CN209213912U - A kind of structure slowing down water-cooling wall of power boiler high temperature corrosion - Google Patents
A kind of structure slowing down water-cooling wall of power boiler high temperature corrosion Download PDFInfo
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- CN209213912U CN209213912U CN201821229376.XU CN201821229376U CN209213912U CN 209213912 U CN209213912 U CN 209213912U CN 201821229376 U CN201821229376 U CN 201821229376U CN 209213912 U CN209213912 U CN 209213912U
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- station boiler
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Abstract
The utility model relates to a kind of structures for slowing down water-cooling wall of power boiler high temperature corrosion.Currently, most domestic station boiler all uses low nitrogen grading combustion technology, for reducing the discharge of nitrogen oxides, this is chronically at the water-cooling wall of high-temperature area in burner hearth under high-temperature reductibility atmosphere, and the nearly wall burning of coal dust easily causes the high temperature corrosion of water-cooling wall.The utility model includes Water Wall Tube in Station Boiler, fin and baffle；Water Wall Tube in Station Boiler is provided with multiple, and multiple Water Wall Tube in Station Boiler are connected by fin, and multiple Water Wall Tube in Station Boiler are arranged in rows；Baffle is fixed on the fin between adjacent 2 Water Wall Tube in Station Boiler, and baffle is arranged vertically with fin.The utility model can effectively reduce air-flow and wash away to water-cooling wall, the concentration of the sulfide contact water-cooling wall in flue gas be reduced, to reduce the probability of high temperature corrosion；The nearly wall burning for avoiding coal dust, reduces a possibility that high temperature fatigue cracks and overtemperature occurs.
Description
Technical field
The utility model relates to a kind of structures for slowing down water-cooling wall of power boiler high temperature corrosion.
Background technique
Currently, with the increasingly raising to environmental requirement, NOxThe requirement of discharge is tightened up, while boiler Xiang Geng great parameter
Development, the high temperature corrosion of the water-cooling wall safety to coal-burning boiler operation and economical produces very big influence.It is domestic
Most of station boiler all uses low nitrogen grading combustion technology, for reducing the discharge of nitrogen oxides, but fractional combustion skill
The application of art, so that the water-cooling wall of high-temperature area is chronically under high-temperature reductibility atmosphere in burner hearth, the nearly wall burning of coal dust is easily
The high temperature corrosion of water-cooling wall is caused, on the one hand increases the surface temperature of water-cooling wall；Still further aspect breeze airflow washes away water cooling
Wall surface accelerates corrosion constantly to be that corrosion product constantly falls off.
Utility model content
The purpose of this utility model is easily to cause water wall high temperature corrosion and coal dust gas for the nearly water-cooling wall burning of coal dust
Stream wash away wall-cooling surface can accelerated corrosion the fact, and provide and a kind of reasonable in design slow down water-cooling wall of power boiler high temperature
The structure of corrosion, the welding baffle on water-cooling wall fin stop breeze airflow to wash away water-cooling wall, while blocking the nearly wall of coal dust
Burning, has the function of slowing down water wall high temperature corrosion.
The technical scheme in the invention for solving the above technical problem is: it is rotten that one kind slowing down water-cooling wall of power boiler high temperature
The structure of erosion, which is characterized in that including Water Wall Tube in Station Boiler, fin and baffle；Water Wall Tube in Station Boiler
It is provided with multiple, multiple Water Wall Tube in Station Boiler are connected by fin, and multiple Water Wall Tube in Station Boiler are arranged in rows；
The baffle is fixed on the fin between adjacent 2 Water Wall Tube in Station Boiler, and the baffle is arranged vertically with fin.
Furthermore, the width of the baffle is 50mm-150mm, with a thickness of 5mm-8mm.
Furthermore, the material of the baffle is 20G, and the baffle is welded and fixed with fin.
Furthermore, the baffle is fixed on the fin between Water Wall Tube in Station Boiler by high temperature corrosion
On, the length of the baffle is identical as the length in high temperature corrosion region.Baffle could be secured to generating plant pulverized coal boiler, and there are high temperature
The local water cooling wall region of corrosion tendency, baffle longer for length can be segmented and weld.
Furthermore, the width of the baffle increases as the diameter of Water Wall Tube in Station Boiler increases.Relatively
It is smaller in the width of the diameter of Water Wall Tube in Station Boiler, baffle, and carried out in the region that critical high temperature corrosion is locally present
Welding installation, will not impact the aerodynamic field of entire burner hearth, while will not match and make to the caloric receptivity of boiler entirety
At influence.
Furthermore, the generating plant pulverized coal boiler phase of Water Wall Tube in Station Boiler and Terms of Corner Tangential Combustion
Match.
The utility model compared with prior art, has the following advantages that and effect: by Water Wall Tube in Station Boiler
Between fin on weld certain size baffle, can effectively reduce air-flow and water-cooling wall is washed away, can between baffle nearly water
Cold wall region forms one layer of wind film, the concentration of the sulfide contact water-cooling wall in flue gas is reduced, to reduce high temperature corrosion
Probability；The effect of baffle can make the edge of aerodynamic field and water-cooling wall form a small distance, avoid the nearly wall of coal dust
Burning reduces a possibility that high temperature fatigue cracks and overtemperature occurs.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model embodiment.
Fig. 2 is the overlooking structure diagram of the utility model embodiment.
In figure: Water Wall Tube in Station Boiler 1, fin 2, baffle 3.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Embodiment.
Referring to Fig. 1, Fig. 2, the structure for slowing down water-cooling wall of power boiler high temperature corrosion in the present embodiment includes station boiler
Water-cooling wall pipe 1, fin 2 and baffle 3.
Water Wall Tube in Station Boiler 1 is provided with multiple, and multiple Water Wall Tube in Station Boiler 1 is connected by fin 2, more
A Water Wall Tube in Station Boiler 1 is arranged in rows；Baffle 3 is fixed on the fin between adjacent 2 Water Wall Tube in Station Boiler 1
On 22, baffle 3 is arranged vertically with fin 2.
The width of baffle 3 is 50mm-150mm, with a thickness of 5mm-8mm, and the material of baffle 3 is 20G, and baffle 3 and fin 2 weld
Connect fixation.
Water Wall Tube in Station Boiler 1 and the generating plant pulverized coal boiler of Terms of Corner Tangential Combustion match, and baffle 3 is fixed on
By on the fin 2 between Water Wall Tube in Station Boiler 1 of high temperature corrosion, the length of baffle 3 and the length in high temperature corrosion region
Spend identical, the width of baffle 3 increases as the diameter of Water Wall Tube in Station Boiler 1 increases.
The present embodiment use process is as follows:
By above-mentioned elaboration, those skilled in the art can implement.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different, and above content is only to the utility model structure example explanation described in this specification.
All equivalence changes or simple change done according to structure, feature and principle described in the concept of the patent of the utility model, are wrapped
It includes in the protection scope of the utility model patent.Those skilled in the art of the present invention can be to described
Specific embodiment does various modifications or additions or is substituted in a similar manner, without departing from the knot of the utility model
Structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (3)
1. a kind of structure for slowing down water-cooling wall of power boiler high temperature corrosion, which is characterized in that sub including Water Wall Tube in Station Boiler,
Fin and baffle；Water Wall Tube in Station Boiler be provided with it is multiple, multiple Water Wall Tube in Station Boiler pass through fin connect
It connects, multiple Water Wall Tube in Station Boiler are arranged in rows；The baffle is fixed between adjacent 2 Water Wall Tube in Station Boiler
Fin on, the baffle is arranged vertically with fin；The width of the baffle is 50mm-150mm, with a thickness of 5mm-8mm；It is described
The material of baffle is 20G, and the baffle is welded and fixed with fin；Water Wall Tube in Station Boiler and corner tangential firing side
The generating plant pulverized coal boiler of formula matches.
2. the structure according to claim 1 for slowing down water-cooling wall of power boiler high temperature corrosion, which is characterized in that the baffle
It is fixed on the fin between Water Wall Tube in Station Boiler by high temperature corrosion, the length of the baffle and high temperature corrosion area
The length in domain is identical.
3. the structure according to claim 1 for slowing down water-cooling wall of power boiler high temperature corrosion, which is characterized in that the baffle
Width with Water Wall Tube in Station Boiler diameter increase and increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821229376.XU CN209213912U (en) | 2018-08-01 | 2018-08-01 | A kind of structure slowing down water-cooling wall of power boiler high temperature corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821229376.XU CN209213912U (en) | 2018-08-01 | 2018-08-01 | A kind of structure slowing down water-cooling wall of power boiler high temperature corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209213912U true CN209213912U (en) | 2019-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821229376.XU Active CN209213912U (en) | 2018-08-01 | 2018-08-01 | A kind of structure slowing down water-cooling wall of power boiler high temperature corrosion |
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| CN (1) | CN209213912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112192083A (en) * | 2020-09-26 | 2021-01-08 | 国家能源集团谏壁发电厂 | Construction process for preventing weld joint cracks of water wall pipe |
| CN114353045A (en) * | 2022-01-10 | 2022-04-15 | 西安交通大学 | Method and device for preventing and treating high-temperature corrosion of boiler water-cooled wall |
-
2018
- 2018-08-01 CN CN201821229376.XU patent/CN209213912U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112192083A (en) * | 2020-09-26 | 2021-01-08 | 国家能源集团谏壁发电厂 | Construction process for preventing weld joint cracks of water wall pipe |
| CN114353045A (en) * | 2022-01-10 | 2022-04-15 | 西安交通大学 | Method and device for preventing and treating high-temperature corrosion of boiler water-cooled wall |
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