CN204213916U - Burner hearth air-distribution device - Google Patents
Burner hearth air-distribution device Download PDFInfo
- Publication number
- CN204213916U CN204213916U CN201420591830.1U CN201420591830U CN204213916U CN 204213916 U CN204213916 U CN 204213916U CN 201420591830 U CN201420591830 U CN 201420591830U CN 204213916 U CN204213916 U CN 204213916U
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- CN
- China
- Prior art keywords
- blast cap
- burner hearth
- blast
- cap
- distribution device
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- 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
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Abstract
The utility model discloses a kind of burner hearth air-distribution device, this burner hearth air-distribution device comprises the first blast cap, the second blast cap and the 3rd blast cap that are sequentially fixed on water-cooled distributor; Described first blast cap is higher than described second blast cap; Described second blast cap is higher than described 3rd blast cap; Described first blast cap and described second blast cap form first order step; Described second blast cap and described 3rd blast cap form second level step.In the utility model, due to the first blast cap, between the second blast cap and the 3rd blast cap be stairstepping arrange, that is, burner hearth air distribution plate is by adopting stairstepping cloth wind, therefore, fall toward lower when bulk particle encounters step, prevent carrying secretly of lump, facilitate the discharge of bulk lime-ash in burner hearth, reduce because of slag-drip opening blocking and burner hearth coking and the fault of blowing out banking fire.
Description
Technical field
The utility model relates to CFBB, is specifically related to a kind of burner hearth air-distribution device being applied in recirculating fluidized bed garbage fired boiler.
Background technology
The air-distribution device that current fluidized-bed combustion boiler (such as, bubbling bed or recirculating fluidized bed) adopts mainly contains two kinds of forms, i.e. funnel-cap type and porous plate formula.General porous plate formula air-distribution device is of little use, and most popular in domestic fluidized-bed combustion boiler be hood-type grid plate device.Funnel-cap type air-distribution device forms primarily of air compartment, air distribution plate, blast cap and thermal insulation layer.Enter stove hot blast and enter fluidization hood by all pressing air compartment, burner hearth air distribution plate region is sprayed at a high speed by blast cap aperture after blast cap flow regulator pieces, blast cap adapter, form uniform fluidized wind, thus reach the even fluidizing of burner hearth bed material and the object that the First air needed for burning is provided.
On burner hearth air distribution plate in the past, bed surface is mainly plane formula, intermediate arrangement slag-drip opening; Fluidization hood is mainly mushroom head and bell-jar two kinds.Cone type adopts monolithic construction design, and bell-jar relies on blast cap head own wt to be held on castable bed surface.Plane formula burner hearth air distribution plate due to component of refuse complicated, often have bulk materials or iron wire to pile up around slag-drip opening, be fluidized wind dynamic after, constantly pile up toward surrounding, form the fluidisation dead band that area more and more comes, affect the fluid effect of whole bed surface, easily cause slag-drip opening to block and burner hearth coking.
Utility model content
The utility model aims to provide one and prevents material from carrying secretly, the burner hearth air-distribution device of easy deslagging.
The utility model burner hearth air-distribution device, for fluidized-bed combustion boiler, comprises the first blast cap, the second blast cap and the 3rd blast cap that are sequentially fixed on water-cooled distributor; Described first blast cap is higher than described second blast cap; Described second blast cap is higher than described 3rd blast cap; Described first blast cap and described second blast cap form first order step; Described second blast cap and described 3rd blast cap form second level step.
Further, in above-mentioned burner hearth air-distribution device, described first blast cap is the first bell-type windshield; Described second blast cap is the second bell-type windshield; Described 3rd blast cap is wind cap.
Further, in above-mentioned burner hearth air-distribution device, described wind cap is provided with double-deck air outlet.
Further, in above-mentioned burner hearth air-distribution device, described first bell-type windshield and described second bell-type windshield all comprise: blast cap head and blast cap adapter, and described blast cap head is positioned over the upper end of described blast cap adapter, and described blast cap adapter is welded in described water-cooled distributor.
Further, in above-mentioned burner hearth air-distribution device, described blast cap adapter comprises blast pipe, top blind flange and air outlet; Described in the top that described top blind flange is arranged at described blast pipe, air outlet is opened in the top of described blast pipe.
In the utility model, due to the first blast cap, between the second blast cap and the 3rd blast cap be stairstepping arrange, that is, water-cooled distributor is by adopting stairstepping cloth wind, therefore, fall toward lower when bulk particle encounters step, prevent carrying secretly of lump, facilitate the discharge of bulk lime-ash in burner hearth, reduce because of slag-drip opening blocking and burner hearth coking and the fault of blowing out banking fire.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model burner hearth air-distribution device preferred embodiment;
Fig. 2 is in the utility model burner hearth air-distribution device preferred embodiment, the overall structure schematic diagram of the first bell-type windshield and the second bell-type windshield;
Fig. 3 is in the utility model burner hearth air-distribution device preferred embodiment, in the first bell-type windshield and the second bell-type windshield, and the structural representation of blast cap adapter;
Wherein
1 first bell-type windshield
2 second bell-type windshields
3 wind caps
4 blast cap heads
5 top blind flange
6 blast cap adapters
7 water-cooled distributors
8 air outlets
9 blast pipes
Detailed description of the invention
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in further detail preferred embodiment of the present utility model below in conjunction with the drawings and specific embodiments.
With reference to the structural representation that Fig. 1, Fig. 1 are the utility model burner hearth air-distribution device preferred embodiment.
The order that comprises this burner hearth air-distribution device is fixed on the first bell-type windshield 1 (corresponding first blast cap), the second bell-type windshield 2 (corresponding second blast cap) and the wind cap 3 (corresponding 3rd blast cap) on water-cooled distributor 7; First bell-type windshield 1 is higher than the second bell-type windshield 2; Second bell-type windshield 2 is higher than wind cap 3; First bell-type windshield 1 and the second bell-type windshield 2 form first order step; Second bell-type windshield 2 and wind cap 3 form second level step.Preferably, all blast caps are fixed by welding manner and water-cooled distributor 7.
As can be seen from Figure 1, it is that stairstepping is arranged that whole water-cooled distributor 7 pours into a mould the bed of material, and the bell-type windshield of differing heights, wind cap and castable form three layers of ladder, ladder bottom subtend burner hearth slag-drip opening.
In this embodiment, arrange owing to forming stairstepping between the first bell-type windshield 1, second bell-type windshield 2 and wind cap 3, water-cooled distributor 7 is by adopting stairstepping cloth wind, bulk particle falls toward lower when encountering step, prevent carrying secretly of lump, facilitate the discharge of bulk lime-ash in burner hearth, reduce because of slag-drip opening blocking and burner hearth coking and the fault of blowing out banking fire.
With reference to Fig. 2 and Fig. 3.Fig. 2 is in the utility model burner hearth air-distribution device preferred embodiment, the structural representation of the first bell-type windshield 1 and the second bell-type windshield 2; Fig. 3 is in the utility model burner hearth air-distribution device preferred embodiment, the structural representation of the blast cap adapter of the first bell-type windshield and the second bell-type windshield.
First bell-type windshield 1 and the second bell-type windshield 2 all comprise: blast cap head 4 and blast cap adapter 6, blast cap head 4 is positioned over the upper end of blast cap adapter 6, and blast cap adapter 6 is welded in water-cooled distributor 7.The blast cap head 4 of exposed bell-jar on the refractory insulating layer of water-cooled distributor 7 adopts easy replacing formula structural design, and blast cap adapter 6 top is embedded in the refractory insulating layer of water-cooled distributor 7.Blast cap adapter 6 and water-cooled distributor 7 are fixed by other modes such as welding.
Further, in the present embodiment, wind cap 3 is provided with double-deck air outlet, is fixed in the refractory insulating layer being embedded in water-cooled distributor 7 with water-cooled distributor 7 by welding manner.That is, wind cap 3 adopts double-deck relatively large air distribution, and refuse furnace slag-drip opening is that direction bulk slag charge is discharged, and design is comparatively large, so place's fluidisation is poor, increases air distribution herein, ensures better fluid effect, and smooth deslagging.
In the present embodiment, the blast cap head 4 of the first bell-type windshield 1 and the second bell-type windshield 2 adopts bell-jar to shelve structural design, is directly buckled in blast cap adapter 6 top.Blast cap adapter 6 forms primarily of blast pipe 9, top blind flange 5 and air outlet 8, and blast pipe 9 top is welded with top blind flange 5, avoids high-pressure blast directly to impact the blast cap head 4 on top; Blast pipe 9 top has air outlet 8, to be imported by air intake between blast cap head 4 and blast cap adapter 6 in annular passage.By this design, ensure that smooth and easy at the stable of run duration and deslagging of blast cap.
In the prior art, the blast pipe of common bell-type windshield is open type, and blast cap head relies on deadweight to overcome wind pressure resistance, and due to the double action of blast and momentum, blast cap head must heavierly could not be blown away, and therefore, relative processing cost is higher, uneconomical.And in the present embodiment, blast pipe 9 top of blast cap is welded with top blind flange 5, avoiding blast cap head is hit the effect of power, and deadweight only need overcome blast cap resistance, therefore significantly reduces the weight of blast cap head, and can ensure the safe operation of blast cap.Test data shows, and the present embodiment than conventional blast cap head weight saving 40%, thus cuts down finished cost, and increases economic efficiency.That is, the blast cap adapter in the present embodiment can protecting against shock.
Above a kind of burner hearth air-distribution device provided by the utility model is described in detail, apply specific embodiment herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications.In sum, this description should not be construed as restriction of the present utility model.
Claims (5)
1. a burner hearth air-distribution device, for fluidized-bed combustion boiler, is characterized in that, comprising:
Order is fixed on the first blast cap, the second blast cap and the 3rd blast cap on water-cooled distributor;
Described first blast cap is higher than described second blast cap;
Described second blast cap is higher than described 3rd blast cap;
Described first blast cap and described second blast cap form first order step;
Described second blast cap and described 3rd blast cap form second level step.
2. burner hearth air-distribution device according to claim 1, is characterized in that,
Described first blast cap is the first bell-type windshield;
Described second blast cap is the second bell-type windshield;
Described 3rd blast cap is wind cap.
3. burner hearth air-distribution device according to claim 2, is characterized in that,
Described wind cap is provided with double-deck air outlet.
4. burner hearth air-distribution device according to claim 3, is characterized in that,
Described first bell-type windshield and described second bell-type windshield all comprise: blast cap head and blast cap adapter, and described blast cap head is positioned over the upper end of described blast cap adapter, and described blast cap adapter is welded in described water-cooled distributor.
5. burner hearth air-distribution device according to claim 4, is characterized in that,
Described blast cap adapter comprises blast pipe, top blind flange and air outlet;
Described top blind flange is arranged at the top of described blast pipe
Described air outlet is opened in the top of described blast pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591830.1U CN204213916U (en) | 2014-10-13 | 2014-10-13 | Burner hearth air-distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591830.1U CN204213916U (en) | 2014-10-13 | 2014-10-13 | Burner hearth air-distribution device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204213916U true CN204213916U (en) | 2015-03-18 |
Family
ID=52982582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420591830.1U Expired - Fee Related CN204213916U (en) | 2014-10-13 | 2014-10-13 | Burner hearth air-distribution device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204213916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151810A (en) * | 2021-12-18 | 2022-03-08 | 无锡华光环保能源集团股份有限公司 | Air distribution and slag discharge structure for solid waste or biomass boiler |
-
2014
- 2014-10-13 CN CN201420591830.1U patent/CN204213916U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151810A (en) * | 2021-12-18 | 2022-03-08 | 无锡华光环保能源集团股份有限公司 | Air distribution and slag discharge structure for solid waste or biomass boiler |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20191013 |