CN206709111U - A kind of biomass boiler Secondary Air blowing system - Google Patents
A kind of biomass boiler Secondary Air blowing system Download PDFInfo
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- CN206709111U CN206709111U CN201720334328.6U CN201720334328U CN206709111U CN 206709111 U CN206709111 U CN 206709111U CN 201720334328 U CN201720334328 U CN 201720334328U CN 206709111 U CN206709111 U CN 206709111U
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- ajutage
- secondary air
- biomass boiler
- blowing system
- air
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Abstract
The utility model belongs to biomass boiler equipment, and in particular to a kind of biomass boiler Secondary Air blowing system.A kind of biomass boiler Secondary Air blowing system, including N root ajutages, the every ajutage connect same root main pipe respectively, and an air quantity regulation door is equipped with ajutage；The circular steel plate in the rectangle air port of 8mm length is cut among described air quantity regulation Men Weiyi blocks, air quantity regulation door is arranged at the air port of ajutage.The utility model is about ∮ 50 due to former 10T biomass boilers Secondary Air air port internal diameter, air port is too big, blast is low, wind speed is low, causes air distribution unreasonable, therefore improvement project has cut the circular steel plate of 8mm or so strips for one piece of centre of weldering, so as to which each ajutage improves blast and wind speed, Secondary Air main pipe is changed to outside furnace wall in addition, damper is set in each airduct entrance, it is convenient to adjust air distribution.
Description
Technical field
The utility model belongs to biomass boiler equipment, and in particular to a kind of biomass boiler Secondary Air blowing system.
Background technology
It is used for the address that the air-supply of oxygen amount is provided for fuel in thermal power plant.The air quantity of Secondary Air in First air, three times
It is maximum in wind, sizable ratio is occupied in total blast volume.Secondary Air is the independent air for being sent into burner hearth, each secondary air duct
Air mass flow and assignment of traffic situation directly influence aerodynamic field and temperature field in burner hearth.In order to meet to catch fire, flame
The service requirements such as stabilization, Load Regulation, the regulation of overheat temperature, slagging prevention slagging, control production rate, efficiency of combustion optimization, must
The flow of each secondary air channel must be reasonably configured, makes biomass fuel after-flame in combustion, to improve boiler efficiency.
In boiler operatiopn, the appropriate wind speed of each secondary air channel holding and wind rate, are to establish normal furnace air
Aerodynamic field and the necessary condition for realizing stable burning.Because Secondary Air has of a relatively high wind speed and occupies relatively strong winds rate, because
This Secondary Air is very big to the aerodynamic field in stove and temperature profile effect.If Secondary Air is unbalance or unstability, so that it may can induce
A series of abnormal operating modes such as Boiler Furnace slagging, efficiency of combustion decline, shakiness of catching fire.Generally, Secondary Air is unbalance refers to that same layer is secondary
The air quantity of wind can not keep in balance, and Secondary Air unstability refers to the air quantity arteries and veins that certain secondary air channel occurs in given throttle opening
Dynamic, both operating modes are all directly related with the structure of secondary air duct.Therefore, the structure of depth study of second wind system is special to flow
Property influence, be beneficial to improve biomass boiler combustion process, improve boiler efficiency.
Utility model content
The purpose of this utility model is to provide a kind of biomass boiler Secondary Air blowing system.
What the purpose of this utility model was realized in：
A kind of biomass boiler Secondary Air blowing system, including N root ajutages, the every ajutage connect same respectively
Root main pipe, an air quantity regulation door is equipped with ajutage；The rectangle of 8mm length is cut among described air quantity regulation Men Weiyi blocks
The circular steel plate in air port, air quantity regulation door are arranged at the air port of ajutage.
Also include Secondary Air wind distributing hole, described Secondary Air wind distributing hole is made up of outer layer and internal layer, is provided with number two layers
The equal wind distributing hole of amount, size and location.
Described outer layer is fixed with ajutage initiating terminal, and internal layer is fixed in the rotating shaft at outer layer center.
Described ajutage is respectively arranged at the upper of wall behind the upper end, lower end and incinerator burner hearth of incinerator burner hearth front wall
End, lower end.
The ajutage of described front wall upper end and the ajutage of the Hou Qiang upper ends tilt down 15-30 ° in the horizontal direction
Set；The ajutage of front wall lower end and the ajutage of Hou Qiang lower ends tilt down 8-12 ° of setting in the horizontal direction.
The ajutage of described front wall upper end and the ajutage of the Hou Qiang upper ends select straight tube；The ajutage of front wall lower end
Anemostat is selected with the ajutage of Hou Qiang lower ends.
The diffusion angle of the anemostat is 20-25 °.
Described ajutage is connected in a main pipe, and main pipe is arranged on outside furnace wall, is set in each airduct entrance
Regulating valve 7, main pipe connection wind regime and corresponding burner.
The wind regime is bellows or air blower.
The beneficial effects of the utility model are：
The utility model is because former 10T biomass boilers Secondary Air air port internal diameter is about ∮ 50, and air port is too big, and blast is low, wind
Speed is low, causes air distribution unreasonable, therefore improvement project has cut the circular steel plate of 8mm or so strips for one piece of centre of weldering, so as to every
Individual ajutage improves blast and wind speed, in addition changes Secondary Air main pipe to outside furnace wall, sets and adjusts in each airduct entrance
Air door, it is convenient to adjust air distribution.
Brief description of the drawings
Fig. 1 is overall structure figure of the present utility model.
Fig. 2 is the structure chart that air quantity adjusts door.
Fig. 3 is the structure chart of wind distributing hole.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings.
As Figure 1-3, a kind of biomass boiler Secondary Air blowing system, including N roots ajutage 1, the every air-supply
Pipe connects same root main pipe 2 respectively, and an air quantity regulation door is equipped with ajutage；The wind regime is bellows or air blower；Institute
The circular steel plate 3 in the rectangle air port of 8mm length is cut among the air quantity regulation Men Weiyi blocks stated, air quantity regulation door is arranged on ajutage
Air port at.The structure design principle is due to that former 10T biomass boilers Secondary Air air port internal diameter is about ∮ 50, and air port is too big, wind
Forcing down, wind speed is low, causes air distribution unreasonable, therefore improvement project has cut the circular steel plate of 8mm or so strips for one piece of centre of weldering,
So as to which each ajutage improves blast and wind speed.
The utility model also includes Secondary Air wind distributing hole 4, and described Secondary Air wind distributing hole is made up of outer layer and internal layer, two layers
It is provided with the equal wind distributing hole of quantity, size and location.Described outer layer is fixed with ajutage initiating terminal, and internal layer is fixed on
In the rotating shaft at outer layer center.Internal layer can rotate.When needing stronger Secondary Air, the neck on internal layer is stirred with iron wire, is revolved
Turn internal layer, inside and outside two layers wind distributing hole to the state being completely superposed, intake is reached maximum；When the weaker Secondary Air of needs
When, then the wind distributing hole on inside and outside two layers is rotated to partially overlapping, wind distributing hole is in half-open position, and intake is reduced；If completely
When not needing Secondary Air, then rotation to wind distributing hole completely closed state.The structure can coordinate air quantity regulation door to carry out air quantity
Compound regulation.
Described ajutage is respectively arranged at the upper of wall 6 behind the upper end, lower end and incinerator burner hearth of incinerator burner hearth front wall 5
End, lower end.
The ajutage of described front wall upper end and the ajutage of the Hou Qiang upper ends tilt down 15-30 ° in the horizontal direction
Set；The ajutage of front wall lower end and the ajutage of Hou Qiang lower ends tilt down 8-12 ° of setting in the horizontal direction.
The ajutage of described front wall upper end and the ajutage of the Hou Qiang upper ends select straight tube；The ajutage of front wall lower end
Anemostat is selected with the ajutage of Hou Qiang lower ends.
The diffusion angle of the anemostat is 20-25 °.
The characteristics of the utility model utilizes lower portion of furnace body space larger increases by 2 row's overfire air ports, with front-back wall upper end two
Secondary wind facies, which coordinates, can realize that " fractional combustion " can advantageously reduce the generation of NOx in stove, and the presence gesture of lower Secondary Air
It must can promote the mixed combustion of " small range ", so as to increase the burn-off rate of incinerator bottom, can also be put using oxidation reaction
The heat gone out is stablized flame combustion and heated into stove rubbish, while increases the adaptability to high-moisture house refuse；On front-back wall
Secondary Air designs for straight tube, increases jet rigidity and penetration capacity, can play and be thoroughly mixed air and uncombusted fuel gas
Effect, upper Secondary Air tilt angled down increases gas residence time；Lower secondary air channel is anemostat, is staggeredly arranged up and down, can be with
Increase gas residence time and formation " small range " mixing and burning, heat caused by scattered oxidation reaction, effectively avoid burner hearth
High-temperature area caused by bottom, play a part of suppressing thermal NO x generations.
Described ajutage is connected in a main pipe, and main pipe is arranged on outside furnace wall, is set in each airduct entrance
Regulating valve.Main pipe connects wind regime and corresponding burner.Secondary Air main pipe is changed to outside furnace wall, set in each airduct entrance
Damper is put, it is convenient to adjust air distribution.
Specific embodiment of the present utility model described above, the restriction to scope of protection of the utility model is not formed.
Any various other corresponding changes and deformation according to made by technical concept of the present utility model, it should be included in this practicality
In new scope of the claims.
Claims (9)
1. a kind of biomass boiler Secondary Air blowing system, including N root ajutages, the every ajutage connect same root respectively
Main pipe, an air quantity regulation door is equipped with ajutage；It is characterized in that：Cut among described air quantity regulation Men Weiyi blocks
The circular steel plate in the rectangle air port of 8mm length, air quantity regulation door are arranged at the air port of ajutage.
A kind of 2. biomass boiler Secondary Air blowing system according to claim 1, it is characterised in that：Also include Secondary Air
Wind distributing hole, described Secondary Air wind distributing hole are made up of outer layer and internal layer, and it is equal to be provided with quantity, size and location two layers
Wind distributing hole.
A kind of 3. biomass boiler Secondary Air blowing system according to claim 2, it is characterised in that：Described outer layer with
Ajutage initiating terminal is fixed, and internal layer is fixed in the rotating shaft at outer layer center.
A kind of 4. biomass boiler Secondary Air blowing system according to claim 1, it is characterised in that：Described ajutage
It is respectively arranged at upper end, the lower end of wall behind the upper end, lower end and incinerator burner hearth of incinerator burner hearth front wall.
A kind of 5. biomass boiler Secondary Air blowing system according to claim 4, it is characterised in that：On described front wall
The ajutage at end and the ajutage of the Hou Qiang upper ends tilt down 15-30 ° of setting in the horizontal direction；The ajutage of front wall lower end
8-12 ° of setting is tilted down in the horizontal direction with the ajutage of Hou Qiang lower ends.
A kind of 6. biomass boiler Secondary Air blowing system according to claim 5, it is characterised in that：On described front wall
The ajutage at end and the ajutage of the Hou Qiang upper ends select straight tube；The ajutage of front wall lower end and the ajutage choosing of Hou Qiang lower ends
Use anemostat.
A kind of 7. biomass boiler Secondary Air blowing system according to claim 6, it is characterised in that：The anemostat
Diffusion angle is 20-25 °.
A kind of 8. biomass boiler Secondary Air blowing system according to claim 1, it is characterised in that：Described ajutage
Be connected in a main pipe, main pipe is arranged on outside furnace wall, each airduct entrance set regulating valve, main pipe connection wind regime and
Corresponding burner.
A kind of 9. biomass boiler Secondary Air blowing system according to claim 8, it is characterised in that：The wind regime is wind
Case or air blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720334328.6U CN206709111U (en) | 2017-03-31 | 2017-03-31 | A kind of biomass boiler Secondary Air blowing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720334328.6U CN206709111U (en) | 2017-03-31 | 2017-03-31 | A kind of biomass boiler Secondary Air blowing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206709111U true CN206709111U (en) | 2017-12-05 |
Family
ID=60467477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720334328.6U Active CN206709111U (en) | 2017-03-31 | 2017-03-31 | A kind of biomass boiler Secondary Air blowing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206709111U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251433A (en) * | 2021-03-17 | 2021-08-13 | 西安交通大学 | Rotatable square overgrate air baffle |
-
2017
- 2017-03-31 CN CN201720334328.6U patent/CN206709111U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251433A (en) * | 2021-03-17 | 2021-08-13 | 西安交通大学 | Rotatable square overgrate air baffle |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 238200 Huaxing logistics channel 1, Anhui fine chemical base, Wujiang Town, he County, Ma'anshan City, Anhui Province Patentee after: MAANSHAN Yongqiang Energy Saving Technology Co.,Ltd. Address before: 317000 No. 69, Yicheng Road, Gucheng street, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG DONGDU ENERGY SAVING TECHNOLOGY Co.,Ltd. |