KR101885414B1 - Gas turbine combustion machine supporting units - Google Patents

Gas turbine combustion machine supporting units Download PDF

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Publication number
KR101885414B1
KR101885414B1 KR1020150108923A KR20150108923A KR101885414B1 KR 101885414 B1 KR101885414 B1 KR 101885414B1 KR 1020150108923 A KR1020150108923 A KR 1020150108923A KR 20150108923 A KR20150108923 A KR 20150108923A KR 101885414 B1 KR101885414 B1 KR 101885414B1
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KR
South Korea
Prior art keywords
contact
support member
fixed
gas turbine
protrusions
Prior art date
Application number
KR1020150108923A
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Korean (ko)
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KR20170014901A (en
Inventor
곽주환
Original Assignee
두산중공업 주식회사
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Priority to KR1020150108923A priority Critical patent/KR101885414B1/en
Publication of KR20170014901A publication Critical patent/KR20170014901A/en
Application granted granted Critical
Publication of KR101885414B1 publication Critical patent/KR101885414B1/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
    • F23R3/42—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
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/04—Supports for linings
    • 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
    • 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
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05003—Details of manufacturing specially adapted for combustion chambers

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  • 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

A support unit of a can for a gas turbine combustor is disclosed. A support unit of a can for a gas turbine combustor according to an embodiment of the present invention includes a first contact portion which is positioned between an inner can and an outer can of a gas turbine combustor and is fixed in a state of being in contact with the inner can at one end, And a support member having a first contact portion extending from the contact portion to an inner side of the outer can and having an end fixed to the inner side of the outer can in contact with the inner contact, Wherein a thickness of a portion fixed to an outer side of the inner can and a thickness of a portion held in contact with an inner circumferential surface of the outer can are different from each other and the plurality of protrusions are protruded The end portion is directly in point contact with the inner side of the outer can, and the support member is formed in an M shape as a whole.

Description

[0001] Gas turbine combustion machine supporting units [0002]

The present invention is intended to prevent problems due to thermal deformation by changing the fixing state and the shape of the supporting member in order to prevent deformation due to high temperature when the supporting member is installed between the inner can and the outer can, To a support unit for a gas turbine combustor.

Generally, a gas turbine is a kind of prime mover that injects combustion gas to the blade side of a turbine to obtain rotational force, and can be largely divided into a compressor, a combustor, and a turbine. The compressor receives a part of the power generated from the rotation of the turbine, compresses the introduced air to a high pressure, and the compressed air is transmitted to the combustor.

The combustor mixes and burns the compressed air and the fuel to generate a high-temperature combustion gas stream, and injects the high-temperature combustion gas stream to the turbine side, and the injected combustion gas rotates the turbine to obtain a rotational force.

Here, the compressor and the turbine include a plurality of turbine disks having blades radially coupled to the outer periphery, wherein the compressor typically includes more turbine disks than the turbine, and a plurality of turbine disks disposed in the compressor, And a plurality of turbine disks disposed on the turbine side is referred to as a turbine section.

A combustor is installed in the gas turbine together with the compressor to perform high-temperature combustion at a high temperature. A support member in a trapezoidal shape is provided between the inner can and the outer can.

The support member can not be stably fixed to the outer can while being thermally expanded at a high temperature, resulting in a problem that thermal deformation occurs due to deformation or high temperature combustion gas.

Korean Patent Publication No. 10-2011-0058336 (Published Date: June 01, 2011)

Embodiments of the present invention provide a gas turbine combustor in which a support member is supported and fixed between an inner can and an outer can that are provided in a gas turbine combustor, To prevent deformation due to high-temperature heat conduction.

