CN208606167U - A kind of low NO - Google Patents
A kind of low NO Download PDFInfo
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- CN208606167U CN208606167U CN201821152054.XU CN201821152054U CN208606167U CN 208606167 U CN208606167 U CN 208606167U CN 201821152054 U CN201821152054 U CN 201821152054U CN 208606167 U CN208606167 U CN 208606167U
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Abstract
The utility model provides a kind of low NO, conveniently adjusted combustion air volume, and fuel gas and combustion air can not only be uniformly mixed, and also solution flame the problems in excessively collects, to substantially reduce N0x content;It includes air blower and burner body connected to it, air blower is equipped with combustion air and adjusts door, burner body includes the burner inner liner entering the wind general pipeline and communicating therewith, combustion air adjusts that the axle of the air door that door is provided with, air door plate is at least provided with two, it is cylindrical structure that combustion air, which adjusts door, coupled respectively by connection-rod linkage between the axle of the air door of side, combustion air adjusts the air door axis connection for the drive motor side close with its being equipped on door, air door plate split is adjusted in door in combustion air, and there are split seams between the split end of air door plate；The combustible gas distributors being equipped in burner body include distribution drum, distribution drum barrel is provided with the annular cavity that combustible gas inlet is connected on burner body, annular spread inserts fuel gas conduit on distribution drum end face.
Description
Technical field
The utility model relates to technical field of combustion equipment, specially a kind of low NO.
Background technique
Nitrogen oxides (including NO, NO2、N2O、N2O3、N2O5It is referred to as N0x) it is one of main atmosphere pollution, nitrogen oxygen
Compound is the Main Factors that acid rain is formed, and is one of main producers object for generating ozone and photochemical fog and forming region
The major reason of ultra-fine grain (PM2.5) pollution and gray haze；And gas fuel burning product withdraw is the main row of nitrogen oxides
One of source is put, although the N0 of its dischargexIn to have 90% or so be the lesser NO of toxic, 10% or so is that toxic ratio NO is big by 4~5
NO again2, but NO is discharged into the oxygen after atmosphere easily and in atmosphere and combines generation NO again2, and NO2It is the master for influencing atmosphere quality
One of factor is wanted, then faces increasingly serious environmental problem, the hair of " energy conservation, emission reduction, consumption reduction and protection environment " has been drafted by country
Exhibition strategy, and tightened up requirement is proposed to the discharge of control nitrogen oxides in the form of legislation, nitrogen oxides has been included in dirt
N0x discharge amount in combustion product is dropped to lower have become for gas fuel burning by the binding indicator of dye object discharge
Industrial burner technical field first develops direction, and is defined as the important indicator of burner performance superiority and inferiority.
And burner, it is a kind of device for making fuel and air spray mixed firinor fuel burning in a certain way, currently on the market
Through there are the burners of a variety of maturations, but there is also many shortcomings, wherein fuel gas in combustion, combustion air
Air quantity largely determine combustion conditions and efficiency of combustion, to influence the production quantity of nitrogen oxides, be currently used for adjusting
The shutter adjustment structure of combustion air amount size, mainly by installing single axle of the air door in shutter, in axle of the air door
Upper that air door plate is housed, combustion air plays regulating air volume by single axle of the air door and air door plate rotation, but for big function
For rate, large-sized burner, single axle of the air door intensity is inadequate, and is not easy to rotate, to will affect the air inlet of combustion air
Amount, also just will increase the generation of nitrogen oxides；In addition, critical component of the combustion head as burner, for burner whether
The requirement for reducing N0x discharge in combustion product to greatest extent can be reached, play the role of vital, but existing burning
Head internal structure design, manufacture are not reasonable, i.e., fuel gas and combustion air in combustion head are respectively corresponded through single air distribution
Cylinder and fuel gas conduit spray, such that fuel gas and combustion air mixing are uneven, will also make boiler connected to it
Burner hearth, i.e. burning room temperature is less uniform, has the phenomenon that localized hyperthermia, combustion product burns in this high-temperature area, then N0x
Generation rate will be bigger, the N0x contained in combustion product is higher, and the N0x being discharged into atmosphere is also more, and also deposits
It is excessively concentrated in the flame that combustion head sprays, easily causing flame inside, temperature is excessively high herein, the relatively low combustion position of other side temperature,
And it can equally make the generation rate of N0x increase, and also just be unable to reach national requirements for environmental protection, to hinder the development of enterprise.
