CN107906514A - A kind of Flat flame low NO - Google Patents
A kind of Flat flame low NO Download PDFInfo
- Publication number
- CN107906514A CN107906514A CN201711263341.8A CN201711263341A CN107906514A CN 107906514 A CN107906514 A CN 107906514A CN 201711263341 A CN201711263341 A CN 201711263341A CN 107906514 A CN107906514 A CN 107906514A
- Authority
- CN
- China
- Prior art keywords
- air hose
- air
- flat flame
- gas pipe
- inlet port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007789 gas Substances 0.000 claims abstract description 34
- 239000000567 combustion gas Substances 0.000 claims abstract description 28
- 238000009987 spinning Methods 0.000 claims abstract description 26
- 239000011449 brick Substances 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 230000004323 axial length Effects 0.000 claims description 3
- 239000002737 fuel gas Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 23
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- 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
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- 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
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
Landscapes
- 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 kind of Flat flame low NO, including Gas Pipe, exports combustion gas：Air hose, delivery air；Gas Pipe is nested in air hose, and Gas Pipe inner ring circular array shows some spinning disks；Spinning disk possesses helical angle；The ejecting end circular array of air hose shows some pilot holes；Air hose is connected with inlet port, and inlet port direction is vertical with air hose own axes direction, and inlet port is along the projection of itself normal direction positioned at the side of air hose own axes.The injection of air hose and Gas Pipe is terminated with opening brick, and the open lumen diameter for the brick that is open projects direction along combustion gas and gradually increases.It is open in the axial sectional view of brick, the profile busbar of open lumen is parabola.The helical angle of spinning disk is 45 °.Using the invention so that helically being moved before air and fuel gas injection, easy to be uniformly mixed after ejecting, burning it is abundant, while increase the radial width of flame, generate flat flame.
Description
Technical field
The present invention relates to burner arts, and in particular to a kind of Flat flame low NO.
Background technology
Heat treatment needs accurate temperature consistency, is particularly realized on large-scale kiln increasingly difficult.Acquisition to flat flame
Possess certain difficulty, combustion gas possesses higher injection pressure with air, since the speed ejected is higher, thus flame it is axial compared with
It is long.
The content of the invention
The problem to be solved in the present invention is to provide a kind of Flat flame low NO so that before air and fuel gas injection
Helically move, easy to be uniformly mixed after ejecting, burning it is abundant, while increase the radial width of flame, generate flat flame.
To solve the above problems, the present invention provides a kind of Flat flame low NO, to reach above-mentioned purpose, present invention solution
Certainly technical solution is used by its technical problem：
A kind of Flat flame low NO, including：Gas Pipe, exports combustion gas：Air hose, delivery air；Gas Pipe is nested
In air hose, Gas Pipe inner ring circular array shows some spinning disks；Spinning disk possesses helical angle；The ejecting end annular of air hose
Array has some pilot holes；Air hose is connected with inlet port, and inlet port direction is vertical with air hose own axes direction, inlet port
Along the projection of itself normal direction positioned at the side of air hose own axes.
It is using the beneficial effect of above-mentioned technical proposal：Air and combustion gas from pipeline before ejecting, both
Through in screw, and the hand of spiral is identical, when air from air hose, combustion gas ejected from Gas Pipe when, both are mutual
Collide and wind and mix, fully then burning is abundant for mixing.Also because air and combustion gas are provided with circumferential rotation component velocity, institute
With mixed flame because centrifugal force easily thinks that surrounding is spread out, the width of flame broadens, and meets operation needs.
As a further improvement on the present invention, the injection of air hose and Gas Pipe is terminated with opening brick, the opening for the brick that is open
Intracavity diameter projects direction along combustion gas and gradually increases.
It is using the beneficial effect of above-mentioned technical proposal：Horn-like opening brick can change flame profile, make flame fast
Speed is radially spread out along surrounding.
Further as the present invention is improved, and in the axial sectional view for the brick that is open, the profile busbar of open lumen is throwing
Thing line.
It is using the beneficial effect of above-mentioned technical proposal：Parabolic profile, further such that flame grandson spreads out rapidly, finally
Form flat flame.Since flame is spread out rapidly, flame flow velocity declines, and nitrogen oxides produces relatively low.
As the further improvement of the present invention, the ejecting end of Gas Pipe is fixedly connected with air guide plate, the air
The diameter of guide plate is less than the internal diameter of air hose.
It is using the beneficial effect of above-mentioned technical proposal：Air guide plate is in disc-shaped, its subject plane is perpendicular to air
Tube axis direction, plays air certain barrier guiding role, promotes air radial motion, and air guide plate can fix combustion
Tracheae, ensures the locus of Gas Pipe.
As the further improvement of the present invention, air guide plate in air hose ejecting end axial direction with possessing gap.
It is using the beneficial effect of above-mentioned technical proposal：Air can be flat beneficial to being formed along gap to radial diffusion
Flame.Air can be rotated into combustion chamber, flow through the simply partial air in air guide plate hole.
As the further improvement of the present invention, pilot hole is in circular hole, and pilot hole is located in air guide plate；Pilot hole
Axis projections be integrally incorporated in opening brick open lumen axis projections in.
It is using the beneficial effect of above-mentioned technical proposal：The pilot hole of circular hole is easy to outlet, and pilot hole is located at air and leads
Air guide plate material is just saved on to plate, air and combustion gas can enter in open lumen, flame spread out.
As the further improvement of the present invention, spinning disk radial height is 20mm, axial length 100mm, and thickness is
3mm。
It is using the beneficial effect of above-mentioned technical proposal：The length of spinning disk, width to produce combustion gas preferable rotation
Effect is flowed, and is unlikely to produce the transporting resistance of too many combustion gas, the spinning disk intensity of 3mm thickness is enough.
As the further improvement of the present invention, the helical angle of spinning disk is 45 °.
It is using the beneficial effect of above-mentioned technical proposal：45 ° of angle causes combustion gas and air is in preferably screw,
Circumferential rotation and axial speed are proper.
As the further improvement of the present invention, the shape of inlet port is semicircle.
It is using the beneficial effect of above-mentioned technical proposal：Semicircular inlet port so that into gas from enter pipe
Axis side enter, due to enter gas itself speed reason so that after entrance, moved along inboard wall of tube body rotating screw.
Semicircular inlet port possesses larger aperture area when being and meeting this spiral condition similarly hereinafter so that gas conveying is smooth.
As the further improvement of the present invention, semicircle is formed for a semi arch and line segment, line segment edge into
Projection in entrance normal orientation coincides with the own axes of air hose, and semicircular radius is equal to the radius of air hose.
It is using the beneficial effect of above-mentioned technical proposal：Semicircular to reach maximum into open area, transmission gas is smooth.
As the further improvement of the present invention, the quantity of spinning disk and pilot hole is unequal.
It is using the beneficial effect of above-mentioned technical proposal：So that the combustion gas into mistake spinning disk and the air from air hose injection
It is not completely by same circumferentially distributed so that combustion gas and the mixing of air are more abundant.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the stereogram of one embodiment of the present invention；
Fig. 2 is the stereogram of another embodiment of the present invention；
Fig. 3 is the stereogram of another embodiment of the present invention；
Fig. 4 is the sectional view of another embodiment of the present invention；
Fig. 5 is the stereogram of another embodiment of the present invention；
Fig. 6 is the stereogram of another embodiment of the present invention；
Fig. 7 is the sectional view of another embodiment of the present invention.
1- pilot holes；2- Gas Pipes；3- inlet ports；4- spinning disks；5- air guide plates；6- opening bricks；7- air hoses；8-
Gap.
Embodiment
With reference to specific embodiment, present disclosure is described in further detail：
In order to reach the purpose of the present invention, a kind of Flat flame low NO, including：Export the Gas Pipe 2 of combustion gas：Output
The air hose 7 of air；Gas Pipe 2 is nested in air hose 7, and 2 inner ring circular array of Gas Pipe shows some spinning disks 4；Spinning disk 4
Possesses helical angle；The ejecting end circular array of air hose 7 shows some pilot holes 1；Air hose 7 is connected with inlet port 3, inlet port 3
Direction is vertical with 7 own axes direction of air hose, and inlet port 3 is along the projection of itself normal direction positioned at the one of 7 own axes of air hose
Side.
Spinning disk 4 is in spatial warping, and air hose 7 is straight tube.Air hose 7 is located at the outside of Gas Pipe 2.Air is then firing
Transmitted in space between 7 inner ring of 2 outer ring of tracheae and air hose.
It is using the beneficial effect of above-mentioned technical proposal：Air and combustion gas from pipeline before ejecting, both
Through in screw, and the hand of spiral is identical, when air from air hose, combustion gas ejected from Gas Pipe when, both are mutual
Collide and wind and mix, fully then burning is abundant for mixing.Also because air and combustion gas are provided with circumferential rotation component velocity, institute
With mixed flame because centrifugal force easily thinks that surrounding is spread out, the width of flame broadens, and meets operation needs.Enter from inlet port
Air because the effect of tangential force can advance in air hose inside spin.
In other embodiments of the present invention, the injection of air hose 7 and Gas Pipe 3 is terminated with opening brick 6, and be open brick
6 open lumen diameter projects direction along combustion gas and gradually increases.
It is using the beneficial effect of above-mentioned technical proposal：Horn-like opening brick can change flame profile, make flame fast
Speed is radially spread out along surrounding.
In other embodiments of the present invention, as shown in figure 4, in the axial sectional view of opening brick 6, open lumen
Profile busbar is parabola.
Direction is projected along combustion gas, per unit is in, more and more, the open lumen of the diameter increase of open lumen
In horn-like.
It is using the beneficial effect of above-mentioned technical proposal：Parabolic profile, further such that flame grandson spreads out rapidly, finally
Form flat flame.Since flame is spread out rapidly, flame flow velocity declines, and nitrogen oxides produces relatively low.
In other embodiments of the present invention, as shown in fig. 6, the ejecting end of Gas Pipe 2 is fixed with air guide plate 5
Connection, air hose 7 are not fixed with air guide plate 5, and air hose ejecting end 7 is upwardly formed gap 8 with 5 axis of air guide plate.
As shown in Figure 6, Figure 7, the diameter of air guide plate 5 is less than the diameter of air hose 7.
It is using the beneficial effect of above-mentioned technical proposal：Air guide plate is in disc-shaped, its subject plane is perpendicular to air
Tube axis direction, plays air certain barrier guiding role, promotes air radial motion, and air guide plate can fix combustion
Tracheae, ensures the locus of Gas Pipe.Air can be along gap to radial diffusion, beneficial to forming flat flame.Air
Combustion chamber can be rotated into, flows through the simply partial air in air guide plate hole.The locus of air guide plate is set
The air moved along air hose inside spin is partly continued on, and the continuation of opening brick inner cavity is spiral and radial expansion is moved.
In other embodiments of the present invention, pilot hole 1 is in circular hole, and pilot hole 1 is located in air guide plate 5；
The axis projections of pilot hole 1 are integrally incorporated in the axis projections of the open lumen of opening brick 6.
It is using the beneficial effect of above-mentioned technical proposal：The pilot hole of circular hole is easy to outlet, and pilot hole is located at air and leads
Air guide plate material is just saved on to plate, air and combustion gas can enter in open lumen, flame spread out.
In other embodiments of the present invention, 4 radial height of spinning disk is 20mm, axial length 100mm, thickness
For 3mm.
It is using the beneficial effect of above-mentioned technical proposal：The length of spinning disk, width to produce combustion gas preferable rotation
Effect is flowed, and is unlikely to produce the transporting resistance of too many combustion gas, the spinning disk intensity of 3mm thickness is enough.
In other embodiments of the present invention, the helical angle of spinning disk 4 is 45 °.
It is using the beneficial effect of above-mentioned technical proposal：45 ° of angle causes combustion gas and air is in preferably screw,
Circumferential rotation and axial speed are proper.
In other embodiments of the present invention, the shape of inlet port 3 is semicircle.
It is using the beneficial effect of above-mentioned technical proposal：Semicircular inlet port so that into gas from enter pipe
Axis side enter, due to enter gas itself speed reason so that after entrance, moved along inboard wall of tube body rotating screw.
Semicircular inlet port possesses larger aperture area when being and meeting this spiral condition similarly hereinafter so that gas conveying is smooth.
Semicircle inlet port 3 is a semi arch and line segment composition, and line segment is along the throwing in 3 normal orientation of inlet port
Shadow coincides with air hose 7 or the own axes of Gas Pipe 2, and semicircular radius is equal to the radius of air hose 7.
It is using the beneficial effect of above-mentioned technical proposal：Semicircular to reach maximum into open area, transmission gas is smooth.
In other embodiments of the present invention, spinning disk 4 and 1 quantity of pilot hole are unequal.
As shown in figure 5, the such as quantity of spinning disk 4 is six, and the quantity of pilot hole 1 is eight.
It is using the beneficial effect of above-mentioned technical proposal：So that the combustion gas into mistake spinning disk and the air from pilot hole injection
It is not completely by same circumferentially distributed so that combustion gas and the mixing of air are more abundant.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and be carried out, and it is not intended to limit the scope of the present invention, it is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all cover within the scope of the present invention.
Claims (10)
- A kind of 1. Flat flame low NO, it is characterised in that including：Gas Pipe, exports combustion gas；Air hose, delivery air；The Gas Pipe is nested in air hose, and the Gas Pipe inner ring circular array shows some spinning disks；The spinning disk tool Standby helical angle；The ejecting end circular array of the air hose shows some pilot holes；The air hose is connected with inlet port, it is described into Way in is vertical with air hose own axes direction, and the inlet port is located at air hose own axes along the projection of itself normal direction Side.
- A kind of 2. Flat flame low NO according to claim 1, it is characterised in that：The air hose and Gas Pipe Injection is terminated with opening brick, and the open lumen diameter of the opening brick projects direction along combustion gas and gradually increases.
- A kind of 3. Flat flame low NO according to claim 2, it is characterised in that：The axial section view of the opening brick In figure, the profile busbar of the open lumen is parabola.
- A kind of 4. Flat flame low NO according to claim 2, it is characterised in that：The ejecting end of the Gas Pipe with Air guide plate is fixedly connected, and the diameter of the air guide plate is less than the internal diameter of air hose.
- A kind of 5. Flat flame low NO according to claim 4, it is characterised in that：The air guide plate and air Possesses gap in pipe ejecting end axial direction.
- A kind of 6. Flat flame low NO according to claim 4, it is characterised in that：The pilot hole is in circular hole, The pilot hole is located in air guide plate；The axis projections of the pilot hole are integrally incorporated in the axis of the open lumen of opening brick In line projection.
- A kind of 7. Flat flame low NO according to claim 1, it is characterised in that：The spinning disk radial height is 20mm, axial length 100mm, thickness 3mm.
- A kind of 8. Flat flame low NO according to claim 1, it is characterised in that：The helical angle of the spinning disk is 45°。
- A kind of 9. Flat flame low NO according to claim 1, it is characterised in that：The shape of the inlet port is half It is circular.
- A kind of 10. Flat flame low NO according to claim 9, it is characterised in that：It is described semicircle for one and half Circular arc and a line segment are formed, and the line segment is coinciding with the own axes of air hose along the projection in inlet port normal orientation, The semicircular radius is equal to the radius of the air hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711263341.8A CN107906514B (en) | 2017-12-04 | 2017-12-04 | Flat flame low-nitrogen burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711263341.8A CN107906514B (en) | 2017-12-04 | 2017-12-04 | Flat flame low-nitrogen burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107906514A true CN107906514A (en) | 2018-04-13 |
| CN107906514B CN107906514B (en) | 2024-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711263341.8A Active CN107906514B (en) | 2017-12-04 | 2017-12-04 | Flat flame low-nitrogen burner |
Country Status (1)
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| CN (1) | CN107906514B (en) |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| US3748853A (en) * | 1971-10-27 | 1973-07-31 | Nasa | Swirl can primary combustor |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107906514B (en) | 2024-04-09 |
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Inventor after: Dai Senwei Inventor after: Ren Zhuanbo Inventor after: Li Feng Inventor after: Fan Zhonghua Inventor after: Sun Renquan Inventor before: Dai Senwei Inventor before: Ren Zhuanbo Inventor before: Li Feng Inventor before: Fan Zhonghua Inventor before: Sun Renquan |
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