CN207778429U - A kind of multi-functional positive and negative diffusion flame burners - Google Patents
A kind of multi-functional positive and negative diffusion flame burners Download PDFInfo
- Publication number
- CN207778429U CN207778429U CN201721693806.9U CN201721693806U CN207778429U CN 207778429 U CN207778429 U CN 207778429U CN 201721693806 U CN201721693806 U CN 201721693806U CN 207778429 U CN207778429 U CN 207778429U
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- China
- Prior art keywords
- burner
- outer tube
- middle pipe
- air inlet
- liquid
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Abstract
The utility model provides a kind of multi-functional positive and negative diffusion flame burners, the burner inner tube being arranged from inside to outside, burner middle pipe, burner including annular coaxial time outer tube, burner outer tube, the channel and independent conveying solid substance powder, liquid, gaseous fuel additive that the burner middle pipe is used to overflow as liquid fuel when because liquid fuel flow is excessive or imperfect combustion phenomenon occurs so as to cause spilling.
Description
Technical field
The utility model is related to a kind of Burner Technology, especially a kind of multi-functional positive and negative diffusion flame burners.
Background technology
The characteristics of diffusion flame burner is flameholding, reliable for operation, simple in structure, and there is no tempering for diffusion combustion flame
Problem and it is not susceptible to de- fiery phenomenon.Diffusion combustion can be divided into positive diffusion combustion and back-diffusion is burnt two kinds.For gas and
Liquid fuel, both combustion modes can be applied to the observation of flame structure, the analysis of combustion process and flame synthesis
The fields such as research.
The innermost layer of positive diffusion flame burners is fuel channel, and secondary outer layer is air duct, and outermost layer is protection nitrogen
Channel.The innermost layer of back-diffusion flame burner is air duct, and secondary outer layer is fuel channel, and outermost layer is that protection nitrogen is logical
Road.Wherein, outermost protection nitrogen can prevent oxidant from environment seepage, and play the role of stable flame.For
Gas (or prevapourising gas) fuel, the substances such as gas in back-diffusion flame are not mainly by passing through the thermal decomposition material group of zoneofoxidation
At.Conversion zone in flame is used as " absorbent " so that the oxygen molar fraction in flame gas reduces, and has in carbon forming process
Effect ground detached with oxidation process so that generate jet-black also than normal diffusion flame when it is less, be more advantageous to flame synthesize.
Utility model content
The purpose of this utility model is to provide a kind of multi-functional positive and negative diffusion flame burners, gas or liquid fuel are logical
Relatively stable flame can be formed by crossing the burner.
Realize that the technical solution of the utility model aim is：A kind of multi-functional positive and negative diffusion flame burners, including annular
The coaxial burner inner tube being arranged from inside to outside, burner middle pipe, burner time outer tube, burner outer tube, the burner
Middle pipe is used for when because liquid fuel flow is excessive or imperfect combustion phenomenon occurs so as to cause spilling as liquid fuel
The channel of spilling and independent conveying solid substance powder, liquid, gaseous fuel additive.
The utility model compared with prior art, has the following advantages：(1) the burner structure letter of the utility model design
It is single, it is a kind of burner suitable for gas and liquid fuel combustion, relatively stable flame can be formed；(2) when because of liquid
When fuel flow rate is excessive or imperfect combustion phenomenon occurs so as to cause overflowing, the protective device of the burner can prevent liquid
Phenomena such as body flows into other pipelines such as air duct etc. of burner, the blocking for avoiding possibility from occurring or flame instability；(3)
The independent tubes of burner design can be used for the conveying of all kinds of fuel additives such as solid powder, liquid, gas.
The utility model is further described with reference to the accompanying drawings of the specification.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
In conjunction with Fig. 1, a kind of multi-functional positive/negative diffusion flame burners include the combustion of annular coaxial being arranged from inside to outside
Burner inner tube 4, burner middle pipe 3, burner time outer tube 2 and burner outer tube 1.Bend pipe is arranged in 4 inlet end of burner inner tube
The inner tube air inlet 9 of shape, 3 inlet end of burner middle pipe are provided with the middle pipe air inlet 8 of valve, burner time 2 air inlet of outer tube
End two radial directions of setting and about axisymmetric secondary outer tube air inlet 7,1 inlet end of burner outer tube be arranged four radial directions and about
The angle of axisymmetric outer tube air inlet 6, two neighboring air inlet is 90 °.
For fluid combustion, burner middle pipe 3 can play the role of stable flame.It is different from gaseous fuel
Burning, since the flame that the presence for phenomena such as evaporating, spreading can result in is not sufficiently stable when liquid fuel combustion.In burner
The presence of pipe 3 can extend to 3 edge of burner middle pipe from 4 edge of burner inner tube with pilot flame face, increase the transverse direction of flame
Size root diameter (RD), makes flame tend towards stability.Meanwhile burner middle pipe 3 can also play no-spill protective effect.When because of liquid
When fluid fuel flow is excessive or imperfect combustion phenomenon occurs so as to cause overflowing, liquid fuel can pass through burner middle pipe
Phenomena such as 3 outflow burners, other channels of blocking burner for avoiding possibility from occurring.In addition, for the burning of gaseous fuel, combustion
Burner middle pipe 3 can be as the independent conveyance conduit of all kinds of fuel additives such as solid powder, liquid, gas.
Claims (5)
1. a kind of multi-functional positive and negative diffusion flame burners, including the burner inner tube (4) of annular coaxial being arranged from inside to outside,
Burner time outer tube (2), burner outer tube (1), which is characterized in that further include being set to burner inner tube (4) and burner
Coaxial burner middle pipe (3) between outer tube (2), the burner middle pipe (3) are used for
It is overflowed as liquid fuel so as to cause when overflowing when because liquid fuel flow is excessive or imperfect combustion phenomenon occurs
Channel, and
Independent conveying solid substance powder, liquid, gaseous fuel additive.
2. burner according to claim 1, which is characterized in that the interior of elbow-shaped is arranged in burner inner tube (4) inlet end
Pipe air inlet (9).
3. burner according to claim 1, which is characterized in that burner middle pipe (3) inlet end is provided with valve
Middle pipe air inlet (8).
4. burner according to claim 1, which is characterized in that two radial directions are arranged in burner time outer tube (2) inlet end
And about axisymmetric secondary outer tube air inlet (7).
5. burner according to claim 1, which is characterized in that burner outer tube (1) inlet end be arranged four radial directions and
About axisymmetric outer tube air inlet (6), the angle of two neighboring air inlet is 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721693806.9U CN207778429U (en) | 2017-12-08 | 2017-12-08 | A kind of multi-functional positive and negative diffusion flame burners |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721693806.9U CN207778429U (en) | 2017-12-08 | 2017-12-08 | A kind of multi-functional positive and negative diffusion flame burners |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207778429U true CN207778429U (en) | 2018-08-28 |
Family
ID=63231838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721693806.9U Active CN207778429U (en) | 2017-12-08 | 2017-12-08 | A kind of multi-functional positive and negative diffusion flame burners |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207778429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006615A (en) * | 2017-12-08 | 2018-05-08 | 南京理工大学 | A kind of multi-functional positive and negative diffusion flame burners |
-
2017
- 2017-12-08 CN CN201721693806.9U patent/CN207778429U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006615A (en) * | 2017-12-08 | 2018-05-08 | 南京理工大学 | A kind of multi-functional positive and negative diffusion flame burners |
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