CN201844393U - Sealed air device with coal drop pipe - Google Patents
Sealed air device with coal drop pipe Download PDFInfo
- Publication number
- CN201844393U CN201844393U CN2010205896412U CN201020589641U CN201844393U CN 201844393 U CN201844393 U CN 201844393U CN 2010205896412 U CN2010205896412 U CN 2010205896412U CN 201020589641 U CN201020589641 U CN 201020589641U CN 201844393 U CN201844393 U CN 201844393U
- Authority
- CN
- China
- Prior art keywords
- coal
- pipe
- inclined tube
- spout
- sealing
- 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 - Fee Related
Links
Images
Landscapes
- Air Supply (AREA)
Abstract
The utility model provides a sealed air device with a coal drop pipe, which belongs to equipment of circulating fluidized bed boilers. The sealed air device comprises the coal drop pipe, an expansion joint and the like, wherein the expansion joint is mounted in the middle of the coal drop pipe; a coal drop inclined pipe is mounted at the lower end of the coal drop pipe and arranged with the coal drop pipe in a crossed manner; the left end of the coal drop inclined pipe is higher than the right end; a coal spraying air pipe is mounted at the left end of the coal drop inclined pipe; inner chambers of the coal drop pipe, the coal drop inclined pipe and the coal spraying pipe are communicated with one another; a first sealed air pipe and a second sealed air pipe are symmetrically mounted on the upper wall and the lower wall of the coal drop inclined pipe; and both of free ends of the first sealed air pipe and the second sealed air pipe incline to the left end of the coal drop inclined pipe. The sealed air device with the coal drop pipe has the advantages that since the first sealed air pipe and the second sealed air pipe are additionally arranged on the coal drop inclined pipe, and incline to the coal drop inclined pipe with angles smaller than 90 degrees, the wind pressure of sealed air entering the coal drop inclined pipe can prevent high-temperature and high-pressure fuel gas from flowing back, and the sealed air can improve the coal spraying effect and accordingly improve the boiler combustion efficiency.
Description
Technical field
The utility model relates to a kind of equipment of CFBB, refers to a kind of coal spout sealing wind apparatus especially.
Background technology
Along with the maximization of CFBB capacitance grade and the variation of boiler combustion, move on the rising of furnace pressure and the combustion zone, the temperature and the ash amount of burner hearth and coal supply system interface are increased sharply thereupon, cause a large amount of high temperature cigarette ashes to return to go here and there in the coal spout, the on-the-spot severe contamination of boiler applications, and it is aging serious to be subjected to high-temperature flue gas to influence the feeder belt.In order to address the above problem, designed existing coal spout sealing wind apparatus, as shown in Figure 1, comprise coal spout 1 ', expansion joint 2 ', coal breakage inclined tube 3 ', coal spread wind pipe joint 4 ' and sealing air pipe 5 ', the upper end of coal spout 1 ' is a coal feed point, expansion joint 2 ' is installed in coal spout 1 ' middle part, coal breakage inclined tube 3 ' is installed in coal spout 1 ' lower end and is to tilt arranged in a crossed manner with coal spout 1 ', the left end of coal breakage inclined tube 3 ' is higher than right-hand member, the left end of coal breakage inclined tube 3 ' is installed coal spread wind pipe joint 4 ', be socketed with sealing air pipe 5 ' on the coal spread wind pipe joint 4 ', one end of sealing air pipe 5 ' connects wind regime, the other end stretches into the inner chamber of coal breakage inclined tube 3 ', the right-hand member of coal breakage inclined tube 3 ' is connected to the burner hearth of boiler, coal spout 1 ', the pipeline of coal breakage inclined tube 3 ' and sealing air pipe 5 ' all communicates, coal cinder enters in the coal breakage inclined tube 3 ' through coal spout 1 ', the wind regime that sealing air pipe 5 ' by coal breakage inclined tube 3 ' left end connects, make wind be blown into the inner chamber of coal breakage inclined tube 3 ', the coal cinder that blows in the coal breakage inclined tube 3 ' slides to burner hearth, the sealing wind wind path of this coal spout sealing wind apparatus is arranged as the one-sided straight air intake of parallel coal breakage inclined tube 3 ', to return the cigarette sealing effectiveness poor for the coal that returns of boiler coal spout for this kind single admission or parallel air intake, and when high temperature cigarette ash temperature and flow increase, need to improve greatly sealing wind pressure and air quantity, need additionally to set up blower fan sometimes.
The utility model content
The purpose of this utility model is to provide a kind of coal spout sealing wind apparatus, and it can solve boiler coal spout HTHP cigarette ash and return string, can improve the efficiency of combustion of broadcasting coal effect and boiler.
To achieve these goals, technical solution of the present utility model is: a kind of coal spout sealing wind apparatus, comprise coal spout, expansion joint, coal breakage inclined tube and coal spread wind pipe, described expansion joint is installed in the middle part of coal spout, described coal breakage inclined tube is installed in the lower end of coal spout and is to tilt arranged in a crossed manner with coal spout, the left end of described coal breakage inclined tube is higher than right-hand member, the left end of described coal breakage inclined tube is installed the coal spread wind pipe joint, the coal spread wind pipe is installed on the described coal spread wind pipe joint, described coal spout, the inner cavity of pipe of coal breakage inclined tube and coal spread wind pipe communicates, wherein also comprise first, two sealing air pipes, described first, two sealing air pipe symmetries be installed on described coal breakage inclined tube on, on the lower wall, described first, two sealing air pipes tilt to intersect described first with described coal breakage inclined tube, the free end of two sealing air pipes all tilts to the left end of coal breakage inclined tube.
The utility model coal spout sealing wind apparatus wherein also comprises bellows, and described bellows are installed on the expansion joint upper end of coal spout.
The utility model coal spout sealing wind apparatus, high pressure positive blower of the free end of wherein said first and second sealing air pipe and boiler or secondary high-pressure blower fan or roots blower link to each other.
The utility model coal spout sealing wind apparatus, between wherein said expansion joint and the coal spout, between coal spout and the coal breakage inclined tube, between first and second sealing air pipe and the coal breakage inclined tube all by being welded to connect or being spirally connected by flange.
The utility model coal spout sealing wind apparatus, wherein said bellows are provided with the bellows pipe, and high pressure positive blower of described bellows pipe and boiler or secondary high-pressure blower fan or roots blower link to each other.
The utility model coal spout sealing wind apparatus, wherein said first and second sealing air pipe and described coal breakage inclined tube inclination intersecting angle are spent less than 90 greater than 0 degree.
After adopting such scheme, the utility model coal spout sealing wind apparatus is by installing first on the coal breakage inclined tube, two sealing air pipes, make sealing wind by first, two sealing air pipes enter the blast of coal breakage inclined tube can offset the interior malleation of boiler furnace with joint efforts, form the resistance that stops high temperature and high pressure flue gas to return string, blast makes a concerted effort the fuel of coal spout lower end is purged as early as possible simultaneously, coal spread wind power and blast make a concerted effort to form the effect of drawing of pushing in sealing wind junction, both solved coal spout chute blockage problem, improved and broadcast the coal effect, improved the efficiency of combustion of boiler again, in addition, first sealing air pipe perpendicular to the component of coal breakage inclined tube direction and second sealing air pipe at component perpendicular to the coal breakage inclined tube, formed and stop high temperature and high pressure flue gas to return the brattice of string.
Description of drawings
Fig. 1 is the structural representation of existing coal spout sealing wind apparatus;
Fig. 2 is the structural representation of the utility model coal spout sealing wind apparatus;
Fig. 3 is the structure stress analysis chart of the utility model coal spout sealing wind apparatus.
Below in conjunction with accompanying drawing, the utility model is described further by embodiment.
The specific embodiment
See also shown in Figure 2ly, the utility model coal spout sealing wind apparatus comprises coal spout 1, expansion joint 2, coal breakage inclined tube 3, coal spread wind pipe 4, first sealing air pipe 7, second sealing air pipe 8, bellows 9 and bellows pipe 10;
First sealing air pipe 7 and second sealing air pipe 8 are symmetrically welded the upper and lower wall in coal breakage inclined tube 3, first sealing air pipe 7, second sealing air pipe 8 all tilt to intersect with coal breakage inclined tube 3, the free end of first sealing air pipe 7 and second sealing air pipe 8 all tilts to the left end of coal breakage airduct 3, its angle that tilts to intersect is less than 90 degree greater than 0 degree, and best angle is 45 degree, and the free end of first sealing air pipe 7, second sealing air pipe 8 can link to each other with high pressure positive blower of boiler or secondary high-pressure blower fan or roots blower.Bellows 9 are installed in expansion joint 2 upper ends of coal spout 1, bellows 9 are provided with bellows pipe 10, bellows pipe 10 can link to each other with high pressure positive blower of boiler or secondary high-pressure blower fan or roots blower, it does not set up new equipment again under the situation that guarantees the normal operation of boiler combustion, and these wind regimes are easy to control, have played the effect of killing two birds with one stone.
In conjunction with shown in Figure 3, the utility model coal spout sealing wind apparatus is by installing first sealing air pipe 7 and second sealing air pipe 8 on coal breakage inclined tube 3, sealing wind is entered in the coal breakage inclined tube 3 by first sealing air pipe 7 and second sealing air pipe 8, blast in first sealing air pipe 7 is F1, blast in second sealing air pipe 8 is F2, the blast of F1 and F2 makes a concerted effort to be F3, F3 has offset the malleation in the boiler furnace, form the resistance that stops high temperature and high pressure flue gas to return string, simultaneously the blast F3 that makes a concerted effort purges the fuel of coal spout 1 lower end as early as possible, coal spread wind power and the blast F3 that makes a concerted effort forms the effect of drawing of pushing in sealing wind junction, both solved the chute blockage problem in the coal breakage inclined tube 3, simultaneously improved again 4 pairs of coal spread wind pipes enter into from coal spout 1 coal breakage inclined tube 3 coal cinder broadcast the coal effect, improved the efficiency of combustion of boiler again, in addition, first sealing air pipe 7 the component perpendicular to coal breakage inclined tube 3 directions be F5 and second sealing air pipe 8 at component F4 perpendicular to coal breakage inclined tube 3, formed and stop high temperature and high pressure flue gas to return the brattice of string.This kind bilateral sealing wind enters the 3 back dilatations of coal breakage inclined tube, dynamic pressure forms Resistance Line, static pressure forms resistance area, can prevent effectively that high temperature and high pressure flue gas from returning goes here and there to coal spout 1, at expansion joint 2 upper ends of coal spout 1 dress bellows 9, can further reduce the temperature at feeder belt place, can prevent that the feeder belt is aging.
The above embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineers and technicians in this area make the technical solution of the utility model all should fall in the definite protection domain of claims of the present utility model.
Claims (6)
1. a coal spout seals wind apparatus, comprise coal spout (1), expansion joint (2), coal breakage inclined tube (3) and coal spread wind pipe (4), described expansion joint (2) is installed in the middle part of coal spout (1), described coal breakage inclined tube (3) is installed in the lower end of coal spout (1) and is to tilt arranged in a crossed manner with coal spout (1), the left end of described coal breakage inclined tube (3) is higher than right-hand member, the left end of described coal breakage inclined tube (3) is installed coal spread wind pipe joint (6), described coal spread wind pipe joint (6) is gone up coal spread wind pipe (4) is installed, described coal spout (1), the inner cavity of pipe of coal breakage inclined tube (3) and coal spread wind pipe (4) communicates, it is characterized in that: also comprise first, two sealing air pipes (7,8), described first, two sealing air pipes (7,8) symmetry be installed on described coal breakage inclined tube (3) on, on the lower wall, described first, two sealing air pipes (7,8) tilt to intersect described first with described coal breakage inclined tube (3), the free end of two sealing air pipes (7,8) all tilts to the left end of coal breakage inclined tube (3).
2. coal spout sealing wind apparatus as claimed in claim 1 is characterized in that: also comprise bellows (9), described bellows (9) are installed on expansion joint (2) upper end of coal spout (1).
3. coal spout as claimed in claim 2 sealing wind apparatus is characterized in that: high pressure positive blower of the free end of described first and second sealing air pipe (7,8) and boiler or secondary high-pressure blower fan or roots blower link to each other.
4. coal spout sealing wind apparatus as claimed in claim 3, it is characterized in that: between described expansion joint (2) and the coal spout (1), between coal spout (1) and the coal breakage inclined tube (3), between first and second sealing air pipe (7,8) and the coal breakage inclined tube (3) all by being welded to connect or being spirally connected by flange.
5. coal spout as claimed in claim 4 sealing wind apparatus, it is characterized in that: described bellows (9) are provided with bellows pipe (10), and high pressure positive blower of described bellows pipe (10) and boiler or secondary high-pressure blower fan or roots blower link to each other.
6. coal spout sealing wind apparatus as claimed in claim 5 is characterized in that: described first and second sealing air pipe (7,8) is spent less than 90 greater than 0 degree with described coal breakage inclined tube (3) inclination intersecting angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205896412U CN201844393U (en) | 2010-11-02 | 2010-11-02 | Sealed air device with coal drop pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205896412U CN201844393U (en) | 2010-11-02 | 2010-11-02 | Sealed air device with coal drop pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201844393U true CN201844393U (en) | 2011-05-25 |
Family
ID=44039282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205896412U Expired - Fee Related CN201844393U (en) | 2010-11-02 | 2010-11-02 | Sealed air device with coal drop pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201844393U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984288A (en) * | 2010-11-02 | 2011-03-09 | 肥城白庄煤矿有限公司 | Seal air device of coal drop pipe |
| CN102563631A (en) * | 2012-02-16 | 2012-07-11 | 广东电网公司电力科学研究院 | Blanking port integrated blanking device for biomass fuel circulating fluidized bed boiler |
| CN104315504A (en) * | 2014-08-21 | 2015-01-28 | 中国华能集团清洁能源技术研究院有限公司 | A circulating fluidized bed boiler capable of inhibiting formation of a combustion high-temperature region and an inhibiting method |
| CN108592074A (en) * | 2018-04-08 | 2018-09-28 | 无锡华光锅炉股份有限公司 | A kind of coal spout structure |
-
2010
- 2010-11-02 CN CN2010205896412U patent/CN201844393U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984288A (en) * | 2010-11-02 | 2011-03-09 | 肥城白庄煤矿有限公司 | Seal air device of coal drop pipe |
| CN101984288B (en) * | 2010-11-02 | 2012-01-04 | 肥城白庄煤矿有限公司 | Seal air device of coal drop pipe |
| CN102563631A (en) * | 2012-02-16 | 2012-07-11 | 广东电网公司电力科学研究院 | Blanking port integrated blanking device for biomass fuel circulating fluidized bed boiler |
| CN104315504A (en) * | 2014-08-21 | 2015-01-28 | 中国华能集团清洁能源技术研究院有限公司 | A circulating fluidized bed boiler capable of inhibiting formation of a combustion high-temperature region and an inhibiting method |
| CN104315504B (en) * | 2014-08-21 | 2017-01-11 | 华能国际电力股份有限公司 | A circulating fluidized bed boiler capable of inhibiting formation of a combustion high-temperature region and an inhibiting method |
| CN108592074A (en) * | 2018-04-08 | 2018-09-28 | 无锡华光锅炉股份有限公司 | A kind of coal spout structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8511258B2 (en) | Coal boiler and coal boiler combustion method | |
| CN101984288B (en) | Seal air device of coal drop pipe | |
| CN201844393U (en) | Sealed air device with coal drop pipe | |
| CN105864748A (en) | Combined combustion system of chain boiler | |
| CN104990262A (en) | Biological particle hot-blast stove | |
| CN202598502U (en) | Coal blockage and smoke return resistant coal feeding device | |
| CN201344524Y (en) | Feeding device of anti-reflow biomass circulating fluidized bed boiler | |
| CN201836872U (en) | Water supply heater of boiler | |
| CN104776419A (en) | Coal-fired boiler high-temperature anti-corrosion device with self-cooling function | |
| CN106168376A (en) | A kind of twin furnace coal dust gasification low nitrogen burning Industrial Boiler | |
| CN103574594A (en) | Combustion heat supply system taking biomass as fuel | |
| CN106287687A (en) | A kind of burner flue gas recirculation boiler structure | |
| CN102042583A (en) | Feed water heater of boiler | |
| CN202328292U (en) | Ash handling equipment for secondary air bellow of coal-fired boiler and coal-fired boiler | |
| CN205065771U (en) | Directly blow high -efficient blast proof stove cigarette of formula coal pulverizer and mix fever device | |
| CN104748365A (en) | Multi-return-stroke gasification boiler of biomass fluidized bed | |
| CN210861103U (en) | Tiny-oil ignition combustion device | |
| CN2750195Y (en) | Centrally sealed air-transmitting-coal apparatus | |
| CN102095254A (en) | Organic heat carrier boiler of fluidized bed, with low cost, environment protection, energy saving and emission reduction | |
| CN205065706U (en) | A tubular injector set that is used for fluidized bed boiler coal supply mouth | |
| CN207112788U (en) | A kind of boiler revert system | |
| CN106152113B (en) | A kind of flue gas recirculation system of coal-powder boiler | |
| CN204730189U (en) | A kind of CFBB | |
| CN204593370U (en) | A kind of flue gas recirculation system of coal-powder boiler | |
| CN201475988U (en) | Fly ash recirculation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20111102 |