CN106907706A - A kind of igniter and burner - Google Patents
A kind of igniter and burner Download PDFInfo
- Publication number
- CN106907706A CN106907706A CN201710260715.4A CN201710260715A CN106907706A CN 106907706 A CN106907706 A CN 106907706A CN 201710260715 A CN201710260715 A CN 201710260715A CN 106907706 A CN106907706 A CN 106907706A
- Authority
- CN
- China
- Prior art keywords
- enlarging
- ring
- incendiary source
- type
- necking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002817 coal dust Substances 0.000 claims abstract description 48
- 238000002485 combustion reaction Methods 0.000 claims description 22
- 239000003245 coal Substances 0.000 abstract description 23
- 239000000843 powder Substances 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010304 firing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The present invention relates to burner igniting device technical field, more particularly to a kind of igniter and burner.The igniter, incendiary source outer layer is the incendiary source shell or sheath of column, and necking component and enlarging component are sequentially provided with along coal dust flow direction on incendiary source shell or sheath, and gap is provided between necking component and enlarging component；Necking component includes ring-type necking；Enlarging component includes ring-type enlarging.A kind of igniter that the present invention is provided, can both improve the concentration of coal dust at incendiary source, while, reduction of speed can be carried out to coal dust, make coal powder density and flow velocity at incendiary source beneficial to ignition operation, incendiary source can be lighted more effectively by the breeze airflow after poly- powder reduction of speed, improve ignition results.
Description
Technical field
The present invention relates to burner igniting device technical field, more particularly to a kind of igniter and burner.
Background technology
The start and stop of traditional coal-fired boiler in thermal power plant and low-load combustion-stabilizing are all to use combusting heavy oil, the method for diesel oil,
Substantial amounts of fuel oil is consumed every year, has a strong impact on Business Economic Benefit.In order to avoid disadvantages mentioned above, at present, plasma ignition is commonly used
The original firing technique of technical substitution, plasma-ignition technique can directly light the coal dust in internal combustion chamber coal burner, section
About great amount of fuel oil, generally, plasma ignition burner is generally multistage barrel structure.
The B of Chinese patent CN 101846315 disclose a kind of Pulverized Coal Concentration device (Fig. 1) and comprising the Pulverized Coal Concentration device
Coal burner (Fig. 2).Fig. 1 Pulverized Coal Concentrations device includes cylindric back segment 101 and the bowl-shape leading portion being made up of curved surface
102, back segment and leading portion can be fixed together, also can be spaced apart separated.Wind powder stream enters bowl-shape from the rim of a bowl 109
In leading portion 102, by bowl structure water conservancy diversion and inspissation, wind powder air-flow is concentrated to the concentration level for being adapted to igniting, in quilt
After lighting, from bowl base opening 103 into back segment 101 in continue to be directed, last scorching hot flame is fast in enrichment facility exit
The coal dust that speed extension surely fires cylinder with the first order carries out strong friendship and mixes, and promotes the coal-coal heat transfer of flame, is easier to form coal
The igniting transmittance process of flame, produces relatively reliable amplification burning things which may cause a fire disaster step by step.Fig. 2 includes that the coal dust of Pulverized Coal Concentration device of the present invention fires
Burner surely fires cylinder 201 and 202 including two-stage, and Pulverized Coal Concentration device is arranged on plasma generator 301 and surely fires cylinder 201 with the first order
Between.Plasma generator 301 is stretched into the bowl structure of the leading portion 102 of Pulverized Coal Concentration device and Pulverized Coal Concentration device goes out
Mouthful, the outlet of the tubular structure of i.e. described back segment 101 extend into during the first order surely fires cylinder 201.The plasma generator and institute
It is 10mm to 100mm to state the bowl base opening of leading portion, the distance of the entrance of i.e. described back segment.
Prior art shortcoming：Coal dust amount at the incendiary source of plasma generator is big, and coal dust flowing velocity is fast, and wait from
The arc ignition finite energy of daughter generator, it is impossible to all coal dusts near effective firing point burning things which may cause a fire disaster, can so as to cause to catch fire
It is poor by property, influence ignition results.
The content of the invention
It is an object of the invention to propose a kind of igniter and burner, to solve coal dust amount present in prior art
Big and flow velocity is fast, and incendiary source cannot light all coal dusts, the technical problem of poor reliability of catching fire.
It is that, up to this purpose, the present invention uses following technical scheme：
A kind of igniter, including burner cylinder, the burner cylinder are provided with breeze airflow entrance, the burning
Incendiary source is provided with device cylinder；
The incendiary source outer layer is the incendiary source shell or sheath of column, along pulverized coal flow on the incendiary source shell or sheath
Dynamic direction is sequentially provided with necking component and enlarging component, and gap is provided between the necking component and the enlarging component；
The necking component includes the ring-type necking being sheathed on the incendiary source shell or sheath, the ring-type necking
External diameter is gradually reduced along the coal dust flow direction；
The enlarging component includes ring-type enlarging, and the internal diameter of the ring-type enlarging gradually increases along the coal dust flow direction
Greatly, the internal diameter of the ring-type enlarging is more than the incendiary source shell or the external diameter of sheath.
Further, steady combustion cylinder, the incendiary source, the necking component and the expansion are also included in the burner tube body
Mouth component is in the steady combustion cylinder.
Further, the enlarging angle of the ring-type enlarging is α, wherein, 180 ° of 0 °≤α ＜.
Further, the axial distance between the front end of the ring-type enlarging and the end of the incendiary source be -200mm~
+100mm。
Further, the gap is axial distance of the ring-type necking end to the ring-type enlarging front end, described
Gap is 20-300mm.
Further, the steady combustion cylinder includes multiple steady combustion cylinders for multistage steady combustion cylinder, multiple steady combustion cylinders head and the tail successively
Socket or interval setting.
Further, the incendiary source is at least produced by the one kind in plasma generator, tiny-oil ignition rifle, gas burning torch
It is raw.
The present invention also provides a kind of burner, including above-mentioned igniter.
A kind of igniter that the present invention is provided, when using, along coal dust flow direction, breeze airflow passes through ring-type necking,
Coal dust produces disturbance to form coal dust flow-disturbing, and coal dust can improve the concentration of coal dust to collecting at incendiary source, part wind in coal dust flow-disturbing
Spread to around in gap location, and coal dust, due to its inertia, most of coal dust can be pooled in ring-type enlarging, in ring-type enlarging
Its internal diameter gradually increases, and the speed of breeze airflow is gradually reduced, and finally, the concentration that one coal dust is formed at incendiary source is higher,
And the slower breeze airflow of flow velocity.
The igniter, can both improve the concentration of coal dust at incendiary source, meanwhile, reduction of speed can be carried out to coal dust, make igniting
Coal powder density and flow velocity at source are beneficial to ignition operation, and incendiary source can be lighted more effectively by the coal dust gas after poly- powder reduction of speed
Stream, improves ignition results.
A kind of burner that the present invention is provided, by using above-mentioned igniter, can improve ignition results, catch fire reliable steady
It is fixed.
Brief description of the drawings
Fig. 1 is the sectional view of Pulverized Coal Concentration device in the prior art；
Fig. 2 is the sectional view of the coal burner in the prior art comprising the Pulverized Coal Concentration device；
Fig. 3 is the sectional view of the igniter that the present invention is provided；
Fig. 4 is the sectional view when flaring angle of igniter that the present invention is provided is 0 degree；
Fig. 5 is the sectional view set when surely firing cylinder of the igniter that the present invention is provided；
Fig. 6 is the sectional view of the ring-type enlarging of the igniter that the present invention is provided.
In figure：
1st, incendiary source shell or sheath；2nd, incendiary source；3rd, ring-type necking；4th, ring-type enlarging；5th, cylinder；6th, plasma hair
Raw device；7th, cylinder is surely fired.
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.
As seen in figures 3-6, a kind of igniter, including burner cylinder 5, burner cylinder 5 is provided with breeze airflow and enters
Mouthful, it is provided with incendiary source 2 in burner cylinder 5；
The bag outer layer of incendiary source 2 is the incendiary source shell or sheath 1 of column, is flowed along coal dust on incendiary source shell or sheath 1
Direction is sequentially provided with necking component and enlarging component, and gap is provided between necking component and enlarging component；
Necking component includes the ring-type necking 3 being sheathed on incendiary source shell or sheath 1, and the external diameter of ring-type necking 3 is along coal
Powder flow direction is gradually reduced；
Enlarging component includes ring-type enlarging 4, and the internal diameter of ring-type enlarging 4 gradually increases along coal dust flow direction, ring-type enlarging 4
External diameter of the internal diameter more than incendiary source shell or sheath 1.
Flow velocity direction when the igniter is used along coal dust is set, and incendiary source 2 is at least by plasma generator, micro- oil
A kind of generation in burning torch, gas burning torch, coal dust is by the way that after necking component, the coal powder density at incendiary source 2 is improved, and is reached and is expanded
When at mouth component, it is possible to decrease the flow velocity of coal dust, and then incendiary source 2 can be made effectively to light the coal dust of high concentration low speed, can
Improve ignition results.
Also include steady combustion cylinder 7 in burner cylinder 5, incendiary source 2, necking component and enlarging component are in steady combustion cylinder 7.
In order to reach more excellent combustion efficiency, outside in incendiary source 2 sets steady combustion cylinder 7, and after the completion of igniting, flame can be in steady combustion cylinder
Fully burnt in 7, flame is reached stable state, effect of catching fire is more preferable.
Wherein, surely firing cylinder 7 according to ature of coal and operating mode can include multiple steady combustion cylinders 7, multiple steady combustion cylinders 7 for multistage steady combustion cylinder
Head and the tail are socketed or interval setting successively.
Preferably, the enlarging angle of ring-type enlarging 4 is α, as shown in fig. 6, wherein, 180 ° of 0 °≤α ＜.Wherein, ring-type expands
Mouthfuls 4 inwall is skewed, and, in 90 ° of 0≤β ＜, enlarging angle can make the edge of ring-type enlarging 4 for angle between inclined wall and horizontal plane
Coal dust flow direction inner space is in the trend for gradually expanding, and corresponding space becomes the big speed for causing coal dust to reduce.
Preferably, the axial distance between the end of the front end of ring-type enlarging 4 and incendiary source 2 is -200mm~+100mm.
Ring-type enlarging 4 set when, be set on incendiary source shell or sheath 1, now, at the minimum diameter of ring-type enlarging 4 not with igniting
The outer wall of source shell or sheath 1 is in contact, i.e. the minimum diameter of ring-type enlarging 4 also greater than incendiary source shell or the external diameter of sheath 1,
Ensuring the coal dust of flowing can smoothly be flowed into ring-type enlarging 4.
Gap is the axial distance of the end of ring-type necking 3 to the front end of ring-type enlarging 4, and gap is 20-300mm.Necking component
Gap is must be provided with and enlarging component between, the width in the gap can be set according to ature of coal, it is preferred that gap is 20-
300mm。
The present invention also provides a kind of burner, including above-mentioned igniter.
When specifically used, burner cylinder 5, plasma generator 6 and steady combustion cylinder 7 are coaxial, coal dust edge in cylinder 5
It axially flows, and during coal dust flowing, first passes through ring-type necking 3, and coal dust produces disturbance to form coal dust and disturbs at ring-type necking 3
Stream, coal dust improves the concentration of coal dust at incendiary source 2 to collecting at incendiary source 2, and coal dust and coal dust flow-disturbing continue to flow,
Gap location between ring-type necking 3 and ring-type enlarging 4, the part wind direction surrounding diffusion in air-flow, coal dust in the presence of inertia,
It is pooled in ring-type enlarging 4 with flow-disturbing, its internal diameter gradually increases in ring-type enlarging 4, and the speed of corresponding coal dust is gradually reduced.This
When, high concentration is formd at incendiary source 2, the coal dust of low flow velocity, incendiary source 2 can be lighted sufficiently coal dust, and ignition results are more excellent.
Know-why of the invention is described above in association with specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and can not by any way be construed to limiting the scope of the invention.Based on explanation herein, the technology of this area
Personnel associate other specific embodiments of the invention by would not require any inventive effort, these modes fall within
Within protection scope of the present invention.
Claims (8)
1. a kind of igniter, it is characterised in that including burner cylinder (5), the burner cylinder (5) is provided with coal dust gas
Incendiary source (2) is provided with inflow entrance, the burner cylinder (5)；
Incendiary source (2) outer layer is the incendiary source shell or sheath (1) of column, edge on the incendiary source shell or sheath (1)
Coal dust flow direction is sequentially provided with necking component and enlarging component, between being provided between the necking component and the enlarging component
Gap；
The necking component includes the ring-type necking (3) being sheathed on the incendiary source shell or sheath, the ring-type necking (3)
External diameter be gradually reduced along the coal dust flow direction；
The enlarging component includes ring-type enlarging (4), and the internal diameter of the ring-type enlarging (4) gradually increases along the coal dust flow direction
Greatly, the internal diameter of the ring-type enlarging (4) is more than the incendiary source shell or the external diameter of sheath (1).
2. igniter according to claim 1, it is characterised in that also include steady combustion cylinder in the burner cylinder (5)
(7), the incendiary source (2), the necking component and the enlarging component are in steady combustion cylinder (7).
3. igniter according to claim 1, it is characterised in that the enlarging angle of the ring-type enlarging (4) is α, its
In, 180 ° of 0 °≤α ＜.
4. igniter according to claim 1, it is characterised in that the front end of the ring-type enlarging (4) and the igniting
Axial distance between the end in source (2) is -200mm~+100mm.
5. igniter according to claim 1, it is characterised in that the gap be ring-type necking (3) end extremely
The axial distance of ring-type enlarging (4) front end, the gap is 20-300mm.
6. igniter according to claim 2, it is characterised in that it is many that steady combustion cylinder (7) is that multistage steady combustion cylinder includes
Individual steady combustion cylinder (7), head and the tail are socketed or interval setting multiple steady combustions cylinder (7) successively.
7. igniter according to claim 1, it is characterised in that the incendiary source (2) is at least occurred by plasma
A kind of generation in device, tiny-oil ignition rifle, gas burning torch.
8. a kind of burner, it is characterised in that including the igniter described in claim any one of 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260715.4A CN106907706B (en) | 2017-04-20 | 2017-04-20 | Ignition device and combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260715.4A CN106907706B (en) | 2017-04-20 | 2017-04-20 | Ignition device and combustor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106907706A true CN106907706A (en) | 2017-06-30 |
| CN106907706B CN106907706B (en) | 2023-12-08 |
Family
ID=59211353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710260715.4A Active CN106907706B (en) | 2017-04-20 | 2017-04-20 | Ignition device and combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106907706B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028051A (en) * | 2018-10-22 | 2018-12-18 | 北京巴布科克·威尔科克斯有限公司 | The low CO high-efficient pulverized coal burner of three eddy flows of one kind |
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|---|---|---|---|---|
| JPH09329304A (en) * | 1996-06-07 | 1997-12-22 | Ishikawajima Harima Heavy Ind Co Ltd | Pulverized coal burner |
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| CN206669724U (en) * | 2017-04-20 | 2017-11-24 | 烟台龙源电力技术股份有限公司 | A kind of igniter and burner |
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|---|---|---|---|---|
| CN2391107Y (en) * | 1999-10-26 | 2000-08-09 | 烟台开发区龙源电力燃烧控制工程有限公司 | Plasma ignitor for direct-ignition pulverized furnace |
| CN1294278A (en) * | 1999-10-26 | 2001-05-09 | 烟台开发区龙源电力燃烧控制工程有限公司 | Plasma igniter for direet ignition of coal powder furnace |
| CN2429752Y (en) * | 2000-03-27 | 2001-05-09 | 烟台开发区龙源电力燃烧控制工程有限公司 | Two stage flame ignitor for coal powder directly |
| CN101718433B (en) * | 2010-01-19 | 2011-07-20 | 王福珍 | Novel multi-channel coal powder combustor |
| CN202792007U (en) * | 2012-09-11 | 2013-03-13 | 扬州市银焰机械有限公司 | Crossed-jetting-type low-nitrogen energy-saving pulverized coal burner for rotary kiln |
| CN111706858A (en) * | 2020-07-24 | 2020-09-25 | 李心鹏 | Pulverized coal ignition device for power station boiler and kiln |
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2017
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09329304A (en) * | 1996-06-07 | 1997-12-22 | Ishikawajima Harima Heavy Ind Co Ltd | Pulverized coal burner |
| KR20020024430A (en) * | 2000-09-25 | 2002-03-30 | 윤영석 | Low Nitrogen Oxide Coal Firing Burner |
| CN101832550A (en) * | 2010-06-18 | 2010-09-15 | 上海交通大学 | Swirl pulverized-coal burner based on multi-level pulverized-coal concentration |
| WO2014027611A1 (en) * | 2012-08-14 | 2014-02-20 | バブコック日立株式会社 | Solid fuel burner and method for operating combustion device provided with solid fuel burner |
| CN205897210U (en) * | 2016-07-20 | 2017-01-18 | 京能十堰热电有限公司 | A plasma ignition system for thermal power factory |
| CN206669724U (en) * | 2017-04-20 | 2017-11-24 | 烟台龙源电力技术股份有限公司 | A kind of igniter and burner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028051A (en) * | 2018-10-22 | 2018-12-18 | 北京巴布科克·威尔科克斯有限公司 | The low CO high-efficient pulverized coal burner of three eddy flows of one kind |
| CN109028051B (en) * | 2018-10-22 | 2024-04-30 | 北京巴布科克·威尔科克斯有限公司 | Three-cyclone low-CO high-efficiency pulverized coal burner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106907706B (en) | 2023-12-08 |
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