CN207407340U - Low NO - Google Patents
Low NO Download PDFInfo
- Publication number
- CN207407340U CN207407340U CN201721144551.0U CN201721144551U CN207407340U CN 207407340 U CN207407340 U CN 207407340U CN 201721144551 U CN201721144551 U CN 201721144551U CN 207407340 U CN207407340 U CN 207407340U
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- Prior art keywords
- low
- burner plate
- gas pipe
- combustion
- barrel
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Abstract
The utility model provides a kind of low NO, belongs to field of mechanical technique.It solves the problems, such as that the structure of existing burner is complex and efficiency of combustion is relatively low.This low NO, including axially through combustion barrel, Gas Pipe is fixed in combustion barrel, air hose is fixed in Gas Pipe, the cavity of air hose and the cavity of Gas Pipe are isolated, the lower end of air hose is connected with the lower end of combustion barrel, the upper end of Gas Pipe is fixed with burner plate, perforative recirculation hole is laid on burner plate, several horizontally disposed air jet pipes are fixed on burner plate, the inner end of air jet pipe is connected with Gas Pipe, and the outer end of Gas Pipe is connected with combustion barrel, the lower end inside of Gas Pipe is equipped with impeller, and impeller includes several blades being obliquely installed.This low NO has the advantages that simple in structure, efficiency of combustion is higher.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of burner, particularly a kind of low NO.
Background technology
In recent years, China's economic growth is rapid, and energy consumption significantly improves, and the problem of environmental pollution thus brought is also increasingly
It is severe.Environmental Protection in China department requires the pollutant emission limitation that burning generates higher and higher at present.For this purpose, reduce N0 compounds row
It is one of main target of current gas burner design to put.
At present, controlling the main technological means of gas burner NO compounds discharge includes air classification, air swirl with
Direct current wind coordinates, the modes such as combustion gas classification and flue gas recirculation.Air classification and combustion gas classification are limited to existing burner peace
The limitation of size and the limitation of gaseous-pressure and air pressure are filled, the percentage contribution reduced to the discharge of NO compounds is limited.Cause
This, the mode of flue gas recirculation is widely used in gas fired-boiler at present.Traditional flue gas recirculation is in boiler
Perforate after air-introduced machine, it is another that a reflux wind turbine is set to be re-fed into after the flue gas extraction for generation of burning is mixed with air in burner.
Latter aspect is mixed with air in the flue gas for cycling and dilute oxygen concentration, on the other hand in the case where not increasing oxygen concentration
Cold air amount is improved, therefore advantageously reduces reduction flame temperature, is asked when extending combustion reaction, it is local so as to avoid burner hearth
High temperature restrained effectively the generation of NO compounds.
A kind of low nitrogen oxide burner structure (application number as disclosed in Chinese patent literature：
201610750727.0), including internal natural gas passage, combustion-supporting gas channel, radial distribution device, gas spraying perforation, distribution
It is pipe, swirl vane, internal layer combustion-supporting gas channel, interlayer combustion-supporting gas channel, outer layer combustion-supporting gas channel, inner air metering hole, interior
Layer swirl-flow devices and injection straight hole.But the low nitrogen oxide burner structure is complex and efficiency of combustion is relatively low.
The content of the invention
The purpose of this utility model is that there are the above problems for existing technology, it is proposed that a kind of simple in structure, burning
The low NO that efficiency is higher and the discharge capacity of nitrogen oxides is low.
The purpose of this utility model can be realized by following technical proposal：Low NO, including axially through combustion
Cylinder is burnt, Gas Pipe is fixed in the combustion barrel, air hose, the cavity of the air hose is fixed in the Gas Pipe
It is isolated with the cavity of the Gas Pipe, the lower end of the air hose is connected with the lower end of the combustion barrel, special
Sign is that the upper end of the Gas Pipe is fixed with burner plate, and perforative recirculation hole is laid on the burner plate, described
Burner plate on be fixed with several horizontally disposed air jet pipes, the inner end of the air jet pipe is connected with the Gas Pipe,
The outer end of the Gas Pipe is connected with the combustion barrel, and the lower end inside of the Gas Pipe is equipped with impeller, described
Impeller includes several blades being obliquely installed.
The lower end of low NO is connected with wind turbine.At work, air, air warp are blown into combustion barrel by wind turbine
When crossing impeller by the guiding of impeller air is made to increase in the shape of a spiral, partial air enters air hose to the cavity of combustion barrel
Upper end improves the air inflow of combustion barrel upper end.By the air spiral in combustion barrel and with the combustion of the outer end of air jet pipe
Gas is sufficiently mixed burning, has high combustion efficiency, while the air that air hose comes out cools down to combustion barrel, avoids combustion barrel
Upper end generates high temperature dot, and the advantages of improving efficiency of combustion, make the discharge capacity of nitrogen oxides low, while this low NO has
The advantages of structure is relatively simple.
In above-mentioned low NO, the combustion barrel includes the body of tubular and is coaxially connected in body upper end
Diffusion barrel, the burner plate and the air jet pipe be located in the diffusion barrel, and the upper end of the diffusion barrel has
The inclined guide face in side inside, the burner plate are located at the downside of the guide face.The upper end of diffusion barrel has toward inside
Inclined guide face carries out combustion gas and air to guide toward inside, realizes second-time burning, improve efficiency of combustion.
Diffusion barrel phase can be adjusted by being equipped in above-mentioned low NO, between the diffusion barrel and the body
To the adjusting mechanism of the axial distance of body, the adjusting mechanism includes the bar shaped being arranged on the outer body wall
Hole, the bar hole are set parallel to the axis of the body, and the bar hole is equipped with screw, the screw
Inner end is fixedly connected with the body screw thread.Adjust diffusion barrel and body to axial apart from when, by unclamping screw, adjust
Whole diffusion barrel has the advantages that simple in structure and adjusts more convenient to suitable position, then by screw lock.
In above-mentioned low NO, the upper end of the Gas Pipe is equipped with several circulation apertures, and the circulation is small
Hole is located at the upside of the air jet pipe.By setting above-mentioned circulation aperture, light a fire convenient for this low NO, and can be real
The middle part burning of existing combustion barrel, has the advantages that high combustion efficiency and burning is more uniform.
In above-mentioned low NO, the burner plate is in the form of annular discs, and the air jet pipe is with the burner plate
Axis centered on be uniformly arranged, the outer end of the air jet pipe is close to the edge of the burner plate.Using above-mentioned setting, make
On the inside of the upper end of combustion barrel there is more uniform combustion gas, have the advantages that the relatively stable and efficiency of combustion of burning is higher.
In above-mentioned low NO, be additionally provided on the burner plate it is perforative and in strip diversion trench, it is described
Diversion trench be inclined to set, and the diversion trench is uniformly arranged centered on the axis of the burner plate.Pass through setting
Above-mentioned diversion trench makes partial air flow through the rising of burner plate rear screw, improves the mixing of air and combustion gas, and improve combustion
The efficiency of combustion of gas reduces the discharge of nitrogen oxides.
In above-mentioned low NO, the stream of the axis of the rounded and close burner plate of the recirculation hole
The diameter of through hole is less than the diameter of the recirculation hole of the axis away from the burner plate.Since the gas quantity in the outside of burner plate is big
Gas quantity on the inside of burner plate, therefore the air requirements amount on the outside of burner plate is more than burner plate inside air demand, therefore
Recirculation hole uses above-mentioned setting, and combustion gas can be made more sufficiently to burn, improve efficiency of combustion.
In above-mentioned low NO, the blade is uniformly arranged centered on the axis of the combustion barrel.It is logical
Cross the impeller with above-mentioned blade, flow through the air helical cut in combustion barrel and enter in the shape of a spiral at burner plate and with
The combustion gas of air jet pipe outer end carries out more uniform mixing, and air is made to be mixed with the preferable of combustion gas, improves efficiency of combustion, is subtracted
The low discharge of nitrogen oxides.
In above-mentioned low NO, the lateral wall of the Gas Pipe is connected there are two pressing plate, two pressing plates it is outer
End is equipped with the corresponding arc groove of notch, and two pressing plates are clamped with fire rod, and the fire rod is embedded in arc groove.Pass through two
The arc groove clamping fire rod of a pressing plate, has the advantages that simple in structure and locating effect is preferable, while convenient for fire rod
Dismounting.
In above-mentioned low NO, the lateral wall of the Gas Pipe is connected there are two pressing plate, two pressing plates it is outer
End is equipped with the corresponding arc groove of notch, and two pressing plates are clamped with ionization bar, and the ionization bar is embedded in arc groove.Pass through two
The arc groove clamping ionization bar of a pressing plate, has the advantages that simple in structure and locating effect is preferable, while convenient for ionization bar
Dismounting.
In above-mentioned low NO, the lower end of the Gas Pipe is fixed with tracheae seat, under the tracheae seat
End is equipped with the location hole to match with air hose and the lower end of the air hose is embedded in the location hole, the body
Lateral wall be equipped with inlet end, the inlet end is connected with the tracheae seat.The lower end of air hose is embedded in tracheae seat
In location hole, have the advantages that locating effect is preferable, by inlet end in Gas Pipe delivery of fuel gas, have it is simple in structure and defeated
Send the advantages of more convenient.
Compared with prior art, this low NO has the following advantages：
1st, burning is sufficiently mixed by the air spiral in combustion barrel and with the combustion gas of the outer end of Gas Pipe, there is combustion
Efficient, the advantages of making the discharge capacity of nitrogen oxides low is burnt, while this low NO has the advantages that structure is relatively simple；
2nd, the upper end of diffusion barrel has the inclined guide face in side inside, and combustion gas and air are carried out to guide toward inside, real
Existing second-time burning, improves efficiency of combustion；
3rd, the diameter of the recirculation hole of the axis of the rounded and close burner plate of recirculation hole is less than the axis away from burner plate
Recirculation hole diameter, combustion gas can be made more sufficiently to burn, improve efficiency of combustion；
4th, adjust diffusion barrel and body to axial apart from when, by unclamping screw, adjustment diffusion barrel to suitable position
It puts, then by screw lock, has the advantages that simple in structure and adjust more convenient.
Description of the drawings
Fig. 1 is the stereoscopic schematic diagram of this low NO.
Fig. 2 is the schematic top plan view of this low NO.
Fig. 3 is the A-A schematic cross-sectional views of Fig. 2.
Fig. 4 is the stereoscopic schematic diagram of the burner plate of this low NO.
In figure, 1, combustion barrel；1a, body；1a1, bar hole；1a2, inlet end；1b, diffusion barrel；1b1, guide face；2nd, fire
Tracheae；2a, circulation aperture；3rd, air hose；4th, burner plate；4a, recirculation hole；4b, diversion trench；5th, air jet pipe；6th, impeller；6a, leaf
Piece；7th, screw；8th, pressing plate；9th, fire rod；10th, ionization bar；11st, tracheae seat；11a, location hole.
Specific embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figures 1 to 4, low NO, including axially through combustion barrel 1, be fixed with Gas Pipe 2 in combustion barrel 1,
Air hose 3 is fixed in Gas Pipe 2, the cavity and the cavity of Gas Pipe 2 of air hose 3 are isolated, the lower end of air hose 3 and burning
The lower end of cylinder 1 is connected, and the upper end of Gas Pipe 2 is fixed with burner plate 4 in the form of annular discs, is laid on burner plate 4 perforative
The diameter of the recirculation hole 4a of the axis of the rounded and close burner plate 4 of recirculation hole 4a, recirculation hole 4a is less than away from burner plate 4
The diameter of the recirculation hole 4a of axis, can make combustion gas more sufficiently burn, improve efficiency of combustion.
Several horizontally disposed air jet pipes 5 are fixed on burner plate 4, air jet pipe 5 is uniform centered on the axis of burner plate 4
It sets, the outer end of air jet pipe 5 is connected close to the edge of burner plate 4 and with combustion barrel 1, inner end and 2 phase of Gas Pipe of air jet pipe 5
Connection.The upper end of Gas Pipe 2 is equipped with several circulation aperture 2a, and circulation aperture 2a is located at the upside of air jet pipe 5.Under Gas Pipe 2
End inside is equipped with impeller 6, and impeller 6 includes several blade 6a being obliquely installed, and blade 6a is uniform centered on the axis of combustion barrel 1
It sets.
Combustion barrel 1 includes the body 1a and the coaxial diffusion barrel 1b for being connected in body 1a upper ends of tubular, burner plate 4 and spray
Tracheae 5 is located in the diffusion barrel 1b, and the upper end of diffusion barrel 1b is with the inclined guide face 1b1 in side, burner plate 4 are located inside
The downside of guide face 1b1.The axial distance of diffusion barrel 1b opposing bodies 1a can be adjusted by being equipped between diffusion barrel 1b and body 1a
Adjusting mechanism, adjusting mechanism includes being arranged on bar hole 1a1 on body 1a lateral walls, and bar hole 1a1 is parallel to body 1a
Axis set, bar hole 1a1 is equipped with screw 7, and inner end and the body 1a screw threads of screw 7 are fixedly connected with.By unclamping screw 7,
Adjustment diffusion barrel 1b is locked to suitable position, then by screw 7, is had the advantages that simple in structure and is adjusted more convenient.
Burner plate 4 is in the form of annular discs, is additionally provided with perforative and in strip diversion trench 4b on burner plate 4, and diversion trench 4b is in inclining
It tiltedly sets, and diversion trench 4b is uniformly arranged centered on the axis of burner plate 4, and partial air is made to flow through on 4 rear screw of burner plate
It rises, improves the mixing of air and combustion gas, and improve the efficiency of combustion of combustion gas, reduce the discharge of nitrogen oxides.
The lateral wall of Gas Pipe 2 is connected there are two pressing plate 8, and the outer end of two pressing plates 8 is equipped with the corresponding arc groove of notch,
Two pressing plates 8 are clamped with fire rod 9, and fire rod 9 is embedded in arc groove.The lateral wall of Gas Pipe 2 is also connected there are two pressing plate 8,
The outer end of two pressing plates 8 is equipped with the corresponding arc groove of notch, and two pressing plates 8 are clamped with ionization bar 10, and ionization bar 10 is embedded with
In arc groove.Ionization bar 10 can eliminate the electrostatic in combustion gas, the advantages of making burning safer reliable.
The lower end of Gas Pipe 2 is fixed with tracheae seat 11, and the lower end of tracheae seat 11 is equipped with the location hole to match with air hose 3
In location hole 11a, the lateral wall of body 1a is equipped with inlet end 1a2, inlet end 1a2 and tracheae for the lower end of 11a and air hose 3
Seat 11 is connected.The lower end of air hose 3 has the advantages that locating effect is preferable, passes through in the location hole 11a of tracheae seat 11
Inlet end 1a2 delivery of fuel gas in Gas Pipe 2 has the advantages that simple in structure and conveying is more convenient.
The lower end of low NO is connected with wind turbine.At work, air, air warp are blown into combustion barrel by wind turbine
Risen in the shape of a spiral by air during the guiding of impeller 6 when crossing impeller 6, partial air enters air hose 3 to the chamber of combustion barrel
The upper end of body.Burning is sufficiently mixed by the air spiral in combustion barrel and with the combustion gas of the outer end of Gas Pipe 2, there is combustion
Burn it is efficient, while air hose come out air cool down to combustion barrel 1, avoid 1 upper end of combustion barrel generate high temperature dot, improve
Efficiency of combustion, the advantages of making the discharge capacity of nitrogen oxides low, so that the advantages of discharge capacity of nitrogen oxides is low, while this is low
Nitrogen burner has the advantages that structure is relatively simple.The upper end of diffusion barrel 1b has the inclined guide face 1b1 in side inside, to combustion gas
And air guided toward inside, realizes second-time burning, improves efficiency of combustion.By setting above-mentioned circulation aperture 2a,
It lights a fire convenient for this low NO, and can realize the middle part burning of combustion barrel 1, there is high combustion efficiency and burning is more uniform
The advantages of.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although combustion barrel 1, body 1a, bar hole 1a1, inlet end 1a2, diffusion barrel 1b, water conservancy diversion is used more herein
Face 1b1, Gas Pipe 2, circulation aperture 2a, air hose 3, burner plate 4, recirculation hole 4a, diversion trench 4b, air jet pipe 5, impeller 6, blade
The terms such as 6a, screw 7, pressing plate 8, fire rod 9, ionization bar 10, tracheae seat 11, location hole 11a, but be not precluded from using other arts
The possibility of language.The use of these terms is merely for the convenience of describing and explaining the nature of the invention；They are solved
It is all contrary to the spirit of the present invention to be interpreted into any one of the additional limitations.
Claims (10)
1. low NO, including axially through combustion barrel (1), is fixed with Gas Pipe (2), institute in the combustion barrel (1)
Air hose (3), the lower end of the air hose (3) and the lower end phase of the combustion barrel (1) are fixed in the Gas Pipe (2) stated
Connection, which is characterized in that the upper end of the Gas Pipe (2) is fixed with burner plate (4), and the burner plate is laid on (4)
There is perforative recirculation hole (4a), several horizontally disposed air jet pipes (5), the jet are fixed on the burner plate (4)
The inner end of pipe (5) is connected with the Gas Pipe (2), and the outer end of the Gas Pipe (2) is connected with the combustion barrel (1)
Logical, the lower end inside of the Gas Pipe (2) is equipped with impeller (6), and the impeller (6) includes several blades being obliquely installed
(6a)。
2. low NO according to claim 1, which is characterized in that the combustion barrel (1) includes the body of tubular
(1a) and the diffusion barrel (1b) for being coaxially connected in body (1a) upper end, the burner plate (4) and described air jet pipe (5) position
In the diffusion barrel (1b), the upper end of the diffusion barrel (1b) has the inclined guide face in side (1b1) inside, described
Burner plate (4) is located at the downside of the guide face (1b1).
3. low NO according to claim 2, which is characterized in that the diffusion barrel (1b) and the body
The adjusting mechanism of the axial distance of diffusion barrel (1b) opposing body (1a), the adjusting mechanism can be adjusted by being equipped between (1a)
Including the bar hole (1a1) being arranged on described body (1a) lateral wall, the bar hole (1a1) is parallel to the sheet
The axis of body (1a) is set, and the bar hole (1a1) is equipped with screw (7), the inner end of the screw (7) and the sheet
Body (1a) screw thread is fixedly connected with.
4. according to the low NO described in claim 1 or 2 or 3, which is characterized in that the upper end of the Gas Pipe (2) is set
There are several circulation apertures (2a), the circulation aperture (2a) is located at the upside of the air jet pipe (5).
5. according to the low NO described in claim 1 or 2 or 3, which is characterized in that the burner plate (4) is in the form of annular discs,
The air jet pipe (5) is uniformly arranged centered on the axis of the burner plate (4), and the outer end of the air jet pipe (5) is leaned on
The edge of the nearly burner plate (4).
6. according to the low NO described in claim 1 or 2 or 3, which is characterized in that be additionally provided on the burner plate (4)
Perforative and in strip diversion trench (4b), the diversion trench (4b) is inclined to set, and the diversion trench (4b) is with institute
It is uniformly arranged centered on the axis for the burner plate (4) stated.
7. according to the low NO described in claim 1 or 2 or 3, which is characterized in that the recirculation hole (4a) is rounded
And the diameter of the recirculation hole (4a) close to the axis of the burner plate (4) is less than the axis away from the burner plate (4)
The diameter of recirculation hole (4a).
8. according to the low NO described in claim 1 or 2 or 3, which is characterized in that the blade (6a) is with the combustion
It is uniformly arranged centered on the axis of burning cylinder (1).
9. according to the low NO described in claim 1 or 2 or 3, which is characterized in that the lateral wall of the Gas Pipe (2)
It is connected there are two pressing plate (8), the outer end of two pressing plates (8) is equipped with the corresponding arc groove of notch, and two pressing plate (8) clampings are a little
Lighted torch (9), the fire rod (9) is embedded in arc groove.
10. the low NO according to Claims 2 or 3, which is characterized in that the lower end of the Gas Pipe (2) is connected
There is a tracheae seat (11), the lower end of the tracheae seat (11) is equipped with the location hole (11a) that matches with air hose (3) and described
In the location hole (11a), the lateral wall of the body (1a) is equipped with inlet end (1a2) for the lower end of air hose (3),
The inlet end (1a2) is connected with the tracheae seat (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721144551.0U CN207407340U (en) | 2017-09-07 | 2017-09-07 | Low NO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721144551.0U CN207407340U (en) | 2017-09-07 | 2017-09-07 | Low NO |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207407340U true CN207407340U (en) | 2018-05-25 |
Family
ID=62405754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721144551.0U Expired - Fee Related CN207407340U (en) | 2017-09-07 | 2017-09-07 | Low NO |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207407340U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477580A (en) * | 2017-09-07 | 2017-12-15 | 温岭威索燃烧器有限公司 | Low NO |
| CN109681908A (en) * | 2019-01-21 | 2019-04-26 | 襄阳市胜合燃力设备有限公司 | Low nitrogen high thrust burner |
| CN110260318A (en) * | 2019-06-28 | 2019-09-20 | 江苏卡瓦诺热能科技有限公司 | Ultralow nitrogen discharged burner |
-
2017
- 2017-09-07 CN CN201721144551.0U patent/CN207407340U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477580A (en) * | 2017-09-07 | 2017-12-15 | 温岭威索燃烧器有限公司 | Low NO |
| CN109681908A (en) * | 2019-01-21 | 2019-04-26 | 襄阳市胜合燃力设备有限公司 | Low nitrogen high thrust burner |
| CN110260318A (en) * | 2019-06-28 | 2019-09-20 | 江苏卡瓦诺热能科技有限公司 | Ultralow nitrogen discharged burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180525 Termination date: 20190907 |
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| CF01 | Termination of patent right due to non-payment of annual fee |