CN203893165U - Inclined secondary air supply device - Google Patents
Inclined secondary air supply device Download PDFInfo
- Publication number
- CN203893165U CN203893165U CN201420277358.4U CN201420277358U CN203893165U CN 203893165 U CN203893165 U CN 203893165U CN 201420277358 U CN201420277358 U CN 201420277358U CN 203893165 U CN203893165 U CN 203893165U
- Authority
- CN
- China
- Prior art keywords
- secondary air
- burner hearth
- wall
- air channel
- feeding hole
- 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 - Lifetime
Links
- 239000003245 coal Substances 0.000 claims abstract description 42
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000008187 granular material Substances 0.000 abstract 2
- 208000010086 Hypertelorism Diseases 0.000 description 1
- 206010020771 Hypertelorism of orbit Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
Abstract
The utility model discloses an inclined secondary air supply device. The device comprises a plurality of upper secondary air pipes and a plurality of lower secondary air pipes, which are arranged on the front and rear walls of a hearth, respectively, wherein the lower secondary air pipes on the front and rear walls of the hearth are positioned on the two sides of corresponding coal feed openings in the width direction of the hearth, respectively. The device is characterized in that nozzles of the lower secondary air pipes on the front and rear walls of the hearth and on the two sides of the coal feed openings obliquely face corresponding middle coal feed openings. According to the device, a coal granule airflow and secondary air mixing effect can be effectively enhanced, the combustion of coal granules can be enhanced, and a combustion effect can be improved.
Description
Technical field
The utility model relates to a kind of tilting Secondary Air air-supply arrangement for CFBB.
Background technology
The Secondary Air of existing CFBB all adopts direct current wind to send into burner hearth, and owing to being subject to structural limitations, as shown in Figure 1, upper secondary air channel 8 and lower secondary air channel 9 are arranged in parallel in furnace chamber width at a certain distance with coal feeding hole 7; Secondary Air has certain distance with coal feeding hole 7 coal grain air-flow out after sending into burner hearth like this; if secondary air channel and coal feeding hole 7 are arranged hypertelorism; and it is more concentrated from coal feeding hole 7 coal grain out; it is undesirable that Secondary Air mixes situation with coal grain; can not in time oxygen be sent into around coal grain, thereby affect combustion efficiency.
Utility model content
The purpose of this utility model is for prior art above shortcomings, and a kind of tilting Secondary Air air-supply arrangement is provided, and it can effectively add the mixed effect of strong coal grain air-flow and Secondary Air, adds the burning of strong coal grain, improves combustion efficiency.
For arriving above-mentioned purpose, tilting Secondary Air air-supply arrangement of the present utility model, comprise and be located at respectively several upper secondary air channel and the several lower secondary air channel on wall after burner hearth front wall and burner hearth, several lower secondary air channel after burner hearth front wall and burner hearth on wall is positioned at each both sides of self-corresponding coal feeding hole in furnace chamber width, it is characterized in that: the coal feeding hole of correspondence in the middle of the sensing that the spout of the lower secondary air channel after each coal feeding hole both sides burner hearth front wall and burner hearth on wall all tilts.
The coal feeding hole of correspondence in the middle of the sensing that the spout of the lower secondary air channel after the utility model burner hearth front wall and burner hearth on wall all tilts, in the middle of making, flow field forms a circle of contact flow field, can strengthen mixing of lower Secondary Air and coal grain, add the burning of strong coal grain, improve combustion efficiency.
As further improvement of the utility model, the angle of inclination of the lower secondary air channel spout after burner hearth front wall and burner hearth on wall is 15 ~ 30 °; Can be set to different angles according to coal;
As further improvement of the utility model, the spout of the upper secondary air channel after burner hearth front wall and burner hearth on wall all be arranged in parallel with coal feeding hole; Be applicable to the moderate operating mode of the circle of contact moment of momentum that lower Secondary Air forms circle of contact flow field;
As further improvement of the utility model, the spout of the upper secondary air channel after burner hearth front wall and burner hearth on wall is in tilted layout with Secondary Air circle of contact opposite direction under corresponding coal feeding hole place; Be applicable to the circle of contact moment of momentum operating mode bigger than normal that lower Secondary Air forms circle of contact flow field;
In sum, the utility model can effectively add the mixed effect of strong coal grain air-flow and Secondary Air, adds the burning of strong coal grain, improves combustion efficiency.
Accompanying drawing explanation
Fig. 1 is the partial front elevation view of the Secondary Air air-supply arrangement of existing CFBB.
Fig. 2 is the top view of the utility model embodiment mono-.
Fig. 3 is the front view of burner hearth front wall one side in Fig. 2.
Fig. 4 is the top view of the utility model embodiment bis-.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment mono-
As shown in Figure 2 to Figure 3, this tilting Secondary Air air-supply arrangement, comprise and be located at respectively several upper secondary air channel 3 and the several lower secondary air channel 4 on wall 2 after burner hearth front wall 1 and burner hearth, several lower Secondary Air 4 pipes after burner hearth front wall 1 and burner hearth on wall 2 are positioned at each both sides of self-corresponding coal feeding hole 5 in furnace chamber width, the coal feeding hole 5 of correspondence in the middle of the sensing that the spout of the lower secondary air channel 4 after each coal feeding hole 5 both sides burner hearth front wall and 1 burner hearth on wall 2 all tilts, its angle of inclination is 15 ~ 30 °; The spout of the upper secondary air channel 3 after burner hearth front wall 1 and burner hearth on wall 2 all be arranged in parallel with coal feeding hole 5.
The coal feeding hole 5 of correspondence in the middle of the sensing that the spout of the lower secondary air channel 4 after the utility model burner hearth front wall 1 and burner hearth on wall 2 all tilts, in the middle of making, flow field forms a circle of contact flow field, can strengthen mixing of lower Secondary Air and coal grain, add the burning of strong coal grain, improve combustion efficiency; The circle of contact moment of momentum in this circle of contact flow field determines by coal and air quantity, and because its circle of contact moment of momentum is moderate, the spout of upper secondary air channel 3 all be arranged in parallel with coal feeding hole 5, reaches the best mixed effect of coal grain air-flow and Secondary Air.
Embodiment bis-
As shown in Figure 4, the difference of this embodiment and embodiment mono-is only, the spout of the upper secondary air channel 6 after burner hearth front wall 1 and burner hearth on wall 2 all with the lower secondary air channel 4 reversed dip settings of corresponding coal feeding hole 5 both sides separately, spout and reverse being obliquely installed of the formed circle of contact direction of lower secondary air channel 4 of also going up secondary air channel 6; Embodiment bis-is applicable to the circle of contact moment of momentum operating mode bigger than normal in circle of contact flow field, by upper secondary air channel 6, adjusts the circle of contact moment of momentum, makes it reach best mixed effect.
Claims (4)
1. a tilting Secondary Air air-supply arrangement, comprise and be located at respectively several upper secondary air channel and the several lower secondary air channel on wall after burner hearth front wall and burner hearth, several lower secondary air channel after burner hearth front wall and burner hearth on wall is positioned at each both sides of self-corresponding coal feeding hole in furnace chamber width, it is characterized in that: the coal feeding hole of correspondence in the middle of the sensing that the spout of the lower secondary air channel after each coal feeding hole both sides burner hearth front wall and burner hearth on wall all tilts.
2. tilting Secondary Air air-supply arrangement as claimed in claim 1, is characterized in that: the angle of inclination of the lower secondary air channel spout after burner hearth front wall and burner hearth on wall is 15 ~ 30 °.
3. tilting Secondary Air air-supply arrangement as claimed in claim 1 or 2, is characterized in that: the spout of the upper secondary air channel after burner hearth front wall and burner hearth on wall all be arranged in parallel with coal feeding hole.
4. tilting Secondary Air air-supply arrangement as claimed in claim 1 or 2, is characterized in that: the spout of the upper secondary air channel after burner hearth front wall and burner hearth on wall is obliquely installed with the circle of contact opposite direction of Secondary Air under corresponding coal feeding hole place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277358.4U CN203893165U (en) | 2014-05-28 | 2014-05-28 | Inclined secondary air supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277358.4U CN203893165U (en) | 2014-05-28 | 2014-05-28 | Inclined secondary air supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203893165U true CN203893165U (en) | 2014-10-22 |
Family
ID=51719567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420277358.4U Expired - Lifetime CN203893165U (en) | 2014-05-28 | 2014-05-28 | Inclined secondary air supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203893165U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668418A (en) * | 2016-11-04 | 2019-04-23 | 郑州莉迪亚医药科技有限公司 | A kind of Chinese medicine pharmacy's hot wind springs up formula herb powder drying unit |
-
2014
- 2014-05-28 CN CN201420277358.4U patent/CN203893165U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668418A (en) * | 2016-11-04 | 2019-04-23 | 郑州莉迪亚医药科技有限公司 | A kind of Chinese medicine pharmacy's hot wind springs up formula herb powder drying unit |
| CN109668418B (en) * | 2016-11-04 | 2021-01-22 | 韩俊国 | Hot-blast surging traditional chinese medicine powder drying device in traditional chinese medicine pharmacy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |