CN206577907U - A kind of airflow uniform distribution applied to wet electrical dust precipitator entrance is combined the unit - Google Patents
A kind of airflow uniform distribution applied to wet electrical dust precipitator entrance is combined the unit Download PDFInfo
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- CN206577907U CN206577907U CN201621495917.4U CN201621495917U CN206577907U CN 206577907 U CN206577907 U CN 206577907U CN 201621495917 U CN201621495917 U CN 201621495917U CN 206577907 U CN206577907 U CN 206577907U
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- reducing
- uniform distribution
- airflow uniform
- guide vane
- combination unit
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Abstract
A kind of airflow uniform distribution applied to wet electrical dust precipitator entrance is combined the unit, and it includes：Deflector, flase floor.It is pyramid type reducing to be exported to wet electric entrance from desulfurizing tower, reducing entrance mounting guiding board regulation air-flow trend, reach and flow effect, flase floor further flows in wet electric porch, is also used as inspection platform, if air-flow is uneven, the percent opening of flase floor can also be changed, the purpose flowed is reached by resistance regulation, it is ensured that wet electric inlet air flow is evenly distributed, bottom maintenance is convenient, it is ensured that the operation of wet electrical dust precipitator stability and high efficiency, the requirement for reaching minimum discharge.
Description
Technical field
The utility model is related to dedusting environment friendly field, more particularly to wet desulphurization+wet electrical dust precipitator smoke gas treatment system
System.
Background technology
Increasingly strict with environmental emission standard, thermal power plant's minimum discharge technology is praised highly energetically, wherein being used as end
Hold smoke gas treatment sharp weapon --- wet electrical dust precipitator technology is used widely.In usual embodiment, honeycomb rotating vane type electricity
Dedusting is arranged on wet desulphurization top of tower, in some engineering projects, and electric cleaner is with two kinds of equipment of desulfurizing tower due to equipment
Caliber size has differences, and can have taper reducing path when being attached, and the air flow method of circulation can be caused uneven, so that shadow
Ring the stable operation of downstream wet electrical dust precipitator.Therefore how to realize effective airflow uniform distribution is to ensure that wet electrical dust precipitator is stable
The key of operation.
Utility model content
The purpose of this utility model is provides a kind of new airflow uniform distribution device at taper reducing, to realize wet type electricity
The stabilization of deduster, Effec-tive Function, reach minimum discharge requirement.Its technical scheme is as follows：
A kind of airflow uniform distribution applied to wet electrical dust precipitator entrance is combined the unit, and mounting arrangements are exported and wet in desulfurizing tower
Between formula electric cleaner entrance at conical reducing, include the guide vane and the honeycomb screen screen on top of bottom, its feature exists
In：Multigroup inclination guide vane regulation reducing interior air-flow is installed and is uniformly distributed in reducing porch；The rectification that reducing exit is installed
Flase floor changes to be moved towards through air-flow of the guide vane after uniform.
Further, guide vane bottom is to the ratio of reducing side wall horizontal range and residing horizontal plane reducing diameter etc.
To reducing side wall horizontal range and the ratio of residing horizontal plane reducing diameter at the top of guide vane, it is ensured that desulfurizing tower outlet
The projected area ratio of water conservancy diversion area and wet electrical dust precipitator entrance is certain.
Further, guide vane bottom is in the diametric(al) of reducing, using spaced set；
Further, guide vane bottom uses smaller spacing, in periphery in the diametric(al) of reducing in central area
Region uses larger spacing；Or it is different according to reducing angle, central area, which also has, using larger spacing or to remove part
Deflector.
Further, the height of deflector downstream direction is about the 20%~30% of reducing height.
Further, deflector is installed by the way of neck, and neck carries certain angle.
Further, honeycomb screen screen can reduce/increase percent opening；The percent opening of honeycomb screen screen is pressed from center to periphery
Sectional area changes.
Further, honeycomb screen screen includes latticed flase floor or orifice plate.
Further, reinforcement girder construction is provided with honeycomb screen screen, honeycomb screen screen can be used as maintenance of equipment platform.
Further, reducing inner section arranges guide vane horizontal and vertical, orthogonal each other.
The utility model can obtain following beneficial effect：
The steady air current that the airflow uniform distribution plate of the grid form of the utility model front end effectively can export desulfurizing tower
It is directed to surrounding, it is to avoid flow velocity and the serious uneven phenomenon of surrounding flow velocity difference, air-flow in the middle of occurring；Also, deflector is carried
Certain angle, it is to avoid dust stratification occurs；End grid plate uniform air-flow again, can be used as inspection platform, save space, protect
Wet electrical dust precipitator stabilization, Effec-tive Function are demonstrate,proved, flue gas is reached minimum discharge.
