CN104566479B - A kind of supporting construction for improving gas-turbine combustion chamber cap stability - Google Patents
A kind of supporting construction for improving gas-turbine combustion chamber cap stability Download PDFInfo
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- CN104566479B CN104566479B CN201410834076.4A CN201410834076A CN104566479B CN 104566479 B CN104566479 B CN 104566479B CN 201410834076 A CN201410834076 A CN 201410834076A CN 104566479 B CN104566479 B CN 104566479B
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- adjusting lever
- supporting construction
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Abstract
A kind of supporting construction for improving gas-turbine combustion chamber cap stability, belongs to gas turbine technology field.The supporting construction includes the first supporting member and the second supporting member；First supporting member includes multiple first adjusting levers, multiple first bearings and outer support ring；Second supporting member includes multiple second adjusting levers, multiple second bearings and inside support ring.Described multiple first bearings and the second bearing are separately fixed on outer barrel, described multiple first adjusting levers and the second adjusting lever are each passed through the first bearing and the second bearing, it is threaded on first adjusting lever and the second adjusting lever, by its present position of threaded adjusting, outer support ring and inside support ring is set to be in tensioning state.Supporting construction can effectively improve the rigidity of peripheral glass holder, improve cap stability, and can obtain specific intrinsic frequency by the first adjusting lever and the second adjusting lever, so as to accurately avoid the frequency that thermal acoustic oscillation is likely to occur.
Description
Technical field
It is more particularly to a kind of to improve gas-turbine combustion chamber cap stability the present invention relates to gas turbine technology field
Supporting construction.
Background technology
Traditional gas-turbine combustion chamber uses diffusion combustion technology, due to the localized hyperthermia in combustion chamber, causes it dirty
Thing discharge is contaminated, especially discharged nitrous oxides are higher.In view of the requirement to discharge of gas turbine amount is more and more stricter, meet such
It is required that a method be traditional diffusion flame combustors is developed the combustion chamber for fully premixed burning, with reduce NOx and
CO discharge.There are dry low NOx (DLN) combustion system, dry low emissions (DLE) combustion in these combustion chambers well known in the prior art
Burning system, poor fuel premix (LPM) combustion system.These combustion chambers generally include the multiple fuel nozzles being arranged in cylinder, institute
State cylinder also referred to as cap.
Because these combustion chambers are run under such poor fuel/air ratio, therefore the small change in speed can cause matter
Amount flow is varied widely, so as to cause fuel/air rate to fluctuate.These fluctuations can cause heat liberation rate, heat release rate to occur larger become
Change, and cause to produce high pressure fluctuations in end cap.The fluctuation of fuel/air rate, swirl flame interact and unstable
Interaction between heat release may cause pressure fluctuation, and the phenomenon of this pressure fluctuation is referred to as thermal acoustic oscillation.If burning
The intrinsic frequency of room part is overlapped to a certain extent with the frequency of thermal acoustic oscillation, can shorten hardware longevity.Namely
Say, damaged caused by the resonance meeting of thermal acoustic oscillation initiation is to combustion chamber componentses, these parts need periodic maintenance.And repair burning
Room part needs to make gas turbine shut down.Therefore, except in addition to the related cost of maintenance combustion chamber componentses, also in the presence of because
Extra cost caused by the loss of time that gas turbine maintenance is caused.
The content of the invention
It is an object of the invention to provide a kind of supporting construction for improving gas-turbine combustion chamber cap stability, the technical side
Case can improve the rigidity of cap by reinforcing the peripheral glass holder in cap, effectively avoid thermal acoustic oscillation frequency, extension cap
Life-span.
To achieve these goals, technical scheme is as follows：
It is a kind of improve gas-turbine combustion chamber cap stability supporting construction, the cap include multiple peripheral glass holders,
End cap and outer barrel, one end of each peripheral glass holder are fixed on end cap；Characterized in that, the supporting construction is included along cover
Cap shaft line is sequentially arranged the first support member and the second support member, and the first support member includes an outer support ring and multiple edges
First support adjustment structure of circumference；Described outer support ring is connected with the outside of each peripheral glass holder, each first
Supportting adjustment structure includes the first adjusting lever and the first bearing, and the first bearing is fixed on outer barrel, the first adjusting lever and the first bearing
It is connected by screw thread, and the screwed hole through on the first bearing is in contact with the outer support ring；Second support member bag
Include an inside support ring and multiple multiple second support adjustment structures circumferentially arranged；Inside support ring and each peripheral glass holder
Inner side is connected；Each second support adjustment structure includes the second adjusting lever and the second bearing, and described each second bearing is fixed
On outer barrel, the second adjusting lever is connected through the through hole on the second bearing with inside support ring by screw thread.
In above-mentioned technical proposal, the outer support ring is circular or petal-shaped；The inside support ring is circular or petal-shaped.
The first described bearing and the cross sectional shape of the second bearing are arch.
The supporting construction for the raising gas-turbine combustion chamber cap stability that the present invention is provided, with advantages below：1. prop up
Support structure can effectively improve the rigidity of peripheral glass holder, improve cap stability；2. by being adjusted to the first adjusting lever and second
Bar applies the control of the size of moment of torsion, can adjust the size of outer support ring and inside support ring to the peripheral active force of glass holder 1, so that
The rigidity of the peripheral glass holder of control, plays the effect of regulation cap intrinsic frequency, effectively avoids the thermal acoustic oscillation frequency being likely to occur
Scope.
Brief description of the drawings
Fig. 1 is the structural representation for the supporting construction for improving gas-turbine combustion chamber cap stability.
Fig. 2 is Fig. 1 A-A sectional views.
Fig. 3 is Fig. 1 B-B sectional views.
In figure, 1- peripheries glass holder；2- end caps；3- outer barrels；The adjusting levers of 4a- first；The adjusting levers of 4b- second；5a- outer supports
Ring；5b- inside support rings；The bearings of 6a- first；The bearings of 6b- second；11- shells；12- flanges；13- burner inner liner locating pieces；14- branch
Support member；15- centers glass holder；16- floating rings；17- center bearing brackets.
Embodiment
With reference to the accompanying drawings and examples, the embodiment to the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not used in limitation the scope of the present invention.
As shown in figure 1, cap includes multiple peripheral glass holders 1, end cap 2, outer barrel 3, shell 11, flange 12, burner inner liner positioning
Block 13, support member 14, center glass holder 15, floating ring 16 and center bearing bracket 17, cap are installed to head of combustion chamber by flange 12,
Flange 12 is fixedly linked with shell 11, and multiple burner inner liner locating pieces 13, the effect of burner inner liner locating piece 13 are disposed with flange 12
It is to prevent the movement of burner inner liner upstream direction, the inner side of shell 11 sets multiple support members 14, the other end and the outer barrel 3 of support member 14
It is connected；The upstream end of outer barrel 3 sets end cap 2, and the side of end cap 2 is disposed with multiple floating rings 16, nozzle and the inner side of floating ring 16
Coordinate, play sealing function, the opposite side of end cap 2 is disposed with multiple peripheral glass holders 1 and a center glass holder 15；Center glass holder 15
There is center bearing bracket 17 to play a supportive role in downstream direction, in the present invention, center glass holder is not required.Each peripheral glass holder
1 one end is fixed on end cap 2；The other end of peripheral glass holder 1 is not fixed, it is allowed to heated axial expansion, and can be assembled for realization,
Diametrically leave certain interval.Multiple peripheral glass holders 1 improve stability by supporting construction, and the supporting construction includes first
Component and the second supporting member are supportted, the first supporting member and the second supporting member are sequentially arranged along cap axis；First support structure
Part includes multiple first adjusting lever 4a, multiple first bearing 6a and outer support ring 5a, and described each first bearing 6a is fixed on
On outer barrel, the first adjusting lever 4a is passed through to be threaded on the first bearing 6a, the first adjusting lever 4a, and screw thread is provided with the first bearing 6a
Hole, the first adjusting lever 4a is connected with the first bearing 6a by screw thread；Second supporting member includes the multiple second adjustment
Bar 4b, multiple second bearing 6b and inside support ring 5b, described each second bearing 6b are fixed on outer barrel, the second adjusting lever 4b
It is threaded on through the second bearing 6b, the second adjusting lever 4b, is provided with through hole, the inside support ring 5b and opens on the second bearing 6b
There are multiple screwed holes, the second adjusting lever 4b is connected through the second bearing 6b and inside support ring 5b by screw thread.Pass through
Its present position of threaded adjusting, makes outer support ring 5a and inside support ring 5b be in tensioning state, so that peripheral glass holder is restrained,
Rigidity has increased.
As shown in Figures 2 and 3, screwed hole is provided with the first bearing 6a, the first adjusting lever 4a and the first bearing 6a are logical
Cross screw thread mating connection.First adjusting lever 4a end withstands on outer support ring 5a outside, and outer support ring 5a is fixed on multiple outer
The outside of glass holder 1 is enclosed, outer support ring 5a is circular or petal-shaped.It is provided with second bearing 6b on through hole, the inside support ring 5b
Multiple screwed holes are provided with, the second adjusting lever 4b is connected through the second bearing 6b and inside support ring 5b by screw thread.It is interior
Support ring 5b is fixed on the inner side of multiple peripheral glass holders 1, and inside support ring 5b is circular or petal-shaped.When peripheral glass holder 1 is installed just
Position, inserts the first bearing 6a and by screw advancement, until the first adjusting lever 4a ends and outer support ring by the first adjusting lever 4a
5a is contacted and is produced certain active force；Second adjusting lever 4b is passed through into the second bearing 6b and driven with the screw thread on inside support ring 5b
It is dynamic to advance, until the second adjusting lever 4b head is contacted with outer barrel 3 and produces certain effect power.First bearing 6a and the second bearing
6b cross sectional shape is arch.Outer support ring 4a and inside support ring 4b produces active force in opposite direction to peripheral glass holder 1 jointly,
So as to play a part of fixed support to peripheral glass holder 1.By applying moment of torsion to the first adjusting lever 4a and the second adjusting lever 4b
The control of size, can adjust the size of outer support ring 5a and inside support ring 5b to the peripheral active force of glass holder 1, so as to control periphery
The rigidity of glass holder 1, plays the effect of regulation cap intrinsic frequency, effectively avoids the thermal acoustic oscillation frequency range being likely to occur.
Claims (4)
1. it is a kind of improve gas-turbine combustion chamber cap stability supporting construction, the cap include multiple peripheral glass holders (1),
End cap (2) and outer barrel (3), one end of each peripheral glass holder (1) are fixed on end cap (2)；Characterized in that, the support
Structure includes being sequentially arranged the first support member and the second support member along cap axis, and the first support member includes propping up outside one
Pushing out ring (5a) and multiple the first support adjustment structures circumferentially arranged；Described outer support ring (5a) and each peripheral glass holder
Outside is connected, and each first support adjustment structure includes the first adjusting lever (4a) and the first bearing (6a), and the first bearing (6a) is solid
It is scheduled on outer barrel (3), the first adjusting lever (4a) is connected with the first bearing (6a) by screw thread, and passes through the first bearing (6a)
On screwed hole be in contact with the outer support ring (5a)；Second support member includes an inside support ring (5b) and multiple along circle
The multiple second supports adjustment structures arranged in week；Inside support ring (5b) is connected with the inner side of each peripheral glass holder；Each second
Supportting adjustment structure includes the second adjusting lever (4b) and the second bearing (6b), and described each second bearing (6b) is fixed on outer barrel
(3) on, the second adjusting lever (4b) is connected through the through hole on the second bearing with inside support ring (5b) by screw thread.
2. a kind of supporting construction for improving gas-turbine combustion chamber cap stability as claimed in claim 1, it is characterised in that
Outer support ring (5a) is circle.
3. a kind of supporting construction for improving gas-turbine combustion chamber cap stability as claimed in claim 1, it is characterised in that
Inside support ring (5b) is circle.
4. a kind of supporting construction of raising gas-turbine combustion chamber cap stability as described in claim 1,2 or 3, its feature
It is, described the first bearing (6a) and the cross sectional shape of the second bearing (6b) are arch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410834076.4A CN104566479B (en) | 2014-12-26 | 2014-12-26 | A kind of supporting construction for improving gas-turbine combustion chamber cap stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410834076.4A CN104566479B (en) | 2014-12-26 | 2014-12-26 | A kind of supporting construction for improving gas-turbine combustion chamber cap stability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104566479A CN104566479A (en) | 2015-04-29 |
| CN104566479B true CN104566479B (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410834076.4A Active CN104566479B (en) | 2014-12-26 | 2014-12-26 | A kind of supporting construction for improving gas-turbine combustion chamber cap stability |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669758B (en) * | 2021-08-26 | 2023-07-11 | 中国联合重型燃气轮机技术有限公司 | Combustion chamber hood and gas turbine with same |
| CN113739203B (en) * | 2021-09-13 | 2023-03-10 | 中国联合重型燃气轮机技术有限公司 | Cap assembly for a combustor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5581227A (en) * | 1978-12-15 | 1980-06-19 | Hitachi Ltd | Combustor supporting structure |
| JPH01131821A (en) * | 1987-11-17 | 1989-05-24 | Hitachi Ltd | Supporting structure for gas turbine combustion unit |
| CN1590849A (en) * | 2003-08-28 | 2005-03-09 | 通用电气公司 | Combustion liner cap assembly for combustion dynamics reduction |
| CN102052679A (en) * | 2009-11-02 | 2011-05-11 | 通用电气公司 | Apparatus and methods for fuel nozzle frequency adjustment |
| CN103703318A (en) * | 2011-05-20 | 2014-04-02 | 西门子能量股份有限公司 | Thermally compliant support for a combustion system |
| CN204648320U (en) * | 2014-12-26 | 2015-09-16 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | A kind of supporting construction improving gas-turbine combustion chamber cover cap stability |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8104290B2 (en) * | 2008-10-15 | 2012-01-31 | Alstom Technology Ltd. | Combustion liner damper |
-
2014
- 2014-12-26 CN CN201410834076.4A patent/CN104566479B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5581227A (en) * | 1978-12-15 | 1980-06-19 | Hitachi Ltd | Combustor supporting structure |
| JPH01131821A (en) * | 1987-11-17 | 1989-05-24 | Hitachi Ltd | Supporting structure for gas turbine combustion unit |
| CN1590849A (en) * | 2003-08-28 | 2005-03-09 | 通用电气公司 | Combustion liner cap assembly for combustion dynamics reduction |
| CN102052679A (en) * | 2009-11-02 | 2011-05-11 | 通用电气公司 | Apparatus and methods for fuel nozzle frequency adjustment |
| CN103703318A (en) * | 2011-05-20 | 2014-04-02 | 西门子能量股份有限公司 | Thermally compliant support for a combustion system |
| CN204648320U (en) * | 2014-12-26 | 2015-09-16 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | A kind of supporting construction improving gas-turbine combustion chamber cover cap stability |
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|---|---|
| CN104566479A (en) | 2015-04-29 |
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Effective date of registration: 20200116 Address after: 102209 Beijing Changping District in the future of the national electric investment group Park in the future science city south of Beijing Patentee after: China United heavy-duty gas turbine technology Co., Ltd. Address before: 100084 No. 8, building 1, No. 1001, Zhongguancun East Road, Beijing, Haidian District Patentee before: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. |
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