Summary of the invention
It can not be suitable for high-power, large-sized burner, combustion air wind for the air inlet adjustment door of existing use
Amount is not easy to adjust, Yi Zengjia formation of nitrogen oxides；And combustion head internal structure is unreasonable in existing burner, so that flammable
Gas and combustion air mixing are uneven, and the flame that combustion head sprays excessively is concentrated, to increase the generation rate of N0x, is improved
N0x content in combustion product, the problem of being unable to reach national requirements for environmental protection, the utility model provides a kind of low NO,
It has a wide range of application, conveniently adjusted combustion air amount, and structurally reasonable, and it is equal not only to may make that fuel gas and combustion air mix
It is even, it can also solve flame and the problems in excessively collect, so as to substantially reduce N0x content in combustion product, meet national environmental protection and want
It asks, promotes enterprise development.
Its technical solution is such comprising air blower and burner body connected to it, the snail of the air blower
Shell air inlet be equipped with combustion air adjust door, the burner body include air inlet general pipeline, combustion head, the combustion head include with
The burner inner liner of the air inlet general pipeline connection, the burner inner liner are provided with air duct, fuel gas conduit, and the burner body is equipped with can
Gas feed, port are fired, the combustion air adjusts door and is provided with axle of the air door and loaded on the air door plate on the axle of the air door, spy
Sign is: it is cylindrical structure that the combustion air, which adjusts door, and at least provided with two, side is adjacent for the axle of the air door, air door plate
Coupled respectively by connection-rod linkage between the axle of the air door, the combustion air, which is adjusted, is equipped with drive motor, the driving horse on door
Up to the air door axis connection for passing through shaft coupling side close with its, the air door plate split is adjusted in door in the combustion air
Chamber, there are split seams between the split end of the adjacent air door plate；Combustible gas distributors, institute are equipped in the burner body
Stating combustible gas distributors includes being connected to the distribution drum for matching air duct air intake, the distribution drum barrel be provided with it is described can
The annular cavity of combustion gas body inlet communication, annular spread inserts the combustion on the distribution drum end face with air duct side
Tracheae, the fuel gas conduit are connected with the annular cavity.
It is further characterized by:
It further includes mixing drum, the combustion air adjust door by the mixing drum be connected to the spiral case of the air blower into
At air port, the air inlet that the combustion air adjusts door is equipped with combustion air filter, is equipped on the mixing drum into flue gas tune
Save valve；
The drive motor is installed on the combustion air by motor bracket and adjusts on door, and the axle of the air door is equipped with 6, point
For axle of the air door I, axle of the air door II, axle of the air door III, axle of the air door IV, axle of the air door V, axle of the air door VI；The air door plate is equipped with 3 pieces, is divided into
Air door plate I, air door plate II, air door plate III；The axle of the air door I, axle of the air door II, axle of the air door III and axle of the air door IV, axle of the air door V, wind
Door-hinge VI, which respectively corresponds, is symmetrically disposed on the combustion air adjusting door inner cavity upper and lower side, and the air door plate I is connected to the air door
Between axis I, axle of the air door IV, the air door plate II is connected between the axle of the air door II, axle of the air door V, and the air door plate III connects
Between the axle of the air door III, axle of the air door VI, the drive motor is connect by passing through the shaft coupling with the axle of the air door I,
The axle of the air door IV, axle of the air door V are coupled respectively by the connection-rod linkage between axle of the air door VI；The air door plate I, air door plate
II, it is in corresponding arc that the outer end of air door plate III adjusts door inner cavity wall surface with the combustion air；
The combustible gas distributors further include the connection ring to match with the distribution drum, the outer ring surface of the connection ring
On be provided with connecting hole, the connection ring of the corresponding connecting hole is equipped with hollow protrusion, described point of the corresponding protrusion
It is equipped with groove, the distribution drum and the connection ring with cylinder end face to be cooperatively connected by the protrusion, groove, the fuel gas conduit
It is plugged in the connecting hole；
The air duct of matching at the port is provided with stable flame pan cylinder, and the stable flame pan cylinder is provided with Whirl deposite tank
Mouthful, the swirl diffuser includes swirl cylinder, and the swirl cylinder is assemblied in the stable flame pan cylinder by supporting plate, in the swirl cylinder
Being circular layout along its inner wall has spinning disk, and the spinning disk tilts installation, and its tilt angle is 30 ° ~ 50 °；
The port end with air duct is equipped with air distribution stable flame pan, and is provided with ventilation hole on the air distribution stable flame pan, institute
Air distribution stable flame pan to be stated to be connected with the stable flame pan cylinder, the fuel gas conduit is divided into the first fuel gas conduit, the second fuel gas conduit, and described second
Fuel gas conduit is equipped at least 6, and is circular layout along the air distribution drum outer wall, and first fuel gas conduit, second fuel gas conduit one end are equal
It is plugged in the connecting hole in the connection ring, the first fuel gas conduit other end is successively from described with air duct, stable flame pan cylinder, rotation
Stream air port, air distribution stable flame pan center pass through, and the second fuel gas conduit other end is across the air distribution stable flame pan and steady by air distribution
The bearing of flame disk；
The second combustion gas tube end at the port is equipped with the classification fuel gas conduit communicated therewith, the classification
Fuel gas conduit is obliquely installed, and its tilt angle is 30 ° ~ 60 °, and the classification fuel gas conduit is set in the burner inner liner；
First fuel gas conduit, the second fuel gas conduit, be classified fuel gas conduit outlet end be respectively arranged with spray head, first combustion gas
Pipe, the second fuel gas conduit, be classified fuel gas conduit the spray head on be provided with end-face hole, in first fuel gas conduit, the second fuel gas conduit
The spray head side wall be also provided with radial hole；
The internal diameter of the air inlet general pipeline is greater than the internal diameter of the burner inner liner, and the internal diameter of the burner inner liner is greater than the distribution drum
Internal diameter, the internal diameter of the distribution drum is greater than the internal diameter for matching air duct；
The air inlet general pipeline is connected with air blower, is equipped at the combustible gas inlet into gas control valve；It is described
Gas ignition rifle is fitted in burner inner liner, the gas ignition rifle is supported in the distribution drum by bracket, the burner inner liner
Ignitor is housed on the interior gas ignition rifle.
Multiple axle of the air door and air door plate are set the utility model has the beneficial effects that adjusting in door in combustion air, pass through drive
Dynamic motor driving, corresponding axle of the air door drive air door plate overturning to reduce nitrogen oxygen to facilitate the adjusting for realizing combustion air amount
Compound production quantity, and it is applicable to high-power, large-sized burner；And by being equipped with fuel gas in burner body
Distributor, fuel gas conduit annular spread are plugged in distribution drum, and are connected with the annular cavity of distribution drum, and at port
With swirl diffuser is equipped in air duct, then combustion air is divided into two-stage after entering burner body by air inlet general pipeline, and one is grading
Enter in air duct, second level enters burner inner liner and with the runner between air duct, and fuel gas enters burning by combustible gas inlet
It after device body, is assigned in multiple fuel gas conduits by distribution drum, is divided into multiply combustion gas stream and burns, to realize
The technology of combustion air fractional combustion, fuel gas fractional combustion, and fuel gas and combustion air may make by the fractional combustion
When uniformly mixed and Actual combustion, flame segmentation burning is formd, heat dissipation area is increased, avoids flame and excessively concentrate
The case where, N0x content in combustion product is thus greatly reduced, and may conform to national requirements for environmental protection, promotes the development of enterprise.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the left view structural representation of Fig. 1；
Fig. 3 is the assembling structure schematic diagram that mixing drum and combustion air adjust door；
Fig. 4 is the left view structural representation of Fig. 3；
Fig. 5 is the right side structural representation of Fig. 3；
Fig. 6 is the broken section structural schematic diagram of burner body；
Fig. 7 is the right side structural representation of Fig. 6；
Fig. 8 is the structural schematic diagram of combustible gas distributors.
Specific embodiment
As shown in Fig. 1 ~ Fig. 8, the utility model includes air blower 32 and burner body 1 connected to it, air blower 32
Spiral case air inlet be equipped with combustion air adjust door 33, burner body 1 include air inlet general pipeline 2, combustion head, combustion head include with
The burner inner liner 3 that general pipeline 2 is connected to is entered the wind, burner inner liner 3 is provided with air duct 4, fuel gas conduit 5, and burner body 1 is equipped with fuel gas
Import 5, port 6, combustion air adjust door 33 and are provided with axle of the air door and loaded on the air door plate on axle of the air door, combustion air adjusting door 33
For cylindrical structure, axle of the air door, air door plate are linked by connecting rod 34 between the adjacent axle of the air door in side respectively at least provided with two
Connection, combustion air adjust and drive motor 35 are housed on door 33, and drive motor 35 passes through the air door of the side close with its of shaft coupling 36
Axis connection, there are split seams between combustion air adjusting 33 inner cavity of door, the split end of adjacent air door plate for air door plate split, so that wind
Door-plate has rotation space, convenient for rotation；Combustible gas distributors are equipped in burner body 1, combustible gas distributors include connecting
It is connected to the distribution drum 7 with 4 air intake of air duct, 7 barrel of distribution drum is provided with the annular cavity 8 being connected to combustible gas inlet 5, is located at
Annular spread inserts fuel gas conduit on 7 end face of distribution drum with 4 side of air duct, and fuel gas conduit is connected with annular cavity 8.
It further includes mixing drum 37, and combustion air adjusts the spiral case air inlet that door 33 is connected to air blower 32 by mixing drum 37
Place, the air inlet that combustion air adjusts door 33 are equipped with combustion air filter 38, and combustion air filter 38 includes filter screen, and
It is installed on the air inlet that combustion air adjusts door 33, is equipped on mixing drum 37 into smoke regulating valve 39；Drive motor 35 passes through horse
It is installed on combustion air up to bracket 40 to adjust on door 33, axle of the air door is equipped with 6, is divided into axle of the air door I 41, axle of the air door II 42, axle of the air door
III 43, axle of the air door IV 44, axle of the air door V 45, axle of the air door VI 46；Air door plate be equipped with 3 pieces, be divided into air door plate I 47, air door plate II 48,
Air door plate III 49；Axle of the air door I 41, axle of the air door II 42, axle of the air door III 43 and axle of the air door IV 44, axle of the air door V 45, axle of the air door VI 46
It respectively corresponds and is symmetrically disposed on combustion air adjusting 33 inner cavity upper and lower side of door, air door plate I 47 is connected to axle of the air door I 41, axle of the air door IV
Between 44, air door plate II 48 is connected between axle of the air door II 42, axle of the air door V 45, air door plate III 49 be connected to axle of the air door III 43,
Between axle of the air door VI 46, drive motor 35 by shaft coupling 36 with axle of the air door I 41 by being connect, axle of the air door IV 44, axle of the air door V
45, between axle of the air door VI 46 respectively by connecting rod 34 linkage connection, i.e., axle of the air door IV 44, axle of the air door V 45, axle of the air door VI 46 with
It is connected by a hinge between connecting rod 34；Air door plate I 47, air door plate II 48, air door plate III 49 outer end with combustion air adjust
33 inner cavity wall surfaces of door are in corresponding arc；Then combustion air 50 adjusts door 33 from combustion air and enters, and drive motor 33 starts, and drives wind
Door-hinge I 41 rotates, and then remaining axle of the air door can be driven to rotate by connecting rod 34, to drive air door plate I 47, air door plate II
48, synchronous 0 ° ~ 90 ° of the overturning of air door plate III 49, so that air door plate I 47, air door plate II 48, air door plate III 49 and combustion air adjust door
Gap is generated between 33 inner cavities, the combustion air amount for being effectively applicable to high-power, large-sized burner is adjusted.
Air inlet general pipeline 2 is connected with air blower, is equipped at combustible gas inlet 5 into gas control valve 9；In burner inner liner 3
It is fitted with gas ignition rifle 10, gas ignition rifle 10 is supported in distribution drum 7 by bracket 11, the gas ignition in burner inner liner 3
It first passes through ignitor 12 at work equipped with ignitor 12 on rifle 10 and lights gas ignition rifle 10, then gas ignition
The torch of rifle 10 is primary and secondary fuel gas is lighted, to realize two-stage ignition mode, which is more safe and reliable and puts down
Surely, burner body can be greatly reduced and opens the accident rate occurred when furnace igniting.
Combustible gas distributors further include the connection ring 13 to match with distribution drum 7, are provided on the outer ring surface of connection ring 13
Connecting hole 14, the connection ring 13 for being correspondingly connected with hole 14 are equipped with hollow protrusion 15, set on 7 end face of distribution drum of respective protrusions 15
Fluted 16, distribution drum 7 and connection ring 14 are cooperatively connected by protrusion 15, groove 16, and fuel gas conduit is plugged in connecting hole 14, then
It according to circumstances can very easily dismantle, replace fuel gas conduit, and direction and the angle of the ejection of adjustment fuel gas conduit upper nozzle can be facilitated,
Also it is just easy to change the direction for spraying combustion gas stream and angle, integral combustion operating condition is made more to meet boiler furnace structure and form,
It carry out burning can steadily in fuel-rich and oxygen-enriched each combustion zone, and keep the flame degree of filling of boiler furnace more perfect.
It is provided with stable flame pan cylinder 17 with air duct 4 at port 6, stable flame pan cylinder 17 is provided with swirl diffuser 18, rotation
Flowing air port 18 includes swirl cylinder 19, and swirl cylinder 19 is assemblied in stable flame pan cylinder 17 by supporting plate 26, along its inner wall in swirl cylinder 19
Being circular layout has spinning disk 20, and spinning disk 20 tilts installation, and its tilt angle is 40 °, be may make by swirl diffuser 18
What is entered forms eddy flow with the combustion air in air duct 4, guarantees stable ignition, improves ignition of flammable vapour stability.
6 end of port with air duct 4 is equipped with air distribution stable flame pan 21, and ventilation hole, air distribution are provided on air distribution stable flame pan 21
Stable flame pan 21 is connected with stable flame pan cylinder 17, and fuel gas conduit is divided into the first fuel gas conduit 22, the second fuel gas conduit 23, and the second fuel gas conduit 23 is set
There are 6, and be circular layout along with 4 outer wall of air duct, the first fuel gas conduit 22,23 one end of the second fuel gas conduit are plugged in connection ring 13
Connecting hole 14 in, 22 other end of the first fuel gas conduit successively autogamy air duct 4, stable flame pan cylinder 17, swirl diffuser 18, air distribution stable flame pan
21 centers pass through, and 23 other end of the second fuel gas conduit passes through air distribution stable flame pan 21 and supported by air distribution stable flame pan 21；Close to burning
23 end of the second fuel gas conduit at mouth 6 is equipped with the classification fuel gas conduit 24 communicated therewith, and classification fuel gas conduit 24 is obliquely installed, and it inclines
Rake angle is 30 °, and classification fuel gas conduit 24 is set in burner inner liner 3；First fuel gas conduit 22, the second fuel gas conduit 23, classification fuel gas conduit
24 outlet end is respectively arranged with spray head, and the first fuel gas conduit 22, the second fuel gas conduit 23 are classified on the spray head of fuel gas conduit 24 and are provided with end face
Hole is also provided with radial hole 25 in the spray head side wall of the first fuel gas conduit 22, the second fuel gas conduit 23；The internal diameter for entering the wind general pipeline 2 is greater than fire
The internal diameter of flame cylinder 3, the internal diameter of burner inner liner 3 are greater than the internal diameter of distribution drum 7, and the internal diameter of distribution drum 7 is greater than the internal diameter with air duct 4.
The working principle of the utility model is that fuel gas 27 enters burner body 1 from into gas control valve 9, is passed through
Distribution drum 7 is assigned in more fuel gas conduits, wherein the combustible gas into first fuel gas conduit 22 at center in burner body 1
Body is as a fuel gas, and gas flow is only the 7.6% of combustion gas total amount, and spouting velocity is relatively low；Into the second combustion gas
Fuel gas in pipe 23 is as secondary fuel gas, and secondary fuel gas is respectively by the second fuel gas conduit 23 and classification combustion
What tracheae 24 sprayed, wherein the gas flow by the ejection of 6 second fuel gas conduits 23 is the 46.2% of combustion gas total amount, spouting velocity
Relatively high, being classified the gas flow that fuel gas conduits 24 spray by 6 is the 46.2% of combustion gas total amount, spouting velocity also highest, by
This, fuel gas is divided into 13 shallow bid combustion gas streams and burns, that is, realizes combustion gas fractional combustion；In addition, can
Combustion gas body is divided into 13 shallow bid combustion gas and burns, and is actually formed 13 small torch flame segmentation burning, so that
Heat dissipation area also becomes larger, and avoids the case where flame is excessively concentrated, so that entire combustion flame temperature just reduces, N0x production quantity
It is just few；Secondly whole flame can shorten small after flame is divided, and will shorten residence time of the gases such as oxygen, nitrogen in flame, this
Sample also has apparent oxygen inhibition to act on the generation of N0x；
Combustion air required for burner body 1 burns is oxygen, is provided by air blower, but is mixed in general combustion air
There is 18% or so low-temperature flue gas 31, and utilize heat absorption and the dilution oxygen concentration of inert gas in flue gas, flame temperature can be made to drop
It is low, and low oxygen combustion is formed, burning velocity is effectively inhibited, the generation of heating power type N0x can be reduced；Then it is mixed into certain proportion low temperature
After the combustion air 50 of flue gas is from air inlet general pipeline 2 into burner body 1, it is divided into a combustion air and secondary combustion-supporting wind, once
Combustion air 29 is by with the fuel gas sprayed in combustion-supporting first fuel gas conduit 22 of air duct 4, and the excess air system of a combustion air
Number α < 0.9, and as fuel-rich combustion, the combustion zone anoxic and temperature of the combustion-supporting formation are relatively low, N0x production rate can be reduced,
And by using air duct 4 is matched, center wind speed can be slowed down, and eddy flow is formed by swirl diffuser 18, it is ensured that with returning in air duct 4
The igniting of area's steady and continuous is flowed, to improve ignition of flammable vapour stability；Secondary combustion-supporting wind is divided into two parts again, and a part helps
Combustion wind by with 4 inner wall of air duct formed the combustion-supporting direct current wind 28 of secondary fuel gas come combustion-supporting 6 the second fuel gas conduits 23 spray can
Combustion gas body, the excess air coefficient α < 0.8 of the secondary combustion-supporting direct current wind of fuel gas, is still as fuel-rich combustion, at this
Under part, not only temperature is relatively low for the combustion zone of the combustion-supporting formation, but also can also form the very strong atmosphere of reducing atmosphere, not only can be with
The generation for inhibiting N0x, the N0x generated in gas fuel burning area can also be restored, the production quantity of N0x can be greatly reduced；It is another
Part combustion air is as secondary fuel gas combustion air 30, by by air inlet general pipeline 2, burner inner liner 3, distribution drum 7 and matching 4 groups of air duct
At annular channel flowing from left to right allow for its wind speed also by low change since it enters the wind sectional area by gradually becoming smaller greatly
Height, and mixed strongly after intersecting with oblique, the secondary fuel gas of high speed of the classification ejection of fuel gas conduit 24, secondary combustible gas herein
The excess coefficient α > 1.08 of body combustion air, combustion conditions are still oxygen-enriched combusting, can make to be classified the fuel gas that fuel gas conduit 24 sprays
Into air excess zonal combustion and after-flame, so that second-time burning peak flame temperature be made to decline, it is suppressed that the generation of N0x
Amount, wherein flame is layering when burning, and the flame region in bosom is divided into single-stage combustion region, single-stage combustion region with
Outer combustion zone is as secondary firing region, and in secondary firing region, the secondary fuel gas combustion air and volume of α > 1.08
The flue gas sucked in meets with the rich gas fuel burning product generated in the combustion zone of the combustion-supporting formation of combustion air, mixes directly
To after-flame；Then in the burning header structure of the utility model, fuel gas fractional combustion, combustion air fractional combustion are realized, and
The formation that highest flame temperature is all avoided in fractional combustion, can not only reduce nitrogen, oxygen concentration, also can be effectively suppressed N0x's
It generates, thus, total N0x production quantity is lower in entire combustion process, meets national requirements for environmental protection, can promote enterprise
Development, and may make fuel gas and combustion air to be uniformly mixed by the fuel gas fractional combustion, combustion air fractional combustion.
Claims (10)
1. a kind of low NO comprising air blower and burner body connected to it, the spiral case air inlet of the air blower
Mouthful place be equipped with combustion air adjust door, the burner body include enter the wind general pipeline, combustion head, the combustion head include with it is described into
The burner inner liner of wind general pipeline connection, the burner inner liner are provided with air duct, fuel gas conduit, and the burner body is equipped with fuel gas
Import, port, the combustion air adjusting door is provided with axle of the air door and loaded on the air door plate on the axle of the air door, feature exists
Adjusting door in: the combustion air is cylindrical structure, and the axle of the air door, air door plate are at least provided with two, adjacent described in side
Coupled respectively by connection-rod linkage between axle of the air door, the combustion air adjusts and drive motor is housed on door, and the drive motor is logical
The air door axis connection of shaft coupling side close with its is crossed, the air door plate split adjusts door inner cavity, phase in the combustion air
There are split seams between the split end of the adjacent air door plate；Be equipped with combustible gas distributors in the burner body, it is described can
Combustion gas distributor includes being connected to the distribution drum for matching air duct air intake, and the distribution drum barrel is provided with and the combustible gas
The annular cavity of body inlet communication, annular spread inserts the combustion gas on the distribution drum end face with air duct side
Pipe, the fuel gas conduit are connected with the annular cavity.
2. a kind of low NO according to claim 1, it is characterised in that: it further includes mixing drum, the combustion air
The spiral case air inlet that door is connected to the air blower by the mixing drum is adjusted, the combustion air adjusts the air inlet of door
Equipped with combustion air filter, it is equipped on the mixing drum into smoke regulating valve.
3. a kind of low NO according to claim 1, it is characterised in that: the drive motor is pacified by motor bracket
It is adjusted on door loaded on the combustion air, the axle of the air door is equipped with 6, is divided into axle of the air door I, axle of the air door II, axle of the air door III, axle of the air door
IV, axle of the air door V, axle of the air door VI；The air door plate is equipped with 3 pieces, is divided into air door plate I, air door plate II, air door plate III；The air door
Axis I, axle of the air door II, axle of the air door III and axle of the air door IV, axle of the air door V, axle of the air door VI, which respectively correspond, is symmetrically disposed on the combustion air
Door inner cavity upper and lower side is adjusted, the air door plate I is connected between the axle of the air door I, axle of the air door IV, and the air door plate II is connected to
Between the axle of the air door II, axle of the air door V, the air door plate III is connected between the axle of the air door III, axle of the air door VI, the drive
Dynamic motor by the shaft coupling with the axle of the air door I by being connect, the axle of the air door IV, axle of the air door V, between axle of the air door VI
Coupled respectively by the connection-rod linkage；The air door plate I, air door plate II, air door plate III outer end with the combustion air
Adjusting door inner cavity wall surface is in corresponding arc.
4. a kind of low NO according to claim 1, it is characterised in that: the combustible gas distributors further include with
The connection ring that the distribution drum matches, is provided with connecting hole on the outer ring surface of the connection ring, the corresponding connecting hole it is described
Connection ring is equipped with hollow protrusion, and the distribution drum end face of the corresponding protrusion is equipped with groove, the distribution drum and institute
It states connection ring to be cooperatively connected by the protrusion, groove, the fuel gas conduit is plugged in the connecting hole.
5. a kind of low NO according to claim 4, it is characterised in that: the air distribution at the port
Cylinder is provided with stable flame pan cylinder, and the stable flame pan cylinder is provided with swirl diffuser, and the swirl diffuser includes swirl cylinder, the swirl cylinder
It is assemblied in the stable flame pan cylinder by supporting plate, being circular layout in the swirl cylinder along its inner wall has spinning disk, the spinning disk
Inclination installation, and its tilt angle is 30 ° ~ 50 °.
6. a kind of low NO according to claim 5, it is characterised in that: the port end with air duct is equipped with
Air distribution stable flame pan, and ventilation hole is provided on the air distribution stable flame pan, the air distribution stable flame pan is connected with the stable flame pan cylinder, institute
It states fuel gas conduit and is divided into the first fuel gas conduit, the second fuel gas conduit, second fuel gas conduit is equipped at least 6, and along described with outside air duct
Wall circular arrangement, first fuel gas conduit, second fuel gas conduit one end be plugged in the connecting hole in the connection ring, and described the
The one fuel gas conduit other end is successively passed through from described with air duct, stable flame pan cylinder, swirl diffuser, air distribution stable flame pan center, and described second
The fuel gas conduit other end passes through the air distribution stable flame pan and is supported by the air distribution stable flame pan.
7. a kind of low NO according to claim 6, it is characterised in that: described second at the port
Combustion gas tube end is equipped with the classification fuel gas conduit that communicates therewith, and the classification fuel gas conduit is obliquely installed, and its tilt angle for 30 ° ~
60 °, the classification fuel gas conduit is set in the burner inner liner.
8. a kind of low NO according to claim 7, it is characterised in that: first fuel gas conduit, the second fuel gas conduit,
The outlet end of classification fuel gas conduit is respectively arranged with spray head, and first fuel gas conduit, is classified on the spray head of fuel gas conduit the second fuel gas conduit
It is provided with end-face hole, is also provided with radial hole in the spray head side wall of first fuel gas conduit, the second fuel gas conduit.
9. a kind of low NO according to claim 1, it is characterised in that: the internal diameter of the air inlet general pipeline is greater than described
The internal diameter of burner inner liner, the internal diameter of the burner inner liner are greater than the internal diameter of the distribution drum, and the internal diameter of the distribution drum is greater than described match
The internal diameter of air duct.
10. a kind of low NO according to claim 1, it is characterised in that: the air inlet general pipeline is connected with air blower,
It is equipped at the combustible gas inlet into gas control valve；Gas ignition rifle, the combustion gas are fitted in the burner inner liner
Burning torch is supported in the distribution drum by bracket, and ignitor is housed on the gas ignition rifle in the burner inner liner.
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| CN201821152054.XU CN208606167U (en) | 2018-07-20 | 2018-07-20 | A kind of low NO |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821152054.XU CN208606167U (en) | 2018-07-20 | 2018-07-20 | A kind of low NO |
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| CN208606167U true CN208606167U (en) | 2019-03-15 |
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