Brief description of the drawings
Fig. 1 is mounting structure schematic diagram
Fig. 2 is reducing sectional view
Fig. 3 is deflector angle design analysis chart
Fig. 4 is multigroup orthogonal guide plate structural plan
Fig. 5 is another layout drawing of the hardened structure of multigroup orthogonal guide
1 spray system in figure, 2 exhaust pass, 3 take-up devices, 4 landings, 5 flow straightening grids, 6 desulfurization interfaces, 7 gas
Flow even distribution device upper edge contour, 8 airflow uniform distribution devices, 9 taper reducings, 10 desulfurizing towers, 11 electrostatic rotational flow dust-removing demisters
Embodiment
The utility model is further described below in conjunction with the accompanying drawings, it will be appreciated that content described herein is only used for
Description and interpretation the utility model, is not used to limit the utility model.
Exemplified by Fig. 1 be from power plant desulfurizing tower tower diameter φ 13 meters export to 17.5 meters of wet electrical dust precipitator entrance φ
Conical reducing.In order to realize that the air-flow flowed through in conical reducing is uniformly distributed, the design and installation corresponding air flow in reducing
Even distribution device, the multigroup deflector and top flow straightening grid installed including bottom.The wherein angle of inclination design of deflector
It is crucial, blade is oriented to surrounding, different angles guide air-flow to be moved toward different directions, and then change positioned at the wet of downstream
The airflow homogeneity of formula electric cleaner inlet section.Fig. 3 is deflector angle design schematic diagram.A is first water conservancy diversion leaf in figure
Piece bottom and the distance of side wall, A are the diameter that desulfurizing tower is exported, and b extends to wet always for imagination at the top of the first guide vane
During formula electric cleaner entry position and side wall distance, B be wet electrical dust precipitator entrance diameter.Set according to a/A=b/B
Meter calculates the angle of inclination of the first guide vane, the projection of the water conservancy diversion area and wet electrical dust precipitator entrance of such desulfurizing tower outlet
Area ratio is certain, so as to ensure that outlet at bottom tolerance can be imported into upstream entrance section in a balanced way by deflector, makes upstream
The induction air flow ratio of wet electrical dust precipitator Entry Interface is uniform；For multigroup guide vane, using with the first guide vane identical
Calculation, calculates the angle of inclination of corresponding guide vane.As shown in fig. 1, the angle of three groups of guide vanes be respectively 70 degree,
79 degree, 88 degree.
Guide vane can use spaced set in the diametric(al) that desulfurizing tower is exported；In view of in reducing interior air-flow
Flow behavior, wherein intermediate region is different with outer region flow velocity；Middle flow velocity therein is fast, surrounding flow velocity is low, can be with excellent
Selection of land is corresponding to use smaller spacing in central area, and larger spacing is used in outer region.The change of guide vane spacing can be from
Center is divided into 2-3 stepped change distance values to periphery, and different distance values 1m, 1.5m, 2m are taken respectively if point three regions.
The quantity of deflector will be depending on the angle and overall structure according to reducing, and principle is to try to few；
Height of the deflector along airflow direction is about the 20%~30% of reducing height, so as to ensure the guiding of air-flow just
Often；
Deflector is installed by the way of neck, and neck carries certain angle, and this installation method is easy, and can guarantee that
Installation accuracy；
When the height of deflector is more than 700mm, it is proposed that reinforcement prevents malformation on plate.
The honeycomb screen screen that reducing upper end is set enters the air-flow moved after deflector along certain angle of inclination
Air-flow of the one step guiding as upward vertical movement, allows the flow to more uniform and stable enter in wet electrical dust precipitator
Portion.If the situation of local high speed skewness occurs in flase floor bottom, regulation can be passed through by reduction/increase percent opening
Resistance realizes stream ground effect.The percent opening of cowling panel equally also contemplates for air-flow physical plane distribution situation, by from center to
Periphery sectional area change, it is preferably corresponding to use smaller percent opening in central area, used in outer region compared with large opening
Rate.Percent opening is 30%~50%
And flase floor includes latticed flase floor, also including orifice plate.Necessary buttress brace is provided with honeycomb screen screen
Structure, when carrying out upkeep operation, honeycomb screen screen can be used as maintenance platform application.
Overall running environment is acidity, therefore, also to consider anti-corrosion to the set airflow uniform distribution device, using painting glass squama
The mode of piece carries out anti-corrosion.
Fig. 4 is the baffle arrangement figure of another form, i.e., can arrange desulfurizing tower Outlet Section is horizontal and vertical
Deflector, it is orthogonal each other, further improve airflow uniform distribution effect, can according to the egress form of flue gas in Practical Project and
Distribution situation is voluntarily selected.Deflector spacing in middle part therein is small, can be applied to the big operating mode of middle wind speed.
Fig. 5 is the baffle arrangement figure of another form, and deflector spacing in middle part therein is big or removes portion
Split flow plate, can be applied to the small operating mode of middle wind speed, can be according to the egress form and distribution situation of flue gas in Practical Project
Voluntarily select.
The baffle quantity and spacing mentioned inside the utility model are only the suggestion according to this engineering, people in the art
Member is it should be appreciated that be not limited to that.
The utility model proposes the deflector for such a reducing form and the combined airflow distribution scheme of flase floor,
It will be appreciated by those skilled in the art that combination is not limited to that.
Finally it should be noted that：Explanation of the present utility model is the foregoing is only, the utility model is not limited to, to the greatest extent
The utility model is described in detail pipe, for those skilled in the art, and it can still be remembered to foregoing
The technical scheme of load is modified, or carries out equivalent substitution to which part technical characteristic.It is all in spirit of the present utility model
Within principle, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (10)
1. a kind of airflow uniform distribution applied to wet electrical dust precipitator entrance is combined the unit, mounting arrangements are exported and wet type in desulfurizing tower
Between electric cleaner entrance at conical reducing, include the guide vane and the honeycomb screen screen on top of bottom, it is characterised in that：
Multigroup inclination guide vane regulation reducing interior air-flow is installed and is uniformly distributed in reducing porch；The flow straightening grid that reducing exit is installed
Plate changes to be moved towards through air-flow of the guide vane after uniform.
2. airflow uniform distribution combination unit as claimed in claim 1, it is characterised in that：Guide vane bottom is to reducing side wall water
The ratio of flat distance and residing horizontal plane reducing diameter is equal at the top of guide vane to reducing side wall horizontal range and residing water
The ratio of plane reducing diameter, it is ensured that the water conservancy diversion area of desulfurizing tower outlet and the projected area ratio one of wet electrical dust precipitator entrance
It is fixed.
3. airflow uniform distribution combination unit as claimed in claim 1, it is characterised in that：Guide vane bottom is in the diameter side of reducing
Upwards, using spaced set.
4. airflow uniform distribution combination unit as claimed in claim 1, it is characterised in that：Guide vane bottom is in the diameter side of reducing
Upwards, smaller spacing is used in central area, larger spacing is used in outer region；Or according to reducing angle difference, center
Region, which also has, using larger spacing or to remove part deflector.
5. airflow uniform distribution combination unit as claimed in claim 1, it is characterised in that：The height of deflector downstream direction is general
For the 20%~30% of reducing height.
6. airflow uniform distribution combination unit as claimed in claim 1, it is characterised in that：Deflector is installed by the way of neck,
Neck carries certain angle.
7. airflow uniform distribution combination unit as claimed in claim 1, it is characterised in that：Honeycomb screen screen can reduce/increase perforate
Rate；The percent opening of honeycomb screen screen, which is pressed from center to periphery sectional area, to be changed.
8. airflow uniform distribution combination unit as claimed in claim 1, it is characterised in that：Honeycomb screen screen includes latticed flase floor
Or orifice plate.
9. airflow uniform distribution combination unit as claimed in claim 1, it is characterised in that：Buttress brace knot is provided with honeycomb screen screen
Structure, honeycomb screen screen can be used as maintenance of equipment platform.
10. airflow uniform distribution combination unit as claimed in claim 1, it is characterised in that：Reducing inner section is horizontal and vertical
Guide vane is arranged, it is orthogonal each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621495917.4U CN206577907U (en) | 2016-12-29 | 2016-12-29 | A kind of airflow uniform distribution applied to wet electrical dust precipitator entrance is combined the unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621495917.4U CN206577907U (en) | 2016-12-29 | 2016-12-29 | A kind of airflow uniform distribution applied to wet electrical dust precipitator entrance is combined the unit |
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| Publication Number | Publication Date |
|---|---|
| CN206577907U true CN206577907U (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621495917.4U Active CN206577907U (en) | 2016-12-29 | 2016-12-29 | A kind of airflow uniform distribution applied to wet electrical dust precipitator entrance is combined the unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694756A (en) * | 2016-12-29 | 2018-02-16 | 大唐环境产业集团股份有限公司 | A kind of airflow uniform distribution applied to wet electrical dust precipitator entrance combines the unit |
| CN108745646A (en) * | 2018-06-04 | 2018-11-06 | 广东电网有限责任公司 | A kind of electric precipitator and its airflow uniform distribution device |
-
2016
- 2016-12-29 CN CN201621495917.4U patent/CN206577907U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694756A (en) * | 2016-12-29 | 2018-02-16 | 大唐环境产业集团股份有限公司 | A kind of airflow uniform distribution applied to wet electrical dust precipitator entrance combines the unit |
| CN108745646A (en) * | 2018-06-04 | 2018-11-06 | 广东电网有限责任公司 | A kind of electric precipitator and its airflow uniform distribution device |
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