[특허]Integrated steam/air cooling system for gas turbines

Integrated steam/air cooling system for gas turbines 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01D-005/18
출원번호	US-0854580 (1992-03-20)
발명자 / 주소	Cunha Francisco J. (Schenectady NY)
출원인 / 주소	General Electric Company (Schenectady NY 02)
인용정보	피인용 횟수 : 53 인용 특허 : 0

초록 ▼

A steam or air cooled combined cycle gas turbine includes first and second turbine stages and a second nozzle stage. During start-up, cooling air is supplied radially inwardly through the second stage nozzle for flow into the gas flow through the turbine and for combining with cooling air flowing radially outwardly from a high pressure compressor port. The combined air flow flows radially outwardly through the turbine blades. In normal operation, steam in lieu of air flows radially inwardly through the second nozzle stage and radially outwardly between the turbine wheels and spacer therebetween. Part of the steam through the nozzle stage combines with the radially outwardly flowing steam for cooling the turbine blades. The balance of the steam flows into the gas flow through the turbine. Combined steam/air cooling is effected for abnormally high turbine blade temperatures by combining cooling air from the high pressure discharge port of the compressor with the steam flowing radially outwardly through the turbine blades.

대표청구항 ▼

An integrated steam and air cooling system for a gas turbine comprising: a pair of axially spaced, rotatable turbine stages, each having a plurality of turbine blades for disposition in a gas flow through said turbine; a nozzle stage between said turbine stages and including a plurality of nozzle vanes for disposition in the gas flow through said turbine; means for supplying cooling air to and for passage through said blades and vanes to air cool said turbine; means for supplying steam to and for passage through said blades and vanes to steam cool said turbine; means cooperable with said cooling air supply means and said steam supply means for effecting a transition between air cooling said turbine and steam cooling said turbine; a turbine shaft, said blades and said vanes having interior passages, a spacer between said turbine stages and rotatable therewith, wheels about said shaft mounting said turbine blades and spaced axially from and on opposite sides of said spacer to define chambers on axially opposite sides of said spacer, said steam supplying means including first and second steam supply circuits, said first circuit including a steam supply, a channel adjacent said shaft and in communication with said steam supply for suppling steam to said chamber and said interior passages of said turbine blades, said second steam supply circuit including said steam supply, a manifold about said nozzle vanes for supplying steam from said steam supply to said interior passages of said nozzle vanes, means in communication between said interior passages of said nozzle vanes and said chambers for combining steam from said first circuit in said chambers with steam of said second circuit in said chambers, whereby the combined steam of said first and second circuits flows through the interior passages of said turbine blades.

이 특허를 인용한 특허 (53)

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Hidaka, Kishio; Nakamura, Shigeyoshi; Fukui, Yutaka; Shiga, Masao; Hiraga, Ryo; Toriya, Hajime; Fujita, Toshio, Gas turbine for power generation, and combined power generation system.
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Khanin, Alexander Anatolievich; Kostege, Valery, Gas turbine of the axial flow type.
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Liang, George, Gas turbine sealing apparatus.
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Sakamoto, Yasuro; Ito, Eisaku; Wakazono, Susumu; Ishizaka, Koichi; Machida, Yukinori, Gas turbine with an air bleeder tube.
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Moore Jack D. ; Steinebronn Brad A., Gas turbine with steam cooling and fuel atomization.
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Cunha Francisco J. (Schenectady NY), Impingement cooling for turbine stator vane trailing edge.
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Salunkhe, Anil L.; Orosa, John A.; Shteyman, Yevgeniy; Han, Lijuan; Delisa, III, Matthew J.; Riveros, Daniel F., Industrial gas turbine exhaust system diffuser inlet lip.
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Kvasnak, William S.; LaFleur, Ronald S.; Soechting, Friedrich O.; Joe, Christopher R.; Moroso, Joe; Hayes, Douglas A., Method and apparatus for cooling a wall within a gas turbine engine.
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William S. Kvasnak ; Ronald S. LaFleur ; Friedrich O. Soechting ; Christopher R. Joe ; Joe Moroso ; Douglas A. Hayes, Method and apparatus for cooling a wall within a gas turbine engine.
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Wilkes, Colin, Method and apparatus for operating a turbine engine.
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Bergholz, Robert Frederick, Methods and apparatus for controlling cooling air temperature in gas turbine engines.
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West, James Anthony; Kraemer, Gilbert Otto; Johnson, David Martin, Methods and apparatus for cooling gas turbine engine components.
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Gardiner, Barrett David, Nitrogen cooled gas turbine with combustor nitrogen injection and partial nitrogen recycling.
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Chopra, Sanjay; Boss, Michael Joseph; Kim, Tai Joung; Mortzheim, Jason Paul; Sanchez, Nestor Hernandez; Brilliant, Howard Michael, Nozzle diaphragm inducer.
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Raymond Joseph Jones ; Francis Lawrence Kirkpatrick ; James Lee Burns ; John Robert Fulton, Pyrometer mount for a closed-circuit thermal medium cooled gas turbine.
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Kazuo Uematsu JP; Katsunori Tanaka JP; Kazuharu Hirokawa JP, Recovery type steam cooled gas turbine.
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Malmborg, Eric W., Rotor assembly disk spacer for a gas turbine engine.
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Gurao, Manish S.; Light, Kevin M.; Abdo, Zafir A. M., Rotor disc with fluid removal channels to enhance life of spindle bolt.
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Suciu, Gabriel L.; Dye, Christopher M.; Ackermann, William K.; Muron, Stephen P.; Alvanos, Ioannis; Merry, Brian D.; Salve, Arthur M.; Norris, James W., Secondary flow arrangement for slotted rotor.
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Uematsu Kazuo,JPX ; Suenaga Kiyoshi,JPX, Stationary blade of gas turbine.
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Fukue Ichiro,JPX ; Akita Eiji,JPX ; Tomita Yasuoki,JPX, System for cooling blades in a gas turbine.
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Liang, George; Gu, Xubin, Turbine airfoil cooling system with spanwise equalizer rib.
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Manteiga, John Alan; Parks, Robert John; Hernandez, Wilhelm; Murphy, Patrick, Turbine frame assembly and method for a gas turbine engine.
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Liang, George, Turbine vane with rim cavity seal.
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Cunha Francisco J., turbine stator vane segments having leading edge impingement cooling circuits.
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Integrated steam/air cooling system for gas turbines 원문보기

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