WO2017077955A1 - 燃焼用筒、ガスタービン燃焼器及びガスタービン - Google Patents
燃焼用筒、ガスタービン燃焼器及びガスタービン Download PDFInfo
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- WO2017077955A1 WO2017077955A1 PCT/JP2016/082048 JP2016082048W WO2017077955A1 WO 2017077955 A1 WO2017077955 A1 WO 2017077955A1 JP 2016082048 W JP2016082048 W JP 2016082048W WO 2017077955 A1 WO2017077955 A1 WO 2017077955A1
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- region
- cooling
- combustor
- combustion cylinder
- combustion
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/16—Cooling of plants characterised by cooling medium
- F02C7/18—Cooling of plants characterised by cooling medium the medium being gaseous, e.g. air
-
- 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
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/04—Air inlet arrangements
- F23R3/06—Arrangement of apertures along the flame tube
-
- 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
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/14—Casings modified therefor
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/08—Heating, heat-insulating or cooling means
- F01D5/081—Cooling fluid being directed on the side of the rotor disc or at the roots of the blades
- F01D5/082—Cooling fluid being directed on the side of the rotor disc or at the roots of the blades on the side of the rotor disc
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/023—Transition ducts between combustor cans and first stage of the turbine in gas-turbine engines; their cooling or sealings
-
- 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
- F23R3/002—Wall structures
-
- 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
-
- 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
- F23R3/46—Combustion chambers comprising an annular arrangement of several essentially tubular flame tubes within a common annular casing or within individual casings
-
- 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
- F23R3/50—Combustion chambers comprising an annular flame tube within an annular casing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/35—Combustors or associated equipment
-
- 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
- F23R2900/03041—Effusion cooled combustion chamber walls or domes
-
- 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
- F23R2900/03042—Film cooled combustion chamber walls or domes
-
- 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
- F23R2900/03043—Convection cooled combustion chamber walls with means for guiding the cooling air flow
-
- 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
- F23R2900/03045—Convection cooled combustion chamber walls provided with turbolators or means for creating turbulences to increase cooling
Definitions
- General gas turbine is composed of a compressor, a combustor, and a turbine.
- the air taken in from the air intake port is compressed by the compressor to become high-temperature and high-pressure compressed air.
- the combustor the fuel is supplied to the compressed air and burned, so that the high-temperature and high-pressure is burned.
- the combustion gas (working fluid) is obtained, the turbine is driven by the combustion gas, and the generator connected to the turbine is driven.
- the present invention solves the above-described problems, and provides a combustion cylinder, a gas turbine combustor, and a gas turbine that improve the reliability and improve the life by efficiently cooling the combustion cylinder. With the goal.
- the amount of flow of the cooling medium is set larger than that of the second region. Regardless, the end of the combustion cylinder can be properly cooled by the cooling medium.
- connection portion is configured such that an axial end portion of the combustion cylinder and an axial end portion of the transition piece overlap in a radial direction, and the cooling portion includes the combustion portion. It is provided at the axial end of the cylinder or the axial end of the transition piece.
- the end of the combustion cylinder can be efficiently cooled by the cooling medium.
- the cooling section is provided at a downstream end of the combustion cylinder in the flow direction of the combustion gas along the flow direction of the combustion gas and at a predetermined interval in the circumferential direction.
- the average interval of the plurality of cooling passages in the second region is set smaller than the average interval of the plurality of cooling passages in the first region.
- the cooling medium flows from the plurality of first passages to the joining portion and joins, and then flows through the second passage having an increased number to be discharged, and the cooling area at the end portion of the combustion cylinder to be heated is increased. And the end of the combustion cylinder can be efficiently cooled.
- the transition piece has a cylindrical shape on the upstream side in the flow direction of the combustion gas, and the downstream side in the flow direction of the combustion gas has a length of the first side along the radial direction of the gas turbine.
- the second side along the circumferential direction of the gas turbine has a long rectangular shape, the first region is provided on the first side, and the second region is provided on the second side. It is characterized by.
- the end of the combustion cylinder connected to the transition piece can be efficiently cooled over the entire circumference.
- the outer region includes an outer first region that constitutes the first region, and an outer first region that constitutes the second region outside of the outer first region in the radial direction of the gas turbine.
- the outer second region is set to be larger than the outer first region.
- the outer region includes an outer first region that constitutes the first region, and an outer first region that constitutes the second region outside of the outer first region in the radial direction of the gas turbine.
- the outer second region is set larger than the outer first region
- the inner region includes the inner first region constituting the first region and the inner first region. It is set to an inner second region constituting the second region inside the radial direction of the gas turbine, and the outer second region is set larger than the inner second region.
- the end of the combustion cylinder in the second region can be efficiently cooled with a simple configuration.
- the cooling section is provided at a downstream end of the combustion cylinder in the flow direction of the combustion gas along the flow direction of the combustion gas and at a predetermined interval in the circumferential direction.
- the number of cooling passages in the first region is set to be smaller than the number of cooling passages in the second region.
- an average interval in the plurality of cooling passages is set to 5.5 mm to 8.5 mm in the first region, and is set to 2.0 mm to 5.0 mm in the second region. It is characterized by that.
- the end of the combustion cylinder is set.
- the portion can be efficiently cooled.
- the combustion cylinder in which the compressed air and the fuel are mixed and burned, and the downstream end of the combustion cylinder in the flow direction of the combustion gas are along the circumferential direction. And a transition piece that is inserted and connected via a radial gap.
- a compressor that compresses air a combustor that mixes and burns compressed air and fuel compressed by the compressor, and a combustion gas generated by the combustor rotate.
- a turbine for obtaining power, and the gas turbine combustor is used as the combustor.
- the end of the combustion cylinder can be appropriately cooled by the cooling medium, and the reliability of the gas turbine can be improved by efficiently cooling the combustion cylinder. At the same time, the service life can be extended.
- combustion cylinder gas turbine combustor, and gas turbine of the present invention, it is possible to improve the reliability and improve the life by efficiently cooling the combustion cylinder.
- FIG. 1 is a cross-sectional view illustrating a connection portion between a combustor inner cylinder and a combustor tail cylinder in the gas turbine combustor according to the first embodiment.
- FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1 showing a connection portion between the combustor inner cylinder and the combustor tail cylinder.
- FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2 showing a connecting portion between the combustor inner cylinder and the combustor tail cylinder.
- 4 is a cross-sectional view taken along the line IV-IV in FIG. 1 showing the connection between the combustor inner cylinder and the combustor tail cylinder.
- FIG. 9 showing a connection portion between the combustor inner cylinder and the combustor tail cylinder.
- FIG. 11 is a cross-sectional view taken along the line XI-XI in FIG. 9 showing a connection portion between the combustor inner cylinder and the combustor tail cylinder.
- FIG. 12 is a cross-sectional view illustrating a connection portion between a combustor inner cylinder and a combustor tail cylinder in the gas turbine combustor according to the third embodiment.
- FIG. 13 is sectional drawing showing the modification of the connection part of the combustor inner cylinder and combustor tail cylinder in the gas turbine combustor of 3rd Embodiment.
- FIG. 14 is a cross-sectional view illustrating a connection portion between a combustor inner cylinder and a combustor tail cylinder in the gas turbine combustor according to the fourth embodiment.
- FIG. 6 is a schematic configuration diagram illustrating a gas turbine according to the first embodiment
- FIG. 7 is a schematic diagram illustrating a gas turbine combustor
- FIG. 8 is a perspective view illustrating a combustor tail tube.
- the compressor 11 has an air intake 20 for taking in air, an inlet guide vane (IGV: Inlet Guide Vane) 22 is disposed in the compressor casing 21, and a plurality of stationary vanes 23 and moving blades 24 are provided. Arranged alternately in the front-rear direction (the axial direction of the rotor 32 to be described later), the bleed chamber 25 is provided on the outside thereof.
- the combustor 12 is combustible by supplying fuel to the compressed air compressed by the compressor 11 and igniting it.
- a plurality of stationary blades 27 and moving blades 28 are alternately disposed in a turbine casing 26 in the front-rear direction (the axial direction of a rotor 32 described later).
- An exhaust chamber 30 is disposed downstream of the turbine casing 26 via an exhaust casing 29, and the exhaust chamber 30 has an exhaust diffuser 31 that is continuous with the turbine 13.
- the compressor casing 21 of the compressor 11 is supported by the legs 35
- the turbine casing 26 of the turbine 13 is supported by the legs 36
- the exhaust chamber 30 is supported by the legs 37. Yes.
- the combustor outer cylinder 41 is supported by a combustor inner cylinder 42 with a predetermined interval inside, and a combustor tail cylinder 42 is disposed at the tip of the combustor inner cylinder 42.
- the cylinder 43 is connected to constitute a combustor casing.
- the combustor inner cylinder 42 is located at the center of the interior, the pilot combustion burner 44 is disposed, and a plurality of main combustion chamber inner cylinders 42 are surrounded on the inner peripheral surface of the combustor inner cylinder 42 along the circumferential direction.
- a combustion burner 45 is arranged.
- the combustor tail cylinder 43 is connected to a bypass pipe 46, and a bypass valve 47 is provided in the bypass pipe 46.
- the pilot combustion burner 44 includes a pilot cone 52 supported by the combustor inner cylinder 42, a pilot nozzle 53 disposed inside the pilot cone 52, and swirler vanes (swirler vanes) 54 provided on the outer periphery of the pilot nozzle 53. It is composed of Each main combustion burner 45 includes a burner cylinder 55, a main nozzle 56 disposed inside the burner cylinder 55, and swirl vanes (swirler vanes) 57 provided on the outer periphery of the main nozzle 56.
- a pilot fuel line (not shown) is connected to the fuel port 58 of the pilot nozzle 53, and a main combustion line (not shown) is connected to the fuel port 59 of each main nozzle 56.
- the combustor tail cylinder 43 is formed into a cylindrical shape by bending a flat plate and welding ends (welded portions W) to each other. At this time, one end of the combustor tail cylinder 43 is bent into a cylindrical shape, while the other end is bent and drawn into a rectangular shape. Therefore, the combustor tail cylinder 43 includes a cylindrical part 61, a shape transition part 62, and a rectangular cylinder part 63, and the cylindrical part 61 and the rectangular cylinder part 63 are smoothly continued by the shape transition part 62.
- a plurality of the combustor tail cylinders 43 are arranged in a ring shape at predetermined intervals in the circumferential direction of the gas turbine 10 (see FIG. 6).
- the downstream end 71 of the combustor inner cylinder 42 in the flow direction of the combustion gas G is the upstream end 71 (cylinder) of the combustor tail cylinder 43 in the flow direction of the combustion gas G.
- Part 61) through a radial gap along the circumferential direction.
- the spring clip (spring member) 66 is interposed in the circumferential direction of the position where the end part 71 of the combustor inner cylinder 42 and the cylindrical part 61 of the combustor tail cylinder 43 overlap in the radial direction, so that the combustor inner cylinder 42 and the combustor tail cylinder 43 are connected.
- the spring clip 66 is an elastically deformable leaf spring member, and its downstream end in the flow direction of the combustion gas G is fixed to the outer peripheral surface of the cylindrical portion 61 of the combustor inner cylinder 42, while the combustion gas The upstream end in the G flow direction is lifted from the outer peripheral surface of the combustor inner cylinder 42 and is sandwiched between the buggy clip 67 and the inner surface of the cylindrical portion 61.
- an extension line L extending linearly toward the downstream side in the flow direction of the combustion gas G along the axial direction of the outer surface of the combustor inner cylinder 42 is burned. It contacts at the intersection (connection point D) with the inner surface of the shape transition part 62 of the breech tube 43. At this time, an angle formed between the extension line L at the intersection (connection point D) and the inner surface of the shape transition portion 62 is defined as a connection angle ⁇ .
- the distance from the rear end of the combustor inner cylinder 42 to the connection point D is constant in the circumferential direction, and the position of the connecting bent portion between the cylindrical portion 61 and the shape transition portion 62 is axial in the circumferential direction. Is different. However, the position of the connecting bent portion may be constant in the axial direction in the circumferential direction, and the distance from the rear end of the combustor inner cylinder 42 to the connection point D may be different in the circumferential direction.
- connection angle ⁇ 0 is defined.
- connection angle ⁇ 2 is small because the inclination angle of the wall surface of the shape transition portion 62 is small.
- connection angle ⁇ ⁇ b> 1 is large in the radially outer and inner second regions ⁇ ⁇ b> 3 and ⁇ ⁇ b> 4 in the gas turbine 10 because the wall surface of the shape transition portion 62 has a large inclination angle.
- the first cooling unit 81 is provided in the first regions ⁇ 1 and ⁇ 2 where the connection angle ⁇ 2 is small
- the second cooling unit 91 is provided in the second regions ⁇ 3 and ⁇ 4 where the connection angle ⁇ 1 is large.
- the first regions ⁇ 1 and ⁇ 2 are provided on the first sides 64a and 64b (see FIG. 8)
- the second regions ⁇ 3 and ⁇ 4 are provided on the second sides 65a and 65b (see FIG. 8). Yes.
- the circumferential length of the second region ⁇ 3 is set longer than the circumferential length of the second region ⁇ 4.
- the first cooling unit 81 is an end 71 in the axial direction of the combustor inner cylinder 42, and includes first regions ⁇ ⁇ b> 1 and ⁇ ⁇ b> 2 (first sides 64 a and 64 b side). ).
- the first cooling unit 81 is arranged along the flow direction of the combustion gas G at the downstream end 71 in the flow direction of the combustion gas G in the combustor inner cylinder 42 and at a predetermined interval in the circumferential direction of the combustor inner cylinder 42. It is a plurality of cooling passages that are provided through the space.
- the second cooling portion 91 is an end portion 71 in the axial direction of the combustor inner cylinder 42, and is provided in the second regions ⁇ ⁇ b> 3 and ⁇ ⁇ b> 4 (second sides 65 a and 65 b side). It has been.
- the second cooling unit 91 is arranged along the flow direction of the combustion gas G at the downstream end 71 in the flow direction of the combustion gas G in the combustor inner cylinder 42 and at a predetermined interval in the circumferential direction of the combustor inner cylinder 42. It is a plurality of cooling passages that are provided through the space.
- the second cooling unit 91 includes a plurality of first passages 92 and second passages 93 that are formed along the axial direction of the combustor inner tube 42 and at predetermined intervals in the circumferential direction, and the combustor inner tube 42.
- the first cooling path 92 is constituted by the first path 92, the second path 93, and the joining portion 94.
- the first passage 92 has one end communicating with the second cooling hole 95 and the other end communicating with the merging portion 94.
- the second passage 93 has one end communicating with the merging portion 94 and the other end opening on the end surface of the combustor inner cylinder 42.
- the second cooling hole 95 opens in the radial gap S.
- the pitch (interval) P2 of the second passage 93 in the second cooling section 91 is set to be smaller than the pitch P1 of the first cooling passage 82 and the first passage 92 (P1> P2).
- the number of the two passages 93 is increased.
- the inner diameters of the first cooling passage 82, the first passage 92, and the second passage 93 are the same.
- the first cooling unit 81 and the second cooling unit 91 are provided through the thickness of the combustor inner cylinder 42, the first cooling unit 81 and the second cooling unit 91 are provided in the first regions ⁇ 1 and ⁇ 2 having a small connection angle ⁇ 2.
- the total passage area becomes larger.
- the flow rate of compressed air at 91 increases.
- a part of the compressed air compressed by the compressor 11 is introduced into the radial gap S through the gap of the spring clip 66.
- the compressed air in the radial gap S is introduced into the first cooling passages 82 from the first cooling holes 83 and flows through the first cooling passages 82, thereby causing the end of the combustor inner cylinder 42 to end.
- the first regions ⁇ 1 and ⁇ 2 in the portion 71 are cooled.
- the compressed air in the radial gap S is introduced from the second cooling holes 95 to the first passages 92 and merges at the merging section 94.
- the compressed air is introduced into the second passages 93 from the junctions 94 and flows through the second passages 93 to cool the second regions ⁇ 3 and ⁇ 4 at the end 71 of the combustor inner cylinder 42.
- the combustor tail cylinder 43 has a small connection angle ⁇ 2 in the first regions ⁇ 1 and ⁇ 2 and a large connection angle ⁇ 1 in the second regions ⁇ 3 and ⁇ 4.
- the combustion gas G flowing through the cylinder 42 flows into the shape transition section 62 from the end 71, and the end 71 of the combustor inner cylinder 42 is likely to be heated.
- the second cooling unit 91 causes a larger amount of compressed air to flow through the second passages 93 than the first cooling unit 81, the second region ⁇ 3 at the end portion 71 of the combustor inner cylinder 42 that is easily heated. , ⁇ 4 can be efficiently cooled.
- cooling portions 81 and 91 for cooling with compressed air are provided at the connection portion C between the combustor inner cylinder 42 and the combustor tail cylinder 43, and the end portion 71 of the combustor inner cylinder 42 is heated by the combustion gas. Is suppressed by the compressed air of the cooling parts 81 and 91. At this time, in the second regions ⁇ 3 and ⁇ 4 where the connection angle ⁇ 1 is large, the end portion 71 of the combustor inner cylinder 42 is likely to be heated to high temperature by the combustion gas.
- connection portion C is configured by overlapping the end portion 71 of the combustor inner cylinder 42 and the cylindrical portion 61 of the combustor tail cylinder 43 in the radial direction, and cooling portions 81 and 91. Is provided at the end 71 of the combustor inner cylinder 42 in the axial direction. The end 71 of the combustor inner cylinder 42 can be efficiently cooled by the compressed air.
- a plurality of first cooling passages 82 provided at predetermined intervals in the circumferential direction are provided as the first cooling portion 81, and predetermined intervals are provided as the second cooling portion 91 in the circumferential direction.
- the plurality of first passages 92 are provided, and the pitch P2 of the plurality of second passages 93 is set smaller than the pitch P1 of the plurality of first cooling passages 82. Therefore, the cooling parts 81 and 91 can be simplified as the plurality of passages 82, 92 and 93 along the flow direction of the combustion gas, and the cooling parts 81 and 91 can be simplified.
- one end portion of the passages 82, 92, 93 of the cooling portions 81, 91 is opened in the radial gap S, and the other end portion is the flow direction of the combustion gas in the combustor inner cylinder 42. It opens to the end face of the downstream side. Therefore, after the end portion 71 of the combustor inner cylinder 42 is cooled by the compressed air taken from the outside, the exhaust gas is discharged into the combustion gas passage, thereby suppressing a decrease in combustor efficiency.
- the second cooling hole 95 whose one end opens into the radial gap S and the first passage 92 whose one end communicates with the second cooling hole 95.
- the second passage 93 having a larger number than the first passage 92 whose one end opens to the end face of the combustor inner cylinder 42, and the other end of the first passage 92 and the other end of the second passage 93 communicate with each other.
- a merging portion 94 is provided. Accordingly, the compressed air flows from the plurality of second cooling holes 95 to the joining portion 94 through the first passage 92 and then joins, and then flows through the second passage 93 having an increased number to be discharged.
- the cooling area at the end 71 of the combustor inner cylinder 42 is increased, and the end 71 of the combustor inner cylinder 42 can be efficiently cooled.
- the combustor tail cylinder 43 includes a cylindrical part 61, a shape transition part 62, and a rectangular cylinder part 63, and the first regions ⁇ 1 and ⁇ 2 are the first along the radial direction.
- the second regions ⁇ 3 and ⁇ 4 are provided on the first sides 64a and 64b, and the second regions ⁇ 3 and ⁇ 4 are provided on the second sides 65a and 65b along the circumferential direction. Therefore, even if the combustor tail cylinder 43 changes from a cylindrical shape to a rectangular cylinder shape, the end portion 71 of the combustor inner cylinder 42 connected to the combustor tail cylinder 43 can be efficiently cooled over the entire circumference. it can.
- the circumferential length of the second region ⁇ 3 located outside the radial direction of the gas turbine 10 is set to the circumference of the second region ⁇ 4 located inside the radial direction of the gas turbine 10. It is set longer than the direction length. Therefore, by setting the circumferential lengths of the second regions ⁇ 3 and ⁇ 4 according to the shape of the combustor tail cylinder 43, the end portion 71 of the combustor inner cylinder 42 can be efficiently cooled over the entire circumference.
- FIG. 9 is a cross-sectional view illustrating a connection portion between a combustor inner cylinder and a combustor tail cylinder in the gas turbine combustor according to the second embodiment
- FIG. 10 is a diagram illustrating a connection portion between the combustor inner cylinder and the combustor tail cylinder
- FIG. 11 is a cross-sectional view taken along the line XX of FIG. 9, and FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG.
- symbol is attached
- cooling parts 81 and 91 for cooling with compressed air as a cooling medium are provided at the connection part C between the combustor inner cylinder 42 and the combustor tail cylinder 43. It has been.
- the cooling units 81 and 91 are provided at the end 71 of the combustor inner cylinder 42, and the compressed air in the first cooling unit 81 provided in the first regions ⁇ 1 and ⁇ 2 in which the radial clearance S1 is wide.
- the flow rate of compressed air in the second cooling section 91 provided in the second regions ⁇ 3 and ⁇ 4, in which the radial clearance S2 is narrower than the radial clearance S1 of the first regions ⁇ 1 and ⁇ 2, is set larger. Yes.
- the combustor tail tube 43 is connected to the end portion 71 of the combustor inner tube 42 and the combustor tail.
- the radial gaps S1 and S2 with the shape transition portion 62 of the cylinder 43 are different in the circumferential direction. That is, in the first regions ⁇ 1 and ⁇ 2 on both sides of the gas turbine 10 in the circumferential direction, the wall surface of the shape transition portion 62 is linear, and thus the radial clearance S1 between the combustor inner cylinder 42 and the combustor tail cylinder 43. Is wider than the radial gap S2 of the second regions ⁇ 3, ⁇ 4.
- the wall surface of the shape transition portion 62 is inclined toward the center portion side. Is narrower than the radial gap S1 between the first regions ⁇ 1 and ⁇ 2. Therefore, in the second regions ⁇ 3 and ⁇ 4, the combustion gas G flowing through the combustor inner cylinder 42 flows into the shape transition part 62 from the end 71, and the end 71 of the combustor inner cylinder 42 is heated to reduce the high temperature oxidation. Meat may be generated.
- the first cooling unit 81 is provided in the first regions ⁇ 1 and ⁇ 2 in which the radial gap S1 is wide, and the second cooling unit 91 is more in the radial gap S2 than the radial gap S1 in the first regions ⁇ 1 and ⁇ 2.
- the first regions ⁇ 1 and ⁇ 2 are provided on the first sides 64a and 64b (see FIG. 8), and the second regions ⁇ 3 and ⁇ 4 are provided on the second sides 65a and 65b (see FIG. 8). Yes.
- the circumferential length of the second region ⁇ 3 is set longer than the circumferential length of the second region ⁇ 4.
- the circumferential lengths of the first regions ⁇ 1 and ⁇ 2 are set to be the same. Note that the welded portion W (see FIG. 8) in the combustor tail cylinder 43 is disposed in the first region ⁇ 2.
- the first cooling unit 81 and the second cooling unit 91 are provided through the thickness of the combustor inner cylinder 42, and thus are provided in the first regions ⁇ 1 and ⁇ 2 in which the radial clearance S1 is wide.
- the total passage area of the compressed air in the second cooling section 91 (second passage 93) to be produced becomes large.
- the radial clearance S2 is larger than the radial clearance S1 in the first regions ⁇ 1 and ⁇ 2 with respect to the flow rate of the compressed air in the first cooling unit 81 provided in the first regions ⁇ 1 and ⁇ 2 where the radial clearance S1 is wide.
- the flow rate of compressed air in the second cooling unit 91 provided in the second regions ⁇ 3 and ⁇ 4 that are narrow is increased.
- the compressed air in the radial gap S is introduced into the first cooling passages 82 from the first cooling holes 83 and flows through the first cooling passages 82, thereby causing the end of the combustor inner cylinder 42 to end.
- the first regions ⁇ 1 and ⁇ 2 in the portion 71 are cooled.
- the compressed air in the radial gap S is introduced from the second cooling holes 95 to the first passages 92 and merges at the merging section 94.
- the compressed air is introduced into the second passages 93 from the junctions 94 and flows through the second passages 93 to cool the second regions ⁇ 3 and ⁇ 4 at the end 71 of the combustor inner cylinder 42.
- the combustor tail cylinder 43 has a wide radial gap S1 in the first regions ⁇ 1 and ⁇ 2 and a narrow radial gap S2 in the second regions ⁇ 3 and ⁇ 4, combustion occurs in the second regions ⁇ 3 and ⁇ 4.
- the combustion gas G flowing through the combustor inner tube 42 flows into the shape transition portion 62 from the end portion 71, and the end portion 71 of the combustor inner tube 42 is easily heated.
- the second cooling unit 91 causes a larger amount of compressed air to flow through the second passages 93 than the first cooling unit 81, the second region ⁇ 3 at the end portion 71 of the combustor inner cylinder 42 that is easily heated. , ⁇ 4 can be efficiently cooled.
- the combustor inner cylinder 42 in which the compressed air and the fuel are mixed and burned inside, and the downstream side in the combustion gas flow direction in the combustor inner cylinder 42.
- the combustor tail cylinder 43 inserted through the radial gap S and connected to the combustor inner cylinder 42 and the combustor tail cylinder 43 at the connection C.
- Compressed air (cooling medium)
- the cooling portions 81 and 91 that are cooled by the first cooling portion 81 are provided, and the second radial gap S2 is narrow relative to the flow rate of the compressed air by the first cooling portion 81 that cools the first regions ⁇ 1 and ⁇ 2 where the radial clearance S1 is wide.
- a large amount of compressed air is set in the second cooling section 91 that cools the regions ⁇ 3 and ⁇ 4.
- cooling portions 81 and 91 for cooling with compressed air are provided at the connection portion C between the combustor inner cylinder 42 and the combustor tail cylinder 43, and the end portion 71 of the combustor inner cylinder 42 is heated by the combustion gas. Is suppressed by the compressed air of the cooling parts 81 and 91. At this time, in the second regions ⁇ 3 and ⁇ 4 in which the radial gap S2 is narrow, the end portion 71 of the combustor inner cylinder 42 is likely to be heated to high temperature by the combustion gas.
- the flow rate of compressed air in the second cooling unit 91 is larger than the flow rate of compressed air by the first cooling unit 81, the inside of the combustor regardless of the shape of the combustor tail cylinder 43 in the circumferential direction.
- the end portion 71 of the cylinder 42 can be appropriately cooled by the compressed air. As a result, it is possible to improve the reliability by efficiently cooling the combustor inner cylinder 42, and it is possible to reduce the repair cost and extend the life.
- the flow rate of compressed air to the second regions ⁇ 3 and ⁇ 4 having a large connection angle ⁇ 1 is larger than the flow rate of compressed air to the first regions ⁇ 1 and ⁇ 2 having a small connection angle ⁇ 2.
- the flow of compressed air to the second regions ⁇ 3, ⁇ 4 with the narrow radial gap S2 is smaller than the flow amount of the compressed air to the first regions ⁇ 1, ⁇ 2 with the wide radial gap S1.
- a large amount was set.
- the connection angle ⁇ 2 is small and the radial gap S1 is wide and the connection is made with respect to the flow rate of the compressed air to the first regions ⁇ 1 and ⁇ 2.
- a large amount of compressed air may be set to the second regions ⁇ 3 and ⁇ 4 where the angle ⁇ 1 is large and the radial gap S2 is narrow.
- FIG. 12 is a cross-sectional view illustrating a connection portion between a combustor inner cylinder and a combustor tail cylinder in the gas turbine combustor according to the third embodiment.
- symbol is attached
- the radial gap is smaller than the number of cooling passages 102 provided in the first regions ⁇ 1 and ⁇ 2 (see FIG. 1) where the radial gap S1 is wide.
- a large number of cooling passages 102 are set in the second regions ⁇ 3 and ⁇ 4 (see FIG. 1) where S2 is narrow.
- FIG. 13 is sectional drawing showing the modification of the connection part of the combustor inner cylinder and combustor tail cylinder in the gas turbine combustor of 3rd Embodiment.
- the cooling unit 111 extends along the radial direction of the combustor tail tube 43 to the cylindrical portion 61 and the shape transition unit 62 on the upstream side in the flow direction of the combustion gas G in the combustor tail tube 43, and A plurality of cooling passages 112 and 113 are provided penetrating at a predetermined interval in the circumferential direction of the cylinder 43.
- Each of the cooling passages 112 and 113 is arranged so as to be shifted in the flow direction of the combustion gas G, one end opens to the outer surface of the combustor tail cylinder 43, and the other end is the inner surface of the combustor tail cylinder 43. It opens facing the end 71 of the inner tube 42.
- the cooling units 101 and 111 that are cooled by the compressed air (cooling medium) are connected to the connection portion C between the combustor inner cylinder 42 and the combustor tail cylinder 43.
- the radial clearance S2 is narrower than the radial clearance S1 of the first regions ⁇ 1 and ⁇ 2 with respect to the flow rate of the compressed air by the first cooling unit that is provided and cools the first regions ⁇ 1 and ⁇ 2 having a wide radial clearance S1.
- a large amount of compressed air is set in the second cooling section for cooling the second regions ⁇ 3 and ⁇ 4.
- the end 71 of the combustor inner cylinder 42 can be appropriately cooled by the compressed air.
- reliability can be improved and a longer life can be achieved.
- FIG. 14 is a cross-sectional view illustrating a connection portion between a combustor inner cylinder and a combustor tail cylinder in the gas turbine combustor according to the fourth embodiment.
- symbol is attached
- the reference line L1 is a straight line that is perpendicular to the radial direction and the axial direction of the gas turbine and passes through the axial center O of the combustor inner cylinder 42.
- the outer region of the cooling portions 81 and 91 in the region outside the radial direction of the gas turbine and the inner side in the radial direction of the gas turbine relative to the reference line L1 with respect to the reference line L1
- the inner area of the cooling parts 81 and 91 in the area is set.
- connection angle (alpha) in the intersection (connection point D) of the extension line L along the axial direction of the outer surface of the combustor inner cylinder 42 and the inner surface of the combustor tail cylinder 43 is set. Further, the first region ⁇ 1, ⁇ 2 set at a position near the reference line L1 in either the outer region or the inner region and the first region ⁇ 1 set at a position farther from the reference line L1 than the first regions ⁇ 1, ⁇ 2. Second regions ⁇ 3 and ⁇ 4 having a larger connection angle ⁇ than the regions ⁇ 1 and ⁇ 2 are set.
- the flow rate of the compressed air (cooling medium) is set larger than that in the first regions ⁇ 1, ⁇ 2 (first cooling unit 81). This configuration is substantially the same as that of the first embodiment.
- first region ⁇ 1, ⁇ 2 set at a position near the reference line L1 in either the outer region or the inner region, and the first region ⁇ 1, ⁇ 2 set at a position farther from the reference line L1 than the first region ⁇ 1, ⁇ 2.
- the second regions ⁇ 3 and ⁇ 4 having a narrower radial gap S than the first regions ⁇ 1 and ⁇ 2 are set, and the second regions ⁇ 3 and ⁇ 4 have a flow rate of compressed air (cooling medium) in comparison with the first regions ⁇ 1 and ⁇ 2. Many are set. This configuration is substantially the same as that of the second embodiment.
- the outer region includes outer first regions ⁇ 11 and ⁇ 21 that constitute a part of the first regions ⁇ 1 and ⁇ 2, and an outer second region that constitutes a second region outside the first radial regions of the gas turbine from the outer first regions ⁇ 11 and ⁇ 21.
- the outer second area ⁇ 3 is set larger than the total area of the outer first areas ⁇ 11 and ⁇ 21.
- the inner region includes inner first regions ⁇ 12 and ⁇ 22 that constitute a part of the first regions ⁇ 1 and ⁇ 2, and the inner second region that constitutes the second region on the radially inner side of the gas turbine from the inner first regions ⁇ 12 and ⁇ 22.
- the inner second area ⁇ 4 is set smaller than the total area of the inner first areas ⁇ 12 and ⁇ 22.
- the outer second region ⁇ 3 is set larger than the inner second region ⁇ 4.
- the first region ⁇ 1, ⁇ 2 and the second region ⁇ 3, ⁇ 4 are set symmetrically with respect to the reference line L1 and the second reference line L2 perpendicular to the axial direction of the combustor inner cylinder 42, respectively.
- the number of cooling passages in the outer region is set larger than the number of cooling passages in the inner region. Further, the number of cooling passages in the first regions ⁇ 1 and ⁇ 2 is set to be smaller than the number of cooling passages in the second regions ⁇ 3 and ⁇ 4.
- the inner first regions ⁇ 12, ⁇ 22 and the inner second region ⁇ 4 are adjacent to each other in the circumferential direction of the combustor inner cylinder 42, and the boundary position between the inner first regions ⁇ 12, ⁇ 22 and the inner second region ⁇ 4 is 60 to 60 from the reference line L1. It is set in the range of degrees to 75 degrees.
- connection angle ⁇ at the position where the combustor inner cylinder 42 and the reference line L1 intersect is set to 0 degree, and the connection angle ⁇ at the position intersecting the second reference line L2 in the outer region is 12 degrees to 16 degrees.
- the connection angle ⁇ at the position intersecting the second reference line L2 in the inner region is set to 8 degrees to 12 degrees.
- the passages 82, 92, and 93 that penetrate along the flow direction of the combustion gas G within the thickness of the combustor inner cylinder 42, or the cooling portion 101. , 111 are passages 102, 112, 113 formed in the combustor tail cylinder 43, but are not limited to this configuration.
- the passage may be inclined with respect to the flow direction of the combustion gas G or may be along the circumferential direction of the combustor inner cylinder 42.
