CN201003767Y - Circulated fluid bed boiler vertical water cooling wall abrasive-proof groove - Google Patents
Circulated fluid bed boiler vertical water cooling wall abrasive-proof groove Download PDFInfo
- Publication number
- CN201003767Y CN201003767Y CNU2007200893149U CN200720089314U CN201003767Y CN 201003767 Y CN201003767 Y CN 201003767Y CN U2007200893149 U CNU2007200893149 U CN U2007200893149U CN 200720089314 U CN200720089314 U CN 200720089314U CN 201003767 Y CN201003767 Y CN 201003767Y
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- China
- Prior art keywords
- groove
- water screen
- wearing
- vertical water
- pipe
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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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Abstract
The utility model discloses a circulating fluid bed boiler upright water screen wearing groove, which comprises a wearing stage which is fixed at the surface of the water screen flatly. The wearing stage is a groove structure whose outer brim extends upwards. The downside of the wearing stage is provided with a carriage which is a triangle strengthened board. Seal the wearing groove flatly on an upright water screen and the four-side upright water screen forms a loopy beam. The wearing groove can be arranged in a multilayer on the surface of the water screen from one to three meters. The big flow clinging upright water screen pipe surface and the wall flow of the pipe-between groove meet the dust stratification of the wearing groove and are gently prevented to decelerate the wall flow gradually. Thus, the wall flow greatly reduces the abrasion of the upright water screen pipe on the wearing groove. In the same time, the flow overflowed by the wearing groove still flows from the surface of the water screen pipe and the pipe-between groove without clinging to the surface. Therefore, the wall flow also greatly reduces the abrasion of the upright water screen pipe below the wearing groove.
Description
Technical field
The utility model relates to CFBB, especially relates to the anti-slot grinding of CFBB vertical water wall.
Background technology
China uses the maximum country of CFBB (CFB boiler) in power plant in the world, and the big or small recirculating fluidized bed station boiler that has moved has more than 2000, and wherein the above large-size circulating fluidized bed station boiler of 410t/h has nearly more than 200.The vertical water wall that CFB boiler four sides vertical wall (pipe) is formed (pipe row) is the important heating surface of boiler, tens meters of height, and the square-section girth of level also has tens meters, is the vitals that guarantees the high efficiency boiler operation.The CFB boiler is in operation and produces the adherent ash stream of being close to groove between vertical water-wall tube row surface and pipe of top-down big flow, this adherent grey stream can not be run into any protrusion, and any projection that groove exists between vertical water-wall tube row surface and pipe or even the projection of not enough 1mm all can cause vertical water-wall tube row's heavy wear.At present because still there is the problem that the vertical water wall heating surface wear is serious, abrasionproof is taken effective measures in the CFB boiler, many boiler operatiopn times, the not long water screen tube wearing and tearing booster that promptly occurs was revealed, because the accident that the vertical water wall wearing and tearing cause is near 50% of boiler breakdowns blowing out sum.Used is to be provided with boss (level is protruded the hundreds of millimeter) on the vertical water wall of CFB boiler four sides, purpose is to go soft the washing away of adherent ash stream that stop with the certain thickness ash that accumulates on the boss, but result of use is undesirable, mainly be to deposit ash on the boss seldom, be difficult to play the soft effect that stops adherent ash stream, do not accomplish to make adherent ash stream to slow down gradually, thus adherent ash stream to vertical water-wall tube particularly near the water screen tube the horizontal ledge wear and tear still serious.Mostly the horizontal ledge of using at present is to add the hook nail moulding with refractory material in addition, needs slow baking remove moisture gradually, constructs complicated, long in time limit and cost is high.
The utility model content
The purpose of this utility model be to provide a kind of simple in structure, be convenient to install and the anti-slot grinding of CFBB vertical water wall that abrasionproof is effective.
For achieving the above object, the utility model can be taked following technical proposals:
CFBB vertical water wall described in the utility model is prevented slot grinding, comprises the abrasionproof platform that is horizontally fixed on the vertical water wall surface, and described abrasionproof platform is the upwardly extending groove structure of outward flange.
The bottom of described abrasionproof platform is provided with bracing frame.
Described bracing frame is the triangle stiffener.
