CN112781043A - Supersonic gas jet low-nitrogen burner - Google Patents
Supersonic gas jet low-nitrogen burner Download PDFInfo
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- CN112781043A CN112781043A CN202110133793.4A CN202110133793A CN112781043A CN 112781043 A CN112781043 A CN 112781043A CN 202110133793 A CN202110133793 A CN 202110133793A CN 112781043 A CN112781043 A CN 112781043A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
- F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
The invention discloses a supersonic gas jet low-nitrogen combustor which comprises a main body, a primary gas pipeline, a primary combustion-supporting air rotational flow flame stabilizing structure, a secondary combustion-supporting air isolating device, a combustion cylinder, peripheral gas pipelines, peripheral supersonic gas nozzles and a secondary gas injection device, wherein the combustion cylinder is fixed on the right side of the main body; the invention relates to a supersonic gas jet low-nitrogen combustor which sprays supersonic gas through a peripheral supersonic gas nozzle to a hearth to entrain a part of flue gas so as to reduce the density of the flue gas in unit volume, and the high-speed gas flow quickly disperses combustion heat to reduce NO in the flue gasXThe purpose of (1).
Description
Technical Field
The invention relates to the technical field of combustors, in particular to a supersonic gas jet low-nitrogen combustor.
Background
The ultra-low nitrogen combustor for reducing nitrogen oxide emission is in line with the requirement of national call for improving the quality of ambient air, and recent detection data show that the PM2.5 in a typical characteristic pollution area has larger overproof proportion and regional long-time serious overproof condition, so that the improvement of the quality of the ambient air faces huge challenges
At present, in a gas burner sold on the market, nitrogen oxides are discharged mostly at about 80mg under the condition of not adding flue gas external circulation, gas and combustion-supporting air of the gas burner are distributed in a grading combustion mode, the optimal grading combustion effect is not achieved, the oxygen concentration of the combustion-supporting air can be reduced only by means of the flue gas external circulation to achieve low-nitrogen discharge, only a few companies adopt flue gas internal circulation at present and are influenced by a boiler, the effect is not stable, the gas injection speed is low, the entrainment flue gas quantity is small, the gas is easy to gather and burn, a high-temperature area is caused, and thermal nitrogen oxides are generated.
Disclosure of Invention
The invention aims to provide a supersonic gas jet low-nitrogen combustor which has the advantages of supersonic jet of combustible gas, adjustable jet angle, changeable nozzle matching mode and changeable flame stabilizing structure. Through high-speed jet gas, partial smoke is sucked, a combustion area is lengthened, heat accumulation caused by gathering combustion is reduced to form a combustion high-temperature area, and thermal NO is reducedXAnd (5) discharging. More reasonable staged combustion design of fuel gas and combustion-supporting air achieves the aims of preventing combustion heat from being concentrated on the design structure, ensuring the temperature of a reaction zone to be overhigh and reducing NOXThe purpose of discharging.
In order to achieve the purpose, the invention provides the following technical scheme: a supersonic gas jet low-nitrogen burner comprises a main body, a primary gas pipeline, a primary combustion-supporting air rotational flow flame stabilizing structure, a secondary combustion-supporting air isolating device, a combustion cylinder, a peripheral gas pipeline, a peripheral supersonic gas nozzle, a blunt disk flame stabilizing structure, a gas nozzle, a primary gas channel, a primary combustion-supporting air channel, a secondary combustion-supporting air channel and a peripheral gas channel, wherein the right side of the main body is fixed with the combustion cylinder, the middle of the combustion cylinder is provided with the primary gas pipeline, the outer side of the primary gas pipeline is provided with the primary combustion-supporting air rotational flow flame stabilizing structure, the outer side of the primary combustion-supporting air rotational flow flame stabilizing structure is provided with the secondary combustion-supporting air isolating device, the secondary combustion-supporting air isolating device is arranged at the inner side of the combustion cylinder, the outer side of the combustion cylinder is provided with the peripheral gas pipeline, the peripheral gas pipeline penetrates through the, the primary combustion gas pipeline is internally provided with a primary combustion gas channel, a primary combustion air channel is arranged between the secondary combustion air isolating device and the primary combustion gas pipeline, a secondary combustion air channel is arranged between the secondary combustion air isolating device and the combustion cylinder, and peripheral combustion gas channels are arranged on the inner sides of the peripheral combustion gas pipelines.
Preferably, the primary combustion-supporting air channel and the secondary combustion-supporting air channel both penetrate through the main body.
Preferably, the primary combustion-supporting air cyclone flame-stabilizing structure can be replaced by a blunt-disk flame-stabilizing structure.
Preferably, a group of secondary gas injection devices are arranged in the secondary combustion air channel, a peripheral supersonic gas nozzle is fixed on the right side of each secondary gas injection device, the peripheral supersonic gas nozzle can be completely or partially replaced by a gas nozzle, and the gas nozzle is in an inclined type.
Preferably, the peripheral supersonic gas nozzle can be replaced by a gas nozzle completely or partially, and the gas nozzle is in an inclined type.
Preferably, a secondary gas channel is arranged on the inner side of the secondary gas injection device.
Compared with the prior art, the invention has the following beneficial effects:
1. the supersonic gas jet low-nitrogen combustor sprays supersonic combustible gas through the peripheral supersonic gas spray heads, when the high-flow-rate combustible gas is injected into the flue gas, a part of the flue gas is entrained, the combustible gas is diluted, the density of the combustible gas is reduced, the heat released by the combustible gas in the same unit volume is dispersed, the local heat collection of combustion heat is reduced, and the generation of thermal nitrogen oxide is reduced.
Drawings
FIG. 1 is a schematic view of a preferred configuration of a supersonic gas jet low-nitrogen combustor according to the present invention;
FIG. 2 is a schematic view of an alternative structure of a supersonic gas jet low-nitrogen combustor according to the present invention
FIG. 3 is a schematic view of a gas burner head of a supersonic gas jet low-nitrogen burner of the present invention;
FIG. 4 is a schematic front view of a blunt-disk flame-stabilizing structure of a supersonic gas jet low-nitrogen burner according to the present invention;
FIG. 5 is a schematic side view of a blunt disk flame holding structure of a supersonic gas jet low-nitrogen burner according to the present invention;
FIG. 6 is a schematic view of the peripheral supersonic gas burner head of the supersonic gas jet low-NOx burner of the present invention;
FIG. 7 is a schematic diagram of the operation of a supersonic gas jet low-nitrogen burner of the present invention.
The figures are labeled as follows: the device comprises a primary gas pipeline 1, a primary combustion-supporting air cyclone flame stabilizing structure 2, a combustion barrel 3, a supersonic gas nozzle at the periphery of 4, a peripheral gas pipeline 5, a secondary combustion-supporting air isolating device 6, a secondary gas injection device 7, a blunt disc flame stabilizing structure 8, a gas nozzle 9, a primary gas channel 10, a primary combustion-supporting air channel 11, a secondary combustion-supporting air channel 12, a peripheral gas channel 13, a secondary gas channel 14 and a main body 15.
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 embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1:
referring to fig. 1, 3 and 6, a supersonic gas jet low-nitrogen burner comprises a main body 15, a primary gas pipeline 1, a secondary combustion-supporting air isolating device 6, a combustion cylinder 3, a peripheral gas pipeline 5, a peripheral supersonic gas nozzle 4, a gas nozzle 9, a primary combustion-supporting air swirling flame stabilizing structure 2, a primary gas channel 10, a primary combustion-supporting air channel 11, a secondary combustion-supporting air channel 12 and a peripheral gas channel 13, wherein the right side of the main body 15 is fixed with the combustion cylinder 3, the middle of the combustion cylinder 3 is provided with the primary gas pipeline 1, the outer side of the primary gas pipeline 1 is provided with the primary combustion-supporting air swirling flame stabilizing structure 2, the outer side of the primary combustion-supporting air swirling flame stabilizing structure 2 is provided with the secondary combustion-supporting air isolating device 6, the secondary combustion-supporting air isolating device 6 is arranged at the inner side of the combustion cylinder 3, the outer side of the combustion cylinder 3 is provided with the peripheral gas pipeline 5, the peripheral gas pipeline, a primary gas channel 10 is arranged on the inner side of the primary gas pipeline 1, a primary combustion-supporting air channel 11 is arranged between the secondary combustion-supporting air isolating device 6 and the primary gas pipeline 1, a secondary combustion-supporting air channel 12 is arranged between the secondary combustion-supporting air isolating device 6 and the combustion cylinder 3, and a peripheral gas channel 13 is arranged on the inner side of the peripheral gas pipeline 5;
specifically, the primary combustion air rotational flow flame stabilizing structure 2 is driven to move through the primary gas pipeline 1, the diameter and the length of flame are conveniently adjusted, the phenomenon that the center of the flame is excessively concentrated to cause local high temperature to generate nitrogen oxides is prevented, the primary combustion air rotational flow flame stabilizing structure 2 is used for stabilizing peripheral flame formed after the peripheral supersonic gas spray heads 4 spray high-speed gas, the uniform, stable and continuous combustion of the gas entering a hearth is guaranteed, the phenomenon that the local gas is excessively accumulated in the hearth to cause sudden combustion after reaching the combustion condition is avoided, and the combustion heat accumulated in a large amount in a short time generates serious safety accidents under severe airflow fluctuation or even serious conditions. The burner can stably and continuously burn to achieve low nitrogen emission by replacing the peripheral supersonic gas nozzle 4 with the gas nozzle 9 completely or partially or adjusting the injection angle of the gas nozzle 9.
Example 2:
referring to fig. 1, 3, 4, 5, 6, a supersonic gas jet low-nitrogen burner comprises a main body 15, a primary gas pipeline 1, a secondary combustion-supporting air isolating device 6, a combustion cylinder 3, a peripheral gas pipeline 5, a peripheral supersonic gas nozzle 4, a blunt-disk flame-stabilizing structure 8, a primary gas channel 10, a primary combustion-supporting air channel 11, a secondary combustion-supporting air channel 12, and a peripheral gas channel 13, wherein the combustion cylinder 3 is fixed on the right side of the main body 15, the primary gas pipeline 1 is arranged in the middle of the combustion cylinder 3, the blunt-disk flame-stabilizing structure 8 is arranged on the outer side of the primary gas pipeline 1, the secondary combustion-supporting air isolating device 6 is arranged on the outer side of the blunt-disk flame-stabilizing structure 8, the peripheral supersonic gas nozzle 4 is fixed on the right end of the peripheral gas pipeline 5, the peripheral gas pipeline 5 penetrates through the main body 15, and the peripheral supersonic gas nozzle 4 is fixed on, a primary gas channel 10 is arranged on the inner side of the primary gas pipeline 1, a primary combustion-supporting air channel 11 is arranged between the secondary combustion-supporting air isolating device 6 and the primary gas pipeline 1, a secondary combustion-supporting air channel 12 is arranged between the secondary combustion-supporting air isolating device 6 and the combustion cylinder 3, and a peripheral gas channel 13 is arranged on the inner side of the peripheral gas pipeline 5;
concretely, the adoption drives blunted dish steady flame structure 8 through a gas pipeline 1 and removes, conveniently adjust flame diameter and length, prevent that the flame center from too concentrating and causing local high temperature to produce nitrogen oxide, stabilize the periphery flame that forms after periphery supersonic gas shower nozzle 4 sprays high-speed gas through blunted dish steady flame structure 8, guarantee the even stable continuous combustion of gas that gets into furnace, avoid appearing local gas too much gathering in the furnace and cause and reach the sudden combustion after the combustion condition, this kind of burning short-term gathering a large amount of burning heats and takes place major safety accident under the violent air current fluctuation even serious condition. The burner can stably and continuously burn to achieve low nitrogen emission by replacing the peripheral supersonic gas nozzle 4 with the gas nozzle 9 completely or partially or adjusting the injection angle of the gas nozzle 9.
Example 3:
referring to fig. 2, 3 and 6, a supersonic gas jet low-nitrogen burner comprises a main body 15, a primary gas pipeline 1, a secondary combustion-supporting air isolating device 6, a secondary gas injection device 7, a combustion cylinder 3, a peripheral gas pipeline 5, a peripheral supersonic gas nozzle 4, a gas nozzle 9, a primary combustion-supporting air vortex flame stabilizing structure 2, a primary gas channel 10, a primary combustion-supporting air channel 11, a secondary combustion-supporting air channel 12, a secondary gas channel 14 and a peripheral gas channel 13, wherein the combustion cylinder 3 is fixed on the right side of the main body 15, the primary gas pipeline 1 is arranged in the middle of the combustion cylinder 3, the primary combustion-supporting air vortex flame stabilizing structure 2 is arranged on the outer side of the primary gas pipeline 1, the secondary combustion-supporting air isolating device 6 is arranged on the inner side of the combustion cylinder 3, a group of secondary gas injection devices 7 is arranged on the inner side of the combustion cylinder 3, and a secondary combustion-supporting air vortex, A peripheral gas pipeline 5 is arranged on the outer side of the combustion cylinder 3, the peripheral gas pipeline 5 penetrates through the main body 15, a peripheral supersonic gas nozzle 4 is fixed at the right end of the peripheral gas pipeline 5, a gas nozzle 9 is fixed at the right side of the secondary injection device 7, a primary gas channel 10 is arranged on the inner side of the primary gas pipeline 1, a primary combustion-supporting air channel 11 is arranged between the secondary combustion-supporting air isolating device 6 and the primary gas pipeline 1, a secondary combustion-supporting air channel 12 is arranged between the secondary combustion-supporting air isolating device 6 and the combustion cylinder 3, a secondary gas channel 14 is arranged in the secondary gas injection device 7, and a peripheral gas channel 13 is arranged on the inner side;
specifically, a primary combustion air rotational flow flame stabilizing structure 2 is driven to move through a primary gas pipeline 1, the diameter and the length of flame are conveniently adjusted, the phenomenon that partial high temperature generates nitric oxide due to over concentration of the flame center is prevented, the primary combustion air rotational flow flame stabilizing structure 2 is used for stabilizing gas sprayed by a secondary gas spraying device 7 to form stable and continuous flame during combustion, the secondary flame formed by the secondary gas spraying device 7 is used for stabilizing peripheral flame formed after high-speed gas is sprayed by a peripheral supersonic gas spraying nozzle 4, so that uniform, stable and continuous combustion of gas sprayed by all nozzles is ensured to enter a hearth, sudden combustion caused by over accumulation of partial gas in the hearth under the condition of reaching combustion conditions is avoided, and serious safety accidents are caused even under the condition that a large amount of combustion heat is accumulated during short-time to generate severe airflow fluctuation, meanwhile, the combustion area is increased, and the combustion heat aggregation is reduced. In the embodiment, the positions of the gas nozzle 9 and the peripheral supersonic gas nozzle 4 can be completely or partially exchanged, or the injection angle of the gas nozzle 9 is adjusted, so that the burner can stably and continuously burn, and low nitrogen emission is achieved.
Example 4:
referring to fig. 2, 3, 4, 5, 6, a supersonic gas jet low-nitrogen burner comprises a main body 15, a primary gas pipeline 1, a secondary combustion-supporting air isolating device 6, a secondary gas injection device 7, a combustion cylinder 3, a peripheral gas pipeline 5, a peripheral supersonic gas nozzle 4, a gas nozzle 9, a blunt-disk flame stabilizing structure 8, a primary gas channel 10, a primary combustion-supporting air channel 11, a secondary combustion-supporting air channel 12, a secondary gas channel 14, and a peripheral gas channel 13, wherein the combustion cylinder 3 is fixed on the right side of the main body 15, the primary gas pipeline 1 is arranged in the middle of the combustion cylinder 3, the blunt-disk flame stabilizing structure 8 is arranged on the outer side of the primary gas pipeline 1, the secondary combustion-supporting air isolating device 6 is arranged on the inner side of the combustion cylinder 3, the secondary gas injection device 7 is arranged on the inner side of the combustion cylinder 3, the peripheral gas pipeline 5 is arranged on the outer side of the combustion cylinder 3, a peripheral gas pipeline 5 penetrates through the main body 15, a peripheral supersonic gas nozzle 4 is fixed at the right end of the peripheral gas pipeline 5, a gas nozzle 9 is fixed at the right side of the secondary injection device 7, a primary gas channel 10 is arranged at the inner side of the primary gas pipeline 1, a primary combustion-supporting air channel 11 is arranged between the secondary combustion-supporting air isolating device 6 and the primary gas pipeline 1, a secondary combustion-supporting air channel 12 is arranged between the secondary combustion-supporting air isolating device 6 and the combustion cylinder 3, a secondary gas channel 14 is arranged in the secondary gas injection device 7, and a peripheral gas channel 13 is arranged at the inner side of the peripheral gas pipeline 5;
specifically, the blunt disk flame stabilizing structure 8 is driven to move through the primary gas pipeline 1, the diameter and the length of flame are conveniently adjusted, the phenomenon that the center of the flame is excessively concentrated to cause local high temperature to generate nitrogen oxide is prevented, the blunt disk flame stabilizing structure 8 is used for stabilizing the gas sprayed by the secondary gas spraying device 7 to form stable and continuous flame during combustion, the secondary flame formed by the secondary gas spraying device 7 is used for stabilizing the peripheral flame formed after the peripheral supersonic gas spraying nozzle 4 sprays high-speed gas, so that uniform, stable and continuous combustion is ensured when the gas sprayed by all the nozzles enters the hearth, sudden combustion caused by the fact that local gas is excessively accumulated in the hearth to reach the combustion condition is avoided, a great amount of combustion heat accumulated during short combustion generates severe airflow fluctuation and even serious safety accidents, and the combustion area is increased at the same time, and combustion heat accumulation is reduced. In the embodiment, the positions of the gas nozzle 9 and the peripheral supersonic gas nozzle 4 can be completely or partially exchanged, or the injection angle of the gas nozzle 9 is adjusted, so that the burner can stably and continuously burn, and low nitrogen emission is achieved.
The working principle is as follows: the invention relates to a supersonic gas jet low-nitrogen burner, when needing to use, a primary gas pipeline 1 drives a primary combustion-supporting air rotational flow flame stabilizing structure 2 to move back and forth along the axial direction, the optimal flame diameter and length are adjusted, simultaneously, the central temperature of the flame is not too concentrated to cause local high temperature to generate nitrogen oxide, which is beneficial to adapting to various hearth sizes, a secondary combustion-supporting air separation device 6 is supported on a combustion cylinder 3 and can move back and forth relative to the combustion cylinder 3, a peripheral supersonic gas nozzle 4 is welded on a peripheral gas pipeline 5, the peripheral supersonic gas nozzle 4 sprays supersonic combustible gas, when the high-flow combustible gas is injected into the flue gas, a part of the flue gas is sucked in a curling way to dilute the combustible gas and reduce the density of the combustible gas, thereby dispersing the heat released by the combustible gas in the same unit volume, reducing the local heat concentration of combustion and reducing the generation of thermal, meanwhile, the combustion-supporting air flowing out of the secondary combustion-supporting air channel 12 also absorbs a certain amount of flue gas at the edge, dilutes the oxygen content in the combustion-supporting air, and reduces the combustion heat intensity in unit volume when the combustion-supporting air is combusted on a contact surface with fuel gas, and the combustion-supporting air is expressed as follows: the secondary combustion-supporting air flows out from the secondary combustion-supporting air channel 12, partial smoke is sucked at the edge position of the right side of the combustion cylinder 3, the combustion-supporting air at the nearest contact surface with the fuel gas is diluted by the smoke, and then the combustion-supporting air and the combustible gas ejected by the peripheral supersonic speed spray head are diluted by the smoke and flow in parallel, a turbulent layer is formed only on the contact surface of the two gases, the combustible gas and the combustion-supporting air are mixed to reach the combustible concentration, the process is slower than the mixing speed of forced mixing, and the process of mixing along the axial flow is formed at the position close to the furnace wall of the boiler, so the combustion area is larger than the combustion area formed only at the outlet of the traditional forced mixing type, the heat released by combustion is not easy to gather, thermal nitrogen oxides cannot be formed, the discharge of the nitrogen oxides is reduced, the primary combustion-supporting air rotational flow flame stabilizing structure 2 is matched with the primary, the burner has the advantages that the effect of stabilizing peripheral flame is achieved, combustible gas is ejected from special spray holes on a primary gas pipeline 1 and is mixed with combustion-supporting air which flows out from a primary combustion-supporting air swirling flow flame stabilizing structure 2, the combustible condition is achieved, after the burner is ignited by an ignition device, stable combustion is formed at the position, the uninterrupted combustion of flame in the whole combustion process is guaranteed, the effect of the primary combustion-supporting air swirling flow flame stabilizing structure 2 is achieved, the two gases are stirred and mixed, the flame is scattered and opened, the flame aggregation is avoided, the central temperature is reduced, meanwhile, the peripheral mixed gas is stabilized and combusted, when the power of the burner is increased, in the combustion of two circles of combustible gas, no flame or heat fault areas appear in the middle, when the central primary flame cannot continuously ignite the peripheral gas, a circle of secondary gas ejection devices 7 are arranged in a secondary combustion-supporting air channel 12, the flame of the primary, the continuous radial flame is achieved, the primary combustion-supporting air rotational flow flame stabilizing structure 2 can be replaced by a blunt disc flame stabilizing structure 8 to achieve the same flame stabilizing effect, the peripheral supersonic gas nozzle 4 can be partially or completely replaced by an inclined gas nozzle 9, the angle can be adjusted randomly according to requirements to achieve the optimal low-nitrogen combustion effect, the nozzle form on the secondary gas injection device 7 can be that the peripheral supersonic gas nozzle 4 or the gas nozzle 9 is arranged in a single form for one circle, or the peripheral supersonic gas nozzle 4 and the gas nozzle 9 are arranged in a mixed manner to achieve the optimal low-nitrogen combustion effect.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a low NOx burner of supersonic speed gas jet which characterized in that: comprises a main body (15), a primary gas pipeline (1), a primary combustion-supporting air rotational flow flame stabilizing structure (2), a secondary combustion-supporting air separation device (6), a combustion cylinder (3), a peripheral gas pipeline (5), a peripheral supersonic gas nozzle (4), a blunt disc flame stabilizing structure (8), a gas nozzle (9), a primary gas channel (10), a primary combustion-supporting air channel (11), a secondary combustion-supporting air channel (12) and a peripheral gas channel (13), wherein the combustion cylinder (3) is fixed on the right side of the main body (15), the primary gas pipeline (1) is arranged in the middle of the combustion cylinder (3), the primary combustion-supporting air rotational flow flame stabilizing structure (2) is arranged on the outer side of the primary combustion-supporting air rotational flow flame stabilizing structure (2), the secondary combustion-supporting air separation device (6) is arranged on the inner side of the combustion cylinder (3), the utility model discloses a combustion chamber, including a combustion section of thick bamboo (3), combustion section of thick bamboo (3) outside is equipped with around gas pipeline (5), around gas pipeline (5) run through main part (15), gas pipeline (5) right-hand member is fixed with periphery supersonic gas shower nozzle (4) around, once gas pipeline (1) inboard is equipped with once gas passageway (10), be equipped with once combustion-supporting wind passageway (11) between secondary combustion-supporting wind isolating device (6) and a gas pipeline (1), be equipped with secondary combustion-supporting wind passageway (12) between secondary combustion-supporting wind isolating device (6) and combustion section of thick bamboo (3), gas pipeline (5) inboard is periphery gas passageway (13) around.
2. A supersonic gas jet low-nitrogen burner as claimed in claim 1, wherein: a group of secondary gas injection devices (7) are arranged in the secondary combustion air channel (12), peripheral supersonic gas nozzles (4) are fixed on the right sides of the secondary gas injection devices (7), the peripheral supersonic gas nozzles (4) can be replaced by gas nozzles (9) completely or partially, and the gas nozzles (9) are inclined.
3. A supersonic gas jet low-nitrogen burner as claimed in claim 1, wherein: the primary combustion-supporting air rotational flow flame stabilizing structure (2) can be replaced by a blunt disk flame stabilizing structure (8).
4. A supersonic gas jet low-nitrogen burner as claimed in claim 2, wherein: and a secondary gas channel (14) is arranged on the inner side of the secondary gas injection device (7).
5. A supersonic gas jet low-nitrogen burner as claimed in claim 1, wherein: the peripheral supersonic gas nozzle (4) can be completely or partially replaced by a gas nozzle (9), and the gas nozzle (9) is in an inclined type.
6. A supersonic gas jet low-nitrogen combustor as claimed in claim 4, wherein: the primary combustion-supporting air channel (11) and the secondary combustion-supporting air channel (12) both penetrate through the main body (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110133793.4A CN112781043A (en) | 2021-01-30 | 2021-01-30 | Supersonic gas jet low-nitrogen burner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110133793.4A CN112781043A (en) | 2021-01-30 | 2021-01-30 | Supersonic gas jet low-nitrogen burner |
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| CN112781043A true CN112781043A (en) | 2021-05-11 |
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| CN202110133793.4A Pending CN112781043A (en) | 2021-01-30 | 2021-01-30 | Supersonic gas jet low-nitrogen burner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898947A (en) * | 2021-11-15 | 2022-01-07 | 中国计量大学 | Gas burner |
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2021
- 2021-01-30 CN CN202110133793.4A patent/CN112781043A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898947A (en) * | 2021-11-15 | 2022-01-07 | 中国计量大学 | Gas burner |
| CN113898947B (en) * | 2021-11-15 | 2022-11-18 | 中国计量大学 | Gas burner |
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