EP3078914A1 - Annular combustor for a gas turbine engine - Google Patents
Annular combustor for a gas turbine engine Download PDFInfo
- Publication number
- EP3078914A1 EP3078914A1 EP15162999.5A EP15162999A EP3078914A1 EP 3078914 A1 EP3078914 A1 EP 3078914A1 EP 15162999 A EP15162999 A EP 15162999A EP 3078914 A1 EP3078914 A1 EP 3078914A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- annular
- gas turbine
- combustor
- connection element
- turbine engine
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/005—Combined with pressure or heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
- F23R3/60—Support structures; Attaching or mounting means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/00012—Details of sealing devices
Definitions
- the present invention relates to an annular combustor for a gas turbine engine and to a gas turbine engine including such a combustor.
- Annular combustors are well known in the field of gas turbine engines.
- An annular combustor is normally included in a gas turbine engine 1 comprising, arranged in flow series: a compressor section, a burner, the annular combustor and a gas turbine section.
- air is compressed by the compressor section and delivered to the combustion section, including the burner and the annular combustor.
- the compressed air exiting from the compressor enters the burner, where is mixed with a gaseous or liquid fuel.
- the air/fuel mixture is then burned and the combustion gas from the combustion is channelled through the combustor to the gas turbine section, for transforming the energy from the operative gas into working power.
- the annular combustor for the above described application normally extends axially between a first axial burner end, close to the burner and a second axial outlet end, adjacent to the inlet of the gas turbine section. Further the annular combustor radially extends between an annular inner liner and an annular outer liner. At first axial burner end, the annular combustor comprises an annular backwall for connecting the annular inner liner and the annular outer liner. The backwall comprises at least a hole for coupling at least a respective burner to the annular combustor.
- the annular combustor described above is normally manufactured in one piece including at least the annular inner liner, the annular outer liner and the backwall. Such unitary piece is then attached to the gas turbine engine by means of one or more connections provided between the combustor and a casing of the gas turbine engine. Such a connection is typically remote from the interface between the outlet of the combustor and the inlet of the gas turbine, therefore a gap is necessary between the combustor and the gas turbine for allowing thermal expansions.
- annular combustor for a gas turbine is provided in accordance with the independent claim.
- the dependent claims describe advantageous developments and modifications of the invention.
- annular combustor for a gas turbine engine, the annular combustor axially extending between a first axial burner end and a second axial outlet end, the annular combustor radially extending between an annular inner liner and an annular outer liner, the annular combustor being at least an assembly of:
- the segmentation of the annular combustor allows reducing at the minimum or eliminating the gap between the outlet of the combustor and the inlet of the gas turbine. As a result, hot gas ingestion is eliminated or effectively reduced, thus producing a much more robust design, which would be also easier and therefore cheaper to repair.
- the first or the second part further includes a backwall for connecting the annular inner liner and the annular outer liner at the first axial burner end, the backwall comprising at least an hole for coupling a burner to the annular combustor.
- the annular combustor is an assembly of the first part, the second part, and at least a third part including:
- the annular combustor of the present invention is made part of two parts, one including the backwall, or is made of three parts, respectively including inner liner, outer liner and backwall.
- these variants give the possibility to adapt the combustor design of the present invention to the design of different gas turbine engines, for example gas turbine engines having different overall dimensions.
- a sealing is provided between the backwall and at least one of the inner liner and the annular outer liner.
- the sealing may comprise at least a finger seal.
- the sealing avoids leakages through the contacts between first, second and third part of the annular combustor at the backwall, i.e. where the first, second and third part contact each other.
- the annular inner liner and/or the annular outer liner comprise a plurality of effusion holes for letting compressed air to enter the combustor through the annular inner liner and /or the outer liner, in order to cool the annular inner liner and /or the outer liner, respectively.
- the annular inner liner and/or the annular outer liner comprises at least a cooling passage inside the liner.
- the cooling passage may be provided between two panels of the annular inner liner and/or of the annular outer liner, bonded together.
- the effusion holes or the cooling passages provide the necessary cooling to the walls of the inner and outer liners.
- a gas turbine engine comprises a burner, a gas turbine and an annular combustor as above described, between the burner and the gas turbine.
- a gas turbine comprises an inlet section and at least one connection element adjacent to the inlet section for coupling with an annular combustor as above described.
- Figure 1 shows an example of a gas turbine engine 1 in a partial schematic sectional view.
- the gas turbine engine 1 (not shown as a whole) comprises, in flow series, a compressor section 4 (not shown as a whole), a plurality of burners 2 (only one burner 2 shown in each of the section figures 1 to 4 ) an annular combustor 10 and a gas turbine 3, which are generally arranged in flow series within a casing 5.
- the gas turbine engine 1 is generally arranged about a rotational axis X, which is the rotational axis for rotating components, in particular the compressor section 4 and the gas turbine 3.
- the rotational axis X is also coincident with the axis of symmetry of the annular combustor 10, when the annular combustor 10 is assembled to the gas turbine engine 1.
- air is compressed by the compressor section 4 and delivered to the combustion section, including the burner 2 and the annular combustor 10.
- the compressed air exiting from the compressor 4 and flowing towards the combustion section is schematically represented in the attached figures by arrows A.
- the compressed air enters the burner 2 where is mixed with a gaseous or liquid fuel.
- the air/fuel mixture is then burned and the combustion gas from the combustion is channelled through the combustion chamber 10 to the gas turbine section 1, for transforming the energy from the operative gas into working power.
- the combustion gas flows along the combustion chamber 10 along a main direction oriented from the burner 2 to the gas turbine 3.
- the combustion section 4 and the burner 2 are not a specific object of the present invention and, therefore, in the following, they will not be described in further detail.
- the annular combustor 10 extends axially between a first axial burner end 11 and a second axial outlet end 12 and radially between an annular inner liner 15 and an annular outer liner 16.
- the annular combustor 10 further includes:
- connection element 31 and of the second connection element 32 is adjacent to the outlet end 12 of the combustor 10 and is connectable to a respective gas turbine connection element 17, 18 on the gas turbine 3, respectively radially inner and outer.
- the connection elements 17, 18 are adjacent to the inlet section 13 of the gas turbine 3.
- the annular combustor 10 further comprises a third part 23, distinct from first part 21 and from the second part 22.
- the third part 23 includes the backwall 25 and a third connection element 33 for connecting the third part 22 to the casing 5 of the gas turbine engine 1.
- annular combustor 10 is an assembly of:
- first, second and third part 21, 22, 23 and the gas turbine 3 and the casing 5, respectively is circumferentially distributed about the axis X. According to the different embodiments of the present invention, this may be obtained with circumferential elongated connection elements 31, 32, 33, 17, 18, 35.
- each of the first part 21, second part 22 and third part 23 comprises a respective plurality of connection elements 31, 32, 33 to be coupled to a respective plurality of connection elements 17, 18 on the gas turbine 3 and of connection elements 35 on the casing 5.
- the third part 23 is not present and the backwall 25 is comprised in the first part 21 and in the second part 22, respectively.
- the annular combustor 10 of figure 2 is therefore an assembly of:
- first and the second part 21, 22 and the casing and 5 the gas turbine 3, respectively is circumferentially distributed about the axis X. According to the different embodiments of the present invention, this may be obtained with circumferential elongated connection elements 31, 32, 18, 35.
- each of the first part 21 and second part 22 comprises a respective plurality of connection elements 31, 32 to be coupled to a respective plurality of casing connection elements 35 and of outer connection elements 18 on the gas turbine 3.
- the annular combustor 10 of figure 3 is instead an assembly of:
- first and the second part 21, 22 and the gas turbine 3 and the casing 5, respectively is circumferentially distributed about the axis X. According to the different embodiments of the present invention, this may be obtained with circumferential elongated connection elements 31, 32, 17, 35.
- each of the first part 21 and second part 22 comprises a respective plurality of connection elements 31, 32 to be coupled to a respective plurality of inner connection elements 17 on the gas turbine 3 and of casing connection elements 35.
- the couplings between the first, second and third part 21, 22, 23 and the gas turbine 3 and/or the casing 5 are detachable and may performed by means of screw (or other threaded connection) and/or bolts. This allows connecting and disconnecting each part 21, 22, 23 of the annular combustor 10 independently from the others.
- the mounting of the first, second and third part 21, 22, 23 in the gas turbine engine is made in such a way that the outlet end 12 of the annular combustor 10 is mounted adjacent to the inlet section 13 of the gas turbine 3. This avoids or limits hot gas leakages when hot gases from the annular combustor 10 enter the gas turbine 3.
- the first, second and third part 21, 22, 23 contact each other along the edges of the backwall 25.
- a sealing 40 is provided between the backwall 25 and at least one of the inner liner 15 and the annular outer liner 16.
- the sealing 40 comprises an inner finger seal 41 between the backwall 25 and the inner liner 15 and/or an outer finger seal 42 between the backwall 25 and the outer liner 16.
- both the inner and outer finger seals 41, 42 are present.
- other sealing devices may be used between the parts 21, 22, 23 of the annular combustor 10, in order to avoid hot gas leakages between the backwall 25 and the inner liner 15 and/or between the backwall 25 and the outer liner 16.
- the annular inner liner 15 and the annular outer liner 16 comprise a plurality of effusion holes 50 for letting compressed air (represented by arrows A) to enter the combustor 1) through the walls of the annular inner liner 15 and the outer liner 16, in order to cool the annular liners 15 and 16, respectively.
- the embodiment of figure 4 is similar to the embodiment of figure 1 , i.e it comprises the first, second and third parts 21, 22, 23 of the annular combustor independently attached to the gas turbine 3 and to the casing 5.
- the embodiment of figure 4 is different from the embodiment of figure 1 for the fact that the annular inner liner 15 and the annular outer liner 16 comprises one or more cooling passages 60 inside the respective liner 15, 16, for providing cooling by letting a flow of compressed air A enter the annular combustor 10 through the cooling passages 60.
- Each cooling passage 60 is obtained inside the walls of the annular inner liner 15 and the annular outer liner 16 by means of at least two panels 61, 62, respectively internal (i.e.
- Each cooling passage 60 comprises an inlet 63, through which compressed air A enters the passage 60, and an outlet 64, through which compressed air A exits the passage 60 to enter the annular combustor 10.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
An annular combustor (10) for a gas turbine engine (1), axially extending between a first axial burner end (11) and a second axial outlet end (12) and radially extending between an annular inner liner (15) and an annular outer liner (16), wherein the annular combustor (10) is at least an assembly of:
- a first part (21) including the annular inner liner (15) and a first connection element (31) for connecting the first part (21) to the gas turbine engine (1),
- a second part (22) including the annular outer liner (16) and a second connection element (32) for connecting the second part (22) to the gas turbine engine (1),
- at least one of the first connection element (31) and of the second connection element (32) being adjacent to the outlet end (12) of the combustor (10).
- a first part (21) including the annular inner liner (15) and a first connection element (31) for connecting the first part (21) to the gas turbine engine (1),
- a second part (22) including the annular outer liner (16) and a second connection element (32) for connecting the second part (22) to the gas turbine engine (1),
- at least one of the first connection element (31) and of the second connection element (32) being adjacent to the outlet end (12) of the combustor (10).
Description
- The present invention relates to an annular combustor for a gas turbine engine and to a gas turbine engine including such a combustor.
- Annular combustors are well known in the field of gas turbine engines.
- An annular combustor is normally included in a
gas turbine engine 1 comprising, arranged in flow series: a compressor section, a burner, the annular combustor and a gas turbine section. In operation of the gas turbine engine, air is compressed by the compressor section and delivered to the combustion section, including the burner and the annular combustor. The compressed air exiting from the compressor enters the burner, where is mixed with a gaseous or liquid fuel. The air/fuel mixture is then burned and the combustion gas from the combustion is channelled through the combustor to the gas turbine section, for transforming the energy from the operative gas into working power. - The annular combustor for the above described application normally extends axially between a first axial burner end, close to the burner and a second axial outlet end, adjacent to the inlet of the gas turbine section. Further the annular combustor radially extends between an annular inner liner and an annular outer liner. At first axial burner end, the annular combustor comprises an annular backwall for connecting the annular inner liner and the annular outer liner. The backwall comprises at least a hole for coupling at least a respective burner to the annular combustor.
- According to a known possible prior art solution, the annular combustor described above is normally manufactured in one piece including at least the annular inner liner, the annular outer liner and the backwall. Such unitary piece is then attached to the gas turbine engine by means of one or more connections provided between the combustor and a casing of the gas turbine engine. Such a connection is typically remote from the interface between the outlet of the combustor and the inlet of the gas turbine, therefore a gap is necessary between the combustor and the gas turbine for allowing thermal expansions.
- Such an annular combustor and attachment determines a plurality of inconveniences:
- the gap in the interface between the combustor and the inlet of the turbine section cannot be reduced below a lower limit. This leads to damages to the components, due to hot gas ingestion, i.e. the hot gas exiting the second axial outlet end of the combustor and leaking through the gap between combustor and gas turbine section;
- when a reparation is required, repairing an annular combustor like the one described above, i.e. a combustor manufactured in a unitary piece attached to the casing of the gas turbine engine, is expensive.
- Prior art solutions to above inconveniences may be, respectively:
- purging air has in the cavity between the combustor and the gas turbine section;
- cutting the combustor into several pieces, that, after reparation, have nevertheless to be welded back together.
- The above solutions are not yet considered optimal and therefore it is still desirable to provide a new annular combustor design for efficiently overcoming the above described drawbacks.
- It may be an object of the present invention to provide an annular combustor for a gas turbine engine permitting to reduce at the minimum or eliminating the gap between the combustor and the inlet of the turbine section, in such a way that the phenomenon of hot gas ingestion is avoided or limited to a minimum.
- It may be a further object of the present invention to provide an annular combustor for a gas turbine engine, whose maintenance is easier and less expensive, with respect to the prior art.
- It may be an additional object of the present invention to provide a gas turbine engine including an annular combustor having a reduced gap between the combustor and the inlet of the turbine section and whose maintenance is easier and less expensive, with respect to the prior art.
- In order to achieve the objects defined above, an annular combustor for a gas turbine is provided in accordance with the independent claim. The dependent claims describe advantageous developments and modifications of the invention.
- According to a first aspect of the present invention, an annular combustor for a gas turbine engine, the annular combustor axially extending between a first axial burner end and a second axial outlet end, the annular combustor radially extending between an annular inner liner and an annular outer liner, the annular combustor being at least an assembly of:
- a first part including the annular inner liner and a first connection element for connecting the first part to the gas turbine engine,
- a second part including the annular outer liner and a second connection element for connecting the second part to the gas turbine engine,
- at least one of the first connection element and of the second connection element being adjacent to the outlet end of the combustor.
- The segmentation of the annular combustor allows reducing at the minimum or eliminating the gap between the outlet of the combustor and the inlet of the gas turbine. As a result, hot gas ingestion is eliminated or effectively reduced, thus producing a much more robust design, which would be also easier and therefore cheaper to repair. In particular, with the design of the present invention, it is also possible to replace only a certain part of the combustor (for example only the inner liner or only the outer liner) on site, because no cutting and welding would be needed.
- Further, reducing the slot between the combustor and the turbine makes it possible to improve the flow path aerodynamics of the transition between combustor and turbine.
- According to an exemplary embodiment of the present invention, the first or the second part further includes a backwall for connecting the annular inner liner and the annular outer liner at the first axial burner end, the backwall comprising at least an hole for coupling a burner to the annular combustor.
- According to another exemplary embodiment of the present invention, the annular combustor is an assembly of the first part, the second part, and at least a third part including:
- a backwall for connecting the annular inner liner and the annular outer liner at the first axial burner end, the backwall providing at least an hole for letting a gas including fuel and air inside the annular combustor,
- a third connection element for connecting the third part to a casing of the gas turbine engine.
- According to the last two described embodiments, it is either possible that the annular combustor of the present invention is made part of two parts, one including the backwall, or is made of three parts, respectively including inner liner, outer liner and backwall. Advantageously, these variants give the possibility to adapt the combustor design of the present invention to the design of different gas turbine engines, for example gas turbine engines having different overall dimensions.
- According to a further embodiment of the present invention, between the backwall and at least one of the inner liner and the annular outer liner a sealing is provided.
- More particularly, the sealing may comprise at least a finger seal.
- The sealing avoids leakages through the contacts between first, second and third part of the annular combustor at the backwall, i.e. where the first, second and third part contact each other.
- According to another exemplary embodiment of the present invention, the annular inner liner and/or the annular outer liner comprise a plurality of effusion holes for letting compressed air to enter the combustor through the annular inner liner and /or the outer liner, in order to cool the annular inner liner and /or the outer liner, respectively.
- According to yet another exemplary embodiment of the present invention, the annular inner liner and/or the annular outer liner comprises at least a cooling passage inside the liner. The cooling passage may be provided between two panels of the annular inner liner and/or of the annular outer liner, bonded together.
- The effusion holes or the cooling passages provide the necessary cooling to the walls of the inner and outer liners.
- According to a second aspect of the present invention, a gas turbine engine comprises a burner, a gas turbine and an annular combustor as above described, between the burner and the gas turbine.
- According to a third aspect of the present invention, a gas turbine comprises an inlet section and at least one connection element adjacent to the inlet section for coupling with an annular combustor as above described.
- The aspects defined above and further aspects of the present invention are apparent from the examples of embodiment to be described hereinafter and are explained with reference to the examples of embodiment. The invention will be described in more detail hereinafter with reference to examples of embodiment but to which the invention is not limited.
-
Fig. 1 is a partial schematic view, sectioned along a longitudinal direction, of a gas turbine engine including a first embodiment of an annular combustor according to the present invention, -
Fig. 2 is a partial schematic view, sectioned along a longitudinal direction, of a gas turbine engine including a second embodiment of an annular combustor according to the present invention, -
Fig. 3 is a partial schematic view, sectioned along a longitudinal direction, of a gas turbine engine including a third embodiment of an annular combustor according to the present invention, -
Fig. 4 is a partial schematic view, sectioned along a longitudinal direction, of a gas turbine engine including a fourth embodiment of an annular combustor according to the present invention, -
Fig. 5 shows a magnified view of the detail V offigure 4 . - Hereinafter, above-mentioned and other features of the present invention are described in details. Various embodiments are described with reference to the drawings, wherein the same reference numerals are used to refer to the same elements throughout. The illustrated embodiments are intended to explain, and not to limit the invention.
-
Figure 1 shows an example of agas turbine engine 1 in a partial schematic sectional view. - The gas turbine engine 1 (not shown as a whole) comprises, in flow series, a compressor section 4 (not shown as a whole), a plurality of burners 2 (only one
burner 2 shown in each of the sectionfigures 1 to 4 ) anannular combustor 10 and agas turbine 3, which are generally arranged in flow series within a casing 5. - The
gas turbine engine 1 is generally arranged about a rotational axis X, which is the rotational axis for rotating components, in particular thecompressor section 4 and thegas turbine 3. The rotational axis X is also coincident with the axis of symmetry of theannular combustor 10, when theannular combustor 10 is assembled to thegas turbine engine 1. - In operation of the
gas turbine engine 1, air is compressed by thecompressor section 4 and delivered to the combustion section, including theburner 2 and theannular combustor 10. The compressed air exiting from thecompressor 4 and flowing towards the combustion section is schematically represented in the attached figures by arrows A. The compressed air enters theburner 2 where is mixed with a gaseous or liquid fuel. The air/fuel mixture is then burned and the combustion gas from the combustion is channelled through thecombustion chamber 10 to thegas turbine section 1, for transforming the energy from the operative gas into working power. The combustion gas flows along thecombustion chamber 10 along a main direction oriented from theburner 2 to thegas turbine 3. Thecombustion section 4 and theburner 2 are not a specific object of the present invention and, therefore, in the following, they will not be described in further detail. - In the following the terms radial, circumferential and axial are with respect to the rotational and symmetry axis X.
- The
annular combustor 10 extends axially between a first axial burner end 11 and a secondaxial outlet end 12 and radially between an annularinner liner 15 and an annularouter liner 16. - The
annular combustor 10 further includes: - a
first part 21 including the annularinner liner 15 and afirst connection element 31 for connecting thefirst part 21 to thegas turbine engine 1, - a
second part 22, distinct fromfirst part 21, including the annularouter liner 16 and asecond connection element 32 for connecting thesecond part 22 to thegas turbine engine 1, - a
backwall 25 for connecting the annularinner liner 15 and the annularouter liner 16 at the first axial burner end 11. Thebackwall 25 comprises a plurality ofholes 26, distributed about the axis X, for coupling a plurality ofrespective burners 2 to theannular combustor 10. - According with the different embodiments of the present invention, at least one of the
first connection element 31 and of thesecond connection element 32 is adjacent to the outlet end 12 of thecombustor 10 and is connectable to a respective gasturbine connection element gas turbine 3, respectively radially inner and outer. Theconnection elements gas turbine 3. - Optionally, the
annular combustor 10 further comprises athird part 23, distinct fromfirst part 21 and from thesecond part 22. Thethird part 23 includes thebackwall 25 and athird connection element 33 for connecting thethird part 22 to the casing 5 of thegas turbine engine 1. - With reference to the embodiment of
figure 1 , theannular combustor 10 is an assembly of: - the
first part 21, with thefirst connection element 31 connecting thefirst part 21 to theinner connection element 17 of thegas turbine 3, - the
second part 22, with thesecond connection element 32 connecting thesecond part 22 to theouter connection element 18 of thegas turbine 3, - the
third part 23, with thethird connection element 33 connecting thethird part 23 to acasing connection element 35 on the casing 5. - The coupling between the first, second and
third part gas turbine 3 and the casing 5, respectively, is circumferentially distributed about the axis X. According to the different embodiments of the present invention, this may be obtained with circumferentialelongated connection elements first part 21,second part 22 andthird part 23 comprises a respective plurality ofconnection elements connection elements gas turbine 3 and ofconnection elements 35 on the casing 5. - With reference to the embodiment of
figures 2 and3 , thethird part 23 is not present and thebackwall 25 is comprised in thefirst part 21 and in thesecond part 22, respectively. Theannular combustor 10 offigure 2 is therefore an assembly of: - the
