CN208237857U - A kind of coal burner actively adjusting flame stroke - Google Patents
A kind of coal burner actively adjusting flame stroke Download PDFInfo
- Publication number
- CN208237857U CN208237857U CN201820716248.1U CN201820716248U CN208237857U CN 208237857 U CN208237857 U CN 208237857U CN 201820716248 U CN201820716248 U CN 201820716248U CN 208237857 U CN208237857 U CN 208237857U
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- China
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- air
- primary air
- oil gun
- choke plug
- piping
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Abstract
The utility model discloses a kind of coal burners for actively adjusting flame stroke, including the oil gun being successively socketed from inside to outside, primary air piping and secondary air channel, burning torch is equipped at the air outlet of primary air piping, and the oil gun is to be slidably socketed with primary air piping, in the air outlet of primary air piping, the nozzle of oil gun is equipped with choke plug, the choke plug is pre-small post-large conical structure, when oil gun sliding, choke plug thereon also moves therewith, the wind-force size of the air outlet of adjustable primary air piping, and then the spray distance (stroke) of adjustable flame flow, its flexible adjustment is high, practicability is stronger, it can be adjusted according to the needs of boiler, substantially increase efficiency of combustion.In addition, increased choke plug, not only avoids primary air piping line clogging, and wind coal flow velocity can be slowed down, guarantee full combustion, substantially increase the burn-off rate of coal dust, there is good generalization.
Description
Technical field
The utility model relates to a kind of coal burners for actively adjusting flame stroke, belong to coal-fired combusting device field.
Background technique
Currently, the problems such as generally existing coal dust firing of coal burner is insufficient or air hose is easy stifled powder, which is because,
Coal burner internal-combustion space is smaller, blocks up powder in order to prevent, it is therefore desirable to keep powder feed rate fast, but powder feed rate is too fast
Fastly, the coal dust firing time will be made insufficient, especially for low volatile coal, coal dust burn-off rate is lower, is likely to result in coal dust
After unburned carbon in flue dust is higher after burning, moreover the coal dust not caught fire sufficiently enters burner hearth, cannot efficiently it burn to improve furnace
Bore temperature meets combustion requirements；If slowing down the powder feed rate in primary air piping, but which easily causes primary air piping product
Powder blocks pipeline, seriously affects boiler operatiopn, the method is infeasible.
Application No. is 201620542944 to disclose a kind of oxygen-rich coal dust reflux premix burner, in going out for primary air piping
Reflux cap and burning torch are equipped at air port, reflux calotte is formed there are gap and flowed back in primary air piping air outlet and with primary air piping
Channel, this structure can effectively reduce the flow velocity of First air coal dust, achieve the effect that burn at a slow speed, while avoiding one
Secondary air hose line clogging, obtains efficient burn-off rate.But the flow velocity of First air coal dust is too high, after reflux cap reflux
It is also easy to produce disorder when mixing with distinguished and admirable in secondary air channel, the flame spray distance (stroke) of oil gun is will seriously affect, makes flame
Efficiency of combustion is not high when spraying into boiler, and then will affect boiler operatiopn.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of this coal burners for actively adjusting flame stroke, can
With overcome the deficiencies in the prior art.
In order to solve the above technical problems, the utility model is achieved through the following technical solutions: a kind of active adjusting fire
The coal burner of flame stroke, including the oil gun, primary air piping and secondary air channel being successively socketed from inside to outside, in primary air piping
Burning torch is equipped at air outlet, and the oil gun and primary air piping is be slidably socketed, in the air outlet of primary air piping, oil gun
Nozzle is equipped with choke plug.
Aforementioned choke plug is ceramic material wear-resisting, resistant to high temperature.
Aforementioned choke plug is pre-small post-large conical structure.
The axis of great circle of aforementioned conical structure is not more than the interior circular diameter of primary air piping.
The air outlet section of aforementioned secondary air channel is more slightly smaller than air inlet section.
It is socketed with circumference air hose in the air outlet section of aforementioned secondary air channel, and offers more than one on secondary air channel
The aperture being connected to circumference air hose.
The aperture inclination 30o~60o setting opened up on aforementioned secondary air channel, and the contracting of inclined direction and secondary air channel
Distinguished and admirable flow direction is consistent at mouthful.
Compared with the prior art, the utility model discloses a kind of coal burner for actively adjusting flame stroke, make
Oil gun is slidably socketed with primary air piping, and increases choke plug in the nozzle of oil gun, and the choke plug is pre-small post-large circle
Pyramidal structure, and the axis of great circle of conical structure is not more than the interior circular diameter of primary air piping, is when oil gun slides, thereon
Choke plug also moves therewith, and then the wind-force size of the air outlet of adjustable primary air piping, and choke plug goes out to primary air piping
Air port close to when, air outlet bore becomes smaller, cause the flow velocity of First air coal dust to enhance, formed flame flow it is longer, conversely, resistance
When stream fills in the air outlet far from primary air piping, the flame flow of formation shortens.It can be with the length of flexible modulation flame, and practicability is more
By force, it can be adjusted according to the needs of boiler, substantially increase efficiency of combustion.In addition, the height being passed through from primary air piping
Fast wind pulverized coal flow will shunt after encountering choke plug, and the fuel that a part is sprayed with oil gun spout burns, and form flame
Stream, a part can slow down after being stopped by choke plug, and along the inner wall and secondary air channel that the cone angle of choke plug arrives at secondary air channel
Air mixing, the air stream flow direction in cone angle direction and secondary air channel is consistent, disorder stream will not be generated, to will not influence
The flame flow that burning generates, is in addition slowly conveyed by the wind in secondary air channel, and is arrived in front of oil gun spout and burnt, not only
It can guarantee full combustion, substantially increase the burn-off rate of coal dust, and the stream of primary air piping can be improved in choke plug after increase
Speed, can be to avoid primary air piping line clogging.
Aforementioned choke plug is made of ceramic material wear-resisting, resistant to high temperature, and the service life is longer.
The air outlet section internal diameter of the secondary air channel is more slightly smaller than air inlet section internal diameter, uses air port section and forms necking, is contracting
Mouth section is burnt, and heat is assembled and is not easy to lose, and is more energy-saving and environmentally friendly.
The air outlet section of the secondary air channel is socketed with circumference air hose, is passed through cooling wind from the air inlet of circumference air hose, can
To carry out overheating protection to burner, its service life is improved.Also, more than one and surrounding air are offered on secondary air channel
Distinguished and admirable at pipe connection, inclined direction and secondary air channel necking flows to consistent aperture, and the wind of circumference air hose is allow to enter combustion
Region is burnt, air film protection is formed at necking, protects the secondary air channel inner wall not slagging coking of necking combustion zone, can effectively extend
The service life of burner.
The utility model structure is simple, easy to operate, and economic and practical is strong, energy conservation and environmental protection, by with First air
The oil gun nozzle that pipe is slidably socketed increases a choke plug, not only avoids primary air piping line clogging, but also can pass through
Choke plug slows down wind coal flow velocity, guarantees full combustion, substantially increases the burn-off rate of coal dust, especially can be by sliding choked flow
Plug adjusts the flow velocity of primary air piping air outlet, and then adjusts the spray distance of flame flow, can more preferably guarantee the efficient fortune of boiler
Row has good generalization.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe:
As shown in Figure 1, a kind of coal burner for actively adjusting flame stroke, including oil gun 1, set on the oil gun 1
There are oily oxygen import 102, coal oxygen import 103 and other fuel inlets 101, primary air piping 2, First air are socketed with outside oil gun 1
It is socketed with secondary air channel 3 outside pipe 2, burning torch 5, also, the oil gun 1 and First air are equipped at the air outlet of primary air piping
Pipe 2 be slidably socketed, at the air outlet 202 of primary air piping 2, the nozzle of oil gun be equipped with choke plug 6, in choke plug 6
Mandrel line is equipped with the through-hole to match with 1 outside diameter of oil gun, and oil gun 1 passes through through-hole and choke plug 6 is made to be connected in oil gun 1
On, the choke plug 6 is ceramic material resistant to high temperature, and fire resistance is good, long service life, and the choke plug 6 is pre-small post-large
Conical structure, and the axis of great circle of conical structure is not more than the interior circular diameter of primary air piping 2.
In use, oily oxygen, coal oxygen and other fuel are mixed into oil gun 1, and from the air inlet of primary air piping 2 201
It is passed through coal dust, the air mixture of high flow rate, the air of low flow velocity is passed through at the air inlet 301 of secondary air channel 3, uses burning torch
5 light a fire, and the oil gun 1 is to be slidably socketed with primary air piping 2, the relative motion of regulating oil gun 1, the setting of 1 front end of oil gun
The wind-force size of the air outlet 202 of the adjustable primary air piping 2 of choke plug 6, the coal dust being passed through from primary air piping 2 encounter choke plug
It will be shunted after 6, the fuel that a part is sprayed with 1 spout of oil gun burns, and forms flame flow, a part is by choke plug 6
It will slow down after blocking, and arrive at the inner wall of secondary air channel 3 along the conical surface of choke plug 6 and mixed with the air in secondary air channel 3, by
Wind at a slow speed in secondary air channel 3 drives it to continue to convey, and arrives in front of 1 spout of oil gun and burn, not only can be to avoid one
Secondary 2 line clogging of air hose, and guarantee full combustion, there is efficient burn-off rate.In addition, the going out to primary air piping 2 of choke plug 6
Air port 202 close to when, the flow velocity of First air coal dust will enhance, and the flame flow formed is longer, conversely, choke plug 6 is far from primary
When the air outlet of air hose 2, the flame flow formed shortens.
302 sections of internal diameters of air outlet of the secondary air channel 3 are more slightly smaller than 301 sections of internal diameters of air inlet, make 302 sections of air outlet formation
Necking can make 302 sections of the air outlet heat to burn aggregations, it is not easy to lose, to improve the temperature of burning, energy saving
It is good.
302 sections of air outlet in the secondary air channel 3 are socketed with circumference air hose 4, are passed through from the air inlet 401 of circumference air hose
Cooling wind can carry out overheating protection to burner, improve its service life.Also, offered on secondary air channel 2 one with
The upper aperture 303 be connected to circumference air hose 4, aperture 303 tilt 30o~60o and are arranged, make to flow through from aperture 303 distinguished and admirable and two
The distinguished and admirable flow direction of secondary 3 necking section of air hose is consistent, and the wind of circumference air hose 4 can enter combustion zone, the shape at necking from aperture 303
It is protected at air film, protects the 3 inner wall not slagging coking of secondary air channel of necking combustion zone, and effectively extend the use longevity of burner
Life.
Claims (7)
1. a kind of coal burner for actively adjusting flame stroke, including be successively socketed from inside to outside oil gun, primary air piping and
Secondary air channel is equipped with burning torch at the air outlet of primary air piping, it is characterised in that: the oil gun is sliding sleeve with primary air piping
It connects, is equipped with choke plug in the air outlet of primary air piping, the nozzle of oil gun.
2. the coal burner according to claim 1 for actively adjusting flame stroke, it is characterised in that: the choke plug is
Ceramic material wear-resisting, resistant to high temperature.
3. the coal burner according to claim 2 for actively adjusting flame stroke, it is characterised in that: the choke plug is
Pre-small post-large conical structure.
4. the coal burner according to claim 3 for actively adjusting flame stroke, it is characterised in that: the cone knot
The axis of great circle of structure is not more than the interior circular diameter of primary air piping.
5. the coal burner according to claim 1 for actively adjusting flame stroke, it is characterised in that: the secondary air channel
Air outlet section it is more slightly smaller than air inlet section, use air port section formed necking.
6. the coal burner according to claim 5 for actively adjusting flame stroke, it is characterised in that: in the Secondary Air
The air outlet section of pipe is socketed with circumference air hose, and offer on secondary air channel more than one be connected to circumference air hose it is small
Hole.
7. the coal burner according to claim 6 for actively adjusting flame stroke, it is characterised in that: in the Secondary Air
The aperture inclination 30o~60o setting opened up on pipe, and the distinguished and admirable flow direction of the necking section of inclined direction and secondary air channel is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820716248.1U CN208237857U (en) | 2018-05-15 | 2018-05-15 | A kind of coal burner actively adjusting flame stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820716248.1U CN208237857U (en) | 2018-05-15 | 2018-05-15 | A kind of coal burner actively adjusting flame stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208237857U true CN208237857U (en) | 2018-12-14 |
Family
ID=64579606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820716248.1U Active CN208237857U (en) | 2018-05-15 | 2018-05-15 | A kind of coal burner actively adjusting flame stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208237857U (en) |
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2018
- 2018-05-15 CN CN201820716248.1U patent/CN208237857U/en active Active
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