CN2620176Y - Bed surface jointed combine hood for circulation fluidized bed boiler - Google Patents
Bed surface jointed combine hood for circulation fluidized bed boiler Download PDFInfo
- Publication number
- CN2620176Y CN2620176Y CN 02245305 CN02245305U CN2620176Y CN 2620176 Y CN2620176 Y CN 2620176Y CN 02245305 CN02245305 CN 02245305 CN 02245305 U CN02245305 U CN 02245305U CN 2620176 Y CN2620176 Y CN 2620176Y
- Authority
- CN
- China
- Prior art keywords
- blast cap
- bed surface
- ventilator
- utility
- heads
- 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
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Abstract
The utility model provides a combined ventilator for circulating fluidized bed boiler. The utility model is characterized in that: the device is formed by connecting metal screw bolts and non-metallic ventilator heads, the non-metallic ventilator heads are made from special abrasion-resistant materials (such as corundum mullite casting material, corundum mullite abrasion-resistant plastic etc.); the metal screw bolts are welded on the fin of the bed surface of grid plate; the lower part of the non-metallic ventilator heads are provided with a connecting platform, and are connected with the grid plate of the bed surface directly; a high-temperature adhesive is adopted for bonding the junction surface between the non-metallic ventilator heads and the bed surface fin so as to prevent air leak. The utility model not only can meet the requirements of ventilator on stand fire and abrasion resistance, but also can reduce the production cost obviously.
Description
The utility model relates to a kind of by metal bolts and the direct-connected nonmetal special high-abrasive material combined type blast cap of bed surface.
CFBB is the clean combustion of coal boiler with bright prospects, and the oxygen supply of the circulation of material and stove internal combustion mainly is that the outlet of its air-supply is the blast cap that is arranged on the air distribution plate by the primary air fan air-supply in its stove.Because the residing position of blast cap is the emulsion zone in the burner hearth, its operating temperature is at 800 ℃-1000 ℃, and washing away of a large amount of high-temp solid materials arranged, therefore require blast cap must have high temperature resistant and very strong antiwear characteristic, the employed blast cap of CFBB all adopts special heat resisting steel (as ZG8Cr26Ni4Mn3N) monoblock cast at present, its cost is very expensive, but anti-wear performance does not make us very satisfied.
Task of the present utility model provides a kind of high temperature resistant and wear-resisting requirement that can satisfy CFBB to blast cap better, can reduce the blast cap device of manufacturing cost again.
Task of the present utility model is finished as follows: (water material feeding as corundum-mullite with special high-abrasive material, corundum-mullite corrosive-proof plastic material etc.) pour into nonmetal blast cap head, nonmetal blast cap head bottom has one to connect platform, the connecting hole of reserving during by cast is connected with the bolt on directly being welded on the bed surface fin, the built-up welding that simultaneously nonmetal blast cap head connects platform and bed surface fin faying face when reserving a pit and welding to hold bolt and fin, the faying face of nonmetal blast cap head and bed surface fin can adopt simultaneously that high-temperature adhesives are bonding to leak out avoiding during installation.
The utility model is compared with existing metal blast cap and is had the following advantages: 1, high temperature resistant and anti-wear performance is better.Because the scuff resistance of metal reduces with the rising of temperature, and the utility model exposes in actual use and needs wear-resisting nonmetal blast cap head part to be special wear-resistant castable in burner hearth to constitute, and remainder (comprising connecting bolt) all is embedded in watering in the material feeding of burner hearth bottom; Special wear-resistant castable is after reaching sintering state more than 800 ℃, and its scuff resistance reaches the highest.Therefore, it not only can satisfy the high temperature resistant and wear-resisting requirement of CFBB to blast cap fully, and its anti-wear performance is more stable than metal under 800 ℃ of-1000 ℃ of concrete operating modes; 2, cheap.Because the utility model metal connecting piece is few, only has bolt nut to be made of metal, and only need consider its resistance to elevated temperatures, need not to consider simultaneously wear-resisting requirement, thereby also reduced cost on material is selected for use; Simultaneously since special wear-resistant castable ton valency well below heating resisting metal, and its proportion also is significantly less than metal, the weight of same volume consumable material is less than half of metal blast cap, therefore the nonmetal blast cap head cost by its making greatly reduces.So the combined type blast cap is when having improved the abrasionproof performance of blast cap, cost also is starkly lower than existing heating resisting metal blast cap.3, replacing, easy for installation.Because its metal bolts only needs once welding repeatedly to use, only need back out nut during each later on the replacing and can change nonmetal blast cap head easily, there is not the welding job amount, greatly facilitate the replacing of blast cap.
Fig. 1 is a cutaway view of the present utility model, and Fig. 2 is a left view of the present utility model, and Fig. 3 is a vertical view of the present utility model.
1 is nonmetal blast cap head among the figure, and 2 for being welded in connecting screw rod and the nut on the bed surface fin, and 3 for reserving pit, and 4 is the bed surface fin, and 5 is the bed surface water screen tube.
With reference to accompanying drawing, the utility model can pour into nonmetal blast cap head with special wear-resistant castable earlier in force, gets final product after the oven dry.For improving the stability of wear-resistant castable, finished product can be carried out installing and using behind the sintering again.Elder generation is welded on screw rod on the bed surface fin during installation, with bolt the blast cap head is fixed on the bed surface wind distributing hole to get final product again.For preventing to leak out, the faying face of nonmetal blast cap head and bed surface fin can adopt high-temperature adhesives bonding simultaneously during installation.
In order to obtain different cloth wind effects, nonmetal blast cap head can pour into difformity as required, as 7 fonts, mushroom-shaped etc.
Claims (4)
1, a kind of blast cap that applies to CFBB is characterized in that described device is to be combined by the nonmetal blast cap head that metal bolts and special high-abrasive material (watering material feeding, corundum-mullite corrosive-proof plastic material etc. as corundum-mullite) are made.
2, blast cap according to claim 1 is characterized in that its metal screw directly is welded on the air distribution plate bed surface fin.
3, blast cap according to claim 1 is characterized in that nonmetal blast cap head bottom has one to connect platform and directly be connected with the bed surface air distribution plate by bolt.
4, blast cap according to claim 1 is characterized in that the faying face of nonmetal blast cap head and bed surface fin adopts high-temperature adhesives bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02245305 CN2620176Y (en) | 2002-12-23 | 2002-12-23 | Bed surface jointed combine hood for circulation fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02245305 CN2620176Y (en) | 2002-12-23 | 2002-12-23 | Bed surface jointed combine hood for circulation fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2620176Y true CN2620176Y (en) | 2004-06-09 |
Family
ID=34238196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02245305 Expired - Fee Related CN2620176Y (en) | 2002-12-23 | 2002-12-23 | Bed surface jointed combine hood for circulation fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2620176Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424071A (en) * | 2017-08-31 | 2019-03-05 | 上海宝冶集团有限公司 | The connection method of blast cap and wall |
-
2002
- 2002-12-23 CN CN 02245305 patent/CN2620176Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424071A (en) * | 2017-08-31 | 2019-03-05 | 上海宝冶集团有限公司 | The connection method of blast cap and wall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |