KR101857280B1 - Gas turbine provided with a device for improved fuel flow distribution. - Google Patents

Gas turbine provided with a device for improved fuel flow distribution. Download PDF

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Publication number
KR101857280B1
KR101857280B1 KR1020150093189A KR20150093189A KR101857280B1 KR 101857280 B1 KR101857280 B1 KR 101857280B1 KR 1020150093189 A KR1020150093189 A KR 1020150093189A KR 20150093189 A KR20150093189 A KR 20150093189A KR 101857280 B1 KR101857280 B1 KR 101857280B1
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KR
South Korea
Prior art keywords
fuel supply
supply nozzle
support portion
gap
vane
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KR1020150093189A
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Korean (ko)
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KR20170003053A (en
Inventor
김영봉
노우진
김성현
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두산중공업 주식회사
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Priority to KR1020150093189A priority Critical patent/KR101857280B1/en
Publication of KR20170003053A publication Critical patent/KR20170003053A/en
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Publication of KR101857280B1 publication Critical patent/KR101857280B1/en

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    • 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
    • F23R3/10—Air inlet arrangements for primary air
    • F23R3/12—Air inlet arrangements for primary air inducing a vortex
    • F23R3/14—Air inlet arrangements for primary air inducing a vortex by using swirl vanes
    • 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
    • F02C7/22—Fuel supply systems
    • 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
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a fuel supply apparatus, a fuel supply apparatus, And to provide an apparatus for an improved fuel flow distribution located at the tip of the fuel supply nozzle.
Through the above structure, it is possible to efficiently distribute the mixture of fuel and air. As a result, it is possible to obtain the result that the recirculation zone of the combustion is weakened and the fuel nozzle tip area is protected from heat by arranging the zone where the combustion takes place rather than concentrating on one part, .

Description

A gas turbine power generator with an apparatus for improved fuel flow distribution. {Gas turbines are provided with improved fuel flow distribution.}

The present invention relates to a gas turbine power generator equipped with an apparatus for improved fuel flow distribution, and more particularly, to a fuel turbine generator having a plurality of fuel supply nozzles provided at a downstream end of a combustor of a gas turbine, By providing an improved vane for improved fuel flow distribution at the tip of the fuel supply nozzle, it is possible to reduce the recirculation zone of the combustion and thereby provide an improved fuel flow distribution that can protect the tip portion of the fuel supply nozzle from heat And more particularly, to a gas turbine generator equipped with an apparatus for controlling a gas turbine.

Turbine generators, commonly used in gas turbine power generation, operate on the principle of burning fuel through compressed air to generate powerful energy and using it to operate the turbine.

Specifically, the high-pressure air compressed through the compressor provided inside the gas turbine rides on the outer surface of the combustor and enters the fuel supply nozzle.

The high-pressure air drawn into the fuel supply nozzle is mixed with the fuel through the fuel injection port provided in the tip portion and the body of the fuel supply nozzle, and is injected at a high pressure.

In this case, the injected mixture has a uniform flow distribution inside the combustor, and therefore, it is necessary to inject only the recirculation zone of the combustion, so that the tip portion of the fuel supply nozzle can be protected from heat.

When the application area of the recirculation zone of the combustion is wide, flame backfire may occur and the tip of the fuel nozzle may melt due to heat.

Accordingly, it is desirable to provide a device for improved fuel flow distribution in the gap between the tip of the fuel supply nozzle and the fuel supply nozzle case, so that an improved configuration of the fuel flow distribution Is required.

European Registered Patent EP 0902237 A3

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a fuel supply apparatus, a fuel supply apparatus, And to provide an apparatus for an improved fuel flow distribution located at the tip of the fuel supply nozzle.

According to an aspect of the present invention, there is provided a fuel supply system including a plurality of fuel supply nozzles including a leading end portion located at a front end side and a binding portion located at a rear end side, A plurality of fuel supply nozzles formed in a gap between the plurality of fuel supply nozzles and the fuel supply nozzle case and having a predetermined gap therebetween, A fuel supply nozzle unit may be provided.

