CN204372915U - Fluidized-bed combustion boiler open type gas spiral coal supply system - Google Patents
Fluidized-bed combustion boiler open type gas spiral coal supply system Download PDFInfo
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- CN204372915U CN204372915U CN201420858075.9U CN201420858075U CN204372915U CN 204372915 U CN204372915 U CN 204372915U CN 201420858075 U CN201420858075 U CN 201420858075U CN 204372915 U CN204372915 U CN 204372915U
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- coal
- fluidized
- bed combustion
- combustion boiler
- flow guiding
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Abstract
Fluidized-bed combustion boiler open type gas spiral coal supply system.At present, the feeder of fluidized-bed combustion boiler mainly contains screw-type coal distributor, Scraper and closed belt feeder.Even if the sealing property of new installed equipment is better, through use after a while, because of reasons such as wearing and tearing, maintenance dismounting, sealing property can decrease, and Coal powder spray phenomenon more or less all can exist.A kind of fluidized-bed combustion boiler open type gas spiral coal supply system, its composition comprises: coal bunker (1), described coal bunker is connected with Gravimetric Coal Feeders (2), described Gravimetric Coal Feeders is connected with coal chute (3), described coal chute is connected with coal sliding tube (11), described coal sliding tube is connected with burner hearth (13) with coal spread wind case (12) by pipeline, and described coal chute has pipe (7), coal breakage bucket (5), defeated coal bellows (4) in flow guiding casing tube outer tube (6), flow guiding casing tube.The utility model is applied to fluidized-bed combustion boiler.
Description
technical field:
the utility model relates to a kind of title, coal is delivered into burner hearth by the gas spiral that open type gas spiral coal supply technology utilizes air force to be formed, mechanical coal feeder technology general at present can be replaced, device structure is simple, small investment, gas spiral coal supply technology can form negative pressure at coal dropping port place, coal dust is sucked burner hearth, eliminates mechanical coal feeder technology insurmountable production scene airborne dust problem.
background technology:
fluidized-bed combustion boiler is generally malleation in burner hearth in design, and neutral point is generally at furnace outlet.In order to extend coal dust and the time of staying of fugitive constituent in burner hearth, improve efficiency of combustion, the coal supply point of boiler coal feeding equipment on burner hearth is generally at the emulsion zone of lower furnace portion, therefore require that coal supply equipment will have good sealing property, otherwise at poorly sealed place's ejection coal dust, flue gas even flame, on-the-spot pollution will be caused.At present, the feeder of fluidized-bed combustion boiler mainly contains screw-type coal distributor, Scraper and closed belt feeder.These equipment mainly stop the ejection of malleation flue gas and coal dust in stove by the material envelope of material formation during work or the sealing of device housings, even if the sealing property of new installed equipment is better, through use after a while, because of reasons such as wearing and tearing, maintenance dismounting, sealing property can decrease, and Coal powder spray phenomenon more or less all can exist.Meanwhile, because the throughput direction of coal is contrary with flue gas emission direction, be easy to cause equipment chute blockage.In addition, the shell of these equipment is airtight, and inspection and maintenance inconvenience, equipment failure rate is high.
utility model content:
the purpose of this utility model is to provide a kind of fluidized-bed combustion boiler open type gas spiral coal supply system.
above-mentioned object is realized by following technical scheme:
a kind of fluidized-bed combustion boiler open type gas spiral coal supply system, its composition comprises: coal bunker, described coal bunker is connected with Gravimetric Coal Feeders, described Gravimetric Coal Feeders is connected with coal chute, described coal chute is connected with coal sliding tube, described coal sliding tube is connected with burner hearth with coal spread wind case by pipeline, and described coal chute has pipe, coal breakage bucket, defeated coal bellows in flow guiding casing tube outer tube, flow guiding casing tube.
described fluidized-bed combustion boiler open type gas spiral coal supply system, in described defeated coal bellows, coal breakage bucket is installed, described coal breakage bucket is connected with pipe in described flow guiding casing tube, described defeated coal bellows outer wall is connected with described flow guiding casing tube outer tube, in described flow guiding casing tube, pipe forms chuck with described flow guiding casing tube outer tube is defeated coal wind duct, has the distributing fin counterclockwise arranged in described defeated coal wind duct.
described fluidized-bed combustion boiler open type gas spiral coal supply system, described defeated coal bellows are connected with air distribution line, described air distribution line is connected with air distribution house steward, described air distribution house steward is connected with tubule, described tubule inserts along described coal breakage bucket center, described defeated coal bellows are the cylinder of hollow, and described coal breakage bucket is cone.
the beneficial effects of the utility model:
1. the coal in the utility model coal bunker falls into after coal chute from belt and forms Dual-Phrase Distribution of Gas olid, can be rotated counterclockwise by nature when Dual-Phrase Distribution of Gas olid not only in coal chute is fallen, defeated coal wind in flow guiding casing tube equally also can be rotated counterclockwise, and can accelerate the rotation of defeated coal wind in sleeve pipe by the fin counterclockwise arranged.Lower rotational gas flow is evenly distributed in pipe, and the active force moved downward is strong, not only can resist the malleation in stove, the vortex sucked can also be formed in coal spout porch, the coal dust kicked up by belt conveyer head of weighing sucks, and scene will there will be no coal dust to fly upward, and greatly improve production environment.
the defeated coal wind of the utility model forms wind cover, and under the effect of vortex, the large coal stream of concentration is at coal chute center, little to coal chute wearing and tearing, extends the service life of coal chute, avoids coal dust simultaneously and bonds on coal chute tube wall and cause chute blockage.
after the utility model transformation, coal chute extends, vertical tube segment length reaches about 5m, coal natural whereabouts hourly velocity in pipe greatly improves the coal fallen at a high speed and not only produces impact to ascending air, simultaneously owing to forming the piston effect moved downward when coal falls continuously, air is produced and downward pulls effect, weaken the strength of ascending air.4. the utility model structure is simple, small investment, operating cost are low, safeguard simple coal supply technology, not only can be used for the front coal feeding system of newly-built fluidized-bed combustion boiler, also can be used for the transformation of old device, can be applicable to the industry that cement, metallurgy etc. relate to solid particle material, powder carry simultaneously.
accompanying drawing illustrates:
accompanying drawing 1 is system architecture schematic diagram of the present utility model.
accompanying drawing 2 is defeated coal bellows air intake schematic diagrames.、
Detailed description of the invention
embodiment 1:
a kind of fluidized-bed combustion boiler open type gas spiral coal supply system, its composition comprises: coal bunker 1, described coal bunker is connected with Gravimetric Coal Feeders 2, described Gravimetric Coal Feeders is connected with coal chute 3, described coal chute is connected with coal sliding tube 11, described coal sliding tube is connected with burner hearth 13 with coal spread wind case 12 by pipeline, and described coal chute has pipe 7 in flow guiding casing tube outer tube 6, flow guiding casing tube, coal breakage bucket 5, defeated coal bellows 4.
embodiment 2:
fluidized-bed combustion boiler open type gas spiral coal supply system according to embodiment 1, in described defeated coal bellows, described coal breakage bucket is installed, described coal breakage bucket is connected with pipe in described flow guiding casing tube, described defeated coal bellows outer wall is connected with described flow guiding casing tube outer tube, in described flow guiding casing tube, pipe forms chuck with described flow guiding casing tube outer tube is defeated coal wind duct, has the distributing fin counterclockwise arranged in described defeated coal wind duct.
embodiment 3:
fluidized-bed combustion boiler open type gas spiral coal supply system according to embodiment 1 or 2, described defeated coal bellows are connected with air distribution line 8, described air distribution line is connected with air distribution house steward 9, described air distribution house steward is connected with tubule 10, described tubule inserts along described coal breakage bucket center, described defeated coal bellows are the cylinder of hollow, and described coal breakage bucket is cone.
Claims (3)
1. a fluidized-bed combustion boiler open type gas spiral coal supply system, its composition comprises: coal bunker, it is characterized in that: described coal bunker is connected with Gravimetric Coal Feeders, described Gravimetric Coal Feeders is connected with coal chute, described coal chute is connected with coal sliding tube, described coal sliding tube is connected with burner hearth with coal spread wind case by pipeline, and described coal chute has pipe, coal breakage bucket, defeated coal bellows in flow guiding casing tube outer tube, flow guiding casing tube.
2. fluidized-bed combustion boiler open type gas spiral coal supply system according to claim 1, it is characterized in that: in described defeated coal bellows, coal breakage bucket is installed, described coal breakage bucket is connected with pipe in described flow guiding casing tube, described defeated coal bellows outer wall is connected with described flow guiding casing tube outer tube, in described flow guiding casing tube, pipe forms chuck with described flow guiding casing tube outer tube is defeated coal wind duct, has the distributing fin counterclockwise arranged in described defeated coal wind duct.
3. fluidized-bed combustion boiler open type gas spiral coal supply system according to claim 1 and 2, it is characterized in that: described defeated coal bellows are connected with air distribution line, described air distribution line is connected with air distribution house steward, described air distribution house steward is connected with tubule, described tubule inserts along described coal breakage bucket center, described defeated coal bellows are the cylinder of hollow, and described coal breakage bucket is cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420858075.9U CN204372915U (en) | 2014-12-30 | 2014-12-30 | Fluidized-bed combustion boiler open type gas spiral coal supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420858075.9U CN204372915U (en) | 2014-12-30 | 2014-12-30 | Fluidized-bed combustion boiler open type gas spiral coal supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204372915U true CN204372915U (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420858075.9U Expired - Fee Related CN204372915U (en) | 2014-12-30 | 2014-12-30 | Fluidized-bed combustion boiler open type gas spiral coal supply system |
Country Status (1)
| Country | Link |
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| CN (1) | CN204372915U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091473A (en) * | 2016-12-27 | 2017-08-25 | 四川川锅锅炉有限责任公司 | A kind of CFBB high-speed rotational coal spread wind air inlet structure |
| CN107246624A (en) * | 2017-07-27 | 2017-10-13 | 韩明龙 | One kind fire prevention defeated coal device of Wind-Pressure Resistance |
-
2014
- 2014-12-30 CN CN201420858075.9U patent/CN204372915U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091473A (en) * | 2016-12-27 | 2017-08-25 | 四川川锅锅炉有限责任公司 | A kind of CFBB high-speed rotational coal spread wind air inlet structure |
| CN107246624A (en) * | 2017-07-27 | 2017-10-13 | 韩明龙 | One kind fire prevention defeated coal device of Wind-Pressure Resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20151230 |
|
| EXPY | Termination of patent right or utility model |