CN209130866U - A kind of low NOx gas combustion apparatus of film-type water-cooling - Google Patents
A kind of low NOx gas combustion apparatus of film-type water-cooling Download PDFInfo
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- CN209130866U CN209130866U CN201821621701.7U CN201821621701U CN209130866U CN 209130866 U CN209130866 U CN 209130866U CN 201821621701 U CN201821621701 U CN 201821621701U CN 209130866 U CN209130866 U CN 209130866U
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Abstract
The utility model provides a kind of low NO of film-type water-coolingxGas combustion apparatus, including cylindrical film-type water-cooling combustion head, circular ring shape water chamber, current equalizer, air-fuel mixing arrangement, igniting fire inspection integrating device, blower, air inlet muffler, burner connecting flange, intake-outlet and fuel gas inlet；The film-type water-cooling combustion head is fixedly connected with the circular ring shape water chamber, and the air-fuel mixing arrangement is fixed on the circular ring shape water chamber, and the blower is connect with the air-fuel mixing arrangement, and air inlet muffler is equipped on the blower.The low NO of the film-type water-cooling of the utility modelxGas combustion apparatus, can horizontal, vertical or inclination installation, easy to disassemble and replacement can be adapted for existing any type of gas fired-boiler.The utility model structure is simple, easy to process, can be effectively reduced flue-gas temperature, forms inside smoke recycling, increases burner hearth effective radiating area, combustion flame sharp side temperature is reduced, to reduce NOxGeneration.
Description
Technical field
The utility model belongs to the low NO of combustion gasxA kind of field of combustion technology, and in particular to the low NO of film-type water-coolingxFuel gas buring
Device.
Background technique
In recent years, the attention with country to environmental issue, to the NO of gas fired-boilerxEmission request is more and more severeer, row
Standard is put from the 400mg/m required originally3To 150mg/m3, then arrive 80mg/m3Or even urban and area are directly by standard
It is limited to no more than 30mg/m3World-class standard, the variation of entire standard only used the time of 2-3；Moreover, national ring
Also fermenting and studying 5mg/m in guarantor portion3Discharge index, this just illustrates country's an urgent demand low-nitrogen discharged to gas fired-boiler,
This is but also low NOxCombustion technology is widely used.
Currently, the external low NO for having used various newxBurner, NOxInhibiting mechanism is nothing more than the mixed splitting or integrating of promotion
Cut flame, flue gas recirculation, stage burning, bias combustion and its their combination form.According to victory reason multidimensional surprise mechanism and Ah
Lun Niwusi law has a small amount of NO when ignition temperature is more than 1200 DEG CxIt generates；When ignition temperature is more than 1500 DEG C, temperature
Every 100 DEG C of raising is spent, reaction rate improves 6-7 times, NOxProduction quantity is also significantly increased.So for fuel gas buring, if
Combustion flame sharp side temperature can be greatly reduced, so that it may reduce NOxDischarge.In addition, generating NO according to Fei Nimo mechanismxSpeed
60ms is only needed, if burning velocity can be improved, can also inhibit Quick-type NOxGeneration.
Mainstream reaches 30mg/m currently on the market3There are mainly three types of combustion gas low-NO_x combustion technology routes below: first
Kind is low NOxDiffusion type burning+flue gas recirculating technique；Second is using full premix surface combustion technology；The third when adopt
With full premix water cooling combustion technology.In both technology paths, the first technology path use scope is wider, flameholding technology
Maturation, but there is also system complex, and energy consumption is higher, and 30mg/m3It is its emission limit, minimizes the defects of cost performance is not high.
Second of technology path is also widely used, but there is also many deficiencies: 1. more demanding to air purity；2. surface holds
Easily stifled ash is sintered, 3. the high Yi Huihuo of temperature；4. needing higher excess air factor to realize low NOx, energy consumption is high.The third skill
Art route solves the problems in second of technology path there are also application, but there is also some shortcomings: 1. burner combines
Boiler carries out integrated design, sells in the market without individual burner, can not carry out low NO to existing gas fired-boilerx
Transformation；2. combustion furnace mining vertical tubulation+water cooling hole, structure is complicated；3. using big planar configuration, flow field uniformity
Difference, Smaller load are easy tempering；4. single combustion head capacity is limited, enlarged design cannot achieve.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of film-type water-cooling low NOx
Gas combustion apparatus, shape is similar with conventional diffusion flame burner, can horizontal, vertical or inclination installation, it is easy to disassemble and more
It changes, can be adapted for existing any type of gas fired-boiler.
Technical solution:
A kind of low NO of film-type water-coolingxGas combustion apparatus, including cylindrical film-type water-cooling combustion head, circular ring shape water chamber,
Current equalizer, air-fuel mixing arrangement, igniting fire inspection integrating device, blower, air inlet muffler, burner connecting flange, disengaging
The mouth of a river and fuel gas inlet；The film-type water-cooling combustion head is fixedly connected with the circular ring shape water chamber, the air-fuel mixing arrangement
It is fixed on the circular ring shape water chamber, the blower is connect with the air-fuel mixing arrangement, and air inlet is equipped on the blower
Muffler；
The film-type water-cooling combustion head is formed with porous plate arranged for interval with many small by the water cooling tube of different size
The cylindrical structure of fire hole；
Intake-outlet is equipped on the circular ring shape water chamber, the intake-outlet is connected to the water cooling tube, in the circle
It is fixed with connecting flange on the outside of annular water chamber, igniting fire inspection integrating device is equipped on the connecting flange；
It is also fixedly connected with air-fuel mixing arrangement on the outside of the circular ring shape water chamber, is equipped on the air-fuel mixing arrangement
Fuel gas inlet；The air-fuel mixing arrangement is connected with blower, and the blower is mixed to the air-fuel by the air inlet muffler
It attaches together to set and is passed through air, air mixes in the air-fuel mixing arrangement with combustion gas, the film-type water-cooling combustion head and the sky
Fire mixing arrangement connection.
It is also built-in with narrow meshed demarcation plate in the circular ring shape water chamber, the circular ring shape water chamber is divided by the demarcation plate
Two halves tap into water outlet respectively.
Aperture is additionally provided on the demarcation plate.
Be fixed with current equalizer in the annulus of the circular ring shape water chamber, the current equalizer include fixed-wing spinning disk with
And the truncated cone-shaped diffuser towards the film-type water-cooling combustion head 1.
Pass through welded connecting between the water cooling tube and the porous plate.
Flame-observing hole is equipped on the connecting flange, for observing the combustion case in the boiler.
The air-fuel mixing arrangement uses the structure of front and back forward and reverse spinning disk and porous undergauge jet pipe.
The utility model has the advantages that
1, the low NO of the film-type water-cooling of the utility modelxGas combustion apparatus, can horizontal, vertical or inclination installation, be convenient for
Disassembly and replacement, can be adapted for existing any type of gas fired-boiler.
2, the utility model structure is simple, easy to process, can be effectively reduced flue-gas temperature, forms inside smoke and follows again
Ring increases burner hearth effective radiating area, combustion flame sharp side temperature is reduced, to reduce NOxGeneration.
3, the utility model is built in inside combustion head, using the dismountable current equalizer of integration to guarantee aperture stream
The stabilization of the uniform flame of speed, reduces or eliminates low frequency noise, expands burning load range, to reduce CO discharge, improves combustion
Burn efficiency.
Detailed description of the invention
Fig. 1 is the low NO of film-type water-cooling of the utility modelxGas combustion apparatus figure.
Fig. 2 is the film-type water-cooling combustion head structure chart of the utility model.Wherein, Fig. 2 a is the film-type water-cooling of the utility model
The side view of combustion head；Fig. 2 b is the sectional view of the film-type water-cooling combustion head of the utility model；Fig. 2 c is the film of the utility model
The Local map of formula water cooling combustion head.
Fig. 3 is the circular ring shape water chamber structure figure of the utility model.
Fig. 4 is the current equalizer structure chart of the utility model.
Label in figure is as follows: film-type water-cooling combustion head 1, circular ring shape water chamber 2, current equalizer 3, air-fuel mixing arrangement 4, point
Fiery inspection integrating device 5, flame-observing hole 6, blower 7, air inlet muffler 8, connecting flange 9, intake-outlet 10, fuel gas inlet 11,
Water cooling tube 12, porous plate 13, demarcation plate 14, fixed-wing spinning disk 15, truncated cone-shaped diffuser 16.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
Fig. 1 is the low NO of film-type water-cooling of the utility modelxGas combustion apparatus figure.As shown in Figure 1, the film of the utility model
The low NO of formula water coolingxGas combustion apparatus includes cylindrical film-type water-cooling combustion head 1, circular ring shape water chamber 2, current equalizer 3, air-fuel
Mixing arrangement 4, igniting fire inspection integrating device 5, flame-observing hole 6, blower 7, air inlet muffler 8, burner connecting flange 9, disengaging
The mouth of a river 10 and fuel gas inlet 11.The film-type water-cooling combustion head 1 is fixedly connected with the circular ring shape water chamber 2, and the air-fuel is mixed
It attaches together and sets 4 and be fixed on the circular ring shape water chamber 2, the blower 7 is connect with the air-fuel mixing arrangement 4, on the blower 7
Equipped with air inlet muffler 8.
Fig. 2 is the film-type water-cooling combustion head structure chart of the utility model.As depicted in figure 2, the film-type water-cooling combustion head
1 forms the fin panel casing with many fire holes by water cooling tube 12 and 13 arranged for interval of porous plate.The water cooling tube 12 is U-tube,
And there is different size；The film-type water-cooling combustion head 1 by different size the water cooling tube 12 and 13 arranged for interval of porous plate
The cylindrical structure with many small fire holes is formed, as shown in Fig. 2 b；As shown in Figure 2 c, the water cooling tube 12 and the porous plate
Pass through welded connecting between 13.A closed cylindrical side, cylinder end face can be formed using such film-type water-cooling structure
It using the tubulation and steel plate to come from circumferentially extending, interconnects, to form a totally enclosed cylindrical film-type water cooling combustion
Burn head.In the present invention, complete penetraction and fusion in welding connects between the water cooling tube 12 and the porous plate 13, it is ensured that the porous plate 13
It is sufficiently cooled, cooperates " the smallest flame propagation velocity " Lai Jinhang of different combustion gas to open aperture processed, it is quick-fried to have prevented tempering completely
The possibility of combustion.
Fig. 3 is the circular ring shape water chamber structure figure of the utility model.As shown in figure 3, being equipped on the circular ring shape water chamber 2
Intake-outlet 10, the intake-outlet 10 are connected to the water cooling tube 12, and the utility model is using the circular ring shape water chamber 2 come real
Existing Inlet and outlet water shunts and flame is cooling.Be fixed with connecting flange 9 on the outside of the circular ring shape water chamber 2, for from different boilers
Ontology connection.Flame-observing hole 6 is equipped on the connecting flange 9, for observing the combustion case in the boiler；In the connection
Igniting fire inspection integrating device 5 is additionally provided on flange 9.
Narrow meshed demarcation plate 14 is also built-in in the circular ring shape water chamber 2, and the demarcation plate 14 is by the circular ring shape water
Room 2 is split into two halves, and taps into water outlet 10 respectively；Forced water circulation is carried out using water pump, it is ensured that the water cooling tube 12 is by sufficiently cold
But, working medium is transferred heat to.Aperture is additionally provided on the demarcation plate 14, it is ensured that carbonated drink will not be gathered.
Current equalizer 3 is fixed in the annulus of the circular ring shape water chamber 2, Fig. 4 is the current equalizer knot of the utility model
Composition.As shown in figure 4, the current equalizer 3 includes fixed-wing spinning disk 15 and the circle towards the film-type water-cooling combustion head 1
Platform shape diffuser 16.Ensure aperture by reinforcing the tangential rotation speed of the fixed-wing spinning disk 15 and changing channel volume
Flow velocity is uniform, to guarantee the stabilization of combustion flame, reduces or eliminates low frequency noise, expands burning load range, reduces CO row
It puts, improves efficiency of combustion.
It is also fixedly connected with air-fuel mixing arrangement 4 in 2 outside of circular ring shape water chamber, on the air-fuel mixing arrangement 4
Equipped with fuel gas inlet 11, it is connected with blower 7 with the air-fuel mixing arrangement 4, the blower 7 passes through the air inlet muffler 8
It is passed through air to the air-fuel mixing arrangement 4, air mixes in the air-fuel mixing arrangement 4 with combustion gas, and the truncated cone-shaped is gradually
Expander 16 is connected to the air-fuel mixing arrangement 4.Air and the mixed gas of combustion gas are fired through small holes from cylindrical film-type water cooling
The inside for burning head 1 uniformly sprays outward, is ignited device and ignites, and forms many and leaves aperture spout certain distance, left floating
Blue flare, as shown in Figure 2.The length of flame and hoverheight change with the variation of aperture flow velocity.Due to flare from aperture with
Certain speed sprays, and aperture periphery is caused to form local depression, and according to injection principle, the high-temperature flue gas back volume on flare periphery is inhaled
To flare root, on the one hand this partial fume is water cooled that pipe is cooling, while mixing again with the mixed gas that aperture sprays laggard
Row burning, so that combustion flame temperature is lower than 1500 DEG C, so that it is guaranteed that NOxContent is greatly reduced.
Utility model device shape is similar with conventional diffusion flame burner, and the combustion head 1 uses cylindrical film-type water
Cold wall structure can directly be put in burner hearth, and burner is all made of connecting flange 9 with boiler body and connect, and may be implemented to burn
The replacement of device.
The above is only the preferred embodiment of the utility model, it should be pointed out that: for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (6)
1. a kind of low NO of film-type water-coolingxGas combustion apparatus, it is characterised in that: including cylindrical film-type water-cooling combustion head, annulus
Shape water chamber, current equalizer, air-fuel mixing arrangement, igniting fire inspection integrating device, blower, air inlet muffler, burner connection method
Blue, intake-outlet and fuel gas inlet；The film-type water-cooling combustion head is fixedly connected with the circular ring shape water chamber, and the air-fuel is mixed
It attaches together to set and be fixed on the circular ring shape water chamber, the blower is connect with the air-fuel mixing arrangement, is equipped on the blower
Air inlet muffler；
The film-type water-cooling combustion head forms the circle with many small fire holes by the water cooling tube and porous plate arranged for interval of different size
Column construction；
Intake-outlet is equipped on the circular ring shape water chamber, the intake-outlet is connected to the water cooling tube, in the circular ring shape
It is fixed with connecting flange on the outside of water chamber, igniting fire inspection integrating device is equipped on the connecting flange；
It is also fixedly connected with air-fuel mixing arrangement on the outside of the circular ring shape water chamber, combustion gas is equipped on the air-fuel mixing arrangement
Import；The air-fuel mixing arrangement is connected with blower, and the blower is mixed to the air-fuel by the air inlet muffler and filled
It sets and is passed through air, air mixes in the air-fuel mixing arrangement with combustion gas, and the film-type water-cooling combustion head and the air-fuel are mixed
It attaches together and sets connection.
2. the low NO of film-type water-cooling according to claim 1xGas combustion apparatus, it is characterised in that: in the circular ring shape water chamber
It is also built-in with narrow meshed demarcation plate, the circular ring shape water chamber is split into two halves by the demarcation plate, taps into water outlet respectively.
3. the low NO of film-type water-cooling according to claim 2xGas combustion apparatus, it is characterised in that: on the demarcation plate also
It is provided with aperture.
4. the low NO of film-type water-cooling according to claim 1xGas combustion apparatus, it is characterised in that: in the circular ring shape water chamber
Annulus in be fixed with current equalizer, the current equalizer includes fixed-wing spinning disk and towards the film-type water-cooling combustion head
(1) truncated cone-shaped diffuser.
5. the low NO of film-type water-cooling according to claim 1xGas combustion apparatus, it is characterised in that: the water cooling tube with it is described
Pass through welded connecting between porous plate.
6. the low NO of film-type water-cooling according to claim 1xGas combustion apparatus, it is characterised in that: on the connecting flange
Equipped with flame-observing hole, for observing the combustion case in boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821621701.7U CN209130866U (en) | 2018-09-30 | 2018-09-30 | A kind of low NOx gas combustion apparatus of film-type water-cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821621701.7U CN209130866U (en) | 2018-09-30 | 2018-09-30 | A kind of low NOx gas combustion apparatus of film-type water-cooling |
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| Publication Number | Publication Date |
|---|---|
| CN209130866U true CN209130866U (en) | 2019-07-19 |
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ID=67231027
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| CN201821621701.7U Active CN209130866U (en) | 2018-09-30 | 2018-09-30 | A kind of low NOx gas combustion apparatus of film-type water-cooling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442401A (en) * | 2018-09-30 | 2019-03-08 | 江苏双良锅炉有限公司 | A kind of low NO of film-type water-coolingxGas combustion apparatus |
| CN112682773A (en) * | 2021-01-30 | 2021-04-20 | 罗诺克兹（北京）能源设备技术有限公司 | Central backfire type low-nitrogen transformation scheme |
-
2018
- 2018-09-30 CN CN201821621701.7U patent/CN209130866U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442401A (en) * | 2018-09-30 | 2019-03-08 | 江苏双良锅炉有限公司 | A kind of low NO of film-type water-coolingxGas combustion apparatus |
| CN112682773A (en) * | 2021-01-30 | 2021-04-20 | 罗诺克兹（北京）能源设备技术有限公司 | Central backfire type low-nitrogen transformation scheme |
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