CN2658578Y - Nozzle button of recirculating fluidized bed boiler - Google Patents
Nozzle button of recirculating fluidized bed boiler Download PDFInfo
- Publication number
- CN2658578Y CN2658578Y CN 03278845 CN03278845U CN2658578Y CN 2658578 Y CN2658578 Y CN 2658578Y CN 03278845 CN03278845 CN 03278845 CN 03278845 U CN03278845 U CN 03278845U CN 2658578 Y CN2658578 Y CN 2658578Y
- Authority
- CN
- China
- Prior art keywords
- cylinder
- blast cap
- cylindrical surface
- fluidized bed
- bed boiler
- 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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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses an air hood of circulation fluidized bed boiler which is an inner hollow cylindrical structure, the lower end of the air hood is provided with an air inlet, the top of the air hood is provided with a pit, the outer side of the upper part of the air hood is an upper cylindrical surface, the lower part of the upper cylindrical surface is a hole-containing cylindrical surface, the hole-containing cylindrical surface is provided with air outlet holes, moreover the air outlet holes are inclined toward the outer side, the lower part of the hole-containing cylindrical surface is a middle-lower cylindrical surface, the lower part of the middle-lower cylindrical surface is a lower cylindrical surface, the top surface of the inner side is an arc-shaped surface, the lower part of the inner side is a cylindrical surface. The utility model can improve the abrasion of air hood effectively, in particular to the abrasion from the air outlet to the top, thereby prolonging service life of air hood.
Description
Affiliated technical field
The utility model relates to a kind of CFBB annex, especially a kind of blast cap of circulating fluidized bed boiler.
Background technology
CFBB is a kind of New-type boiler that newly emerges in large numbers in China in recent years, it adapts to wide, sufficient combustion, thermal efficiency height, environmental protection, advantage such as energy-conservation from beginning to put into operation just with its fuel, replaces other type boiler rapidly and becomes the main type of furnace of China's heat supply, power supply.One of primary structure in the combustion system of circulating fluidized bed boiler, air-distribution device play a part air distribution makes the smooth combustion of bed material homogenizing fluidisation.Parts blast cap wherein makes the air that enters fluidising chamber even, and the bed material produces strong blending.The blast cap that adopts in the present fluid bed furnace mostly is the oblique top mushroom and eats type, 7 fonts, because blast cap is positioned at the bottom of fluidising chamber, whole blast cap constantly washes away down the high temperature particle, makes the blast cap wearing and tearing, particularly air outlet is even more serious to the top wearing and tearing, causes frequent shutdown maintenance.
The utility model content
In order to overcome existing blast cap constantly washing away down at the high temperature particle, make the blast cap wearing and tearing, particularly air outlet is to the even more serious deficiency of top wearing and tearing, the utility model provides a kind of blast cap of circulating fluidized bed boiler can effectively improve the wearing and tearing to the top of the wearing and tearing of blast cap, particularly air outlet, prolongs the service life of blast cap.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of blast cap of circulating fluidized bed boiler, it is shaped as interior void column body structure, the lower end be provided with air inlet, top outer establish pit, upper outside face be the below of top cylinder, top cylinder be contain the hole cylinder, contain the hole cylinder be provided with exhaust vent and exhaust vent laterally declivity, the below that contains the hole cylinder be that the below of middle and lower part cylinder, middle and lower part cylinder is the bottom cylinder, the end face of medial surface is that cambered surface, bottom are cylinder.
The blast cap material therefor is the antiwear heat resisting alloy.
The beneficial effects of the utility model are, when the high temperature particle constantly washes away blast cap, because blast cap top is cylinder body shape, strengthened the size of exhaust vent to the top, and blast cap adopts the antiwear heat resisting alloy material, thereby improved the wearing and tearing of the wearing and tearing of blast cap, particularly air outlet to the top, prolong the service life of blast cap.The blast cap top is established pit and has not only been improved the flowability of air-flow but also saved material.The blast cap exhaust vent is declivity laterally, and what make air outlet goes out wind to the air outlet below, strengthens the flow perturbation of siege bottom, improves gas, solid two-phase mixing, and overheavy firing improves the CFBB thermal efficiency.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the vertical view of structural representation of the present utility model.
Fig. 3 is the upward view of structural representation of the present utility model.
1. pits among the figure, 2. top cylinder, 3. exhaust vent 4. contains the hole cylinder, 5. middle and lower part cylinder, 6. medial surface, 7. bottom cylinder, 8. air inlet.
The specific embodiment
Among Fig. 1, blast cap is interior void column body structure, the lower end is provided with air inlet 8, top outer is established pit 1, and the upper outside face is a top cylinder 2, and the below of top cylinder 2 is for containing hole cylinder 4, contain hole cylinder 4 and be provided with exhaust vent 3 and exhaust vent 3 declivity laterally, the below that contains hole cylinder 4 is a middle and lower part cylinder 5, and the below of middle and lower part cylinder 5 is a bottom cylinder 7, and the end face of medial surface 6 is that cambered surface, bottom are cylinder.
When blower fan enters wind in the blast cap by the air inlet 8 of air channel by blast cap, the exhaust vent 3 through blast cap is blown in the stove then, because blast cap exhaust vent 3 declivity laterally, thereby wind energy enough blows to the siege bottom surface, improves fluidization quality, and the thermal efficiency of stove improves.The blast cap top is established pit 1 and has not only been improved the flowability of air-flow but also saved material.For the service life that prolongs blast cap, the wearing and tearing that improve blast cap, column construction is adopted on the top of blast cap, strengthened the size of exhaust vent 3 to the blast cap top, and adopt the antiwear heat resisting alloy material, thereby when having improved the high temperature particle effectively and constantly having washed away blast cap, to the wearing and tearing of blast cap, particularly to the wearing and tearing of exhaust vent 3 to the blast cap top, thereby improved the service life of blast cap greatly, improved the operation ratio of stove.
Claims (2)
1. blast cap of circulating fluidized bed boiler, it is characterized in that: it is shaped as interior void column body structure, the lower end be provided with air inlet (8), top outer establish pit (1), upper outside face be top cylinder (2), described top cylinder (2) the below for contain hole cylinder (4), described contain hole cylinder (4) be provided with exhaust vent (3) and described exhaust vent (3) laterally declivity, the described below that contains hole cylinder (4) be that the below of middle and lower part cylinder (5), described middle and lower part cylinder (5) is bottom cylinder (7), the end face of medial surface (6) is that cambered surface, bottom are cylinder.
2. blast cap of circulating fluidized bed boiler according to claim 1 is characterized in that: material therefor is the antiwear heat resisting alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03278845 CN2658578Y (en) | 2003-09-28 | 2003-09-28 | Nozzle button of recirculating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03278845 CN2658578Y (en) | 2003-09-28 | 2003-09-28 | Nozzle button of recirculating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2658578Y true CN2658578Y (en) | 2004-11-24 |
Family
ID=34332180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03278845 Expired - Fee Related CN2658578Y (en) | 2003-09-28 | 2003-09-28 | Nozzle button of recirculating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2658578Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881440A (en) * | 2010-07-15 | 2010-11-10 | 西安热工研究院有限公司 | Annular constant-current hood |
| CN106287684A (en) * | 2016-01-18 | 2017-01-04 | 无锡华光锅炉股份有限公司 | A kind of blast cap for CFBB |
-
2003
- 2003-09-28 CN CN 03278845 patent/CN2658578Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881440A (en) * | 2010-07-15 | 2010-11-10 | 西安热工研究院有限公司 | Annular constant-current hood |
| CN106287684A (en) * | 2016-01-18 | 2017-01-04 | 无锡华光锅炉股份有限公司 | A kind of blast cap for CFBB |
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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 |