CN2532367Y - Wind cap for boiler - Google Patents
Wind cap for boiler Download PDFInfo
- Publication number
- CN2532367Y CN2532367Y CN 02208050 CN02208050U CN2532367Y CN 2532367 Y CN2532367 Y CN 2532367Y CN 02208050 CN02208050 CN 02208050 CN 02208050 U CN02208050 U CN 02208050U CN 2532367 Y CN2532367 Y CN 2532367Y
- Authority
- CN
- China
- Prior art keywords
- boiler
- blast cap
- air hood
- head
- cap head
- 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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Abstract
Disclosed is a boiler air hood, which is particularly suitable for a subcycle fluidized bed boiler and a boiling boiler. The traditional air hood structure is changed; an upper joint pipe and the air hood are connected together above a cast line through the thread, so that the air hood is easy to be replaced. An industrial ceramic anti-wearing head is arranged fixedly on the top of an air hood head, which can prolong the service life of the air hood effectively. A group of air exhaust holes inclining downward is designed at the periphery of the air hood head, which can prevent slag from blocking the air exhaust holes effectively when the boiler stops running. With the above changing, the utility model not only can guarantee the economical operation of the boiler, but also can guarantee the burning quality, and the maintenance cost is lowered.
Description
Technical field
The utility model relates to a kind of Wind cap for boiler, refers to a kind of conveniently replacedly especially, prevents to stop up and wear-resisting Wind cap for boiler.
Background technology
Critical component in coal-burning boiler, particularly fluidized bed furnace and the CFBB---blast cap, its effect is that the boiler air-supply is input in the siege bed material by it, the big I of control air output makes the siege bed material be in fluidized state or fluidized state all the time, makes the coal supply sufficient combustion.Because the working environment of blast cap is more special, not only will tolerate 900 ℃ of-1200 ℃ of high temperature, but also will stand the mill that dashes of coal particles and slag, there is following shortcoming in traditional blast cap in long-term use:
1, the blast cap wearability is relatively poor.With reference to Fig. 2, traditional blast cap is made by alloy cast steel, and in the coal particles of 900 ℃ of-1200 ℃ of high temperature and dashing under the mill of slag, blast cap head 1 serious wear particularly places the drain hole of boiler and the blast cap at returning charge mouth place, especially wearing and tearing easily.Make after part blast cap head is worn out and the extremely difficult control of fluidisation air quantity of boiler cause the fluidisation of boiler inhomogeneous, coal consumption increases, decrease in efficiency.Traditional blast cap generally is no more than 1 year service life, if when ature of coal is relatively poor, only be 3-5 month its service life.
2, blast cap is changed very difficult.The blast cap quantity of using in the boiler is many, and for example the blast cap quantity of the CFBB of 75t/h just reaches 850.Not only blast cap quantity is many, every blast cap is imbedded in the castable refractory with the lower part at teeming line 7, in case blast cap needs to change, must break and water material feeding, carry out integral replacing one by one, and then cast again, the blast cap of the CFBB of a 75t/h is changed once and is just needed about 10 days, has a strong impact on the economical operation of boiler.
3, vent stops up easily.In blast cap head circumferential distribution several vents 3 are arranged, the axis normal of vent is in the axis of lower linking tube 6, and when boiler during in blowing out, the lime-ash of burning can trickle and be deposited in around the vent, causes vent to stop up.During blow-on once again,, have a strong impact on the air-supply effect because of the vent blocking.
Summary of the invention
The purpose of this utility model will provide a kind of wear-resisting, vent to be difficult for stopping up and changing Wind cap for boiler easily exactly.
For achieving the above object, the technical solution of the utility model is achieved in that the Wind cap for boiler that comprises lower linking tube, upper connecting tube, blast cap head, and lower linking tube and upper connecting tube are that thread connection and mesopore are interconnected.The circumferential distribution of blast cap head has the vent that is communicated with mesopore.Blast cap head top is fixed with the anti-bistrique of industrial ceramics.Upper connecting tube above teeming line and blast cap head are thread connection.The relative horizontal alignment of axis of the vent of blast cap head circumferential distribution has a down dip.
The purpose that upper connecting tube above teeming line connects with the blast cap head thread is when changing the blast cap head, need not break and water material feeding, need only back out the blast cap head along screw thread, and what more renew gets final product again, and this can improve replacing speed, shortens the repairing time.
Be fixed with the anti-bistrique of industrial ceramics on blast cap head top, mainly, prolong the service life of blast cap in order to improve the anti-wear performance of blast cap crown portion.Also whole blast cap head 1,2 two parts can be made of one with industrial ceramics, but the percent defective of producing behind the sintering is higher.
At the downward-sloping vent of blast cap head circumferential distribution, can prevent that when blowing out slag is piled up and stopped up vent.During blow-on once again, do not influence, thereby effective control of assurance air output is fully burnt coal supply to the air-supply of siege bed material.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is known Wind cap for boiler structural representation
(known part)
1 wind top, 2 blast cap heads, 3 vents
4 upper connecting tubes, 5 mesopores, 6 lower linking tubes, 7 teeming lines
(the utility model)
1 industrial ceramics is prevented bistrique 2 blast cap heads 3 vents 4 upper connecting tubes
5 mesopores, 6 lower linking tubes, 7 convex shoulders, 8 teeming lines
Specific embodiments
In the known techniques of blast cap, blast cap head 2 is an one with upper connecting tube 4, and the thread connection position between upper connecting tube and the lower linking tube 6 is, promptly to represent to be cast in to water in the material feeding below 7 at teeming line.The material of the material at blast cap top 1 and blast cap integral body is alloy cast steel and makes, and its service life is generally in 1 year.Exhaust duct 3 is the level position, communicates with mesopore 5, when blowing out, is stopped up by slag easily, is unfavorable for using once again.
The utility model comprises lower linking tube 6, upper connecting tube 4, blast cap head 2.Lower linking tube and upper connecting tube are that thread connection and mesopore 5 are interconnected.The circumferential distribution of blast cap head 2 has the vent 3 that is communicated with mesopore 5.Blast cap head top is installed with the anti-bistrique 1 of industrial ceramics, and so-called industrial ceramics is meant composites such as the firm gold pottery, carborundum of heat resistant and wear resistant better performances.Upper connecting tube above teeming line 8 and blast cap head 2 are thread connection.Needn't break pour mass like this, can back out the blast cap head and the blast cap head that more renews along screw thread.The relative horizontal alignment of axis of the vent 3 of blast cap head circumferential distribution has a down dip, and slag stops up vent when being intended to prevent blowing out.The downward-sloping angular range of vent is at 10 °～25 °.If less than 10 °, the anti-clogging effect is relatively poor, if greater than 25 °, then wind pushing performance is not ideal.Convex shoulder 7 is in below the teeming line, its objective is for blast cap axial restraint in pour mass.
Claims (1)
1 one kinds of Wind cap for boiler, comprise lower linking tube (6), upper connecting tube (4), blast cap head (2), lower linking tube and upper connecting tube are thread connection and are interconnected with mesopore (5), the circumferential distribution of blast cap head (2) has the vent (3) that is communicated with mesopore (5), it is characterized in that: blast cap head top is fixed with the anti-bistrique (1) of industrial ceramics; Upper connecting tube and blast cap head (2) in teeming line (8) top are thread connection; The relative horizontal alignment of axis of the vent (3) of blast cap head circumferential distribution has a down dip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02208050 CN2532367Y (en) | 2002-03-19 | 2002-03-19 | Wind cap for boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02208050 CN2532367Y (en) | 2002-03-19 | 2002-03-19 | Wind cap for boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2532367Y true CN2532367Y (en) | 2003-01-22 |
Family
ID=33688854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02208050 Expired - Fee Related CN2532367Y (en) | 2002-03-19 | 2002-03-19 | Wind cap for boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2532367Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943401A (en) * | 2010-06-18 | 2011-01-12 | 中国神华能源股份有限公司 | Air distribution method for circulating fluidized bed boiler |
| CN102305399A (en) * | 2011-09-01 | 2012-01-04 | 中国华能集团清洁能源技术研究院有限公司 | Conveniently-assembled cowl with self-tightening function |
| DK178400B1 (en) * | 2003-05-29 | 2016-02-01 | Babcock & Wilcox Co | Bottom Clock Collection |
| KR101921254B1 (en) * | 2018-04-25 | 2018-11-22 | 성실기계 주식회사 | Air Circulation Nozzle Device for Fluidized Bed Combustor |
-
2002
- 2002-03-19 CN CN 02208050 patent/CN2532367Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK178400B1 (en) * | 2003-05-29 | 2016-02-01 | Babcock & Wilcox Co | Bottom Clock Collection |
| CN101943401A (en) * | 2010-06-18 | 2011-01-12 | 中国神华能源股份有限公司 | Air distribution method for circulating fluidized bed boiler |
| CN102305399A (en) * | 2011-09-01 | 2012-01-04 | 中国华能集团清洁能源技术研究院有限公司 | Conveniently-assembled cowl with self-tightening function |
| KR101921254B1 (en) * | 2018-04-25 | 2018-11-22 | 성실기계 주식회사 | Air Circulation Nozzle Device for Fluidized Bed Combustor |
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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 |