CN113357671A - Gas turbine combustor capable of performing dual-mode conversion of diffusion and premixed combustion - Google Patents
Gas turbine combustor capable of performing dual-mode conversion of diffusion and premixed combustion Download PDFInfo
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- CN113357671A CN113357671A CN202010148590.8A CN202010148590A CN113357671A CN 113357671 A CN113357671 A CN 113357671A CN 202010148590 A CN202010148590 A CN 202010148590A CN 113357671 A CN113357671 A CN 113357671A
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- diffusion
- fuel
- duty
- conversion device
- shell
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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
Abstract
The invention discloses a gas turbine combustor capable of performing dual-mode conversion of diffusion and premixed combustion, 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 on 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 part premixed combustion to the mode of realizing switching is very simple, only need rotate adjustable conversion equipment core to appointed position can, and conventional scheme need 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, the common mode is that corresponding fuel pipelines and control valves are respectively arranged on a diffusion combustion nozzle and a premixing combustion nozzle, 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 easy switching of 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 extreme of urceolus is connected with the flame tube, the lower extreme of diffusion nozzle on duty is connected with the inner tube through swirler on duty, and the diffusion nozzle ring chamber has been seted up to diffusion nozzle on duty upper end, and diffusion jet orifice cavity has been seted up to diffusion nozzle on duty's inside, and diffusion fuel jet orifice has been seted up to diffusion jet orifice cavity lower extreme circumference, and the outside circumference of premixing nozzle ring chamber is connected with the premixing spray lance on duty, has seted up the premixing spray lance jet orifice on the premixing spray lance on duty.
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, the flame tube is provided with an on-duty flame zone and a main flame zone, the main flame zone is located outside the on-duty flame zone in the circumferential direction, and a combustion air flow path is provided between the flame tube and the casing.
Preferably, a premixed gas channel is arranged between the on-duty diffusion nozzle and the inner barrel.
Compared with the prior art, the invention has the following beneficial effects:
the gas turbine combustor capable of carrying out dual-mode conversion of diffusion and premixed combustion 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 formed by an adjustable conversion device core body, an adjustable conversion device shell body and a connecting rod, wherein fuel of a fuel supply source is respectively fed into the combustor through a main fuel regulating valve, an on-duty fuel regulating valve, a main fuel pipeline and an on-duty fuel pipeline for combustion, and finally an on-duty flame zone and a main flame zone are respectively formed in an inner tube, 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, 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 due to switching, the passage of air can be automatically changed, so that the phenomenon that the position of the injection hole of the nozzle is damaged by high-temperature flame due to a flow dead zone can be avoided.
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 transition device in a fully premixed 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. a fuel regulating valve on duty; 12. a fuel line on duty; 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 premixing spray rod on duty; 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 is premixed with the air channel of the spray rod; 42. the shell is provided with a premixing spray rod air outlet; 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 premixed boom 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 conversion of diffusion and premixed combustion includes a casing 23 and a fuel supply source 9, the upper end of the casing 23 is circumferentially and symmetrically connected with a main fuel nozzle 18, the upper end of the main fuel nozzle 18 is connected with the fuel supply source 9 through a main fuel pipeline 13, the input end of an on-duty fuel chamber 36 is connected with the fuel supply source 9 through an on-duty fuel pipeline 12, the main fuel pipeline 13 and the on-duty fuel pipeline 12 are respectively provided with a main fuel regulating valve 10 and an on-duty fuel regulating valve 11, the fuel of the fuel supply source 9 is fed into the combustor for combustion 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, the upper end of the main fuel nozzle 18 is connected with the fuel supply source 9 through a pipeline, 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 premixing spray rod air passage 41 are respectively provided with a shell premixing spray rod air inlet hole 40 and a shell premixing spray rod air outlet hole 42, one end of the adjustable conversion device shell 15 close to the core premixing fuel passage 39 is provided with a shell diffusion fuel outlet hole 43, the outer side of the lower end of the adjustable conversion device shell 15 is connected with the inner cylinder 20 through the porous pressure regulating plate 16, the lower surface of the inner cylinder 20 is connected with the outer cylinder 22 through the main combustion swirler 17, the main burner composed of the main combustion swirler 17 and the main fuel nozzle 18, the lower end of the outer cylinder 22 is connected with the flame tube 24, the on-duty flame zone 25 and the 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, the 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, the upper end of the on-duty diffusion nozzle 29 is provided with a premixing spray rod annular cavity 44, 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 arranged inside the on-duty diffusion nozzle 29, diffusion fuel spray holes 46 are arranged on the circumferential direction of the lower end of the diffusion spray hole cavity 48, the outer side of the premixing spray rod annular cavity 44 is circumferentially connected with the on-duty premixing spray rod 21, and the premixing spray rod spray holes 45 are arranged on the on-duty spray rod 21.
The working process is as follows: 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 passage 39, the shell diffusion fuel outlet 43, and finally enters the diffusion injection hole chamber 48 corresponding to the on-duty diffusion nozzle 29 to be injected from the diffusion fuel injection hole 46 for diffusion combustion. Part of air in the combustion air flow path 28 flows from the casing premixing spray rod air inlet hole 40 to the core premixing spray rod air passage 41, then passes through the casing premixing spray rod air outlet hole 42, finally enters the premixing spray rod annular cavity 44 corresponding to the diffusion nozzle 29 on duty, 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 casing 15 and is in a blocking state; in the partial premixing mode, the core 14 of the adjustable switching device can be switched into 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 injection hole chamber 48 corresponding to the on-duty diffusion nozzle 29 and is ejected by the diffusion fuel injection 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 spray rod fuel outlet 50, enters the premixing spray rod annular cavity 44 corresponding to the on-duty diffusion nozzle 29, flows out from the premixing spray rod injection hole 45 to the premixing air passage 47 to be mixed with air, finally form premixed combustion, and the on-duty diffusion nozzle 29 always has two paths of fuel, one route of the center is diffused and burnt by the diffusion fuel injection hole 46, and the other route is premixed and burnt by the outflow of the premixed gas channel 47, so that the whole on-duty combustor is in a partial premixed and burnt state, and the diffusion fuel injection hole 46 always has fuel to be injected to maintain diffusion and burning in the combustion mode switching process, thereby ensuring stable burning.
Example two:
referring to fig. 9-12, in the present 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 accordingly, the bottom of the adjustable conversion device shell 15 is formed with a shell center diffusion fuel outlet and a shell center diffusion air outlet corresponding thereto, and the side thereof is formed with a shell center diffusion air inlet corresponding thereto.
The working process is as follows: in the complete diffusion mode, fuel enters from the on-duty fuel chamber 36 through the core diffusion fuel annular inlet 38, flows through the core center diffusion fuel channel and the shell center diffusion fuel outlet, finally enters the diffusion jet hole chamber 48 corresponding to the on-duty diffusion nozzle 29 and is jetted 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 premixing spray rod air inlet hole 40 to the core premixing spray rod air channel 41, then passes through the shell premixing spray rod air outlet hole 42 and 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 jet hole 45, and at the moment, the core center diffusion air channel is not communicated with the outlet hole on the adjustable conversion device shell 15 and is in a blocking state; in the complete diffusion mode, the core 14 of the adjustable conversion device is rotated 90 degrees counterclockwise to switch the on-duty complete premixing mode, fuel enters from the on-duty fuel chamber 36 through the core premixing spray rod fuel passage, flows through the shell premixing spray rod fuel outlet 50, enters the premixing spray rod annular cavity 44 corresponding to the on-duty diffusion nozzle 29, flows out from the premixing spray rod injection hole 45 to the premixing air passage 47 of fig. 3 to be mixed with air, 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 shell side to the core central diffusion air passage, then passes through the shell central diffusion air outlet, finally enters the diffusion 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 on the adjustable conversion device shell 15 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 summary, the following steps: 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, the mode of realizing the switching is very simple, only need rotate the adjustable switching device core 14 to the appointed position, and the conventional scheme needs to set up the multiple fuel pipe line in order to realize the switching of the combustion state, and each pipeline needs to set up the single valve to control, the fuel control system design is relatively complicated too much, compared with the conventional multiple valve multiple pipe line scheme, the invention can realize the switching between medium fuel and air of each route, namely can change into the air automatically when the fuel jet orifice of a certain route is obstructed because of switching, in this way, can avoid the position of the jet orifice of the nozzle to flow the dead zone and be destroyed by the high-temperature flame.
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 (6)
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 of the shell (23) is circumferentially and symmetrically connected with main fuel nozzles (18), the upper end of each main fuel nozzle (18) is connected with a fuel supply source (9) through a pipeline, a pipe seat (35) is connected on the shell (23) between the main fuel nozzles (18), an on-duty fuel chamber (36) is formed in the pipe seat (35), an adjustable conversion device shell (15) is installed on the lower surface of the pipe seat (35), an adjustable conversion device core body (14) is installed inside the adjustable conversion device shell (15), a connecting rod (30) is movably connected at the upper end of the adjustable conversion device core body (14), the connecting rod (30) penetrates through the pipe seat (35), a sealing ring (49) is connected between the adjustable conversion device core body (14) and the adjustable conversion device shell body (15), the lower end of the adjustable conversion device shell body (15) is connected with an on-duty diffusion nozzle (29), the outer side of the lower end of the adjustable conversion device shell body (15) is connected with an inner barrel (20) through a porous pressure regulating plate (16), the lower surface of inner tube (20) is connected with urceolus (22) through burning swirler (17) mainly, and the lower extreme of urceolus (22) is connected with flame tube (24), the lower extreme of diffusion nozzle on duty (29) is connected with inner tube (20) through circumference swirler on duty (19), and premixed spray lance ring chamber (44) have been seted up to diffusion nozzle on duty (29) upper end, and diffusion jet orifice cavity (48) have been seted up to the inside of diffusion nozzle on duty (29), and diffusion fuel jet orifice (46) have been seted up to diffusion jet orifice cavity (48) lower extreme circumference, and the outside circumferential connection of premixing spray lance ring chamber (44) has many premixed spray lance on duty (21), has seted up premixed spray lance jet orifice (45) on the premixed spray lance (21) on duty.
2. The gas turbine combustor capable of dual 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 an 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 dual 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).
6. The gas turbine combustor capable of dual mode transition of diffusion and premixed combustion of claim 1, wherein: and a premixed gas channel (47) is arranged between the on-duty diffusion nozzle (29) and the inner barrel (20).
Priority Applications (1)
| 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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| 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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Citations (6)
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|---|---|---|---|---|
| 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 |
| CN104180397A (en) * | 2014-07-25 | 2014-12-03 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Pre-mixing on-duty nozzle |
| 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 |
-
2020
- 2020-03-05 CN CN202010148590.8A patent/CN113357671B/en active Active
Patent Citations (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 |
| CN104180397A (en) * | 2014-07-25 | 2014-12-03 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Pre-mixing on-duty nozzle |
| 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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| Publication number | Publication date |
|---|---|
| CN113357671B (en) | 2022-07-15 |
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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. |