CN208859595U - A kind of low nitrogen gas burner - Google Patents
A kind of low nitrogen gas burner Download PDFInfo
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- CN208859595U CN208859595U CN201821494595.0U CN201821494595U CN208859595U CN 208859595 U CN208859595 U CN 208859595U CN 201821494595 U CN201821494595 U CN 201821494595U CN 208859595 U CN208859595 U CN 208859595U
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Abstract
The utility model discloses a kind of low nitrogen gas burners, including burner body, burner body includes the inner barrel and outer barrel of coaxial arrangement, the same end of inner barrel and outer barrel is open and forms port, region in inner cylinder is inner combustion chamber, region between outer cylinder and inner cylinder is exterior combustion chamber, altar lamp is provided in inner combustion chamber, altar lamp extends at port, several combustion gas inner tubes are evenly distributed in inner combustion chamber centered on altar lamp, several combustion gas outer tubes are evenly distributed in exterior combustion chamber centered on altar lamp, several combustion gas inner tubes, combustion gas outer tube extends at port and end is provided with gas spray head, smoke inlet is provided on inner cylinder, circulating flue gas is passed through in smoke inlet, air inlet is provided on outer cylinder, combustion air is passed through in air inlet, combustion gas inner tube, main combustion gas is passed through in combustion gas outer tube.Said burner improves low nitrogen burning effect, has low high combustion efficiency, discharged nitrous oxides, energy conservation and environmental protection, adjusting than big advantage.
Description
Technical field
The utility model relates to boiler-burner equipment technical field more particularly to a kind of low nitrogen gas burners.
Background technique
Burner is that the device for making fuel and air spray mixed firinor fuel burning in a certain way is referred to as.Mainstream burner one at present
As by 1 ' of combustion gas tube assembly, 2 ' of combustion-supporting wind pipe component, 3 ' of gas spray head, 4 ' of steady combustion cover, 5 ' of altar lamp, high energy ignition unit and fire
Fuel and air are sent into burner hearth in required ratio, speed and hybrid mode, and make to fire by the components such as 6 ' of flame detector composition
Material can simultaneously completely burned passes through stable ignition as shown in fig. 7,7 ' of burning torch is mounted on the inside of altar lamp 5' in burner hearth
External high-energy explosion-proof igniter can carry out electrion, while 7 ' of burning torch electric discharge, open ignitron road quick-break valve, point
7 ' of firelock can directly light igniting combustion gas, can conclude that whether small fire lights a fire success by the signal that 6 ' of flame detector is fed back, small
After fire is lighted a fire successfully, 7 ' of burning torch exits 300~400 millimeters of distance by 8 ' of Pneumatic explosion-prevention propeller backward, guarantees igniting
7 ' of rifle prevents heat radiation from damaging far from flame zone, after small fire stablizes burning, that is, the quick-break valve on main combustible pipe road is opened, by small fire
It ignites high fire, load up after high fire is ignited successfully, i.e. increase fuel tolerance, while combustion air volume is regulated by fuel air distribution ratio,
Guarantee that main fuel stablizes burning.1 ' of combustion gas tube assembly, 2 ' of combustion-supporting wind pipe component, 3 ' of gas spray head, 4 ' of steady combustion cover are to guarantee main combustion
Expect that gas stablizes the core members of burning, if the case where problematic easy appearance tempering, fire extinguishing or incomplete combustion.
Normal burner is only able to satisfy combustion efficiency, and the amount of nitrogen oxides in combustion product gases is very rambunctious, nitrogen
The formation mechanism of oxide is more complicated, can be divided into three classes: heating power type, Quick-type and fuel type.The life of thermal NO
At related with temperature, when temperature is less than 1500 DEG C, the production quantity of thermal NO is seldom, and when temperature is greater than 1500 DEG C
When, every to increase by 100 DEG C, reaction rate increases 6~7 times.Prompt NO is the nytron when hydrocarbon class A fuel A overrich
The product of nitrogen reaction further aoxidizes in the CH free radical and air that object pyrolytic generates.Fuel NO
Generation it is related with nitrogen content in fuel.
So said burner has the following deficiencies: that one) combustion flame is too long, small size burner hearth uses this burner, fire
Flame easily burns opposite furnace wall；Two) combustion flame can not be adjusted, and not can guarantee the uniformity in temperature field in burner hearth；Three) combustion flame
It concentrates, flame temperature is higher, and thermal NO generation is more, discharges not up to standard；Four) do not consider combustion chamber draft it is extraneous because
Element, than small, gas quantity fluctuates the case where easily causing combustion instability for the adjusting of burner.
Increasingly higher demands are proposed to the discharge of nitrogen oxides in view of current countries in the world, for effectively control pollutant
Discharge, it is desirable to the low low nitrogen gas burner of a kind of high combustion efficiency of R & D design, discharged nitrous oxides.
Utility model content
The purpose of this utility model is to provide a kind of low nitrogen gas burners, in view of the above-mentioned problems, combustion flame is adjusted,
NO_x formation is controlled, efficiency of combustion and stability are improved.
In order to achieve the above object, the utility model uses following technical scheme:
A kind of low nitrogen gas burner comprising burner body, burner body include the inner cylinder of coaxial arrangement and outer
Cylinder, the same end of inner barrel and outer barrel are open and form port, and the region in inner cylinder is inner combustion chamber, between outer cylinder and inner cylinder
Region is exterior combustion chamber, and altar lamp is provided in inner combustion chamber, and altar lamp extends at port, with altar lamp in inner combustion chamber
Centered on be evenly distributed in several combustion gas inner tubes, several combustion gas outer tubes are evenly distributed in exterior combustion chamber centered on altar lamp,
Several combustion gas inner tubes, combustion gas outer tube extend at port and end is provided with gas spray head, are provided with smoke inlet on inner cylinder,
It is passed through circulating flue gas in smoke inlet, air inlet is provided on outer cylinder, combustion air, combustion gas inner tube, combustion gas outer tube are passed through in air inlet
In be passed through main combustion gas.The exhaust gas nozzle structure of Internal and external cycle arrangement is burnt more abundant so that flame is spread out, and inhibits nitrogen oxides
It generates.
Wherein, air inlet to port is provided with partition in exterior combustion chamber, forms the first distribution plenum and the second distribution plenum,
First distribution plenum is located in the second distribution plenum, and combustion gas outer tube is set in the first distribution plenum, right in inner combustion chamber, the first distribution plenum
It answers combustion gas inner tube, be respectively arranged with steady combustion cover at the gas spray head of combustion gas outer tube.Guarantee that flame root-burn is stablized, be not tempered,
It does not put out a fire, not blowing out.
Wherein, the port end of outer cylinder is provided with intilted slanting baffle, and the wind in the second distribution plenum passes through slanting baffle
Gather to center.Gather combustion air, improves efficiency of combustion.
Wherein, the eddy flow of two steady combustion covers is contrary.Promote the mixing effect of circulating flue gas and combustion air at port
Fruit is conducive to low nitrogen burning.
Wherein, corresponding first distribution plenum of air inlet, the second distribution plenum are respectively arranged with the first damper and second and adjust
Air door is saved, the shaft of two dampers is articulated on the tube wall of air inlet, and the air distribution tune of drive shaft is provided with outside tube wall
Pole.The proportion that air output in two distribution plenums is controlled by air distribution adjusting rod, to control the size and rigidity of flame.
Wherein, third damper is provided at smoke inlet, for controlling smoke.
Wherein, burner body further includes combustion gas ring casing, and combustion gas ring casing is set to outer cylinder periphery, is provided on combustion gas ring casing
Fuel gas inlet and several combustion gas branch pipes are passed through main combustion gas, each combustion gas branch pipe and combustion gas inner tube, combustion gas outer tube one in fuel gas inlet
One is correspondingly connected with, and is provided on each combustion gas branch pipe and adjusts hand valve.Each pipe gas quantity is controlled by adjusting hand valve, for adjusting
Flame size is saved, guarantees low nitrogen burning.
Wherein, each combustion gas inner tube, combustion gas outer tube and altar lamp are corresponded on the inner wall or outer wall of inner cylinder be provided with several fixations
Bracket.Guarantee fixed effect.
Wherein, the non-burning mouth end of inner cylinder is provided with installation backboard, and altar lamp is fixed on installation backboard, and and igniter
Connection.
Wherein, it installs on backboard and is provided with fire monitor equipment into inner combustion chamber.
To sum up, the beneficial effects of the utility model are that compared with prior art, the low nitrogen gas burner passes through circumferential direction
The combustion gas inner tube of setting, combustion gas outer tube cooperation circulating flue gas, combustion air stablize burning non-interferencely around altar lamp, due to
In contrast heat dissipation area is big, temperature is low for combustion flame, it is suppressed that thermal NO generates, to reach low nitrogen, energy conservation
The purpose of burning, and the setting of multiple opposition fuel gas pipelines is so that burner has big adjusting ratio, in addition, the knot of two distribution plenums
Structure can control flame intensity and flame rigidity by adjusting air quantity ratio, further improve low nitrogen burning effect, have combustion
Burn that high-efficient, discharged nitrous oxides are low, energy conservation and environmental protection, adjusting is than big advantage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram one of low nitrogen gas burner provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram two of low nitrogen gas burner provided by the embodiment of the utility model；
Fig. 3 is the front view at the port of low nitrogen gas burner provided by the embodiment of the utility model；
Fig. 4 is the front view at the installation backboard of low nitrogen gas burner provided by the embodiment of the utility model；
Fig. 5 is cross-sectional view at A-A in Fig. 4；
Fig. 6 is the front view of the air inlet of low nitrogen gas burner provided by the embodiment of the utility model；
Fig. 7 is the structural schematic diagram of existing burner.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
It please refers to shown in Fig. 1 to 6, the present embodiment provides a kind of low nitrogen gas burners, mainly include burner body, combustion
Burner main body includes the inner cylinder 1 and outer cylinder 2 of coaxial arrangement, and the same end of inner cylinder 1 and outer cylinder 2, which is open, forms port 3, inner cylinder
Region in 1 is inner combustion chamber, and the region between outer cylinder 2 and inner cylinder 1 is exterior combustion chamber.
Altar lamp 4 is provided in inner combustion chamber, altar lamp 4 is set to 1 center of inner cylinder and extends at port 3, internal combustion
It burns and is evenly distributed in several combustion gas inner tubes 5 in room centered on altar lamp 4, it is equal for center circumference with altar lamp 4 in exterior combustion chamber
It is furnished with several combustion gas outer tubes 6, carries out examples in the present embodiment with eight combustion gas inner tubes 5 and eight combustion gas outer tubes 6, totally ten six combustions
Gas inner tube 5, combustion gas outer tube 6 extend at port 3 and end is provided with gas spray head 7, i.e., 16 gas spray heads 7 are in inside and outside
Circle is arranged in around altar lamp 4, and each combustion gas inner tube 5, combustion gas outer tube 6 and altar lamp 4 are corresponded on the inner wall or outer wall of inner cylinder 1 and is set
Several fixed brackets 23 are equipped with, to guarantee fixed effect.16 independent gas spray heads 7 are dispersed in such a way that double-round is arranged
Port 3, a flame that in this way will be original are divided into several flammules, increase flame diameter, reduce the length of flame, by
Big in flammule heat dissipation area, flame temperature is lower, declines heating power type nitrogen oxidation reaction condition, and nitrogen oxides production reduces,
Flammule shortens residence time of the gases such as oxygen, nitrogen in flame simultaneously, to thermal NO and fuel type nitrogen oxidation
Object has apparent inhibiting effect, to reach low nitrogen burning.
It is provided with combustion gas ring casing 19 outside outer cylinder 2, fuel gas inlet 20 and several combustion gas branch pipes 21 are provided on combustion gas ring casing 19,
According to combustion gas inner tube 5, the quantity of combustion gas outer tube 6, the combustion gas branch pipe 21 extended herein is also configured as 16, fuel gas inlet 20
In be passed through main combustion gas, 16 combustion gas branch pipes 21 connect one to one with eight combustion gas inner tubes, 5, eight combustion gas outer tubes 6, and each
It is provided on combustion gas branch pipe 21 and adjusts hand valve 22.Main combustion gas enters combustion gas ring casing 19, is then tapped off to 16 independent combustions
In air pipe, since each combustion gas branch road is all with adjusting hand valve 22, internal gas quantity can be into each independent fuel gas pipeline
Row control, pipeline divide more, and the adjusting ratio of burner is bigger, adjust greatest amount of fuel and smallest amount of fuel than being burner
The ratio between, more important is flame size is adjusted with this, guarantee low nitrogen burning.
It is provided with smoke inlet 8 on inner cylinder 1, circulating flue gas is passed through in smoke inlet 8, third is provided at smoke inlet 8 and adjusts wind
Door 9, for controlling smoke.Herein it is noted that needing anoxycausis as main burning area, relatively due to oxygen ratio
It is small, it is able to suppress the generation of nitrogen oxides, and circulating flue gas herein is after a part burning cooling extracted in burner hearth
Flue gas recycled, can satisfy using needs, and since the thermal capacity of circulating flue gas is big, the temperature of burning can be reduced
Efficiency of combustion not only can be improved in degree, saves firing rate, but also can control the generation of nitrogen oxides, has inhibition to aoxidize
Nitrogen and energy-efficient double effects.
It is provided with air inlet 10 on outer cylinder 2, is passed through combustion air in air inlet 10, from air inlet 10 to burning in exterior combustion chamber
Mouth 3 is provided with partition 11, forms the first distribution plenum 12 and the second distribution plenum 13, the first distribution plenum 12 are located at the second distribution plenum 13
Interior, combustion gas outer tube 6 is set in the first distribution plenum 12, combustion gas inner tube 5 is corresponded in inner combustion chamber, the first distribution plenum 12, outside combustion gas
It is respectively arranged with steady combustion cover 14 at the gas spray head 7 of pipe 6, guarantees that flame root-burn is stablized, 3 end of the port setting of outer cylinder 2
There is intilted slanting baffle 15, the wind in the second distribution plenum 13 is gathered by slanting baffle 15 to center.Combustion air enters external combustion
It after burning room, is classified by 11 structure of internal partition, forms primary combustion air distribution and second-time burning air distribution, primary combustion air distribution
Mainly help the full combustion of outer ring combustion gas, second-time burning air distribution mainly reduces the temperature of burning, strengthens the heat exchange in furnace, favorably
It is restored as early as possible in the nitrogen oxides not being reduced, moreover it is possible to guarantee product after-flame imperfect combustion in inner combustion chamber, to realize
Low nitrogen burning.
Certainly, the contrary setting of eddy flow of two steady combustion covers 14, can eliminate 3 eddy flow of port in this way, so that whole
Flame is more stable, most importantly mixed effect of the promotion circulating flue gas and combustion air at port, is conducive to low nitrogen combustion
It burns.
And corresponding first distribution plenum 12, the second distribution plenum 13 are respectively arranged with 16 and of the first damper at air inlet 10
Second damper 17, the shaft of two dampers are articulated on the tube wall of air inlet 10, and are provided with driving outside tube wall and are turned
The air distribution adjusting rod 18 of axis.The air quantity ratio of primary combustion air distribution and second-time burning air distribution is can be by the first damper 16
It is adjusted with the second damper 17, not only can control the size of flame in this way, but also can control the rigidity of flame, thus
Guarantee the uniformity and better low nitrogen burning effect in temperature field in burner hearth.
3 end of non-burning mouth of inner cylinder 1 is provided with installation backboard, and altar lamp 4 is fixed on installation backboard and connects with igniter
It connects, in addition, being provided with fire monitor equipment 24 into inner combustion chamber on installation backboard, can be visible flare up inspection device or ultraviolet fire inspection device
Etc., for constantly detecting combustion flame for a long time, guarantee equipment safety.
The low nitrogen gas burner at least has a characteristic that
1) combustion flame size facilitates adjustable, so that burner can be used for various types of burner hearths, applicability is stronger；
2) low nitrogen burning significant effect effectively controls the generation of nitrogen oxides, meets emission request, reduces to ecological environment
Damage, it is more environmentally friendly；
3) combustion flame is relatively large in diameter, and distribution is average, and combustion front is spread out, and ensure that the uniformity in temperature field in burner hearth, is fired
It burns more stable, abundant；
4) the adjusting ratio of burner is bigger, and the fluctuation range of main gas quantity is wider, especially underload when can guarantee fortune
Row is stablized, and is not tempered, does not put out a fire, not blowing out；
5) circulating flue gas is used, efficiency of combustion, the generation for inhibiting nitrogen oxides not only can be improved, moreover it is possible to save fuel use
Amount reduces the harmful substance in discharge and control tail gas, facilitates environmental protection.
To sum up, above-mentioned low nitrogen gas burner passes through the combustion gas inner tube being arranged circumferentially, combustion gas outer tube cooperates circulating flue gas,
Combustion air stablizes burning non-interferencely around altar lamp, since in contrast heat dissipation area is big, temperature is low for combustion flame, suppression
Thermal NO generation is made, to reach the purpose of low nitrogen, energy-saving combustion, and the setting of multiple opposition fuel gas pipelines makes
Burner have it is big adjust ratio, in addition, the structure of two distribution plenums can by adjust air quantity ratio control flame intensity and
Flame rigidity further improves low nitrogen burning effect, has that high combustion efficiency, discharged nitrous oxides are low, energy conservation and environmental protection, adjusting
Than big advantage.
Above embodiments only elaborate the basic principles and features of the present invention, and the utility model is not by above-mentioned example
Limitation, on the premise of not departing from the spirit and scope of the utility model, the present invention has various changes and changes, these changes
Change and change is fallen within the scope of the claimed invention.The utility model requires protection scope is wanted by appended right
Ask book and its equivalent thereof.
Claims (10)
1. a kind of low nitrogen gas burner, which is characterized in that including burner body, the burner body includes coaxial arrangement
Inner cylinder (1) and outer cylinder (2), the same end of the inner cylinder (1) and the outer cylinder (2), which is open, to be formed port (3), it is described in
Region in cylinder (1) is inner combustion chamber, and the region between the outer cylinder (2) and the inner cylinder (1) is exterior combustion chamber, the internal combustion
It burns in room and is provided with altar lamp (4), the altar lamp (4) extends at the port (3), with described in the inner combustion chamber
Several combustion gas inner tubes (5) are evenly distributed in centered on altar lamp (4), in the exterior combustion chamber centered on the altar lamp (4)
Several combustion gas outer tubes (6) are evenly distributed in, several described combustion gas inner tubes (5), combustion gas outer tube (6) extend to the port
(3) at and end is provided with gas spray head (7), is provided with smoke inlet (8) on the inner cylinder (1), is passed through in the smoke inlet (8)
Circulating flue gas is provided with air inlet (10) on the outer cylinder (2), is passed through combustion air in the air inlet (10), in the combustion gas
Pipe (5), combustion gas outer tube are passed through main combustion gas in (6).
2. low nitrogen gas burner according to claim 1, it is characterised in that: from the air inlet in the exterior combustion chamber
(10) it is provided with partition (11) to the port (3), formation the first distribution plenum (12) and the second distribution plenum (13), described first
Distribution plenum (12) is located in second distribution plenum (13), and the combustion gas outer tube (6) is set in first distribution plenum (12),
Gas spray head (7) punishment of the combustion gas inner tube (5), combustion gas outer tube (6) is corresponded in the inner combustion chamber, the first distribution plenum (12)
It is not provided with steady combustion cover (14).
3. low nitrogen gas burner according to claim 2, it is characterised in that: port (3) end of the outer cylinder (2) is set
It is equipped with intilted slanting baffle (15), the wind in second distribution plenum (13) is poly- to center by the slanting baffle (15)
Hold together.
4. low nitrogen gas burner according to claim 2, it is characterised in that: the eddy flow direction phase of two steady combustion covers (14)
Instead.
5. low nitrogen gas burner according to claim 2, it is characterised in that: correspond to described at the air inlet (10)
One distribution plenum (12), the second distribution plenum (13) are respectively arranged with the first damper (16) and the second damper (17), and two
The shaft of damper is articulated on the tube wall of the air inlet (10), and the air distribution tune for driving the shaft is provided with outside tube wall
Pole (18).
6. low nitrogen gas burner according to claim 1, it is characterised in that: be provided with third at the smoke inlet (8)
Damper (9), for controlling smoke.
7. low nitrogen gas burner according to claim 1, it is characterised in that: the burner body further includes combustion gas ring
Room (19), the combustion gas ring casing (19) are set to the outer cylinder (2) periphery, are provided with fuel gas inlet on the combustion gas ring casing (19)
(20) and several combustion gas branch pipes (21) main combustion gas, each combustion gas branch pipe (21) and institute, are passed through in the fuel gas inlet (20)
State combustion gas inner tube (5), combustion gas outer tube (6) connects one to one, and be provided on each combustion gas branch pipe (21) adjust hand valve (22).
8. low nitrogen gas burner according to claim 1, it is characterised in that: on the inner wall or outer wall of the inner cylinder (1)
Corresponding each combustion gas inner tube (5), combustion gas outer tube (6) and altar lamp (4) are provided with several fixed brackets (23).
9. low nitrogen gas burner according to claim 1, it is characterised in that: the non-burning mouth (3) of the inner cylinder (1) is held
It is provided with installation backboard, the altar lamp (4) is fixed on the installation backboard, and is connect with igniter.
10. low nitrogen gas burner according to claim 9, it is characterised in that: to inner combustion chamber on the installation backboard
In be provided with fire monitor equipment (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821494595.0U CN208859595U (en) | 2018-09-12 | 2018-09-12 | A kind of low nitrogen gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821494595.0U CN208859595U (en) | 2018-09-12 | 2018-09-12 | A kind of low nitrogen gas burner |
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| Publication Number | Publication Date |
|---|---|
| CN208859595U true CN208859595U (en) | 2019-05-14 |
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ID=66417812
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821494595.0U Active CN208859595U (en) | 2018-09-12 | 2018-09-12 | A kind of low nitrogen gas burner |
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| CN (1) | CN208859595U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916865A (en) * | 2018-09-12 | 2018-11-30 | 南京博纳能源环保科技有限公司 | A kind of low nitrogen gas burner |
| CN111780096A (en) * | 2020-07-21 | 2020-10-16 | 湖北鼎博丰新能源发展有限公司 | Low-nitrogen combustion system of natural gas boiler |
-
2018
- 2018-09-12 CN CN201821494595.0U patent/CN208859595U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916865A (en) * | 2018-09-12 | 2018-11-30 | 南京博纳能源环保科技有限公司 | A kind of low nitrogen gas burner |
| CN111780096A (en) * | 2020-07-21 | 2020-10-16 | 湖北鼎博丰新能源发展有限公司 | Low-nitrogen combustion system of natural gas boiler |
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