CN1014090B - Wedge passive burner - Google Patents
Wedge passive burnerInfo
- Publication number
- CN1014090B CN1014090B CN 89102842 CN89102842A CN1014090B CN 1014090 B CN1014090 B CN 1014090B CN 89102842 CN89102842 CN 89102842 CN 89102842 A CN89102842 A CN 89102842A CN 1014090 B CN1014090 B CN 1014090B
- Authority
- CN
- China
- Prior art keywords
- wedge
- burner
- burning
- coal powder
- bluff body
- 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
Links
Abstract
The present invention relates to a non-Karman vortex wedge-shaped bluff body burner which belongs to a coal powder burner. A baffle plate with a certain dimension is arranged along the central line of the surface of a wedge-shaped blunt body (F), and Karman vortexes in a single vortex form are converted into stable double vortexes so that the firing, stable burning and burnout performance of the coal powder are good. The present invention further strengthens the coal powder burning, enhances the burning efficiency, and has good effect on eliminating and weakening the negative pressure fluctuation in a burning chamber.
Description
The present invention relates to a kind of burner.
China's patent No. be 86106374 and application number be in 87101964 " a kind of coal powder burner ", the breeze airflow that comes out in face of airduct, produce the high temperature gases recirculating district when streaming bluff body, its essence is the Karman vortex that the left and right sides of bluff body back direction of advance replaces appearing and subsiding.To the Karman vortex left and right sides replace appearing and subsiding characteristic and incident be to make in the burner unstability of the unstability that flows and flame and cause the problem that the negative pressure fluctuation strengthens in the combustion chamber to solve.This shortcoming is particularly responsive for the low coal of volatile matter.
The purpose of this invention is to provide a kind of non-karman vortex Wedge passive burner, can overcome above shortcoming.
For achieving the above object, the present invention has taked following technique measures.Utilize the dividing plate of a certain size, the karman vortex of bluff body back is cut to incoherent stable two whirlpools mutually, with the karman vortex (single whirlpool) that replaces alternately occurring, the entire effect of elimination karman vortex.Therefore, structure of the present invention shows as in the exit of an airduct Wedge passive is housed, and it places in the stable burning cavity, Wedge passive along on the center line at the back side of air-flow direction of advance dividing plate being housed, it is made by cast iron or steel alloy or other exotic materials.The height of dividing plate flushes with the Wedge passive height, and width L is 0.4-1.5 a times of bluff body back side width.
Fig. 1 is non-karman vortex Wedge passive burner.
Fig. 2 is the A-A cutaway view of Fig. 1.
Because the high temperature gases recirculating that the breeze airflow that comes out in face of airduct produces when streaming bluff body, its flow mechanism shows as along the left and right sides of bluff body back direction of advance and replaces the appearing and subsiding Karman vortex, therefore, structure provided by the present invention is for being equipped with Wedge passive (2) in the exit of an airduct (1), it is placed in the stable burning cavity (4), on the center line at the back side along the air-flow direction of advance (5) of Wedge passive (2) dividing plate (3) is housed, it is made by cast iron or steel alloy or other exotic materials.The height of dividing plate (3) is concordant with Wedge passive, and its width L and thickness determine that by test different with the ratio of bluff body width b according to an airduct width B, width L is 0.4-1.5 a times of bluff body back side width b.
Advantage of the present invention shows that the capacity of returns of high-temperature flue gas substantially exceeds general Wedge passive stabilizer, therefore, it catches fire, surely combustion and after-flame performance are more good, can further strengthen coal dust firing, improve efficiency of combustion, the negative pressure fluctuation of eliminating and weaken in the combustion chamber is had good result.
Claims (2)
1, a kind of burner that comprises Wedge passive, airduct, stable burning cavity is characterized in that on the center line at the back side along the air-flow direction of advance (5) of Wedge passive (2) dividing plate (3) being housed, and its material is cast iron or steel alloy or other exotic materials.
2, burner according to claim 1, the height that it is characterized by dividing plate (3) flushes with the Wedge passive height, and width L is 0.4-1.5 a times of bluff body back side width b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89102842 CN1014090B (en) | 1989-04-28 | 1989-04-28 | Wedge passive burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89102842 CN1014090B (en) | 1989-04-28 | 1989-04-28 | Wedge passive burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1046795A CN1046795A (en) | 1990-11-07 |
| CN1014090B true CN1014090B (en) | 1991-09-25 |
Family
ID=4854866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89102842 Expired CN1014090B (en) | 1989-04-28 | 1989-04-28 | Wedge passive burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1014090B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359125B (en) * | 2014-10-30 | 2017-02-01 | 南京航空航天大学 | Central igniting mechanism of combustor of scramjet engine |
| CN107246607B (en) * | 2017-07-06 | 2023-05-30 | 山西大学 | Automatic stable combustion system for four-corner tangential boiler |
| CN107461737B (en) * | 2017-08-10 | 2019-02-22 | 北京一亚高科能源科技有限公司 | A kind of non-pressure air compartment |
-
1989
- 1989-04-28 CN CN 89102842 patent/CN1014090B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1046795A (en) | 1990-11-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |