CN2415255Y - Blunt body burner with fairing holes - Google Patents
Blunt body burner with fairing holes Download PDFInfo
- Publication number
- CN2415255Y CN2415255Y CN 00229670 CN00229670U CN2415255Y CN 2415255 Y CN2415255 Y CN 2415255Y CN 00229670 CN00229670 CN 00229670 CN 00229670 U CN00229670 U CN 00229670U CN 2415255 Y CN2415255 Y CN 2415255Y
- Authority
- CN
- China
- Prior art keywords
- bluff body
- flow
- cowling panel
- stream pipe
- blunt 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 - Fee Related
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- Gas Burners (AREA)
Abstract
The utility model relates to a blunt body burner with flow adjusting holes, which is composed of a flow enlarging pipe connected with a primary air pipe and a blunt body positioned in the flow enlarging pipe. The surface of the blunt body is provided with the flow adjusting holes which can be one row or a plurality of rows or thoroughly distributed on the surface of the blunt body. A flow adjusting plate can be further arranged between the flow enlarging pipe and the blunt body. The shape of the flow adjusting plate can be a flat plate, a folding surface plate or a curved surface plate and even a cylinder shape matched with the conical blunt body. The flow adjusting holes and the flow adjusting plate guide the air flow of concentrated fuel to the adjacent part of main flows and returning flows behind the blunt body or into a returning flow area. The heat transmission of the fuel of the returning flow area is strengthened, the ignition energy of the returning flow area to the main flows is strengthened and the low loading ability of flame stabilization is increased.
Description
The utility model relates to a kind of bluff body burner.
Existing bluff body burner, by the expansion stream pipe that connects with airduct, be positioned at the bluff body that expands the stream pipe and form, as the patent of invention ZN86106374 of HUST " a kind of coal burner ", forming the recirculating zone at the bluff body rear of coming flow path direction, thereby strengthening burning.After this, some technology is improved bluff body shape or internal structure again, but these bluff body burners exist coal dust to be diffused into the problem outside the wind district one time, and the steady flame ability of its underload is still powerful inadequately, during coals such as burning anthracite, also be difficult to satisfy the requirement of current underload peak regulation.
The utility model purpose is to provide a kind of bluff body burner of attached rectification hole, further can also have cowling panel in the bluff body both sides, the thick coal culm air-flow that the bluff body surface is formed directs in the main flow and recirculating zone intersection or recirculating zone at bluff body rear, strengthen the heat transfer of recirculating zone, coal dust is caught fire in advance breeze airflow.
Bluff body burner of the present utility model, by the expansion stream pipe that connects with airduct, be positioned at the bluff body that expands the stream pipe and form, it is characterized in that described bluff body surface has rectification hole, rectification hole can be a row or multi-row or spread all over the bluff body surface, the gross area S of described rectification hole and a described airduct cross-sectional area S
1Satisfy relational expression
S≤0．4S
1
Described bluff body burner can also be provided with cowling panel between described expansion stream pipe and the bluff body, and bluff body and cowling panel all are fixed in and expand stream pipe sidewall.
Above-mentioned bluff body burner, be further characterized in that expand in the stream pipe at come the described cowling panel of flow path direction front contract the back in described bluff body top, the cowling panel back apart from bluff body base vertical range smaller or equal to three times of bluff body bottom width.
Described cowling panel shape can for dull and stereotyped, also can be folding panel or curved slab.
In the aforementioned various bluff body burner, described bluff body can be hollow cone shape, the corresponding cylindrical shape that is with cowling panel of then described expansion stream pipe; Bluff body and cowling panel connect mutually by support bar and are fixed in expansion stream pipe sidewall by support bar.
The vertical range of aforementioned various bluff body burner cowling panel and bluff body center line needs to be determined by experiment or calculating according to actual conditions such as ature of coal, flow velocitys.
