CN205227309U - Straight flow combustion ware with center wind - Google Patents
Straight flow combustion ware with center wind Download PDFInfo
- Publication number
- CN205227309U CN205227309U CN201521105408.1U CN201521105408U CN205227309U CN 205227309 U CN205227309 U CN 205227309U CN 201521105408 U CN201521105408 U CN 201521105408U CN 205227309 U CN205227309 U CN 205227309U
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- China
- Prior art keywords
- wind
- air
- burner
- center
- nozzle
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- Expired - Fee Related
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Abstract
The utility model discloses a straight flow combustion ware with center wind, including central wind passageway and central wind nozzle to and the transversal from interior to exterior who personally submits the rectangle wind passageway wall and the perimeter wind passageway wall that set gradually, wherein, form a wind passageway in wind passageway wall, formation perimeter wind passageway between wind passageway wall and the perimeter wind passageway wall, the both ends of center wind passageway are the air intake, have offered the air outlet among them, and the both ends of central wind passageway are all run through a wind passageway wall and are linked together with perimeter wind passageway, and the air outlet of central wind passageway feeds through to the air intake of central wind nozzle, and the air outlet orientation of central wind nozzle is the same with a wind flow direction. The utility model provides a pair of straight flow combustion ware with center wind surely fires the effect in the time of can increasing the boiler and use low volatility or low heat value coal and during boiler low load operation.
Description
Technical field:
The utility model belongs to the field of the boiler-burner of coal dust burning, is specifically related to a kind of DC burner with centre wind.
Background technology:
By the raising of national requirements for environmental protection, the DC burner adopted in current pulverized-coal fired boiler has all adopted various forms of light-dark separation device to be separated to realize boiler-burner coal powder light-dark mostly, thus realizes low nitrogen burning.But when using the lower coal of the lower or calorific value of some volatile matter and when boiler at low load runs, there will be the phenomenon of unstable combustion, this has had a strong impact on the safe operation of boiler.
Utility model content:
The purpose of this utility model is to provide a kind of DC burner with centre wind, can improve the stability of coal dust firing, ensures the safety of boiler operatiopn.
For achieving the above object, the utility model adopts following technical scheme to be achieved:
With a DC burner for centre wind, comprise center wind duct and centre wind nozzle, and the rectangular First air channel wall set gradually from the inside to the outside of cross section and surrounding air channel wall; Wherein, form First air passage in First air channel wall, between First air channel wall and surrounding air channel wall, form surrounding air passage;
The two ends of center wind duct are air inlet, air outlet is offered in the middle of it, the two ends of center wind duct are all run through First air channel wall and are connected with surrounding air passage, the air outlet of center wind duct is communicated to the air inlet of centre wind nozzle, and the air outlet of centre wind nozzle is towards identical with First air flow direction.
The utility model further improves and is, the cross section of First air channel wall and surrounding air channel wall is square.
The utility model further improves and is, center wind duct is square duct.
The utility model further improves and is, the intracavity section of centre wind nozzle is square or circular.
The utility model further improves and is, in the passage of center wind duct, side size range is 10mm-30mm.
The utility model further improves and is, the setting position of center wind duct is near the air outlet of First air passage.
The utility model further improves and is, the distance range between the air outlet of center wind duct and First air passage is 50mm-300mm.
The utility model further improves and is, the axis of centre wind nozzle and the dead in line of First air passage.
Compared with prior art, key problem in technology of the present utility model be following some:
1) the utility model is used for the boiler of low volatile or low heat value coal, or combustion stability during for improving boiler at low load, and its structure as depicted in figs. 1 and 2.This burner is primarily of compositions such as First air passage, surrounding air passage, center wind duct, centre wind nozzles.
2) the nozzle of direct current combustor place that provides of the utility model, by the wall perforate between First air and surrounding air, introduces one surrounding air in First air passage from surrounding air passage.
3) the utility model provide with in the DC burner of centre wind, the center wind duct introduced by surrounding air in First air passage is distributed in First air spout central, introduces from the surrounding air up and down of First air nozzle or left and right surrounding air.
4) the utility model provide with in the DC burner of centre wind, the center wind duct of First air nozzle both sides crosses in First air center, and through First air nozzle, flows to burner hearth and participates in burning.
5) the utility model provide with in the DC burner of centre wind, by the introducing of centre wind, the part coal dust of dense phase pulverized coal and dilute phase coal dust intersectional region can be made to catch fire in advance, and release heat heating dense phase pulverized coal, promote the burning of dense phase pulverized coal at rear portion.
6) the utility model provide with in the DC burner of centre wind, the introducing position of centre wind is determined according to burner air-coal separating mode, and center air force is determined according to surrounding air wall bore size.
7) the utility model provide with in the DC burner of centre wind, center wind duct can use as blunt the carrying of burner nozzle simultaneously.
In sum, a kind of DC burner with centre wind of the utility model, steady fuel efficiency fruit when can increase boiler low volatile or low heat value coal and when boiler at low load runs.
Accompanying drawing illustrates:
Fig. 1 is the front view of the utility model DC burner;
Fig. 2 is the side view of the utility model DC burner.
In figure: 1 is First air channel wall, 2 is surrounding air channel wall, and 3 is First air passage, and 4 is surrounding air passage, wind passage centered by 5, wind nozzle centered by 6.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of DC burner with centre wind of the utility model, comprises center wind duct 5 and centre wind nozzle 6, and the rectangular First air channel wall 1 set gradually from the inside to the outside of cross section and surrounding air channel wall 2; Wherein, form First air passage 3 in First air channel wall 1, between First air channel wall 1 and surrounding air channel wall 2, form surrounding air passage 4; The two ends of center wind duct 5 are air inlet, air outlet is offered in the middle of it, the two ends of center wind duct 5 are all run through First air channel wall 1 and are connected with surrounding air passage 4, the air outlet of center wind duct 5 is communicated to the air inlet of centre wind nozzle 6, the air outlet of centre wind nozzle 6 is towards identical with First air flow direction, and the dead in line of the axis of centre wind nozzle 6 and First air passage 3.
Preferably, the cross section of First air channel wall 1 and surrounding air channel wall 2 is square, and center wind duct 5 is square duct, and the intracavity section of centre wind nozzle 6 is square or circular.
During the utility model practical application, in the passage of center wind duct 5, side size range is 10mm-30mm; Distance range between the air outlet of center wind duct 5 and First air passage 3 is 50mm-300mm.
Operationally, First air, after light-dark separation device in primary air piping is separated, is divided into deep or light two strands of air-flows to DC burner, and under the effect of the bluff body served as in centre wind air channel 5, forms a recirculating zone at burner nozzle place.In the adherent air channel of DC burner, the adherent wind of part flows into centre wind nozzle 6 through centre wind air channel 5, and adds in First air recirculating zone, and part coal dust is caught fire in advance in this recirculating zone, and catching fire of dense phase pulverized coal of igniting, burner combustion is stablized.
Claims (8)
1. the DC burner with centre wind, it is characterized in that, comprise center wind duct (5) and centre wind nozzle (6), and the rectangular First air channel wall (1) set gradually from the inside to the outside of cross section and surrounding air channel wall (2); Wherein, form First air passage (3) in First air channel wall (1), between First air channel wall (1) and surrounding air channel wall (2), form surrounding air passage (4);
The two ends of center wind duct (5) are air inlet, air outlet is offered in the middle of it, the two ends of center wind duct (5) are all run through First air channel wall (1) and are connected with surrounding air passage (4), the air outlet of center wind duct (5) is communicated to the air inlet of centre wind nozzle (6), and the air outlet of centre wind nozzle (6) is towards identical with First air flow direction.
2. a kind of DC burner with centre wind according to claim 1, is characterized in that, the cross section of First air channel wall (1) and surrounding air channel wall (2) is square.
3. a kind of DC burner with centre wind according to claim 1, is characterized in that, center wind duct (5) is square duct.
4. a kind of DC burner with centre wind according to claim 3, is characterized in that, the intracavity section of centre wind nozzle (6) is square or circular.
5. a kind of DC burner with centre wind according to claim 3, is characterized in that, in the passage of center wind duct (5), side size range is 10mm-30mm.
6. a kind of DC burner with centre wind according to claim 1, is characterized in that, the air outlet of setting position near First air passage (3) of center wind duct (5).
7. a kind of DC burner with centre wind according to claim 6, is characterized in that, the distance range between the air outlet of center wind duct (5) and First air passage (3) is 50mm-300mm.
8. a kind of DC burner with centre wind according to claim 1, is characterized in that, the axis of centre wind nozzle (6) and the dead in line of First air passage (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521105408.1U CN205227309U (en) | 2015-12-28 | 2015-12-28 | Straight flow combustion ware with center wind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521105408.1U CN205227309U (en) | 2015-12-28 | 2015-12-28 | Straight flow combustion ware with center wind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205227309U true CN205227309U (en) | 2016-05-11 |
Family
ID=55902370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521105408.1U Expired - Fee Related CN205227309U (en) | 2015-12-28 | 2015-12-28 | Straight flow combustion ware with center wind |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205227309U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465779A (en) * | 2015-12-28 | 2016-04-06 | 西安热工研究院有限公司 | Direct flow burner with central air |
| CN106051758A (en) * | 2016-07-14 | 2016-10-26 | 无锡华光锅炉股份有限公司 | Arrangement structure of surrounding air |
-
2015
- 2015-12-28 CN CN201521105408.1U patent/CN205227309U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465779A (en) * | 2015-12-28 | 2016-04-06 | 西安热工研究院有限公司 | Direct flow burner with central air |
| CN106051758A (en) * | 2016-07-14 | 2016-10-26 | 无锡华光锅炉股份有限公司 | Arrangement structure of surrounding air |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20181228 |