[특허]Gas turbine engine steam injection manifold

General Electric Company

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특허 상세정보

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Gas turbine engine steam injection manifold

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02C-007/00
미국특허분류(USC)	060/039.53;
출원번호	US-0696241 (2010-01-29)
등록번호	US-8387358 (2013-03-05)
발명자 / 주소	Danis, Allen Michael Marakovits, Steven Stiftar, Edward Joseph
출원인 / 주소	General Electric Company
인용정보	피인용 횟수 : 3 인용 특허 : 19

초록
▼

A gas turbine engine steam injector includes an annular steam injection manifold aftwardly bounded by an aft manifold wall having steam injection holes disposed therethrough and located axially aft and radially inwardly of a diffuser outlet. An outer baffle wall around manifold has a curved convex surface which may generally conform to a streamline emanating from outlet. Holes may be circumferentially evenly distributed and non-uniformly sized around the aft manifold wall. Hollow struts extend between radially outer and inner bands of a diffuser and a steam supply header in steam supply communication with a fluid passage of at least one of the struts having a passage outlet open to steam cavity within cavity casing located inwardly of inner band. Openings are disposed in an aft cavity wall between cavity and the injector. Passages may be in only a non-uniformly distributed portion of the struts adjacent to each other.

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1. A gas turbine engine steam injector comprising: an annular steam injection manifold located upstream of a gas turbine engine combustor and aftwardly bounded by an aft manifold wall,the aft manifold wall located axially aft and radially inwardly of a diffuser outlet, andsteam injection holes disposed through and circumferentially around the aft manifold wall and located axially aft and radially inwardly of the diffuser outlet. 2. A steam injector as claimed in claim 1, further comprising the steam injection holes being circumferentially evenly distributed around the aft manifold wall. 3. A steam injector as claimed in claim 2, further comprising: the annular steam injection manifold circumscribing a centerline,the steam injection holes facing axially aftwardly or downstream, andnormals perpendicular to aft planes of the steam injection holes and generally parallel to the centerline. 4. A steam injector as claimed in claim 2, further comprising the steam injection holes being non-uniformly sized around the aft manifold wall. 5. A steam injector as claimed in claim 4, further comprising the steam injection holes having non-uniform exit areas. 6. A steam injector as claimed in claim 5, further comprising: the annular steam injection manifold circumscribing a centerline,the steam injection holes being circular and having non-uniform diameters facing axially aftwardly or downstream, andnormals perpendicular to the exit areas of the steam injection holes and generally parallel to the centerline. 7. A steam injector as claimed in claim 1, further comprising an annular baffle having an annular radially outer baffle wall radially outwardly bounding the steam injection manifold and narrowing in an aftwardly or downstream direction and the outer baffle wall having a curved convex surface. 8. A steam injector as claimed in claim 7, further comprising the curved convex surface generally conforming to a streamline emanating from the diffuser outlet of a diffuser. 9. A steam injector as claimed in claim 8, further comprising the steam injection holes being circumferentially evenly distributed around the aft manifold wall. 10. A steam injector as claimed in claim 9, further comprising the steam injection holes being non-uniformly sized around the aft manifold wall. 11. A steam injector as claimed in claim 10, further comprising the steam injection holes having non-uniform exit areas. 12. A steam injector as claimed in claim 11, further comprising: the annular steam injection manifold circumscribing a centerline,the steam injection holes being circular and having non-uniform diameters facing axially aftwardly or downstream, andnormals perpendicular to the exit areas of the steam injection holes and generally parallel to the centerline. 13. A gas turbine engine steam injection system comprising: a diffuser including radially outer and inner bands and hollow struts extending therebetween,an annular outer steam supply header spaced radially outwardly of the diffuser in steam supply communication with a fluid passage of at least one of the struts,a passage outlet of the fluid passage open to a steam cavity within an annular cavity casing located radially inwardly of the inner band,an annular steam injector including an annular steam injection manifold aftwardly bounded by an aft manifold wall,openings in an aft cavity wall between the steam cavity and the steam injector,the aft manifold wall located axially aft and radially inwardly of a diffuser outlet of the diffuser, andsteam injection holes disposed through and circumferentially around the aft manifold wall. 14. A steam injection system as claimed in claim 13, further comprising: the annular outer steam supply header in steam supply communication with fluid passages in only a portion of the struts,the portion of the struts being circumferentially non-uniformly distributed around the diffuser, andthe steam injection holes being circumferentially evenly distributed and non-uniformly sized around the aft manifold wall. 15. A steam injection system as claimed in claim 14, further comprising the steam injection holes having non-uniform exit areas. 16. A steam injection system as claimed in claim 15, further comprising: the annular steam injection manifold circumscribing a centerline,the steam injection holes being circular and having non-uniform diameters facing axially aftwardly or downstream, andnormals perpendicular to the exit areas of the steam injection holes and generally parallel to the centerline. 17. A steam injection system as claimed in claim 13, further comprising an annular baffle having an annular radially outer baffle wall radially outwardly bounding the steam injection manifold and narrowing in an aftwardly or downstream direction and the outer baffle wall having a curved convex surface. 18. A steam injection system as claimed in claim 17, further comprising: the annular outer steam supply header in steam supply communication with fluid passages in only a portion of the struts,the portion of the struts being circumferentially non-uniformly distributed around the diffuser, andthe steam injection holes being circumferentially evenly distributed and non-uniformly sized around the aft manifold wall. 19. A steam injection system as claimed in claim 18, further comprising the steam injection holes having non-uniform exit areas. 20. A steam injection system as claimed in claim 19, further comprising: the annular steam injection manifold circumscribing a centerline,the steam injection holes being circular and having non-uniform diameters facing axially aftwardly or downstream, andnormals perpendicular to the exit areas of the steam injection holes and generally parallel to the centerline. 21. A steam injection system as claimed in claim 20, further comprising the curved convex surface generally conforming to a streamline emanating from a diffuser outlet of the diffuser. 22. A steam injection system as claimed in claim 13, further comprising: the annular outer steam supply header in steam supply communication with fluid passages in only a portion of the struts,the struts in the portion being adjacent to each other, andthe steam injection holes being circumferentially evenly distributed and non-uniformly sized around the aft manifold wall. 23. A steam injection system as claimed in claim 22, further comprising the steam injection holes having non-uniform exit areas. 24. A steam injection system as claimed in claim 23, further comprising: the annular steam injection manifold circumscribing a centerline,the steam injection holes being circular and having non-uniform diameters facing axially aftwardly or downstream, andnormals perpendicular to the exit areas of the steam injection holes and generally parallel to the centerline. 25. A steam injection system as claimed in claim 22, further comprising an annular baffle having an annular radially outer baffle wall radially outwardly bounding the steam injection manifold and narrowing in an aftwardly or downstream direction and the outer baffle wall having a curved convex surface. 26. A steam injection system as claimed in claim 18, further comprising: the outer baffle wall extending aftwardly from a forward baffle flange to an aft baffle flange,the forward and aft baffle flanges extending radially inwardly from the outer baffle wall,the aft manifold wall includes a ring flange bolted to the aft baffle flange, andthe steam injection holes circumferentially distributed through and around the aft baffle flange. 27. A steam injection system as claimed in claim 26, further comprising the steam injection holes having non-uniform exit areas. 28. A steam injection system as claimed in claim 27, further comprising: the annular steam injection manifold circumscribing a centerline,the steam injection holes being circular and having non-uniform diameters facing axially aftwardly or downstream, andnormals perpendicular to the exit areas of the steam injection holes and generally parallel to the centerline. 29. A steam injection system as claimed in claim 28, further comprising the curved convex surface generally conforming to a streamline emanating from a diffuser outlet of the diffuser.

이 특허에 인용된 특허 (19)

이 특허를 인용한 특허 피인용횟수: 3

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Gas turbine engine steam injection manifold

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Gas turbine engine steam injection manifold

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이 특허에 인용된 특허 (19)

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