The bluff body burner of the attached rectification hole of the utility model, the dense fuel gas stream that rectification hole and cowling panel form the bluff body surface directs in main flow and recirculating zone intersection or the recirculating zone, strengthen the heat transfer of recirculating zone to fuel, thereby strengthen the ignition energy of recirculating zone, improve the steady flame ability of underload main flow.
Figure 1A is the bluff body burner vertical section schematic diagram of attached rectification hole.
Figure 1B is the right view of Figure 1A.
Fig. 2 is the bluff body burner vertical section schematic diagram of band writing board shape cowling panel.
Fig. 3 is the bluff body burner vertical section schematic diagram of flap shape cowling panel.
Fig. 4 is the bluff body burner vertical section schematic diagram of curved slab shape cowling panel.
Fig. 5 A is the bluff body burner vertical section schematic diagram of conical bluff body and cylindrical shape cowling panel.
Fig. 5 B is the right view of Fig. 5 A.
The label of above-mentioned each figure is: 1---an airduct, and 2---expand the stream pipe, 3---bluff body, 4---rectification hole, 5---cowling panel.
Claims (5)
1. bluff body burner, by the expansion stream pipe that connects with airduct, be positioned at the bluff body that expands the stream pipe and form, it is characterized in that described bluff body surface has rectification hole, rectification hole can be a row or multi-row or spread all over the bluff body surface, the gross area S of described rectification hole and a described airduct cross-sectional area S
1Satisfy relational expression
S≤0．4S
1
2. bluff body burner as claimed in claim 1 is characterized in that being provided with cowling panel between described expansion stream pipe and the bluff body, and bluff body and cowling panel all are fixed in and expand stream pipe sidewall.
3. bluff body burner as claimed in claim 2, it is characterized in that expanding in the stream pipe at come the described cowling panel of flow path direction front contract the back in described bluff body top, the cowling panel back apart from bluff body base vertical range smaller or equal to three times of bluff body bottom width.
4. as claim 2 or 3 described bluff body burners, it is characterized in that described cowling panel shape can for dull and stereotyped, also can be folding panel or curved slab.
5. as claim 1,2,3 described bluff body burners, it is characterized in that described bluff body is the open circles taper, described expansion stream pipe and cowling panel are cylindrical shape, and bluff body and cowling panel connect mutually by support bar and be fixed in expansion stream pipe sidewall by support bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00229670 CN2415255Y (en) | 2000-04-14 | 2000-04-14 | Blunt body burner with fairing holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00229670 CN2415255Y (en) | 2000-04-14 | 2000-04-14 | Blunt body burner with fairing holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2415255Y true CN2415255Y (en) | 2001-01-17 |
Family
ID=33592912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00229670 Expired - Fee Related CN2415255Y (en) | 2000-04-14 | 2000-04-14 | Blunt body burner with fairing holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2415255Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280921B (en) * | 2008-04-25 | 2010-10-06 | 西安交通大学 | Vortex combustor of coal fines circumferential direction concentration sectional stopping whorl |
| CN101761924B (en) * | 2008-12-23 | 2012-08-29 | 烟台龙源电力技术股份有限公司 | Pulverized coal concentrator and pulverized coal burner applying same |
| CN107356443A (en) * | 2017-08-18 | 2017-11-17 | 西安中车永电捷通电气有限公司 | Air-conditioner set checking experiment device |
-
2000
- 2000-04-14 CN CN 00229670 patent/CN2415255Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280921B (en) * | 2008-04-25 | 2010-10-06 | 西安交通大学 | Vortex combustor of coal fines circumferential direction concentration sectional stopping whorl |
| CN101761924B (en) * | 2008-12-23 | 2012-08-29 | 烟台龙源电力技术股份有限公司 | Pulverized coal concentrator and pulverized coal burner applying same |
| CN107356443A (en) * | 2017-08-18 | 2017-11-17 | 西安中车永电捷通电气有限公司 | Air-conditioner set checking experiment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |