CN208222544U - A kind of face-fired boiler secondary air box deashing device - Google Patents
A kind of face-fired boiler secondary air box deashing device Download PDFInfo
- Publication number
- CN208222544U CN208222544U CN201820550044.5U CN201820550044U CN208222544U CN 208222544 U CN208222544 U CN 208222544U CN 201820550044 U CN201820550044 U CN 201820550044U CN 208222544 U CN208222544 U CN 208222544U
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- China
- Prior art keywords
- secondary air
- air box
- shaft
- face
- fired 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.)
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Abstract
The utility model provides a kind of face-fired boiler secondary air box deashing device, the shaft including running through secondary air box；Described shaft one end is stretched out outside secondary air box links with a driving mechanism；Several groups scraping machine structure is fixed in the shaft；When the driving mechanism drive shaft rotates, the scraping machine structure is driven to rotate, scraping machine structure, which rotates, to form circuit orbit and secondary air box bottom is tangent.The utility model is rotated in secondary air box using driving mechanism driving scraping machine structure, and is contacted with bottom wall, and realization disturbs bottom wall dust stratification to the greatest extent, is formed and is disturbed in bellows bottom, prevents flying dust from accumulating in bottom.
Description
Technical field
The utility model relates to station boiler bellows technical field, a kind of specifically face-fired boiler secondary air box
Deashing device.
Background technique
In coal-fired plant boiler operation, a large amount of flying dusts in back-end ductwork can enter Secondary Air by rotary regenerative air heater
Road is then taken into the secondary air box of opposed firing boiler, a small amount of fine ash in secondary air box can with hot wind from burner nozzle into
Enter burner hearth and participate in combustion process, remaining ash can then deposit in secondary air box.Dust stratification degree and power plant's burning coal and boiler
Runing time length is related, certain longer power plant of runing time, and dust stratification thickness is more than 1m in secondary air box, even if when operation
Between shorter boiler, dust stratification thickness also has 10cm or more in secondary air box.A large amount of ash product is in secondary air box, it will increases
The risk that bellows occur or collapse, brings economic loss, while also will affect the distribution of secondary air box flow field, thus
Jeopardize the safety and economy of boiler operatiopn.Domestic visible correlative study report, " the fans entrance wind delivered such as Yao Ming et al.
The technological transformation of case ", the utility model patent " the pulverized-coal fired boiler bellows of included ash discharge function " of Xu Qiming et al., Ma Qilei et al.
Utility model patent " a kind of boiler bellows accumulatingdust device " etc..
Bellows dust removing system in " the pulverized-coal fired boiler bellows of included ash discharge function ", adds ash bucket in bottom.On the one hand,
Undisturbed device in bellows, ash are easy to overstock in bellows bottom；On the other hand, when dust stratification is more, ash bucket is easy to block." one
Kind of boiler bellows accumulatingdust device " in make to generate strong flow perturbation in bellows using high pressure air stream, prevent flying dust from existing
The accumulation of bellows bottom, but the momentum of pressure-air is limited, and for distance compared with far beyond thick bottom grieshoch, disturbance ability decline can
Deashing can be will appear to be not thorough, and long-play, compressed air spout is easy to appear blocking, influences normal use.
Utility model content
The technical problems to be solved in the utility model is to prevent dust accretions technology in secondary air box in the prior art
Disturbance ability is limited, provides a kind of face-fired boiler secondary air box deashing device.
The utility model solves above-mentioned technical problem by the following technical programs:
A kind of face-fired boiler secondary air box deashing device, the shaft including running through secondary air box；Described shaft one end
It stretches out outside secondary air box and links with a driving mechanism；Several groups scraping machine structure is fixed in the shaft；The driving mechanism
When drive shaft rotates, the scraping machine structure is driven to rotate, scraping machine structure, which rotates, to form circuit orbit and secondary air box bottom is tangent.
Preferably, the scraper plate connection frame that the scraping machine structure includes scraper plate and is fixed on scraper plate in shaft.
Preferably, the scraper plate connection frame includes vertical bar and cross bar, and vertical bar and the T-shaped structure of cross bar, vertical bar are vertically fixed
In shaft, the scraper plate is fixed at cross bar both ends respectively.
Preferably, the scraper plate is arc scraper plate, and nock direction is consistent with rotation direction.
Preferably, the shaft is horizontally fixed in secondary air box by bearing.
Preferably, the shaft middle position is fixed with shaft, and is supported on secondary air box bottom wall by rotary shaft rack.
Preferably, scraping machine structure described in multiple groups axially and symmetrically or is staggered along shaft.
Preferably, the driving mechanism 5 is motor.
Utility model has the advantages that
The utility model is rotated in secondary air box using driving mechanism driving scraping machine structure, and is contacted with bottom wall,
Realization disturbs bottom wall dust stratification to the greatest extent, is formed and is disturbed in bellows bottom, prevents flying dust from accumulating in bottom.
Arc scraper plate can realize that the dust that will be swept takes certain altitude to and raises, and in scraper plate and will be raised using Secondary Air
Flying dust is blown into burner nozzle.
Shaft axially and symmetrically or the scraping machine structure that is staggered, realize high forcing frequency, prevent flying dust bottom accumulate.
The utility model need to only set up rotation axis in bellows and mechanical arc scraper plate, motor are arranged in outside bellows, tie
Structure is simple, and failure rate is low.On the other hand, ash disposal is high-efficient, can continuous work.It does not need to be additionally arranged at the bottom ash bucket in bellows, no
There are ash discharge blockage problems, ask without worrying that spout existing for blowing plant blowing deposited dust blocks and range is shorter
Topic.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of the utility model；
The overlooking structure diagram that Fig. 2 is 1；
Fig. 3 is the structural schematic diagram of scraping machine structure in the utility model.
Specific embodiment
The structure feature of utility model and it is reached the effect of have a better understanding and awareness, preferably to implement
Example and attached drawing cooperation detailed description, are described as follows:
As shown in Figure 1 and Figure 2, a kind of face-fired boiler secondary air box deashing device, including turning through secondary air box 8
Axis 1；Shaft 1 is generally the middle and lower part that level is applied in secondary air box 8.Described 1 one end of shaft is stretched out outside secondary air box 8 drives with one
Motivation structure 5 links；The driving mechanism 5 is motor.Several groups scraping machine structure 4 is fixed in the shaft 1；The driving machine
When 5 drive shaft 1 of structure rotates, the scraping machine structure 4 is driven to rotate, the rotation of scraping machine structure 4 forms circuit orbit and secondary air box 8
Bottom is tangent.
As shown in figure 3, the scraping machine structure 4 includes scraper plate 41 and the scraper plate connection frame being fixed on scraper plate 41 in shaft 1
42.The scraper plate connection frame 42 includes vertical bar and cross bar, and vertical bar and the T-shaped structure of cross bar, vertical bar are vertically fixed in shaft 1,
The scraper plate 41 is fixed at cross bar both ends respectively.The scraper plate is arc scraper plate, and nock direction is consistent with rotation direction.Multiple groups institute
State scraping machine structure 4 along shaft 1 axially and symmetrically or be staggered.
The shaft 1 is horizontally fixed in secondary air box 8 by bearing 3.It, can position therebetween since shaft 1 is longer
It is fixed with shaft 3, and is supported on 8 bottom wall of secondary air box by rotary shaft rack 2.
The utility model sets up rotation axis in secondary air box, using the arc scraper plate in motor driven rotation axis, continuously
The dust stratification for sweeping bellows bottom, making flying dust, aweather upper box part raises, and the flying dust raised enters burner hearth with Secondary Air, and periodic operation turns
Moving axis accumulate flying dust can not in bellows.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only the principles of the present invention, the utility model also has respectively on the premise of not departing from the spirit and scope of the utility model
Kind changes and improvements, these changes and improvements are both fallen in the range of claimed invention.The requires of the utility model
Protection scope defined by appended claims and its equivalent.
Claims (8)
1. a kind of face-fired boiler secondary air box deashing device, it is characterised in that: the shaft including running through secondary air box (8)
(1)；Described shaft (1) one end stretches out secondary air box (8) and links outside with a driving mechanism (5)；It is fixed on the shaft (1)
Several groups scraping machine structure (4)；When driving mechanism (5) drive shaft (1) rotates, drives the scraping machine structure (4) to rotate, scrape
Grey mechanism (4) rotation forms circuit orbit and secondary air box (8) bottom is tangent.
2. a kind of face-fired boiler secondary air box deashing device according to claim 1, it is characterised in that: described to scrape ash
The scraper plate connection frame (42) that mechanism (4) includes scraper plate (41) and is fixed on scraper plate (41) on shaft (1).
3. a kind of face-fired boiler secondary air box deashing device according to claim 2, it is characterised in that: the scraper plate
Connection frame (42) includes vertical bar and cross bar, and vertical bar and the T-shaped structure of cross bar, vertical bar are vertically fixed on shaft (1), cross bar both ends
The scraper plate (41) are fixed respectively.
4. a kind of face-fired boiler secondary air box deashing device according to claim 2 or 3, it is characterised in that: described
Scraper plate is arc scraper plate, and nock direction is consistent with rotation direction.
5. a kind of face-fired boiler secondary air box deashing device according to any one of claims 1 to 3, it is characterised in that:
The shaft (1) is horizontally fixed on secondary air box (8) by bearing (3).
6. a kind of face-fired boiler secondary air box deashing device according to claim 5, it is characterised in that: the shaft
(1) middle position is fixed with bearing (3), and is supported on secondary air box (8) bottom wall by rotary shaft rack (2).
7. a kind of face-fired boiler secondary air box deashing device according to any one of claims 1 to 3, it is characterised in that:
Scraping machine structure (4) described in multiple groups axially and symmetrically or is staggered along shaft (1).
8. a kind of face-fired boiler secondary air box deashing device according to any one of claims 1 to 3, it is characterised in that:
The driving mechanism (5) is motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820550044.5U CN208222544U (en) | 2018-04-17 | 2018-04-17 | A kind of face-fired boiler secondary air box deashing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820550044.5U CN208222544U (en) | 2018-04-17 | 2018-04-17 | A kind of face-fired boiler secondary air box deashing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208222544U true CN208222544U (en) | 2018-12-11 |
Family
ID=64529596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820550044.5U Expired - Fee Related CN208222544U (en) | 2018-04-17 | 2018-04-17 | A kind of face-fired boiler secondary air box deashing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208222544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107911A (en) * | 2019-04-30 | 2019-08-09 | 华电电力科学研究院有限公司 | A kind of novel secondary wind system and its working method for face-fired boiler |
-
2018
- 2018-04-17 CN CN201820550044.5U patent/CN208222544U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107911A (en) * | 2019-04-30 | 2019-08-09 | 华电电力科学研究院有限公司 | A kind of novel secondary wind system and its working method for face-fired boiler |
| CN110107911B (en) * | 2019-04-30 | 2023-09-08 | 华电电力科学研究院有限公司 | Secondary air system for opposed firing boiler and working method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181211 Termination date: 20190417 |