CN202501456U - Pulverized coal boiler dual-channel overfire air or secondary air combustor device - Google Patents
Pulverized coal boiler dual-channel overfire air or secondary air combustor device Download PDFInfo
- Publication number
- CN202501456U CN202501456U CN2012200792153U CN201220079215U CN202501456U CN 202501456 U CN202501456 U CN 202501456U CN 2012200792153 U CN2012200792153 U CN 2012200792153U CN 201220079215 U CN201220079215 U CN 201220079215U CN 202501456 U CN202501456 U CN 202501456U
- Authority
- CN
- China
- Prior art keywords
- air
- channel
- binary channels
- door
- air door
- 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 title claims abstract description 10
- 239000007921 spray Substances 0.000 claims description 7
- 238000005493 welding type Methods 0.000 abstract 1
- 239000002817 coal dust Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Abstract
The utility model discloses a pulverized coal boiler dual-channel overfire air or secondary air combustor device. By using existing devices, the air dynamic field structure in the boiler will be influenced, so that low boiler efficiency will be generated. The device of the utility model comprises a dual-channel nozzle, a dual-channel air duct, a dual-channel division plate, a two-door linkage air door, air door baffles, and a single-channel air duct. The dual-channel nozzle is connected with one end of the dual-channel air duct, wherein the connection mode may be the welding type or the swing type. The other end of the dual-channel air duct is connected with one end of the two-door linkage air door. The two air door baffles are arranged in the two-door linkage air door, wherein the two air door baffles are rotated synchronously around a rotation axis and correspond to one channel of the dual-channel air duct separately. The other end of the two-door linkage air door is connected with one end of the single-channel air duct. The other end of the single-channel air duct is connected with an air pipeline. According to the utility model, the intensive mixing of the pulverized coal and the air is facilitated, so the pulverized coal will be burnt out more fully. Moreover, the advantage of simple structure is realized, and when the air quantity of the combustor is reduced, the device of the utility model can be used to ensure that the air speed at the outlet of the combustor will not be dropped linearly.
Description
Technical field
The utility model belongs to power equipment systems technology field, relates in particular to a kind of pulverized-coal fired boiler binary channels after-flame wind or secondary wind burner apparatus.
Background technology
Secondary wind is arranged in pulverized-coal fired boiler, be used to provide coal dust firing necessary air; In the pulverized-coal fired boiler of employing air classification low NOx combusting technology separated secondary wind is arranged also, i.e. after-flame wind.When boiler load variation or low NOx combustion adjustment, secondary wind and/or after-flame wind air quantity can corresponding adjustment.Present secondary wind, after-flame wind are the single channel structure; When air quantity changes; The corresponding linear change of burner outlet wind speed meeting when wind speed decreased is big, can have influence on the Furnace Aerodynamic Field structure; Thereby influence boiler efficiency, NOx generation concentration, boiler operating parameter etc., even cause problems such as slagging scorification, high temperature corrosion.
Summary of the invention
The purpose of the utility model is the deficiency to prior art, and a kind of pulverized-coal fired boiler binary channels after-flame wind or secondary wind burner apparatus are provided.
The utility model solves the technical scheme that its technical problem adopted:
The utility model device comprises double-channel spray nozzle, binary channels air channel, binary channels dividing plate, two-door interlock air door, air door baffle plate, single channel air channel; Double-channel spray nozzle is connected with binary channels air channel one end, and connected mode can be welded type or swing type; The binary channels air channel other end is connected with an end of two-door interlock air door; Be provided with 2 air door baffle plates in the two-door interlock air door, 2 air door baffle plates moving axis that rotates rotates synchronously, and the passage in corresponding binary channels air channel respectively; The other end of two-door interlock air door is connected with an end in single channel air channel; The total air channel of another termination in single channel air channel;
Said binary channels air channel is made up of conventional passage dress binary channels dividing plate, and 2 channel cross-sectional flow areas that separate binary channels air channel, back are than being 2:3～3:2.
The axis at said 2 air door baffle plate turning cylinders place and the distance L in binary channels air channel, promptly the vertical range of axis and binary channels dividing plate end points is confirmed by air door baffle plate designed inclination angle α and binary channels air channel circulation area ratio; Air door baffle plate designed inclination angle refer to the air door baffle plate rotate to the binary channels dividing plate over against the time angle, air door baffle plate designed inclination angle α is 30 °～60 °.
The utility model beneficial effect is following:
When regulating after-flame wind or secondary wind air quantity; Non-impartial adjusting of the air quantity in binary channels air channel, one of them passage keeps higher wind speed, thereby guarantees that after-flame wind or secondary wind have better penetration power; Promote that coal dust fully mixes with air, make more fully after-flame of coal dust.The utility model apparatus structure is simple, does not change existing operation mode, when reducing the burner air quantity, can guarantee that the burner outlet wind speed can linearly not descend, and keep higher wind speed.
Description of drawings
Fig. 1 is the structural principle sketch map of the utility model.
Among the figure: double-channel spray nozzle 1, binary channels air channel 2, binary channels dividing plate 3, two-door interlock air door 4, air door baffle plate 5, single channel air channel 6.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 1, the utility model device comprises double-channel spray nozzle 1, binary channels air channel 2, binary channels dividing plate 3, two-door interlock air door 4, air door baffle plate 5, single channel air channel 6; Double-channel spray nozzle 1 is connected with binary channels air channel 2 one ends, and connected mode can be welded type or swing type; Binary channels air channel 2 other ends are connected with an end of two-door interlock air door 4; Be provided with 5,2 air door baffle plates 5 of 2 air door baffle plates moving axis that rotates in the two-door interlock air door 4 and rotate synchronously, and the passage in corresponding binary channels air channel 2 respectively; The other end of two-door interlock air door 4 is connected with an end in single channel air channel 6; The total air channel of another termination in single channel air channel 6;
Said binary channels air channel 2 is made up of conventional passage dress binary channels dividing plate 3, and 2 channel cross-sectional flow areas that separate binary channels air channel, back 2 are than being 2:3～3:2.
The axis at said 2 air door baffle plate 5 turning cylinders place and the distance L in binary channels air channel 2, promptly the vertical range of axis and binary channels dividing plate 3 end points is confirmed by air door baffle plate designed inclination angle α and binary channels air channel circulation area ratio; Air door baffle plate designed inclination angle α refer to air door baffle plate 5 rotate to binary channels dividing plate 3 over against the time angle, air door baffle plate designed inclination angle α is 30 °～60 °.
When air door baffle plate standard-sized sheet, the binary channels air channel evenly ventilates; When turning down baffle opening gradually, only reduce the air quantity of a passage in the binary channels air channel, the wind speed of another passage is constant basically even higher wind speed arranged.When the air door baffle opening turns down to air door baffle plate designed inclination angle position, or when surpassing air door baffle plate designed inclination angle position, have only a passage to ventilate basically, another passage has only a small amount of wind with cooling jet.
When the utility model is used for after-flame wind, then be the binary channels combustion exhausted wind apparatus; When being used for secondary wind, then be the binary channels overfire air device.
Claims (1)
1. pulverized-coal fired boiler binary channels after-flame wind or secondary wind burner apparatus is characterized in that: comprise double-channel spray nozzle, binary channels air channel, binary channels dividing plate, two-door interlock air door, air door baffle plate, single channel air channel; Double-channel spray nozzle is connected with binary channels air channel one end, and connected mode can be welded type or swing type; The binary channels air channel other end is connected with an end of two-door interlock air door; Be provided with 2 air door baffle plates in the two-door interlock air door, 2 air door baffle plates moving axis that rotates rotates synchronously, and the passage in corresponding binary channels air channel respectively; The other end of two-door interlock air door is connected with an end in single channel air channel; The total air channel of another termination in single channel air channel;
Said binary channels air channel is made up of conventional passage dress binary channels dividing plate, and 2 channel cross-sectional flow areas that separate binary channels air channel, back are than being 2:3～3:2;
The axis at said 2 air door baffle plate turning cylinders place and the distance L in binary channels air channel, promptly the vertical range of axis and binary channels dividing plate end points is confirmed by air door baffle plate designed inclination angle α and binary channels air channel circulation area ratio; Air door baffle plate designed inclination angle refer to the air door baffle plate rotate to the binary channels dividing plate over against the time angle, air door baffle plate designed inclination angle α is 30 °～60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200792153U CN202501456U (en) | 2012-03-06 | 2012-03-06 | Pulverized coal boiler dual-channel overfire air or secondary air combustor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200792153U CN202501456U (en) | 2012-03-06 | 2012-03-06 | Pulverized coal boiler dual-channel overfire air or secondary air combustor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202501456U true CN202501456U (en) | 2012-10-24 |
Family
ID=47038069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200792153U Expired - Lifetime CN202501456U (en) | 2012-03-06 | 2012-03-06 | Pulverized coal boiler dual-channel overfire air or secondary air combustor device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202501456U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563638A (en) * | 2012-03-06 | 2012-07-11 | 浙江大学 | Pulverized-fuel boiler two-channel over-fire air or secondary air combustor device |
| CN103953919A (en) * | 2014-04-27 | 2014-07-30 | 大唐(北京)能源管理有限公司 | Burning-out air and secondary air adjusting device of pulverized coal boiler |
| CN105605563A (en) * | 2016-01-25 | 2016-05-25 | 中国大唐集团科学技术研究院有限公司华东分公司 | Water wall high-temperature corrosion monitoring and control device and method for wall type tangentially-fired boiler |
| CN110966590A (en) * | 2019-12-04 | 2020-04-07 | 国网浙江省电力有限公司电力科学研究院 | Primary and secondary air coupling jet system and operation method thereof |
-
2012
- 2012-03-06 CN CN2012200792153U patent/CN202501456U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563638A (en) * | 2012-03-06 | 2012-07-11 | 浙江大学 | Pulverized-fuel boiler two-channel over-fire air or secondary air combustor device |
| CN102563638B (en) * | 2012-03-06 | 2014-01-29 | 浙江大学 | Pulverized-fuel boiler two-channel over-fire air or secondary air combustor device |
| CN103953919A (en) * | 2014-04-27 | 2014-07-30 | 大唐(北京)能源管理有限公司 | Burning-out air and secondary air adjusting device of pulverized coal boiler |
| CN105605563A (en) * | 2016-01-25 | 2016-05-25 | 中国大唐集团科学技术研究院有限公司华东分公司 | Water wall high-temperature corrosion monitoring and control device and method for wall type tangentially-fired boiler |
| CN110966590A (en) * | 2019-12-04 | 2020-04-07 | 国网浙江省电力有限公司电力科学研究院 | Primary and secondary air coupling jet system and operation method thereof |
| CN110966590B (en) * | 2019-12-04 | 2021-08-03 | 国网浙江省电力有限公司电力科学研究院 | Primary and secondary air coupling jet system and operation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102563638B (en) | Pulverized-fuel boiler two-channel over-fire air or secondary air combustor device | |
| CN102913898B (en) | Over-fire air distribution manner in front and back wall opposed firing boiler | |
| WO2015103831A1 (en) | Fuel/gas-saving ignition and stable-combustion low-nitrogen swirling pulverized coal combustor | |
| CN202501456U (en) | Pulverized coal boiler dual-channel overfire air or secondary air combustor device | |
| CN102679337B (en) | Cyclone combustor with adjustable flame shape and mixing strength | |
| CN204165044U (en) | The premixed coal dust low NO of a kind of adverse current | |
| CN101363625B (en) | Large speed ratio centrally powder-feeding cyclone burner for pulverized coal | |
| CN103672867A (en) | Efficient low-pollution W-shaped flame boiler OFA (over fire air) device and method | |
| CN104180368A (en) | Medium-and-low temperature hot fume powder feeding type coal powder combustion device and combustion process thereof | |
| CN103953919A (en) | Burning-out air and secondary air adjusting device of pulverized coal boiler | |
| CN103672883A (en) | Grid type swirl burner | |
| CN202647746U (en) | Real-time adjustable novel swirl burner | |
| CN202132971U (en) | Secondary air arrangement structure of W flame boiler | |
| CN108613184B (en) | Combustor capable of adjusting load and working method | |
| CN112902154A (en) | Over-fire air system with controllable steam temperature deviation and CO concentration at two sides of opposed firing boiler | |
| CN203797692U (en) | Composite over-fire air system for corner-tangential boiler | |
| CN203036634U (en) | Fractional combustion low-nitrogen oxide rotational flow burner | |
| CN101806450B (en) | Over-fire-air device for different load pulverized-coal fired boilers | |
| CN208886755U (en) | A kind of adherent wind apparatus of adjustable relay-type | |
| CN108167823B (en) | Device with axially adjustable blades for preventing slag formation of burner nozzle | |
| CN203718767U (en) | Oil/gas saving ignition stable-combustion low-nitrogen swirl pulverized coal burner | |
| CN210035475U (en) | Boiler burner | |
| CN204756935U (en) | Two sections mixed whirl flame dishes | |
| CN212456847U (en) | Single gas staged burner | |
| CN110645569B (en) | Combustion system and combustion method for improving flexibility of W-flame boiler coal types |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121024 Effective date of abandoning: 20140129 |
|
| RGAV | Abandon patent right to avoid regrant |