Advantage of the present utility model is that the abrasionproof platform is the upwardly extending groove structure of outward flange, this anti-slot grinding horizontal welding is connected on the vertical water wall surface, will form a ring recess beam on the vertical water wall face of four sides, anti-slot grinding can be arranged in vertical water wall surface multilayer, 1-3 rice does not wait at interval, the dust stratification of running in the anti-slot grinding when the adherent grey stream of being close to groove between vertical water-wall tube row surface and pipe of big flow is then stopped by soft, make adherent ash stream slow down gradually (just look like the pond to diver soft water is the same slow down gradually), adherent like this ash stream just reduces greatly to the wearing and tearing of the vertical water-wall tube on the anti-slot grinding, the ash stream that overflows from anti-slot grinding still flows down along groove between vertical water-wall tube row surface and pipe but can not be close to the surface simultaneously, so the wearing and tearing that adherent ash flows the vertical water-wall tube under the anti-slot grinding also reduce greatly.For preventing the slot grinding distortion, can bracing frame be set in the bottom of abrasionproof platform, as being out of shape to prevent the abrasionproof groove at the bottom of anti-slot grinding weldering triangle stiffener.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 be Figure 1A-A to cutaway view.
Fig. 3 be Fig. 2 B-B to cutaway view.
The specific embodiment
As shown in the figure, CFBB vertical water wall described in the utility model is prevented slot grinding, comprises the abrasionproof platform 2 that is horizontally fixed on vertical water wall 1 surface, and described abrasionproof platform 2 is the upwardly extending groove structure of outward flange; For preventing the slot grinding distortion, be provided with triangle stiffener 3 in the bottom of described abrasionproof platform 2.
Claims (3)
1, the anti-slot grinding of a kind of CFBB vertical water wall comprises the abrasionproof platform (2) that is horizontally fixed on vertical water wall (1) surface, and it is characterized in that: described abrasionproof platform (2) is the upwardly extending groove structure of outward flange.
2, the anti-slot grinding of CFBB vertical water wall according to claim 1, it is characterized in that: the bottom of described abrasionproof platform (2) is provided with bracing frame.
3, the anti-slot grinding of CFBB vertical water wall according to claim 2, it is characterized in that: described bracing frame is triangle stiffener (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200893149U CN201003767Y (en) | 2007-01-29 | 2007-01-29 | Circulated fluid bed boiler vertical water cooling wall abrasive-proof groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200893149U CN201003767Y (en) | 2007-01-29 | 2007-01-29 | Circulated fluid bed boiler vertical water cooling wall abrasive-proof groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201003767Y true CN201003767Y (en) | 2008-01-09 |
Family
ID=39039304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200893149U Expired - Fee Related CN201003767Y (en) | 2007-01-29 | 2007-01-29 | Circulated fluid bed boiler vertical water cooling wall abrasive-proof groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201003767Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566341A (en) * | 2009-05-21 | 2009-10-28 | 刘少光 | Exponential flow-resisting frame used for reducing abrasion of circulating fluidized bed boiler water-cooling wall |
| CN102853423A (en) * | 2012-10-20 | 2013-01-02 | 郑州华宇耐磨制品有限公司 | Wear resisting method for water wall tubes of circulating fluidized bed boiler |
| CN102913901A (en) * | 2012-11-09 | 2013-02-06 | 瓮福（集团）有限责任公司 | Wear-resistant device of water cooling pipe wall of circulation fluidized bed boiler |
-
2007
- 2007-01-29 CN CNU2007200893149U patent/CN201003767Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566341A (en) * | 2009-05-21 | 2009-10-28 | 刘少光 | Exponential flow-resisting frame used for reducing abrasion of circulating fluidized bed boiler water-cooling wall |
| CN102853423A (en) * | 2012-10-20 | 2013-01-02 | 郑州华宇耐磨制品有限公司 | Wear resisting method for water wall tubes of circulating fluidized bed boiler |
| CN102853423B (en) * | 2012-10-20 | 2015-07-29 | 郑州华宇耐磨制品有限公司 | The anti-wearing method of circulating fluidized bed boiler water-cooling wall pipe |
| CN102913901A (en) * | 2012-11-09 | 2013-02-06 | 瓮福（集团）有限责任公司 | Wear-resistant device of water cooling pipe wall of circulation fluidized bed boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 Termination date: 20100129 |