CN205939146U - Novel low NOx gas combustion ware - Google Patents
Novel low NOx gas combustion ware Download PDFInfo
- Publication number
- CN205939146U CN205939146U CN201620971329.7U CN201620971329U CN205939146U CN 205939146 U CN205939146 U CN 205939146U CN 201620971329 U CN201620971329 U CN 201620971329U CN 205939146 U CN205939146 U CN 205939146U
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- air
- natural gas
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- intermediate layer
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- 238000002485 combustion reaction Methods 0.000 title abstract description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 90
- 239000003345 natural gas Substances 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 239000000446 fuel Substances 0.000 abstract description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 206010020843 Hyperthermia Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000036031 hyperthermia Effects 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Abstract
The utility model discloses a novel low NOx gas combustion ware, including central gas channel, air duct, natural gas restricted aperture, front end natural gas cavity, radial jet orifice, radial distributing pipe, intermediate level air duct, inlayer air duct, outer air duct, inlayer air restrictor plate, intermediate level air restrictor plate, inlayer whirl device and intermediate level whirl device. The beneficial effects of the utility model are that: through central gas channel and air duct, fall into the two -stage with the natural gas, the air falls into tertiaryly, and inlayer fuel mixes with inlayer swirlling air through the blowout of radial jet orifice, among the swirlling air of intermediate level fuel direct injection intermediate level, form and to mix gas in advance, the shape and the scope of outer air control combustor low reaches flame, through the combined action of radial distributing pipe and three -layer air classification, guarantee burner outlet department velocity distribution rationally, the natural gas and air mixing be even, rationally controls the combustion zone.
Description
Technical field
The utility model is related to a kind of burner, specially a kind of new low NOx gas burner, belongs to natural gas clean
Combustion Technology field.
Background technology
NOx is a kind of important atmosphere pollution, is to cause acid rain, the key factor of haze.Day with environmental requirement
Benefit improves, and the restriction for NOx discharge is also increasingly strict.In recent years, fired using gases such as natural gases as the clean type of fuel
Air burner is greatly developed.Gas burner has the advantages that safe and efficient, easy and simple to handle.But gas burner
NOx pollutant emission still has greatly improved space, and people are still striving to find the various technology hands reducing pollutant emission
Section.Therefore, a kind of design of new low NOx gas burner is particularly important for tissue burning, reduction pollutant emission.
Gas burner is by being mixed natural gas and air and being organized burning to reach the purpose of release heat.Logical
Cross rational designed combustion device structure, on the basis of ensureing that burning is reliable, efficient, reduce the product in area of localized hyperthermia as far as possible
Raw, so that natural gas and air is mixed, thus suppressing the generation of NOx in combustion process, the discharge capacity of minimizing NOx.
Contrast patent：Chinese patent, patent CN103842724B, using the version of inside and outside two-layer fuel gun, adjust
Combustion zone fuel and the distribution of air, reduce the formation of high-temperature area, reduce the discharge capacity of NOx.But, due to fuel gun
, before entering combustion zone, the distance mixing with air is short, the time is few, leads to this region natural gas and air for the natural gas spraying
Mixing effect be deteriorated, cause concentration in combustion zone, temperature distributing disproportionation even, increase NOx growing amount.Therefore, still need
Will more rationally effectively a kind of new low NOx gas burner form come to organize burning and control pollutant emission.
Utility model content
The purpose of this utility model is that provides a kind of new low NOx gas burner to solve the above problems.
The utility model is achieved through the following technical solutions above-mentioned purpose, a kind of new low NOx gas burner, including
Center natural gas passage and air duct, described center natural gas channel interior is provided with the natural air cavity of natural gas metering hole and front end
Room, and the top of the natural gas chamber in front end is provided with equally distributed radial injection hole；The outer wall of described center natural gas passage sets
There are multiple radial distribution pipes, and radial distribution pipe connection center natural gas passage and center air passage；Described air duct
It is divided into inner air passage, center air passage and outer air passage, and inner air passage comprises inner air current limliting
Plate and internal layer swirl-flow devices；Described center air passage comprises center air current limiting plate and intermediate layer swirl-flow devices, and in
Between layer of air current limiting plate be vertically arranged with intermediate layer swirl-flow devices；Outside the swirl-flow devices of described intermediate layer, described outer air is set
Passage, and described outer air passage is ring shaped axial passage；Inside described center air passage, inner air passage is set,
And outer air passage is set outside center air passage.
Preferably, described intermediate layer swirl-flow devices and internal layer swirl-flow devices eddy flow are in opposite direction.
Preferably, the distance between described radial distribution pipe and intermediate layer swirl-flow devices are the 3 of the diameter of radial distribution pipe
～5 times.
Preferably, the swirl vane number of described intermediate layer swirl-flow devices and internal layer swirl-flow devices is 6～12.
Preferably, the eddy flow angle of described intermediate layer swirl-flow devices and internal layer swirl-flow devices is 25 °～60 °.
Preferably, the number of described radial injection hole and radial distribution pipe is 6～12.
Preferably, a diameter of 2～4mm of described radial injection hole.
Preferably, the opening diameter on described inner air current limiting plate and center air current limiting plate is 6～20mm, and
It is uniformly distributed.
The beneficial effects of the utility model are：This kind of new low NOx gas burner pass through center natural gas passage and
Air duct, natural gas is divided into two-stage, and air is divided into three-level, and internal layer fuel is sprayed by radial injection hole, with internal layer eddy flow
Air mixes；Intermediate layer fuel is emitted directly toward in the rotational flow air of intermediate layer, forms premix gas, and outer air controls burner downstream
The shape of flame and scope, by the collective effect of radial distribution pipe and the classification of three layer of air it is ensured that speed at burner outlet
It is reasonably distributed, natural gas and air blend uniformly, rationally control combustion zone, thus ensureing the stability burnt and good
NOx abatement effect.
Brief description
Fig. 1 is the new low NOx gas burner internal structure schematic diagram of one kind of the present utility model；
Fig. 2 is the new low NOx gas burner overall structure diagram of one kind of the present utility model；
Fig. 3 is structure sectional view at the new low NOx gas burner A of one kind of the present utility model.
In figure：1st, center natural gas passage；2nd, air duct；3rd, natural gas metering hole；4th, the natural gas chamber in front end；5th, footpath
To spray-hole；6th, radial distribution pipe；7th, center air passage；8th, inner air passage；9th, outer air passage；10th, internal layer
Air current limiting plate；11st, center air current limiting plate；12nd, internal layer swirl-flow devices；13rd, intermediate layer swirl-flow devices.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely description is it is clear that described embodiment is only a part of embodiment of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of making creative work
The every other embodiment being obtained, broadly falls into the scope of the utility model protection.
Refer to shown in Fig. 1-3, a kind of new low NOx gas burner, leads to including center natural gas passage 1 and air
Road 2, natural gas is entered by center natural gas passage 1, is divided into two parts by natural gas metering hole 3, a part of natural gas passes through
Natural gas metering hole 3 enters the natural gas chamber in front end 4, and the top of the natural gas chamber in front end 4 is provided with equally distributed multiple radial direction
Spray-hole 5, this portion of natural gas eventually passes through radial injection hole 5 and sprays to nozzle downstream；Another part natural gas passes through to be located at
Multiple radial distribution pipes 6 of center natural gas passage 1 outer wall, enter in center air passage 7, pre- with intermediate layer rotational flow air
After mixing, enter nozzle downstream.Through the gas of premixing, stability is strong in combustion, combustion zone mean temperature is low,
The generation of NOx can effectively be suppressed.It is divided into three parts after combustion air air inlet passage 2, respectively enter inner air and lead to
Road 8, center air passage 7, outer air passage 9.Wherein, inner air current limiting plate 10 and center air current limiting plate 11 are determined
The allocation proportion of fixed each layer of air.Enter the air of inner air passage 8, form eddy flow, same footpath through internal layer swirl-flow devices 12
The natural gas ejecting to spray-hole 5 uniformly mixes, and in burner fired downstream, forms stable internal layer combustion zone；Enter
The air of center air passage 7, first passes through intermediate layer swirl-flow devices 13 and forms eddy flow, then with the sky from radial distribution pipe 6
So gas is pre-mixed, and in burner fired downstream, forms the larger intermediate layer combustion zone of area；Enter outer air passage
9 air, forms high velocity axial air ring, wraps interior, middle two-layer combustion zone, controls the shape of burner downstream flame
Shape and scope.Two combustion zones cooperatively form efficient, reliable combustion field, and effectively reduce the model in area of localized hyperthermia
Enclose, the generation of suppression NOx.
As a kind of optimisation technique scheme of the present utility model, intermediate layer swirl-flow devices 13 and internal layer swirl-flow devices 12 eddy flow
In opposite direction, and internal layer swirl strength is weaker than intermediate layer swirl strength, by the shear action of two-layer rotational flow gas, is formed steady
Fixed combustion zone.
As a kind of optimisation technique scheme of the present utility model, between radial distribution pipe 6 and intermediate layer swirl-flow devices 13
Distance is 3～5 times of the diameter of radial distribution pipe 6.Thus, ensureing the enough swirl strengths of center air acquisition, reaching
Optimum mixed effect.
As a kind of optimisation technique scheme of the present utility model, the rotation of intermediate layer swirl-flow devices 13 and internal layer swirl-flow devices 12
Stream blade number is 6～12.
As a kind of optimisation technique scheme of the present utility model, the rotation of intermediate layer swirl-flow devices 13 and internal layer swirl-flow devices 12
Flow angle is 25 °～60 °.
As a kind of optimisation technique scheme of the present utility model, the number of radial injection hole 5 and radial distribution pipe 6 is 6～
12.
As a kind of optimisation technique scheme of the present utility model, a diameter of 2～4mm of radial injection hole 5, cooperation internal layer rotation
The eddy flow angle of stream device 12 is chosen, and reaches optimal mixed effect.
As a kind of optimisation technique scheme of the present utility model, inner air current limiting plate 10 and center air current limiting plate 11
On opening diameter be 6～20mm, and be uniformly distributed, while reaching control air mass flow distribution, adjust air flow side
To for axially it is ensured that subsequently uniform mixed effect.
Operation principle of the present utility model is as follows：Natural gas is entered by center natural gas passage 1, and a part of natural gas enters
Enter the natural gas chamber in front end 4, radially eject from radial injection hole 5, pass through eddy flow with the air from inner air passage 8
Effect is mutually mixed the combustion zone uniformly entering downstream, forms the internal layer combustion zone of burner.Another part natural gas passes through
Radial distribution pipe 6, enters in center air passage 7, carries out with the rotational flow air producing through intermediate layer swirl-flow devices 13 pre-
Mixing, enters combustion zone, forms the intermediate layer combustion zone of burner.Enter the air of outer air passage 9, by being formed axially
The mode of air ring, controls shape and the scope of burner downstream flame.By intermediate layer swirl-flow devices 13 and internal layer swirl-flow devices
The shear action of 11 eddy flows generation in opposite direction, two combustion zones carry out violent material and heat transfer, be collectively forming stable,
Efficient combustion zone.
Wherein, internal layer combustion zone is fuel-rich regions, suppresses the generation of NOx by the fuel-rich of local；Burn in intermediate layer
Area is poor fuel pre-mixed gas, and ignition temperature is low, equally plays the effect reducing NOx emission.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, this practicality can be realized in other specific forms new
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, this practicality is new
The scope of type is limited by claims rather than described above, it is intended that the containing of equivalency that will fall in claim
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limiting
Involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment only wraps
Containing an independent technical scheme, only for clarity, those skilled in the art should for this narrating mode of specification
Using specification as an entirety, the technical scheme in each embodiment can also form those skilled in the art through appropriately combined
Understandable other embodiment.
Claims (8)
1. a kind of new low NOx gas burner, including center natural gas passage (1) and air duct (2) it is characterised in that：
It is provided with natural gas metering hole (3) and front end natural gas chamber (4) inside described center natural gas passage (1), and front end natural gas
The top of chamber (4) is provided with equally distributed radial injection hole (5)；The outer wall of described center natural gas passage (1) is provided with multiple
Radial distribution pipe (6), and radial distribution pipe (6) connection center natural gas passage (1) and center air passage (7)；Described sky
Gas passage (2) is divided into inner air passage (8), center air passage (7) and outer air passage (9), and inner air is led to
Road (8) comprises inner air current limiting plate (10) and internal layer swirl-flow devices (12)；Described center air passage (7) comprises intermediate layer
Air current limiting plate (11) and intermediate layer swirl-flow devices (13), and center air current limiting plate (11) and intermediate layer swirl-flow devices (13)
It is vertically arranged；Described outer air passage (9) is set outside described intermediate layer swirl-flow devices (13), and described outer air passage
(9) it is ring shaped axial passage；Setting inner air passage (8) inside described center air passage (7), and center air is logical
Setting outer air passage (9) outside road (7).
2. the new low NOx gas burner of one kind according to claim 1 it is characterised in that：Described intermediate layer eddy flow dress
Put (13) and internal layer swirl-flow devices (12) eddy flow is in opposite direction.
3. the new low NOx gas burner of one kind according to claim 1 it is characterised in that：Described radial distribution pipe (6)
It is 3～5 times of the diameter of radial distribution pipe (6) with the distance between intermediate layer swirl-flow devices (13).
4. the new low NOx gas burner of one kind according to claim 1 it is characterised in that：Described intermediate layer eddy flow dress
Put (13) and the swirl vane number of internal layer swirl-flow devices (12) is 6～12.
5. the new low NOx gas burner of one kind according to claim 1 it is characterised in that：Described intermediate layer eddy flow dress
Put (13) and the eddy flow angle of internal layer swirl-flow devices (12) is 25 °～60 °.
6. the new low NOx gas burner of one kind according to claim 1 it is characterised in that：Described radial injection hole (5)
It is 6～12 with the number of radial distribution pipe (6).
7. the new low NOx gas burner of one kind according to claim 1 it is characterised in that：Described radial injection hole (5)
A diameter of 2～4mm.
8. the new low NOx gas burner of one kind according to claim 1 it is characterised in that：Described inner air current limliting
Opening diameter on plate (10) and center air current limiting plate (11) is 6～20mm, and is uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620971329.7U CN205939146U (en) | 2016-08-26 | 2016-08-26 | Novel low NOx gas combustion ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620971329.7U CN205939146U (en) | 2016-08-26 | 2016-08-26 | Novel low NOx gas combustion ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205939146U true CN205939146U (en) | 2017-02-08 |
Family
ID=57954678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620971329.7U Expired - Fee Related CN205939146U (en) | 2016-08-26 | 2016-08-26 | Novel low NOx gas combustion ware |
Country Status (1)
| Country | Link |
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| CN (1) | CN205939146U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297018A (en) * | 2017-07-24 | 2019-02-01 | 福州华夏蓝天信息科技有限公司 | A kind of low nitrogen burner |
| CN110332534A (en) * | 2019-07-26 | 2019-10-15 | 山东中科天健环保科技有限公司 | A kind of novel low emission natural gas high combustion rate burner structure |
| CN110397920A (en) * | 2019-07-11 | 2019-11-01 | 山东中科天健环保科技有限公司 | A kind of novel low nitrogen oxide burner structure |
-
2016
- 2016-08-26 CN CN201620971329.7U patent/CN205939146U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297018A (en) * | 2017-07-24 | 2019-02-01 | 福州华夏蓝天信息科技有限公司 | A kind of low nitrogen burner |
| CN109297018B (en) * | 2017-07-24 | 2024-03-26 | 福州华夏蓝天信息科技有限公司 | Low nitrogen gas combustor |
| CN110397920A (en) * | 2019-07-11 | 2019-11-01 | 山东中科天健环保科技有限公司 | A kind of novel low nitrogen oxide burner structure |
| CN110332534A (en) * | 2019-07-26 | 2019-10-15 | 山东中科天健环保科技有限公司 | A kind of novel low emission natural gas high combustion rate burner structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Shiwu Inventor after: Zhang Long Inventor before: Zhou Shiwu |
|
| CB03 | Change of inventor or designer information | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 |