CN220624038U - Gas grading low NOx high-speed burner - Google Patents
Gas grading low NOx high-speed burner Download PDFInfo
- Publication number
- CN220624038U CN220624038U CN202322183515.7U CN202322183515U CN220624038U CN 220624038 U CN220624038 U CN 220624038U CN 202322183515 U CN202322183515 U CN 202322183515U CN 220624038 U CN220624038 U CN 220624038U
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- gas
- air
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- combustion chamber
- shell
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 124
- 239000002737 fuel gas Substances 0.000 abstract description 35
- 239000007789 gas Substances 0.000 description 175
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 56
- 101150038956 cup-4 gene Proteins 0.000 description 16
- 239000000446 fuel Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a fuel gas grading low-NOx high-speed burner, which comprises a main fuel gas pipe, an air shell, a mixing cup, a combustion chamber, an auxiliary fuel gas guide pipe and the like, wherein when fuel gas and combustion air are mixed and combusted, the combustion air in the air shell is graded and mixed with the fuel gas through an air grading opening on the mixing cup and a gap between the mixing cup and the combustion chamber, so that graded combustion is realized, the amount of thermal NOx is reduced by the principle of reducing the temperature of flame during combustion, and optionally, the fuel gas conveyed by the main fuel gas pipe is reduced and simultaneously conveyed by a plurality of auxiliary fuel gas guide pipes, so that a combustion reaction zone is enlarged, the temperature of flame during combustion can be further reduced, and the amount of thermal NOx is better reduced.
Description
Technical Field
The utility model relates to the technical field of burners, in particular to a fuel gas grading low-NOx high-speed burner.
Background
Nitrogen oxides (NOx) are one of the main air pollutants discharged in the combustion process, smoke caused by the nitrogen oxides can generate reaction products of harmful atmosphere, the high-temperature environment of the thermal industry is a source of main thermal NOx emission, along with the enhancement of environmental awareness and the stricter environmental protection standards, how to reduce the NOx emission of the thermal industry, especially the NOx emission in the high-temperature combustion field, has become urgent, at present, partial low NOx burner adopts a semi-premixed burner, the burner reduces NOx generation by mixing primary air and fuel gas in advance and introducing secondary air at a combustion position, thus the staged combustion effect is achieved, but the semi-premixed burner is easier to ignite because the air and the fuel gas are mixed in advance, the combustion center of the burner is closer to a mixed gas ejection port, the risk of tempering is provided, the cooling effect of secondary air on the flame of the combustion center is not obvious, and the effect of reducing thermal NOx of the burner is poor.
The existing part of low NOx burner does not solve the problems, such as an air grading type low NOx high-speed burner (publication No. CN210833054U publication No. 2020-06-23), an air grading type low NOx high-speed burner, the air grading type low NOx high-speed burner comprises a burner body, a burner block, an air fuel pipe and a backflow baffle, the backflow baffle is fixedly connected in the burner body through bolts, combustion-supporting air can be guided into a combustion cavity in a grading manner, high-temperature heat radiation in the combustion cavity can be blocked, the problem that internal parts are easily damaged by high temperature is solved, the air fuel pipe penetrates through the burner body, the top end part of the air fuel pipe penetrates through the backflow baffle, the air fuel pipe is used for transmitting natural gas and primary air required by combustion, the burner block is fixedly connected to the top end of the burner body, the burner block is fixedly connected to the inner wall of a high-temperature kiln, and the special structure of the burner block can roll up low-oxygen content flue gas into high-speed flame, and the combustion temperature of the high-speed flame is reduced, so that the generation amount of NOx is reduced.
The air classification type low-NOx high-speed burner achieves staged combustion by splitting air to a part of the air to be mixed with fuel gas and splitting the other part of the air to the combustion chamber, but the combustion center of the burner is closer to a mixed gas ejection port, the risk of tempering is provided, secondary air split into the combustion chamber cannot effectively contact the combustion center, the cooling effect of flame in the combustion center of the burner is not ideal, and therefore, improvement is still provided.
Disclosure of Invention
Aiming at the technical defects in the background technology, the utility model provides a gas grading low-NOx high-speed burner, which solves the technical problems and meets the actual requirements, and the specific technical scheme is as follows:
the gas grading low-NOx high-speed burner comprises a main gas pipe, wherein one end of the main gas pipe is provided with a main gas inlet, and one end of the main gas pipe, which is far away from the main gas inlet, is provided with a main gas nozzle;
the main gas pipe is sleeved with an air shell, an air inlet communicated with the inside of the air shell is arranged on the outer side of the air shell, a combustion chamber is arranged at one end, close to the main gas nozzle, of the air shell, and the combustion chamber is communicated with the inside of the air shell;
the main gas nozzle is provided with a mixing cup extending into the combustion chamber, and a plurality of air classification openings communicated with the inner side of the mixing cup are arranged on the outer side of the mixing cup;
the radial surface of the air shell is wound with an air distribution pipe, the air distribution pipe is provided with a plurality of auxiliary gas conduits, and each auxiliary gas conduit extends from one side of the air distribution pipe to the combustion chamber.
As a further technical scheme of the utility model, one end of the air shell close to the main gas inlet is provided with a gas shell, and the main gas pipe is fixedly connected with the gas shell.
As a further technical scheme of the utility model, an ignition electrode is arranged between the main gas pipe and the air shell, the ignition electrode is fixedly connected with the gas shell, and the ignition electrode extends into the mixing cup from one side close to the main gas inlet.
As a further technical scheme of the utility model, a burner block is arranged on the outer side of the combustion chamber, and a mounting flange is arranged between the air shell and the burner block.
As a further technical scheme of the utility model, one end of the combustion chamber far away from the air shell is provided with a combustion chamber outlet, one end of each auxiliary gas conduit far away from the gas distribution pipe is provided with a conduit opening, and each conduit opening is positioned on the radial side surface of the combustion chamber outlet.
As a further technical scheme of the utility model, a plurality of conduit openings are provided with the same auxiliary gas ring communicated with each auxiliary gas conduit, and auxiliary gas nozzles communicated with the inside of the auxiliary gas ring are arranged on the outer side of the auxiliary gas ring.
As a further technical scheme of the utility model, the gas distribution pipe is provided with at least one auxiliary gas inlet.
As a further technical scheme of the utility model, the air classification openings comprise a plurality of first air openings, a plurality of second air openings and a plurality of third air openings, wherein the first air openings are positioned at one end of the mixing cup close to the main gas nozzle, the third air openings are positioned at one end of the mixing cup far away from the main gas nozzle, and the second air openings are positioned between the first air openings and the third air openings.
The utility model has the beneficial effects that:
according to the utility model, the combustion air and the fuel gas are mixed in a grading manner through the air classification openings on the mixing cup and the gaps between the mixing cup and the combustion chamber, so that the temperature of flame during combustion can be effectively reduced when the fuel gas and the combustion air are combusted, the backfire phenomenon during combustion of the fuel gas and the combustion air can be avoided, and the fuel gas conveyed by the main fuel gas pipe is optionally reduced while the fuel gas is conveyed by the auxiliary fuel gas pipes, so that the combustion reaction area is enlarged, the temperature of flame during combustion can be further reduced, and the amount of thermal NOx generated can be better reduced.
Drawings
FIG. 1 is a front cross-sectional view of a gas staged low NOx high velocity burner.
FIG. 2 is a top cross-sectional view of a gas staged low NOx high velocity burner.
FIG. 3 is a left side view of a gas staged low NOx high velocity burner.
FIG. 4 is a schematic diagram of another configuration of a gas staged low NOx high velocity burner gas distribution tube and secondary gas conduit.
FIG. 5 is a top cross-sectional view of another configuration of a gas staged low NOx high velocity burner.
FIG. 6 is a schematic diagram of a gas staged low NOx high velocity burner secondary gas loop.
Wherein: the main gas pipe 1, the main gas inlet 11, the main gas nozzle 12, the air housing 2, the air inlet 21, the gas housing 22, the combustion chamber 3, the burner block 31, the combustion chamber outlet 32, the mixing cup 4, the air classifying port 41, the first air port 411, the second air port 412, the third air port 413, the gas distribution pipe 5, the auxiliary gas inlet 51, the auxiliary gas guide pipe 6, the guide pipe port 61, the ignition electrode 7, the mounting flange 8, the auxiliary gas ring 9 and the auxiliary gas nozzle 91.
Detailed Description
Embodiments of the present utility model will be described below with reference to the accompanying drawings and examples, but the embodiments of the present utility model are not limited to the following examples, and the present utility model relates to the relevant essential parts in the art, and should be regarded as known and understood by those skilled in the art.
As shown in fig. 1 or 2, a gas grading low-NOx high-speed burner comprises a main gas pipe 1, wherein one end of the main gas pipe 1 is provided with a main gas inlet 11, and one end of the main gas pipe 1, which is far away from the main gas inlet 11, is provided with a main gas nozzle 12; the main gas pipe 1 is sleeved with an air shell 2, an air inlet 21 communicated with the inside of the air shell 2 is arranged on the outer side of the air shell 2, a combustion chamber 3 is arranged at one end, close to the main gas nozzle 12, of the air shell 2, and the combustion chamber 3 is communicated with the inside of the air shell 2; the main gas nozzle 12 is provided with a mixing cup 4 extending into the combustion chamber 3, and a plurality of air classification openings 41 communicated with the inner side of the mixing cup 4 are arranged on the outer side of the mixing cup 4; the radial surface of the air housing 2 is provided with an air distribution pipe 5, the air distribution pipe 5 is provided with a plurality of auxiliary gas conduits 6, and each auxiliary gas conduit 6 extends from one side of the air distribution pipe 5 to the combustion chamber 3.
The main gas pipe 1 of the utility model leads the fuel gas into the combustion chamber 3 for combustion, the main gas inlet 11 is connected with a fuel gas conveying device or pipeline (not shown in the figure), the fuel gas conveying device or pipeline conveys the fuel gas into the main gas pipe 1 through the main gas inlet 11 and is sprayed out into the mixing cup 4 from the main gas nozzle 12, the air inlet 21 is connected with an air pump (not shown in the figure) for conveying combustion-supporting air, the air pump enters the air shell 2 from the air inlet 21 and flows to the outer side of the mixing cup 4, then the flame-retardant air enters the mixing cup 4 along the air grading opening 41 to be mixed with the fuel gas, then the mixed gas in the mixing cup 4 is ignited through the ignition electrode 7, finally the mixed gas is combusted in the combustion chamber 3 and flame is sprayed out of the combustion chamber outlet 32.
The gas distribution pipe 5 is connected with a gas conveying device or a pipeline, gas can enter the auxiliary gas guide pipe 6 through the gas distribution pipe 5, and finally the gas is sprayed out from the guide pipe mouth 61, when the flame burnt in the combustion chamber 3 raises the furnace temperature or the smoke is discharged and carbon monoxide cannot be detected, the gas quantity conveyed by the main gas pipe 1 is reduced, the gas is introduced into the gas distribution pipe 5, then the gas can be sprayed out from the guide pipe mouth 61 and is ignited by the flame at the combustion chamber outlet 32, and the total quantity of the gas introduced into the main gas pipe 1 and the gas distribution pipe 5 and the quantity of flame-retardant air introduced into the air inlet 21 need to be maintained at a proper air-fuel ratio, and at the moment, the combustion of the gas in the combustion chamber 3 is in excess air, and the excess combustion air can be sprayed out from the combustion chamber outlet 32 and mixed with the gas sprayed out from the guide pipe mouth 61 for combustion, so that the local high temperature during flame combustion is reduced, and the quantity of thermal NOx is further reduced.
According to the utility model, the combustion air and the fuel gas are mixed in a grading manner through the air classification openings 41 on the mixing cup 4 and the gaps between the mixing cup 4 and the combustion chamber 3, so that the temperature of flame during combustion can be effectively reduced when the fuel gas and the combustion air are combusted, the backfire phenomenon during combustion of the fuel gas and the combustion air can be avoided, and the fuel gas conveyed by the main fuel gas pipe 1 is optionally reduced while the fuel gas is conveyed by the auxiliary fuel gas pipes 6, so that the combustion reaction area is enlarged, the temperature of flame during combustion can be further reduced, and the amount of thermal NOx generated can be better reduced.
As shown in fig. 1 or 2, as one of the preferred embodiments of the present utility model, the air housing 2 is provided with a gas housing 22 at one end near the main gas inlet 11, and the main gas pipe 1 is fixedly connected with the gas housing 22.
The gas shell 22 and the air shell 2 of the utility model form a space for containing combustion air and enable the combustion air to flow to the combustion chamber 3, the gas shell 22 fixes the main gas pipe 1, and meanwhile, the gas shell 22 and the air shell 2 are used as supporting structures of one end of burner gas and air, so that the structure of one end of burner gas and air is firmer.
As shown in fig. 2, as one of the preferred embodiments of the present utility model, an ignition electrode 7 is provided between the main gas pipe 1 and the air housing 2, the ignition electrode 7 is fixedly connected to the gas housing 22, and the ignition electrode 7 extends into the mixing cup 4 from a side close to the main gas inlet 11.
The ignition electrode 7 of the utility model is connected with a power supply (not shown) near one end of the main gas inlet 11, the ignition electrode 7 is positioned at one end of the mixing cup 4 to generate electric spark by the electric energy provided by the power supply, when the gas and the combustion air conveyed by the main gas pipe 1 are mixed into mixed gas in the mixing cup 4, the mixed gas can be ignited by the electric spark generated by the ignition electrode 7, and the ignited flame can be sprayed out from the combustion chamber outlet 32 under the pushing of the gas and the combustion air.
As shown in fig. 2, as one of the preferred embodiments of the present utility model, a burner block 31 is provided outside the combustion chamber 3, and a mounting flange 8 is provided between the air housing 2 and the burner block 31.
The burner block 31 of the utility model can keep high temperature in the combustion chamber 3 to ensure the stability of combustion, the mounting flange 8 mounts and fixes the gas shell 22, the air shell 2, the combustion chamber 3 and the burner block 31 on the furnace wall, and the burner is mounted on the furnace wall or detached from the furnace wall by twisting the mounting flange 8 by a tool matched with the mounting flange 8, thereby facilitating the maintenance or replacement of the burner.
As shown in any one of fig. 2 to 4, as one of the preferred embodiments of the present utility model, the combustion chamber 3 is provided with a combustion chamber outlet 32 at an end remote from the air housing 2, and each of the auxiliary gas ducts 6 is provided with a duct opening 61 at an end remote from the gas distribution duct 5, each duct opening 61 being located radially laterally of the combustion chamber outlet 32.
According to the utility model, flame burnt in the combustion chamber is sprayed out through the outlet of the combustion chamber, the sprayed flame heats facilities such as a kiln, when the flame burnt in the combustion chamber 3 raises the furnace temperature or smoke is discharged and carbon monoxide cannot be detected, the gas quantity conveyed by the main gas pipe 1 is reduced, gas is introduced into the gas distribution pipe 5, then the gas is sprayed out from the pipe mouth 61 and is ignited by the flame at the outlet 32 of the combustion chamber, and the total quantity of the gas introduced by the main gas pipe 1 and the gas distribution pipe 5 and the quantity of flame-retardant air introduced by the air inlet 21 need to be maintained at a proper air-fuel ratio, at the moment, the combustion of the gas in the combustion chamber 3 is in excess air, and the excess combustion air is sprayed out from the outlet 32 of the combustion chamber and is mixed with the gas sprayed out from the pipe mouth 61, so that the local high temperature of the flame during combustion is reduced, and the quantity of thermal NOx is further reduced.
Further, according to the requirement of the actual heating condition, the auxiliary gas conduits 6 may be set parallel to each other, so that the flame sprayed from the conduit port 61 and the flame sprayed from the combustion chamber outlet 32 are parallel to each other, or the auxiliary gas conduits 6 are eccentrically arranged at one side of the conduit port 61, so that the flame sprayed from the conduit port 61 is biased to the flame sprayed from the combustion chamber outlet 32, or the auxiliary gas conduits 6 are eccentrically arranged at one side of the gas distribution pipe 5, so that the flame sprayed from the conduit port 61 is biased to the flame sprayed from the combustion chamber outlet 32, and further, the specific flame requirement or the specific area atmosphere requirement is satisfied.
Further, according to the requirement of uniformity of fuel gas distribution of the burner, the auxiliary fuel gas conduit 6 can be optionally arranged in an end-to-end manner as shown in fig. 3, or the auxiliary fuel gas conduit 6 can be arranged in an end-to-end manner as shown in fig. 4, or each gas distribution pipe 5 can be separately connected with a fuel gas conveying device or a pipeline.
As shown in fig. 5 or 6, as one of the preferred embodiments of the present utility model, a plurality of duct ports 61 are provided with the same auxiliary gas ring 9 communicating with each auxiliary gas duct 6, and a plurality of auxiliary gas nozzles 91 communicating with the inside of the auxiliary gas ring 9 are provided outside the auxiliary gas ring 9.
The auxiliary gas ring 9 and the auxiliary gas nozzles 91 can uniformly spray the gas conveyed by the auxiliary gas guide pipe 6 around the combustion chamber outlet 32, so that the gas sprayed by the auxiliary gas nozzles 91 can be fully mixed with combustion air sprayed by the combustion chamber outlet 32 for combustion, and the gas can be dispersed for combustion, thereby reducing the local high temperature of flame during combustion and further reducing the amount of thermal NOx.
Further, the auxiliary gas ring 9 can change the direction of the flame sprayed from the auxiliary gas nozzles 91 by changing the positions of a plurality of auxiliary gas nozzles 91 on the surface of the auxiliary gas ring, so as to change the direction of the flame sprayed from the auxiliary gas nozzles 91, thereby meeting the requirements of specific flame or atmosphere in a specific area, or can change the spraying direction of the gas by arranging nozzles on the auxiliary gas nozzles 91, and can also adjust the spraying direction of the flame by changing the spraying direction of the gas by the nozzles.
As shown in fig. 3 or 4, as one of the preferred embodiments of the present utility model, the gas distribution pipe 5 is provided with at least one auxiliary gas inlet 51.
According to the utility model, the auxiliary gas inlet 51 enables gas to enter the gas distribution pipe 5, the auxiliary gas guide pipe 6 and the auxiliary gas ring 9, one auxiliary gas inlet 51 is arranged to meet the basic gas conveying requirement, and two or more auxiliary gas inlets 51 can be arranged according to the gas conveying flow and uniformity requirement, so that the auxiliary gas inlet 51 can be selected to convey gas according to the gas quantity and the gas uniformity requirement, and the temporarily-inactive auxiliary gas inlet 51 can be used as a supporting structure of the gas distribution pipe 5, the auxiliary gas guide pipe 6 and the auxiliary gas ring 9.
Further, the auxiliary gas inlet 51 may be connected to a three-way pipe to communicate with the combustion air and the gas respectively, or when two or more auxiliary gas inlets 51 are adopted, one of the auxiliary gas inlets 51 communicates with the combustion air, the combustion air is synchronously input to the gas distribution pipe 5 when the combustion air is input into the combustion chamber 3, and when the flame is ejected from the combustion chamber outlet 32, the combustion air ejected from the conduit port 61 or the auxiliary gas nozzle 91 contacts with the flame, thereby playing a role of further staged combustion, further reducing the amount of thermal NOx generation, and it is noted that when the combustion air is input into the gas distribution pipe 5, the amount of the combustion air input into the air inlet 21 needs to be properly reduced.
As shown in fig. 2, as one of the preferred embodiments of the present utility model, the air classifying ports 41 include a plurality of first air ports 411, a plurality of second air ports 412, and a plurality of third air ports 413, wherein the plurality of first air ports 411 are located at one end of the mixing cup 4 close to the main gas nozzle 12, the plurality of third air ports 413 are located at one end of the mixing cup 4 far from the main gas nozzle 12, and the plurality of second air ports 412 are located between the plurality of first air ports 411 and the plurality of third air ports 413.
The first air port 411 is closest to the main gas nozzle 12, so that the combustion air sprayed from the first air port 411 is mixed with the gas first, when the fuel and the combustion air are combusted, the combustion air sprayed from the first air port 411 is used as the first air for staged combustion, and so on, the combustion air sprayed from the second air port 412 is the second air for staged combustion, the combustion air sprayed from the third air port 413 is the third air for staged combustion, the combustion air sprayed from the gap between the mixing cup 4 and the combustion chamber 3 is the fourth air for staged combustion, and if the conduit port 61 or the auxiliary gas nozzle 91 is used for spraying the combustion air, the combustion air is the fifth air for staged combustion.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.
Claims (8)
1. The utility model provides a gas is low NOx high-speed nozzle in grades, is including main gas pipe (1), its characterized in that: one end of the main gas pipe (1) is provided with a main gas inlet (11), and one end of the main gas pipe (1) far away from the main gas inlet (11) is provided with a main gas nozzle (12);
the main gas pipe (1) is sleeved with an air shell (2), an air inlet (21) communicated with the inside of the air shell (2) is formed in the outer side of the air shell (2), a combustion chamber (3) is formed in one end, close to a main gas nozzle (12), of the air shell (2), and the combustion chamber (3) is communicated with the inside of the air shell (2);
the main gas nozzle (12) is provided with a mixing cup (4) extending into the combustion chamber (3), and a plurality of air classification openings (41) communicated with the inner side of the mixing cup (4) are arranged at the outer side of the mixing cup (4);
the radial surface of the air shell (2) is wound with an air distribution pipe (5), the air distribution pipe (5) is provided with a plurality of auxiliary gas conduits (6), and each auxiliary gas conduit (6) extends from one side of the air distribution pipe (5) to the combustion chamber (3).
2. The gas staged low NOx high velocity burner of claim 1, wherein: the air shell (2) is provided with a gas shell (22) near one end of the main gas inlet (11), and the main gas pipe (1) is fixedly connected with the gas shell (22).
3. The gas staged low NOx high velocity burner of claim 2, wherein: an ignition electrode (7) is arranged between the main gas pipe (1) and the air shell (2), the ignition electrode (7) is fixedly connected with the gas shell (22), and the ignition electrode (7) extends into the mixing cup (4) from one side close to the main gas inlet (11).
4. The gas staged low NOx high velocity burner of claim 1, wherein: the burner block (31) is arranged on the outer side of the combustion chamber (3), and the mounting flange (8) is arranged between the air shell (2) and the burner block (31).
5. The gas staged low NOx high velocity burner of claim 1, wherein: one end of the combustion chamber (3) far away from the air shell (2) is provided with a combustion chamber outlet (32), one end of each auxiliary gas conduit (6) far away from the gas distribution pipe (5) is provided with a conduit opening (61), and each conduit opening (61) is positioned on the radial side face of the combustion chamber outlet (32).
6. The gas staged low NOx high velocity burner of claim 5, wherein: the plurality of conduit openings (61) are provided with auxiliary gas rings (9) communicated with each auxiliary gas conduit (6), and auxiliary gas nozzles (91) communicated with the inside of the auxiliary gas rings (9) are arranged on the outer sides of the auxiliary gas rings (9).
7. The gas staged low NOx high velocity burner of claim 1, wherein: the gas distribution pipe (5) is provided with at least one auxiliary gas inlet (51).
8. The gas staged low NOx high velocity burner of claim 1, wherein: the air classification ports (41) comprise a plurality of first air ports (411), a plurality of second air ports (412) and a plurality of third air ports (413), wherein the first air ports (411) are positioned at one end of the mixing cup (4) close to the main gas nozzle (12), the third air ports (413) are positioned at one end of the mixing cup (4) far away from the main gas nozzle (12), and the second air ports (412) are positioned between the first air ports (411) and the third air ports (413).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322183515.7U CN220624038U (en) | 2023-08-15 | 2023-08-15 | Gas grading low NOx high-speed burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322183515.7U CN220624038U (en) | 2023-08-15 | 2023-08-15 | Gas grading low NOx high-speed burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220624038U true CN220624038U (en) | 2024-03-19 |
Family
ID=90215061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322183515.7U Active CN220624038U (en) | 2023-08-15 | 2023-08-15 | Gas grading low NOx high-speed burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220624038U (en) |
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2023
- 2023-08-15 CN CN202322183515.7U patent/CN220624038U/en active Active
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