CN105444165A - Direct-flow burner with anti-wear air channel - Google Patents
Direct-flow burner with anti-wear air channel Download PDFInfo
- Publication number
- CN105444165A CN105444165A CN201510998045.7A CN201510998045A CN105444165A CN 105444165 A CN105444165 A CN 105444165A CN 201510998045 A CN201510998045 A CN 201510998045A CN 105444165 A CN105444165 A CN 105444165A
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- China
- Prior art keywords
- air channel
- wall
- channel wall
- burner
- passage
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
Abstract
The invention discloses a direct-flow burner with an anti-wear air channel. The direct-flow burner comprises a primary air channel wall and a surrounding air channel wall which respectively have a rectangular cross section and are sequentially arranged from inside to outside, wherein a primary air channel is formed in the primary air channel wall, and a surrounding air channel is formed between the primary air channel wall and the surrounding air channel wall; the outer wall of the primary air channel wall is also provided with an anti-wear air channel communicated with the primary air channel, and an air inlet of the anti-wear air channel faces to the flowing direction of surrounding air. When the direct-flow burner works, part of surrounding air flows from the surrounding air channel to the primary air channel through the anti-wear air channel and washes against the inner wall of the primary air channel, so that most of pulverized coal carried by primary air is isolated from the inner wall of the primary air channel, and the condition that the inner wall of the primary air channel is worn by pulverized coal particles is avoided.
Description
Technical field:
The invention belongs to boiler and use the field of abrasiveness compared with the burner of strong coal kind, be specifically related to a kind of DC burner with abrasionproof wind.
Background technology:
When using the stronger coal of some abrasiveness, it is fast that boiler is faced with the burner rate of wear, and the phenomenon that the degree of wear is serious, this makes boiler usually will keep in repair burner and change in a short time, causes larger loss to power plant.
Solution burner uses abrasiveness to be had following compared with preventing-abrasion method conventional during strong coal kind: burner adopts the good steel of wearability to manufacture; Burner position easy to wear build-up wear-resistant damages steel, and carries out thickening process to relevant position; The process of subsides potsherd is carried out at burner position easy to wear.These Precautionary Measure can alleviate the abrasion condition of burner nozzle above, but cost is higher, and fundamentally can not solve the wear problem of burner.
Invention is held:
The object of this invention is to provide a kind of DC burner with abrasionproof wind, DC burner can being strengthened using abrasiveness compared with anti-wear ability during strong coal kind, improving the service life of burner.
For achieving the above object, the present invention adopts following technical scheme to be achieved:
A kind of DC burner with abrasionproof wind, comprise 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 outer wall of First air channel wall is also provided with the abrasionproof wind passage be connected with First air passage, and the air inlet of abrasionproof wind passage is met to surrounding air flow direction.
The present invention further improves and is, the cross section of First air channel wall and surrounding air channel wall is square.
The present invention further improves and is, abrasionproof wind passage is circular channel.
The present invention further improves and is, the internal diameter of abrasionproof wind passage is 5mm-30mm.
The present invention further improves and is, the angle between the axis of abrasionproof wind passage and the axis of First air channel wall is acute angle.
The present invention further improves and is, the angle between the axis of abrasionproof wind passage and the outer wall of First air channel wall is acute angle.
The present invention further improves and is, on the outer wall of First air channel wall, circumference is provided with several abrasionproof wind passages.
The present invention further improves and is, the outer wall of First air channel wall is provided with some row abrasionproof wind passages along the axis of First air channel wall.
Compared with prior art, key problem in technology of the present invention be following some:
1) the present invention be used for using abrasiveness comparatively strong coal kind time protection DC burner structure, slow down its rate of wear, extends the DC burner life-span.Its structure is as shown in what Fig. 2 of Fig. 1.This burner mainly contains the compositions such as direct current wind passage, surrounding air passage, abrasionproof wind passage.
2) DC burner place provided by the invention, in the surrounding air passage between First air channel wall and surrounding air channel wall, is uniformly distributed some abrasionproof wind passages.DC burner operationally, partial perimeter wind flows into First air passage by this abrasionproof wind passage in surrounding air passage, and wash away First air vias inner walls face, thus most of coal dust that First air is carried and the isolation of First air vias inner walls face, prevent pulverized coal particle from causing wearing and tearing to First air vias inner walls face;
3), in the DC burner with abrasionproof wind provided by the invention, by being evenly arranged the aperture of some quantity at surrounding air internal face, and respective apertures position arranges abrasionproof wind passage in surrounding air passage.
4), in the DC burner with abrasionproof wind provided by the invention, the existence of abrasionproof wind passage makes the abrasionproof wind entered First air passage from surrounding air passage wash away First air vias inner walls face with the form of axial rotational flow along First air airflow direction after entering First air passage with layout;
5) provided by the inventionly to determine according to actual conditions such as coal and burner thermic loads with the abrasionproof wind number of channels in the DC burner of abrasionproof wind and position;
6) provided by the invention less with the abrasionproof air quantity in the DC burner of abrasionproof wind, therefore can not cause harmful effect to coal dust fired state in the burner;
7) the present invention is applicable to use the stronger coal of abrasiveness, is also applicable to use the general coal of abrasiveness.
In sum, a kind of DC burner with abrasionproof wind of the present invention, can protect and use abrasiveness compared with DC burner during strong coal kind, extends the life-span of DC burner.
Accompanying drawing illustrates:
Fig. 1 is the front view of DC burner of the present invention;
Fig. 2 is the side view of DC burner of the present invention.
In figure: 1 is First air channel wall, 2 is surrounding air passage, and 3 is First air passage, and 4 is surrounding air channel wall, and 5 is abrasionproof wind passage.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As depicted in figs. 1 and 2, a kind of DC burner with abrasionproof wind of the present invention, comprise the rectangular First air channel wall 1 set gradually from the inside to the outside of cross section and surrounding air channel wall 4, wherein, form First air passage 3 in First air channel wall 1, between First air channel wall 1 and surrounding air channel wall 4, form surrounding air passage 2; The outer wall of First air channel wall 1 is also provided with the abrasionproof wind passage 5 be connected with First air passage 3, and the air inlet of abrasionproof wind passage 5 is met to surrounding air flow direction.
Preferably, the cross section of First air channel wall 1 and surrounding air channel wall 4 is square, and abrasionproof wind passage 5 is circular channel.
Preferably, the angle between the axis of abrasionproof wind passage 5 and the axis of First air channel wall 1 is acute angle, and the angle between the axis of abrasionproof wind passage 5 and the outer wall of First air channel wall 1 is acute angle.
Preferably, on the outer wall of First air channel wall 1, circumference is provided with several abrasionproof wind passages 5, and the outer wall of First air channel wall 1 is provided with some row abrasionproof wind passages 5 along the axis of First air channel wall 1.
During practical application of the present invention, the internal diameter of abrasionproof wind passage 5 is 5mm-30mm
DC burner operationally, partial perimeter wind flows into First air passage 3 by this abrasionproof wind passage 5 in surrounding air passage 2, and wash away First air passage 3 internal face, thus most of coal dust that First air is carried and the isolation of First air passage 3 internal face, prevent pulverized coal particle from causing wearing and tearing to First air passage 3 internal face.
Claims (8)
1. the DC burner with abrasionproof wind, it is characterized in that, comprise the rectangular First air channel wall (1) set gradually from the inside to the outside of cross section and surrounding air channel wall (4), wherein, form First air passage (3) in First air channel wall (1), between First air channel wall (1) and surrounding air channel wall (4), form surrounding air passage (2);
The outer wall of First air channel wall (1) is also provided with the abrasionproof wind passage (5) be connected with First air passage (3), and the air inlet of abrasionproof wind passage (5) is met to surrounding air flow direction.
2. a kind of DC burner with abrasionproof wind according to claim 1, is characterized in that, the cross section of First air channel wall (1) and surrounding air channel wall (4) is square.
3. a kind of DC burner with abrasionproof wind according to claim 1, is characterized in that, abrasionproof wind passage (5) is circular channel.
4. a kind of DC burner with abrasionproof wind according to claim 3, is characterized in that, the internal diameter of abrasionproof wind passage (5) is 5mm-30mm.
5. a kind of DC burner with abrasionproof wind according to claim 1, is characterized in that, the angle between the axis of abrasionproof wind passage (5) and the axis of First air channel wall (1) is acute angle.
6. a kind of DC burner with abrasionproof wind according to claim 5, is characterized in that, the angle between the axis of abrasionproof wind passage (5) and the outer wall of First air channel wall (1) is acute angle.
7. a kind of DC burner with abrasionproof wind according to claim 1, is characterized in that, on the outer wall of First air channel wall (1), circumference is provided with several abrasionproof wind passages (5).
8. a kind of DC burner with abrasionproof wind according to claim 1, it is characterized in that, the outer wall of First air channel wall (1) is provided with some row abrasionproof wind passage (5) along the axis of First air channel wall (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510998045.7A CN105444165B (en) | 2015-12-28 | 2015-12-28 | A kind of DC burner with abrasionproof wind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510998045.7A CN105444165B (en) | 2015-12-28 | 2015-12-28 | A kind of DC burner with abrasionproof wind |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105444165A true CN105444165A (en) | 2016-03-30 |
| CN105444165B CN105444165B (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510998045.7A Active CN105444165B (en) | 2015-12-28 | 2015-12-28 | A kind of DC burner with abrasionproof wind |
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| CN (1) | CN105444165B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048161U (en) * | 1989-03-06 | 1989-11-22 | 中国科学院力学研究所 | Anti-burn burner with air film |
| JPH08285231A (en) * | 1995-04-10 | 1996-11-01 | Babcock Hitachi Kk | Low nox pulverized coal burner and pulverized coal combustion device |
| US6467272B1 (en) * | 2001-06-25 | 2002-10-22 | Power Systems Mfg, Llc | Means for wear reduction in a gas turbine combustor |
| CN101403496A (en) * | 2007-08-29 | 2009-04-08 | 西门子公司 | Combined pulverized coal burner comprising an integrated pilot burner |
| CN201582810U (en) * | 2009-12-15 | 2010-09-15 | 中国航天空气动力技术研究院 | Dual-strengthening micro-oil ignition and flame stabilizer with oxygen combustion supporting |
| CN102393015A (en) * | 2011-05-27 | 2012-03-28 | 上海锅炉厂有限公司 | Dense-phase spiral-flow pulverized-coal burner |
| CN102444890A (en) * | 2011-12-26 | 2012-05-09 | 上海锅炉厂有限公司 | Micro-oil ignition burner |
| CN102980178A (en) * | 2011-09-05 | 2013-03-20 | 华北电力科学研究院有限责任公司 | Circulating fluidized bed boiler water wall air film wear-preventive device, circulating fluidized bed boiler water wall air film wear-preventive method and boiler |
| CN203731400U (en) * | 2014-03-10 | 2014-07-23 | 哈尔滨明远电力科技咨询有限公司 | Abrasion-proof wind device for preventing abrasion of pipe wall of circulating fluidized bed boiler |
| CN205227310U (en) * | 2015-12-28 | 2016-05-11 | 西安热工研究院有限公司 | Straight flow combustion ware with abrasionproof wind |
-
2015
- 2015-12-28 CN CN201510998045.7A patent/CN105444165B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048161U (en) * | 1989-03-06 | 1989-11-22 | 中国科学院力学研究所 | Anti-burn burner with air film |
| JPH08285231A (en) * | 1995-04-10 | 1996-11-01 | Babcock Hitachi Kk | Low nox pulverized coal burner and pulverized coal combustion device |
| US6467272B1 (en) * | 2001-06-25 | 2002-10-22 | Power Systems Mfg, Llc | Means for wear reduction in a gas turbine combustor |
| CN101403496A (en) * | 2007-08-29 | 2009-04-08 | 西门子公司 | Combined pulverized coal burner comprising an integrated pilot burner |
| CN201582810U (en) * | 2009-12-15 | 2010-09-15 | 中国航天空气动力技术研究院 | Dual-strengthening micro-oil ignition and flame stabilizer with oxygen combustion supporting |
| CN102393015A (en) * | 2011-05-27 | 2012-03-28 | 上海锅炉厂有限公司 | Dense-phase spiral-flow pulverized-coal burner |
| CN102980178A (en) * | 2011-09-05 | 2013-03-20 | 华北电力科学研究院有限责任公司 | Circulating fluidized bed boiler water wall air film wear-preventive device, circulating fluidized bed boiler water wall air film wear-preventive method and boiler |
| CN102444890A (en) * | 2011-12-26 | 2012-05-09 | 上海锅炉厂有限公司 | Micro-oil ignition burner |
| CN203731400U (en) * | 2014-03-10 | 2014-07-23 | 哈尔滨明远电力科技咨询有限公司 | Abrasion-proof wind device for preventing abrasion of pipe wall of circulating fluidized bed boiler |
| CN205227310U (en) * | 2015-12-28 | 2016-05-11 | 西安热工研究院有限公司 | Straight flow combustion ware with abrasionproof wind |
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| Publication number | Publication date |
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| CN105444165B (en) | 2017-12-01 |
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