CN201163023Y - Trace oil ignition rotational flow coal powder burner with central wind - Google Patents
Trace oil ignition rotational flow coal powder burner with central wind Download PDFInfo
- Publication number
- CN201163023Y CN201163023Y CNU2007201332298U CN200720133229U CN201163023Y CN 201163023 Y CN201163023 Y CN 201163023Y CN U2007201332298 U CNU2007201332298 U CN U2007201332298U CN 200720133229 U CN200720133229 U CN 200720133229U CN 201163023 Y CN201163023 Y CN 201163023Y
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- CN
- China
- Prior art keywords
- combustion chamber
- oil
- flame
- pulverized coal
- burner
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a micro-oil ignition swirling pulverized coal burner with central air, comprising a burner body, a swirling spiral casing, a combustion chamber and an oil combustion chamber, wherein pulverized coal collectors are arranged inside the combustion chamber; a plurality of pulverized coal collectors are alternately arranged in the circumferential direction of the inner sidewall of the burner; a central air duct is arranged inside the swirling spiral casing; the central air duct stretches into the combustion chamber and is connected with the oil combustion chamber; an ignition oil gun can be arranged inside the central air duct. The burner is characterized in that: an outlet of the oil combustion chamber is provided with a flame guiding device used for guiding flame to the pulverized coal collectors; a guiding groove is arranged inside the flame guiding device; the guiding groove is provided with a plurality of outlets, and the outlets respectively point to the pulverized coal collectors; the built-in guiding groove and the outlets thereof ensure that flame can smoothly pass and simultaneously flow to the pulverized coal collectors under the guiding effect of the guiding groove. Due to the flame guiding device, oil flame directly flows to pulverized coal concentration positions on concave surfaces of the pulverized coal collectors, so as to ensure that pulverized coal is easy to ignite.
Description
Technical field
The utility model belongs to a kind of coal burner, belongs to generating plant pulverized coal boiler starting ignition and low-load combustion-stabilizing burner particularly.
Background technology
Current coal is in short supply, the ature of coal that boiler is used is difficult to be guaranteed, when causing on the one hand in the running of power station high load capacity, ash erosion is serious, because general pulverized-coal fired boiler is lower than at 70% o'clock at load, burning can be unstable on the other hand, for keeping smooth combustion under the underload, it is combustion-supporting to throw oil again, has had a strong impact on the safety and economic operation of station boiler.Burner is the key that station boiler catches fire and surely uses, so the coal burner that various tiny-oil ignitions are used emerges in an endless stream, the coal burner that these tiny-oil ignitions are used mostly is provided with coal collector, make the coal dust localized concentrations, reach the fuel-efficient purpose of tiny-oil ignition, but its major defect is: the oily flame behind the oil firing can not directly flow to the Pulverized Coal Concentration position of coal collector, fails effectively to improve efficiency of combustion.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of eddy flow powdered coal burner lit up by tiny oil with center wind is provided, this burner is directly guided flame the Pulverized Coal Concentration position of coal collector into by the flame guiding device, reaches the fuel-efficient purpose of tiny-oil ignition.
In order to solve the problems of the technologies described above, the utility model by the following technical solutions:
A kind of eddy flow powdered coal burner lit up by tiny oil with center wind, comprise burner body, eddy flow spiral case, combustion chamber, oil combustion chamber, be provided with coal collector in the combustion chamber, described coal collector is provided with a plurality of along burner madial wall circumferencial direction at interval, be provided with central air hose in the described eddy flow spiral case, central air hose stretches in the combustion chamber and is connected with oil combustion chamber, some kerosene rifles can be arranged in the central air hose, it is characterized in that: the outlet of described oil combustion chamber is provided with the flame guiding device that is used for flame is guided into coal collector.
By above technical scheme as can be known: make oily flame directly flow to the Pulverized Coal Concentration position of coal collector concave surface owing to be provided with the flame guiding device, coal dust is very easily caught fire, reach fuel-efficient purpose.
In order to solve the problems of the technologies described above, the utility model adopts following further technical scheme:
Be provided with guiding groove in the described flame guiding device, the outlet of guiding groove is a plurality of, and coal collector is all pointed in each outlet.This puts guiding groove and a plurality of outlet, flame is passed through smoothly, and flow to a plurality of coal collectors simultaneously under the guiding function of guiding groove.
The outlet of described guiding groove is petal.The outlet of guiding groove is designed to petal, and outlet is dispersed to coal collector.
The utility model compared with prior art has following advantage: because the centrifugal action of eddy flow spiral case, in the process of rotational flow, coal dust forms localized concentrations by coal collector, mix, catch fire with center wind after the mechanical atomization of fuel oil process oil gun, oil flame is through there being the oil combustion chamber outlet of flame guiding device, directly flow to thick coal culm, very easily make coal powder ignition, reach fuel-efficient purpose.Adopt the result of the test of this burner to show: but igniting fuel-economizing 70% during kindling, and boiler load is reduced to need not drop in 50% o'clock and helps fuel oil, and is safe and reliable, can use continuously for a long time.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is that the B-B of Fig. 1 is to cutaway view.
Fig. 4 is a partial sectional view of the present utility model.
The specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, the utility model is improvements over the prior art, comprise burner body 1, combustion chamber 2, oil combustion chamber 3, eddy flow spiral case 5, oil combustion chamber 3 is arranged in the combustion chamber 2, burner body 1 has interior secondary air duct 12 and outer secondary air duct 13, the position that is positioned at outlet in the combustion chamber 2 also is provided with coal collector, described coal collector is provided with a plurality of along burner madial wall circumferencial direction at interval, coal collector in this example is a plurality of certain axial lengths that have, be provided with at interval along burner madial wall circumferencial direction, the arc-shaped partition 4 that extends radially inwardly, the cross section of dividing plate 4 is C type (referring to Fig. 3), the inlet of combustion chamber 2 is connected with eddy flow spiral case 5 (referring to Fig. 2), be provided with central air hose 6 in the eddy flow spiral case 5, central air hose 6 stretches in the combustion chamber 2 and is connected with oil combustion chamber 3, and torch oil gun 11 can be arranged in the central air hose 6.
Referring to Fig. 3, Fig. 4, the outlet of oil combustion chamber 3 is provided with the flame guiding device 7 that is used for oily flame is guided into coal collector, be provided with guiding groove 8 in the described flame guiding device 7, the outlet 9 of guiding groove 8 is a plurality of, coal collector is all pointed in each outlet, this puts guiding groove 8 and a plurality of outlet, flame is passed through smoothly, and under the guiding function of guiding groove 8, flow to a plurality of coal collectors simultaneously, the outlet 9 of guiding groove 8 can be designed to be petal, the outlet of guiding groove 8 is designed to petal, and outlet is dispersed to coal collector.
A wind carries coal dust and tangentially enters eddy flow spiral case 5 by import, because the centrifugal action of spiral case 5, coal dust concentrates to combustion chamber 2 walls gradually in the process of rotational flow, be provided with coal collector in the combustion chamber 2, the arc-shaped partition 4 of coal collector forms concave surface 10, form the localized concentrations of coal dust at this position, torch oil gun 11 stretches into oil combustion chamber 3 from central air hose 6, fuel oil mixes, catches fire with center wind after the oil gun mechanical atomization, oil flame is through flame guiding device 7, directly flow to thick coal culm, very easily make coal powder ignition, reach fuel-efficient purpose.
Claims (5)
1, a kind of eddy flow powdered coal burner lit up by tiny oil with center wind, comprise burner body (1), eddy flow spiral case (5), combustion chamber (2), oil combustion chamber (3), the combustion chamber is provided with coal collector in (2), described coal collector is provided with a plurality of along burner madial wall circumferencial direction at interval, be provided with central air hose (6) in the described eddy flow spiral case (5), central air hose (6) stretches in the combustion chamber (2) and is connected with oil combustion chamber (3), some kerosene rifles (11) can be arranged in the central air hose (6), it is characterized in that: the outlet of described oil combustion chamber (2) is provided with the flame guiding device (7) that is used for flame is guided into coal collector.
2, a kind of eddy flow powdered coal burner lit up by tiny oil with center wind as claimed in claim 1 is characterized in that: be provided with guiding groove (8) in the described flame guiding device (7), the outlet of guiding groove (8) is a plurality of, and coal collector is all pointed in each outlet.
3, a kind of eddy flow powdered coal burner lit up by tiny oil with center wind as claimed in claim 2, it is characterized in that: the outlet of described guiding groove (8) is petal.
4, a kind of eddy flow powdered coal burner lit up by tiny oil with center wind as claimed in claim 1 or 2 is characterized in that: coal collector is a plurality of arc-shaped partitions that have certain axial length, extend radially inwardly (4).
5,, a kind of eddy flow powdered coal burner lit up by tiny oil as claimed in claim 5 with center wind, it is characterized in that: the cross section of described dividing plate (4) is the C type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201332298U CN201163023Y (en) | 2007-12-25 | 2007-12-25 | Trace oil ignition rotational flow coal powder burner with central wind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201332298U CN201163023Y (en) | 2007-12-25 | 2007-12-25 | Trace oil ignition rotational flow coal powder burner with central wind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201163023Y true CN201163023Y (en) | 2008-12-10 |
Family
ID=40183958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201332298U Expired - Lifetime CN201163023Y (en) | 2007-12-25 | 2007-12-25 | Trace oil ignition rotational flow coal powder burner with central wind |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201163023Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100567816C (en) * | 2007-12-25 | 2009-12-09 | 杭州意能节能技术有限公司 | A kind of eddy flow powdered coal burner lit up by tiny oil with center wind |
-
2007
- 2007-12-25 CN CNU2007201332298U patent/CN201163023Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100567816C (en) * | 2007-12-25 | 2009-12-09 | 杭州意能节能技术有限公司 | A kind of eddy flow powdered coal burner lit up by tiny oil with center wind |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20071225 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |