CN108397772A - A kind of combustion head - Google Patents
A kind of combustion head Download PDFInfo
- Publication number
- CN108397772A CN108397772A CN201810425196.7A CN201810425196A CN108397772A CN 108397772 A CN108397772 A CN 108397772A CN 201810425196 A CN201810425196 A CN 201810425196A CN 108397772 A CN108397772 A CN 108397772A
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- CN
- China
- Prior art keywords
- combustion
- gas
- air
- annular housing
- flame
- Prior art date
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- Granted
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 102
- 239000007789 gas Substances 0.000 claims abstract description 80
- 239000000567 combustion gas Substances 0.000 claims abstract description 73
- 238000009826 distribution Methods 0.000 claims description 32
- 238000009434 installation Methods 0.000 claims description 8
- 210000000867 larynx Anatomy 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 23
- 239000000446 fuel Substances 0.000 description 20
- 239000002737 fuel gas Substances 0.000 description 10
- 239000003546 flue gas Substances 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
-
- 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
- F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
The invention discloses a kind of combustion heads, it includes the annular housing that outer wall cylinder, the inner edge of inner wall cylinder and face closed at both ends and outer rim are formed, the outer wall cylinder and inner wall cylinder and burner flame cylinder are coaxial, combustion gas injects annular housing by least one second gas burning connecting tube, combustion gas dispensing orifice is distributed on the outer wall cylinder and inner wall cylinder, combustion gas flows out annular housing by the combustion gas dispensing orifice, and gas nozzle is equipped on the combustion gas dispensing orifice.The annular housing combustion head of the present invention can separate combustion air, form two different mixing ratio air-flows, and an air-flow at center can ensure to generate a stable flame（Flame of centre）, the Secondary Air air-flow of layering can also ensure the fractional combustion of secondary flame well, to reach the generation for substantially reducing NOx.
Description
Technical field
The invention belongs to burner and its relevant air-gas mixing arrangement technical field, more particularly to a kind of burnings
Head and burner.The present invention relates to associated industrial burner, type covers including the combustion head on combustion chamber, fuel
For natural gas, it can be used for the system with or without external flue gas recirculation.
Background technology
For the burner of combusts fossil class A fuel A, tail gas will produce environmentally harmful pollutant, especially nitrogen and
The generation of the compound of oxygen（Such as NO, NO2）, normally referred to as nitrogen oxide NOx.It can be taken in designed combustion device a variety of
Measure so that the generation of pollutant can be affected/or reduce, the burner especially used in this.
For the burner of heat energy system, the nitrogen oxides for generation of burning reaches a certain critical-temperature in ignition temperature
When, production quantity directly increases with flame temperature exponentially grade.For above type of known burner, the solution of recommendation
All it is to make an issue of how reducing in flame temperature.
In general, the generation for reducing or reducing NOx is always the target ideal of industrial burner.It uses in the past
Some effective drop nitrogen methods, it is Lean burn combustion mainly to utilize fuel/air mixture composition main burning（Or thin combustion
It burns, is primarily referred to as the content of fuel gas in the mixture less than the air-fuel ratio gas quantity needed for normal completely burned, fuel phase
It is referred to as Lean burn combustion to poor）, then coordinate the secondary combustion of another part fuel gas classification.Main Lean burn combustion mode is one
Can achieve the effect that on a little devices it is satisfied because excessive air provides and reduces the negative of flame temperature in Lean burn combustion
It carries, then also just reduces nitrogen oxides.The combustion gas of classification is mixed into combustion zone later by burner edge gas nozzle or passes through
The center gas nozzle stretched out outside gas nozzle outlet enters combustion zone.The fuel of secondary combustion and the excess air of Lean burn combustion be
Have and burn in the environment of some flue gases, reaches the reaction effect that combustion mixture has been diluted.But these arrangements are simultaneously
Can not nitrogen oxides be successfully always reduced to ideal value.
For example, main lean combustion fuel mixing needs that a large amount of excess air is added in combustion zone, so air velocity is with respect to meeting
It is very fast.So high flow velocity is more than sometimes flame velocity, generates unstable combustion flame environment, and flame is unstable
Fixed, burning cannot even continue.
Described in patent document in 3811477 A1 of Patent No. DE, for gas burner, combustion gas is mixed with air
At entry of combustion chamber, combustion gas is entered by some mixing tubes.Wherein combustion gas is directly sent into combustion via mixture pipe and its nozzle
Chamber inlet is burnt, combustion chamber is mixed into combustion air.Gas Pipe outlet is in burner mixing chamber according to diverging directional spreding
In different sections.
The statement of DE 195 09 219 is the combustion head of a kind of mode and its burner, while burning about fuel gas
Combustion air is supplied, nitrogen oxides, wherein fuel qi leel two-stage are reduced using band non-active gas, after level-one is superimposed upon another grade
Face is blown on the flow direction of combustion air by the root of flame, and first order metachemistry reacts the combustion air and fuel of ratio
The mixed gas of gas flows to flame, and the fuel gas of supplement is added in second level section, and the flue gas where looped back is as non-
Active gases is added to the second level, and a part of burning gases inject the second level and formed less than chemical reaction ratio with circulating flue gas
Mixed gas is mixed before reaching flame.
The record of EP 0 347 834 is a kind of combustion head of forced-air blast gas burner, and there are one burner tubes for band
Include the distributor and relevant fuel gas jets and air duct, burner tube and flame of fuel gas and combustion air
Pipe is connected, and has the circulating flue gas mouth of radial aperture, circulating flue gas to be radiated by these in the position that burner tube is connect with flame tube
Formula opening is reverse to flow into flame root, while fuel gas and air flow into flame by nozzle and air duct forward direction, and combustion gas exists
Longitudinal axis directional divergence formula stretches into flame region inside combustion head.
The record of EP 0 635 676 be a kind of method liquid fuel within or gaseous fuel low NOx combustion dress
It sets, burner used is extend into the combustion chamber of boiler, at least one fuel nozzle is for supplying in its burner flame cylinder
Fuel and neighbouring stable flame pan are answered, a large amount of combustion gas is sent to the inner wall area of burner inner liner by this method outward by stable flame pan, in fire
The quick flow that flame cylinder and stable flame pan gap are flowed through can generate negative pressure in the edge of burner inner liner, the flue gas of generation in combustion chamber and
It is recycled by inside, has been sent to the negative pressuren zone, has there is multiple water conservancy diversion wedge angles for being deep into negative pressuren zone on burner inner liner.
Chinese patent CN107120652 describes a kind of classification combustion gas low NO, is related to technical field of burner.Point
Grade combustion gas low NO includes distributor, flow guiding disc, ignitor, igniter fuel pipe and burning cylinder.Distributor is for giving
Combustion gas and air provide flow path, including ontology, multiple exhaust gas nozzles, combustion gas distribution ring and multiple air distributions.Ontology
For the cylinder with the first interlayer, combustion gas is entered by ontology after Gas Pipe to be sprayed by combustion gas distribution ring.Air flows through ontology
Inlet air flow path is formed on the outside of hollow portion, air distribution and distributor, and combustion-supporting gas is provided to combustion gas.CN107120652
Distribution ring thinner thickness, as shown in the figure 4 times of diameters for being not more than combustion gas dispensing orifice, only using combustion gas as Internal and external cycle distribution,
There is no the functions of separating air.The air that the flow guiding disc of CN107120652 imports multiple air distributions is led
Stream forms rotary air air-flow, and main body is air, and gas distribution device is not arranged.
Above-mentioned patent makes combustion gas be divided into two-stage ejection after combustion gas distribution ring, and enough skies are provided to flame of centre
Gas enhances air and combustion gas mixing, shortens flue gas in the residence time of high-temperature region, advantageously reduces flame temperature.It is above-mentioned special
Profit can control air and the flow and speed of combustion gas, control air-fuel ratio, and combustion gas is made to be sufficiently mixed burning with air, reduce nitrogen oxidation
The generation of object.
But these above-mentioned known patented methods and structure are increasingly increased dirty for combustion apparatus reduction to realize
The demand for contaminating object discharge is inadequate, especially when statutory requirements reach the discharge index of low NOx, these sides
Method and structure are limited, still there is a problem of that nitrogen oxides is excessively high.
The purpose of the present invention is overcoming the drawbacks described above of existing combustion head, combustion head of the invention is by using an annular
Cavity innovation the method for salary distribution, combustion gas is highly precisely distributed close to the position of flame region, while by combustion-supporting sky
Qi leel flows out combustion head after being divided into First air and Secondary Air.First air and Secondary Air can be separated completely, while accurately
Control an air-flow and the air of secondary gas flow and the mixing ratio of combustion gas.By means of this accurate control for air fuel gas mixing
System, it is possible to produce air capacity is more than the secondary gas flow of chemical reaction ratio（Poor fuel area）With air capacity less than chemical reaction ratio
Air-flow（Fuel-rich regions）.Nitrogen oxides can be brought up by increasing an air-flow gas concentration and reducing secondary gas flow gas concentration
Production quantity is reduced.
Invention content
The purpose of the present invention is to provide the air and combustion gas mixing that can accurately control an air-flow and secondary gas flow,
Reach the combustion head and burner for substantially reducing formation of nitrogen oxides.
The technical scheme is that a kind of combustion head comprising outer wall cylinder, inner wall cylinder and face closed at both ends inner edge and
The annular housing that outer rim is formed, the outer wall cylinder and inner wall cylinder and burner flame cylinder are coaxial, and combustion gas passes through at least one two
Grade gas connection pipe injects annular housing, and combustion gas dispensing orifice is distributed on the outer wall cylinder and inner wall cylinder, and combustion gas passes through described
Combustion gas dispensing orifice flows out the annular housing, and gas nozzle is equipped on the combustion gas dispensing orifice.
Preferably, the annular housing has certain length to generate the primary of separation on the axial direction of combustion head
Wind channel and secondary air channel form the swirling eddy of First air, in the Secondary Air in the First air channel air air-flow
Channel forms the straight air-flow of Secondary Air.
Preferably, the length of the annular housing is more than or equal to the 20% of burner flame cylinder diameter.
Preferably, air conducting component is integrated on the gas nozzle, the gas nozzle is according to required combustion gas point
Installation fixation is carried out with direction.
Preferably, combustion gas is assigned to flame zone by the exit region of annular housing.
Preferably, the gas nozzle is connect with the silk pitch thread of the combustion gas dispensing orifice, by adjusting the gas injection
The screw-in depth of mouth, adjustment of combustion gas flow, the gas nozzle can be closed by being screwed into bottom completely.
Preferably, it along the axis direction of the combustion head, the longitudinal length of extension, is arranged with rear side on front side of stable flame pan
There is gas nozzle.
Preferably, the input end of the second gas burning connecting tube connects with the outlet end of gas distribution pipe by the way that piston type is nested
It connects, elastic can adjust the axial position of combustion head, while the taper of the burner flame cylinder inner wall front end being coordinated to receive
Gap between mouthful adjusts the flow of Secondary Air.
Preferably, further include cylindrical chamber and stable flame pan, the tapered closing in shape in outlet of the burner flame cylinder, institute
The clearance space for stating annular housing and the taper mouth of the burner flame cylinder forms Secondary Air larynx neck, the cylinder chamber
Body provides the installation to the stable flame pan and supports, and the cylindrical chamber can be on a gas distribution pipe along the axis of combustion head
The elastic sliding in line direction, to adjust the relative position with annular housing.
In conclusion the beneficial effects of the present invention are：The annular housing combustion head of the present invention can separate combustion air
It opens, forms two different mixing ratio air-flows, an air-flow of rotation can ensure to generate a stable flame（Central flame
Flame）, the light breeze air-flow of layering can also ensure the fractional combustion of secondary flame well, to reach the life for substantially reducing NOx
At.
The present invention is described in more detail below by embodiment.
Description of the drawings
The combustion head that Fig. 1 show the present invention is used for the schematic diagram that burner is placed in combustion chamber.
Fig. 2 show the present invention combustion head transverse sectional view and along figure the directions A-A sectional view.
Fig. 3 is the sectional view of the transverse sectional view and the directions A-A in figure of the combustion head of the present invention.
The structural schematic diagram of Fig. 4 combustion heads of the present invention.
The structural schematic diagram of air conducting piece is installed on the outer tube wall of Fig. 5 combustion heads of the present invention.
The structural schematic diagram of Fig. 6 combustion heads of the present invention.
The structure sectional view of Fig. 7 combustion heads of the present invention.
The reference numeral of the present invention refers to as follows：1, combustion head, 2, main air inlet pipe, 3, gas distribution pipes, 4, secondary
Gas distribution pipe, 5, annular housing-combustion gas current collector, 6, gas nozzle, 7, stable flame pan, 8, burner inner liner, 9, inner wall cylinder, 10, outer
Wall cylinder, 11, inner edge, 12, outer rim, 13, combustion gas current collector-cylindrical chambers, 14, First air channel, 15, secondary air channel,
16, Secondary Air larynx neck, 17, flame generation areas（Small dotted line race way）, 18, secondary flame generation area（Big dotted line cycle
Area）, 19, main combustion gas stream, 20, combustion gas streams, 21, secondary combustion gas stream, 22, combustion head axis, 23, combustion gas dispensing orifice, 24, two
Grade gas connection pipe, 25, boiler, 26, combustion chamber, 27, air conducting piece, 28, burner inner liner conical outlet, 29 combustion head outlet areas
Domain（Long dotted line）.
Specific implementation mode
Invention is further explained in a manner of embodiment combination attached drawing below.
As shown in Figures 1 to 7, it illustrates the concrete structure of combustion head of the present invention, combustion head 1 of the invention devises ring
The combustion gas current collector 5 of shape cavity carrys out guiding gas and flows into combustion head to generate the region that catches fire, the combustion head include by outer wall cylinder 10,
The annular housing that the inner edge 11 and outer rim 12 in inner wall cylinder 9 and face closed at both ends are formed, outer wall cylinder 10, inner wall cylinder 9 and burner fire
Flame cylinder 8 is coaxial, and on the central axial extended line of combustion chamber 26, which has sufficient length to guarantee to arrange
Enough gas nozzles 6, the flame zone 17 and 18 for being assigned to burner that gas quantitative ladder is classified, while by combustion air
It is divided into First air and Secondary Air.
The combustion head of the annular housing of the present invention（That is combustion gas current collector 5）With dual function：First function is annular
Many gas nozzles 6 are integrated on combustion gas dispensing orifice 23 on the outer wall cylinder 10 and inner wall cylinder 9 of cavity 5, these nozzles 6 can be
The length direction and diametric(al) of annular housing 5 are distributed, and can also be distributed in the inner edge 11 of the annular housing 5 of air current flow direction
On the surface of outer rim 12.With the use of different latus rectums and the nozzle of quantity 6, may be implemented big by required flow for combustion gas
Combustion gas is accurately assigned in flame region 17 and 18 by small and injection direction.
Combustion-supporting air is divided into two parts by second function of the combustion head of the annular housing of the present invention, combustion air via
The First air channel 14 that the inner wall 9 of annular housing 5 is established, air-flow, which passes through, forms First air when First air channel 14 is flowed out, and two
Secondary wind is that combustion air forms Secondary Air when being flowed out with the secondary air channel 15 that burner inner liner 8 is formed via the outer wall 10 of annular housing 5.
Combustion gas is assigned to flame zone by its exit region 29 in combustion head 1, for being heated to boiler 25.
The ratio of First air and Secondary Air can be controlled by designing, by selecting the outer wall cylinder 10 of annular housing and interior
The seemly diameter size of wall cylinder 9 is realized.The ratio of First air and Secondary Air can also control by other means, relative to ring
The position of shape cavity 5 reduces the diameter of stable flame pan 7, can increase the flow of First air, the outer wall of burner inner liner 8 and annular housing 5
10 gap sizes determine be Secondary Air actual internal area, we are referred to as larynx neck 16, its size controls the wind of Secondary Air
Measure size.
