CN113739202A - Hood with function of adjusting thermoacoustic oscillation - Google Patents
Hood with function of adjusting thermoacoustic oscillation Download PDFInfo
- Publication number
- CN113739202A CN113739202A CN202111069206.6A CN202111069206A CN113739202A CN 113739202 A CN113739202 A CN 113739202A CN 202111069206 A CN202111069206 A CN 202111069206A CN 113739202 A CN113739202 A CN 113739202A
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- Prior art keywords
- resonators
- peripheral
- hood
- central
- cap
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Classifications
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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
- F23R3/26—Controlling the air flow
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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
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/00013—Reducing thermo-acoustic vibrations by active means
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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
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/03043—Convection cooled combustion chamber walls with means for guiding the cooling air flow
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a hood with the function of adjusting thermoacoustic oscillation, which comprises a hood outer cylinder, a hood panel and a plurality of resonators, wherein the hood outer cylinder is provided with a first end and a second end which are opposite in the length direction, the first end of the hood outer cylinder is provided with a cooling gas inlet, cooling gas is introduced into the hood outer cylinder through the cooling gas inlet and flows along the direction from the first end to the second end, the hood panel is connected to the second end of the hood outer cylinder, the hood panel is provided with a plurality of nozzle channels which penetrate through the hood panel along the thickness direction of the hood panel, nozzles can pass through the nozzle channels, the resonators are arranged on the hood panel, the resonators surround the periphery of the nozzle channels, and the resonators are provided with resonant cavities. The hood with the function of adjusting the thermoacoustic oscillation can perform adaptive shock absorption aiming at different oscillation frequencies of a plurality of nozzle channels, so that the thermoacoustic oscillation frequency of the whole combustion engine is uniformly attenuated, and the service life of the combustion engine is prolonged.
Description
Technical Field
The invention relates to the technical field of combustor equipment, in particular to a hood with a function of adjusting thermoacoustic oscillation.
Background
Conventional gas turbine combustion systems employ multiple combustors for reliable and efficient gas turbine operation. When the combustion of the gas turbine is unstable, a load shedding accident or a trip accident can be caused, more serious conditions can cause the damage of combustion chamber components, and economic loss is caused, and thermoacoustic oscillation in a combustion chamber of the gas turbine is a main reason for unstable combustion of the combustion chamber. In the related art, the mode of arranging the resonator on the combustion chamber or the hood is proposed to adjust the thermoacoustic oscillation, however, in the related art, when the frequency of attenuation required in the combustion chamber is high, the plurality of helmholtz resonant cavities need to be arranged, which affects the gas flow, the cooling effect and the layout in the combustion chamber, while in the related art, the layout of the resonator arranged on the hood is unreasonable, and the suppression effect of the thermoacoustic oscillation is poor.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the invention provides the hood with the function of adjusting the thermoacoustic oscillation, and the hood with the function of adjusting the thermoacoustic oscillation can perform adaptive shock absorption aiming at different oscillation frequencies of a plurality of nozzle channels, so that the thermoacoustic oscillation frequency of the whole combustion engine is uniformly attenuated, and the service life of the combustion engine is prolonged.
The hood with the function of adjusting thermoacoustic oscillation according to the embodiment of the invention comprises: the cooling device comprises a hood outer cylinder, a cooling air inlet and a cooling air outlet, wherein the hood outer cylinder is provided with a first end and a second end which are opposite in the length direction, the first end of the hood outer cylinder is provided with the cooling air inlet, and cooling air is introduced into the hood outer cylinder through the cooling air inlet and flows along the direction from the first end to the second end; the hood panel is connected to the second end of the hood outer cylinder and provided with a plurality of nozzle channels penetrating through the hood panel along the thickness direction of the hood panel, and nozzles can pass through the nozzle channels; the resonators are arranged on the hood panel and surround the periphery of the nozzle channel, and each resonator is provided with a resonant cavity.
According to the hood with the function of adjusting the thermoacoustic oscillation, the plurality of resonators are annularly arranged on the periphery of the nozzle channel, adaptive shock absorption can be performed according to different oscillation frequencies of the plurality of nozzle channels, the thermoacoustic oscillation frequency of the whole combustion engine is uniformly attenuated, the too large thermoacoustic oscillation amplitude in the combustion chamber is avoided, the combustion chamber is stable in structure, and the service life of the combustor is prolonged.
In some embodiments, the nozzle passages include a central nozzle passage and a plurality of peripheral nozzle passages, the plurality of peripheral nozzle passages surrounding an outer periphery of the central nozzle passage, and the plurality of peripheral nozzle passages being spaced circumferentially of the central nozzle passage.
In some embodiments, the resonators include a plurality of central resonators surrounding the periphery of the central nozzle passage and arranged at intervals in the circumferential direction of the central nozzle to constitute a central damper ring, and a plurality of peripheral resonators provided in the circumferential ring of each of the peripheral nozzle passages and arranged at intervals in the circumferential direction of the corresponding peripheral nozzle to constitute a peripheral damper ring.
In some embodiments, the central damping ring is a plurality of central damping rings spaced radially of the central nozzle passage, and the peripheral damping ring is a plurality of peripheral damping rings spaced radially of the corresponding peripheral nozzle passage.
In some embodiments, the number of the plurality of central resonators and the number of the plurality of peripheral resonators are different, and the number of the plurality of central damping rings and the number of the plurality of peripheral damping rings are different.
In some embodiments, the resonator further comprises a plurality of intermediate resonators disposed between the adjacent peripheral nozzle passages, and the plurality of intermediate resonators are spaced apart in a radial direction of the cap panel to constitute an intermediate damper band.
In some embodiments, a plurality of the intermediate damping strips are disposed between adjacent ones of the peripheral nozzle passages, and the plurality of the intermediate damping strips are spaced apart in a circumferential direction of the bonnet panel.
In some embodiments, the hood panel is provided with a plurality of cooling holes arranged at intervals, portions of the plurality of cooling holes correspond to the plurality of resonators, the resonators are arranged at the corresponding cooling holes, and the resonators are cylindrical pieces with two open ends.
In some embodiments, the resonator has an aperture larger than an aperture of the cooling hole.
Drawings
Fig. 1 is a schematic structural diagram of a cap panel of a cap with a function of adjusting thermoacoustic oscillation according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a cap with a function of adjusting thermoacoustic oscillation according to an embodiment of the present invention.
Reference numerals:
a hood 1 with the function of adjusting thermoacoustic oscillation;
a cap outer cylinder 10; a hood panel 20; a nozzle passage 202; a central nozzle passage 2021; peripheral nozzle passages 2022;
a resonator 30; a central resonator 301; a peripheral resonator 302; an intermediate resonator 303.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1-2, a cap 1 with a function of adjusting thermoacoustic oscillations according to an embodiment of the present invention includes a cap outer cylinder 10, a cap panel 20, and a plurality of resonators 30.
Specifically, the cap outer cylinder 10 has opposite first and second ends in its length direction, the first end having a cooling air inlet (not shown) through which cooling air is introduced into the cap outer cylinder 10 and flows in a direction from the first end to the second end (the air flow direction shown in fig. 2).
Further, as shown in fig. 2, a cap panel 20 is attached to the second end of the cap outer cylinder 10, the cap panel 20 having a plurality of nozzle passages 202 penetrating the cap panel 20 in a thickness direction thereof, the nozzle passages 202 allowing nozzles to pass therethrough. It should be noted that the cap in the present application is used for a combustion engine, and the combustion engine feeds fuel into a combustion chamber through a nozzle.
Further, a plurality of resonators 30 are provided on the hood panel 20, and the plurality of resonators 30 surround the outer periphery of the nozzle passage 202, the resonators 30 having resonant cavities.
It should be noted that, for the combustor, as the parameter level is increased, the average temperature in the combustion chamber is also increased, and the risk of thermo-acoustic oscillation in the combustion chamber is also increased, which is likely to cause structural damage to the combustion chamber, and the resonator 30 is arranged to effectively reduce the vibration frequency and suppress the thermo-acoustic oscillation.
In the related art, two resonator setting modes are proposed, one of the two resonator setting modes is arranged in a combustion chamber, the other resonator setting mode is arranged on a hood, when the frequency needing attenuation in the combustion chamber is high, a plurality of Helmholtz resonant cavities need to be arranged aiming at the resonator setting in the combustion chamber, the gas flow, the cooling effect and the layout in the combustion chamber are influenced, and for the resonator setting on the hood, the inventor finds that the layout of the resonator in the related art on the hood can not be adjusted aiming at different oscillation frequencies at different positions, and the damping effect is poor.
Based on the above problem, the present application proposes to set the resonators 30 around the nozzle channel 202, and different numbers of resonators 30 can be arranged in a targeted manner for different vibration frequencies of different nozzle channels 202, so as to satisfy the accurate vibration reduction of different vibration frequencies at different positions.
According to the hood with the function of adjusting the thermoacoustic oscillation, the plurality of resonators are annularly arranged on the periphery of the nozzle channel, adaptive shock absorption can be performed according to different oscillation frequencies of the plurality of nozzle channels, the thermoacoustic oscillation frequency of the whole combustion engine is uniformly attenuated, the too large thermoacoustic oscillation amplitude in the combustion chamber is avoided, the combustion chamber is stable in structure, and the service life of the combustor is prolonged.
Further, as shown in fig. 1, the nozzle passage 202 includes a central nozzle passage 2021 and a plurality of peripheral nozzle passages 2022, the plurality of peripheral nozzle passages 2022 surrounds the periphery of the central nozzle passage 2021, and the plurality of peripheral nozzle passages 2022 are arranged at intervals in the circumferential direction of the central nozzle passage 2021.
Further, as shown in fig. 1, the resonator 30 includes a plurality of central resonators 301 and a plurality of peripheral resonators 302, the plurality of central resonators 301 surrounding the outer periphery of the central nozzle channel 2021, and the plurality of central resonators 301 being arranged at intervals in the circumferential direction of the central nozzle to constitute a central damper ring, the outer peripheral ring of each peripheral nozzle channel 2022 being provided with a plurality of peripheral resonators 302, the plurality of peripheral resonators 302 being arranged at intervals in the circumferential direction of the corresponding peripheral nozzle to constitute a peripheral damper ring.
Further, there are a plurality of central damping rings, which are arranged at intervals in the radial direction of the central nozzle channel 2021, and a plurality of peripheral damping rings, which are arranged at intervals in the radial direction of the corresponding peripheral nozzle channel 2022.
Further, the number of the plurality of central resonators 301 and the number of the plurality of peripheral resonators 302 are different, and the number of the plurality of central damping rings and the number of the plurality of peripheral damping rings are different. Thus, the vibration frequency of the central nozzle passage 2021 and the vibration frequency of the peripheral nozzle passage 2022 are different, and the different numbers of the central resonator 301 and the peripheral resonator 302 can pertinently absorb the vibration at the central nozzle passage 2021 and the vibration at the peripheral nozzle passage 2022.
Further, as shown in fig. 1, the resonator 30 further includes a plurality of intermediate resonators 303, the plurality of intermediate resonators 303 are provided between adjacent peripheral nozzle passages 2022, and the plurality of intermediate resonators 303 are arranged at intervals in the radial direction of the hood panel 20 to constitute an intermediate damper band.
Further, as shown in fig. 1, a plurality of intermediate damper bands are provided between adjacent peripheral nozzle passages 2022, and the plurality of intermediate damper bands are arranged at intervals in the circumferential direction of the hood panel 20.
In some embodiments, as shown in fig. 1, a plurality of cooling holes are disposed on the hood panel 20 at intervals, portions of the plurality of cooling holes correspond to the plurality of resonators 30, the resonators 30 are disposed at the corresponding cooling holes, and the resonators 30 are cylindrical members with both ends open, and the diameters of the resonators 30 are larger than those of the cooling holes. Thus, the arrangement of the resonator 30 does not affect the hood cooling airflow amount.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A hood with the function of adjusting thermoacoustic oscillation is characterized by comprising:
the cooling device comprises a hood outer cylinder, a cooling air inlet and a cooling air outlet, wherein the hood outer cylinder is provided with a first end and a second end which are opposite in the length direction, the first end of the hood outer cylinder is provided with the cooling air inlet, and cooling air is introduced into the hood outer cylinder through the cooling air inlet and flows along the direction from the first end to the second end;
the hood panel is connected to the second end of the hood outer cylinder and provided with a plurality of nozzle channels penetrating through the hood panel along the thickness direction of the hood panel, and nozzles can pass through the nozzle channels;
the resonators are arranged on the hood panel and surround the periphery of the nozzle channel, and each resonator is provided with a resonant cavity.
2. The cap with the function of tuning thermoacoustic oscillations according to claim 1, characterized in that, said nozzle channel comprises a central nozzle channel and a plurality of peripheral nozzle channels, a plurality of said peripheral nozzle channels surrounds the periphery of said central nozzle channel, and a plurality of said peripheral nozzle channels are arranged at intervals in the circumferential direction of said central nozzle channel.
3. The cap having the function of tuning thermoacoustic oscillations according to claim 2, characterized in that said resonators include a plurality of central resonators and a plurality of peripheral resonators, said central resonators surrounding the periphery of said central nozzle channel and being arranged at intervals in the circumferential direction of said central nozzle to constitute a central damping ring, the peripheral ring of each of said peripheral nozzle channels being provided with a plurality of peripheral resonators, said peripheral resonators being arranged at intervals in the circumferential direction of the corresponding peripheral nozzle to constitute a peripheral damping ring.
4. The cap with the function of adjusting thermoacoustic oscillations according to claim 3, characterized in that, said central damping ring is a plurality of, a plurality of said central damping rings are arranged at intervals in the radial direction of said central nozzle channel, and said peripheral damping rings are a plurality of, a plurality of said peripheral damping rings are arranged at intervals in the radial direction of the corresponding said peripheral nozzle channel.
5. The cap with the function of adjusting thermoacoustic oscillations according to claim 4, characterized in that, the number of said plurality of central resonators and said plurality of peripheral resonators is different, and the number of said plurality of central damping rings and said plurality of peripheral damping rings is different.
6. The cap having the function of tuning thermoacoustic oscillations according to claim 4, characterized in that, said resonators further comprise a plurality of intermediate resonators, a plurality of said intermediate resonators being provided between said adjacent peripheral nozzle channels, and a plurality of said intermediate resonators being arranged at intervals in the radial direction of said cap panel to constitute intermediate damping strips.
7. The cap with the function of adjusting thermoacoustic oscillations according to claim 5, characterized in that, a plurality of said intermediate damping strips are provided between adjacent said peripheral nozzle channels, said plurality of said intermediate damping strips being spaced apart in the circumferential direction of said cap panel.
8. The cap with the function of adjusting thermoacoustic oscillations according to claim 1, wherein said cap panel has a plurality of cooling holes spaced apart from each other, the portions of said plurality of cooling holes correspond to said plurality of resonators, said resonators are disposed at the corresponding cooling holes, and said resonators are cylindrical members with two open ends.
9. The cap with the function of regulating thermoacoustic oscillations according to claim 7, characterized in that, the aperture of said resonator is larger than the aperture of said cooling hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111069206.6A CN113739202B (en) | 2021-09-13 | 2021-09-13 | Cap with thermal-acoustic vibration adjusting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111069206.6A CN113739202B (en) | 2021-09-13 | 2021-09-13 | Cap with thermal-acoustic vibration adjusting function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113739202A true CN113739202A (en) | 2021-12-03 |
| CN113739202B CN113739202B (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111069206.6A Active CN113739202B (en) | 2021-09-13 | 2021-09-13 | Cap with thermal-acoustic vibration adjusting function |
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| CN (1) | CN113739202B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472495A (en) * | 2010-04-28 | 2012-05-23 | 西门子公司 | Burner system and method for damping such a burner system |
| CN103453555A (en) * | 2012-05-31 | 2013-12-18 | 通用电气公司 | Combustor with multiple combustion zones |
| CN104595928A (en) * | 2015-01-23 | 2015-05-06 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Acoustic flame tube of diffusion combustion chamber |
| US20180031239A1 (en) * | 2016-07-28 | 2018-02-01 | Allied Power Group, Llc | Combustor cap assembly and methods of manufacture |
| KR20190048907A (en) * | 2017-10-31 | 2019-05-09 | 두산중공업 주식회사 | Fuel nozzle assembly, combustor and gas turbine having the same |
-
2021
- 2021-09-13 CN CN202111069206.6A patent/CN113739202B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472495A (en) * | 2010-04-28 | 2012-05-23 | 西门子公司 | Burner system and method for damping such a burner system |
| CN103453555A (en) * | 2012-05-31 | 2013-12-18 | 通用电气公司 | Combustor with multiple combustion zones |
| CN104595928A (en) * | 2015-01-23 | 2015-05-06 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Acoustic flame tube of diffusion combustion chamber |
| US20180031239A1 (en) * | 2016-07-28 | 2018-02-01 | Allied Power Group, Llc | Combustor cap assembly and methods of manufacture |
| KR20190048907A (en) * | 2017-10-31 | 2019-05-09 | 두산중공업 주식회사 | Fuel nozzle assembly, combustor and gas turbine having the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113739202B (en) | 2023-04-25 |
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