CN217093911U - Closed-channel type electric dust collector - Google Patents
Closed-channel type electric dust collector Download PDFInfo
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- CN217093911U CN217093911U CN202220180842.XU CN202220180842U CN217093911U CN 217093911 U CN217093911 U CN 217093911U CN 202220180842 U CN202220180842 U CN 202220180842U CN 217093911 U CN217093911 U CN 217093911U
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Abstract
The utility model provides a close channel type electric dust remover, including at least one dust removal box, be provided with multistage electric field unit along flue gas flow direction in the dust removal box, be equipped with a plurality of rows of anode plate groups in each electric field unit, form the electric field passageway between two adjacent rows of anode plate groups, and the electric field passageway export of last one-level electric field unit is linked together with the electric field passageway entry of next one-level electric field unit, be equipped with the negative pole group in the electric field passageway, each electric field passageway is equipped with passageway closure mechanism towards the one end of flue gas entry, passageway closure mechanism is including setting up in the shutoff subassembly of each electric field passageway entry to and be used for controlling the shutoff subassembly closed or open the actuating mechanism of electric field passageway entry. The closed channel type electric dust collector can reduce secondary dust raising generated by vibration, reduce the concentration of dust at an outlet and improve the dust removal efficiency.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a technical field that the flue gas pollutant was administered, especially a close channel formula electric dust remover.
[ background of the invention ]
The secondary dust raising is a main technical bottleneck that an electric dust collector breaks through the existing dust removal efficiency, and due to the scouring effect of flue gas flow, dust is easily brought up by the air flow again in the falling process to enter the air flow through vibration and ash removal in the air flow, so that the dust removal efficiency is reduced. In order to solve the problems, the prior industrial application technology mainly adopts movable electrode type electric dust removal and wet type electric dust removal, but has the defects of poor operation stability and high cost respectively.
At present, under the global targets of 'carbon peak reaching and carbon neutralization', clean energy begins to develop in a large scale, a coal-fired unit gradually changes from a leading position to a direction of regulating and controlling a power supply in the energy industry, the coal-fired unit becomes a mainstream means of national power grid peak regulation in the future, and the trend of realizing 'quick response and deep regulation' in the absence of power is inevitable. Under low load and ultra-low load, the problems of serious dust deposition and high output energy consumption of the electric dust collector under unit generated energy exist due to the reduction of the smoke volume of the electric dust collector, and the development of a novel electric dust collector under the working conditions of 'peak regulation quick response' and 'ultra-low load operation' is urgently needed.
Every passageway of conventional electric precipitation communicates the flue gas all the time, and when the positive plate deashing, the ash is brought the flue gas into by the air current again in the in-process that falls, has following problem:
1. the secondary dust raising is obvious, and the secondary vibration is not solved by economic and efficient technologyThe dust is not stably less than 10mg/m 3 Ultra low outlet dust concentration.
2. Under low load, the flow rate is low, the problem of serious dust deposition exists, and the energy consumption rate is high.
[ Utility model ] content
The utility model aims at solving the problem in the prior art, providing a close channel formula electric dust remover, can reduce the secondary raise dust that shakes and beat and produce, reduce export dust concentration, improve dust collection efficiency.
In order to realize the above object, the utility model provides a close channel type electric dust remover, including at least one dust removal box, be provided with multistage electric field unit along flue gas flow direction in the dust removal box, be equipped with a plurality of rows of anode plate group in each electric field unit, form the electric field passageway between two adjacent rows of anode plate groups, and the electric field passageway export of last one-level electric field unit is linked together with the electric field passageway entry of next one-level electric field unit, be equipped with the negative pole group in the electric field passageway, each electric field passageway is equipped with passageway closing mechanism towards the one end of flue gas entry, passageway closing mechanism is including setting up in the shutoff subassembly of each electric field passageway entry to and be used for controlling the shutoff subassembly closed or open the actuating mechanism of electric field passageway entry.