Multiple gas nozzles 6 be mounted on annular housing 5 inside and outside wall 9 and 10 and outer rim 12 surface on, nozzle 6 can be with
Select different latus rectum sizes, number and shape, to obtain the ideal combustion gas distribution in flame area 17 and 18.
Multiple air conducting components 27 can be the fin of metal material, be mounted on the inner wall or outer wall of annular housing 5,
For guiding air draught, the intensity of enhancing air swirling eddy can contract short flamed length, can also be used to adjust primary
The proportioning of wind and Secondary Air.
Gas nozzle 6 and air conducting piece 27 are designed as being threadedly coupled with annular housing 5, can easily be screwed into.Pass through tune
The screw-in depth of whole nozzle 6, adjustment of combustion gas flow, the nozzle can be closed by being screwed into bottom completely.
Annular housing 5 can integrated installation a lot of other components meet additional function, can by the holder being designed correctly
To install ignitor and flame detecting electrode, realizes igniting and functions of flame detection, some external components can be installed and come school
It is accurate its in the center of burner inner liner 8, or installation Universal caster, easily sliding is dilatory when facilitating installation and maintaining.
Main combustion gas stream 19 and total fuel gas flow amount are flowed through in main air inlet pipe 2.Combustion gas current collector passes through secondary combustion gas point
Piping 4 and 24 is connected to receive combustion gas injection with main air inlet pipe 2, and the quantity of secondary gas distribution pipe 4 and 24 can be one more than,
It can be more.Extended outward by the radiation of main air inlet pipe 2 diverging, then secondary gas distribution pipe 4 is parallel with combustion head axial 22.
Main combustion gas 19 forms one via the secondary combustion gas stream 21 of formation in secondary gas distribution pipe 4, while via a gas distribution pipe 3 is interior
Secondary combustion gas stream 20.Secondary gas distribution pipe 4 is coaxially nested using piston type with secondary gas connection pipe 24, ensures combustion gas current collector
5 can be to front or rear sliding axial the 22 of combustion head, it is therefore an objective to which ensuring can be by adjusting toroidal cavity 5 relative to burner inner liner
The position of conical outlet 28 and stable flame pan 7 changes the distribution of air draught.The gas distribution pipe 3 of the present invention refers to center
Gas distribution pipe, secondary gas distribution pipe 4 and 24 refer to the gas distribution pipe for annular housing 5.
Because annular housing 5 only contains the combustion gas distribution of the outer collar region of combustion head, the present invention has also been used cooperatively once
Combustion gas distribution system guiding gas is reached the section that catches fire of a flame generation area 17 by the outlet of main air inlet pipe 2.In primary fire
Flame generation area 17,7 front side of stable flame pan establish the environment of a high swirling eddy of relatively low pressure, the shape on the axis of combustion head
At a flame（Flame of centre）.One time combustion gas distribution system can be made of multiple exhaust gas nozzles, and present invention uses primary combustions
Gas current collector-cylindrical chamber 13, it provides the support to stable flame pan 7 and installation site simultaneously, including a gas nozzle 6.
One time combustion gas current collector-cylindrical chamber 13 can be stretched on a gas distribution pipe 3 before and after 22 direction of axis of combustion head
Contracting sliding, to adjust and the relative position of annular housing-combustion head 5.
Burner 1 includes a burner inner liner 8, and the outer end opening of burner inner liner 8 is located at the interface of combustion chamber 26.Burner inner liner 8
Outlet can do tapered closing in shape, the clearance space shape of annular housing burner 5 and the taper mouth 28 of burner inner liner 8
At Secondary Air larynx neck 16, this is used for adjusting the flow of Secondary Air.On combustion head axis 22, adjusting annular housing is slid in and out
5 can reduce Secondary Air larynx neck ventilation-sectional area to reduce secondary air flow.
Because of the combustion head 1 of 5 structure of annular housing, First air and Secondary Air can be separated completely, while essence
Accurate air-flow of control and the air of secondary gas flow and the mixing ratio of combustion gas.By means of this essence for air fuel gas mixing
Quasi- control, it is possible to produce air capacity is more than the secondary gas flow of chemical reaction ratio（Poor fuel area）With air capacity less than chemical reaction
Air-flow of ratio（Fuel-rich regions）.Nitrogen oxygen can be brought up by increasing an air-flow gas concentration and reducing secondary gas flow gas concentration
The identical materialization mechanism that compound production quantity is reduced（Lean burn combustion and fuel-rich burning）.
The combustion head 5 of introducing and employment annular housing structure can separate combustion air, form two different mixing ratios
Air-flow, an air-flow of rotation can ensure to generate a stable flame generation area 17（Flame of centre）, the light breeze of layering
Air-flow can also ensure the fractional combustion of secondary flame generation area 18 well, to reach the generation for reducing NOx.
The structure that the combustion head of the present invention is not limited to the above embodiments, can carry out a variety of modifications.In short, not departing from this
All improvement within the scope of spirit are within the scope of the present invention.
Claims (9)
1. a kind of combustion head, which is characterized in that including outer wall cylinder（10）, inner wall cylinder（9）With the inner edge in face closed at both ends（11）With
Outer rim（12）The annular housing of formation, the outer wall cylinder（10）With inner wall cylinder（9）With burner flame cylinder（8）It is coaxial, combustion gas
Pass through at least one second gas burning connecting tube（24）Annular housing is injected, in the outer wall cylinder（10）With inner wall cylinder（9）Upper distribution
There is combustion gas dispensing orifice（23）, combustion gas passes through the combustion gas dispensing orifice（23）Flow out the annular housing, the combustion gas dispensing orifice
（23）On gas nozzle is installed（6）.
2. combustion head according to claim 1, which is characterized in that the annular housing has on the axial direction of combustion head
There is certain length to generate the First air channel of separation（14）And secondary air channel（15）, in the First air channel（14）It is empty
Gas air-flow forms First air air-flow, in the secondary air channel（15）Form Secondary Air air-flow.
3. combustion head according to claim 2, which is characterized in that the length of the annular housing is more than or equal to burning
Device burner inner liner（8）The 20% of diameter.
4. combustion head according to claim 1, which is characterized in that the gas nozzle（6）On be integrated with air conducting portion
Part（27）, the gas nozzle（6）Installation fixation is carried out according to required combustion gas distribution direction.
5. combustion head according to claim 1, which is characterized in that combustion gas is assigned to by the exit region of annular housing
Flame zone.
6. combustion head according to claim 4, which is characterized in that the gas nozzle（6）With the combustion gas dispensing orifice
（23）Silk pitch thread connection, by adjusting the gas nozzle（6）Screw-in depth, adjustment of combustion gas flow is screwed into bottom completely
The gas nozzle can be closed（6）.
7. combustion head according to claim 1, which is characterized in that along the axis of the combustion head（22）Direction, extension
On longitudinal length, on front side of stable flame pan and rear side is disposed with gas nozzle（6）.
8. combustion head according to claim 1, which is characterized in that the second gas burning connecting tube（24）Input end and combustion
Qi leel is piped（4）Outlet end by piston type nested encryptions, be capable of the elastic axial position for adjusting combustion head, match simultaneously
Close the burner flame cylinder（8）The taper of inner wall front end closes up（28）Between gap adjust the flow of Secondary Air.
9. combustion head according to claim 1, which is characterized in that further include cylindrical chamber（13）And stable flame pan（7）, described
Burner flame cylinder（8）The tapered closing in shape in outlet, the annular housing（5）With the burner flame cylinder（8）Cone
Shape mouth（28）Clearance space formed Secondary Air larynx neck（16）, the cylindrical chamber（13）It provides to the stable flame pan
（7）Installation support, the cylindrical chamber（13）It can be in a gas distribution pipe（3）On along combustion head axis（22）Side
Telescopic slide forwards, backwards, to adjust and annular housing（5）Relative position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810425196.7A CN108397772B (en) | 2018-05-07 | 2018-05-07 | Combustion head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810425196.7A CN108397772B (en) | 2018-05-07 | 2018-05-07 | Combustion head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108397772A true CN108397772A (en) | 2018-08-14 |
| CN108397772B CN108397772B (en) | 2024-05-14 |
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ID=63101578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810425196.7A Active CN108397772B (en) | 2018-05-07 | 2018-05-07 | Combustion head |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844067A (en) * | 2018-09-03 | 2018-11-20 | 哈尔滨电气股份有限公司 | A kind of full premix surface-type burner gas-air mixing machine |
| CN109058992A (en) * | 2018-08-29 | 2018-12-21 | 北京水木星源环保科技有限公司 | A kind of super low NO of microchannel distribution |
| CN109737401A (en) * | 2018-12-28 | 2019-05-10 | 西安交通大学 | A kind of low NO being mixed and burned using lean gas/flammable cyclonic current |
| 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 |
| CN110686241A (en) * | 2019-09-11 | 2020-01-14 | 合肥众建翔新能源有限公司 | Combustor based on new forms of energy are energy-conserving |
| CN111121022A (en) * | 2019-12-31 | 2020-05-08 | 西安交通大学 | Low-nitrogen gas burner based on heat pipe heat exchange |
| CN113996689A (en) * | 2021-10-13 | 2022-02-01 | 航天材料及工艺研究所 | Method for controlling spinning temperature field of phi 3350mm2195 aluminum lithium alloy integral box bottom |
| CN114992631A (en) * | 2022-05-25 | 2022-09-02 | 扬州市银焰机械有限公司 | Double-channel decomposing furnace burner |
| CN116293687A (en) * | 2023-04-11 | 2023-06-23 | 沧州市天龙燃烧设备有限公司 | Natural ventilation low-nitrogen burner |
| CN118111120A (en) * | 2024-04-29 | 2024-05-31 | 西安交通大学 | Gas generating device for combustion-heat exchange integrated helium heater of space engine |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109058992A (en) * | 2018-08-29 | 2018-12-21 | 北京水木星源环保科技有限公司 | A kind of super low NO of microchannel distribution |
| CN108844067A (en) * | 2018-09-03 | 2018-11-20 | 哈尔滨电气股份有限公司 | A kind of full premix surface-type burner gas-air mixing machine |
| CN109737401A (en) * | 2018-12-28 | 2019-05-10 | 西安交通大学 | A kind of low NO being mixed and burned using lean gas/flammable cyclonic current |
| 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 |
| CN110686241A (en) * | 2019-09-11 | 2020-01-14 | 合肥众建翔新能源有限公司 | Combustor based on new forms of energy are energy-conserving |
| CN111121022A (en) * | 2019-12-31 | 2020-05-08 | 西安交通大学 | Low-nitrogen gas burner based on heat pipe heat exchange |
| CN111121022B (en) * | 2019-12-31 | 2021-08-24 | 西安交通大学 | Low-nitrogen gas burner based on heat pipe heat exchange |
| CN113996689A (en) * | 2021-10-13 | 2022-02-01 | 航天材料及工艺研究所 | Method for controlling spinning temperature field of phi 3350mm2195 aluminum lithium alloy integral box bottom |
| CN114992631A (en) * | 2022-05-25 | 2022-09-02 | 扬州市银焰机械有限公司 | Double-channel decomposing furnace burner |
| CN116293687A (en) * | 2023-04-11 | 2023-06-23 | 沧州市天龙燃烧设备有限公司 | Natural ventilation low-nitrogen burner |
| CN116293687B (en) * | 2023-04-11 | 2023-08-29 | 沧州市天龙燃烧设备有限公司 | Natural ventilation low-nitrogen burner |
| CN118111120A (en) * | 2024-04-29 | 2024-05-31 | 西安交通大学 | Gas generating device for combustion-heat exchange integrated helium heater of space engine |
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