The vane may include a main ring forming a flow and a plurality of fixing portions connecting the inner ring of the fuel supply nozzle case and the main ring, Shape.

In addition, the vane can be provided in the gap above the tip of the fuel supply nozzle.

In addition, the vane may include a main ring forming a flow, a plurality of fixing portions connecting the inner surface of the fuel supply nozzle case and the main ring, wherein the longitudinal centerline of the main ring in the axial direction of the fuel supply nozzle is a straight line It is possible.

In this case, it is preferable that an annular flow control tip having a slope at a predetermined angle toward the fuel supply nozzle is provided at an end of the main ring at the tip end.

For more efficient flow distribution control, it is possible that the surface of the flow conditioning tip is provided with pores.

The vane may include a first support portion and a second support portion each having a donut shape extending from the fuel supply nozzle case and an annular connection portion provided between the first support portion and the second support portion, Is located closer to the tip end side relative to the second support portion.

In addition, the connection portion may be provided such that the fuel supply nozzle has a vertical longitudinal section in a central axis direction and is spaced apart from the fuel supply nozzle by a predetermined distance, the first support portion having a donut shape has a constant inclination, It is possible to have a shape inclined in the direction of the binding portion.

It is preferable that the annular connection portion is provided in a multi-stage structure having different diameters, and one end of the multi-stage structure of the connection portion having a wide diameter is provided close to the tip end portion.

Wherein the vane includes an annular main ring having a thin plate shape and in contact with an outer surface of the fuel supply nozzle and a plurality of flow forming portions provided between the main ring and the inner surface of the fuel supply nozzle case, The upper portion of the flow forming portion contacting the inner side of the fuel supply nozzle case is longer than the lower portion of the flow forming portion contacting the outer side of the fuel supply nozzle and the tip portion side end of the flow forming portion is curved in the longitudinal direction.

The gas turbine power generation apparatus having an apparatus for improved fuel flow distribution according to the present invention as described above is characterized in that it comprises a fuel supply nozzle for supplying fuel to the fuel supply nozzle, By providing a device, efficient flow distribution of fuel and air mixture is possible. As a result, it is possible to obtain the result that the recirculation zone of the combustion is weakened and the fuel nozzle tip area is protected from heat by arranging the zone where the combustion takes place rather than concentrating on one part, .

Fig. 1 is a perspective view of a fuel supply nozzle provided with a leading end portion and a coupling portion according to an embodiment of the present invention.
2 is a perspective view of a fuel supply nozzle case including a plurality of nozzle holes provided at a rear end of an embodiment of the present invention.
Fig. 3 is a side cross-sectional view of a fuel supply nozzle unit including a vane having an airfoil section provided on a leading end side of an embodiment of the present invention. Fig.
Fig. 4 is a front view of a fuel supply nozzle unit including a vane having an airfoil section provided at a leading end side of an embodiment of the present invention. Fig.
5 is a side cross-sectional view of a fuel supply nozzle unit including a vane having a straight section provided on a leading end side of an embodiment of the present invention.
6 is a side cross-sectional view of a fuel supply nozzle unit including a vane and a flow control tip having a straight section provided on a leading end side of an embodiment of the present invention.
Fig. 7 is a front view of a fuel supply nozzle unit including a vane and a flow control tip having a straight section provided on a leading end side of an embodiment of the present invention; Fig.
Fig. 8 is a side cross-sectional view of a fuel supply nozzle unit including a vane having an inclined surface provided on a leading end side of an embodiment of the present invention. Fig.
Fig. 9 is a front view of a fuel supply nozzle unit including a vane having an inclined surface provided on a leading end side of an embodiment of the present invention. Fig.
10 is a side cross-sectional view of a fuel supply nozzle unit including a first support portion, a second support portion and a connection portion according to an embodiment of the present invention.
11 is a front view of a fuel supply nozzle unit including a first support portion, a second support portion and a connection portion according to an embodiment of the present invention.
12 is a side cross-sectional view of a fuel supply nozzle unit provided with a main ring and a plurality of flow forming portions according to an embodiment of the present invention.
13 is a front view of a fuel supply nozzle unit provided with a main ring and a plurality of flow forming portions according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected,""coupled," or "connected. &Quot;

A plurality of fuel supply nozzles 2 including a leading end portion 20 located at the front end side and a binding portion 21 located at the rear end side, a plurality of fuel supply nozzles 2, A gap 4 having a predetermined gap is formed between the fuel supply nozzle case 3 provided with the nozzle hole 30 and the plurality of fuel supply nozzles 2 and the fuel supply nozzle case 3, A fuel supply nozzle unit 1 including a ring-shaped vane 5 provided in each clearance 4 may be provided.