first part 21, including the annularinner liner 15 and thebackwall 25, with thefirst connection element 31 connecting thefirst part 21 to thecasing connection element 35, - the
second part 22, with thesecond connection element 32 connecting thesecond part 22 to theouter connection element 18 of thegas turbine 3. - The coupling between the first and the
second part gas turbine 3, respectively, is circumferentially distributed about the axis X. According to the different embodiments of the present invention, this may be obtained with circumferentialelongated connection elements first part 21 andsecond part 22 comprises a respective plurality ofconnection elements casing connection elements 35 and ofouter connection elements 18 on thegas turbine 3. - The
annular combustor 10 offigure 3 is instead an assembly of: - the
first part 21, with thefirst connection element 31 connecting thefirst part 21 to theinner connection element 17 of thegas turbine 3, - the
second part 22, including the annularouter liner 16 and thebackwall 25, with thesecond connection element 32 connecting thesecond part 22 to thecasing connection element 35. - The coupling between the first and the
second part gas turbine 3 and the casing 5, respectively, is circumferentially distributed about the axis X. According to the different embodiments of the present invention, this may be obtained with circumferentialelongated connection elements first part 21 andsecond part 22 comprises a respective plurality ofconnection elements inner connection elements 17 on thegas turbine 3 and ofcasing connection elements 35. - In all the embodiments above described, the couplings between the first, second and
third part gas turbine 3 and/or the casing 5 are detachable and may performed by means of screw (or other threaded connection) and/or bolts. This allows connecting and disconnecting eachpart annular combustor 10 independently from the others. - In all embodiments, the mounting of the first, second and
third part annular combustor 10 is mounted adjacent to the inlet section 13 of thegas turbine 3. This avoids or limits hot gas leakages when hot gases from theannular combustor 10 enter thegas turbine 3. - The first, second and
third part backwall 25. To avoid leakages through the contacts between first, second andthird part inner liner 15 and the annularouter liner 16. - In the embodiments of the attached
figures 1 to 4 , the sealing 40 comprises aninner finger seal 41 between the backwall 25 and theinner liner 15 and/or anouter finger seal 42 between the backwall 25 and theouter liner 16. - In the embodiment of
figures 1 and4 , where the first, second andthird part - In the embodiment of
figure 2 , where thebackwall 25 is integrated in thefirst part 21 of theannular combustor 10, only theouter finger seal 42 is present. - In the embodiment of
figure 3 , where thebackwall 25 is integrated in thesecond part 22 of theannular combustor 10, only theinner finger seal 41 is present. - According to other embodiments of the present invention, other sealing devices may be used between the
parts annular combustor 10, in order to avoid hot gas leakages between the backwall 25 and theinner liner 15 and/or between the backwall 25 and theouter liner 16. - In the embodiment of
figures 1 to 3 , the annularinner liner 15 and the annularouter liner 16 comprise a plurality of effusion holes 50 for letting compressed air (represented by arrows A) to enter the combustor 1) through the walls of the annularinner liner 15 and theouter liner 16, in order to cool theannular liners - The embodiment of
figure 4 is similar to the embodiment offigure 1 , i.e it comprises the first, second andthird parts gas turbine 3 and to the casing 5. The embodiment offigure 4 is different from the embodiment offigure 1 for the fact that the annularinner liner 15 and the annularouter liner 16 comprises one ormore cooling passages 60 inside therespective liner annular combustor 10 through thecooling passages 60. Eachcooling passage 60 is obtained inside the walls of the annularinner liner 15 and the annularouter liner 16 by means of at least twopanels combustor 10, where hot gasses flow) and external (i.e. facing a volume external to thecombustor 10, where compressed air A from thecompressor 4 flows). Eachcooling passage 60 comprises aninlet 63, through which compressed air A enters thepassage 60, and anoutlet 64, through which compressed air A exits thepassage 60 to enter theannular combustor 10. - According to other embodiments (not shown) of the present invention, mixed solutions are possible:
- the
annular liners cooling passages 60, for example on different zones of theannular liners - one of the
annular liners passages 60.
Claims (14)
- An annular combustor (10) for a gas turbine engine (1), the annular combustor (10) axially extending between a first axial burner end (11) and a second axial outlet end (12), the annular combustor (10) radially extending between an annular inner liner (15) and an annular outer liner (16), the annular combustor (10) being at least an assembly of:- a first part (21) including the annular inner liner (15) and a first connection element (31) for connecting the first part (21) to the gas turbine engine (1),- a second part (22) including the annular outer liner (16) and a second connection element (32) for connecting the second part (22) to the gas turbine engine (1),- at least one of the first connection element (31) and of the second connection element (32) being adjacent to the outlet end (12) of the combustor (10).
- The annular combustor (10) according to claim 1, wherein the first (21) or the second part (22) further includes a backwall (25) for connecting the annular inner liner (15) and the annular outer liner (16) at the first axial burner end (11), the backwall (25) comprising at least an hole (26) for coupling a burner to the annular combustor (10).
- The annular combustor (10) according to claim 1, wherein the annular combustor (10) is an assembly of the first part (21), the second part (22), and at least a third part (23) including:- a backwall (25) for connecting the annular inner liner (15) and the annular outer liner (16) at the first axial burner end (11), the backwall (25) providing at least an hole (26) for letting a gas including fuel and air inside the annular combustor (10),- a third connection element (33) for connecting the third part (22) to a casing of the gas turbine engine (1).
- The annular combustor (10) according to claim 2 or 3, wherein between the backwall (25) and at least one of the inner liner (15) and the annular outer liner (16) a sealing (40) is provided.
- The annular combustor (10) according to claim 4, wherein the sealing comprises at least a finger seal (41, 42).
- The annular combustor (10) according to any of the claims 2 to 5, the annular inner liner (15) and/or the annular outer liner (16) comprise a plurality of effusion holes (50) for letting compressed air to enter the combustor (10) through the annular inner liner (15) and /or the outer liner (16), in order to cool the annular inner liner (15) and /or the outer liner (16), respectively.
- The annular combustor (10) according to any of the claims 2 to 5, the annular inner liner (15) and/or the annular outer liner (16) comprises at least a cooling passage (60) inside the liner.
- The annular combustor (10) according to claim 7, wherein the cooling passage (60) is provided between two panels (61, 62) of the annular inner liner (15) and/or of the annular outer liner (16), bonded together.
- A gas turbine engine (1) comprising a compressor (4), a gas turbine (3), a burner (2), and an annular combustor (10) according to any of the previous claims, between the burner (2) and the gas turbine (3).
- A gas turbine engine (1) according to claim 9, wherein the gas turbine (3) comprises an inlet section (13) and at least one connection element (17, 18) adjacent to the inlet section (13) for coupling with at least one of the first connection element (31) and the second connection element (32) of the annular combustor (10).
- A gas turbine engine (1) according to claim 9 or 10, further including a casing (5) with a further connection element (35) for coupling with one of the first or second or the third connection element (31, 32, 33) of the annular combustor (10).
- A gas turbine engine (1) according to claim 10 or 11, wherein at least one of said couplings of the first, second or third connection element (31, 32, 33) is of the threaded type.
- A gas turbine engine (1) according to any of the claims 9 to 12, wherein the outlet end (12) of the annular combustor (10) is mounted adjacent to the inlet section (13) for avoiding or limiting leakages of hot gases when hot gases from the annular combustor (10) enters the gas turbine (3).
- A gas turbine (3) for a gas turbine engine (1) comprising an inlet section (13) and at least one connection element (17, 18) adjacent to the inlet section (13) for coupling with at least one of the first connection element (31) and the second connection element (32) of an annular combustor (10) according to any of the claims 1 to 8.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15162999.5A EP3078914A1 (en) | 2015-04-09 | 2015-04-09 | Annular combustor for a gas turbine engine |
EP16713399.0A EP3256782A1 (en) | 2015-04-09 | 2016-03-29 | Annular combustor for a gas turbine engine |
PCT/EP2016/056793 WO2016162239A1 (en) | 2015-04-09 | 2016-03-29 | Annular combustor for a gas turbine engine |
US15/563,687 US20180073738A1 (en) | 2015-04-09 | 2016-03-29 | Annular combustor for a gas turbine engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15162999.5A EP3078914A1 (en) | 2015-04-09 | 2015-04-09 | Annular combustor for a gas turbine engine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3078914A1 true EP3078914A1 (en) | 2016-10-12 |
Family
ID=52823518
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15162999.5A Withdrawn EP3078914A1 (en) | 2015-04-09 | 2015-04-09 | Annular combustor for a gas turbine engine |
EP16713399.0A Withdrawn EP3256782A1 (en) | 2015-04-09 | 2016-03-29 | Annular combustor for a gas turbine engine |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16713399.0A Withdrawn EP3256782A1 (en) | 2015-04-09 | 2016-03-29 | Annular combustor for a gas turbine engine |
Country Status (3)
Country | Link |
---|---|
US (1) | US20180073738A1 (en) |
EP (2) | EP3078914A1 (en) |
WO (1) | WO2016162239A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3061761A1 (en) * | 2017-01-10 | 2018-07-13 | Safran Aircraft Engines | COMBUSTION CHAMBER FOR TURBOMACHINE |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015162795A1 (en) * | 2014-04-25 | 2015-10-29 | 三菱日立パワーシステムズ株式会社 | Gas turbine combustor and gas turbine provided with said combustor |
US10823418B2 (en) * | 2017-03-02 | 2020-11-03 | General Electric Company | Gas turbine engine combustor comprising air inlet tubes arranged around the combustor |
US11840032B2 (en) | 2020-07-06 | 2023-12-12 | Pratt & Whitney Canada Corp. | Method of repairing a combustor liner of a gas turbine engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1578474A (en) * | 1976-06-21 | 1980-11-05 | Gen Electric | Combustor mounting arrangement |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5289677A (en) * | 1992-12-16 | 1994-03-01 | United Technologies Corporation | Combined support and seal ring for a combustor |
-
2015
- 2015-04-09 EP EP15162999.5A patent/EP3078914A1/en not_active Withdrawn
-
2016
- 2016-03-29 US US15/563,687 patent/US20180073738A1/en not_active Abandoned
- 2016-03-29 EP EP16713399.0A patent/EP3256782A1/en not_active Withdrawn
- 2016-03-29 WO PCT/EP2016/056793 patent/WO2016162239A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1578474A (en) * | 1976-06-21 | 1980-11-05 | Gen Electric | Combustor mounting arrangement |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3061761A1 (en) * | 2017-01-10 | 2018-07-13 | Safran Aircraft Engines | COMBUSTION CHAMBER FOR TURBOMACHINE |
WO2018130765A1 (en) * | 2017-01-10 | 2018-07-19 | Safran Aircraft Engines | Turbine engine combustion chamber |
CN110168284A (en) * | 2017-01-10 | 2019-08-23 | 赛峰航空器发动机 | Turbine engine combustion chamber |
CN110168284B (en) * | 2017-01-10 | 2021-02-23 | 赛峰航空器发动机 | Turbine engine combustion chamber |
US11614234B2 (en) | 2017-01-10 | 2023-03-28 | Safran Aircraft Engines | Turbine engine combustion chamber |
Also Published As
Publication number | Publication date |
---|---|
WO2016162239A1 (en) | 2016-10-13 |
EP3256782A1 (en) | 2017-12-20 |
US20180073738A1 (en) | 2018-03-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8505304B2 (en) | Fuel nozzle detachable burner tube with baffle plate assembly | |
US9175857B2 (en) | Combustor cap assembly | |
US9267690B2 (en) | Turbomachine combustor nozzle including a monolithic nozzle component and method of forming the same | |
US10087844B2 (en) | Bundled tube fuel nozzle assembly with liquid fuel capability | |
US20150292438A1 (en) | Method and apparatus for cooling combustor liner in combustor | |
JP6118024B2 (en) | Combustor nozzle and method of manufacturing combustor nozzle | |
US20130232977A1 (en) | Fuel nozzle and a combustor for a gas turbine | |
US20150027126A1 (en) | System for providing fuel to a combustor | |
US10422533B2 (en) | Combustor with axially staged fuel injector assembly | |
US10415831B2 (en) | Combustor assembly with mounted auxiliary component | |
US11339966B2 (en) | Flow control wall for heat engine | |
EP3078914A1 (en) | Annular combustor for a gas turbine engine | |
US20180112875A1 (en) | Combustor assembly with air shield for a radial fuel injector | |
US9032735B2 (en) | Combustor and a method for assembling the combustor | |
CA2936200C (en) | Combustor cooling system | |
US10584610B2 (en) | Combustion dynamics mitigation system | |
JP7202090B2 (en) | Integrated fuel nozzle connection | |
CN115949968A (en) | Combustor swirler to pseudo dome attachment and interface with CMC dome | |
US10634344B2 (en) | Fuel nozzle assembly with fuel purge | |
JP2011169579A (en) | Burner device | |
US10669942B2 (en) | Endcover assembly for a combustor | |
US20170350321A1 (en) | Bundled Tube Fuel Nozzle Assembly with Tube Extensions | |
US10690057B2 (en) | Turbomachine combustor end cover assembly with flame detector sight tube collinear with a tube of a bundled tube fuel nozzle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20170413 |