US20100303608A1 - Two-shaft gas turbine - Google Patents
Two-shaft gas turbine Download PDFInfo
- Publication number
- US20100303608A1 US20100303608A1 US11/528,690 US52869006A US2010303608A1 US 20100303608 A1 US20100303608 A1 US 20100303608A1 US 52869006 A US52869006 A US 52869006A US 2010303608 A1 US2010303608 A1 US 2010303608A1
- Authority
- US
- United States
- Prior art keywords
- gas
- struts
- intermediate duct
- pressure turbine
- strut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
- F01D25/162—Bearing supports
Definitions
- the present invention relates to a gas turbine including a plurality of shafts arranged on the same axis.
- a typical gas turbine (not shown) includes a compressor, a combustor, and a turbine.
- air is compressed by the compressor and is supplied to the combustor, where the compressed air is mixed with fuel that is separately supplied and the mixture of the compressed air and the fuel is combusted.
- Combustion gas is generated by combustion and is supplied to the turbine, where energy of the combustion gas is extracted. The energy exerts a rotational driving force for the compressor and a driving force for causing a generator (not shown) to generate electricity. After the rotational driving force is generated by the turbine, the combustion gas is exhausted through an exhaust diffuser.
- FIG. 7 shows an example of a commonly known two-shaft gas turbine used as a jet-engine-derivative gas turbine.
- This gas turbine includes a high-pressure turbine 100 having an annular gas-passage outlet 101 , a low-pressure turbine 102 having an annular gas-passage inlet 103 , an annular intermediate duct 104 that connects the gas-passage outlet 101 to the gas-passage inlet 103 , a journal bearing 105 that supports a rotor of the high-pressure turbine 100 , and a plurality of struts 108 that support the journal bearing 105 .
- the struts 108 are radially arranged along the circumference of the journal bearing 105 and extend though strut covers 107 that are integrated with the intermediate duct 104 in a space between an outer peripheral surface of the journal bearing 105 and an inner peripheral surface of a casing wall 106 that surrounds the intermediate duct 104 .
- the high-pressure turbine 100 functions as a gas generator that generates high-temperature, high-pressure combustion gas for driving the compressor (not shown) and the low-pressure turbine 102 functions as a power turbine that drives a load (not shown) of a generator or the like to collect energy.
- reference numerals 109 and 110 denote first-stage stator blades and first-stage rotor blades, respectively, of the low-pressure turbine 102 .
- the strut covers 107 for preventing the struts 108 from being heated by the high-temperature gas are disposed in the gas passage between the high-pressure turbine 100 and the low-pressure turbine 102 . Therefore, the strut covers 107 and the first-stage stator blades 109 , which are disposed along the gas flow for the first-stage rotor blades 110 , cause aerodynamic loss in the gas passage.
- the strut covers 107 and the first-stage stator blades 109 are arranged in tandem, namely, along the direction of gas flow, the length of the gas passage is increased. Therefore, the length of the low-pressure turbine 102 along the rotor shaft is also increased, which leads to an increase in the size of the gas turbine.
- an object of the present invention is to provide a two-shaft gas turbine that is small and provides improved performance, wherein strut covers and first-stage stator blades are effectively integrated to reduce pressure loss in a gas passage and the length of the gas passage.
- a two-shaft gas turbine includes a high-pressure turbine having an annular gas-passage outlet, a low-pressure turbine having an annular gas-passage inlet, an annular intermediate duct that connects the gas-passage outlet to the gas-passage inlet, a bearing that supports a rotor of the high-pressure turbine and that is attached to a bearing case, and a plurality of struts that support the bearing case.
- the struts are arranged radially along the circumference of the bearing case extend though the intermediate duct in a space between an outer peripheral surface of the bearing case and an inner peripheral surface of a casing wall that surrounds the intermediate duct.
- the intermediate duct has strut covers through which the struts extend and which function as first-stage stator blades of the low-pressure turbine.
- the intermediate duct may be divided into a plurality of segments along the circumference thereof, each segment having one of the strut covers, and the struts may be provided so as to extend through an arbitrary number of the strut covers.
- the intermediate duct may be divided into twenty segments and the struts may be provided so as to extend through ten of the strut covers, the strut covers without the struts and the strut covers having the struts being arranged alternately.
- Each strut cover has a wing-shaped cross section in which the width of a front section of the strut cover gradually increases downstream in the direction of gas flow.
- FIG. 1 is a sectional view of the main portion of a two-shaft gas turbine according to an embodiment of the present invention
- FIG. 2A is a sectional view of an intermediate duct
- FIG. 2B is a perspective sectional view of the intermediate duct
- FIG. 3A is an exploded sectional view of the intermediate duct
- FIG. 3B is an exploded perspective sectional view of the intermediate duct
- FIG. 4A is an exploded sectional view of the intermediate duct in another state
- FIG. 4B is an exploded perspective sectional view of the intermediate duct in another state
- FIG. 5 is a schematic diagram showing the overall structure of the two-shaft gas turbine
- FIG. 6 is a sectional view of FIG. 1 taken along line VI-VI;
- FIG. 7 is a sectional view of the main part of a known two-shaft gas turbine.
- a two-shaft gas turbine includes a compressor 10 , a combustor 11 , a high-pressure turbine 12 that functions as a gas generator, and a low-pressure turbine 13 that functions as a power turbine.
- air is compressed by the compressor 10 and is supplied to the combustor 11 , where the compressed air is mixed with fuel that is separately supplied and the mixture of the compressed air and the fuel is combusted.
- Combustion gas is generated by combustion is supplied to the high-pressure turbine 12 and the low-pressure turbine 13 .
- the high-pressure turbine 12 generates high-temperature, high-pressure combustion gas for driving the compressor 10 at, for example, 5,000 rpm and the low-pressure turbine 13 drives a generator 14 at, for example, 3,000 rpm to collect the energy of the combustion gas.
- the high-pressure turbine 12 and the low-pressure turbine. 13 have an annular gas-passage outlet 15 and an annular gas-passage inlet 16 , respectively, which are connected to each other with an annular intermediate duct 17 .
- a bearing 19 that supports a rotor 18 of the high-pressure turbine 12 is attached to a bearing case 20 that is supported by a plurality of struts 23 .
- the struts 23 are arranged radially along the circumference of the bearing case 20 and extend through strut covers 22 that are integrated with the intermediate duct 17 in a space between an outer peripheral surface of the bearing case 20 and an inner peripheral surface of an intermediate casing wall 21 that surrounds the intermediate duct 17 .
- the high-pressure turbine 12 has a gas passage in which stator blades 25 are supported by an inner casing wall 24 A so as to be arranged in two stages and rotor blades 26 are supported by the rotor 18 at a position between the two stages of stator blades 25 .
- An outer casing wall 24 B of the high-pressure turbine 12 is fixed to the intermediate casing wall 21 with bolts.
- the low-pressure turbine 13 has a gas passage in which stator blades 28 supported by an inner casing wall 27 A and rotor blades 29 supported by a rotor (not shown) are alternately arranged in multiple stages.
- An outer casing wall 27 B of the low-pressure turbine 13 is also fixed the intermediate casing wall 21 with bolts.
- the struts 23 are fixed to the bearing case 20 and the intermediate casing wall 21 at the ends thereof with stud bolts 30 , nuts 31 , and locking bolts (not shown).
- the strut covers 22 of the intermediate duct 17 through which the struts 23 extend function as first-stage stator blades in the low-pressure turbine 13 . Therefore, although first-stage stator blades are disposed in a gas-passage inlet of a low-pressure turbine in a known structure, the first-stage rotor blades 29 are directly provided instead in the present embodiment.
- the intermediate duct 17 is divided into, for example, twenty segments along the circumference thereof, each segment being integrated with a single strut cover 22 .
- the struts 23 are provided so as to extend through, for example, ten strut covers 22 .
- the struts 23 are disposed in every other strut covers 22 .
- Each segment of the intermediate duct 17 is supported by the bearing case 20 at the inner end thereof with attachment members 32 a and 32 b provided therebetween, and is supported by the intermediate casing wall 21 at the outer end thereof with supporting members 33 a and 33 b provided therebetween.
- the upstream retaining member 33 a in the direction of gas flow is indirectly supported by the intermediate casing 21 with a connecting member 34 disposed therebetween.
- each strut cover 22 has a wing-shaped cross section in which the width of a front section of the strut cover 22 gradually increases downstream in the direction of gas flow. Accordingly, the strut covers 22 allow the gas to smoothly flow along the surfaces thereof without generating a shock wave, thereby effectively providing a function as nozzle blades for the first-stage rotor blades 29 in the low-pressure turbine 13 .
- FIGS. 3A and 3B show the state in which the intermediate casing wall 21 is detached from the structure shown in FIGS. 2A and 2B , respectively.
- FIGS. 4A and 4B show the state in which the struts 23 are pulled out from the structure shown in FIGS. 3A and 3B , respectively.
- the procedure for assembling the two-shaft gas turbine or replacing the struts 23 and/or the segments of the intermediate duct 17 can be understood from FIGS. 4A and 4B .
- the strut covers 22 of the intermediate duct 17 serve the function as first-stage stator blades (nozzle blades) of the low-pressure turbine 13 . Therefore, unlike the known structure, it is not necessary to provide first-stage stator blades (nozzle blades) in the gas-passage inlet 16 of the low-pressure turbine 13 , and the rotor blades 29 can be directly arranged.
- the pressure loss in the gas passage between the high-pressure turbine 12 and the low-pressure turbine 13 and the length of the gas passage in the low-pressure turbine 13 can be reduced. Therefore, the turbine performance can be increased and the size can be reduced at the same time.
- the intermediate duct 17 is divided into a plurality of segments along the circumference thereof, each segment being integrated with a single strut cover 22 .
- the struts 23 may be provided so as to extend therethrough an arbitrary number of the strut covers 22 . Therefore, the number of struts 23 to be installed can be changed as necessary.
- the struts 23 and the segments of the intermediate duct 17 can be easily replaced.
- the present invention is not limited to the above-described embodiment.
- the number of segments into which the intermediate duct 17 is divided, the number of struts 23 to be installed, the cross sectional shape of each strut cover 22 , etc. may, of course, be variously modified within the scope of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A two-shaft gas turbine includes a high-pressure turbine having an annular gas-passage outlet, a low-pressure turbine having an annular gas-passage inlet, an annular intermediate duct that connects the gas-passage outlet to the gas-passage inlet, a bearing that supports a rotor of the high-pressure turbine and that is attached to a bearing case, and a plurality of struts that support the bearing case. The struts are arranged radially along the circumference of the bearing case so as to extend though the intermediate duct in a space between an outer peripheral surface of the bearing case and an inner peripheral surface of a casing wall that surrounds the intermediate duct. The intermediate duct has strut covers through which the struts extend and which function as first-stage stator blades for the low-pressure turbine.
Description
- 1. Field of the Invention
- The present invention relates to a gas turbine including a plurality of shafts arranged on the same axis.
- 2. Description of the Related Art
- A typical gas turbine (not shown) includes a compressor, a combustor, and a turbine. In the gas turbine, air is compressed by the compressor and is supplied to the combustor, where the compressed air is mixed with fuel that is separately supplied and the mixture of the compressed air and the fuel is combusted. Combustion gas is generated by combustion and is supplied to the turbine, where energy of the combustion gas is extracted. The energy exerts a rotational driving force for the compressor and a driving force for causing a generator (not shown) to generate electricity. After the rotational driving force is generated by the turbine, the combustion gas is exhausted through an exhaust diffuser.
-
FIG. 7 shows an example of a commonly known two-shaft gas turbine used as a jet-engine-derivative gas turbine. This gas turbine includes a high-pressure turbine 100 having an annular gas-passage outlet 101, a low-pressure turbine 102 having an annular gas-passage inlet 103, an annularintermediate duct 104 that connects the gas-passage outlet 101 to the gas-passage inlet 103, a journal bearing 105 that supports a rotor of the high-pressure turbine 100, and a plurality ofstruts 108 that support the journal bearing 105. Thestruts 108 are radially arranged along the circumference of the journal bearing 105 and extend though strut covers 107 that are integrated with theintermediate duct 104 in a space between an outer peripheral surface of the journal bearing 105 and an inner peripheral surface of acasing wall 106 that surrounds theintermediate duct 104. - The high-
pressure turbine 100 functions as a gas generator that generates high-temperature, high-pressure combustion gas for driving the compressor (not shown) and the low-pressure turbine 102 functions as a power turbine that drives a load (not shown) of a generator or the like to collect energy. InFIG. 7 ,reference numerals pressure turbine 102. - In the above-described two-shaft gas turbine, the strut covers 107 for preventing the
struts 108 from being heated by the high-temperature gas are disposed in the gas passage between the high-pressure turbine 100 and the low-pressure turbine 102. Therefore, the strut covers 107 and the first-stage stator blades 109, which are disposed along the gas flow for the first-stage rotor blades 110, cause aerodynamic loss in the gas passage. - In addition, since the strut covers 107 and the first-
stage stator blades 109 are arranged in tandem, namely, along the direction of gas flow, the length of the gas passage is increased. Therefore, the length of the low-pressure turbine 102 along the rotor shaft is also increased, which leads to an increase in the size of the gas turbine. - Accordingly, an object of the present invention is to provide a two-shaft gas turbine that is small and provides improved performance, wherein strut covers and first-stage stator blades are effectively integrated to reduce pressure loss in a gas passage and the length of the gas passage.
- In order to achieve the above-described object, a two-shaft gas turbine according to the present invention includes a high-pressure turbine having an annular gas-passage outlet, a low-pressure turbine having an annular gas-passage inlet, an annular intermediate duct that connects the gas-passage outlet to the gas-passage inlet, a bearing that supports a rotor of the high-pressure turbine and that is attached to a bearing case, and a plurality of struts that support the bearing case. The struts are arranged radially along the circumference of the bearing case extend though the intermediate duct in a space between an outer peripheral surface of the bearing case and an inner peripheral surface of a casing wall that surrounds the intermediate duct. The intermediate duct has strut covers through which the struts extend and which function as first-stage stator blades of the low-pressure turbine.
- The intermediate duct may be divided into a plurality of segments along the circumference thereof, each segment having one of the strut covers, and the struts may be provided so as to extend through an arbitrary number of the strut covers.
- The intermediate duct may be divided into twenty segments and the struts may be provided so as to extend through ten of the strut covers, the strut covers without the struts and the strut covers having the struts being arranged alternately.
- Each strut cover has a wing-shaped cross section in which the width of a front section of the strut cover gradually increases downstream in the direction of gas flow.
-
FIG. 1 is a sectional view of the main portion of a two-shaft gas turbine according to an embodiment of the present invention; -
FIG. 2A is a sectional view of an intermediate duct; -
FIG. 2B is a perspective sectional view of the intermediate duct; -
FIG. 3A is an exploded sectional view of the intermediate duct; -
FIG. 3B is an exploded perspective sectional view of the intermediate duct; -
FIG. 4A is an exploded sectional view of the intermediate duct in another state; -
FIG. 4B is an exploded perspective sectional view of the intermediate duct in another state; -
FIG. 5 is a schematic diagram showing the overall structure of the two-shaft gas turbine; -
FIG. 6 is a sectional view ofFIG. 1 taken along line VI-VI; and -
FIG. 7 is a sectional view of the main part of a known two-shaft gas turbine. - A two-shaft gas turbine according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
- As shown in
FIG. 5 , a two-shaft gas turbine according to the present embodiment includes acompressor 10, acombustor 11, a high-pressure turbine 12 that functions as a gas generator, and a low-pressure turbine 13 that functions as a power turbine. - In this two-shaft gas turbine, air is compressed by the
compressor 10 and is supplied to thecombustor 11, where the compressed air is mixed with fuel that is separately supplied and the mixture of the compressed air and the fuel is combusted. Combustion gas is generated by combustion is supplied to the high-pressure turbine 12 and the low-pressure turbine 13. The high-pressure turbine 12 generates high-temperature, high-pressure combustion gas for driving thecompressor 10 at, for example, 5,000 rpm and the low-pressure turbine 13 drives agenerator 14 at, for example, 3,000 rpm to collect the energy of the combustion gas. - As shown in
FIGS. 1 , 2A, and 2B, the high-pressure turbine 12 and the low-pressure turbine. 13 have an annular gas-passage outlet 15 and an annular gas-passage inlet 16, respectively, which are connected to each other with an annularintermediate duct 17. Abearing 19 that supports arotor 18 of the high-pressure turbine 12 is attached to abearing case 20 that is supported by a plurality ofstruts 23. Thestruts 23 are arranged radially along the circumference of thebearing case 20 and extend through strut covers 22 that are integrated with theintermediate duct 17 in a space between an outer peripheral surface of thebearing case 20 and an inner peripheral surface of anintermediate casing wall 21 that surrounds theintermediate duct 17. - The high-
pressure turbine 12 has a gas passage in whichstator blades 25 are supported by aninner casing wall 24A so as to be arranged in two stages androtor blades 26 are supported by therotor 18 at a position between the two stages ofstator blades 25. Anouter casing wall 24B of the high-pressure turbine 12 is fixed to theintermediate casing wall 21 with bolts. The low-pressure turbine 13 has a gas passage in whichstator blades 28 supported by aninner casing wall 27A androtor blades 29 supported by a rotor (not shown) are alternately arranged in multiple stages. Anouter casing wall 27B of the low-pressure turbine 13 is also fixed theintermediate casing wall 21 with bolts. - The
struts 23 are fixed to thebearing case 20 and theintermediate casing wall 21 at the ends thereof withstud bolts 30,nuts 31, and locking bolts (not shown). - According to the present embodiment, the strut covers 22 of the
intermediate duct 17 through which thestruts 23 extend function as first-stage stator blades in the low-pressure turbine 13. Therefore, although first-stage stator blades are disposed in a gas-passage inlet of a low-pressure turbine in a known structure, the first-stage rotor blades 29 are directly provided instead in the present embodiment. - More specifically, the
intermediate duct 17 is divided into, for example, twenty segments along the circumference thereof, each segment being integrated with asingle strut cover 22. Among the strut covers 22, thestruts 23 are provided so as to extend through, for example, ten strut covers 22. In other words, thestruts 23 are disposed in every other strut covers 22. - Each segment of the
intermediate duct 17 is supported by the bearingcase 20 at the inner end thereof withattachment members intermediate casing wall 21 at the outer end thereof with supportingmembers FIG. 1 , theupstream retaining member 33 a in the direction of gas flow is indirectly supported by theintermediate casing 21 with a connectingmember 34 disposed therebetween. - As shown in
FIG. 6 , eachstrut cover 22 has a wing-shaped cross section in which the width of a front section of thestrut cover 22 gradually increases downstream in the direction of gas flow. Accordingly, the strut covers 22 allow the gas to smoothly flow along the surfaces thereof without generating a shock wave, thereby effectively providing a function as nozzle blades for the first-stage rotor blades 29 in the low-pressure turbine 13. -
FIGS. 3A and 3B show the state in which theintermediate casing wall 21 is detached from the structure shown inFIGS. 2A and 2B , respectively.FIGS. 4A and 4B show the state in which thestruts 23 are pulled out from the structure shown inFIGS. 3A and 3B , respectively. The procedure for assembling the two-shaft gas turbine or replacing thestruts 23 and/or the segments of theintermediate duct 17 can be understood fromFIGS. 4A and 4B . - As described above, according to the present embodiment, the strut covers 22 of the
intermediate duct 17 serve the function as first-stage stator blades (nozzle blades) of the low-pressure turbine 13. Therefore, unlike the known structure, it is not necessary to provide first-stage stator blades (nozzle blades) in the gas-passage inlet 16 of the low-pressure turbine 13, and therotor blades 29 can be directly arranged. - Therefore, the pressure loss in the gas passage between the high-
pressure turbine 12 and the low-pressure turbine 13 and the length of the gas passage in the low-pressure turbine 13 can be reduced. Therefore, the turbine performance can be increased and the size can be reduced at the same time. - In addition, according to the present embodiment, the
intermediate duct 17 is divided into a plurality of segments along the circumference thereof, each segment being integrated with asingle strut cover 22. In addition, thestruts 23 may be provided so as to extend therethrough an arbitrary number of the strut covers 22. Therefore, the number ofstruts 23 to be installed can be changed as necessary. In addition, thestruts 23 and the segments of theintermediate duct 17 can be easily replaced. - The present invention is not limited to the above-described embodiment. The number of segments into which the
intermediate duct 17 is divided, the number ofstruts 23 to be installed, the cross sectional shape of eachstrut cover 22, etc. may, of course, be variously modified within the scope of the present invention.
Claims (4)
1. A two-shaft gas turbine comprising:
a high-pressure turbine having an annular gas-passage outlet;
a low-pressure turbine having an annular gas-passage inlet;
an annular intermediate duct that connects the gas-passage outlet to the gas-passage inlet;
a bearing that supports a rotor of the high-pressure turbine and that is attached to a bearing case; and
a plurality of struts that support the bearing case, the struts being arranged radially along the circumference of the bearing case and extending though the intermediate duct in a space between an outer peripheral surface of the bearing case and an inner peripheral surface of a casing wall that surrounds the intermediate duct, wherein
the intermediate duct is divided into a plurality of segments along the circumference thereof, each of the segments integrated with a single strut cover and provided detachably from one another, the struts extend through an arbitrary number of the strut covers, and
the intermediate duct has strut covers through which the struts extend and which function as first-stage stator blades of the low-pressure turbine.
2. (canceled)
3. The two-shaft gas turbine according to, claim 1 wherein the intermediate duct is divided into twenty segments and the struts are provided so as to extend through ten of the strut covers, the strut covers without the struts and the strut covers having the struts being arranged alternately.
4. The two-shaft gas turbine according to claim 1 , wherein each strut cover has a wing-shaped cross section in which the width of a front section of the strut cover gradually increases downstream in the direction of gas flow.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/528,690 US20100303608A1 (en) | 2006-09-28 | 2006-09-28 | Two-shaft gas turbine |
JP2007128757A JP2008082323A (en) | 2006-09-28 | 2007-05-15 | Two-shaft gas turbine |
