CN209588037U - A kind of circulating fluid bed boiler blast cap - Google Patents
A kind of circulating fluid bed boiler blast cap Download PDFInfo
- Publication number
- CN209588037U CN209588037U CN201920091710.8U CN201920091710U CN209588037U CN 209588037 U CN209588037 U CN 209588037U CN 201920091710 U CN201920091710 U CN 201920091710U CN 209588037 U CN209588037 U CN 209588037U
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- China
- Prior art keywords
- blast cap
- bar shaped
- hole
- circulating fluid
- boiler
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- Expired - Fee Related
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model provides a kind of circulating fluid bed boiler blast cap, the Wind cap for boiler includes (1) at the top of blast cap, blast cap cylinder (2) and blast cap casing (3), bar shaped blast cap hole (4) is provided on blast cap cylinder (2) wall, bar shaped blast cap hole (4) totally three row, every row's bar shaped blast cap hole (4) is evenly arranged along blast cap cylinder (2) side wall circumferencial direction, bar shaped blast cap hole (4) tilts down arrangement by outer in blast cap cylinder (2), its tilt angle is 15 ° ~ 24 °, and the diameter in bar shaped blast cap hole (4) is gradually increased from inside to outside.The circulating fluid bed boiler blast cap, pass through the optimization to bar shaped blast cap pore structure, enhance the perturbation of fluidized bed material, bed material is set to have obtained sufficient mixing, solve the problems, such as that blast cap hole bed material disturbance effect between air distribution plate castable is poor, solves the problems, such as blast cap hole plug simultaneously, it is ensured that the fluid effect of bed material.
Description
Technical field
The utility model belongs to circulating fluidized bed boiler material-returning device field, in particular to a kind of New Cycle fluidized bed pot
Furnace blast cap.
Background technique
Mount Tai village coal mine steam power plant #2 boiler is that CG-75/5.3-MX9 type moderate multiplying factor of Sichuan Boiler Factory's production is ciculation fluidized
Bed boiler, the characteristics of according to mine coal quality, design fuel is to wash cash, wash middle coal, and burning bed air-distribution device uses " 7 " font macropore
Diameter wind cap.After running after a period of time, boiler combustion situation constantly deteriorates, and fuel combustion is incomplete, through chemically examining, ash
Combustibles in the slag content is up to 30% or more, and when boiler operatiopn, flue gas oxygen content is exceeded serious 15% or more, directly affects pot
The economical operation of furnace.Blowing out inspection finds that blast cap abrasion is very serious, and thoroughly by mill, leakage slag thickness reaches 80% or more blast cap in air compartment
400mm, the serious normal operation for affecting boiler, meanwhile, cause material and artificial larger waste.
According to the form and area of boiler grid plate, by calculating the fluidising air velocity and Fluidization wind rate of blast cap aperture, by four
River boiler factory propose technology alteration, by original " 7 " font large aperture wind cap change into three row of horizontal totally 24 holes arrangement
" bar shaped " blast cap finds that blast cap is worn still than more serious by the operation of half a year, and fluidization quality is not very well, to have big
Deposition of particles.
Summary of the invention
In view of the above problems, the purpose of the utility model is to provide a kind of circulating fluid bed boiler blast caps.
By the way that the structure of the aperture of blast cap is transformed, avoids blast cap aperture to phenomenon is blown, reduce the plugging rate of aperture, keep boiler cloth wind equal
It is even, reach combustion adjustment requirement.
The purpose of this utility model is achieved through the following technical solutions:
A kind of circulating fluid bed boiler blast cap, the Wind cap for boiler includes at the top of blast cap, blast cap cylinder and blast cap casing,
It is provided with bar shaped blast cap hole on blast cap barrel, bar shaped blast cap hole totally three row, every row's bar shaped blast cap hole is along blast cap cylinder side wall
Circumferencial direction is evenly arranged, and bar shaped blast cap hole tilts down arrangement by outer in blast cap cylinder, tilt angle for 15 ° ~
24 °, and the diameter in bar shaped blast cap hole is gradually increased from inside to outside
Further, the innermost diameter in bar shaped blast cap hole is 5.5mm-6mm, and outermost diameter is 6mm-
6.5mm。
Further, the distance between every row's bar shaped blast cap hole is 10-20mm.
Further, the blast cap material is ZG8Cr26Ni4Mn3N.
The utility model having the beneficial effect that compared with prior art
Circulating fluid bed boiler blast cap described in the utility model, by the way that the angle of apertures in bar shaped blast cap hole is transformed,
The phenomenon that blast cap hole is to blowing is avoided, the plugging rate in blast cap hole is reduced, keeps boiler cloth wind uniform, reaches combustion adjustment requirement,
Boiler fluidization quality substantially improves, and ensure that the safe operation of boiler, extends the cycle of operation of boiler, only improves boiler fluidisation
Quality improves boiler combustion efficiency, according to statistics, can save coal-fired more than 1000 tons every year, save about 500,000 yuan of fuel cost；2, it saves
About Master Cost: before implementation, blast cap of replacement, after transformation, blast cap (the 2# Wind cap for boiler number of replacement in 2 years are required every year
Amount is 700, and each blast cap price is 70 yuan), blast cap expense can be saved year: ten thousand yuan of 700 × 70=4.9.Annual total generation
54.9 ten thousand yuan of benefit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of circulating fluid bed boiler blast cap described in the utility model；
Fig. 2 is the cross-sectional view of Fig. 1.
Specific embodiment
As shown in Figure 1 and Figure 2, a kind of circulating fluid bed boiler blast cap, the Wind cap for boiler packet are present embodiments provided
1, blast cap cylinder 2 and blast cap casing 3 at the top of blast cap are included, bar shaped blast cap hole 4 is provided on 2 wall of blast cap cylinder, bar shaped blast cap hole 4 is total
Three rows, every row's bar shaped blast cap hole 3 are evenly arranged along 2 side wall circumferencial direction of blast cap cylinder, and bar shaped blast cap hole 4 is by blast cap cylinder 2
Interior and outer tilts down arrangement, and tilt angle is 15 °, enhances the perturbation of fluidized bed material, fills bed material
Point mixing, aperture clogs caused by reducing because of aperture to blowing ensure that the smoothness of blast cap aperture, it is ensured that the stream of bed material
Change effect, in addition, the diameter in bar shaped blast cap hole is gradually increased from inside to outside, innermost diameter is 6mm, outermost straight
Diameter is 6.5mm.The design further ensures the smoothness of blast cap aperture, it is ensured that the vulcanization effect of bed material, and every row's bar shaped
Distance between blast cap hole is 15mm.The blast cap material is ZG8Cr26Ni4Mn3N。
Claims (5)
1. a kind of circulating fluid bed boiler blast cap, the Wind cap for boiler includes (1) at the top of blast cap, blast cap cylinder (2) and blast cap
Casing (3) is provided with bar shaped blast cap hole (4) on blast cap cylinder (2) wall, which is characterized in that bar shaped blast cap hole (4) totally three row,
Every row's bar shaped blast cap hole (4) is evenly arranged along blast cap cylinder (2) side wall circumferencial direction, and bar shaped blast cap hole (4) is by blast cap cylinder
(2) outer in tilt down arrangement, tilt angle is 15 ° ~ 24 °, and the diameter in bar shaped blast cap hole (4) is from inside to outside
It is gradually increased.
2. circulating fluid bed boiler blast cap according to claim 1, which is characterized in that every row's bar shaped blast cap hole (4)
Quantity be 8, totally 24.
3. circulating fluid bed boiler blast cap according to claim 1, which is characterized in that bar shaped blast cap hole (4)
Tilt angle be 15 °.
4. circulating fluid bed boiler blast cap according to claim 1, which is characterized in that bar shaped blast cap hole (4)
Innermost diameter is 5.5mm-6mm, and outermost diameter is 6mm-6.5mm.
5. circulating fluid bed boiler blast cap according to claim 1, which is characterized in that every row's bar shaped blast cap hole (4)
Between distance be 10-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920091710.8U CN209588037U (en) | 2019-01-21 | 2019-01-21 | A kind of circulating fluid bed boiler blast cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920091710.8U CN209588037U (en) | 2019-01-21 | 2019-01-21 | A kind of circulating fluid bed boiler blast cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209588037U true CN209588037U (en) | 2019-11-05 |
Family
ID=68352224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920091710.8U Expired - Fee Related CN209588037U (en) | 2019-01-21 | 2019-01-21 | A kind of circulating fluid bed boiler blast cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209588037U (en) |
-
2019
- 2019-01-21 CN CN201920091710.8U patent/CN209588037U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191105 Termination date: 20220121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |