CN219640247U - Built-in natural gas exhaust type burner of flue - Google Patents
Built-in natural gas exhaust type burner of flue Download PDFInfo
- Publication number
- CN219640247U CN219640247U CN202320628722.6U CN202320628722U CN219640247U CN 219640247 U CN219640247 U CN 219640247U CN 202320628722 U CN202320628722 U CN 202320628722U CN 219640247 U CN219640247 U CN 219640247U
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- Prior art keywords
- burner
- combustion
- gas
- flue
- air channel
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000003345 natural gas Substances 0.000 title claims abstract description 25
- 230000002093 peripheral effect Effects 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 239000002737 fuel gas Substances 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 28
- 239000003546 flue gas Substances 0.000 abstract description 28
- 238000002485 combustion reaction Methods 0.000 abstract description 20
- 239000007789 gas Substances 0.000 abstract description 20
- 230000001276 controlling effect Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Abstract
The utility model discloses a natural gas exhaust type burner with a built-in flue, which comprises a gas main path, a gas branch path, a regulating valve, an exhaust type burner unit, an air duct, a central combustion-supporting air channel, a peripheral combustion-supporting air channel, a regulating air door and a burner body, wherein the central combustion-supporting air channel is arranged on the main path; the utility model is different from the existing burner in that the gas inlet of the natural gas exhaust burner with a built-in flue is provided with a gas regulating valve for controlling central flame, the diameter and the length of the combustion flame are controlled by proportionally regulating the air quantity of a combustion-supporting fan of the system, the air inlet device adopts a direct mixing type, a rectangular structure is adopted, a welding cyclone device is adopted, the purposes of turbulent flow and uniform mixing of raw flue gas and high-temperature gas are ensured, the temperature of the exhaust burner can be reduced by the low-temperature raw flue gas, and the strength of the burner is protected.
Description
Technical Field
The utility model relates to the technical field of combustors, in particular to a natural gas exhaust type burner with a built-in flue.
Background
The natural gas exhaust burner with the built-in flue removes a high-temperature flue through the built-in combustion head, and reduces heat loss to the minimum. The built-in natural gas exhaust burner of flue does not need the combustion channel of traditional meaning or the hot-blast furnace carries out extra air distribution, or does not need extra air distribution fan, because the higher characteristic of natural gas calorific value, the volume of combustor is less, and directly put exhaust burner in the flue, has reduced steady burning device, has further reduced flue heating device's volume to reduce the influence to flue sectional area, reduce the resistance influence to former flue gas system. The gas burnt by the built-in natural gas burner in the flue through the air inlet device is mixed with the raw flue gas at the highest temperature, so that the high-temperature property of the natural gas combustion heat value is fully utilized, and meanwhile, compared with other gases with lower heat value, the pipe diameter of the gas can be reduced, and the investment of a user in a gas matched valve group is reduced; in addition, the structure can fully promote the mixing of the smoke through the turbulent flow design of the nozzle direction of the peripheral injection pipe and the peripheral combustion-supporting air channel, and a user can avoid adding a turbulent flow device at the rear part of the combustion area; greatly reduces the user reconstruction and operation cost.
Disclosure of Invention
The utility model aims to solve the problems and provides a natural gas exhaust burner with a built-in flue.
In order to solve the problems, the utility model provides a technical scheme that: a natural gas exhaust type burner with a built-in flue comprises a gas main path, a gas branch path, a regulating valve, an exhaust type burner unit, an air duct, a central combustion-supporting air channel, a peripheral combustion-supporting air channel, a regulating air door and a burner body; the burner body is arranged in the original flue; the right side of the lower end of the burner body is communicated with the air duct; a central combustion-supporting air channel and a peripheral combustion-supporting air channel are respectively arranged in the air channel; the central combustion-supporting air channel and the peripheral combustion-supporting air channel are connected with the burner body; a plurality of row-type burner units are arranged in the burner body; the row-type burner units are communicated with a fuel gas branch; the other ends of the fuel gas branches are communicated with a fuel gas main path; the air duct is provided with a regulating air door, and the fuel gas main path is provided with a regulating valve.
Preferably, the number of the row-type burner units is 5.
Preferably, the central combustion-supporting air channel and the peripheral combustion-supporting air channel are provided with air distribution adjusting mechanisms.
Preferably, an injection pipe is arranged in the burner body, and a wind shield cap is arranged on the outer side of the injection pipe.
The utility model has the beneficial effects that: the utility model is different from the existing burner, the gas inlet of the flue built-in natural gas exhaust burner is provided with a gas regulating valve for controlling central flame, the diameter and the length of the combustion flame are controlled by proportionally regulating the air quantity of the system combustion-supporting fan, the air inlet device adopts a direct mixing type structure, a rectangular structure is adopted, a welding cyclone device is used for ensuring that raw flue gas and high-temperature gas form turbulent flow, the purpose of uniform mixing is achieved, the low-temperature raw flue gas can reduce the temperature of the exhaust burner and protect the strength of the burner, meanwhile, the air inlet device is directly arranged on the original flue, the additional air distribution is not needed, meanwhile, part of combustion-supporting air is saved, the combustion temperature is improved, the gas combusted by the natural gas exhaust burner is mixed with the raw flue gas at the highest temperature through the distribution of the natural gas exhaust burner, the contact area of combustion equipment in the flue gas can be increased, the system resistance of the raw flue gas is reduced, the mixing efficiency of the low-temperature flue gas and the high-temperature flue gas generated by combustion is improved, the purpose of heating up the flue gas is also realized, and the investment of customer equipment, the gas valve bank and the turbulent flow device is also reduced.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic top view of fig. 1 according to the present utility model.
Fig. 3 is a schematic side view of the structure of fig. 1 according to the present utility model.
1-a fuel gas main path; 2-a gas branch; 3-regulating valve; a 4-row burner unit; 5-an air duct; 6-a central combustion-supporting air channel; 7-peripheral combustion-supporting air channels; 8-adjusting a throttle; 9-a burner body; 10-original flue.
Detailed Description
As shown in fig. 1 to 3, the present embodiment adopts the following technical scheme: a natural gas exhaust type burner with a built-in flue comprises a gas main path 1, a gas branch path 2, a regulating valve 3, an exhaust type burner unit 4, an air duct 5, a central combustion-supporting air channel 6, a peripheral combustion-supporting air channel 7, a regulating air door 8 and a burner body 9; the burner body 9 is arranged in the original flue 10; the right side of the lower end of the burner body 9 is communicated with the air duct 5; a central combustion-supporting air channel 6 and a peripheral combustion-supporting air channel 7 are respectively arranged in the air channel 5; the central combustion-supporting air channel 6 and the peripheral combustion-supporting air channel 7 are connected with the burner body 9; a plurality of row-type burner units 4 are arranged in the burner body 9; the row-type burner units 4 are communicated with a fuel gas branch 2; the other ends of the fuel gas branches 2 are communicated with the fuel gas main path 1; the air duct 5 is provided with a regulating air door 8, and the fuel gas main path 1 is provided with a regulating valve 3.
Wherein the number of the row-type burner units 4 is 5; the central combustion-supporting air channel 6 and the peripheral combustion-supporting air channel 7 are respectively provided with an air quantity distribution adjusting mechanism; an injection pipe is arranged in the burner body 9, and a wind shield cap is arranged on the outer side of the injection pipe.
The working principle of the utility model is as follows: the natural gas is distributed to the exhaust nozzle jet device through a pipeline, the natural gas is sprayed into the injection pipe through a fine spray pipe at the upper side of the cavity, the combustion-supporting air in the primary air channel is sprayed and sucked at a high flow speed of the natural gas to participate in combustion, the central combustion-supporting air channel is equally divided into corresponding number of exhaust nozzle units and surrounds the periphery of the exhaust nozzle jet pipe, so that the natural gas is sprayed and sucked with enough combustion-supporting air to enable the combustion to be stable, each nozzle unit is provided with a wind blocking cap at the outlet end of the peripheral injection pipe according to the trend of the flue gas, the change of the combustion and the flow direction of the combustion flue gas is realized by controlling the opening direction of the wind blocking cap, the effect of the combustion of the outer ring nozzle to generate the flow disturbance of the flue gas and the peripheral combustion-supporting air is achieved, and the full mixing of the high-temperature flue gas and the raw flue gas is promoted; the injection pipe in the nozzle area at the central part can be provided with no wind cap, so that the central combustion stability of the burner is ensured, a flue gas mixing area with gradually reduced temperature from the burner center to the original flue wall is formed, and the flue gas mixing efficiency is greatly improved; the central area adopts a direct injection mode, the peripheral nozzles adopt an outward-divergent arrangement mode, and the temperature of the central combustion area can be reduced, so that the formation of NOx is reduced; the peripheral combustion-supporting air channel supplements low-oxygen-content flue gas to be mixed with the peripheral gas area flue gas under the action of the outlet rotational flow, so that the flue gas quantity of a combustion area is indirectly increased, and the flame center temperature is further reduced; the combustion-supporting fan is used for supplying a certain amount of natural air, primary air and secondary rotational flow air quantity are regulated through the primary air regulating air door, the combustion-supporting air is preheated by raw flue gas in the air inlet device of the lower area of the combustion head through the primary air channel, then the primary air channel is sprayed out to participate in combustion and flue gas turbulence, the secondary air channel is designed into a rotational flow structure, the secondary air drives peripheral flame to spray out, and the combustion is promoted to produce the mixture of flue gas and raw flue gas while the increase of NOx output caused by the excessive concentration of flame is avoided. The method can ensure that the natural gas is fully combusted, can efficiently mix the high-temperature flue gas with the original low-temperature flue gas, and avoids the addition of a turbulent flow device in a flue of a customer.
In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
While the basic principles and main features of the present utility model and advantages of the present utility model have been shown and described, it will be understood by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which are described in the foregoing specification merely illustrate the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined in the appended claims and their equivalents.
The control mode of the utility model is controlled by manually starting and closing the switch, the wiring diagram of the power element and the supply of the power supply are common knowledge in the field, and the utility model is mainly used for protecting the mechanical device, so the utility model does not explain the control mode and the wiring arrangement in detail.
Claims (4)
1. A flue built-in natural gas exhaust type burner is characterized in that: the burner comprises a fuel gas main path (1), a fuel gas branch path (2), a regulating valve (3), a row-type burner unit (4), an air duct (5), a central combustion-supporting air channel (6), a peripheral combustion-supporting air channel (7), a regulating air door (8) and a burner body (9);
the burner body (9) is arranged in the original flue (10);
the right side of the lower end of the burner body (9) is communicated with the air duct (5);
a central combustion-supporting air channel (6) and a peripheral combustion-supporting air channel (7) are respectively arranged in the air channel (5);
the central combustion-supporting air channel (6) and the peripheral combustion-supporting air channel (7) are connected with the burner body (9);
a plurality of row-type burner units (4) are arranged in the burner body (9);
the row-type burner units (4) are communicated with a fuel gas branch (2);
the other ends of the fuel gas branches (2) are communicated with the fuel gas main path (1);
a regulating air door (8) is arranged on the air duct (5), and a regulating valve (3) is arranged on the fuel gas main path (1).
2. The flue-built-in natural gas exhaust burner of claim 1, wherein: the number of the row-type burner units (4) is 5.
3. The flue-built-in natural gas exhaust burner of claim 1, wherein: and the central combustion-supporting air channel (6) and the peripheral combustion-supporting air channel (7) are respectively provided with an air quantity distribution adjusting mechanism.
4. The flue-built-in natural gas exhaust burner of claim 1, wherein: an injection pipe is arranged in the burner body (9), and a wind blocking cap is arranged on the outer side of the injection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320628722.6U CN219640247U (en) | 2023-03-28 | 2023-03-28 | Built-in natural gas exhaust type burner of flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320628722.6U CN219640247U (en) | 2023-03-28 | 2023-03-28 | Built-in natural gas exhaust type burner of flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219640247U true CN219640247U (en) | 2023-09-05 |
Family
ID=87808287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320628722.6U Active CN219640247U (en) | 2023-03-28 | 2023-03-28 | Built-in natural gas exhaust type burner of flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219640247U (en) |
-
2023
- 2023-03-28 CN CN202320628722.6U patent/CN219640247U/en active Active
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