CN101696800B - Variable-section micro-oil combustion chamber - Google Patents
Variable-section micro-oil combustion chamber Download PDFInfo
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- CN101696800B CN101696800B CN2009101544011A CN200910154401A CN101696800B CN 101696800 B CN101696800 B CN 101696800B CN 2009101544011 A CN2009101544011 A CN 2009101544011A CN 200910154401 A CN200910154401 A CN 200910154401A CN 101696800 B CN101696800 B CN 101696800B
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- oil
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Abstract
The invention discloses a variable-section micro oil combustion chamber which has a basic section with a round cross section and a variable-section expansion section connected with the basic section. The rear two thirds of the expansion section are in a convex-concave equant square waveform structure and the rest one third is a smooth wall surface. The section of the variable-section expansion section transits to an oval section gradually and smoothly from a round section and than transits to a rectangular section smoothly. By changing the outlet of the oil combustion chamber into a rectangular outlet, the circumference length of the outlet is increased on the premise that the area of the outlet is unchanged, thereby increasing the contact area of oil flame and pulverized coal airflow; in addition, since the square waveform structure of the wall surface of the outlet increases the circumference length of the outlet, the contact area of the oil flame and the pulverized coal airflow is increased. The adopted square waveform structure can greatly enhance the turbulence heat and mass transfer process of the oil flame and the pulverized coal airflow and can accelerate the ignition process of the pulverized coal airflow; therefore, the variable-section micro oil combustion chamber has excellent adaptability to blind coal and meagre coal which have low Vdaf. The variable-section micro oil combustion chamber can be used as an oil combustion chamber in a micro oil start-up combustor with a rectangular nozzle.
Description
Technical field
The present invention relates to a kind of oil combustion chamber, especially relate to a kind of variable-section micro-oil combustion chamber.
Background technology
The tiny-oil ignition combustion combustion supporting technology is station boiler igniting, the combustion supporting technology that present China gives priority to.According to the difference of coal, its oil-saving effect generally can reach 60～98%.But it is in the application of low volatile coal, and effect is not ideal enough.Research in the past, focus nearly all concentrates in the optimization of the structural behaviour of burner and torch oil gun, atomized fuel is after oil gun ejection igniting in fact, spray into pulverized coal combustor after will in oil combustion chamber, fully burning and breeze airflow converges, by firing coal-dust after the strong heat exchange.Therefore, reasonably the oil combustion chamber structure also is the essential condition that guarantees that coal dust is in time lighted.
Summary of the invention
The object of the present invention is to provide a kind of variable-section micro-oil combustion chamber, the micro oil combustion chamber is used in the igniting with good fuel tolerance.
The technical scheme that the present invention solves its technical problem employing is:
The present invention comprises that successively cross section is circular basic segment, the variable cross-section expanding section that is connected with basic segment, and back 2/3rds walls of expanding section are the five equilibrium square wave-shaped configuration of convex-concave fluctuating, and remaining 1/3rd is a hydraulically smooth surface for close basic segment.
Its cross section of described variable cross-section expanding section by circle progressively smooth transition to ellipse again smooth transition to the square-section.
The beneficial effect that the present invention has is:
Original oil combustion chamber nozzle configuration adopts circle basically, and its disadvantage is that the contact area of oily flame and breeze airflow is little, and this is very disadvantageous for the little oil burner of rectangular jet.And after changing oil combustion chamber outlet into rectangle, under the constant prerequisite of area, increased the outlet circumferential length, thereby made the contact area increase of oily flame and breeze airflow; The square wave-shaped configuration that exports wall has in addition increased the outlet circumferential length greatly, therefore also just increased the contact area of oily flame and breeze airflow, moreover the existence of square wave-shaped configuration, turbulent flow heat, the matter transmittance process of oily flame and breeze airflow will be strengthened greatly, quicken the ignition process of breeze airflow, therefore good adaptability is also arranged for the lower anthracite of volatile matter, meager coal.
The present invention can be used as the oil combustion chamber in the little oil burner of rectangular jet
Description of drawings
Fig. 1 is vertical sectional structure schematic diagram of oil combustion chamber of the present invention.
Fig. 2 is that schematic diagram is looked on the left side of Fig. 1.
Fig. 3 is the schematic top plan view of Fig. 1.
Fig. 4 is the right view of spout.
Among the figure: 1, basic segment, 2, the variable cross-section expanding section, 2.1, square wave-shaped configuration, 2.2, spout.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the present invention comprises that successively cross section is circular basic segment 1, the variable cross-section expanding section 2 that is connected with basic segment, back 2/3rds walls of expanding section 2 are the square wave-shaped configuration 2.1 of convex-concave fluctuating five equilibrium, and remaining 1/3rd is a hydraulically smooth surface near basic segment.
Described variable cross-section expanding section 2 its cross sections by circle progressively smooth transition to ellipse again smooth transition to the square-section.
Situation during micro-oil combustion chamber real work of the present invention is as follows:
Claims (2)
1. variable-section micro-oil combustion chamber, it is characterized in that: comprise that successively cross section is circular basic segment (1), the variable cross-section expanding section (2) that is connected with basic segment, the square wave-shaped configuration (2.1) that back 2/3rds walls of expanding section (2) are convex-concave fluctuating five equilibrium, remaining 1/3rd is a hydraulically smooth surface near basic segment.
2. a kind of variable-section micro-oil combustion chamber according to claim 1 is characterized in that: its cross section of described variable cross-section expanding section (2) by circle progressively smooth transition to ellipse again smooth transition to the square-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101544011A CN101696800B (en) | 2009-10-22 | 2009-10-22 | Variable-section micro-oil combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101544011A CN101696800B (en) | 2009-10-22 | 2009-10-22 | Variable-section micro-oil combustion chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101696800A CN101696800A (en) | 2010-04-21 |
| CN101696800B true CN101696800B (en) | 2011-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101544011A Expired - Fee Related CN101696800B (en) | 2009-10-22 | 2009-10-22 | Variable-section micro-oil combustion chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101696800B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5299929A (en) * | 1993-02-26 | 1994-04-05 | The Boc Group, Inc. | Fuel burner apparatus and method employing divergent flow nozzle |
| CN2630658Y (en) * | 2003-07-22 | 2004-08-04 | 杭州浙大天元科技有限公司 | Microoil cold-ignition and superlow-load stable-burning combustor |
| CN101012928A (en) * | 2007-02-07 | 2007-08-08 | 鞠胤红 | Smokeless coal gasification micro grease gun igniting pulverized coal burner |
| CN101135445A (en) * | 2007-10-09 | 2008-03-05 | 中国计量学院 | Micro-oil ignition coal powder combusting device |
| CN101210675A (en) * | 2007-12-25 | 2008-07-02 | 杭州意能节能技术有限公司 | Micro-oil ignition rotational flow pulverized coal burner with center wind |
| CN101294705A (en) * | 2007-04-25 | 2008-10-29 | 烟台龙源电力技术股份有限公司 | Highly effective internal combustion type pulverized coal burner with ignition source |
| CN201507923U (en) * | 2009-10-22 | 2010-06-16 | 中国计量学院 | Variable cross-section tiny-oil combustion chamber |
-
2009
- 2009-10-22 CN CN2009101544011A patent/CN101696800B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5299929A (en) * | 1993-02-26 | 1994-04-05 | The Boc Group, Inc. | Fuel burner apparatus and method employing divergent flow nozzle |
| CN2630658Y (en) * | 2003-07-22 | 2004-08-04 | 杭州浙大天元科技有限公司 | Microoil cold-ignition and superlow-load stable-burning combustor |
| CN101012928A (en) * | 2007-02-07 | 2007-08-08 | 鞠胤红 | Smokeless coal gasification micro grease gun igniting pulverized coal burner |
| CN101294705A (en) * | 2007-04-25 | 2008-10-29 | 烟台龙源电力技术股份有限公司 | Highly effective internal combustion type pulverized coal burner with ignition source |
| CN101135445A (en) * | 2007-10-09 | 2008-03-05 | 中国计量学院 | Micro-oil ignition coal powder combusting device |
| CN101210675A (en) * | 2007-12-25 | 2008-07-02 | 杭州意能节能技术有限公司 | Micro-oil ignition rotational flow pulverized coal burner with center wind |
| CN201507923U (en) * | 2009-10-22 | 2010-06-16 | 中国计量学院 | Variable cross-section tiny-oil combustion chamber |
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| Publication number | Publication date |
|---|---|
| CN101696800A (en) | 2010-04-21 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20111022 |