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Abstract
Description
図6は、第1実施形態のガスタービンを表す概略構成図、図7は、ガスタービン燃焼器を表す概略図、図8は、燃焼器尾筒を表す斜視図である。
図9は、第2実施形態のガスタービン燃焼器における燃焼器内筒と燃焼器尾筒の接続部を表す断面図、図10は、燃焼器内筒と燃焼器尾筒の接続部を表す図9のX-X断面図、図11は、燃焼器内筒と燃焼器尾筒の接続部を表す図9のXI-XI断面図である。なお、上述した第1実施形態と同様の機能を有する部材には、同一の符号を付して詳細な説明は省略する。
図12は、第3実施形態のガスタービン燃焼器における燃焼器内筒と燃焼器尾筒の接続部を表す断面図である。なお、上述した実施形態と同様の機能を有する部材には、同一の符号を付して詳細な説明は省略する。
図14は、第4実施形態のガスタービン燃焼器における燃焼器内筒と燃焼器尾筒の接続部を表す断面図である。なお、上述した実施形態と同様の機能を有する部材には、同一の符号を付して詳細な説明は省略する。
11 圧縮機
12 燃焼器
13 タービン
41 燃焼器外筒
42 燃焼器内筒(燃焼用筒)
43 燃焼器尾筒(トランジションピース)
61 円筒部
64a,64b 第1辺
65a,65b 第2辺
66 スプリングクリップ
67 バギークリップ
71 端部
81 第1冷却部
82 第1冷却通路
83 第1冷却孔
91 第2冷却部
92 第1通路(第2冷却通路)
93 第2通路(第2冷却通路)
94 合流部(第2冷却通路)
95 第2冷却孔
101,111 冷却部
102,112,113 冷却通路
D 接続点(交点)
L 延長線
L1 基準線
L2 第2基準線
S,S1,S2 径方向隙間
α,α1,α2 接続角度
θ1,θ2 第1領域
θ3 外側第2領域(第2領域)
θ4 内側第2領域(第2領域)
θ11,θ21 外側第1領域
θ12,θ22 内側第1領域
Claims (21)
- 内部で圧縮空気と燃料が混合されて燃焼し、
燃焼ガスの流動方向の下流側の端部が周方向に沿う径方向隙間を介してトランジションピースに挿入されて接続され、
前記トランジションピースとの接続部に設けられる冷却部の冷却媒体により冷却するガスタービンの燃焼用筒において、
前記ガスタービンの径方向及び軸方向に垂直な直線で、且つ、前記燃焼用筒の中心を通る基準線に対し、前記基準線よりも前記ガスタービンの径方向の外側の領域にある前記冷却部の外側領域と、
前記基準線に対して前記基準線よりも前記ガスタービンの径方向の内側の領域にある前記冷却部の内側領域と、が設定され、
前記燃焼用筒の外面の軸方向に沿う延長線と前記トランジションピースの内面との交点における接続角度が設定され、
前記外側領域または前記内側領域のいずれかの領域における前記基準線寄りの位置に設定される第1領域と、前記第1領域よりも前記基準線から遠い位置に設定されて前記第1領域よりも前記接続角度が大きい第2領域と、が設定され、
前記第2領域は、前記第1領域よりも冷却媒体の流通量が多く設定される、
ことを特徴とする燃焼用筒。 - 前記冷却部は、前記第1領域における冷却媒体の流通量に対して、前記第1領域より前記径方向隙間が狭い前記第2領域における前記冷却媒体の流通量が多く設定されることを特徴とする請求項1に記載の燃焼用筒。
- 内部で圧縮空気と燃料が混合されて燃焼し、
燃焼ガスの流動方向の下流側の端部が周方向に沿う径方向隙間を介してトランジションピースに挿入されて接続され、
前記トランジションピースとの接続部に設けられる冷却部の冷却媒体により冷却するガスタービンの燃焼用筒において、
前記ガスタービンの径方向及び軸方向に垂直な直線で、且つ、前記燃焼用筒の中心を通る基準線に対して前記基準線よりも前記ガスタービンの径方向の外側の領域にある前記冷却部の外側領域と、
前記基準線に対し、前記基準線よりも前記ガスタービンの径方向の内側の領域にある前記冷却部の内側領域と、が設定され、
前記外側領域または前記内側領域のいずれかの領域における前記基準線寄りの位置に設定される第1領域と、前記第1領域よりも前記基準線から遠い位置に設定されて前記第1領域よりも前記径方向隙間が狭い第2領域と、が設定され、
前記第2領域は、前記第1領域よりも冷却媒体の流通量が多く設定される、
ことを特徴とする燃焼用筒。 - 前記接続部は、前記燃焼用筒における軸方向の端部と前記トランジションピースにおける軸方向の端部が径方向に重なることで構成され、前記冷却部は、前記燃焼用筒における軸方向の端部または前記トランジションピースにおける軸方向の端部に設けられることを特徴とする請求項1から請求項3のいずれか一項に記載の燃焼用筒。
- 前記冷却部は、前記燃焼用筒における燃焼ガスの流動方向の下流側の端部に、燃焼ガスの流動方向に沿うと共に周方向に所定間隔を空けて設けられる複数の冷却通路を有し、前記第1領域における前記複数の冷却通路の平均間隔に対して、前記第2領域における前記複数の冷却通路の平均間隔が小さく設定されることを特徴とする請求項4に記載の燃焼用筒。
- 前記複数の冷却通路は、一端部が前記径方向隙間に開口し、他端部が前記燃焼用筒における燃焼ガスの流動方向の下流側の端面に開口することを特徴とする請求項5に記載の燃焼用筒。
- 前記第2領域に設けられる前記複数の冷却通路は、一端部が前記径方向隙間に開口する第1通路と、一端部が前記燃焼用筒の前記端面に開口する前記第1通路より数が多い第2通路と、前記第1通路の他端部と前記第2通路の他端部とが連通する合流部とを有することを特徴とする請求項6に記載の燃焼用筒。
- 前記トランジションピースは、燃焼ガスの流動方向の上流側が円筒形状をなし、燃焼ガスの流動方向の下流側がガスタービンの径方向に沿う第1辺の長さに対して前記ガスタービンの周方向に沿う第2辺の長さが長い矩形筒形状をなし、前記第1領域は、第1辺側に設けられ、前記第2領域は、第2辺側に設けられることを特徴とする請求項1から請求項7のいずれか一項に記載の燃焼用筒。
- 前記冷却部は、前記燃焼用筒における燃焼ガスの流動方向の下流側の端部に、燃焼ガスの流動方向に沿うと共に周方向に所定間隔を空けて設けられる複数の冷却通路を有し、周方向における単位長さ当りの前記冷却通路の断面積は、前記第1領域より前記第2領域が大きく設定されることを特徴とする請求項4に記載の燃焼用筒。
- 前記外側領域は、前記第1領域を構成する外側第1領域と、前記外側第1領域より前記ガスタービンの径方向の外側で前記第2領域を構成する外側第2領域とに設定され、前記外側第1領域より前記外側第2領域が大きく設定されることを特徴とする請求項1から請求項9のいずれか一項に記載の燃焼用筒。
- 前記内側領域は、前記第1領域を構成する内側第1領域と、前記内側第1領域より前記ガスタービンの径方向の内側で前記第2領域を構成する内側第2領域とに設定され、前記内側第1領域より前記内側第2領域が小さく設定されることを特徴とする請求項1から請求項10のいずれか一項に記載の燃焼用筒。
- 前記外側領域は、前記第1領域を構成する外側第1領域と、前記外側第1領域より前記ガスタービンの径方向の外側で前記第2領域を構成する外側第2領域とに設定され、前記外側第1領域より前記外側第2領域が大きく設定されると共に、前記内側領域は、前記第1領域を構成する内側第1領域と、前記内側第1領域より前記ガスタービンの径方向の内側で前記第2領域を構成する内側第2領域とに設定され、前記内側第2領域より前記外側第2領域が大きく設定されることを特徴とする請求項1から請求項9のいずれか一項に記載の燃焼用筒。
- 前記第1領域及び前記第2領域は、それぞれ前記基準線及び燃焼用筒の軸方向に垂直な第2基準線に対して線対称に設定されることを特徴とする請求項1から請求項12のいずれか一項に記載の燃焼用筒。
- 前記冷却部は、前記燃焼用筒における燃焼ガスの流動方向の下流側の端部に、燃焼ガスの流動方向に沿うと共に周方向に所定間隔を空けて設けられる複数の冷却通路を有し、前記外側領域における前記冷却通路の数は、前記内側領域における前記冷却通路の数より多く設定されることを特徴とする請求項4に記載の燃焼用筒。
- 前記冷却部は、前記燃焼用筒における燃焼ガスの流動方向の下流側の端部に、燃焼ガスの流動方向に沿うと共に周方向に所定間隔を空けて設けられる複数の冷却通路を有し、前記第1領域における前記冷却通路の数は、前記第2領域における前記冷却通路の数より少なく設定されることを特徴とする請求項4に記載の燃焼用筒。
- 前記複数の冷却通路における平均間隔は、前記第1領域で5.5mm~8.5mmに設定され、前記第2領域で2.0mm~5.0mmに設定されることを特徴とする請求項5から請求項7のいずれか一項に記載の燃焼用筒。
- 前記外側第1領域と前記外側第2領域は、前記燃焼用筒の周方向に隣接し、前記外側第1領域と前記外側第2領域の境界位置は、前記基準線から15度~30度の範囲に設定されることを特徴とする請求項10または請求項12に記載の燃焼用筒。
- 前記内側第1領域と前記内側第2領域は、前記燃焼用筒の周方向に隣接し、前記内側第1領域と前記内側第2領域の境界位置は、前記基準線から60度~75度の範囲に設定されることを特徴とする請求項11または請求項12に記載の燃焼用筒。
- 前記燃焼用筒と前記基準線とが交差する位置における接続角度が0度に設定され、前記外側領域のうちの前記第2基準線と交差する位置における接続角度が12度~16度に設定され、前記内側領域のうちの前記第2基準線と交差する位置における接続角度が8度~12度に設定されることを特徴とする請求項13に記載の燃焼用筒。
- 内部で圧縮空気と燃料が混合されて燃焼する請求項1から請求項19のいずれか一項に記載の燃焼用筒と、
前記燃焼用筒における燃焼ガスの流動方向の下流側の端部が周方向に沿う径方向隙間を介して挿入されて接続されるトランジションピースと、
を備えることを特徴とするガスタービン燃焼器。 - 空気を圧縮する圧縮機と、
前記圧縮機が圧縮した圧縮空気と燃料を混合して燃焼する燃焼器と、
前記燃焼器が生成した燃焼ガスにより回転動力を得るタービンと、
を備え、
前記燃焼器として請求項20に記載のガスタービン燃焼器が用いられる、
ことを特徴とするガスタービン。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
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| JP2017548738A JP6564872B2 (ja) | 2015-11-05 | 2016-10-28 | 燃焼用筒、ガスタービン燃焼器及びガスタービン |
| CN201680062873.2A CN108350809B (zh) | 2015-11-05 | 2016-10-28 | 燃烧用筒、燃气轮机燃烧器以及燃气轮机 |
| DE112016005084.4T DE112016005084B4 (de) | 2015-11-05 | 2016-10-28 | Verbrennungszylinder, Gasturbinenbrennkammer und Gasturbine |
| US15/769,193 US10961910B2 (en) | 2015-11-05 | 2016-10-28 | Combustion cylinder, gas turbine combustor, and gas turbine |
| KR1020187012730A KR102075901B1 (ko) | 2015-11-05 | 2016-10-28 | 연소용 통, 가스 터빈 연소기 및 가스 터빈 |
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| US (1) | US10961910B2 (ja) |
| JP (1) | JP6564872B2 (ja) |
| KR (1) | KR102075901B1 (ja) |
| CN (1) | CN108350809B (ja) |
| DE (1) | DE112016005084B4 (ja) |
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| US11746663B2 (en) | 2019-03-29 | 2023-09-05 | Mitsubishi Power, Ltd. | High-temperature component and method of producing the high-temperature component |
| WO2025229806A1 (ja) * | 2024-04-30 | 2025-11-06 | 三菱パワー株式会社 | 燃焼器、及びこれを備えるガスタービン |
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| JP6843513B2 (ja) * | 2016-03-29 | 2021-03-17 | 三菱パワー株式会社 | 燃焼器、燃焼器の性能向上方法 |
| JP7234006B2 (ja) * | 2019-03-29 | 2023-03-07 | 三菱重工業株式会社 | 高温部品及び高温部品の製造方法 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108350809B (zh) | 2020-06-12 |
| KR102075901B1 (ko) | 2020-02-11 |
| KR20180064481A (ko) | 2018-06-14 |
| JP6564872B2 (ja) | 2019-08-21 |
| JPWO2017077955A1 (ja) | 2018-07-26 |
| US20180320595A1 (en) | 2018-11-08 |
| US10961910B2 (en) | 2021-03-30 |
| CN108350809A (zh) | 2018-07-31 |
| TW201730427A (zh) | 2017-09-01 |
| TWI654367B (zh) | 2019-03-21 |
| DE112016005084T5 (de) | 2018-07-26 |
| DE112016005084B4 (de) | 2022-09-22 |
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