CN208332313U - Secondary Air penetration power enhancing structure for biomass shaped fuel boiler - Google Patents
Secondary Air penetration power enhancing structure for biomass shaped fuel boiler Download PDFInfo
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- CN208332313U CN208332313U CN201820910519.7U CN201820910519U CN208332313U CN 208332313 U CN208332313 U CN 208332313U CN 201820910519 U CN201820910519 U CN 201820910519U CN 208332313 U CN208332313 U CN 208332313U
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- secondary air
- penetration power
- shaped fuel
- fuel boiler
- installation axle
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Abstract
The utility model discloses the Secondary Air penetration power enhancing structures for biomass shaped fuel boiler, including furnace body, several secondary air channels of inboard wall of furnace body are set, swirl nozzle is arranged towards one end of furnace interior in the secondary air channel, the swirl nozzle includes installation axle, blade, N block blade is circumferentially uniformly fixed on the mounting shaft, the installation axle and secondary air channel is relatively fixed and the axis of installation axle is parallel to the axis of secondary air channel, the axis of the installation axle intersects with plane where blade surface, wherein N >=3.The purpose of this utility model is to provide the Secondary Air penetration power enhancing structures for biomass shaped fuel boiler, to solve the problems, such as that the penetration power of Secondary Air and perturbation are poor in the prior art, the penetration power of Secondary Air and the purpose of perturbation can be improved by low cost by realizing.
Description
Technical field
The utility model relates to field of boilers, and in particular to the Secondary Air penetration power for biomass shaped fuel boiler increases
Strong structure.
Background technique
Biomass fuel is by agricultural crop straw, sawdust, sawdust, peanut shell, corncob, rice husk, branch, leaf, hay
The fuel directly utilized by compression forming is a kind of reproducible clean energy resource without any additive and binder.In
The requirement of magnificent people's republic's " Renewable Energy Law ", National Development and Reform Committee have worked out " in renewable energy in the tissue of in August, 2006
Long-range developmental program ", the developing goal and task of renewable energy to 2020 in 2010 are proposed, and it is solid to establish biomass
Status of the body formed fuel as modern clean energy resource.Biomass molding fuel is as boiler oil, its burning time is long, by force
It is high and economical and practical to change burner hearth temperature, while no pollution to the environment, is the high-quality environmental protection combustion for substituting conventional fossil energy
Material.Biomass molding fuel is equably opened up on upper fire-grating from feed opening or top, after igniting, air-introduced machine is opened, in fuel
Volatile, flame burn downwards, quickly form high-temperature region in the region that unburned band, suspension fire grate are constituted, are continuous steady
Fixed kindling creates condition, less than upper fire-grating gap and the hot fuel and uncombusted particle of volatile matter after-flame, in air inducing
Under the action of machine and gravity, downwards to fall while burning, falls on the very high suspension fire grate of temperature after slightly stopping and continue
Land, finally fall on lower fire grating, imperfect combustion fuel particle burns away, and the soot particle of after-flame drops into ash discharge from lower fire grating
The ash bucket of device is opened out composite plate and is discharged together when dust stratification is to certain altitude.During fuel land, Secondary Air
Mouth supplements certain oxygen, for suspension combustion.
However, the generally existing cloth of existing biomass shaped fuel boiler is uneven, Secondary Air penetration power is poor, lead to furnace
Interior cloth wind is uneven, and local temperature difference is big in burner hearth, and some region oxygen-excess combustion temperature are excessively high or even cause coking and some regions
Since anoxic leads to insufficient over-emitting black exhaust that burns.The overfiren air port in the prior art that has its source in of the above problem is direct-firing
Nozzle, the penetration power and perturbation of Secondary Air are poor, the flue gas undercompounding that leads to peroxide region and anoxic zones, burning not
Sufficiently.Settling mode regarding to the issue above is mostly direct replacement secondary air fan, improves Secondary Air pressure head in the prior art, but
It is that this settling mode cost is very high and the wind pressure condition and range that can be provided by more ventilating fan is limited always.
Utility model content
The purpose of this utility model is to provide the Secondary Air penetration power enhancing structure for biomass shaped fuel boiler,
To solve the problems, such as that the penetration power of Secondary Air and perturbation are poor in the prior art, Secondary Air can be improved by low cost by realizing
Penetration power and perturbation purpose.
The utility model is achieved through the following technical solutions:
For the Secondary Air penetration power enhancing structure of biomass shaped fuel boiler, including furnace body, setting are in inboard wall of furnace body
Several secondary air channels, the secondary air channel towards furnace interior one end be arranged swirl nozzle, the swirl nozzle include peace
Axis, blade are filled, N block blade is circumferentially uniformly fixed on the mounting shaft, and the installation axle is relatively fixed with secondary air channel and installs
The axis of axis is parallel to the axis of secondary air channel, and the axis of the installation axle intersects with plane where blade surface, wherein N >=3.
For the problem that the penetration power of biomass shaped fuel boiler inner second air in the prior art and perturbation are poor, originally
Utility model proposes the Secondary Air penetration power enhancing structure for being used for biomass shaped fuel boiler, and the furnace body of this structure is existing
The furnace body of biomass shaped fuel boiler, inner wall are distributed with several secondary air channels, and each secondary air channel is towards furnace interior
One end is both provided with swirl nozzle, and swirl nozzle includes installation axle, blade, and N block blade is circumferentially uniformly fixed on the mounting shaft,
And installation axle and secondary air channel are relatively fixed, therefore blade is also at relatively-stationary state for secondary air channel,
Therefore all blades are all fixed relative to secondary air channel, and plane where the axis due to installation axle and blade surface
Intersection refers to that the axis of installation axle is not parallel to blade surface, the wind that secondary air fan is blasted along secondary air channel axis
It is flowed to furnace interior, therefore the flow direction of wind is the axis direction along installation axle, by leaf in flow process before wind direction
Piece is oriented to form eddy flow, and the outlet end of each secondary air channel forms eddy flow by swirl nozzle, to greatly improve
The penetration power and perturbation of Secondary Air, so that the flue gas of peroxide region and anoxic zones is more fully mixed, so that raw
The burning of substance shaped fuel boiler internal is more abundant.The utility model structure is simple, direct compared to existing convenient for setting
The mode for replacing secondary air fan, can greatly reduce cost, have extremely strong economic benefit.
Preferably, the angle of the blade surface and installation axle axis is α, 20 ° of 40 ° of < α <.In this programme to blade with
The relative positional relationship of installation axle is further limited, and preferably the angle of blade surface and installation axle axis is at 20 °~40 °
In the range of, this angle inward turning flow nozzle is formed by eddy flow with very strong disturbance ability, is conducive to improve the utility model
Using effect.
Preferably, the swirl nozzle is located inside secondary air channel, and all blades, which are fixed with the inner wall of secondary air channel, to be connected
It connects.Directly swirl nozzle is arranged inside secondary air channel in this programme, institute can be set in boiler furnace manufacturing process
Some swirl nozzles realize the stabilization of blade and installation axle by the fixed all blades of the inner wall of secondary air channel.This programme is special
Suitable for new biomass shaped fuel boiler.
Preferably, the sleeve being connected with secondary air channel is arranged in the inboard wall of furnace body, and the sleeve is fixedly connected with furnace body,
The swirl nozzle is arranged in sleeve.This programme is suitable for the improvement of traditional furnace body, it is only necessary to which swirl nozzle is mounted on sleeve
It is interior, then sleeve is fixed at the secondary air channel inside traditional boiler furnace, so that sleeve is connected with secondary air channel.
This programme can just complete the improvement to conventional boiler by extremely low cost and process so that conventional boiler also can be realized it is logical
The penetration power of Secondary Air and the purpose of perturbation can be improved by crossing low cost.
Preferably, all blades in the sleeve are fixedly connected with the inner wall of sleeve.Ensure between blade and sleeve
Stable structure is able to bear the greater pressure of high-pressure blast.
Preferably, the sleeve and furnace body weld, and sleeve is made by stainless steel material.
Preferably, the blade quantity connected in every installation axle is four.
Preferably, the swirl nozzle is spirally distributed in inboard wall of furnace body.It is swirl nozzle in the shape of a spiral along furnace
Internal wall is distributed, enable not only each swirl nozzle be partially formed small-sized eddy flow, additionally it is possible to pass through all rotations
The collective effect of flow nozzle forms big spiral helicine air-flow in furnace interior, with this further increase Secondary Air perturbation,
Improve the using effect of the utility model.
Preferably, the blade is made by the metal plate of 2mm thickness.
The utility model compared with prior art, has the following advantages and benefits:
The utility model is used for the Secondary Air penetration power enhancing structure of biomass shaped fuel boiler, each secondary air channel
Outlet end forms eddy flow by swirl nozzle, so that the penetration power and perturbation of Secondary Air are greatly improved, so that peroxide
The flue gas of region and anoxic zones is more fully mixed, so that biomass shaped fuel boiler internal-combustion is more filled
Point.The utility model structure is simple, can greatly compared to the existing mode for directly replacing secondary air fan convenient for setting
Cost is reduced, there is extremely strong economic benefit.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model specific embodiment 1；
Fig. 2 is the partial enlarged view in Fig. 1 at A；
Fig. 3 is the structural schematic diagram of swirl nozzle in the utility model specific embodiment 1；
Fig. 4 is the structural schematic diagram of the utility model specific embodiment 2；
Fig. 5 is the partial enlarged view in Fig. 4 at B；
Fig. 6 is the cross-sectional view that furnace body axis is crossed in the utility model specific embodiment 2.
Label and corresponding parts title in attached drawing:
1- furnace body, 2- secondary air channel, 3- swirl nozzle, 31- installation axle, 32- blade, 4- sleeve.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment 1:
Secondary Air penetration power enhancing structure for biomass shaped fuel boiler as shown in Figure 1 to Figure 3, including furnace body
1, several secondary air channels 2 of 1 inner wall of furnace body are set, and swirl nozzle is arranged towards one end inside furnace body 1 in the secondary air channel 2
3, the swirl nozzle 3 includes installation axle 31, blade 32, and N block blade 32 is circumferentially uniformly fixed in installation axle 31, the peace
Dress axis 31 and secondary air channel 2 is relatively fixed and the axis of installation axle 31 is parallel to the axis of secondary air channel 2, the installation axle 31
Axis and 32 surface of blade where plane intersect, wherein N >=3.32 surface of blade and the angle of 31 axis of installation axle are
α, preferably 30 ° of α in the present embodiment.The swirl nozzle 3 is located inside secondary air channel 2, all blades 32 with secondary air channel 2
Inner wall is fixedly connected.Water flow using 0.1MPa with being tested in this present embodiment, and after water flow passes through swirl nozzle, water flow exists
The rotating in air residence time is obviously prolonged, and is not easy to spread.And when being directly connected to secondary air fan, compressed air, which is removed to have, makes sky
The gas residence time is obviously prolonged and is not easy outside the characteristic spread, additionally it is possible to generate the effect for adsorbing ambient air to center.
Specifically, 2%, CO of boiler internal oxygen amount decline can be from 400mg/m under identical operating condition after installation swirl nozzle3Drop to
200mg/m3Left and right, boiler efficiency improve 1.3%.
Embodiment 2:
Secondary Air penetration power enhancing structure for biomass shaped fuel boiler as shown in Figures 4 to 6, in embodiment
On the basis of 1, the sleeve 4 being connected with secondary air channel 2 is arranged in 1 inner wall of furnace body, and the sleeve 4 is fixedly connected with furnace body 1,
The swirl nozzle 3 is arranged in sleeve 4.All blades 32 in the sleeve 4 are fixedly connected with the inner wall of sleeve 4.Institute
It states sleeve 4 and furnace body 1 welds, sleeve 4 is made by stainless steel material.32 quantity of blade connected in every installation axle 31 is equal
It is four.The swirl nozzle 3 is spirally distributed in 1 inner wall of furnace body.The blade 32 by 2mm thickness metal plate production and
At.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (9)
1. being used for the Secondary Air penetration power enhancing structure of biomass shaped fuel boiler, including furnace body (1), setting are in furnace body (1)
Several secondary air channels (2) of inner wall, which is characterized in that eddy flow is arranged towards the internal one end of furnace body (1) in the secondary air channel (2)
Nozzle (3), the swirl nozzle (3) include installation axle (31), blade (32), and N block blade (32) is circumferentially uniformly fixed on peace
It fills on axis (31), the installation axle (31) and secondary air channel (2) relatively fixed and the axis of installation axle (31) is parallel to Secondary Air
The axis of (2) is managed, the axis of the installation axle (31) intersects with plane where blade (32) surface, wherein N >=3.
2. the Secondary Air penetration power enhancing structure according to claim 1 for biomass shaped fuel boiler, feature
It is, the angle of blade (32) surface and installation axle (31) axis is α, 20 ° of 40 ° of < α <.
3. the Secondary Air penetration power enhancing structure according to claim 1 for biomass shaped fuel boiler, feature
It is, the swirl nozzle (3) is located at secondary air channel (2) inside, and inner wall of all blades (32) with secondary air channel (2) is fixed
Connection.
4. the Secondary Air penetration power enhancing structure according to claim 1 for biomass shaped fuel boiler, feature
It is, the sleeve (4) being connected with secondary air channel (2) is arranged in furnace body (1) inner wall, and the sleeve (4) and furnace body (1) are fixed
Connection, swirl nozzle (3) setting is in sleeve (4).
5. the Secondary Air penetration power enhancing structure according to claim 4 for biomass shaped fuel boiler, feature
It is, all blades (32) in the sleeve (4) are fixedly connected with the inner wall of sleeve (4).
6. the Secondary Air penetration power enhancing structure according to claim 4 for biomass shaped fuel boiler, feature
It is, the sleeve (4) and furnace body (1) are welded, and sleeve (4) is made by stainless steel material.
7. the Secondary Air penetration power enhancing structure according to claim 1 for biomass shaped fuel boiler, feature
It is, blade (32) quantity connected on every installation axle (31) is four.
8. the Secondary Air penetration power enhancing structure according to claim 1 for biomass shaped fuel boiler, feature
It is, the swirl nozzle (3) is spirally distributed in furnace body (1) inner wall.
9. the Secondary Air penetration power enhancing structure according to claim 1 for biomass shaped fuel boiler, feature
It is, the blade (32) is made by the metal plate of 2mm thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820910519.7U CN208332313U (en) | 2018-06-12 | 2018-06-12 | Secondary Air penetration power enhancing structure for biomass shaped fuel boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820910519.7U CN208332313U (en) | 2018-06-12 | 2018-06-12 | Secondary Air penetration power enhancing structure for biomass shaped fuel boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208332313U true CN208332313U (en) | 2019-01-04 |
Family
ID=64770300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820910519.7U Expired - Fee Related CN208332313U (en) | 2018-06-12 | 2018-06-12 | Secondary Air penetration power enhancing structure for biomass shaped fuel boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208332313U (en) |
-
2018
- 2018-06-12 CN CN201820910519.7U patent/CN208332313U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190104 Termination date: 20190612 |