CN203836932U - Abrasion-proof guiding device for overheater - Google Patents
Abrasion-proof guiding device for overheater Download PDFInfo
- Publication number
- CN203836932U CN203836932U CN201420180241.4U CN201420180241U CN203836932U CN 203836932 U CN203836932 U CN 203836932U CN 201420180241 U CN201420180241 U CN 201420180241U CN 203836932 U CN203836932 U CN 203836932U
- Authority
- CN
- China
- Prior art keywords
- abrasion
- superheater
- flue
- overheater
- proof
- 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
Links
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses an abrasion-proof guiding device for an overheater. The abrasion-proof guiding device for the overheater comprises a flue of a coal-fired boiler and the overheater installed in the flue, wherein the top wall of the flue is provided with a downward-extended abrasion-proof beam located in front of the vertical convection overheater. The front side face of the abrasion-proof beam is an inclined face which is obliquely arranged forwards from top to bottom. A connecting transition surface for the front side face of the abrasion-proof beam and the top wall of the flue is a cambered surface. All the surfaces of the abrasion-proof beam and the transition surface are all smooth surfaces. The abrasion-proof guiding device for the overheater has the advantages of being small in abrasion on the overheater, long in service life, small in amount of dust accumulated at the bottom of the overheater and good in heat transfer effect.
Description
Technical field
The utility model relates to a kind of superheater abrasion-resistant diversion.
Background technology
At present, there is a lot of coal-fired steam boilers in horizontal flue, to be designed with vertical convection superheater, the high temperature ash-laden gas of superheater front portion is all generally to wash away at a high speed high temperature superheater after transferring bottom horizontal flow sheet to by upwards flowing, high temperature superheater front portion is front upper part wearing and tearing especially severe particularly, thereby cause superheater short service life, and horizontal flue bottom operation a period of time is easy to dust stratification, produce the phenomenon that over-heat at the bottom organ pipe part is buried by cigarette ash, impact is conducted heat.
The coal-fired steam boiler high-temperature flue gas that coal combustion produces in burner hearth contains a large amount of soot dust granules, even the flue gas of the CFBB of separating at high temperature after separator separates also contains a large amount of tiny flue gas particles, when pendant superheater is in the time that its rear portion horizontal flue is arranged, first high temperature superheater runs into washing away of high-temperature dust-containing flue gas, its anterior several array of pipes are washed away especially severe, again because having carried out the turning of 90 degree before sweep of gases high temperature superheater, when ash-laden gas tempo turn is flowed, under centrifugal action, go up most (outside) portion's dust contained flue gas concentration is the highest, the wearing and tearing that while washing away high temperature superheater, superheater caused are more serious, secondly, when ash-laden gas washes away high temperature superheater at a high speed, flue dust collision tube wall flow velocity bust, flue dust falls back to horizontal flue bottom because of inertial separation effect, causes bottom dust stratification pipe laying after operation a period of time, and impact is conducted heat.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of superheater abrasion-resistant diversion, the wearing and tearing that superheater caused to reduce flue dust, the service life of prolongation superheater.
In order to solve the problems of the technologies described above, the utility model provides a kind of superheater abrasion-resistant diversion with following structure, comprise the flue of coal-burning boiler and be arranged on the superheater in flue, its design feature is that flue top wall is provided with down the abrasionproof beam of stretching and be positioned at vertical convection superheater front.
As the improvement of technique scheme, the leading flank of described abrasionproof beam is the inclined plane that turns forward from top to bottom and arrange.The leading flank of abrasionproof beam is set to inclined plane, can improve water conservancy diversion effect.
In order further to improve water conservancy diversion effect, on the basis of technique scheme, further improved technical scheme is: the leading flank of described abrasionproof beam is cambered surface with the transition face that is connected of described flue top wall.
As the improvement technical scheme that further improves water conservancy diversion effect be: each surface and the described transition face of described abrasionproof beam are shiny surface.
In order to reach abrasionproof water conservancy diversion effect and to reduce cost of manufacture, under described abrasionproof beam, stretching is highly 300-500mm.
In order to improve the abrasive resistance of comb before stream superheater, on the leading flank of the front comb of described superheater, be equipped with on the front comb of anti-abrasion cover or described superheater and be set with wearing bush.
By the setting of abrasionproof beam, first high temperature ash-laden gas impacts abrasionproof beam while upwards flowing, that is to say under the stopping of abrasionproof beam, ash-laden gas does not contact with superheater top, not can to superheater front portion particularly front upper part impact, effectively reduce flue dust to the particularly wearing and tearing of front upper part of superheater front portion, thereby making the utlity model has superheater, to make wearing and tearing few, the advantage of long service life.Moreover, under abrasionproof beam guide functions, be back to again flue bottom after flue gas is leading, wash away the ash of depositing of flue bottom, make bottom deposit ash amount and reduce, prevented that superheater bottom pipe from being buried by dust, increased heat-transfer effect.
In sum, the utlity model has superheater wearing and tearing little, the advantage of long service life, can bring superheater bottom dust stratification few, the beneficial effect that heat-transfer effect is good.
Brief description of the drawings
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail:
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
With reference to Fig. 1, superheater abrasion-resistant diversion provided by the utility model, comprises the flue 1 of coal-burning boiler and is arranged on the superheater 2 in flue 1, superheater 2 is existing product, its structure and mounting means, by described those skilled in the art are known, do not repeat them here.The vertical convection superheater of superheater 2 general employing.Flue 1 roof is provided with down the abrasionproof beam 3 of stretching, and abrasionproof beam 3 is positioned at the front of superheater 2, can block the front upper part of superheater 2.With the reinforcing bar of corrosion-and high-temp-resistant, for example use Cr25Ni20 reinforcing bar, roll bar-mat reinforcement by design shape, and carry out formwork by design size, build by high temperature resistant, resistance to erosion, corrosion resistant high-strength abrasion-proof castable inside, after coagulation forming, just can make abrasionproof beam 3, under abrasionproof beam 3, stretch and be highly generally 300-500mm.The inclined plane of the leading flank 5 of described abrasionproof beam 3 for turning forward from top to bottom and arranging.The leading flank of described abrasionproof beam 3 is preferably cambered surface with the transition face 6 that is connected of described flue 1 roof.Each surface of described abrasionproof beam 3 and described connection transition face are all preferably shiny surface.Under general situation, superheater more than 2 combs institute is above frayed heavier, and therefore on the front comb of superheater 2, cover is loaded onto wearing bush or loaded onto anti-abrasion cover 4, and to improve the abrasive resistance of superheater, shown in Fig. 1 is anti-abrasion cover 4.
Above-mentioned definite as described below about fore-and-aft direction, superheater 2 is front in face of the direction of flue gas, contrary direction is rear.
With reference to Fig. 1, the movement locus that the track in Fig. 1 shown in arrow is flue gas, i.e. flue gas rising runs into after abrasionproof beam 3, under the stopping of abrasionproof beam 3, can not contact with superheater 2 front upper parts, and the grit in flue gas is scattered downwards to flue diapire; Under the water conservancy diversion of abrasionproof beam 3 leading flanks, flue gas flows downward then to overturn and is back to flue bottom again, washes away the ash of depositing of flue bottom, makes bottom deposit grey measuring and reduces, superheater 2 front upper parts are caused under the situation of wearing and tearing reducing, the ash of depositing of flue bottom can also be washed away and takes away.
Claims (6)
1. a superheater abrasion-resistant diversion, comprises the flue (1) of coal-burning boiler and is arranged on the superheater (2) in flue (1), it is characterized in that flue (1) roof is provided with down the abrasionproof beam (3) of stretching and be positioned at superheater (2) front.
2. superheater abrasion-resistant diversion as claimed in claim 1, the leading flank that it is characterized in that described abrasionproof beam (3) is the inclined plane that turns forward from top to bottom and arrange.
3. superheater abrasion-resistant diversion as claimed in claim 2, is characterized in that the leading flank of described abrasionproof beam (3) and the transition face that is connected of described flue (1) roof are cambered surface.
4. superheater abrasion-resistant diversion as claimed in claim 3, is characterized in that each surface of described abrasionproof beam (3) and described connection transition face are shiny surface.
5. the superheater abrasion-resistant diversion as described in arbitrary claim in claim 1-4, it is characterized in that described abrasionproof beam (3) under stretch highly for 300-500mm.
6. superheater abrasion-resistant diversion as claimed in claim 1, is characterized in that being equipped with on the leading flank of front comb of described superheater (2) on the front comb of anti-abrasion cover (4) or described superheater (2) and is set with wearing bush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420180241.4U CN203836932U (en) | 2014-04-15 | 2014-04-15 | Abrasion-proof guiding device for overheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420180241.4U CN203836932U (en) | 2014-04-15 | 2014-04-15 | Abrasion-proof guiding device for overheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836932U true CN203836932U (en) | 2014-09-17 |
Family
ID=51514765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420180241.4U Expired - Fee Related CN203836932U (en) | 2014-04-15 | 2014-04-15 | Abrasion-proof guiding device for overheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203836932U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642054A (en) * | 2016-12-27 | 2017-05-10 | 安徽海螺川崎工程有限公司 | Superheater protective structure |
| CN111678110A (en) * | 2020-06-16 | 2020-09-18 | 四川陆亨能源科技有限公司 | Efficient anti-abrasion compact waste heat boiler applied to industrial silicon furnace |
-
2014
- 2014-04-15 CN CN201420180241.4U patent/CN203836932U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642054A (en) * | 2016-12-27 | 2017-05-10 | 安徽海螺川崎工程有限公司 | Superheater protective structure |
| CN111678110A (en) * | 2020-06-16 | 2020-09-18 | 四川陆亨能源科技有限公司 | Efficient anti-abrasion compact waste heat boiler applied to industrial silicon furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103398375B (en) | With the cyclone separator of circulating fluidized bed boiler of wear-resisting target area and guider | |
| CN105318535B (en) | A kind of single drum horizontal formula traveling-grate stoker sprays denitration corner tube boiler | |
| CN202012930U (en) | Local soot blowing device of W-shaped flame boiler | |
| CN203836932U (en) | Abrasion-proof guiding device for overheater | |
| CN205316303U (en) | Circulating fluidized bed boiler | |
| CN203478220U (en) | Novel cyclone separator of circulating fluidized bed boiler | |
| CN201875681U (en) | Vertical boiler burning dusty gas | |
| CN102580510A (en) | Integrated dedusting, denitration and desulfurating device for two-stage large water body group tower | |
| CN103398371B (en) | A kind of two low type boiler using high basic metal coal | |
| CN214468717U (en) | Fly ash collecting device for boiler steering flue | |
| CN204739601U (en) | Combustor secondary wind box ash exhauster | |
| CN207438615U (en) | Wall and downward-flow flue front wall junction abrasion-proof structure after waste heat boiler uptake flue | |
| CN201636836U (en) | Hyperbolic-curve type anti-wear cover plate | |
| CN105318309B (en) | A kind of pair of drum sprays denitration sedimentation separation corner tube boiler | |
| CN207936106U (en) | A kind of anti-wear system of π types boiler flue | |
| CN204943459U (en) | Circulating fluidized bed boiler water-cooling wall pipe abrasion-resistant diversion | |
| CN211551558U (en) | Tail U-shaped horizontal type waste heat boiler device | |
| CN207298916U (en) | A kind of biomass high-temperature super-pressure circulating fluidized bed boiler flue ash disposal system | |
| CN101813310B (en) | Hyperbolic type abrasion-proof cover plate | |
| CN211084120U (en) | Wear-resisting boiler water-cooling wall | |
| CN204176636U (en) | The wear-resisting accumulatingdust blow device of a kind of CFBB | |
| CN203772036U (en) | Sintering flue gas dust collecting and discharging device | |
| CN114151788B (en) | Secondary air pipe structure of circulating fluidized bed boiler | |
| CN201159532Y (en) | Inertial dust collection water cooling tube bundle of coal-burning boiler | |
| CN203115995U (en) | Heating device for circulating fluidized bed boiler |
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 |
Granted publication date: 20140917 Termination date: 20190415 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |