EP0192266A2
Expired / Lapsed
EP
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Gas turbine combustor
Assignee: Hitachi Ltd
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Filing: 1986-02-20
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Granted: —
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Expires: 2006-02-20
Abstract
Abstract A gas turbine combustor having a head combustion chamber (7) and a rear combustion chamber (11), with a plurality of air supply ports (13) arranged in a circumferential wall of the rear combustion chamber (11), and a fuel nozzle (9). An outer cylinder (5) forms a cylindrical air flow passage between the inner cylinder (6) and the outer cylinder (5). A cylindrical control member (28) is provided which is adapted to be movable in an axial direction for regulating an opening of the air supply ports (13). The control member (28) during the axial movement of the control member (28) is supported by a supporting means which is adapted to maintain a gap between the control member and the wall of the rear combustion chamber. The supporting member includes a flexible member (32a, 32b) for absorbing a deformation of the control member (28) so that it is possible to prevent, if not avoid, mechanical wear on the control member and to reduce the No x concentration as well as obtain a highly reliable operation of the gas turbine combustor.
Inventors
- 👤 Nobuyuki Iizuka
- 👤 Katsukuni Hisano
- 👤 Katsuo Wada
- 👤 Masashi Kunihiro
- 👤 Fumiyuki Hirose
- 👤 Yoji Ishibashi
- 👤 Isao Sato
- 👤 Osamu Arai
- 👤 Hiroshi Inose
- 👤 Osamu Sakuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 10:19
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/26
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
213 words
A gas turbine combustor including air flow rate control means, the combustor (3) comprising: an inner cylinder means (6) for forming a combustion chamber means therein with a plurality of air supply ports (13) in a circumferential wall thereof, fuel nozzle means (9) for supplying a fuel into the combustion chamber means, outer cylinder means (5) provided along an exterior of the inner cylinder means (6) for forming a space for air passage between an outer surface of the inner cylinder means (6) and an inner surface of the outer cylinder means (5), control means (28) provided on an outer side of the inner cylinder means and adapted to be movable substantially in an axial direction of the inner cylinder means for regulating the opening of the air supply ports (13), flexible means (32a, 32b) for supporting the control means (28) in order to maintain the gap between the control means (28) and an exterior of the air supply ports (13) on the inner cyl i n der means (6) and for allowing a movement of the control means (28) substantially in the axial direction of the inner cylinder means (6), and drive means (30a, 30b) for moving the control means (28) substantially in the axial direction of the inner cylinder means (6).
Claim 2
Dependent Claim
213 words
A gas turbine combustor including air flow rate control means, the combustor (3) comprising: an inner cylinder means (6) for forming a combustion chamber means therein with a plurality of air supply ports (13) in a circumferential wall thereof, fuel nozzle means (9) for supplying a fuel into the combustion chamber means, outer cylinder means (5) provided along an exterior of the inner cylinder means (6) for forming a space for air passage between an outer surface of the inner cylinder means (6) and an inner surface of the outer cylinder means (5), control means (28) provided on an outer side of the inner cylinder means and adapted to be movable substantially in an axial direction of the inner cylinder means for regulating the opening of the air supply ports (13), flexible means (32a, 32b) for supporting the control means (28) in order to maintain the gap between the control means (28) and an exterior of the air supply ports (13) on the inner cyl i n der means (6) and for allowing a movement of the control means (28) substantially in the axial direction of the inner cylinder means (6), and drive means (30a, 30b) for moving the control means (28) substantially in the axial direction of the inner cylinder means (6).
Claim 3
Dependent Claim
70 words
A gas turbine combustor as claimed in claim 1, wherein the inner cylinder means (6) is formed by a head combustion chamber (7) and a rear combustion chamber (11) having a larger diameter than a diameter of the head combustion chamber (7), and wherein the control means (28) is cylindrically shaped and is disposed around an exterior of the air supply ports (13) provided on the rear combustion chamber (11).
Claim 4
Dependent Claim
82 words
A gas turbine combustor as claimed in claim 1, wherein the control means (28) is cylindrically shaped and surrounds the air supply ports in the combustion chamber, the flexible means ( 3 2a, 32b) is circularly-shaped and has a larger diameter than a diameter of the control means (28), and the flexible means is connected with the drive means through a second flexible means spaced in an axial direction of the inner cylinder means (6) with respect to the first flexible means.
Claim 5
Dependent Claim
92 words
A gas turbine combustor as claimed in claim 2, wherein the flexible means includes a plurality of laminated circular spring members (32a, 32b), first blocks (31) and second movable blocks (30a, 30b) are connected to each other by said circular spring members (32a, 32b), the first blocks (31) are fastened to the outer cylinder means (5) and the second movable blocks (30a, 30b) are connected to an exterior of the control means (28) through a plurality of support means (29) disposed in a radial direction of the circular spring members (32a, 32b).
Claim 6
Dependent Claim
61 words
A gas turbine combustor as claimed in claim 2, wherein the drive means includes a cam means (39) disposed on one of the cylinder means, a transfer means for positioning the cam means, and a link means (37) including a roller (38) contacting the cam means (39) and being adapted to be operable by a movement of the cam means (39).
Claim 7
Dependent Claim
48 words
A gas turbine combustor as claimed in claim 4, wherein the laminated circular spring members (32a, 32b) have a wave-shape configuration defined by alternating concave and convex portions (131, 132) alongat least a portion of a circumferential direction thereof for allowing a deflection in an axial direction thereof.
Claim 8
Dependent Claim
76 words
A gas turbine combustor as claimed in claim 1, wherein a plurality of inner cylinder means are provided inside the outer cylinder means (53), control means are associated with each inner cylinder means, with the control means for the respective cylinder means being connected with the drive means (44) through a circular regulating member (40) adapted to be movable in a circumferential direction and provided at an exterior thereof with the plurality of inner cylinder means.
Claim 9
Dependent Claim
226 words
A gas turbine combustor for a two-step combustion system, the gas turbine combustor comprising: an inner cylinder means (6) forming a head combustion chamber (7) and a rear combustion chamber (11) having a larger diameter than a diameter of the head combustion chamber (7); a plurality of air supply ports (13) disposed in a circumferential wall of the rear combustion chamber (11); fuel nozzle means (9) provided in the head combustion (7) chamber for supplying a fuel into the inner cylinder means (6); an outer cylinder means (5) provided on an exterior of the inner cylinder means (6) for forming a space defining an air passage between the outer surface of the inner cylinder-means (6) and an inner surface of the outer cylinder means (5); a control means (28) on an outer side of the inner cylinder means and adapted to be movable substantially in an axial direction of the inner cylinder means for regulating an opening of the air supply ports (13); means for supporting the control means in order to maintain a gap between the control means (28) and an exterior of the air supply port (13) including flexible members (32a, 32b) for absorbing a deformation of the control means (28) by deflection thereof to allow a movement of the control means (28) substantially in an axial direction of the inner cylinder means (6).
Claim 10
Dependent Claim
226 words
A gas turbine combustor for a two-step combustion system, the gas turbine combustor comprising: an inner cylinder means (6) forming a head combustion chamber (7) and a rear combustion chamber (11) having a larger diameter than a diameter of the head combustion chamber (7); a plurality of air supply ports (13) disposed in a circumferential wall of the rear combustion chamber (11); fuel nozzle means (9) provided in the head combustion (7) chamber for supplying a fuel into the inner cylinder means (6); an outer cylinder means (5) provided on an exterior of the inner cylinder means (6) for forming a space defining an air passage between the outer surface of the inner cylinder-means (6) and an inner surface of the outer cylinder means (5); a control means (28) on an outer side of the inner cylinder means and adapted to be movable substantially in an axial direction of the inner cylinder means for regulating an opening of the air supply ports (13); means for supporting the control means in order to maintain a gap between the control means (28) and an exterior of the air supply port (13) including flexible members (32a, 32b) for absorbing a deformation of the control means (28) by deflection thereof to allow a movement of the control means (28) substantially in an axial direction of the inner cylinder means (6).
Claim 11
Dependent Claim
23 words
A gas turbine combustor as claimed in claim 8, wherein the supporting means comprises a plurality of laminated circularly-shaped spring members (32a, 32b).
Claim 12
Dependent Claim
35 words
A gas turbine combustor as claimed in claim 9, wherein the laminated circularly-shaped spring members (32a, 32b) are wave- shaped (131, 132) for allowing a deflection of the spring members in an axial direction thereof.
Claim 13
Dependent Claim
45 words
A gas turbine combustor as claimed in claim 8, wherein the control means (28) is cylindrically shaped and disposed around the air supply ports (13) on the rear combustion chamber (11), the flexible members (32a, 32b) are spaced axially along the inner cylinder means (6).
Claim 14
Dependent Claim
42 words
A gas turbine combustor as claimed in claim 9, wherein the laminated circular-shaped spring members (32a, 32b) have a wave-shape (131, 132) having alternating convex and concave portions along a circumferential direction thereof for allowing a deflection in an axial direction thereof.
Claim 15
Dependent Claim
64 words
A gas turbine combustor as claimed in claim 8, wherein the drive means includes a cam means (39) disposed on the outer cylinder means (5), a transfer means for positioning the cam means and a link means (37) including a roller (3 3 ) adapted to contact the cam means (39) and adapted to be operated by a movement of the cam means (39).
Claim 16
Dependent Claim
85 words
A gas turbine combustor as claimed in claim 8, wherein a plurality of inner cylinder means (53) are provided and disposed inside the outer cylinder means, a plurality of control means are provided, each associated with respective inner cylinder means, each of said control means are connected with the drive means (44) through a circular regulating means (40), said regulating means being adapted to be movable in a circumferential direction of the regulating means and being provided exteriorly or the plurality of inner cylinder means.
Claim 17
Dependent Claim
91 words
15 . A gas turbine combustor as claimed in claim 9, wherein the control means is disposed in the space for defining the air passage between the outer surface of the inner cylinder means and the inner surface of the outer cylinder means, said control means is cylindrically shaped and surrounds the air supply ports on the rear combustion chamber, and the flexible member is located in the space for defining the air passage and is of a circular shape having a larger diameter than a diameter of the control means.
Claim 18
Dependent Claim
44 words
A gas turbine combustor as claimed in claim 9 , further comprising a compressor for compressing air to be supplied to the compressor, and a turbine means driven by products of combustion produced in the combustor, and a load connected to the turbine means.
References Cited (Backward Citations)
No citation records indexed.
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