady NY) Johnson David Martin (Balls, Removable inner turbine shell with bucket tip clearance control.
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Sexton Brendan F. ; Knuijt Hans M. ; Eldrid Sacheverel Q. ; Myers Albert ; Coneybeer Kyle E. ; Johnson David Martin ; Kellock Iain R., Removable inner turbine shell with bucket tip clearance control.
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Sexton Brendan F. ; Knuijt Hans M. ; Eldrid Sacheverel Q. ; Myers Albert ; Coneybeer Kyle E. ; Johnson David Martin ; Kellock Iain R., Removable inner turbine shell with bucket tip clearance control.
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Sexton Brendan F. ; Knuijt Hans M. ; Eldrid Sacheverel Q. ; Myers Albert ; Coneybeer Kyle E. ; Johnson David Martin ; Kellock Iain R., Removable inner turbine shell with bucket tip clearance control.
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Sexton Brendan F. ; Knuijt Hans M. ; Eldrid Sacheverel Q. ; Myers Albert ; Coneybeer Kyle E. ; Johnson David Martin ; Kellock Iain R., Removable inner turbine shell with bucket tip clearance control.
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Carpenter Kevin D. (Tequesta FL) Wiedemer John D. (Wellington FL) Smith ; Jr. Paul A. (Palm Beach Gardens FL), Rotor blade outer tip seal apparatus.
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Ghasripoor,Farshad; Lokhandwalla,Murtuza; Chupp,Raymond Edward; Bhate,Nitin, Sealing device and method for turbomachinery.
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Bianchi, Stefano; Namgoong, Howoong, Sensor system having a sensor supported by a mast for use within fluid flows.
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Klingler, Brett Darrick, Turbine assembly and method for supporting turbine components.
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O'Leary, Mark, Turbine blade tip clearance apparatus and method.
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O'Leary, Mark, Turbine blade tip clearance system.
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Duguay, Brian; Davis, Timothy M., Turbine engine tip clearance control system with later translatable slide block.
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Duguay, Brian; Davis, Timothy M., Turbine engine tip clearance control system with rocker arms.
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Hall, Christopher, Unison ring self-centralizers and method of centralizing.
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Pankey, William W.; Wilson, Jr., Jack W., Vane segment tip clearance control.
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Harris, Meggan, Variable blade outer air seal.
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Manzoori, Reza, Variable displacement turbine liner.
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Blade tip clearance control apparatus for a gas turbine engine 원문보기

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Blade tip clearance control apparatus for a gas turbine engine 원문보기

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