DE102007025006A DE102007025006A1 (en) | 2006-09-28 | 2007-05-30 | Double shaft gas turbine, has bars arranged along circumference of bearing housing and extend via circular intermediate channel into space between outer circumference surface of housing and inner circumference surface of housing wall |
CN2007101088359A CN101153546B (en) | 2006-09-28 | 2007-05-31 | Doppelwellen-gasturbine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/528,690 US20100303608A1 (en) | 2006-09-28 | 2006-09-28 | Two-shaft gas turbine |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100303608A1 true US20100303608A1 (en) | 2010-12-02 |
Family
ID=39154786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/528,690 Abandoned US20100303608A1 (en) | 2006-09-28 | 2006-09-28 | Two-shaft gas turbine |
Country Status (4)
Country | Link |
---|---|
US (1) | US20100303608A1 (en) |
JP (1) | JP2008082323A (en) |
CN (1) | CN101153546B (en) |
DE (1) | DE102007025006A1 (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014105688A1 (en) | 2012-12-31 | 2014-07-03 | United Technologies Corporation | Turbine exhaust case multi-piece frame |
US20140205447A1 (en) * | 2013-01-22 | 2014-07-24 | Harry Patat | Purge and cooling air for an exhaust section of a gas turbine assembly |
US20150308343A1 (en) * | 2012-12-29 | 2015-10-29 | United Technologies Corporation | Installation mounts for a turbine exhaust case |
US20150337683A1 (en) * | 2012-12-29 | 2015-11-26 | United Technologies Corporation | Angled cut to direct radiative heat load |
WO2016010554A1 (en) * | 2014-07-18 | 2016-01-21 | Siemens Energy, Inc. | Turbine assembly with detachable struts |
US9279341B2 (en) | 2011-09-22 | 2016-03-08 | Pratt & Whitney Canada Corp. | Air system architecture for a mid-turbine frame module |
US20160177788A1 (en) * | 2014-12-17 | 2016-06-23 | United Technologies Corporation | Intergrated seal supports |
EP2574737A3 (en) * | 2011-09-28 | 2016-10-19 | United Technologies Corporation | Gas turbine engine tie rod retainer |
US9631517B2 (en) | 2012-12-29 | 2017-04-25 | United Technologies Corporation | Multi-piece fairing for monolithic turbine exhaust case |
US9771828B2 (en) | 2015-04-01 | 2017-09-26 | General Electric Company | Turbine exhaust frame and method of vane assembly |
US9784133B2 (en) | 2015-04-01 | 2017-10-10 | General Electric Company | Turbine frame and airfoil for turbine frame |
FR3055655A1 (en) * | 2016-09-06 | 2018-03-09 | Safran Aircraft Engines | INTERMEDIATE CASE OF TURBOMACHINE TURBINE |
US9982548B2 (en) | 2013-07-15 | 2018-05-29 | United Technologies Corporation | Turbine vanes with variable fillets |
US20180355763A1 (en) * | 2017-06-12 | 2018-12-13 | General Electric Company | Turbine center frame |
US10273812B2 (en) | 2015-12-18 | 2019-04-30 | Pratt & Whitney Canada Corp. | Turbine rotor coolant supply system |
US11708771B2 (en) | 2021-04-02 | 2023-07-25 | Mitsubishi Heavy Industries, Ltd. | Gas turbine with reduced axial displacement under thermal expansion |
US11982198B2 (en) | 2019-06-12 | 2024-05-14 | Safran Helicopter Engines | Annular component for supporting a turbine engine bearing |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100132371A1 (en) * | 2008-11-28 | 2010-06-03 | Pratt & Whitney Canada Corp. | Mid turbine frame system for gas turbine engine |
US8347500B2 (en) * | 2008-11-28 | 2013-01-08 | Pratt & Whitney Canada Corp. | Method of assembly and disassembly of a gas turbine mid turbine frame |
US8061969B2 (en) | 2008-11-28 | 2011-11-22 | Pratt & Whitney Canada Corp. | Mid turbine frame system for gas turbine engine |
DE102008062588B4 (en) * | 2008-12-16 | 2010-11-25 | Siemens Aktiengesellschaft | Method for stabilizing the mains frequency of an electrical power network |
JP2011001950A (en) | 2009-05-19 | 2011-01-06 | Hitachi Ltd | Two-shaft gas turbine |
CN101963073B (en) * | 2009-07-22 | 2012-05-23 | 中国科学院工程热物理研究所 | Counterrotating turbine with overhung rotor blade structure |
EP2802745A4 (en) * | 2012-01-09 | 2015-10-21 | United Technologies Corp | Gas turbine engine with geared architecture |
FR2986040B1 (en) * | 2012-01-20 | 2016-03-25 | Turbomeca | TURBOMACHINE BEARING SUPPORT |
WO2014105572A1 (en) * | 2012-12-29 | 2014-07-03 | United Technologies Corporation | Combination flow divider and bearing support |
JP6232446B2 (en) * | 2012-12-31 | 2017-11-15 | ユナイテッド テクノロジーズ コーポレイションUnited Technologies Corporation | Multi-piece frame for turbine exhaust case |
US11193385B2 (en) * | 2016-04-18 | 2021-12-07 | General Electric Company | Gas bearing seal |
US10550726B2 (en) * | 2017-01-30 | 2020-02-04 | General Electric Company | Turbine spider frame with additive core |
DE102017221684A1 (en) | 2017-12-01 | 2019-06-06 | MTU Aero Engines AG | Turbomachinery flow channel |
JP2021127755A (en) * | 2020-02-17 | 2021-09-02 | 三菱重工業株式会社 | Two-shaft gas turbine |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3250512A (en) * | 1962-11-09 | 1966-05-10 | Rolls Royce | Gas turbine engine |
US3736069A (en) * | 1968-10-28 | 1973-05-29 | Gen Motors Corp | Turbine stator cooling control |
US4013377A (en) * | 1975-10-08 | 1977-03-22 | Westinghouse Electric Corporation | Intermediate transition annulus for a two shaft gas turbine engine |
US4197702A (en) * | 1977-05-26 | 1980-04-15 | Rolls-Royce Limited | Rotor support structure for a gas turbine engine |
US4989406A (en) * | 1988-12-29 | 1991-02-05 | General Electric Company | Turbine engine assembly with aft mounted outlet guide vanes |
US6439841B1 (en) * | 2000-04-29 | 2002-08-27 | General Electric Company | Turbine frame assembly |
US20030077166A1 (en) * | 2001-04-06 | 2003-04-24 | Czachor Robert Paul | Low hoop stress turbine frame support |
US20050132715A1 (en) * | 2003-12-22 | 2005-06-23 | Allen Clifford E.Jr. | Methods and apparatus for assembling gas turbine engines |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB926947A (en) * | 1961-11-27 | 1963-05-22 | Rolls Royce | Improvements relating to gas turbine engine casings |
US4304522A (en) * | 1980-01-15 | 1981-12-08 | Pratt & Whitney Aircraft Of Canada Limited | Turbine bearing support |
US4478551A (en) * | 1981-12-08 | 1984-10-23 | United Technologies Corporation | Turbine exhaust case design |
US4793770A (en) * | 1987-08-06 | 1988-12-27 | General Electric Company | Gas turbine engine frame assembly |
US4965994A (en) * | 1988-12-16 | 1990-10-30 | General Electric Company | Jet engine turbine support |
US4979872A (en) * | 1989-06-22 | 1990-12-25 | United Technologies Corporation | Bearing compartment support |
US5160251A (en) * | 1991-05-13 | 1992-11-03 | General Electric Company | Lightweight engine turbine bearing support assembly for withstanding radial and axial loads |
GB2267736B (en) * | 1992-06-09 | 1995-08-09 | Gen Electric | Segmented turbine flowpath assembly |
CN1167207A (en) * | 1997-02-03 | 1997-12-10 | 周展开 | Inverse setting (spindle setting) combustion chamber type double-axle gas-turbine |
US20040109756A1 (en) * | 2002-12-09 | 2004-06-10 | Mitsubishi Heavy Industries Ltd. | Gas turbine |
US7063505B2 (en) * | 2003-02-07 | 2006-06-20 | General Electric Company | Gas turbine engine frame having struts connected to rings with morse pins |
US7278821B1 (en) * | 2004-11-04 | 2007-10-09 | General Electric Company | Methods and apparatus for assembling gas turbine engines |
-
2006
- 2006-09-28 US US11/528,690 patent/US20100303608A1/en not_active Abandoned
-
2007
- 2007-05-15 JP JP2007128757A patent/JP2008082323A/en active Pending
- 2007-05-30 DE DE102007025006A patent/DE102007025006A1/en not_active Ceased
- 2007-05-31 CN CN2007101088359A patent/CN101153546B/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3250512A (en) * | 1962-11-09 | 1966-05-10 | Rolls Royce | Gas turbine engine |
US3736069A (en) * | 1968-10-28 | 1973-05-29 | Gen Motors Corp | Turbine stator cooling control |
US4013377A (en) * | 1975-10-08 | 1977-03-22 | Westinghouse Electric Corporation | Intermediate transition annulus for a two shaft gas turbine engine |
US4197702A (en) * | 1977-05-26 | 1980-04-15 | Rolls-Royce Limited | Rotor support structure for a gas turbine engine |
US4989406A (en) * | 1988-12-29 | 1991-02-05 | General Electric Company | Turbine engine assembly with aft mounted outlet guide vanes |
US6439841B1 (en) * | 2000-04-29 | 2002-08-27 | General Electric Company | Turbine frame assembly |
US20030077166A1 (en) * | 2001-04-06 | 2003-04-24 | Czachor Robert Paul | Low hoop stress turbine frame support |
US20050132715A1 (en) * | 2003-12-22 | 2005-06-23 | Allen Clifford E.Jr. | Methods and apparatus for assembling gas turbine engines |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9279341B2 (en) | 2011-09-22 | 2016-03-08 | Pratt & Whitney Canada Corp. | Air system architecture for a mid-turbine frame module |
EP2574737A3 (en) * | 2011-09-28 | 2016-10-19 | United Technologies Corporation | Gas turbine engine tie rod retainer |
US10240481B2 (en) * | 2012-12-29 | 2019-03-26 | United Technologies Corporation | Angled cut to direct radiative heat load |
US20150308343A1 (en) * | 2012-12-29 | 2015-10-29 | United Technologies Corporation | Installation mounts for a turbine exhaust case |
US20150337683A1 (en) * | 2012-12-29 | 2015-11-26 | United Technologies Corporation | Angled cut to direct radiative heat load |
US10036324B2 (en) * | 2012-12-29 | 2018-07-31 | United Technologies Corporation | Installation mounts for a turbine exhaust case |
US9631517B2 (en) | 2012-12-29 | 2017-04-25 | United Technologies Corporation | Multi-piece fairing for monolithic turbine exhaust case |
EP2938860A4 (en) * | 2012-12-31 | 2016-03-23 | United Technologies Corp | Turbine exhaust case multi-piece frame |
US9890663B2 (en) | 2012-12-31 | 2018-02-13 | United Technologies Corporation | Turbine exhaust case multi-piece frame |
WO2014105688A1 (en) | 2012-12-31 | 2014-07-03 | United Technologies Corporation | Turbine exhaust case multi-piece frame |
US9316153B2 (en) * | 2013-01-22 | 2016-04-19 | Siemens Energy, Inc. | Purge and cooling air for an exhaust section of a gas turbine assembly |
US20140205447A1 (en) * | 2013-01-22 | 2014-07-24 | Harry Patat | Purge and cooling air for an exhaust section of a gas turbine assembly |
US9982548B2 (en) | 2013-07-15 | 2018-05-29 | United Technologies Corporation | Turbine vanes with variable fillets |
US9822669B2 (en) | 2014-07-18 | 2017-11-21 | Siemens Energy, Inc. | Turbine assembly with detachable struts |
WO2016010554A1 (en) * | 2014-07-18 | 2016-01-21 | Siemens Energy, Inc. | Turbine assembly with detachable struts |
US20160177788A1 (en) * | 2014-12-17 | 2016-06-23 | United Technologies Corporation | Intergrated seal supports |
US10100676B2 (en) * | 2014-12-17 | 2018-10-16 | United Technologies Corporation | Intergrated seal supports |
US9784133B2 (en) | 2015-04-01 | 2017-10-10 | General Electric Company | Turbine frame and airfoil for turbine frame |
US9771828B2 (en) | 2015-04-01 | 2017-09-26 | General Electric Company | Turbine exhaust frame and method of vane assembly |
US10907490B2 (en) | 2015-12-18 | 2021-02-02 | Pratt & Whitney Canada Corp. | Turbine rotor coolant supply system |
US10273812B2 (en) | 2015-12-18 | 2019-04-30 | Pratt & Whitney Canada Corp. | Turbine rotor coolant supply system |
EP3299590A1 (en) * | 2016-09-06 | 2018-03-28 | Safran Aircraft Engines | Intermediate casing of a turbomachine turbine |
FR3055655A1 (en) * | 2016-09-06 | 2018-03-09 | Safran Aircraft Engines | INTERMEDIATE CASE OF TURBOMACHINE TURBINE |
US20180355763A1 (en) * | 2017-06-12 | 2018-12-13 | General Electric Company | Turbine center frame |
US11401835B2 (en) | 2017-06-12 | 2022-08-02 | General Electric Company | Turbine center frame |
US11982198B2 (en) | 2019-06-12 | 2024-05-14 | Safran Helicopter Engines | Annular component for supporting a turbine engine bearing |
US11708771B2 (en) | 2021-04-02 | 2023-07-25 | Mitsubishi Heavy Industries, Ltd. | Gas turbine with reduced axial displacement under thermal expansion |
Also Published As
Publication number | Publication date |
---|---|
DE102007025006A1 (en) | 2008-04-10 |
CN101153546B (en) | 2010-06-16 |
JP2008082323A (en) | 2008-04-10 |
CN101153546A (en) | 2008-04-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20100303608A1 (en) | Two-shaft gas turbine | |
US8998577B2 (en) | Turbine last stage flow path | |
JP4975945B2 (en) | Counter-rotatable booster compressor assembly for gas turbine engines | |
US8157514B2 (en) | Components for gas turbine engines | |
US8438854B2 (en) | Pre-diffuser for centrifugal compressor | |
US20070113557A1 (en) | System for coupling flow from a centrifugal compressor to an axial combustor for gas turbines | |
US20120272663A1 (en) | Centrifugal compressor assembly with stator vane row | |
CN108005786B (en) | Rotor shaft structure for gas turbine engine and method of assembling the same | |
JP7237444B2 (en) | exhaust diffuser | |
US9297312B2 (en) | Circumferentially retained fairing | |
US11060530B2 (en) | Compressor cooling in a gas turbine engine | |
JP2017110642A (en) | Compliant shroud for gas turbine engine clearance control | |
US9528392B2 (en) | System for supporting a turbine nozzle | |
CN106545364B (en) | Mixing chamber for turbine wheel space cooling | |
EP2514928B1 (en) | Compressor inlet casing with integral bearing housing | |
CN112392549A (en) | Blade retention feature for a turbomachine | |
JP7171297B2 (en) | turbine exhaust diffuser | |
EP3249182B1 (en) | Radial exhaust diffuser | |
US20210062680A1 (en) | Gas turbine engine of an aircraft | |
WO2011145326A1 (en) | Turbine of gas turbine engine | |
JP2014013037A (en) | Turbine exhaust diffuser | |
GB2415017A (en) | Heat shield for attachment to a casing of a gas turbine engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MITSUBISHI HEAVY INDUSTRIES, LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KATAOKA, MASAHITO;ITO, EISAKU;LAURELLO, VINCENT;REEL/FRAME:018578/0319 Effective date: 20061024 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |