CN208349290U - Multisection type all-premixing burner with smoke reflux device - Google Patents
Multisection type all-premixing burner with smoke reflux device Download PDFInfo
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- CN208349290U CN208349290U CN201820426642.1U CN201820426642U CN208349290U CN 208349290 U CN208349290 U CN 208349290U CN 201820426642 U CN201820426642 U CN 201820426642U CN 208349290 U CN208349290 U CN 208349290U
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- Prior art keywords
- combustion
- combustion head
- burner
- smoke
- multisection type
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Abstract
The utility model discloses a kind of multisection type all-premixing burner with smoke reflux device, including blower, burner body, it further include smoke reflux device, blower uses frequency conversion fan, burner body includes fuel gas conduit, premix chamber, ignition system, attachment device between combustion head and combustion head, combustion head further includes multi-section-combustion head, attachment device is set between multisection type combustion head, swirl vane is equipped in premix chamber, swirl vane is connected gaseous mixture by welding manner by swirl vane eddy flow with premix chamber combustion barrel inner wall, increase gaseous mixture and is pre-mixed effect, smoke backflow pipe first passes through smoke filter after drawing and filters out the particles such as flue dust, high-temperature flue gas is depressurized by pressure reducing valve again, it is mixed again with the combustion gas in burner fuel gas conduit after decompression, multisection type all-premixing burner of the utility model with smoke reflux device The flue gas of high temperature reflux is made full use of, improves efficiency of combustion, and reduce the discharge of nitrogen oxides.
Description
Technical field
The utility model relates to a kind of combustion apparatus more particularly to a kind of multisection type with smoke reflux device to premix combustion entirely
Burner.
Background technique
Premixed combustion is that the gaseous mixture that fuel and oxygen or air are pre-mixed as uniform gaseous mixture, after premixing exists
The process caught fire in burner, burnt.
A kind of all-premixing burner, including burner housing and burning are disclosed in 203147762 U of Chinese patent CN
The fire output hole plate that device shell is fixedly connected, burner housing are made of fixed plate, bracket and distribution plate, fixed plate, bracket, distribution
Plate surrounds mixing chamber, and distribution plate is equipped with the dispensing orifice passed through for mixed gas, and fire output hole plate is arranged in burner housing air-flow
The downstream side in direction, but such all-premixing burner is primarily adapted for use in the small gas such as wall-hung boiler tool field.
Summary of the invention
The utility model is to mention with the multisection type all-premixing burner technical problem to be solved of smoke reflux device
For a kind of burning, the low all-premixing burner of abundant, high combustion efficiency, nitrogen oxide emission, is used for boiler heating, supplying hot water
Or as the combustion apparatus in large scale industry boiler.
In order to solve the above technical problems, the utility model uses the following technical solution: with the more of smoke reflux device
Segmentation all-premixing burner, including blower, burner body, further include smoke reflux device.
The blower uses frequency conversion fan, changes the revolving speed of blower by variable frequency regulating speed control, thus change fan delivery,
The stepless speed regulation of blower may be implemented in frequency conversion fan, compared with traditional wind deflector or valve shut off regulative mode, frequency conversion
Fan operation economy has apparent power savings.
Wherein, blower is connect by blower flange with burner body.
The burner body includes attachment device between fuel gas conduit, premix chamber, ignition system, combustion head and combustion head.
Wherein, fuel gas conduit connects with the combustion barrel of blower right end, and combustion gas valve group is additionally provided in fuel gas conduit, and combustion gas passes through combustion gas
Enter combustion head front end gas cylinder after valve group filtering decompression.
It wherein, is premix chamber in gas cylinder.
Wherein, the combustion gas that the air and fuel gas conduit that blower enters enter enters combustion barrel mixing, is pre-mixed in premix chamber
Enter combustion head afterwards to burn.
Wherein, ignition system includes ignitron, ignition electrode and flame detector, and ignition system is located at combustion barrel peripheral side,
One end is stretched outside on the outside of burner flange and connects with electrical system, and the other end stretches to combustion head front end, flame detector probe with
Combustion head metal web felt mutually close to.
Particularly, swirl vane is equipped in premix chamber, gaseous mixture increases gaseous mixture premixing effect by swirl vane eddy flow
Fruit.
A further technical solution lies in: combustion head includes punched-plate, metal web felt, and combustion head passes through burner method
Orchid connect with the gas cylinder at premix chamber end, and combustion head is divided into one section of combustion head and two sections of combustion heads again, is also possible to multi-section-combustion
Head, combustion head front end are connect by stainless steel ring with combustion barrel, and the other end is blocked with plug, with stainless steel ring welded seal.
Wherein, metallic fiber is that the special fibre with space network is made up of weaving manner for siderochrome manganese alloy
Dimension, with pitch-row is minimum, the aperture as fabric, permeability is good, resistance to oxidation, corrosion-resistant, not only with the durability of metal, but also tool
There is the flexibility of fiber, is capable of processing into various shape；It is stainless using stainless steel punched-plate as the cylindrical structure of lining material
The lining of steel punched-plate not only ensure that passing through for combustion gas, but also provide support for soft metal fiber felt, have burner
Certain mechanical strength.For burner in addition to combustion head metallic fiber part, rest part component is all made of stainless steel material production
It forms, it is whole that there is good mechanical strength, heat resistance and corrosion resistance.
Particularly, attachment device is set between multisection type combustion head.
Wherein, combustion head attachment device, combustion head are equipped among one section of combustion head end and two sections of combustion head front end plugs
Attachment device includes waffle slab, reinforcing rib and stable connection part.
Wherein, one waffle slab, waffle slab outer diameter and combustion are respectively set in one section of combustion head end and two sections of combustion head front ends
Burning head outer diameter is identical, and outer Monday lap welding connects stainless steel at one section of combustion head end and two sections of two combustion head docking of combustion head front end
Reinforcing rib at two is respectively arranged in ring, stainless steel ring upper and lower side, and reinforcing rib connects combustion head stainless steel ring and stable connection part, and connection is steady
Firmware is the stainless steel plate of welding, makes to connect held stationary between one section of combustion head and two sections of combustion heads.
A further technical solution lies in: the smoke reflux device includes smoke backflow pipe, smoke filter, pressure reducing valve
And air-introduced machine.Smoke backflow pipe is drawn from Boiler smoke tube, is connected to the fuel gas conduit of burner front end.
Wherein, smoke backflow pipe first passes through smoke filter and filters out the particles such as flue dust after drawing, then passes through pressure reducing valve pair
High-temperature flue gas is depressurized, and is mixed again with the combustion gas in burner fuel gas conduit after decompression.
Particularly, flue gas enters and also increases air-introduced machine before burner fuel gas conduit after decompression, and air-introduced machine passes through frequency control
Control flue gas enters the exhaust gas volumn of burner.
Multisection type all-premixing burner of the utility model with smoke reflux device can be widely used in very much boiler and adopt
It is warm, it also can satisfy the requirement of various large scale industry boiler combustion equipments.
The utility model has the beneficial effects that: (1) burner is full premix combustion, flame is uniformly blue in burning head surface
Flame burning, flameholding, sufficiently；(2) burner combustion head shape is adaptable, especially suitable for the transformation of coal-fired old boiler and greatly
In type Industrial Boiler；(3) all-premixing burner surface calorific intensity is high, and sound construction, the connection of multi-section-combustion head are easily changed；(4)
According to use occasion and the requirement of required burning load, combustion head number of segment can be also adjusted flexibly；(5) in use, quickly heating, being fast
But, combustion conditions are good for quickly cooling, are not easy to be tempered, and CO, NOx ratio often use burner much lower in flue gas, and pollution is small, are conducive to improve big
Makings amount.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is the utility model burner body schematic diagram.
Fig. 3 is the utility model premix chamber structural schematic diagram.
Fig. 4 is the utility model premix chamber swirl vane schematic diagram.
Fig. 5 waffle slab and stainless steel ring schematic diagram between the utility model two stage combustion head.
Fig. 6 attachment device schematic diagram between the utility model two stage combustion head.
Wherein, in the accompanying drawings: 11- blower, 12- blower flange, 13- burner flange, 14- premix chamber, 15- eddy flow leaf
Piece, 21- fuel gas conduit, 22- combustion gas pipe flange, 30- smoke pipe, 31- smoke filter, 32- pressure reducing valve, 33- smoke backflow pipe, 34-
Air-introduced machine, 50- burner hearth, 101- ignitron, 102- flame detector, 103- ignition electrode, mono- section of combustion head of 201-, bis- sections of 202- combustions
Burn head, 203- punched-plate, metal web felt, 301- attachment device, 302- stainless steel ring, 303- plug, stainless steel ring, 304-
Waffle slab, 305- reinforcing rib, 306- stable connection part.
Specific embodiment
It is detailed that the technical solution further progress in embodiment is made to the utility model below in conjunction with drawings and the specific embodiments
Thin description.Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments,
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, fall within the protection scope of the utility model.
Referring to Figures 1 and 2, FIG. 1 is a schematic structural view of the utility model, and Fig. 2 is the signal of the utility model burner body
Figure.Multisection type all-premixing burner with smoke reflux device, including blower 11, burner body further include smoke backflow dress
It sets, blower 11 uses frequency conversion fan, change the revolving speed of blower by variable frequency regulating speed control, thus change fan delivery, blower 11
It is connect by blower flange 12 with burner body；Burner body includes fuel gas conduit 21,14 ignition system of premix chamber, combustion head
And attachment device 301 between combustion head, it is premix chamber 14 in gas cylinder, combustion head includes punched-plate, metal web felt 203,
Stainless steel punched-plate is as liner, and metal web felt is wrapped in punched-plate outer layer, and combustion head is by burner flange 13 and in advance
The gas cylinder connection at mixed 14 end of chamber；Fuel gas conduit 21 connects with the combustion barrel of 11 right end of blower, is additionally provided with gas valve in fuel gas conduit 21
Group, combustion gas is by entering combustion head front end gas cylinder after the filtering decompression of combustion gas valve group, the air and fuel gas conduit 21 that blower 11 enters
The combustion gas of entrance enters combustion barrel mixing, enters combustion head surface after being pre-mixed in premix chamber 14 and burns.Referring to Fig. 2, igniting
System includes ignitron 101, ignition electrode 103 and flame detector 102, and ignition system is located at combustion barrel peripheral side, and one end is stretched outside
13 outside of burner flange simultaneously connects with electrical system, and the other end stretches to combustion head front end, the probe of flame detector 102 and burning
203 phase of head metal web felt close to.In the present embodiment, combustion head is divided into one section of combustion head 201 and two sections of combustion heads 202,
It can be multi-section-combustion head, combustion head front end is connected by stainless steel ring 302 with combustion barrel, and the other end is blocked with plug, with not
Become rusty 303 welded seal of steel loop, particularly, attachment device 301 is arranged between multisection type combustion head.
With continued reference to Fig. 1, smoke reflux device includes smoke backflow pipe 33, smoke filter 31, pressure reducing valve 32 and air inducing
Machine 34.Smoke backflow pipe 33 is drawn from Boiler smoke tube 30, is connected to the fuel gas conduit 21 of burner front end.Smoke backflow pipe 33 draws
Smoke filter 31 is first passed through after out and filters out the particles such as flue dust, then high-temperature flue gas is depressurized by pressure reducing valve 32, is depressurized
It is mixed again with the combustion gas in burner fuel gas conduit 21 afterwards.Particularly, flue gas enters before burner fuel gas conduit 21 also after decompression
Increase air-introduced machine 34, air-introduced machine 34 enters the exhaust gas volumn of burner by variable frequency regulating speed control flue gas, by high-temperature flue gas
It utilizes, increases efficiency of combustion, and reduce the discharge of pollutant.
It is the utility model premix chamber structural schematic diagram referring to Fig. 3, Fig. 3, is set in premix chamber 14 there are two swirl vane 15,
Gaseous mixture increases gaseous mixture and is pre-mixed effect, keep mixture combustion more abundant by 15 eddy flow of swirl vane.
It is the utility model premix chamber swirl vane schematic diagram referring to Fig. 4, Fig. 4, swirl vane 15 is stainless steel plate production,
Centre is hollow tubular fixing axle, and swirl vane 15 is connected by welding manner with combustion barrel inner wall in premix chamber 14.
Referring to figure 5 and figure 6, Fig. 5 waffle slab and stainless steel ring schematic diagram, Fig. 6 between the utility model two stage combustion head
The attachment device schematic diagram between the utility model two stage combustion head.One section of 201 end of combustion head and two sections of 202 front ends of combustion head
Combustion head attachment device 301 is equipped among plug, combustion head attachment device 301 includes waffle slab 304, reinforcing rib 305 and connection
Firmware 306.Wherein, one waffle slab 304, grid are respectively set in one section of 201 end of combustion head and two sections of 202 front ends of combustion head
304 outer diameter of plate is identical as combustion head outer diameter, at one section of 201 end of combustion head and two sections of 202 front end of combustion head, two combustion head docking
Outer Monday lap welding connects stainless steel ring 302, and reinforcing rib 305 at two are respectively arranged in stainless steel ring upper and lower side, and reinforcing rib 305 connects combustion head
Stainless steel ring 302 and stable connection part 306, stable connection part 306 are the stainless steel plate of welding, make one section of combustion head 201 and two
Held stationary is connected between section combustion head 202.
Using two stage combustion head as embodiment in the utility model drawings and the specific embodiments, it is also possible to different using other
Implement in other modes described herein, those skilled in the art can do without prejudice to the utility model connotation
It is similar to promote, therefore the utility model is not limited by particular embodiments disclosed above.
Claims (7)
1. the multisection type all-premixing burner with smoke reflux device, including blower, burner body further include smoke backflow dress
It sets, blower uses frequency conversion fan, and burner body includes connecting between fuel gas conduit, premix chamber, ignition system, combustion head and combustion head
Device, it is characterised in that: combustion head further includes multi-section-combustion head, and attachment device, attachment device are arranged between multisection type combustion head
Including waffle slab, reinforcing rib and stable connection part, one grid is respectively set in one section of combustion head end and two sections of combustion head front ends
Plate, waffle slab outer diameter is identical as combustion head outer diameter, at one section of combustion head end and two sections of two combustion head docking of combustion head front end outside
Monday lap welding connects stainless steel ring, and stainless steel ring upper and lower side is respectively arranged reinforcing rib at two, reinforcing rib connect combustion head stainless steel ring with
Stable connection part, stable connection part are the stainless steel plate of welding；Increased smoke reflux device includes smoke backflow pipe, flue gas mistake
Filter, pressure reducing valve and air-introduced machine, smoke backflow pipe are drawn from Boiler smoke tube, are connected to the fuel gas conduit of burner front end.
2. the multisection type all-premixing burner according to claim 1 with smoke reflux device, it is characterised in that: blower is logical
Blower flange is crossed to connect with burner body.
3. the multisection type all-premixing burner according to claim 1 with smoke reflux device, it is characterised in that: described pre-
It is equipped with swirl vane in mixed chamber, the swirl vane gaseous mixture that is connected by welding manner with premix chamber combustion barrel inner wall passes through eddy flow
Vane cyclone increases gaseous mixture and is pre-mixed effect.
4. the multisection type all-premixing burner according to claim 1 with smoke reflux device, it is characterised in that: the combustion
Burning head includes punched-plate, metal fiber felt, and combustion head is connect by burner flange with the gas cylinder at premix chamber end, combustion head point
For one section of combustion head and two sections of combustion heads, combustion head front end is connect by stainless steel ring with combustion barrel, and the other end is blocked with plug,
With stainless steel ring welded seal.
5. the multisection type all-premixing burner according to claim 1 with smoke reflux device, it is characterised in that: the point
Fiery system includes ignitron, ignition electrode and flame detector, and ignition system is located at combustion barrel peripheral side, and one end is stretched outside burner method
Blue outside simultaneously connects with electrical system, and the other end stretches to combustion head front end, flame detector probe and combustion head metal web
Felt mutually close to.
6. the multisection type all-premixing burner according to claim 1 with smoke reflux device, it is characterised in that: the cigarette
Gas return pipe first passes through smoke filter after drawing and filters out the particles such as flue dust, then is subtracted by pressure reducing valve to high-temperature flue gas
Pressure, mixes with the combustion gas in burner fuel gas conduit again after decompression.
7. the multisection type all-premixing burner with smoke reflux device described in any one of -6 claims according to claim 1,
It is characterized by: flue gas enters and also increases air-introduced machine before burner fuel gas conduit after decompression, air-introduced machine passes through variable frequency regulating speed control
Flue gas enters the exhaust gas volumn of burner.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720341007 | 2017-04-01 | ||
| CN2017203410079 | 2017-04-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208349290U true CN208349290U (en) | 2019-01-08 |
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ID=64885372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820426642.1U Expired - Fee Related CN208349290U (en) | 2017-04-01 | 2018-03-28 | Multisection type all-premixing burner with smoke reflux device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208349290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871121A (en) * | 2017-04-01 | 2017-06-20 | 上海钜荷热力技术有限公司 | Multisection type all-premixing burner with smoke reflux device |
-
2018
- 2018-03-28 CN CN201820426642.1U patent/CN208349290U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871121A (en) * | 2017-04-01 | 2017-06-20 | 上海钜荷热力技术有限公司 | Multisection type all-premixing burner with smoke reflux device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190108 Termination date: 20200328 |
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| CF01 | Termination of patent right due to non-payment of annual fee |