The support unit of the can for the gas turbine combustor according to the first embodiment of the present invention includes a first contact portion positioned between the inner can and the outer can of the gas turbine combustor and fixed to the inner can in a state where the one end is in contact with the inner can, And a support member extending from the first contact portion toward the inner side of the outer can and having a second contact portion fixed at an end thereof in contact with the inner side of the outer can, And a plurality of protrusions projecting roundly toward the inside of the outer can, wherein a thickness of a portion fixed to the outer side of the inner can is different from a thickness of a portion held in contact with an inner circumferential surface of the outer can, The protruding end portion is maintained in a state of being directly in point contact with the inner side of the outer can, and the supporting member is formed in an M shape as a whole.
A plurality of support members are disposed along the circumferential direction between the inner can and the outer can.
The supporting member is formed inside the outer can and is held in contact with a plurality of grooves formed along the longitudinal direction of the supporting member and is welded to the supporting member through welding at the outside of the groove And a plurality of fixing points are formed between the supporting member and the outer can by welding.
The protrusions are formed in a semicircular shape or an elliptical shape.

A support unit of a can for a gas turbine combustor according to a second embodiment of the present invention includes a first contact portion which is positioned between an inner can and an outer can of a gas turbine combustor and is fixed in a state of being in contact with the inner can at one end, And a support member extending from the first contact portion toward the inner side of the outer can and having a second contact portion fixed at an end thereof in contact with the inner side of the outer can, A first protrusion protruding radially toward the inner side of the outer can and having a protruding end fixed to the inner side of the outer can; and a second protrusion protruding from the first protrusion along an inner circumferential direction of the inner can, And a second protrusion protruding radially from the extension portion toward the inside of the outer can and having a protruding end fixed to the inside of the outer can, Wherein the first and second protrusions are formed in a semicircular shape or an elliptical shape, wherein the support member is held in contact with the thickness of the portion fixed to the outer side of the inner can and the inner circumferential surface of the outer can Wherein the protruding end portions of the first and second protrusions are directly in point contact with the inner side of the outer can, and the support member is formed in an M-shape as a whole .

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And the extension has a length that is longer than a radius of the first and second protrusions.

Embodiments of the present invention enable a worker to perform a fixing operation through a welding method for a supporting member positioned between an inner can and an outer can to improve the workability of the worker and expose the supporting member at a high temperature condition Even when thermal expansion occurs, deformation and breakage are minimized, and durability is improved even in long-term use.

The embodiments of the present invention can maintain the state where the support member is stably fixed between the inner can and the outer can to prevent deformation and breakage of the inner can and the outer can to thereby stably operate the combustor.

1 is a perspective view showing a state in which a support unit of a can for a gas turbine combustor according to the first embodiment of the present invention is installed.
2 is a longitudinal sectional view of a can for a gas turbine combustor according to a first embodiment of the present invention;
3 is a perspective view showing a mounting state of a can support unit for a gas turbine combustor according to a first embodiment of the present invention;
4 is a view showing a modified embodiment of the support unit according to the first embodiment of the present invention.
5 is a view showing another embodiment of the support unit according to the first embodiment of the present invention.
6 is a perspective view showing a state in which a support unit of a can for a gas turbine combustor according to a second embodiment of the present invention is installed.

A support unit of a can for a gas turbine combustor according to a first embodiment of the present invention will be described with reference to the drawings. 1 is a perspective view showing a state in which a support unit of a can for a gas turbine combustor according to a first embodiment of the present invention is installed. Fig. 2 is a perspective view of a can for a gas turbine combustor according to a first embodiment of the present invention. .

1 and 2, a support unit for a can for a gas turbine combustor according to the present embodiment is provided with a support member 100 between an inner can 10 and an outer can 20, (100) are arranged in the state shown in the drawing by a plurality of pieces along the circumferential direction between the inner can (10) and the outer can (20).

The supporting member 100 is maintained in a state of point contact between the inner can 10 and the outer can 20. The supporting member 100 is in contact with the inner circumferential surface of the outer can 20, And the fixed state is maintained by welding to the formed trench 30.

The support member 100 may include a first contact portion 110 that maintains a state of point contact with the inner can 10 and a second contact portion 120 that maintains a state of point contact with the inner circumferential surface of the outer can 20, .

The support member 100 is formed in the shape of a plate having a predetermined width in the axial direction and the first contact portion 110 is fixed to the outer circumferential surface of the inner can 10 and the second contact portion 120 is fixed to the outer surface of the outer can, And is fixed to the inner circumferential surface of the can 20.

A plurality of grooves 30 are formed in a section corresponding to the longitudinal length of the protrusions 130. The grooves 30 are formed in a shape of a circle, an ellipse, or a slot having a predetermined length, It is not limited to a specific form.

The groove 30 is formed in a condition that the work space of the support member 100 positioned between the inner can 10 and the outer can 20 when the worker fixes the support member 100 is narrow, It is formed in consideration of the difficulty of fixing.

A plurality of grooves 30 are formed on the inner side of the outer can 20 so that a certain amount of beads can be formed between the support member 100 and the groove 30 when welding is performed, (100) is stably fixed to the side of the outer can (20), and even when high temperature heat is conducted, the phenomenon that the outer can (20) is detached or deformed is suppressed to the utmost.

For reference, the depth and the shape of the groove 30 are not limited to the depth and the shape shown in the drawings, but can be variously changed and are not particularly limited to the shapes shown in the drawings.

Referring to FIG. 3, the groove 30 may be formed in a slot shape. In this case, the groove 30 may extend in a length corresponding to the longitudinal length of the protrusion 130 of the support member 100, May be inserted into the body.

Therefore, the worker can easily fix the workpiece by welding while the support member 100 is positioned in the groove portion 30, thereby improving the workability of the worker and improving the fixability of the support member 100 at the same time The structural safety can be improved and deformation due to thermal deformation can be prevented.

Further, since the support member 100 has a plurality of fixing points formed on the outer can 20, it is more stably fixed.

The support member 100 according to the present embodiment includes a protrusion 130 protruding radially from the outside of the inner can 10 toward the inside of the outer can 20, A semicircular shape, or an elliptical shape.

When the protrusions 130 are formed in a round shape having a semicircular shape or a predetermined curvature, when the volume of the combustor is expanded due to thermal expansion while the temperature of the combustor is maintained at a high temperature, Thermal expansion occurs in the circumferential direction of the rounded outer circumferential surface and the inner circumferential surface to prevent thermal deformation due to the operating temperature of the gas turbine combustor.

Also, even if thermal expansion occurs in the support member 100, thermal expansion is partially generated toward the outer can 20, but thermal expansion is performed through the circumferential direction of the support member 100, It is possible to prevent breakage due to deformation or thermal expansion of the substrate.

The protrusions 130 are formed in a semicircular shape or an elliptical shape from the inner can 10 toward the outer can 20 as shown in the figure and are configured to have a predetermined curvature and are not particularly limited to the curvatures shown in the drawings.

When the support member 100 is configured as described above, the structural stability of the outer can 20 can be improved. Even if the outer can 20 is used for a long time, damage due to thermal deformation and deformation and breakage of the inner can 10 and the outer can 20 Can be prevented.

A plurality of support members 100 are disposed along the circumferential direction between the inner can 10 and the outer can 20 and the interval and the number of the support members 100 are not particularly limited. However, the inner can 10 and the outer can 20, The number shown in the drawings is not necessarily limited to the above.

4, a plurality of contact points are held on the inner side of the inner can 10 in the case of the present embodiment, in which the support member 100 is fixed to the inner can 10, Contacted state or point-contacted state with respect to the substrate 20, and it is noted that the surface-contact state is not always maintained as shown in the drawing. In this case, even when thermal expansion occurs in the support member 100 under a high temperature condition, the contact area between the inner can 10 and the outer can 20 is minimized, and thus a stable support state is maintained.

The supporting member 100 according to the present embodiment is similar to the above-described embodiment, but has a structure in which a plurality of or a plurality of protrusions 130 are formed. For example, the supporting member 100 is formed in an M- A plurality of can is arranged along the circumferential direction between the can (20).

When the support member 100 is constructed as described above, thermal expansion occurs in the plurality of protrusions 130 as shown by arrows, even when thermal expansion occurs, and deformation or breakage due to concentration of stress occurs at a specific position Stable thermal expansion is achieved.

Also, the abrupt expansion of the inner can 10 and the outer can 20 can be minimized, and deformation and breakage of the inner can 10 or the outer can 20 due to stress concentration can be prevented.

5, the support member 100 has a thickness t1 of a portion fixed to the outer side of the inner can 10 and a thickness t2 of a portion held in contact with the inner circumferential surface of the outer can 20, In this case, the degree of thermal expansion due to the difference in thickness is changed, so that the designer can adjust the direction and the degree of deformation of the thermal expansion advantageous to the design, so that the thermal expansion of the support member It is possible to more actively control the deformation state of the body 100.

When the thickness of the support member 100 is adjusted differently, excessive thermal expansion or thermal expansion at a specific position can be prevented, thereby preventing damage to the support member 100, The outer can 20 can be stably supported.

A support unit of a can for a gas turbine combustor according to a second embodiment of the present invention will be described with reference to the drawings.

6, the support unit of the can for the combustor is positioned between the inner can 10 of the gas turbine combustor and the outer can 20, and is fixedly attached to the inner can 10 in a point- And a second contact portion 1200 which is fixed in a state in which the other end is in point contact with the inside of the outer can 20 at the first contact portion 1100 do.

The support member 1000 includes a first protrusion 1300 protruding from the outer side of the inner can 10 toward the inner side of the outer can 20 and having an end fixed to the inner side of the outer can 20, An extension 1400 extending roundly at a predetermined length along the circumferential direction of the inner can 10 at the first protrusion 1300 and an extension 1400 extending from the extension 1400 to the outer can 14 And a second protrusion 1500 protruding radially toward the inside and having a protruding end fixed to the inside of the outer can 20.

The support member 1000 according to the second embodiment is different in shape from the support member 100 according to the first embodiment described above. The support member 1000 according to the second embodiment and the support according to the first embodiment The difference of the member 100 is that the distance between the first protrusion 1300 protruding toward the outer can 20 and the second protrusion 1500 is larger than the distance between the protrusion 1400 of the first embodiment 130).

The support member 1000 according to the second embodiment expands toward the direction shown by the arrow even when thermal expansion occurs in the longitudinal direction and the width direction of the extension part 1400 when thermal expansion occurs, Or the outer can 20 can be suppressed as much as possible.

The extended portion 1400 extends in a rounded shape toward the inner can 10 without extending horizontally between the first projecting portion 1300 and the second projecting portion 1500. Therefore, when the hot heat is conducted, 1 heat is directed toward the first protrusion 1300 and the second protrusion 1500 toward the arrow direction.

Since the connected portions of the first protrusion 1300 and the extended portion 1400 are connected in a rounded state toward the outer can 20 without being connected at right angles, even when the hot heat is directly transmitted, The inner can 10 and the outer can 20 are prevented from being deformed or damaged by minimizing the degree of expansion toward the outside of the outer can or the inner can and the thermal expansion is mainly generated in the extended portion 1400, The stably supported state of the movable member 20 can be maintained.

The first and second protrusions 1300 and 1500 are formed in a semicircular shape or an elliptical shape. The first and second protrusions 1300 and 1500 are formed in such a manner that the breakage and deformation of the support member 1000 are minimized when high temperature heat is conducted This is to prevent deformation of the inner can 10 and the outer can 20.

The extension 1400 has a length that is relatively longer than the radius of the first and second protrusions 1300 and 1500. In this case, the inner can 10 and the outer can 20, The thermal expansion is mainly generated in the longitudinal direction of the extended portion 1400 as shown by the arrows, so that the stable supporting performance of the supporting member 1000 is maintained.

The protruded end portions of the first and second protrusions 1300 and 1500 are directly in point contact with the inner side of the outer can 20 and the support member 1000 is formed in an M shape as a whole The same operation and effect as those of the first embodiment described above are expected and detailed description is omitted.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

10: Inner can
20: Outer can
30: Groove
100, 1000: Support member
130: protrusion
110, 1100: a first contact
120, 1200: a second contact
1300: first protrusion
1400: Extension part
1500: second projection

Claims (8)

A first contact portion located between the inner can and the outer can of the gas turbine combustor and fixed to the inner can in a state where one end thereof is in contact with the outer can, And a support member having a second contact portion fixed in contact with an inner side of the support member,
Wherein the support member comprises:
And a plurality of protrusions protruding roundly from the outer side of the inner can toward the inner side of the outer can, wherein the thickness of the portion fixed to the outer side of the inner can and the thickness of the portion held in contact with the inner circumference of the outer can Different,
Wherein the protruding end of the plurality of protrusions is maintained in a state of being directly in point contact with the inner side of the outer can, and the support member is formed in an M shape in its entirety. The method according to claim 1,
Wherein the support member comprises:
And a plurality of can is disposed along the circumferential direction between the inner can and the outer can. The method according to claim 1,
Wherein the support member comprises:
Wherein the outer can is welded to the support member by welding at an outer side of the groove after being held in contact with a plurality of grooves formed in the inner side of the outer can in contact with the plurality of grooves formed along the longitudinal direction of the support member, And a plurality of fixing points are formed between the outer can by welding. delete delete The method according to claim 1,
Wherein the projecting portion is formed in one of a semicircular shape or an elliptical shape. A first contact portion located between the inner can and the outer can of the gas turbine combustor and fixed to the inner can in a state where one end thereof is in contact with the outer can, And a support member having a second contact portion fixed in contact with an inner side of the support member,
Wherein the support member comprises:
A first protrusion protruding radially from the outer side of the inner can toward the inner side of the outer can and fixed to the inner side of the outer can, and a second protrusion protruding from the first protrusion along a circumferential direction of the inner can at a predetermined length And a second protruding portion protruding radially from the extending portion toward the inside of the outer can and fixed to the inside of the outer can, and the first and second protrusions A semi-circular shape or an elliptical shape,
Characterized in that the thickness of the portion fixed to the outer side of the inner can and the thickness of the portion held in contact with the inner surface of the outer can differ from each other,
The first and second protrusions are maintained in a state in which the protruded end portion is directly in point contact with the inner side of the outer can, and the support member is formed in an M shape Support unit for gas turbine combustor. 8. The method of claim 7,
The extension
And has a length that is longer than a radius of the first and second protrusions.
KR1020150108923A 2015-07-31 2015-07-31 Gas turbine combustion machine supporting units KR101885414B1 (en)

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KR102118143B1 (en) * 2018-09-14 2020-06-02 두산중공업 주식회사 Combustor and gas turbine including the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012154613A (en) * 2011-01-25 2012-08-16 General Electric Co <Ge> Support body between transition piece and impingement sleeve in combustor

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Publication number Priority date Publication date Assignee Title
JPH09329337A (en) * 1996-06-11 1997-12-22 Hitachi Ltd Liner for gas turbine combustor
FR2920524B1 (en) * 2007-08-30 2013-11-01 Snecma TURBOMACHINE WITH ANNULAR COMBUSTION CHAMBER
KR101197481B1 (en) 2009-11-26 2012-11-09 두산중공업 주식회사 Clutch for starting motor of gas turbine engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012154613A (en) * 2011-01-25 2012-08-16 General Electric Co <Ge> Support body between transition piece and impingement sleeve in combustor

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