CN206831482U - A kind of igniter and burner - Google Patents
A kind of igniter and burner Download PDFInfo
- Publication number
- CN206831482U CN206831482U CN201720418200.8U CN201720418200U CN206831482U CN 206831482 U CN206831482 U CN 206831482U CN 201720418200 U CN201720418200 U CN 201720418200U CN 206831482 U CN206831482 U CN 206831482U
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- Prior art keywords
- flow
- incendiary source
- cylinder
- concentration
- pulverized coal
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- 239000003245 coal Substances 0.000 claims abstract description 51
- 238000002485 combustion reaction Methods 0.000 claims abstract description 39
- 239000002817 coal dust Substances 0.000 claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 11
- 238000004939 coking Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
Burner igniting device technical field, more particularly to a kind of igniter and burner, the igniter, including cylinder are the utility model is related to, cylinder is provided with coal powder entrance, and cylinder is connected with plasma generator, and the end of plasma generator is incendiary source；Combustion barrel is provided with cylinder, for incendiary source in combustion barrel, incendiary source includes incendiary source shell, and Pulverized Coal Concentration and flow-disturbing ring are arranged with incendiary source shell, Pulverized Coal Concentration and flow-disturbing ring are annular protrusion, and coal dust channel is provided between the top of annular protrusion and the inwall of combustion barrel.A kind of igniter provided by the utility model and burner, after coal dust is by Pulverized Coal Concentration and flow-disturbing ring, annular coal dust flow-disturbing is formed at the rear of Pulverized Coal Concentration and flow-disturbing ring, and improve coal powder density, burnt by the way that combustion barrel is stable, ignition results can be improved, Pulverized Coal Concentration and its axial dimension of flow-disturbing ring are shorter, spread before pulverized coal flame burning is backward, the anti-coking performance of concentration and flow-disturbing ring is higher.
Description
Technical field
It the utility model is related 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, the coal dust in internal combustion chamber coal burner can be directly lighted, saved
About great amount of fuel oil, generally, plasma ignition burner are mostly multistage barrel structure.
Chinese patent CN201220306109 discloses a kind of direct-fire internal combustion chamber coal burner, as shown in Fig. 1,
Including outer barrel, incendiary source A and Pulverized Coal Concentration device 10, wherein, outer barrel is two-part cylinder, i.e., split type cylinder, specifically includes
Light a fire section 16 and flame spread section 17, section 16 of lighting a fire and flame spread section 17 are by bindiny mechanism along breeze airflow direction order
Connection, and it is coaxially arranged.Pulverized Coal Concentration device 10 is set in section 16 of lighting a fire, and incendiary source A is arranged on the coal dust in igniting section 16
In enrichment facility 10.And Pulverized Coal Concentration device 10 can be set in flame spread section 17, Pulverized Coal Concentration device can also be not provided with
10.When slagging, blocking or burning damage accident occur for the igniting section in the utility model, igniting section can be disassembled in time,
And changed, workload is small when igniting section and the life-span of the other parts of coal burner is matched, and overhauling,
Service work is not limited also by boiler operatiopn.
Prior art shortcoming：The coal dust enrichment of inner cylinder or pulverized coal concentrator region near incendiary source, in coal burner
Seed region section forms the region of high a coal powder density and high-temperature during work, although beneficial to the igniting of breeze airflow, simultaneously this
Slagging accident also easily occurs for section, causes coal burner to block even scaling loss.
Utility model content
The purpose of this utility model is to propose a kind of igniter and burner, to solve point present in prior art
Flame range section forms the region of high a coal powder density and high-temperature, and slagging accident easily occurs, and causes coal burner to block even
The technical problem of scaling loss.
To use following technical scheme up to this purpose, the utility model：
A kind of igniter, including cylinder, the cylinder are provided with coal powder entrance, and the cylinder is connected with plasma hair
Raw device, the end of the plasma generator is incendiary source；
Combustion barrel is provided with the cylinder, for the incendiary source in the combustion barrel, the incendiary source includes incendiary source
Shell, Pulverized Coal Concentration and flow-disturbing ring are arranged with the incendiary source shell, and the Pulverized Coal Concentration and flow-disturbing ring are located at the point
Coal dust channel is provided between the inwall of the annular protrusion of burning things which may cause a fire disaster case surface, the top of the annular protrusion and the combustion barrel.
Further, the annular protrusion includes the front end side wall and end side wall set along coal dust flow direction, described
Front end side wall is higher than the end side wall, and the front end side wall is connected with the end side wall by inclined wall.
Further, the axial distance between the end of the annular protrusion and the incendiary source casing ends is -200
~+100mm.
Further, the combustion barrel is single-stage combustion cylinder or multistage combustion cylinder.
Further, the width of the annular protrusion is 20-260mm.
Further, the Pulverized Coal Concentration and flow-disturbing ring are welded to connect with the incendiary source shell.
The utility model additionally provides a kind of burner, including above-mentioned igniter.
A kind of igniter provided by the utility model and burner, in use, coal dust enters cylinder by coal powder entrance
Breeze airflow is formed in vivo, breeze airflow is entered in combustion barrel by coal dust channel, in coal dust channel in flow process, coal
After powder is by Pulverized Coal Concentration and flow-disturbing ring, annular coal dust flow-disturbing is formed at the rear of Pulverized Coal Concentration and flow-disturbing ring, and improve coal dust
Concentration, burnt by the way that combustion barrel is stable, ignition results can be improved, meanwhile, Pulverized Coal Concentration and flow-disturbing ring use the shape of annular protrusion
Formula, its axial dimension is shorter, and (downstream) spreads before pulverized coal flame burning is backward, and the anti-coking performance of concentration and flow-disturbing ring is higher.
Brief description of the drawings
Fig. 1 is the front view of prior art；
Fig. 2 is the front view of igniter provided by the utility model；
Fig. 3 is the front view of the multistage combustion cylinder of igniter provided by the utility model.
In figure：
1st, cylinder；2nd, plasma generator；3rd, incendiary source；4th, combustion barrel；5th, incendiary source shell；6th, Pulverized Coal Concentration and disturb
Flow ring.
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by embodiment.
As shown in Figures 2 and 3, a kind of igniter, including cylinder 1, cylinder 1 are provided with coal powder entrance, and cylinder 1 is connected with
Plasma generator 2, the end of plasma generator 2 is incendiary source 3；
Combustion barrel 4 is provided with cylinder 1, for incendiary source 3 in combustion barrel 4, incendiary source 3 includes incendiary source shell 5, incendiary source
Pulverized Coal Concentration and flow-disturbing ring 6 are arranged with shell 5, Pulverized Coal Concentration and flow-disturbing ring 6 are the convex annular located at the surface of incendiary source shell 5
Rise, coal dust channel is provided between the top of annular protrusion and the inwall of combustion barrel 4.
After coal dust is entered in cylinder 1 by coal powder entrance, flowed along the axial direction of cylinder 1, after flowing at combustion barrel 4
Entered by coal dust channel in combustion barrel 4, breeze airflow in coal dust channel because Pulverized Coal Concentration and flow-disturbing ring 6 act on, coal dust
Passage necking, and then concentrate coal dust so that the coal powder density near incendiary source 3 is higher, meanwhile, flow-disturbing can be formed, high concentration
Coal dust and flow-disturbing effect are beneficial to flame combustion, therefore are favorably improved ignition results., can shape in combustion barrel 4 after flame ignition
Into stable incipient flame.
After flame ignition, because Pulverized Coal Concentration and flow-disturbing ring 6 are the structure of annular protrusion, its axial dimension is smaller, preferably
, the width of annular protrusion is 20-260mm.It will not be stopped after flame combustion and form high concentration, high-temperature region, but forward
(downstream) continues to spread, and will not have higher anti-coking in concentration and flow-disturbing ring internal-combustion substantially.
Preferably, annular protrusion includes the front end side wall and end side wall set along coal dust flow direction, and front end side wall is high
In end side wall, front end side wall is connected with end side wall by inclined wall.
The section of Pulverized Coal Concentration and flow-disturbing ring 6 is an inclined plane, and more conducively breeze airflow forms flow-disturbing, using plasma
Generator 2 is lighted a fire, and the energy of incendiary source 3 is larger, and the breeze airflow of disturbance is advantageous to the burning of flame, therefore, increases gas
The disturbance (flow-disturbing) of stream, beneficial to ignition operation.
Preferably, the axial distance between the end of annular protrusion and the end of incendiary source shell 5 is -200~+100mm.
Flow-disturbing can be achieved in coal dust within the range, wherein, the end of annular protrusion is arranged on incendiary source shell 5, also can be extended out
Incendiary source shell 5.
Combustion barrel 4 is single-stage combustion cylinder or multistage combustion cylinder.It is stable in combustion barrel 4 after incendiary source 3 lights coal dust
Burning, it may be selected to use single-stage combustion cylinder or multistage combustion cylinder according to ature of coal and operating mode.
Preferably, Pulverized Coal Concentration and flow-disturbing ring 6 are welded to connect with incendiary source shell 5.Make two by the way of being welded to connect
Person connects more firm, it is ensured that Pulverized Coal Concentration and the normal use of flow-disturbing ring 6.
The utility model additionally provides a kind of burner, including above-mentioned igniter.
In use, the igniter of burner can reach two kinds of technique effects：
First, ignition results are improved：Pulverized Coal Concentration and flow-disturbing ring 6, Pulverized Coal Concentration are set at the coal dust channel of combustion barrel 4
And flow-disturbing ring 6 make coal dust channel form necking structure, breeze airflow by when, breeze airflow can be made to realize flow-disturbing effect, and
Increase the concentration of the coal dust at Pulverized Coal Concentration and the downstream of flow-disturbing ring 6, now, then pass through the progress ignition operation of incendiary source 3, high concentration
Coal dust and the coal dust fluid of disturbance be beneficial to ignition operation, and then improve ignition results.
Secondly, anti-coking performance is high：Pulverized Coal Concentration and flow-disturbing ring 6 are annular protrusion, compared with the prior art in tubular knot
Structure, its axial width is smaller, and after coal dust is lighted, flame will not stop at incendiary source 3, and be to continue with downstream spreading, base
This improves the anti-coking performance of concentration and flow-disturbing ring not in concentration and flow-disturbing ring internal-combustion.
Technical principle of the present utility model is described above in association with specific embodiment.These descriptions are intended merely to explain this reality
With new principle, and the limitation to scope of protection of the utility model can not be construed in any way.Based on explanation herein,
Those skilled in the art, which would not require any inventive effort, can associate other embodiments of the present utility model,
These modes are fallen within the scope of protection of the utility model.
Claims (7)
1. a kind of igniter, it is characterised in that including cylinder (1), the cylinder (1) is provided with coal powder entrance, the cylinder
(1) plasma generator (2) is connected with, the end of the plasma generator (2) is incendiary source (3)；
Combustion barrel (4) is provided with the cylinder (1), the incendiary source (3) is in the combustion barrel (4), the incendiary source (3)
Including incendiary source shell (5), be arranged with Pulverized Coal Concentration and flow-disturbing ring (6) on the incendiary source shell (5), the Pulverized Coal Concentration and
Flow-disturbing ring (6) is the annular protrusion located at incendiary source shell (5) surface, the top of the annular protrusion and the combustion barrel
(4) coal dust channel is provided between inwall.
2. igniter according to claim 1, it is characterised in that the annular protrusion includes setting along coal dust flow direction
The front end side wall and end side wall put, the front end side wall are higher than the end side wall, the front end side wall and the end side
Wall is connected by inclined wall.
3. igniter according to claim 2, it is characterised in that outside the end of the annular protrusion and the incendiary source
Axial distance between shell (5) end is -200~+100mm.
4. igniter according to claim 1, it is characterised in that the combustion barrel (4) is single-stage combustion cylinder or multistage
Combustion barrel.
5. igniter according to claim 1, it is characterised in that the width of the annular protrusion is 20-260mm.
6. igniter according to claim 1, it is characterised in that the Pulverized Coal Concentration and flow-disturbing ring (6) and the point
Burning things which may cause a fire disaster shell (5) is welded to connect.
7. a kind of burner, it is characterised in that including the igniter described in claim any one of 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720418200.8U CN206831482U (en) | 2017-04-20 | 2017-04-20 | A kind of igniter and burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720418200.8U CN206831482U (en) | 2017-04-20 | 2017-04-20 | A kind of igniter and burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206831482U true CN206831482U (en) | 2018-01-02 |
Family
ID=60768736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720418200.8U Active CN206831482U (en) | 2017-04-20 | 2017-04-20 | A kind of igniter and burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206831482U (en) |
-
2017
- 2017-04-20 CN CN201720418200.8U patent/CN206831482U/en active Active
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