CN204987068U - Grate plenum of even cloth wind - Google Patents
Grate plenum of even cloth wind Download PDFInfo
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- CN204987068U CN204987068U CN201520702214.3U CN201520702214U CN204987068U CN 204987068 U CN204987068 U CN 204987068U CN 201520702214 U CN201520702214 U CN 201520702214U CN 204987068 U CN204987068 U CN 204987068U
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- grate
- distribution plate
- air distribution
- plenum
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Abstract
The utility model discloses a grate plenum of even cloth wind, including air distribution plate (1), shutter (2) and plenum main part (3), the upper portion in plenum main part (3) is installed in air distribution plate (1), both ends around plenum main part (3) are installed in shutter (2). The utility model discloses grate plenum of even cloth wind, even along grate horizontal cloth wind, as to make the fuel that is arranged in grate top air mass flow moderate average, the burning is abundant, burning rate is unanimous, can the fuel economy, it is low to overcome the combustion efficiency that grate air feed inequality arouses.
Description
Technical field
The utility model relates to a kind of grate wind chamber of even distributing wind.
Background technology
The in-service coal-burned industrial boiler sum of China is about 600,000 according to statistics, annual coal consumption accounts for 1/3rd of national raw coal output then, wherein grate firing boiler accounts for 70% of sum, the general only 1%-3% lower than developed country of industrial boilers in China design efficiency, but service efficiency is low by more than 10%, and cause grate firing boiler actual operating efficiency low, it is unreasonable that the main cause that heat loss is large is exactly grate firing boiler air distribution, bad adaptability, the problem of existing grate firing boiler ubiquity cross air dispatching cloth wind inequality, and then increase chemically incomplete combustion and heat loss due to combustibles in refuse, boiler heat loss when off rating runs is then larger, the typical performance of grate firing boiler distribution wind unfair is that fire grate strong wind area easily occurs burner, and then add excess air coefficient, fire box temperature is reduced, in weak plenum area because coal seam resistance is excessive, can be formed one unburned " black-tape ", chemistry and unburned carbon loss are strengthened, therefore, the air distribution cloth wind uniformity of grate firing boiler is run the economical and efficient of boiler and is of great significance.
Utility model content
The purpose of this utility model be to provide a kind of along fire grate horizontal cloth wind evenly, make the air mass flow of the fuel be arranged in above fire grate moderate average, sufficient combustion, burning velocity are consistent, can fuel be saved, overcome the grate wind chamber of the low even distributing wind of the uneven efficiency of combustion caused of fire grate air feed.
The technical scheme that the utility model is adopted for achieving the above object is: a kind of grate wind chamber of even distributing wind, comprise air distribution plate (1), shutter (2) and air compartment main body (3), described air distribution plate (1) is arranged on the top of air compartment main body (3), and described shutter (2) is arranged on the rear and front end of air compartment main body (3).
Described air distribution plate (1) is provided with equally distributed circular hole (4).
Described circular hole (4) adopts positive Rotary-table shape or inverted round stage shape.
The grate wind chamber of a kind of even distributing wind of the utility model, owing to having installed air distribution plate additional at air compartment body top, combustion air is made suitably to become large by resistance during air compartment body top, air compartment body interior defines the space of similar static-pressure chamber, the combustion air dynamic pressure being entered air compartment main body by air door is largely converted into static pressure, and disturbance and the turbulent flow of combustion air reduce greatly, therefore, suitably can strengthen the area of air door, reduce the eddy current produced when combustion air enters air door.Again by adopting the air distribution plate of different open-cellular form three different combustion zones, the region of overheavy firing is needed to adopt perforate to be the air distribution plate of positive Rotary-table, with reduce combustion air enter air distribution plate resistance improve its outlet flow velocity, to make combustion air, there is comparatively high dynamic pressure and pass fire grate segment and coal seam, thus overheavy firing, the region of overheavy firing is not needed to adopt perforate to be the air distribution plate of rounding stage body, air distribution plate resistance is entered to improve combustion air, suitable reduction combustion air is by the flow velocity after air distribution plate, ensureing under the prerequisite of burning completely, reduce the excess air coefficient of boiler, improve the thermal efficiency.
Accompanying drawing explanation
Fig. 1 is the perspective view of the grate wind chamber of a kind of even distributing wind of the utility model.
Fig. 2 is the floor map of the grate wind chamber of a kind of even distributing wind of the utility model.
The air distribution plate schematic diagram of Fig. 3 to be the circular hole of the grate wind chamber of a kind of even distributing wind of the utility model be positive Rotary-table shape.
The air distribution plate schematic diagram of Fig. 4 to be the circular hole of the grate wind chamber of a kind of even distributing wind of the utility model be inverted round stage shape.
In figure: 1, air distribution plate; 2, shutter; 3, air compartment main body; 4, circular hole.
Detailed description of the invention
As shown in Figures 1 to 4, the grate wind chamber of even distributing wind, comprise air distribution plate 1, shutter 2 and air compartment main body 3, air distribution plate 1 is arranged on the top of air compartment main body 3, shutter 2 is arranged on the rear and front end of air compartment main body 3, air distribution plate 1 is provided with equally distributed circular hole 4, circular hole 4 adopts positive Rotary-table shape or inverted round stage shape, the utility model installs the different air distribution plate of open-cellular form on air compartment top additional according to different combustion phases, this air compartment is made up of the some air distribution plates 1 be positioned at below fire grate and air compartment main body 3, before air compartment main body 3, rear side wall panel forms by shutter 2, grate furnace is generally divided into three combustion zones: booster zone, primary zone and burning-out zone, booster zone and burning-out zone due to required air quantity and air hydrodynamic head little, therefore open-cellular form can be adopted to be the air distribution plate of rounding bench-type, the resistance of fire grate is entered with the combustion air suitably improving this region, suitable reduction combustion air passes the dynamic head in fire grate and coal seam, primary zone is the main region that fuel releases energy, therefore more sufficient air is needed, this region can adopt open-cellular form to be the air distribution plate of positive circular platform type, the resistance of fire grate is entered with the combustion air suitably reducing this region, suitable raising combustion air passes the dynamic head in fire grate and coal seam, whole air compartment is owing to having installed air distribution plate additional, be equivalent to the static-pressure chamber that form is certain, therefore air door perforate suitably can be increased, to reduce the eddy flow caused when air door place combustion air introduces air compartment, combustion air is blown into air compartment main body 3 from air channel, left and right by shutter 2 by air blast, in air compartment main body 3, dynamic pressure to a certain degree changes into static pressure, again by air distribution plate 1, the perforate that combustion air is evenly arranged by air distribution plate 1, flow to unified, horizontal cloth wind is tending towards even.
The grate wind chamber of the utility model even distributing wind, owing to having installed air distribution plate additional at air compartment body top, combustion air is made suitably to become large by resistance during air compartment body top, air compartment body interior defines the space of similar static-pressure chamber, the combustion air dynamic pressure being entered air compartment main body by air door is largely converted into static pressure, disturbance and the turbulent flow of combustion air reduce greatly, therefore, suitably can strengthen the area of air door, reduce the eddy current produced when combustion air enters air door, again by adopting the air distribution plate of different open-cellular form three different combustion zones, the region of overheavy firing is needed to adopt perforate to be the air distribution plate of positive Rotary-table, with reduce combustion air enter air distribution plate resistance improve its outlet flow velocity, to make combustion air, there is comparatively high dynamic pressure and pass fire grate segment and coal seam, thus overheavy firing, the region of overheavy firing is not needed to adopt perforate to be the air distribution plate of rounding stage body, air distribution plate resistance is entered to improve combustion air, suitable reduction combustion air is by the flow velocity after air distribution plate, ensureing under the prerequisite of burning completely, reduce the excess air coefficient of boiler, improve the thermal efficiency.
Claims (3)
1. the grate wind chamber of an even distributing wind, it is characterized in that: comprise air distribution plate (1), shutter (2) and air compartment main body (3), described air distribution plate (1) is arranged on the top of air compartment main body (3), and described shutter (2) is arranged on the rear and front end of air compartment main body (3).
2. the grate wind chamber of a kind of even distributing wind according to claim 1, is characterized in that: described air distribution plate (1) is provided with equally distributed circular hole (4).
3. the grate wind chamber of a kind of even distributing wind according to claim 2, is characterized in that: described circular hole (4) adopts positive Rotary-table shape or inverted round stage shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520702214.3U CN204987068U (en) | 2015-09-11 | 2015-09-11 | Grate plenum of even cloth wind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520702214.3U CN204987068U (en) | 2015-09-11 | 2015-09-11 | Grate plenum of even cloth wind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204987068U true CN204987068U (en) | 2016-01-20 |
Family
ID=55121435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520702214.3U Active CN204987068U (en) | 2015-09-11 | 2015-09-11 | Grate plenum of even cloth wind |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204987068U (en) |
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2015
- 2015-09-11 CN CN201520702214.3U patent/CN204987068U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191202 Address after: 116031 No.20, Xinhe street, Xigang District, Dalian City, Liaoning Province Patentee after: Dalian Boiler and Pressure Vessel Inspection Research Institute Co., Ltd. Address before: 116013 No. 20, New River street, Xigang District, Liaoning, Dalian Patentee before: Dalian Boiler Pressure Vessel Testing Research Institute |
|
| TR01 | Transfer of patent right |