CN113357671B - Gas turbine combustor capable of achieving dual-mode conversion of diffusion and premixed combustion - Google Patents
Gas turbine combustor capable of achieving dual-mode conversion of diffusion and premixed combustion Download PDFInfo
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- CN113357671B CN113357671B CN202010148590.8A CN202010148590A CN113357671B CN 113357671 B CN113357671 B CN 113357671B CN 202010148590 A CN202010148590 A CN 202010148590A CN 113357671 B CN113357671 B CN 113357671B
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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
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
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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
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- Combustion & Propulsion (AREA)
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Abstract
The invention discloses a gas turbine combustor capable of performing diffusion and premixed combustion dual-mode conversion, which comprises a shell and a fuel supply source, wherein the upper end of the shell is circumferentially and symmetrically connected with main fuel nozzles, the upper ends of the main fuel nozzles are connected with the fuel supply source through pipelines, a pipe seat is connected onto the shell between the main fuel nozzles, an on-duty fuel cavity is formed in the pipe seat, and an adjustable conversion device shell is arranged on the lower surface of the pipe seat. This can carry out gas turbine combustor of diffusion and two mode conversions of premixed combustion can make the combustion state of nozzle on duty can switch between diffusion burning and premixed combustion or diffusion burning and partial premixed combustion to the mode that realizes switching is very simple, only need rotate adjustable conversion equipment core to appointed position can, and conventional scheme will realize that the switching of combustion state then need set up multichannel fuel line, and each way pipeline need set up independent valve and control.
Description
Technical Field
The invention relates to the technical field of gas turbine combustors, in particular to a gas turbine combustor capable of performing dual-mode conversion of diffusion and premixed combustion.
Background
With the recent stricter requirements for Nitrogen Oxide (NOX) emissions from gas turbines at home and abroad, a lean premixed combustion method (Dry Low Emission combustion method) in which fuel is mixed with air in advance and then the mixture is combusted to control the final combustion temperature by controlling the equivalence ratio of the fuel in the mixture, thereby suppressing the amount of NOX emissions harmful to the environment, has attracted much attention.
Although premixed combustion has the advantage of low pollution emission, the premixed combustion also has the defect that thermoacoustic oscillation is easily generated due to unstable combustion, and particularly the problem of flameout and the like easily caused under the low-load working condition of a gas turbine. Therefore, the diffusion combustion and the premixed combustion are required to be matched, the diffusion combustion is adopted to ensure stable combustion under the starting or low-load working condition, and the premixed combustion mode is mainly adopted to reduce the emission of NOX when the load is increased. At present, a common mode is that a diffusion combustion nozzle and a premixing combustion nozzle are respectively provided with a corresponding fuel pipeline and a corresponding control valve, and then the opening degree of the corresponding valve is adjusted according to the state of a gas turbine.
In order to solve the problem, it is urgently needed to invent a simple and reliable burner capable of conveniently realizing adjustment of a combustion state.
Disclosure of Invention
The invention aims to provide a gas turbine combustor capable of performing dual-mode conversion of diffusion and premixed combustion, which has the advantage of easiness in switching combustion states and solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a gas turbine combustor capable of performing dual-mode conversion of diffusion and premixed combustion comprises a shell and a fuel supply source, wherein the upper end of the shell is circumferentially and symmetrically connected with main fuel nozzles, the upper end of each main fuel nozzle is connected with the fuel supply source through a pipeline, a pipe seat is connected on the shell between the main fuel nozzles, an on-duty fuel cavity is formed in the pipe seat, an adjustable conversion device shell is installed on the lower surface of the pipe seat, an adjustable conversion device core is installed inside the adjustable conversion device shell, the upper end of the adjustable conversion device core is movably connected with a connecting rod, the connecting rod penetrates through the pipe seat, a sealing ring is connected between the adjustable conversion device core and the adjustable conversion device shell, the lower end of the adjustable conversion device shell is connected with an on-duty diffusion nozzle, the outer side of the lower end of the adjustable conversion device shell is connected with an inner barrel through a porous pressure regulating plate, and the lower surface of the inner barrel is connected with an outer barrel through a main combustion swirler, the lower end of the outer cylinder is connected with a flame tube, the lower end of the on-duty diffusion nozzle is connected with the inner cylinder through an on-duty swirler, the upper end of the on-duty diffusion nozzle is provided with a premixing spray rod annular cavity, the inside of the on-duty diffusion nozzle is provided with a diffusion spray hole chamber, the lower end of the diffusion spray hole chamber is circumferentially provided with diffusion fuel spray holes, the outer side of the premixing spray rod annular cavity is circumferentially connected with an on-duty premixing spray rod, and the on-duty premixing spray rod is provided with premixing spray rod spray holes;
and a premixed gas channel is arranged between the on-duty diffusion nozzle and the inner cylinder.
Preferably, the upper end of the main fuel nozzle is connected to a fuel supply source through a main fuel line, the input end of the on-duty fuel chamber is connected to the fuel supply source through an on-duty fuel line, and the main fuel line and the on-duty fuel line are respectively provided with a main fuel regulating valve and an on-duty fuel regulating valve.
Preferably, the upper end of the adjustable conversion device core is provided with a core diffusion fuel annular inlet, the center of the adjustable conversion device core is provided with a core diffusion fuel channel, one side of the adjustable conversion device core is provided with a core premixing fuel channel, and the lower end of the other side of the adjustable conversion device core is provided with a core premixing spray rod air channel.
Preferably, a shell premixing spray rod air inlet hole and a shell premixing spray rod air outlet hole are respectively formed in the positions, close to the two ends of the core premixing spray rod air channel, of the shell of the adjustable conversion device, and a shell diffusion fuel outlet hole is formed in one end, close to the core diffusion fuel channel, of the shell of the adjustable conversion device.
Preferably, an on-duty flame zone and a main flame zone are arranged in the flame tube, the main flame zone is arranged on the outer side of the on-duty flame zone in the circumferential direction, and a combustion air flow path is arranged between the flame tube and the shell.
Compared with the prior art, the invention has the following beneficial effects:
the gas turbine combustor capable of performing diffusion and premixed combustion dual-mode conversion comprises a combustion air flow path formed by a shell and a flame tube, a main combustor formed by a main combustion swirler and a main fuel nozzle, an on-duty burner formed by an on-duty swirler, an on-duty premixing spray rod, a porous pressure regulating plate and an on-duty diffusion nozzle, an adjustable conversion device core, an adjustable conversion device shell and a connecting rod form an adjustable conversion device, fuel of a fuel supply source is fed into the combustor for combustion through a main fuel regulating valve, an on-duty fuel regulating valve, a main fuel pipeline and an on-duty fuel pipeline respectively, and finally an on-duty flame zone and a main flame zone are formed in an inner cylinder respectively, so that the combustion state of the on-duty nozzle can be switched between diffusion combustion and premixed combustion or between diffusion combustion and partial premixed combustion, and the switching mode is very simple, compared with the conventional multi-valve and multi-pipeline scheme, the invention can realize the switching of each passage between medium fuel and air, namely, when a certain passage of fuel injection hole is not filled with fuel because of switching, the air can be automatically changed into air, so that the position of the injection hole of the nozzle can be prevented from being damaged by high-temperature flame due to flow dead zone.
Drawings
FIG. 1 is a longitudinal cross-sectional view of the present invention;
FIG. 2 is an enlarged view of the nozzle of the present invention;
FIG. 3 is a cross-sectional view of the adjustable switching device of the present invention in a fully diffused mode;
FIG. 4 is a cross-sectional view A-A of the present invention;
FIG. 5 is a cross-sectional view B-B of the present invention;
FIG. 6 is a top view of the adjustable conversion means housing of the present invention;
FIG. 7 is a cross-sectional view of the adjustable transition device of the present invention in a partial premix mode;
FIG. 8 is a cross-sectional view C-C of the present invention;
FIG. 9 is a cross-sectional view of a second tunable switching device in accordance with an embodiment of the present invention in a fully diffused mode;
FIG. 10 is a cross-sectional view taken along line D-D of the present invention;
FIG. 11 is a cross-sectional view of a second adjustable shifting apparatus in a full premix mode in accordance with an embodiment of the present invention;
fig. 12 is a cross-sectional view E-E of the present invention.
In the figure: 9. a fuel supply source; 10. a main fuel regulating valve; 11. an on-duty fuel regulating valve; 12. an on-duty fuel line; 13. a main fuel line; 14. an adjustable conversion device core; 15. an adjustable conversion device housing; 16. a porous pressure regulating plate; 17. a main combustion swirler; 18. a primary fuel nozzle; 19. a swirler on duty; 20. an inner barrel; 21. a on-duty premixing spray rod; 22. an outer cylinder; 23. a housing; 24. a flame tube; 25. a flame area on duty; 26. a primary flame zone; 28. a combustion air flow path; 29. a duty diffusion nozzle; 30. a connecting rod; 35. a tube holder; 36. an on-duty fuel chamber; 37. a core premix fuel passage; 38. a core diffusion fuel annular inlet; 39. a core diffusion fuel passage; 40. the shell is premixed with the air inlet hole of the spray rod; 41. the core body mixes the spray lance air passageway in advance; 42. the shell is provided with an air outlet hole of the premixing spray rod; 43. a shell diffusion fuel outlet; 44. a premixing spray rod ring cavity; 45. a premix spray lance jet orifice; 46. a diffusion fuel injection hole; 47. a premixed gas passage; 48. a diffusion jet orifice chamber; 49. a seal ring; 50. the shell is provided with a premixing spray rod fuel outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-8, a gas turbine combustor capable of performing dual mode switching of diffusion and premixed combustion includes a casing 23 and a fuel supply source 9, main fuel nozzles 18 are symmetrically connected to the upper end of the casing 23 in the circumferential direction, the upper end of the main fuel nozzle 18 is connected to the fuel supply source 9 through a main fuel pipeline 13, the input end of an on duty fuel chamber 36 is connected to the fuel supply source 9 through an on duty fuel pipeline 12, a main fuel regulating valve 10 and an on duty fuel regulating valve 11 are respectively installed on the main fuel pipeline 13 and the on duty fuel pipeline 12, the fuel of the fuel supply source 9 is fed into the combustor through the main fuel regulating valve 10, the on duty fuel regulating valve 11, the main fuel pipeline 13 and the on duty fuel pipeline 12 for combustion, the upper end of the main fuel nozzle 18 is connected to the fuel supply source 9 through a pipe, a pipe seat 35 is connected to the casing 23 between the main fuel nozzles 18, the tube seat 35 is provided with an on-duty fuel chamber 36, the lower surface of the tube seat 35 is provided with an adjustable conversion device shell 15, the interior of the adjustable conversion device shell 15 is provided with an adjustable conversion device core 14, the upper end of the adjustable conversion device core 14 is provided with a core diffusion fuel annular inlet 38, the center of the adjustable conversion device core 14 is provided with a core diffusion fuel channel 39, one side of the adjustable conversion device core 14 is provided with a core premixing fuel channel 37, the lower end of the other side of the adjustable conversion device core 14 is provided with a core premixing spray rod air channel 41, the upper end of the adjustable conversion device core 14 is movably connected with a connecting rod 30, the connecting rod 30 penetrates through the tube seat 35, the adjustable conversion device core 14, the adjustable conversion device shell 15 and the connecting rod 30 form an adjustable conversion device, and a sealing ring 49 is connected between the adjustable conversion device core 14 and the adjustable conversion device shell 15, prevent the fuel in the on duty fuel chamber 36 from leaking into other pore channels along the circumferential gap, the lower end of the adjustable conversion device shell 15 is connected with the on duty diffusion nozzle 29, the positions of the adjustable conversion device shell 15 close to the two ends of the core body premixing spray rod air passage 41 are respectively provided with a shell body premixing spray rod air inlet hole 40 and a shell body premixing spray rod air outlet hole 42, one end of the adjustable conversion device shell 15 close to the core body diffusion fuel passage 39 is provided with a shell body diffusion fuel outlet hole 43, the outer side of the lower end of the adjustable conversion device shell 15 is connected with an inner cylinder 20 through a porous pressure regulating plate 16, the lower surface of the inner cylinder 20 is connected with an outer cylinder 22 through a main combustion swirler 17, the main combustion swirler 17 and a main burner formed by a main fuel nozzle 18, the lower end of the outer cylinder 22 is connected with a flame tube 24, an on duty flame zone 25 and a main flame zone 26 are arranged in the flame tube 24, the main flame zone 26 is arranged at the circumferential outer side of the on duty flame zone 25, a combustion air flow path 28 is arranged between the flame tube 24 and the shell 23, the lower end of the on-duty diffusion nozzle 29 is connected with the inner tube 20 through the on-duty swirler 19, a premixing spray rod annular cavity 44 is formed in the upper end of the on-duty diffusion nozzle 29, the on-duty swirler 19, the on-duty premixing spray rod 21, the porous pressure regulating plate 16 and the on-duty diffusion nozzle 29 form the on-duty combustor, a premixing air passage 47 is arranged between the on-duty diffusion nozzle 29 and the inner tube 20, a diffusion spray hole cavity 48 is formed in the on-duty diffusion nozzle 29, a diffusion fuel spray hole 46 is formed in the circumferential direction of the lower end of the diffusion spray hole cavity 48, the on-duty premixing spray rod 21 is connected to the outer side of the premixing spray rod annular cavity 44 in the circumferential direction, and a premixing spray rod spray hole 45 is formed in the on-duty spray rod 21.
The working process comprises the following steps: in the full diffusion mode, fuel enters from the on-duty fuel chamber 36 through the core diffusion fuel annular inlet 38, flows through the core diffusion fuel channel 39 and the shell diffusion fuel outlet 43, finally enters the diffusion jet hole chamber 48 corresponding to the on-duty diffusion nozzle 29, and is ejected from the diffusion fuel jet holes 46 to form diffusion combustion. Part of air in the air flow path 28 for combustion flows from the shell premixing spray rod air inlet hole 40 to the core premixing spray rod air passage 41, then passes through the shell premixing spray rod air outlet hole 42, finally enters the premixing spray rod annular cavity 44 corresponding to the on-duty diffusion nozzle 29 and flows out from the premixing spray rod injection hole 45, and at the moment, the core premixing fuel passage 37 is not communicated with the outlet hole on the adjustable conversion device shell 15 and is in a blocking state; in the partial premixing mode, the core 14 of the adjustable switching device can be switched to the partial premixing mode by rotating 90 degrees clockwise, in the partial premixing mode, a part of fuel still enters from the on duty fuel chamber 36 through the core diffusion fuel annular inlet 38, flows through the core diffusion fuel passage 39 and the shell diffusion fuel outlet 43, finally enters the diffusion jet hole chamber 48 corresponding to the on duty diffusion nozzle 29 and is ejected from the diffusion fuel jet hole 46 to form diffusion combustion, a part of fuel enters from the on duty fuel chamber 36 through the core premixing fuel passage 37, flows through the shell premixing jet rod fuel outlet 50, then enters the premixing jet rod annular cavity 44 corresponding to the on duty diffusion nozzle 29, flows out from the premixing jet rod 45 to the premixing gas passage 47 to be mixed with air, finally form premixed combustion, and the overall on duty diffusion nozzle 29 has two paths of fuel, one route of the center is diffused and combusted through the diffusion fuel injection hole 46, the other route of the center is premixed and combusted through the outflow of the premixed gas channel 47, so that the whole on-duty combustor is in a partial premixed and combusted state, fuel is always sprayed out from the diffusion fuel injection hole 46 to maintain diffusion and combustion in the combustion mode switching process, and combustion stability can be guaranteed.
The second embodiment:
referring to fig. 9-12, in this embodiment, a core center diffusion fuel channel and a core center diffusion air channel are disposed on the adjustable conversion device core 14 instead of the core diffusion fuel channel 39 and the core premix fuel channel 37, respectively, and correspondingly, the bottom of the adjustable conversion device shell 15 is provided with a shell center diffusion fuel outlet and a shell center diffusion air outlet corresponding thereto, and the side thereof is provided with a shell center diffusion air inlet corresponding thereto.
The working process comprises the following steps: in a complete diffusion mode, fuel enters from the on-duty fuel chamber 36 through the core body diffusion fuel annular inlet 38, flows through the core body center diffusion fuel channel and the shell body center diffusion fuel outlet, finally enters the diffusion jet hole chamber 48 corresponding to the on-duty diffusion nozzle 29 and is jetted out from the diffusion fuel jet hole 46 to form diffusion combustion, part of air in the combustion air flow path 28 flows from the shell body premixing jet rod air inlet hole 40 to the core body premixing jet rod air channel 41, then passes through the shell body premixing jet rod air outlet hole 42, finally enters the premixing jet rod annular cavity 44 corresponding to the on-duty diffusion nozzle 29 and flows out from the premixing jet rod jet hole 45, and at the moment, the core body center diffusion air channel is not communicated with the outlet hole in the adjustable conversion device shell body 15 and is in a blocking state; when in the complete diffusion mode, the core body 14 of the adjustable conversion device is rotated 90 degrees in the counterclockwise direction to switch the on-duty complete pre-mixing mode, fuel enters from the on-duty fuel chamber 36 through the core body pre-mixing spray rod fuel channel, flows through the shell pre-mixing spray rod fuel outlet 50, then enters the pre-mixing spray rod annular cavity 44 corresponding to the on-duty diffusion nozzle 29, flows out from the pre-mixing spray rod injection hole 45 to the pre-mixing air channel 47 in fig. 3 to be mixed with air, and finally premixed combustion is formed, part of air in the combustion air flow path 28 flows from the central diffusion air inlet hole on the side surface of the shell to the core body central diffusion air channel, then flows through the shell central diffusion air outlet hole, finally enters the diffusion injection hole chamber 48 corresponding to the on-duty diffusion nozzle 29 to be ejected from the diffusion fuel injection hole 46 to cool the protection nozzle, because the shell central diffusion fuel outlet hole on the shell 15 of the adjustable conversion device is a specially designed annular hole, the fuel flow to the diffusion orifice chamber 48 is continuously varied during the rotational switching of the adjustable switching device core 14, which ensures smooth fuel variation during the switching from full diffusion to full premix mode, and prevents unstable combustion due to fuel interruption or sudden flow change.
In conclusion: the gas turbine combustor capable of carrying out dual-mode conversion of diffusion and premixed combustion comprises a combustion air flow path 28 formed by a shell 23 and a flame tube 24, a main combustor formed by a main combustion swirler 17 and a main fuel nozzle 18, an on-duty combustor formed by an on-duty swirler 19, an on-duty premixing spray rod 21, a porous pressure regulating plate 16 and an on-duty diffusion nozzle 29, an adjustable conversion device formed by an adjustable conversion device core 14, an adjustable conversion device shell 15 and a connecting rod 30, wherein fuel of a fuel supply source 9 is respectively fed into the combustor for combustion through a main fuel regulating valve 10, an on-duty fuel regulating valve 11, a main fuel pipeline 13 and an on-duty fuel pipeline 12, and finally an on-duty flame zone 25 and a main flame zone 26 are respectively formed in an inner tube 20, so that the combustion state of the on-duty nozzle can be switched between diffusion combustion and premixed combustion or between diffusion combustion and partial premixed combustion, compared with the conventional multi-valve and multi-pipeline scheme, the invention can realize the switching of each passage between medium fuel and air, namely, when a certain passage of fuel injection hole is not communicated with fuel because of switching, the air can be automatically changed into air, so that the position of the injection hole of the nozzle can be prevented from being damaged by high-temperature flame due to flow dead zone.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. Gas turbine combustor capable of dual mode transition for diffusion and premixed combustion, comprising a housing (23) and a fuel supply (9), characterized in that: the upper end circumference symmetry of shell (23) is connected with main fuel nozzle (18), the upper end of main fuel nozzle (18) is connected with fuel supply source (9) through the pipe connection, be connected with tube socket (35) on shell (23) between main fuel nozzle (18), on duty fuel cavity (36) has been seted up on tube socket (35), the lower surface mounting of tube socket (35) has adjustable conversion equipment casing (15), adjustable conversion equipment core (14) has been installed to the inside of adjustable conversion equipment casing (15), the upper end swing joint of adjustable conversion equipment core (14) has connecting rod (30), connecting rod (30) run through tube socket (35), be connected with sealing ring (49) between adjustable conversion equipment core (14) and the adjustable conversion equipment casing (15), the lower extreme of adjustable conversion equipment casing (15) is connected with on duty diffusion nozzle (29), the outside of adjustable conversion equipment casing (15) lower extreme is connected with inner tube (20) through porous pressure regulating board (16), the lower surface of the inner cylinder (20) is connected with an outer cylinder (22) through a main combustion swirler (17), the lower end of the outer cylinder (22) is connected with a flame tube (24), the lower end of the on-duty diffusion nozzle (29) is connected with the inner cylinder (20) through a circumferential on-duty swirler (19), a premixing spray rod ring cavity (44) is formed in the upper end of the on-duty diffusion nozzle (29), a diffusion spray hole cavity (48) is formed in the on-duty diffusion nozzle (29), diffusion fuel spray holes (46) are formed in the circumferential direction of the lower end of the diffusion spray hole cavity (48), a plurality of on-duty premixing spray rods (21) are circumferentially connected to the outer side of the premixing spray rod ring cavity (44), and premixing spray rod spray holes (45) are formed in the on-duty premixing spray rod (21);
and a premixed gas channel (47) is arranged between the on-duty diffusion nozzle (29) and the inner barrel (20).
2. The gas turbine combustor capable of two-mode transition of diffusion and premixed combustion of claim 1, wherein: the upper end of the main fuel nozzle (18) is connected with a fuel supply source (9) through a main fuel pipeline (13), the input end of the on-duty fuel chamber (36) is connected with the fuel supply source (9) through an on-duty fuel pipeline (12), and a main fuel regulating valve (10) and an on-duty fuel regulating valve (11) are respectively installed on the main fuel pipeline (13) and the on-duty fuel pipeline (12).
3. The gas turbine combustor capable of dual mode transition of diffusion and premixed combustion of claim 1, wherein: the upper end of the adjustable conversion device core body (14) is provided with a core body diffusion fuel annular inlet (38), the center of the adjustable conversion device core body (14) is provided with a core body diffusion fuel channel (39), one side of the adjustable conversion device core body (14) is provided with a core body premixing fuel channel (37), and the lower end of the other side of the adjustable conversion device core body (14) is provided with a core body premixing spray rod air channel (41).
4. The gas turbine combustor capable of two-mode transition of diffusion and premixed combustion of claim 1, wherein: the adjustable conversion device shell (15) is provided with a shell premixing spray rod air inlet hole (40) and a shell premixing spray rod air outlet hole (42) at positions close to two ends of the core premixing spray rod air channel (41), and the adjustable conversion device shell (15) is provided with a shell diffusion fuel outlet hole (43) at one end close to the core diffusion fuel channel (39).
5. The gas turbine combustor capable of dual mode transition of diffusion and premixed combustion of claim 1, wherein: an on-duty flame zone (25) and a main flame zone (26) are arranged in the flame tube (24), the main flame zone (26) is arranged on the outer side of the on-duty flame zone (25) in the circumferential direction, and a combustion air flow path (28) is arranged between the flame tube (24) and the shell (23).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010148590.8A CN113357671B (en) | 2020-03-05 | 2020-03-05 | Gas turbine combustor capable of achieving dual-mode conversion of diffusion and premixed combustion |
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| CN202010148590.8A CN113357671B (en) | 2020-03-05 | 2020-03-05 | Gas turbine combustor capable of achieving dual-mode conversion of diffusion and premixed combustion |
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| CN113357671B true CN113357671B (en) | 2022-07-15 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5435126A (en) * | 1994-03-14 | 1995-07-25 | General Electric Company | Fuel nozzle for a turbine having dual capability for diffusion and premix combustion and methods of operation |
| US5590529A (en) * | 1994-09-26 | 1997-01-07 | General Electric Company | Air fuel mixer for gas turbine combustor |
| JPH0933010A (en) * | 1995-07-17 | 1997-02-07 | Hitachi Ltd | Gas turbine combustor and premixture fuel control method therefor |
| JP2010266160A (en) * | 2009-05-18 | 2010-11-25 | Dainichi Co Ltd | Combustion device |
| CN104180397B (en) * | 2014-07-25 | 2018-06-12 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | It is pre-mixed nozzle on duty |
| CN207702461U (en) * | 2017-11-02 | 2018-08-07 | 上海华之邦科技股份有限公司 | The novel super-low nitrogen combustion apparatus that a kind of non-premixed combustion and premixed combustion are combined |
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Address after: No. 357, Shiqiao Road, Xiacheng District, Hangzhou, Zhejiang 310000 Patentee after: Hangzhou Steam Turbine Holding Co.,Ltd. Patentee after: Zhejiang Gas Turbine Machinery Co.,Ltd. Patentee after: Hangzhou Turbine Power Group Co.,Ltd. Address before: No. 357, Shiqiao Road, Xiacheng District, Hangzhou, Zhejiang 310000 Patentee before: HANGZHOU TURBINE POWER GROUP CO.,LTD. Patentee before: Zhejiang Chuang Turbine Machinery Co.,Ltd. Patentee before: HANGZHOU STEAM TURBINE Co.,Ltd. |