CN202092119U - Metal abrasion resistance device for hearth of circulating fluidized bed boiler - Google Patents
Metal abrasion resistance device for hearth of circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN202092119U CN202092119U CN2011201409366U CN201120140936U CN202092119U CN 202092119 U CN202092119 U CN 202092119U CN 2011201409366 U CN2011201409366 U CN 2011201409366U CN 201120140936 U CN201120140936 U CN 201120140936U CN 202092119 U CN202092119 U CN 202092119U
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- China
- Prior art keywords
- fluidized bed
- circulating fluidized
- water
- abrasion resistance
- abrasive disc
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Abstract
The utility model relates to a metal abrasion resistance device for a hearth of a circulating fluidized bed boiler, which effectively resolves the problem that an existing water-cooling wall abrasion resistance device of the circulating fluidized bed boiler is complex in structure, high in maintenance cost, easy to damage and capable of affecting heat absorption of a heating surface of the boiler. The metal abrasion resistance device comprises fins and water-cooling wall pipes, wherein fins are arranged between every two water-cooling wall pipes, abrasion resistance discs are welded on the inner walls of the fins and the water-cooling wall pipes, and included angles of the abrasion resistance discs and the water-cooling wall pipes in the axial direction are 30 to 50 degrees. The metal abrasion resistance device for the hearth of the circulating fluidized bed boiler is unique in structure, convenient to use, good in effect and innovative.
Description
Technical field
The utility model relates to shoe, particularly a kind of boiler hearth of circulating fluidized bed metal shoe.
Background technology
At present, it is nonmetal abrasionproof boom device more widely that the circulating fluidized bed boiler water-cooling wall shoe is used, it mainly pricks nail by stainless steel, the netting of stainless steel steel, fire-resistant abrasion-proof high temperature waters material feeding, around burner hearth, build composition by laying bricks or stones, when adherent material falls in the burner hearth, play and slow down adherent material decrease speed, thereby reach the purpose of slowing down the water-cooling wall rate of wear along differing heights.Because nonmetal abrasionproof beam is a cost to cover a part of furnace wall cooling surface, therefore, can influence the boiler normal output; Simultaneously, sturdy and durable in order to guarantee nonmetal abrasionproof beam, increase nonmetal abrasionproof beam section thickness.Make nonmetal abrasionproof beam root water screen tube be subjected to turbulent flow influence again and cause the concentrated wear aggravation.
Summary of the invention
At above-mentioned situation, for overcoming the defective of prior art, the purpose of the utility model just provides a kind of boiler hearth of circulating fluidized bed metal shoe, can effectively solve existing circulating fluidized bed boiler water-cooling wall shoe structure trouble, maintenance cost height, fragile, the problem that influences the boiler heating surface heat absorption.
The technical scheme of its solution is, comprises fin and water screen tube, between two water screen tubes fin arranged, and is welded with anti-abrasive disc on fin and the water screen tube madial wall, and anti-abrasive disc axially becomes 30 ° of-50 ° of angles with water screen tube.
The utility model structure uniqueness, easy to use, effective is the innovation on the circulating fluidized bed boiler water-cooling wall shoe.
Description of drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is a vertical view of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
Provided by Fig. 1, Fig. 2, the utility model comprises fin and water screen tube, between two water screen tubes 2 fin 1 is arranged, and is welded with anti-abrasive disc 4 on fin 1 and water screen tube 2 madial walls, and anti-abrasive disc 4 axially becomes 30 ° of-50 ° of angles with water screen tube 2.
In order to guarantee result of use, link together through fin, water-cooled tube wall attachment weld 5 between said fin 1 and water screen tube 2 tube walls.
Between said anti-abrasive disc 4 and fin 1, water screen tube 2 tube walls attachment weld 3 is arranged.
The spill sheet of said anti-abrasive disc 4 for making by the antiwear heat resisting stainless steel.
When the utility model uses, adherent material drops to certain altitude in burner hearth, run into anti-abrasive disc 4, because anti-abrasive disc 4 is angle of declination with water screen tube 2 and welds together, the material decrease speed is slowed down, and continues to fall along anti-abrasive disc 4 inclination angles, the angle of declination arrangement has reduced material and has descended and to carry air-flow and burner hearth ascending air in interactional turbulent region, anti-abrasive disc 4 tops, material time of staying in the turbulent region is shorter, like this, has reduced the wearing and tearing of water-cooled tube wall root.
When hot material in the boiler furnace when water screen tube 2 tube walls fall, meeting and fin 1, water screen tube 2 tube walls rub, make the two wearing and tearing attenuate, wherein the material decrease speed has the greatest impact to the two rate of depreciation, the high more wearing and tearing of speed are fast more, anti-abrasive disc 4 tops are under the interaction of descender materials flow and the materials flow of burner hearth ascender, reduce speed now before making material near anti-abrasive disc 4, after dropping on the anti-abrasive disc 4, because anti-abrasive disc 4 is a spill, and away from water-cooled tube wall point, the position is lower, material falls along the gradient, material is difficult for concentrating on anti-abrasive disc 4 and tube wall weld, therefore, anti-abrasive disc 4 top root water screen tubes are not easy to wear, the heat that material carries also can make anti-abrasive disc 4 temperature raise, in order to prevent that abrasive disc 4 is at high temperature, operate as normal in the high concentration material environment, anti-abrasive disc 4 material selection heat-resistant antifriction stainless steels are made, anti-abrasive disc 4 and fin 1, water screen tube 2 welds together, can pass to the working medium that flows in the pipe to heat again, can play anti-abrasive disc 4 effects of cooling, prevent that abrasive disc 4 high temperature deformations and abrasion-resistance from descending, material is slowed down decrease speed by anti-abrasive disc 4, kick up under the perturbation action of burner hearth ascender materials flow, it is more abundant that it is contacted with oxygen, and it is more complete to burn, simultaneously, adherent decline material is subjected to the interference of anti-abrasive disc 4, makes adherent material constantly be updated, and is convenient to material and the heat exchange of water-cooling wall intraductal working medium.
Because the technique scheme utilization, the advantage that the utility model compared with prior art has is:
1, because the utility model adopts the heat-resistant, wear-resistant metal material to make, therefore to almost not influence of furnace heating surface heat absorption.
2, the utility model adopts angle of declination to arrange, has reduced the nonmetal abrasionproof beam root water screen tube wearing and tearing of present extensive use.
3, the anti-abrasive disc outer end of the utility model flushes with the water-cooling wall protuberance or is short slightly, reduces damage probability in the burner hearth scaffold building process, reduces damage probability when using the hoistable platform operation in burner hearth, and hoistable platform need not be transformed.
Claims (4)
1. boiler hearth of circulating fluidized bed metal shoe, comprise fin and water screen tube, it is characterized in that, fin (1) is arranged between two water screen tubes (2), be welded with anti-abrasive disc (4) on fin (1) and water screen tube (2) madial wall, anti-abrasive disc (4) axially becomes 30 ° of-50 ° of angles with water screen tube (2).
2. boiler hearth of circulating fluidized bed metal shoe according to claim 1 is characterized in that, links together through fin, water-cooled tube wall attachment weld (5) between said fin (1) and water screen tube (2) tube wall.
3. boiler hearth of circulating fluidized bed metal shoe according to claim 1 is characterized in that, between said anti-abrasive disc (4) and fin (1), water screen tube (2) tube wall attachment weld (3) is arranged.
4. boiler hearth of circulating fluidized bed metal shoe according to claim 1 is characterized in that, the spill sheet of said anti-abrasive disc (4) for being made by the antiwear heat resisting stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201409366U CN202092119U (en) | 2011-05-06 | 2011-05-06 | Metal abrasion resistance device for hearth of circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201409366U CN202092119U (en) | 2011-05-06 | 2011-05-06 | Metal abrasion resistance device for hearth of circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202092119U true CN202092119U (en) | 2011-12-28 |
Family
ID=45367186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201409366U Expired - Fee Related CN202092119U (en) | 2011-05-06 | 2011-05-06 | Metal abrasion resistance device for hearth of circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202092119U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853423A (en) * | 2012-10-20 | 2013-01-02 | 郑州华宇耐磨制品有限公司 | Wear resisting method for water wall tubes of circulating fluidized bed boiler |
| CN103353111A (en) * | 2013-07-29 | 2013-10-16 | 刘欣 | Compound abrasion-proof device for water wall of circulating fluidized bed boiler |
-
2011
- 2011-05-06 CN CN2011201409366U patent/CN202092119U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853423A (en) * | 2012-10-20 | 2013-01-02 | 郑州华宇耐磨制品有限公司 | Wear resisting method for water wall tubes of circulating fluidized bed boiler |
| CN102853423B (en) * | 2012-10-20 | 2015-07-29 | 郑州华宇耐磨制品有限公司 | The anti-wearing method of circulating fluidized bed boiler water-cooling wall pipe |
| CN103353111A (en) * | 2013-07-29 | 2013-10-16 | 刘欣 | Compound abrasion-proof device for water wall of circulating fluidized bed boiler |
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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: 20111228 Termination date: 20130506 |