1 and 2 show a fuel supply nozzle case 3 in which the fuel supply nozzle 2 and the fuel supply nozzle 2 can be inserted and fixed.

1 shows one of the plurality of fuel supply nozzles 2 provided with the leading end portion 20 and the binding portion 21 and the fuel is supplied from the fuel storage portion to the binding portion 2 of the fuel supply nozzle 2. [ (21), and can be injected into the front end provided with the tip end (20).

2 shows a fuel supply nozzle case 3 having a plurality of nozzle holes 30 into which the plurality of fuel supply nozzles 2 can be inserted, (20) to the nozzle hole (30) provided in the fuel supply nozzle case (3).

As the fuel supply nozzle 2 is inserted, the coupling part 21, which is made larger than the nozzle hole 30, is combined with the nozzle hole 30 and can perform sealing.

The vane 5 includes a main ring 50 forming a flow and a plurality of fixing portions 51 connecting the inner surface of the fuel supply nozzle case 3 and the main ring 50, It is possible to provide the fuel supply nozzle unit 1 characterized in that the vertical cross-section of the ring 50 in the axial direction of the fuel supply nozzle is an airfoil shape.

3 is a side cross-sectional view of the fuel supply nozzle unit 1 including a vane 5 having an airfoil section provided on the side of the leading end portion 20 which shows one embodiment of the present invention.

4 is a front view of the fuel supply nozzle unit 1 including a vane 5 having an airfoil section provided on the side of the leading end portion 20 which is an embodiment of the present invention.

3 and 4, the fuel supply nozzle 2 is inserted into the fuel supply nozzle case 3 as described above, and the fuel supply nozzle 2 is positioned at a position close to the tip end 20 of the fuel supply nozzle 2 The main ring 50 and the plurality of fixing portions 51 may be provided.

The main ring 50 has an airfoil section in the form of an airfoil which has a thicker airfoil configuration in the direction of the binding section 21 and a thinner airfoil configuration in the direction of the tip 20 .

The main ring 50 having the above-described cross-section in the airfoil shape can guide the flow around the main ring 50 to below the airfoil shape.

Therefore, the main ring 50 provided in an annular shape around the fuel supply nozzle 2 can guide the flow of the mixture of fuel and air more toward the center axis of the fuel supply nozzle 2.

The vane 5 may be provided in a gap 4 above the tip portion 20 of the fuel supply nozzle 2 and the vane 5 may include a main ring 50 forming a flow, And a plurality of fixing portions (51) connecting the inner surface of the fuel supply nozzle case (3) and the main ring (50), wherein the vertical cross section of the main ring (50) .

In addition, it is preferable that an annular flow control tip 52 having an inclination of a predetermined angle toward the fuel supply nozzle 2 is provided at an end of the main ring 50 on the tip end side.

5 is a side cross-sectional view of a fuel supply nozzle unit 1 including a vane 5 having a straight section, which is provided on the side of the leading end 20, which is an embodiment of the present invention.

6 is a side cross-sectional view of a fuel supply nozzle unit 1 including a vane 5 and a flow regulating tip 52 having a straight section provided on the side of the leading end portion 20 showing one embodiment of the present invention.

7 is a front view of a fuel supply nozzle unit 1 including a vane 5 and a flow regulating tip 52 having a straight section provided on the side of the leading end 20 showing one embodiment of the present invention.

5 to 7, it can be confirmed that the cross section of the main ring 50 is a straight line, unlike in FIGS. 3 and 4. FIG. The shape of the main ring 50 is also configurable, but it may be located in the direction of the tip 20 of the main ring 50 to collect more flow of the flow in the direction of the center axis of the fuel supply nozzle 2 And an annular flow regulating tip 52 having an inclination of a certain angle toward the fuel supply nozzle 2 is preferably provided at the end thereof.

In addition, it is possible to provide the pores 520 on the surface of the flow regulating tip 52, and the presence of the pores 520 causes the mixture flow to be excessively pushed toward the center axis of the fuel supply nozzle 2 .

The angle of the flow regulating tip 52 or the size and arrangement of the pores 520 are not limited to those described above.

The vane 5 includes a first support portion 53 and a second support portion 54 extending from the fuel supply nozzle case 3 in a toroidal shape and extending from the fuel supply nozzle case 3 and the first and second support portions 53, Characterized in that the first support portion (53) is located closer to the tip portion (20) side relative to the second support portion (54) than the second support portion (54) It is possible that the nozzle unit 1 is provided.

Fig. 8 is a side cross-sectional view of a fuel supply nozzle unit including a vane having an inclined surface provided on a leading end side of an embodiment of the present invention. Fig.

Fig. 9 is a front view of a fuel supply nozzle unit including a vane having an inclined surface provided on a leading end side of an embodiment of the present invention. Fig.

8 to 9, unlike the above-described Figs. 3 to 7, the present embodiment is not constituted by the plurality of fixing portions 51 and the main ring 50,

There is provided a first support portion 53 and a second support portion 54 having a donut shape in which the flow does not pass and a transversely annular connection portion 55 is provided between the support portions. A mixture of fuel and air can only pass through the gap (4) between the connecting portion (55) and the fuel supply nozzle (2).

In addition to the above configuration, the connecting portion 55 is provided such that the fuel supply nozzle 2 has a straight longitudinal section in the central axial direction and is maintained at a constant distance from the fuel supply nozzle 2, 1 support portion 53 may have a constant inclination and the fuel supply nozzle side end portion may be inclined in the direction of the coupling portion 21. [

Due to the shape of the first support portion 53, which is not vertically orthogonally arranged at a predetermined angle, the mixture which has passed through the gap 4 between the connection portion 55 and the fuel supply nozzle 2, And more uniform and constant distribution can be achieved.

In addition, the annular connecting portion 55 is provided in a multi-stage structure having different diameters, and one end of the multi-step structure of the connecting portion 55 having a wide diameter is provided close to the tip portion 20 It is possible to provide the fuel supply nozzle unit 1 as shown in Fig.

10 is a side cross-sectional view of a fuel supply nozzle unit 1 including a first support portion 53, a second support portion 54, and a connection portion 55 showing one embodiment of the present invention.

11 is a front view of a fuel supply nozzle unit 1 including a first support portion 53, a second support portion 54, and a connection portion 55 showing one embodiment of the present invention.

Referring to Figs. 10 to 11, the multi-step structure having the above-described structure is similar to the shape of the inclined first support portion 53 shown in Fig. 8.

10, the mixture passing through the gap a between the fuel supply nozzle 2 and the fuel supply nozzle case 3, due to the multi-step structure having the configuration of b having a height difference from a shown in FIG. 10, When passing through the gap (b) between the fuel supply nozzle (2) and the fuel supply nozzle case (3), the fuel can be injected with a more uniform and uniform distribution into the combustor.

12 is a side sectional view of a fuel supply nozzle unit 1 provided with a main ring 50 and a plurality of flow forming portions 56 showing one embodiment of the present invention.

13 is a front view of a fuel supply nozzle unit 1 provided with a main ring 50 and a plurality of flow forming portions 56 showing one embodiment of the present invention.

In addition, the vane 5 has an annular main ring 50 having a thin plate shape and in contact with the outer surface of the fuel supply nozzle 2, and an annular main ring 50 which is in contact with the main ring 50 and the fuel supply nozzle case 3 Wherein an upper portion of the flow forming portion (56) contacting the inner side surface of the fuel supply nozzle case (3) of the flow forming portion (56) is connected to the fuel supply nozzle The length of the flow forming part 56 is longer than the lower part of the flow forming part 56 contacting the outside of the flow forming part 56 and the end part of the flow forming part 56 is curved in the vertical direction.

The end portions of the plurality of flow forming portions 56 on the side of the tip portion 20 are formed in a curved shape in longitudinal section so that the length of the side of the fuel supply nozzle case 3 is longer than the length of the side of the fuel supply nozzle 2 So that the flow of the mixture passing through the gap (4) between the fuel supply nozzle case (3) and the fuel supply nozzle (2) is further directed in the direction of the central axis of the fuel supply nozzle (2) Lt; / RTI >

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: Fuel supply nozzle unit
2: Fuel supply nozzle
3: Fuel supply nozzle case
4: Clearance
5: Vane
20:
21:
30: nozzle hole
50: Main ring
51:
52: Flow adjustment tips
53: first support portion
54: second support portion
55: Connection
56:
520: Porous

Claims (20)

A plurality of fuel supply nozzles (2) including a leading end (20) located on the front end side and a binding portion (21) located on the rear end side;
A fuel supply nozzle case 3 provided with a plurality of nozzle holes 30 through which the plurality of fuel supply nozzles 2 can be inserted and installed, respectively; And
A gap 4 having a predetermined gap is formed between the plurality of fuel supply nozzles 2 and the nozzle hole 30 and a ring shaped vane 5 provided at each gap 4 formed, ≪ / RTI >
The vane 5 includes a main ring 50 forming a flow and a plurality of fixing portions 51 connecting the inner surface of the fuel supply nozzle case 3 and the main ring 50, The longitudinal direction of the ring 50 in the central axis direction of the fuel supply nozzle is in the form of an airfoil and the shape of the airfoil is thick in the direction of the coupling part 21 and thin in the direction of the tip 20, ) To the fuel supply nozzle (2) side,
Characterized in that the vane (5) is provided in a gap (4) above the tip (20) of the fuel supply nozzle (2).
A plurality of fuel supply nozzles (2) including a leading end (20) located on the front end side and a binding portion (21) located on the rear end side;
A fuel supply nozzle case 3 provided with a plurality of nozzle holes 30 through which the plurality of fuel supply nozzles 2 can be inserted and installed, respectively; And
A gap 4 having a predetermined gap is formed between the plurality of fuel supply nozzles 2 and the nozzle hole 30 and a ring shaped vane 5 provided at each gap 4 formed, ≪ / RTI >
The vane 5 includes a first support portion 53 and a second support portion 54 extending from the fuel supply nozzle case 3 in a donut shape and extending from the first support portion 53 and the second support portion 54 And an annular connecting portion 55 provided between the outer circumferential portion and the outer circumferential portion,
Wherein the first support portion (53) is located closer to the tip portion (20) side than the second support portion (54).
3. The method of claim 2,
The connecting portion 55 is provided so as to maintain a constant interval from the fuel supply nozzle 2, with the vertical cross-section in the direction of the center axis of the fuel supply nozzle forming a straight line,
The fuel supply nozzle unit (1) according to any one of claims 1 to 3, wherein the donut-shaped first support portion (53) has a constant inclination and the fuel supply nozzle side end portion is inclined toward the binding portion (21).
3. The method of claim 2,
The annular connecting portion 55 is provided in a multi-stage structure having a different diameter, and one end of the multi-step structure of the connecting portion 55 having a large diameter is provided in the vicinity of the tip portion 20 side. Feed nozzle unit (1).
A combustor for generating a high-temperature, high-pressure combustion gas by injecting fuel against compressed air supplied from a compressor and combusting the compressed air,
The combustor
A plurality of fuel supply nozzles (2) including a leading end (20) located on the front end side and a binding portion (21) located on the rear end side;
A fuel supply nozzle case 3 provided with a plurality of nozzle holes 30 through which the plurality of fuel supply nozzles 2 can be inserted and installed, respectively; And
A gap 4 having a predetermined gap is formed between the plurality of fuel supply nozzles 2 and the nozzle hole 30 and a ring shaped vane 5 provided at each gap 4 formed, ≪ / RTI >
The vane 5 includes a main ring 50 forming a flow and a plurality of fixing portions 51 connecting the inner surface of the fuel supply nozzle case 3 and the main ring 50, The longitudinal direction of the ring 50 in the central axis direction of the fuel supply nozzle is in the form of an airfoil and the shape of the airfoil is thick in the direction of the coupling part 21 and thin in the direction of the tip 20, ) To the fuel supply nozzle (2) side,
Characterized in that the vane (5) is provided in a gap (4) above the tip (20) of the fuel supply nozzle (2).
A combustor for generating a high-temperature, high-pressure combustion gas by injecting fuel against compressed air supplied from a compressor and combusting the compressed air,
The combustor
A plurality of fuel supply nozzles (2) including a leading end (20) located on the front end side and a binding portion (21) located on the rear end side;
A fuel supply nozzle case 3 provided with a plurality of nozzle holes 30 through which the plurality of fuel supply nozzles 2 can be inserted and installed, respectively; And
A gap 4 having a predetermined gap is formed between the plurality of fuel supply nozzles 2 and the nozzle hole 30 and a ring shaped vane 5 provided at each gap 4 formed, ≪ / RTI >
The vane 5 includes a first support portion 53 and a second support portion 54 extending from the fuel supply nozzle case 3 in a donut shape and extending from the first support portion 53 and the second support portion 54 And an annular connecting portion 55 provided between the outer circumferential portion and the outer circumferential portion,
Wherein the first support portion (53) is located closer to the tip portion (20) side than the second support portion (54).
The method according to claim 6,
The connecting portion 55 is provided so as to maintain a constant interval from the fuel supply nozzle 2, with the vertical cross-section in the direction of the center axis of the fuel supply nozzle forming a straight line,
Wherein the donut-shaped first support portion (53) has a constant inclination, and the end portion of the donut-shaped first support portion (53) is inclined toward the binding portion (21).
The method according to claim 6,
The annular connecting portion 55 is provided in a multi-stage structure with different diameters, and one end of the multi-step structure of the connecting portion 55 having a wide diameter is provided close to the tip portion 20 side. .
delete A combustor for generating a high-temperature, high-pressure combustion gas by injecting fuel to the compressed air supplied from the compressor and burning the compressed air; And a turbine for discharging the combustion gas after producing the gas turbine,
The combustor
A plurality of fuel supply nozzles (2) including a leading end (20) located on the front end side and a binding portion (21) located on the rear end side;
A fuel supply nozzle case 3 provided with a plurality of nozzle holes 30 through which the plurality of fuel supply nozzles 2 can be inserted and installed, respectively; And
A gap 4 having a predetermined gap is formed between the plurality of fuel supply nozzles 2 and the nozzle hole 30 and a ring shaped vane 5 provided at each gap 4 formed, ≪ / RTI >
The vane 5 includes a first support portion 53 and a second support portion 54 extending from the fuel supply nozzle case 3 in a donut shape and extending from the first support portion 53 and the second support portion 54 And an annular connecting portion 55 provided between the outer circumferential portion and the outer circumferential portion,
Wherein the first support portion (53) is located closer to the tip portion (20) side than the second support portion (54).
11. The method of claim 10,
The connecting portion 55 is provided so as to maintain a constant interval from the fuel supply nozzle 2, with the vertical cross-section in the direction of the center axis of the fuel supply nozzle forming a straight line,
Wherein the donut-shaped first support portion (53) has a constant inclination, and the fuel supply nozzle side end portion has a shape inclined toward the coupling portion (21).
11. The method of claim 10,
The annular connecting portion 55 is provided in a multi-stage structure with different diameters, and one end of the multi-step structure of the connecting portion 55 having a large diameter is provided close to the tip portion 20 side. turbine.

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KR1020150093189A 2015-06-30 2015-06-30 Gas turbine provided with a device for improved fuel flow distribution. KR101857280B1 (en)

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KR101857280B1 true KR101857280B1 (en) 2018-05-11

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