CN202692029U - Outer secondary air adjusting structure of double air adjusting combustor W flame concurrent boiler - Google Patents
Outer secondary air adjusting structure of double air adjusting combustor W flame concurrent boiler Download PDFInfo
- Publication number
- CN202692029U CN202692029U CN 201220385777 CN201220385777U CN202692029U CN 202692029 U CN202692029 U CN 202692029U CN 201220385777 CN201220385777 CN 201220385777 CN 201220385777 U CN201220385777 U CN 201220385777U CN 202692029 U CN202692029 U CN 202692029U
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- secondary air
- boiler
- air adjusting
- flame
- boiler chamber
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Abstract
The utility model discloses an outer secondary air adjusting structure of a double air adjusting combustor W flame concurrent boiler. The outer secondary air adjusting structure of the double air adjusting combustor W flame concurrent boiler comprises a boiler chamber, combustors are arranged inside the boiler chamber, and outer secondary air angle of four side combustors arranged at two sides of the boiler chamber is 65 degrees. The outer secondary air angle of four central combustors arranged in the center of the boiler chamber is 55 degrees, and the outer secondary air angle of other combustors inside the boiler chamber is 60 degrees. The advantages of the outer secondary air adjusting structure of the double air adjusting combustor W flame concurrent boiler are firstly reflected in the raising of problems, through a large amount of research and a large number of calculations, applicants find that the cause is that requirements on combustion are different in different positions of the boiler chamber. Two sides of the boiler chamber are needed to control slag-bonding, small secondary air rotational flow is needed to be controlled, so that slag-bonding deterioration caused by pulverized coal airflow painting walls can be prevented. Secondary air rotational flow is needed to be amplified in the center of the boiler chamber, underswing ability of secondary air is weakened, so that flame in the center of the boiler chamber is moved up, and overtemperature of a middle water cold wall is prevented. The other combustors are arranged with 60 degrees according to good economical efficiency, so that economical efficiency of whole combustion of the boiler is guaranteed.
Description
Technical field
The utility model relates to a kind of two wind combustor W flame direct current cooker outer second air of transferring and adjusts structure, belongs to direct current cooker burning adjustment field.
Background technology
Two accent wind combustor W flame direct current cooker combustion systems are the opposed firing burning, and W flame boiler burning Main Problems is the contradiction between combustion stability, economy and the slagging scorification.There is the problem of the easy overtemperature of water-cooling wall in direct current cooker.The outer second air angle of two accent wind combustors has considerable influence to burning.The outer second air amount accounts for more than 65% of total blast volume.The outer second air angle strengthens, and the air-flow rigidity increases, and the undershoot ability is strong.The outer second air angle reduces, and the air-flow swirl strength strengthens, and the undershoot ability weakens.Two accent wind combustor W flame direct current cookers are owing to burning with cyclone mode, the boiler combustion better economy, but in order to increase combustion stability, lower hearth do not fire be with more, the easy slagging scorification of side wall and aileron, middle water-wall tube is large because of combustion intensity in addition, easily overtemperature.The operation of outer second air angle power plant is general by 60 ° of manufacturer's recommended values, although economy is guaranteed under 60 ° of conditions, boiler scaling and water-cooling wall overheating problem are outstanding.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of two wind combustor W flame direct current cooker outer second airs of transferring that can solve two accent wind combustor W flame direct current cooker combustion economizations, slagging scorification and water-cooling wall overtemperature contradiction and adjusts structure, can overcome the deficiencies in the prior art.
The technical solution of the utility model is: the outer second air method of adjustment of two accent wind combustor W flame direct current cookers is to be 65 ° with the outer second air angle by the burner of burner hearth two side areas; The outer second air angle that to lean on the burner of burner hearth central area is 55 °; The outer second air angle of all the other regional burners is 60 ° in the burner hearth.
Burner quantity by the burner hearth two side areas is four.
Burner quantity by the burner hearth central area is four.
The outer second air of two accent wind combustor W flame direct current cookers arranges structure, and it comprises burner hearth, is provided with burner in burner hearth, and the outer second air angle that is positioned at four side burners of burner hearth both sides is 65 °; The outer second air angle that is positioned at four central burner at burner hearth center is 55 °; The outer second air angle of all the other burners in the burner hearth is 60 °.
The quantity of all the other burners is 12-16.
Compared with the prior art, the beneficial effects of the utility model at first are embodied in the proposition of problem, through applicant's large quantity research and calculating, find that its reason is that the burner hearth diverse location has different requirements to burning.Slagging scorification will be controlled in the burner hearth both sides, should control less Secondary Air eddy flow, in case breeze airflow is whitewashed a wall, slagging scorification is worsened.The burner hearth center should make the Secondary Air eddy flow increase, and weakens Secondary Air undershoot ability, so that move on the flame at burner hearth center, prevents middle part water-cooling wall overtemperature.All the other burners are then pressed 60 ° of settings of better economy, to guarantee the economy of boiler integral combustion.
Contrast before and after the outer second air angle layout optimization:
| Project | Clinkering property | The water-cooling wall overtemperature | Combustion economization |
| The unified 60 ° of layouts of outer second air | Burner hearth four angle blade wall slagging scorification are serious | The easy overtemperature of middle part water-cooling wall | Because slagging scorification and overtemperature of tube wall, boiler must reduce load operation sometimes, combustion economization reduces |
| Outer second air is by existing mode preferred arrangement | Burner hearth is without pernicious slagging scorification phenomenon | Can avoid the water-cooling wall overheating problem | Boiler can be kept high load capacity stable operation, and combustion economization is secure |
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the burner structure schematic diagram.
The specific embodiment
Embodiment: as shown in Figure 1, at the front-back wall of burner hearth 1 burner being installed, 2 is that burner centered by the side burner, 3,4 is all the other burners among Fig. 1; Fig. 2 is the burner structure schematic diagram, and burner mainly comprises: outer second air 5, inner second air 6 and wind 7 of coal dust, and behind the understanding said structure, this pair transfers the outer second air method of adjustment of wind combustor W flame direct current cooker to be:
It is 65 ° that a will lean on the outer second air angle of the burner (side burner 2) of burner hearth two side areas, and wherein the burner quantity by the burner hearth two side areas is four;
It is 55 ° that b will lean on the outer second air angle of the burner (central burner 3) of burner hearth central area, and leaning on the burner quantity of burner hearth central area is four.
The outer second air angle of all the other regional burners (all the other burners 4) is 60 ° in the c burner hearth.
Such as Fig. 1, in burner hearth 1, be provided with 24 burners, the outer second air angle that is positioned at four side burners 2 of burner hearth 1 both sides is 65 °; The outer second air angle that is positioned at four central burner 3 at burner hearth 1 center is 55 °; The outer second air angle of all the other 16 burners 4 in the burner hearth 1 is 60 °.The quantity of all the other burners 4 is 12-16, specifically decides according to the size of burner hearth 1.
Claims (2)
1. two outer second airs of wind combustor W flame direct current cooker of transferring arrange structure, it comprises burner hearth (1), be provided with burner in burner hearth (1), it is characterized in that: the outer second air angle that is positioned at four side burners (2) of burner hearth (1) both sides is 65 °; The outer second air angle that is positioned at four central burner (3) at burner hearth (1) center is 55 °; The outer second air angle of all the other burners (4) in the burner hearth (1) is 60 °.
2. two outer second air of wind combustor W flame direct current cooker of transferring according to claim 1 arranges structure, and it is characterized in that: the quantity of all the other burners (4) is 12-16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220385777 CN202692029U (en) | 2012-08-06 | 2012-08-06 | Outer secondary air adjusting structure of double air adjusting combustor W flame concurrent boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220385777 CN202692029U (en) | 2012-08-06 | 2012-08-06 | Outer secondary air adjusting structure of double air adjusting combustor W flame concurrent boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202692029U true CN202692029U (en) | 2013-01-23 |
Family
ID=47547641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220385777 Withdrawn - After Issue CN202692029U (en) | 2012-08-06 | 2012-08-06 | Outer secondary air adjusting structure of double air adjusting combustor W flame concurrent boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202692029U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777893A (en) * | 2012-08-06 | 2012-11-14 | 贵州电力试验研究院 | External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner |
-
2012
- 2012-08-06 CN CN 201220385777 patent/CN202692029U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777893A (en) * | 2012-08-06 | 2012-11-14 | 贵州电力试验研究院 | External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner |
| CN102777893B (en) * | 2012-08-06 | 2014-12-10 | 贵州电力试验研究院 | External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130123 Effective date of abandoning: 20141210 |
|
| RGAV | Abandon patent right to avoid regrant |