CN215765094U - Flame adjustable type smoke internal circulation combustor - Google Patents
Flame adjustable type smoke internal circulation combustor Download PDFInfo
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- CN215765094U CN215765094U CN202121885105.1U CN202121885105U CN215765094U CN 215765094 U CN215765094 U CN 215765094U CN 202121885105 U CN202121885105 U CN 202121885105U CN 215765094 U CN215765094 U CN 215765094U
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Abstract
The utility model is suitable for the technical field of burners, and provides a flame-adjustable flue gas internal circulation burner, which comprises: a combustion supporting air passage housing; the staged combustion mechanism is arranged on the combustion-supporting air channel shell and used for reasonably arranging fuel and uniformly releasing heat; the smoke entrainment mechanism is used for adjusting the mixing of air and fuel to promote the smoke to generate backflow to participate in combustion; wherein, the staged combustion mechanism includes a center-stage combustion assembly, a primary combustion assembly and a secondary combustion assembly. The utility model is provided with the staged combustion mechanism and the smoke entrainment mechanism, can control the combustion area through the distribution of the central stage, the primary stage and the secondary stage of the gas of the burner and the adjustable direction and the nozzle size, ensures a reasonable combustion power field, has stable combustion, reasonable flame shape, uniform temperature field, effectively controls the generation of oxynitride, and has reasonable structure, high thermal efficiency, convenient use and adjustment and good energy-saving effect.
Description
Technical Field
The utility model belongs to the technical field of burners, and particularly relates to a flame-adjustable smoke internal circulation burner.
Background
The burner is a device which sprays fuel and air in a certain mode to be mixed and burnt, the fuel adopted by the gas burner comprises various fuel gases such as fuel gas, coke oven gas, blast furnace gas, gas and the like, a large amount of smoke is generated after the fuel gas is burnt, and pollutants such as nitrogen oxides and the like are contained in the smoke, so that the problem of environmental pollution is generated.
Along with the improvement of environmental protection requirement and the popularization and use of gas fuel, low pollution gas burner technique obtains the attention of enterprise more and more, and low nitrogen burner uses flue gas recirculation technique comparatively ripe at present, but receives northern weather influence easily, and the flue gas produces more comdenstion water influence burning after mixing with cold air.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model aims to provide a flame-adjustable smoke internal circulation combustor, and aims to solve the problem that combustion is influenced when the combustor is mixed with cold air when smoke is recycled in the prior art.
The embodiment of the utility model is realized in such a way that the flame-adjustable internal circulation combustor for flue gas comprises:
a combustion supporting air passage housing;
the staged combustion mechanism is arranged on the combustion-supporting air channel shell and used for reasonably arranging fuel and uniformly releasing heat;
the smoke entrainment mechanism is used for adjusting the mixing of air and fuel to promote the smoke to generate backflow to participate in combustion;
wherein, the staged combustion mechanism includes a center-stage combustion assembly, a primary combustion assembly and a secondary combustion assembly.
The flame-adjustable smoke internal circulation combustor provided by the embodiment of the utility model is provided with the staged combustion mechanism and the smoke entrainment mechanism, and the central stage, the primary stage and the secondary stage of the fuel gas of the combustor are distributed, the direction and the nozzle size are adjustable, so that a combustion area can be controlled, a reasonable combustion power field is ensured, the combustion is stable, the flame shape is reasonable, the temperature field is uniform, the generation of oxynitride is effectively controlled, the structure is reasonable, the thermal efficiency is high, the use and the adjustment are convenient, and the energy-saving effect is good.
Drawings
Fig. 1 is a schematic structural diagram of a flame-adjustable internal flue gas circulation burner according to an embodiment of the present invention;
FIG. 2 is a front sectional view of a flame adjustable flue gas internal circulation burner provided in an embodiment of the present invention;
fig. 3 is a schematic view of the structure in direction a of fig. 2.
In the drawings: 1. a combustion supporting air passage housing; 2. the inner layer is used for rolling and sucking the smoke shell; 3. a primary gas chamber; 4. a central rotational flow stable combustion structure; 5. a central gas adjustable nozzle; 6. a primary air adjustable nozzle; 7. a secondary gas sudden shrinkage cavity pipe; 8. the secondary air space is adjustable to draw the body; 9. a support body; 10. the inner layer is coiled and sucked with a conical ring; 11. a primary gas pipe; 12. a primary gas bronchus annular cavity; 13. a central tube; 14. a swirl vane; 15. an inner ring plate; 16. an outer ring plate; 17. a secondary gas pipe; 18. and a projecting nozzle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1 to 2, a structure of a flame-adjustable flue gas internal circulation burner provided in an embodiment of the present invention includes:
a combustion-supporting air passage housing 1;
the staged combustion mechanism is arranged on the combustion-supporting air channel shell 1 and used for reasonably arranging fuel and uniformly releasing heat;
the smoke entrainment mechanism is used for adjusting the mixing of air and fuel to promote the smoke to generate backflow to participate in combustion;
wherein, the staged combustion mechanism includes a center-stage combustion assembly, a primary combustion assembly and a secondary combustion assembly.
In one embodiment of the utility model, the flame adjustable type smoke gas internal circulation combustor aims at the problems in the prior art, and is provided with a staged combustion mechanism which is divided into a central stage, a primary stage and a secondary stage, and fuel is subjected to staged proportion drawing to obtain 1: 3: 6, and carry out even rational arrangement with fuel in at each level, the purpose is more even with fuel combustion heat release, prevent that the burning high temperature region from concentrating on, the burning power field is stable, still be provided with entrainment flue gas mechanism in addition, when combustion-supporting wind passes through combustion-supporting wind passageway casing 1, fire-retardant air contracts at the exit position promptly, increase air flow rate, the front end fuel burning produces pressure differential at the position of contracting promptly, and can adjust the velocity of flow after air and the flue gas mix in entrainment flue gas mechanism department, make the flue gas produce the backward flow at the position of contracting promptly like this, the flue gas mixes at the front end with combustion-supporting wind and participates in the burning, combustion-supporting wind is more even with the fuel mixture, reduce the unnecessary consumption of burning heat, thereby reduce nitrogen oxide's production.
As shown in fig. 2, as a preferred embodiment of the present invention, the center stage combustion assembly includes:
a central rotational flow stable combustion structure 4;
the central gas adjustable nozzle 5 is used for controlling and adjusting the shape of flame;
wherein, the stable burning structure 4 of central whirl includes:
swirl vanes 14;
and an inner ring plate 15 and an outer ring plate 16 installed at both inner and outer sides of the swirl vanes 14.
In an embodiment of the utility model, the secondary combustion assembly comprises:
a primary gas chamber 3;
the primary gas adjustable nozzle 6 is used for controlling and adjusting the shape of flame;
wherein the primary gas chamber 3 comprises:
the primary gas branch pipe annular cavity 12 is connected to the front part of the primary gas pipe 11;
and a central pipe 13 located inside the primary gas pipe 11.
Make angle, position, direction to adjust through adjustable spout 5 of central gas and the adjustable spout 6 of a gas to match according to boiler furnace, and adjustable spout 5 of central gas can independently change or the shutoff, satisfy wider gas pressure scope.
In an embodiment of the utility model the secondary combustion assembly comprises:
a secondary gas sudden-shrinkage cavity pipe 7;
the secondary gas space adjustable injection body 8 is connected with the secondary gas sudden shrinkage cavity body pipe 7 and is used for adjusting the gas flow rate, promoting the smoke to flow back and driving the injected smoke to participate in combustion;
wherein, the secondary gas sudden-shrinkage cavity pipe 7 comprises a secondary gas pipe 17 and a sudden-shrinkage nozzle 18.
The secondary combustion assembly can ensure that secondary gas is injected with certain jet flow outlet momentum, and smoke participates in combustion through the secondary gas space adjustable injection body 8.
In the embodiment of the utility model, the smoke entrainment mechanism comprises an inner layer smoke entrainment shell 2;
wherein, the inner layer entrainment smoke shell 2 comprises a support body 9 and an inner layer entrainment conical ring 10.
The combustion-supporting air passes through the combustion-supporting air channel shell 1, the flame-retardant air is subjected to rapid shrinkage at the outlet position of the shell, the air flow rate is increased, the fuel at the front end is combusted to generate pressure difference at the rapid shrinkage position, the flow rate after the air and the flue gas are mixed can be adjusted at the inner layer rolling conical ring 10 of the inner layer rolling flue gas shell 2, the flue gas is enabled to generate backflow at the rapid shrinkage front end, and the flue gas and the combustion-supporting air are mixed at the front end to participate in combustion.
The backflow injection of the flue gas is carried out through the two modes, 20% -30% of the backflow amount of the flue gas is guaranteed, the flue gas participates in combustion to dilute the oxygen content of the combustion air, the combustion air and the fuel are mixed more uniformly, the redundant consumption of combustion heat is reduced, and therefore the generation of nitrogen oxides is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A flame adjustable flue gas internal circulation burner, characterized in that the burner comprises:
a combustion supporting air passage housing;
the staged combustion mechanism is arranged on the combustion-supporting air channel shell and used for reasonably arranging fuel and uniformly releasing heat;
the smoke entrainment mechanism is used for adjusting the mixing of air and fuel to promote the smoke to generate backflow to participate in combustion;
wherein, the staged combustion mechanism includes a center-stage combustion assembly, a primary combustion assembly and a secondary combustion assembly.
2. The flame adjustable flue gas inner circulation burner of claim 1, wherein the center stage combustion assembly comprises:
a central rotational flow stable combustion structure;
the central gas adjustable nozzle is used for controlling and adjusting the shape of flame;
wherein, the stable structure of burning of center whirl includes:
a swirl vane;
and the inner ring plate and the outer ring plate are arranged on the inner side and the outer side of the swirl vanes.
3. The flame adjustable flue gas internal circulation burner of claim 1, wherein the secondary combustion assembly comprises:
a primary gas chamber;
the primary gas adjustable nozzle is used for controlling and adjusting the shape of flame;
wherein, a gas chamber includes:
the primary gas branch pipe annular cavity is connected to the front part of the primary gas pipe;
the central pipe is positioned inside the main primary gas pipe.
4. The flame adjustable flue gas internal circulation burner of claim 1, wherein the two secondary combustion assemblies comprise:
a secondary gas sudden shrinkage cavity pipe;
the secondary gas space adjustable injection body is connected with the secondary gas sudden shrinkage cavity pipe and is used for adjusting the gas flow rate, promoting the smoke to flow back and driving the injected smoke to participate in combustion;
wherein, the secondary gas sudden shrinkage cavity body pipe comprises a secondary gas pipe and a sudden shrinkage nozzle.
5. The flame adjustable internal flue gas recirculation burner of claim 1, wherein the entrainment flue gas mechanism comprises an inner entrainment flue gas housing;
wherein, the inner layer entrainment flue gas casing includes supporter and inner layer entrainment toper ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121885105.1U CN215765094U (en) | 2021-08-12 | 2021-08-12 | Flame adjustable type smoke internal circulation combustor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121885105.1U CN215765094U (en) | 2021-08-12 | 2021-08-12 | Flame adjustable type smoke internal circulation combustor |
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| CN215765094U true CN215765094U (en) | 2022-02-08 |
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| CN202121885105.1U Active CN215765094U (en) | 2021-08-12 | 2021-08-12 | Flame adjustable type smoke internal circulation combustor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117968065A (en) * | 2023-11-17 | 2024-05-03 | 克雷登热能设备(浙江)有限公司 | Ultralow-nitrogen combustion system and method adapting to fuel composition change |
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2021
- 2021-08-12 CN CN202121885105.1U patent/CN215765094U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117968065A (en) * | 2023-11-17 | 2024-05-03 | 克雷登热能设备(浙江)有限公司 | Ultralow-nitrogen combustion system and method adapting to fuel composition change |
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