CN204986992U - Air inlet structure of circulating fluidized bed boiler - Google Patents
Air inlet structure of circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN204986992U CN204986992U CN201520721026.5U CN201520721026U CN204986992U CN 204986992 U CN204986992 U CN 204986992U CN 201520721026 U CN201520721026 U CN 201520721026U CN 204986992 U CN204986992 U CN 204986992U
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- CN
- China
- Prior art keywords
- blast cap
- airduct
- air inlet
- hood
- inlet structure
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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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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses an air inlet structure of circulating fluidized bed boiler, including tuber pipe and hood, the top of tuber pipe is sealed, and its upper portion is fixed with the emergence, be provided with a plurality of through -holes that the array form distributes that are on the perisporium on tuber pipe upper portion, the hood cover connects at the tuber pipe outsidely, the interior top of hood is provided with the recess that is used for with emergence cooperation joint, the hood lower part forms expansion portion to the outside expansion from top to bottom gradually, the utility model has the advantages of the hood is changed the convenience with tuber pipe convenient assembling, hood, can effectively be avoided the stifled ash of tuber pipe, can further realize even cloth subhead simultaneously.
Description
Technical field
The utility model belongs to inlet air of boiler technical field of structures, relates to a kind of air inlet structure of CFBB.
Background technology
Blast cap is one of significant components of CFBB air inlet structure, the effect of blast cap is that the air generation second time making to enter fluid bed is shunted and has certain kinetic energy, to reduce the generation of incipient bubble and to make bottom coarse granule produce strong disturbance, avoid coarse grained deposition, reduce cold slag containing carbon loss.Blast cap can also produce enough pressure drops, the effect of even distributing wind simultaneously.Existing air inlet structure, comprise airduct and blast cap, blast cap is hemispherical, its top drilling, blast cap is arranged on airduct, airduct and blast cap type of attachment are passed through at blast cap bottom welding, this form is not only inconvenient to weld, blast cap top has aperture simultaneously, airduct top is uncovered, also easily stifled grey, because blast cap is in burner hearth bottom, ash is many easily there is stifled ash, wear and tear more severe simultaneously, easily bad, and the quantity of blast cap is compared, how a lot of the assembly of other boilers is, hundreds and thousands of of a general stove blast cap quantity, this just gives and installs, examine and replace brings certain difficulty.
Summary of the invention
For the problems referred to above, the technical problems to be solved in the utility model is to provide a kind of blast cap and airduct is easy to assembly, blast cap is changed conveniently, effectively can avoid the stifled ash of airduct, can realize the air inlet structure of the CFBB of even cloth point object further simultaneously.
The air inlet structure of CFBB of the present utility model, comprise airduct and blast cap, the end sealing of described airduct, its top is fixed with excrescence, the perisporium on described airduct top is provided with the through hole of some distributions in array-like, described blast cap cover is connected on airduct outside, and the inner top of described blast cap is provided with the groove for coordinating clamping with excrescence, and described blast cap bottom is from top to bottom externally expanded gradually and formed enlarged portion.
The air inlet structure of CFBB of the present utility model, wherein, described excrescence and groove are round table-like.
The air inlet structure of CFBB of the present utility model, wherein, described enlarged portion arc transition.
The air inlet structure of CFBB of the present utility model, wherein, the outer top of described blast cap is dome-shaped.
The utility model beneficial effect: a kind of blast cap of the present utility model and airduct easy to assembly, blast cap is changed convenient, effectively can avoid the stifled ash of airduct, the air inlet structure of the CFBB of even cloth point object can be realized further simultaneously, due to the top seal of airduct, during work, wind is discharged from the through hole airduct perisporium, then discharged by the gap between blast cap and airduct, adopt in this way, significantly reduce the generation of airduct clogging phenomenon, by the bottom at blast cap, enlarged portion is set, good guide effect can be played to wind, furthermore achieved that the object of even distributing wind, because blast cap cover is connected on airduct, and blast cap is connected on airduct by the connected mode that groove coordinates with excrescence, without the need to welding, bring great convenience to the assembling of blast cap and replacing, by the outer top of blast cap is arranged to dome-shaped, ashes can be avoided to accumulate in the top of blast cap, thus the corrosion that ashes cause blast cap can be slowed down.
Accompanying drawing explanation
For ease of illustrating, the utility model is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is sectional structure schematic diagram of the present utility model.
Detailed description of the invention
The air inlet structure of CFBB as shown in Figure 1, comprise airduct 1 and blast cap 2, the end sealing of described airduct 1, its top is fixed with excrescence 11, the perisporium on described airduct 1 top is provided with the through hole 12 of some distributions in array-like, it is outside that described blast cap 2 cover is connected on airduct 1, the inner top of described blast cap 2 is provided with the groove 21 for coordinating clamping with excrescence 11, described blast cap 2 bottom is from top to bottom externally expanded gradually and is formed enlarged portion 22, described excrescence 11 and groove 21 are round table-like, described enlarged portion 22 arc transition, the outer top of described blast cap 2 is dome-shaped, due to the top seal of airduct, during work, wind is discharged from the through hole airduct perisporium, then discharged by the gap between blast cap and airduct, adopt in this way, significantly reduce the generation of airduct clogging phenomenon, by the bottom at blast cap, enlarged portion is set, good guide effect can be played to wind, furthermore achieved that the object of even distributing wind, because blast cap cover is connected on airduct, and blast cap is connected on airduct by the connected mode that groove coordinates with excrescence, without the need to welding, bring great convenience to the assembling of blast cap and replacing, by the outer top of blast cap is arranged to dome-shaped, ashes can be avoided to accumulate in the top of blast cap, thus the corrosion that ashes cause blast cap can be slowed down.
Embodiment recited above is only be described preferred embodiment of the present utility model, not limits design of the present utility model and scope.Under the prerequisite not departing from the utility model design concept; the various modification that this area ordinary person makes the technical solution of the utility model and improvement; protection domain of the present utility model all should be dropped into; the technology contents of the utility model request protection, all records in detail in the claims.
Claims (4)
1. the air inlet structure of a CFBB, comprise airduct (1) and blast cap (2), it is characterized in that: the end sealing of described airduct (1), its top is fixed with excrescence (11), the perisporium on described airduct (1) top is provided with the through hole (12) of some distributions in array-like, it is outside that described blast cap (2) cover is connected on airduct (1), the inner top of described blast cap (2) is provided with the groove (21) for coordinating clamping with excrescence (11), described blast cap (2) bottom is externally expansion formation enlarged portion (22) gradually from top to bottom.
2. the air inlet structure of CFBB according to claim 1, is characterized in that: described excrescence (11) and groove (21) are round table-like.
3. the air inlet structure of CFBB according to claim 1, is characterized in that: described enlarged portion (22) arc transition.
4. the air inlet structure of CFBB according to claim 1, is characterized in that: the outer top of described blast cap (2) is dome-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520721026.5U CN204986992U (en) | 2015-09-11 | 2015-09-11 | Air inlet structure of circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520721026.5U CN204986992U (en) | 2015-09-11 | 2015-09-11 | Air inlet structure of circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204986992U true CN204986992U (en) | 2016-01-20 |
Family
ID=55121359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520721026.5U Expired - Fee Related CN204986992U (en) | 2015-09-11 | 2015-09-11 | Air inlet structure of circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204986992U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645571A (en) * | 2018-07-17 | 2020-01-03 | 丁杨洋 | Hood for boiler in power industry |
| CN111065857A (en) * | 2017-08-30 | 2020-04-24 | 三菱日立电力***株式会社 | Air nozzle, outer cylinder, boiler, power generation system, and method for replacing outer cylinder of air nozzle |
-
2015
- 2015-09-11 CN CN201520721026.5U patent/CN204986992U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111065857A (en) * | 2017-08-30 | 2020-04-24 | 三菱日立电力***株式会社 | Air nozzle, outer cylinder, boiler, power generation system, and method for replacing outer cylinder of air nozzle |
| CN110645571A (en) * | 2018-07-17 | 2020-01-03 | 丁杨洋 | Hood for boiler in power industry |
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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: 20160120 Termination date: 20160911 |