CN104595928A - Acoustic flame tube of diffusion combustion chamber - Google Patents
Acoustic flame tube of diffusion combustion chamber Download PDFInfo
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- CN104595928A CN104595928A CN201510035923.5A CN201510035923A CN104595928A CN 104595928 A CN104595928 A CN 104595928A CN 201510035923 A CN201510035923 A CN 201510035923A CN 104595928 A CN104595928 A CN 104595928A
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- inner liner
- burner
- resonator
- combustion chamber
- diffusion
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Abstract
The invention relates to the technical field of gas turbines, and specifically discloses an acoustic flame tube of a diffusion combustion chamber. The acoustic flame tube comprises a head nozzle hole, a flame tube body, a combustion chamber cover and a plurality of resonators, wherein the head nozzle hole is formed in the front end of the flame tube body; the head nozzle hole is used for installing a nozzle; an opening in the rear end of the flame tube body is used for connecting a transition section; the flame tube body is used for limiting a reactant to flow; the flame tube body is provided with a cooling structure and main combustion holes; the combustion chamber cover is arranged between the head nozzle hole and the flame tube body; a plurality of diffusion cooling holes are formed in the combustion chamber cover; the resonators are arranged on the combustion chamber cover and are in air-tight connection with a working medium in the flame tube body. According to the acoustic flame tube disclosed by the invention, the frequency in the combustion chamber can be effectively regulated, and thermal-acoustic oscillation can be restrained.
Description
Technical field
The present invention relates to gas turbine technology field, particularly relate to a kind of diffusion burner acoustics burner inner liner being applicable to hydrogen-rich fuel.
Background technology
For heavy duty gas turbine, along with the raising of parameter level, burning average indoor temperature is also in rising, so the risk of combustion chamber heat sound oscillation increases.Thermal acoustic oscillation be in the nature the fluctuation of combustion chamber Thermal release and being coupled of pressure oscillation, thermal acoustic oscillation can cause the increase of burning pollutant on the one hand, increases tempering risk, and another aspect can damage chamber structure, causes combustion chamber service life reduction.
Control and the prediction of thermal acoustic oscillation are difficult problems for heavy duty gas turbine combustion chamber.The method that thermal acoustic oscillation controls comprises ACTIVE CONTROL and Passive Control.ACTIVE CONTROL means comprise adjustment combustion chamber fuel and distribute thus change the distribution of combustion chamber Thermal release, mainly through applying the dynamic conditioning contrary with combustion chamber frequency of oscillation phase place to fuel control valve thus suppressing the vibration of combustion chamber.Passive Control is then by arranging that helmholtz resonator is decayed associated amplitude.
Typically, think that poor lean premixed combustor more easily thermal acoustic oscillation occurs, and traditional combustion room relatively thermal acoustic oscillation is less likely to occur because the more Cooling Holes that burner inner liner exists can play dissipation effect to heat energy to sound transformation of energy.But when combustion chamber uses hydrogen-rich fuel, there is larger change in the flame characteristics in combustion chamber.But in the last few years, the diffusion burner that some commercial Application use hydrogen-rich fuel also there occurs thermal acoustic oscillation, cause very large economic loss.The reason of this phenomenon is caused mainly to comprise two aspects: the raising of (1) gas turbine parameter causes the rising of combustion chamber mean temperature and the increase of Thermal release intensity, and corresponding Thermal release fluctuation can cause larger impact; (2) activity of hydrogen-rich fuel is high, flame propagation speed, more responsive for combustion chamber pressure oscillation.
In prior art: be in the patent of CN101922711A at publication number, General Electric Co. Limited discloses a kind of resonator assembly for alleviating dynamic change in gas turbine, this resonator assembly is connected respectively on burner, by selective layout and adjust multiple resonator with suppress from multiple burner arranged continuously one or more not homophase of displacement fluids and the dynamic interaction of homophase; Be in the patent of CN102003286A at publication number, company of General Electric proposes a kind of gas turbine combustor provisioning policy acoustically strengthened, in the method, resonator and corresponding controller by arranging geometry-variable on the fluid injection system of the upstream of gas turbine burner are decayed or pressure oscillation in damping burner; Be in the patent of CN101263343A at publication number, a kind of method and apparatus at gas turbine damping of thermo-acoustic oscillations has been invented by Siemens Company, in that patent, resonator is arranged on the casing of combustion chamber, the thermal acoustic oscillation problem of a certain frequency range can effectively be eliminated/avoid in resonator and combustion chamber, by two pipeline connections; Be in the patent of CN101061353A at publication number, a kind of combustion chamber has been invented by Siemens Company, this combustion chamber has at least one chamber wall and at least one Resonator device, and Resonator device is arranged in combustion chamber wall surface, by some frequency of these resonator damping combustion pulsations; In the patent of publication number CN1551965A, a kind of vibration absorber reducing combustion pulsation in gas-turbine installation has been invented by Alstom, this vibration absorber have into double-walled form chamber wall and with an outer wall portion and an internal face part hermetic closed go out a medial compartment, improve the pulsation of some frequency that damping is formed in combustion chamber by this structure; Be in the patent of CN1615416A at publication number, a kind of novel gas-turbine combustion chamber structure has been invented by Alstom, in order to the hot acoustic vibration decayed in this combustion chamber, settle at least one Helmholtz's shock absorber, the vibration damping volume of this Helmholtz's shock absorber is connected with combustion chamber by passage, and the damping frequency of this Helmholtz's shock absorber is adjustable simultaneously.
Summary of the invention
(1) technical problem that will solve
The object of this invention is to provide a kind of diffusion burner acoustics burner inner liner, effectively to regulate the frequency of combustion chamber, thermal acoustic oscillation is suppressed.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of diffusion burner acoustics burner inner liner, comprise head nipple hole and burner inner liner cylindrical shell, described head nipple hole is located at the front end of described burner inner liner cylindrical shell, described head nipple hole is for installing nozzle, the open rearward end of described burner inner liner cylindrical shell is for connecting changeover portion, described burner inner liner cylindrical shell is used for limited reactions logistics and moves, described burner inner liner cylindrical shell is provided with cooling structure and primary holes, also comprise combustion chamber cover cap resonator, described combustion chamber cover cap is located between described head nipple hole and described burner inner liner cylindrical shell, described combustion chamber cover cap is provided with multiple diffusion cooling hole, described resonator is multiple, multiple resonator to be all located on described combustion chamber cover cap and to be tightly connected with the working medium of described burner inner liner inner barrel.
Preferably, the diameter of described diffusion cooling hole is 0.5mm ~ 1.5mm.
Preferably, the angle of the axis of described diffusion cooling hole and the normal direction of described combustion chamber cover cap is 45 ° ~ 60 °.
Preferably, the radial position of multiple resonator is identical and be uniformly distributed circumferentially.
Or, the identical and position of the primary holes that staggers in circumference, the warp-wise position of multiple resonator.
Or, multiple resonator have two kinds of radial positions and the resonator of two kinds of radial positions in circumferential interlaced arrangement.
Or, multiple resonator have two kinds of radial positions and the resonator of two kinds of radial positions in circumferential interlaced arrangement and the position of the primary holes that staggers.
Preferably, described resonator is helmholtz resonator.
Or described resonator is quarter wave resonator.
Preferably, the blanketing frequency scope of described resonator at least comprises blanketing frequency scope 500Hz ~ 1000Hz, blanketing frequency scope 1000Hz ~ 2000Hz and blanketing frequency scope 2000Hz ~ 3000Hz.
(3) beneficial effect
This burner inner liner of diffusion burner acoustics burner inner liner of the present invention has disperses cooling dome cap, and adds a series of resonator dispersing on cooling dome cap, effectively can regulate the frequency of combustion chamber, suppress thermal acoustic oscillation, first, suppressed by the thermal acoustic oscillation of resonator to combustion chamber diverse location, different frequency being arranged in ad-hoc location, can for different fuel, different outlet acoustic condition causes combustion chamber dynamic characteristic to suppress, secondly, be optimized for traditional combustion room head cover cap, for the restriction of fabrication process condition, the cover cap of traditional combustion room often consumes more cooling-air and cooling effectiveness is not high, this can reduce the air capacity of combustion chamber participation burning on the one hand thus the indirect flame temperature that improves causes more high pollution thing emission level, carbon monoxide emission can be caused in addition on the one hand to control difficulty increase, and the present invention adopts and disperses cooling dome cap and saved the air conditioning quantity of head of combustion chamber, improve cooling effectiveness, cooling-air under saving can Optimizing Combustion chamber interior flame, be conducive to reducing pollutant emission.
Accompanying drawing explanation
Fig. 1 is the front view of the expanding combustion chamber acoustics burner inner liner of the embodiment of the present invention 1;
Fig. 2 is the left view of the expanding combustion chamber acoustics burner inner liner of the embodiment of the present invention 1;
Fig. 3 is the left view of the expanding combustion chamber acoustics burner inner liner of the embodiment of the present invention 2;
Fig. 4 is the left view of the expanding combustion chamber acoustics burner inner liner of the embodiment of the present invention 3;
Fig. 5 is the left view of the expanding combustion chamber acoustics burner inner liner of the embodiment of the present invention 4.
In figure, 1: head nipple hole; 2: burner inner liner cylindrical shell; 3: disperse cooling dome cap; 4: resonator; 21: cooling structure; 22: primary holes; 23: primary holes axis; 31: diffusion cooling hole.
Detailed description of the invention
Below in conjunction with drawings and Examples, embodiments of the present invention are described in further detail.Following examples for illustration of the present invention, but can not be used for limiting the scope of the invention.
In describing the invention, it should be noted that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.Unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.In addition, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
Embodiment 1
As shown in Figure 1, 2, the diffusion burner acoustics burner inner liner of the present embodiment comprises: head nipple hole 1, burner inner liner cylindrical shell 2, combustion chamber cover cap 3 resonator 4.
Head nipple hole 1 is located at the front end of burner inner liner cylindrical shell 2, head nipple hole 1 is for installing nozzle, the open rearward end of burner inner liner cylindrical shell 2 is for connecting changeover portion, and burner inner liner cylindrical shell 2 moves for limited reactions logistics, and burner inner liner cylindrical shell 2 is provided with cooling structure 21 and primary holes 22.
Combustion chamber cover cap 3 is located between head nipple hole 1 and burner inner liner cylindrical shell 2, combustion chamber cover cap 3 is provided with multiple diffusion cooling hole 31, multiple diffusion cooling hole 31 can be uniformly distributed for circumferentially becoming rectangular, resonator 4 is multiple, and multiple resonator 4 to be all located on combustion chamber cover cap 3 and to be tightly connected with the working medium of burner inner liner cylindrical shell 2 inside.This structure by arranging resonator 4 on combustion chamber cover cap 3, resonator 4 is connected with burner inner liner internal working medium by diffusion cooling hole 31, the thermal acoustic oscillation of dissipation combustion chamber diverse location, different frequency, to different fuel, different outlet acoustic condition causes combustion chamber dynamic characteristic to suppress.In addition, the concrete uneven mode of resonator 4 should be selected according to actual conditions, and different layout type is applicable to different chamber structures, different fuel combustion chambers and different outlet acoustic condition.
As shown in Figure 2, in the present embodiment, the radial position of multiple resonator 4 is identical and be uniformly distributed circumferentially.
The diameter of diffusion cooling hole 31 is 0.5mm ~ 1.5mm.The angle of the axis of diffusion cooling hole 31 and the normal direction of combustion chamber cover cap 3 is 45 ° ~ 60 °.
Resonator 4 can be helmholtz resonator or quarter wave resonator.The blanketing frequency scope of resonator 4 at least comprises:
(1) blanketing frequency scope 500Hz ~ 1000Hz;
(2) blanketing frequency scope 1000Hz ~ 2000Hz;
(3) blanketing frequency scope 2000Hz ~ 3000Hz.
Embodiment 2
As shown in Figure 3, the identical and position (mating with primary holes 22 number) of stagger in circumference primary holes 22 or primary holes axis 23, the warp-wise position of multiple resonators 4 of the diffusion burner acoustics burner inner liner of the present embodiment.
Embodiment 3
As shown in Figure 4, multiple resonators 4 of the diffusion burner acoustics burner inner liner of the present embodiment have two kinds of radial positions and the resonator 4 of two kinds of radial positions in circumferential interlaced arrangement.
Embodiment 4
As shown in Figure 5, multiple resonators 4 of the diffusion burner acoustics burner inner liner of the present embodiment have two kinds of radial positions and the resonator 4 of two kinds of radial positions in circumferential interlaced arrangement and the position of stagger primary holes 22 or primary holes axis 23 (mating with primary holes 22 number).
This burner inner liner of diffusion burner acoustics burner inner liner of the present invention has disperses cooling dome cap, and adds a series of resonator dispersing on cooling dome cap, effectively can regulate the frequency of combustion chamber, suppress thermal acoustic oscillation, first, suppressed by the thermal acoustic oscillation of resonator to combustion chamber diverse location, different frequency being arranged in ad-hoc location, can for different fuel, different outlet acoustic condition causes combustion chamber dynamic characteristic to suppress, secondly, be optimized for traditional combustion room head cover cap, for the restriction of fabrication process condition, the cover cap of traditional combustion room often consumes more cooling-air and cooling effectiveness is not high, this can reduce the air capacity of combustion chamber participation burning on the one hand thus the indirect flame temperature that improves causes more high pollution thing emission level, carbon monoxide emission can be caused in addition on the one hand to control difficulty increase, and the present invention adopts and disperses cooling dome cap and saved the air conditioning quantity of head of combustion chamber, improve cooling effectiveness, cooling-air under saving can Optimizing Combustion chamber interior flame, be conducive to reducing pollutant emission.
Embodiments of the invention provide in order to example with for the purpose of describing, and are not exhaustively or limit the invention to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (10)
1. a diffusion burner acoustics burner inner liner, comprise head nipple hole and burner inner liner cylindrical shell, described head nipple hole is located at the front end of described burner inner liner cylindrical shell, described head nipple hole is for installing nozzle, the open rearward end of described burner inner liner cylindrical shell is for connecting changeover portion, described burner inner liner cylindrical shell is used for limited reactions logistics and moves, described burner inner liner cylindrical shell is provided with cooling structure and primary holes, it is characterized in that, also comprise combustion chamber cover cap resonator, described combustion chamber cover cap is located between described head nipple hole and described burner inner liner cylindrical shell, described combustion chamber cover cap is provided with multiple diffusion cooling hole, described resonator is multiple, multiple resonator to be all located on described combustion chamber cover cap and to be tightly connected with the working medium of described burner inner liner inner barrel.
2. diffusion burner acoustics burner inner liner according to claim 1, is characterized in that, the diameter of described diffusion cooling hole is 0.5mm ~ 1.5mm.
3. diffusion burner acoustics burner inner liner according to claim 1, is characterized in that, the angle of the axis of described diffusion cooling hole and the normal direction of described combustion chamber cover cap is 45 ° ~ 60 °.
4. diffusion burner acoustics burner inner liner according to claim 1, is characterized in that, the radial position of multiple resonator is identical and be uniformly distributed circumferentially.
5. diffusion burner acoustics burner inner liner according to claim 1, is characterized in that, the identical and position of the primary holes that staggers in circumference, the warp-wise position of multiple resonator.
6. diffusion burner acoustics burner inner liner according to claim 1, is characterized in that, multiple resonator have two kinds of radial positions and the resonator of two kinds of radial positions in circumferential interlaced arrangement.
7. diffusion burner acoustics burner inner liner according to claim 1, is characterized in that, multiple resonator have two kinds of radial positions and the resonator of two kinds of radial positions in circumferential interlaced arrangement and the position of the primary holes that staggers.
8. according to the diffusion burner acoustics burner inner liner in claim 4-7 described in any one, it is characterized in that, described resonator is helmholtz resonator.
9. according to the diffusion burner acoustics burner inner liner in claim 4-7 described in any one, it is characterized in that, described resonator is quarter wave resonator.
10. according to the diffusion burner acoustics burner inner liner in claim 4-7 described in any one, it is characterized in that, the blanketing frequency scope of described resonator at least comprises blanketing frequency scope 500Hz ~ 1000Hz, blanketing frequency scope 1000Hz ~ 2000Hz and blanketing frequency scope 2000Hz ~ 3000Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510035923.5A CN104595928B (en) | 2015-01-23 | 2015-01-23 | Acoustic flame tube of diffusion combustion chamber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510035923.5A CN104595928B (en) | 2015-01-23 | 2015-01-23 | Acoustic flame tube of diffusion combustion chamber |
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| CN104595928A true CN104595928A (en) | 2015-05-06 |
| CN104595928B CN104595928B (en) | 2020-02-14 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737450A (en) * | 2018-12-11 | 2019-05-10 | 北京航空航天大学 | Combustion chambers burn oscillation control device and combustion chambers burn oscillation control method |
| CN110296440A (en) * | 2018-03-23 | 2019-10-01 | 安萨尔多能源瑞士股份公司 | Gas turbine and method for improving it |
| CN113669759A (en) * | 2021-09-13 | 2021-11-19 | 中国联合重型燃气轮机技术有限公司 | Cap for a gas turbine |
| CN113719861A (en) * | 2021-09-10 | 2021-11-30 | 中国联合重型燃气轮机技术有限公司 | Combustion chamber and gas turbine with same |
| CN113739203A (en) * | 2021-09-13 | 2021-12-03 | 中国联合重型燃气轮机技术有限公司 | Cap assembly for a combustor |
| CN113739202A (en) * | 2021-09-13 | 2021-12-03 | 中国联合重型燃气轮机技术有限公司 | Hood with function of adjusting thermoacoustic oscillation |
| CN115355534A (en) * | 2022-09-05 | 2022-11-18 | 中国联合重型燃气轮机技术有限公司 | Gas turbine fuel mixing system and gas turbine |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296440A (en) * | 2018-03-23 | 2019-10-01 | 安萨尔多能源瑞士股份公司 | Gas turbine and method for improving it |
| CN110296440B (en) * | 2018-03-23 | 2022-07-08 | 安萨尔多能源瑞士股份公司 | Gas turbine and method for improving the same |
| CN109737450A (en) * | 2018-12-11 | 2019-05-10 | 北京航空航天大学 | Combustion chambers burn oscillation control device and combustion chambers burn oscillation control method |
| CN109737450B (en) * | 2018-12-11 | 2019-12-03 | 北京航空航天大学 | Combustion chambers burn oscillation control device and combustion chambers burn oscillation control method |
| CN113719861A (en) * | 2021-09-10 | 2021-11-30 | 中国联合重型燃气轮机技术有限公司 | Combustion chamber and gas turbine with same |
| CN113669759A (en) * | 2021-09-13 | 2021-11-19 | 中国联合重型燃气轮机技术有限公司 | Cap for a gas turbine |
| CN113739203A (en) * | 2021-09-13 | 2021-12-03 | 中国联合重型燃气轮机技术有限公司 | Cap assembly for a combustor |
| CN113739202A (en) * | 2021-09-13 | 2021-12-03 | 中国联合重型燃气轮机技术有限公司 | Hood with function of adjusting thermoacoustic oscillation |
| 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 |
| CN115355534A (en) * | 2022-09-05 | 2022-11-18 | 中国联合重型燃气轮机技术有限公司 | Gas turbine fuel mixing system and gas turbine |
| CN115355534B (en) * | 2022-09-05 | 2024-03-12 | 中国联合重型燃气轮机技术有限公司 | Gas turbine fuel mixing system and gas turbine |
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