CN208886825U - Novel adherent wind snout device - Google Patents
Novel adherent wind snout device Download PDFInfo
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- CN208886825U CN208886825U CN201820699300.7U CN201820699300U CN208886825U CN 208886825 U CN208886825 U CN 208886825U CN 201820699300 U CN201820699300 U CN 201820699300U CN 208886825 U CN208886825 U CN 208886825U
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- air
- air duct
- hole
- wind snout
- adherent wind
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Abstract
The utility model embodiment discloses a kind of novel adherent wind snout device, comprising: air source apparatus, fin outer side seal is connect between water screen tube；Air duct, air intake are connected to air source apparatus, and the through-hole that outlet air end passes through between water screen tube on fin extends in burner hearth, outlet air end be it is tubaeform, air duct passes through throughhole portions diameter and is less than through-hole.The present apparatus passes through air duct and through-hole collective effect, air-flow is separated into two parts of outer crosswind and interior crosswind, gap of the outer crosswind between the outside and through-hole of air duct enters, pass through the guide functions of tubaeform outlet air end, this part wind is set to form the round air film being covered on water-cooling wall, prevent the region from generating high temperature corrosion, air duct outer wall is avoided directly to wash away by high-temperature dust and cause to wear simultaneously, it can also lead to coking to avoid calm wind area is formed between air duct and water screen tube row, interior crosswind then passes through air duct center and flows out, spout overheat scaling loss can be effectively prevented as cooling wind.
Description
Technical field
The utility model relates to boiler anti-corrosions to lose technical field, more particularly to a kind of novel adherent wind snout device.
Background technique
In the operational process of coal-burning boiler, avoiding the high temperature corrosion of water-cooling wall is boiler of power plant safety economy stable operation
Premise.Increasingly strict with thermal power plant's environmental requirement, low nitrogen burning transformation has been increasingly becoming the main of boiler of power plant burning
One of means, and required oxygen debt burning situation is transformed in low nitrogen, will necessarily aggravate the high temperature of water-cooling wall in reducing atmosphere
Corrosion phenomenon, to accelerate the thinning process of water-cooling wall tube wall, boiler is given in the serious generation for resulting even in Waterwall tube failure
Safe and stable operation bring great hidden danger, influence unit operation safety and economy.Currently, the adherent wind of coal-burning boiler
Device is the important means for preventing coal-burning boiler water wall high temperature corrosion, its principle is by adherent wind snout device, in water
Cold wall surface covers one layer of air film, changes the oxygen deficient atmospheres of water cooling wall surface, and then avoids the generation of high temperature corrosion.
To solve the above-mentioned problems, the Chinese patent that Authorization Notice No. is CN 206831477U discloses a kind of coal-fired pot
The adherent wind snout device of furnace comprising one end connect the blast pipe that the other end protrudes into burner hearth with air source apparatus, and passes through company
The tubaeform conducting element that fitting is connected with blast pipe, air inlet tube inlet are arranged perpendicular to water screen tube, and conducting element exit flow is parallel
In water cooling wall surface.The device has the following problems that blast pipe only has inside ventilation, and outside passes through without cooling wind, is easy quilt
Furnace high-temperature dust washes away, and device is caused to wear.
Utility model content
The purpose of the utility model is to overcome above-mentioned technical deficiencies, propose a kind of novel adherent wind snout device, solution
The technical issues of certainly air duct outer surface is easy by high-temperature dust erosive wear in the prior art.
In order to reach above-mentioned technical purpose, the utility model embodiment provides a kind of novel adherent wind snout device,
It is arranged between the water screen tube between two neighboring water screen tube on fin, comprising:
Air source apparatus, fin outer side seal is connect between water screen tube；
Air duct, air intake are connected to air source apparatus, and through-hole of the outlet air end between water screen tube on fin extends to furnace
In thorax, outlet air end be it is tubaeform, air duct, which passes through throughhole portions diameter and is less than, through-hole and forms gap；
Wherein, air source apparatus is connected to gap.
Compared with prior art, the utility model has the following beneficial effects: the adherent wind snout device of the utility model
By the through-hole collective effect of fin between air duct and water screen tube, air-flow is separated into two parts of outer crosswind and interior crosswind, outside
Gap of the crosswind between the outside and through-hole of air duct enters, and by the guide functions of tubaeform outlet air end, makes this part wind shape
At the round air film being covered on water-cooling wall, the region can be effectively prevent to generate high temperature corrosion, while it is possible to prevente effectively from
Air duct outer wall directly washes away by high-temperature dust and causes to wear, and can also form nothing to avoid between air duct and water screen tube are arranged
Wind region and lead to coking, interior crosswind then passes through air duct center and flows out, as cooling wind can be effectively prevented spout overheat scaling loss,
Being also possible to prevent the slagging coking of spout end influences using effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of novel adherent wind snout device provided by the utility model；
Fig. 2 is the drawing in side sectional elevation that A-A goes out in Fig. 1.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
Referring to Figure 1 and Fig. 2, Fig. 1 be novel adherent wind snout device provided by the utility model structural schematic diagram；
Fig. 2 is the drawing in side sectional elevation that A-A goes out in Fig. 1.
Novel adherent wind snout device includes: air source apparatus 1, air duct 2 and fixing rib 3.
Air source apparatus 1 is arranged in 5 outside of fin between water screen tube, and fin 5 is tightly connected between water screen tube, water-cooling wall
Through-hole is offered between pipe on fin 5, through-hole is connected to air source apparatus 1.In the present embodiment, air source apparatus 1 selects static pressure bellows, with
Guarantee jet-impingement more evenly, and in use, the total blast volume that air source apparatus sprays should be lower than boiler total blast volume
4%, avoid strong wind rate from having an adverse effect the low nitrogen anoxycausis state in primary zone.
The air intake of air duct 2 is connected to air source apparatus 1, and through-hole of the outlet air end between water screen tube on fin 5 extends to
In burner hearth, outlet air end is tubaeform.Air duct 2 passes through through-hole, and the diameter of the part passed through is less than through-hole, so that existing between the two
Gap.Meanwhile 2 center line of air duct is overlapped with through hole center line, and 2 center line of air duct also with 4 central axis of water screen tube.
In the present embodiment, air duct 2 uses heat resisting steel integral casting forming, and oxidation resistance temperature is not less than 1200 DEG C.
Fixing rib 3 is evenly arranged around 2 center line of air duct, and side is fixedly connected with 2 outside of air duct, and the other side is fixedly connected logical
On the inside of hole.In the present embodiment, the quantity of fixing rib 3 is generally three to six, four is chosen in the present embodiment, with air duct 2
It is integrated casting and forming.3 through-hole of fixing rib is welded to connect, and pad is located on the outside of burner hearth, it is possible to prevente effectively from complicated work in furnace
Condition causes solder joint desoldering.
Air duct and through-hole collective effect, are separated into two parts of outer crosswind and interior crosswind for air-flow, outer crosswind is not only protected
It is not washed away by high-temperature dust on the outside of air duct, and avoids forming calm wind area between air duct and water screen tube row and causing to tie
It is burnt；Interior crosswind prevents spout from overheating as cooling wind, while being also prevented from spout coking.
Implement the utility model embodiment, has the following beneficial effects: that the adherent wind snout device of the utility model passes through
Air-flow is separated into two parts of outer crosswind and interior crosswind, outer crosswind by the through-hole collective effect of fin between air duct and water screen tube
Gap between the outside and through-hole of air duct enters, and by the guide functions of tubaeform outlet air end, covers the formation of this part wind
The round air film on water-cooling wall is covered, the region can be effectively prevent to generate high temperature corrosion, while it is possible to prevente effectively from air duct
Outer wall directly washes away by high-temperature dust and causes to wear, and can also form zone of silence to avoid between air duct and water screen tube are arranged
Domain and lead to coking, interior crosswind then passes through air duct center and flows out, as cooling wind can be effectively prevented spout overheat scaling loss, can also
To prevent the slagging coking of spout end from influencing using effect.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (9)
1. a kind of novel adherent wind snout device, which is characterized in that it is arranged in the water cooling between two neighboring water screen tube
Between wall pipe on fin, comprising:
Air source apparatus, fin outer side seal is connect between the water screen tube；
Air duct, air intake are connected to the air source apparatus, and through-hole of the outlet air end between the water screen tube on fin extends
To burner hearth, the outlet air end be it is tubaeform, the air duct pass through the throughhole portions diameter be less than the through-hole and formed between
Gap；
Wherein, the air source apparatus is connected to the gap.
2. novel adherent wind snout device according to claim 1, which is characterized in that the air duct center line with it is described
Through hole center line is overlapped.
3. novel adherent wind snout device according to claim 2, which is characterized in that the air duct center line with it is described
Water screen tube central axis.
4. novel adherent wind snout device according to claim 3, which is characterized in that the novel adherent wind snout
Device further includes multiple fixing ribs, and the fixing rib is evenly arranged around the air duct center line, and side is fixedly connected with the wind
Cylinder outside, the other side are fixedly connected on the inside of the through-hole.
5. novel adherent wind snout device according to claim 4, which is characterized in that the quantity of the fixing rib is three
To six.
6. novel adherent wind snout device according to claim 4, which is characterized in that the fixing rib and the air duct
It is integrated cast structure.
7. novel adherent wind snout device according to claim 4, which is characterized in that the fixing rib and the through-hole
Welding.
8. novel adherent wind snout device according to claim 4, which is characterized in that the fixing rib and the through-hole
It is clamped by buckle.
9. novel adherent wind snout device according to claim 1, which is characterized in that the air source apparatus is static pressure wind
Case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820699300.7U CN208886825U (en) | 2018-05-10 | 2018-05-10 | Novel adherent wind snout device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820699300.7U CN208886825U (en) | 2018-05-10 | 2018-05-10 | Novel adherent wind snout device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208886825U true CN208886825U (en) | 2019-05-21 |
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ID=66494997
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820699300.7U Active CN208886825U (en) | 2018-05-10 | 2018-05-10 | Novel adherent wind snout device |
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| Country | Link |
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| CN (1) | CN208886825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110372057A (en) * | 2019-07-15 | 2019-10-25 | 上海发电设备成套设计研究院有限责任公司 | A kind of wastewater treatment flue evaporator of anti-wall surface dust stratification |
-
2018
- 2018-05-10 CN CN201820699300.7U patent/CN208886825U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110372057A (en) * | 2019-07-15 | 2019-10-25 | 上海发电设备成套设计研究院有限责任公司 | A kind of wastewater treatment flue evaporator of anti-wall surface dust stratification |
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