Wake reduction structure for enhancing cavity flow in generator rotor endwindings
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02K-001/32
H02K-009/00
H02K-009/06
H02K-003/24
H02K-005/18
출원번호
US-0742281
(2000-12-22)
발명자
/ 주소
Salamah, Samir Armando
Wetzel, Todd Garrett
Vandervort, Christian Lee
Jarczynski, Emil Donald
Turnbull, Wayne Nigel Owen
출원인 / 주소
General Electric Company
대리인 / 주소
Nixon & Vanderhye PC
인용정보
피인용 횟수 :
7인용 특허 :
34
초록▼
A gas cooled dynamoelectric machine is provided that is comprised of a rotor, a rotor winding comprising axially extending coils and concentric endwindings, and a plurality of spaceblocks located between adjacent endwindings thereby to define a plurality of cavities, each bounded by adjacent spacebl
A gas cooled dynamoelectric machine is provided that is comprised of a rotor, a rotor winding comprising axially extending coils and concentric endwindings, and a plurality of spaceblocks located between adjacent endwindings thereby to define a plurality of cavities, each bounded by adjacent spaceblocks and adjacent endwindings. To enhance the heat transfer rate from the copper end turns of the field endwinding region, at least one spaceblock has a trailing edge or downstream wall contoured to reduce generated wake. In a preferred embodiment, the trailing edge has an aerodynamic contour to reduce the extent and strength of the generated wake.
대표청구항▼
1. A gas cooled dynamoelectric machine, comprising: a rotor having a body portion, said rotor having axially extending coils and end turns defining a plurality of endwindings extending axially beyond at least one end of said body portion; and at least one spaceblock located between adjacent said
1. A gas cooled dynamoelectric machine, comprising: a rotor having a body portion, said rotor having axially extending coils and end turns defining a plurality of endwindings extending axially beyond at least one end of said body portion; and at least one spaceblock located between adjacent said endwindings so as to define a cavity therebetween, said spaceblock having first and second sidewall portions engaging said adjacent endwindings, an upstream wall, and a downstream wall, said downstream wall of said spaceblock having a convexly curved, aerodynamic contour for reducing the extent and strength of the generated wake. 2. The dynamoelectric machine of claim 1, wherein said downstream wall is defined as a generally parabolic curve. 3. The dynamoelectric machine of claim 1, wherein said upstream wall is generally planar. 4. The dynamoelectric machine of claim 1, wherein said spaceblock is comprised of a generally rectangular main body portion and a protrusion portion, said main body portion defining said upstream wall and said sidewall portions, and said protrusion portion defining said downstream wall. 5. The dynamoelectric machine of claim 4, wherein said downstream wall is defined as a generally parabolic curve. 6. The dynamoelectric machine of claim 4, wherein said upstream wall is generally planar. 7. The dynamoelectric machine of claim 4, wherein said protrusion portion is integrally formed with said main body portion. 8. A gas cooled dynamoelectric machine, comprising: a rotor having a spindle and a body portion; a rotor winding comprising axially extending coils disposed on said body portion and spaced, concentric endwindings extending axially beyond at least one end of said body portion, said endwindings and said spindle defining an annular space therebetween; a plurality of spaceblocks located between adjacent ones of said endwindings thereby to define a plurality of cavities, each bounded by adjacent spaceblocks and adjacent endwindings and open to said annular space; and each said spaceblock having first and second sidewall portions engaging said adjacent endwindings, an upstream wall, and a downstream wall, said downstream wall of at least one of said spaceblocks having convexly curved, aerodynamic contour for reducing the extent and strength of the generated wake. 9. The dynamoelectric machine of claim 8, wherein said non-planar downstream wall is defined as a generally parabolic curve. 10. The dynamoetectric machine of claim 8, wherein said upstream wall of each said spaceblock is generally planar. 11. The dynamoelectric machine of claim 8, wherein said at least one spaceblock is comprised of a generally rectangular main body portion and a protrusion portion, said main body portion defining said upstream wall and said sidewall portions, and said protrusion portion defining said convexly curved, aerodynamic downstream wall. 12. The dynamoelectric machine of claim 11, wherein said downstream wall is defined as a generally parabolic curve. 13. The dynamoelectric machine of claim 11, wherein said upstream wall is generally planar. 14. The dynamoelectric machine of claim 11, wherein said protrusion portion is integrally formed with said main body portion. 15. The dynamoelectric machine of claim 1, further comprising a rotor spindle extending axially beyond said at least one end of said body portion and defining an annular space with said endwindings, and wherein said at least one spaceblock extends radially into said annular space. 16. The dynamoelectric machine of claim 8, wherein said plurality of spaceblocks extend radially into said annular space.
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이 특허에 인용된 특허 (34)
Sismour ; Jr. Albert C. (Casselberry FL) Hagaman Robert T. (Oviedo FL) Ying Sui-Chun (Winter Springs FL), Apparatus and method for thermal balancing of the rotor of a dynamo-electric machine.
Carreno Diether E. (Schenectady NY) Myers Albert (Amsterdam NY) Palmer Gene D. (Clifton Park NY) Caruso Philip M. (Selkirk NY) Wilson Ian D. (Clifton Park NY) Hemsworth Martin C. (Cincinnati OH), Closed or open circuit cooling of turbine rotor components.
Darby William L. (Scotia NY) Monz Robert H. (Schenectady NY) Molis Stephen J. (Schenectady NY), Cooling arrangement for rotor end turns of reverse flow cooled dynamoelectric machines.
Christopher Anthony Kaminski ; Emil Donald Jarczynski ; William H. Boardman ; James Michael Fogarty, Cooling ventilation circuit for rotor end winding and slot end region cooling.
Kazmierczak Edmund E., Direct gas cooled longitudinal/cross-flow rotor endwinding ventillation scheme for rotating machines with concentric coil rotors.
Moore William G. (Winter Springs FL) Jones Warren W. (Geneva FL) Larue John C. (Orlando FL), End winding bracing system for gas-cooled rotors of large generators.
Wayne Nigel Owen Turnbull ; Todd Garrett Wetzel ; Christian Lee Vandervort ; Samir Armando Salamah ; Emil Donald Jarczynski, Flow-through spaceblocks with deflectors and method for increased electric generator endwinding cooling.
Emil Donald Jarczynski ; Todd Garrett Wetzel ; Christian Lee Vandervort ; Samir Armando Salamah ; Wayne Nigel Owen Turnbull, Gas cooled endwindings for dynamoelectric machine rotor and endwinding cool method.
Christian Lee Vandervort ; Todd Garrett Wetzel ; Emil Donald Jarczynski ; Samir Armando Salamah ; Wayne Nigel Owen Turnbull, Generator endwinding cooling enhancement.
Gutsche Gunter E. (5175 Rue Forget ; Box 666 St. Louis de Terrebonne ; Quebec CAX J0N 1N0), Method and apparatus for use in harnessing solar energy to provide initial acceleration and propulsion of devices.
Salamah, Samir Armando; Wetzel, Todd Garrett; Vandervort, Christian Lee; Jarczynski, Emil Donald; Turnbull, Wayne Nigel Owen, Re-entrant spaceblock configuration for enhancing cavity flow in rotor endwinding of electric power generator.
Todd Garrett Wetzel ; Emil Donald Jarczynski ; Christian Lee Vandervort ; Samir Armando Salamah ; Wayne Nigel Owen Turnbull, Spaceblock deflector for increased electric generator endwinding cooling.
Todd Garrett Wetzel ; Emil Donald Jarczynski ; Christian Lee Vandervort ; Samir Armando Salamah ; Wayne Nigel Owen Turnbull, Spaceblock scoops for enhanced rotor cavity heat transfer.
Karhan Barry L. (Ballston Lake NY) Archibald James B. (Schenectady NY), Stator core with axial and radial cooling for dynamoelectric machines wth air-gap stator windings.
Moore William G. (Monroeville PA) Eckels Phillip W. (Penn Hills Township ; Allegheny County PA) Jugan Michael R. (Duquesne PA), Superconducting rotor with end turn region intermittent support and cooling assembly.
Hamstra Jeffrey William ; McCallum Brent Neal ; Sylvester Thomas Gerard ; Denner Brett Willian ; Moorehouse Jeffrey Allen, Transition shoulder system and method for diverting boundary layer air.
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