Preferably, the plugging assembly is arranged at the inlet end of the electric field channel in a reversible mode and overturns under the action of the driving mechanism, so that the inlet of the electric field channel is closed or opened.
Preferably, the drive mechanism is a pneumatic steering device.
Preferably, the plugging assembly comprises a channel baffle and a transmission shaft, the transmission shaft is installed in the dust removal box body through a plurality of supporting bearings, and one end of the transmission shaft is in transmission connection with the driving mechanism.
Preferably, the transmission shaft is arranged in the middle of the channel baffle, and the axis of the transmission shaft is perpendicular to the horizontal plane.
Preferably, the width of the channel barrier is not smaller than the width of the electric field channel.
Preferably, the anode plate groups in the same row in different levels of the electric field units are connected, the dust removal box body is further provided with anode rapping devices correspondingly arranged with the anode plate groups in the same row, and under one rapping action of the anode rapping devices, the anode plates in the anode plate groups in the same row are simultaneously rapped to remove dust.
Preferably, an inlet end socket is arranged at an inlet of each dust removal box body, an outlet end socket is arranged at an outlet of each dust removal box body, and an ash bucket is arranged at the bottom of each stage of electric field unit of each dust removal box body.
The utility model has the advantages that:
1. the problem of vibrating and raising dust for the second time is solved, the dust removal efficiency is greatly improved, and the dust concentration at the outlet of the electric dust removal is reduced.
2. The mechanical structure is simple, the stability is good, and the failure rate is extremely low.
3. The method is particularly suitable for low-load working conditions (peak shaving working conditions of coal-fired power plants), and the flow speed is improved by closing partial electric field channels. For example, the designed flue gas flow rate of 0.8m/s is only 0.5m/s under 30% working conditions, the flow rate is too low, the problems of backflow and ash blockage exist, and the flow rate can be improved by closing a channel to solve the problems. Under the ultra-low load (19% -30% working condition), the peak regulation response speed is high, and the energy consumption is reduced by closing the channel and reducing the power output.
4. The driving mechanism can adopt an air pressure pipeline, the space adaptability is good, the performance is stable, the occupied space is small, and the internal space utilization rate of the electric dust collector is improved.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic view of the structure of a closed channel type electric precipitator of the present invention;
FIG. 2 is a schematic top view of a part of the structure of the passage-closing type electric precipitator of the present invention;
fig. 3 is a schematic view of the operation principle of the passage-closing type electric dust collector of the present invention.
[ detailed description ] embodiments
Referring to fig. 1 to 3, the utility model relates to a close channel type electric dust remover, including at least one dust removal box 10, be provided with multistage electric field unit along flue gas flow direction in the dust removal box 10, be equipped with a plurality of rows of anode plate group 1 in each electric field unit, form electric field passageway 2 between two adjacent rows of anode plate group 1, and the electric field passageway 2 export of last one-level electric field unit is linked together with the electric field passageway 2 entry of next one-level electric field unit, be equipped with negative pole group 4 in the electric field passageway 2, each electric field passageway 2 is equipped with passageway closing mechanism 3 towards the one end of flue gas entry, passageway closing mechanism 3 is including setting up in the shutoff subassembly 31 of each electric field passageway 2 entry to and be used for controlling that shutoff subassembly 31 is closed or open the actuating mechanism 32 of electric field passageway 2 entry.
Further, the plugging assembly 31 is reversibly installed at the inlet end of the electric field channel 2, and is turned over by the driving mechanism 32 to close or open the inlet end of the electric field channel 2.
Further, the driving mechanism 32 employs a pneumatic steering device.
Further, the blocking assembly 31 comprises a passage baffle 311 and a transmission shaft 312, the transmission shaft 312 is installed in the dust removing box 10 through a plurality of supporting bearings 3121, and one end of the transmission shaft 312 is in transmission connection with the driving mechanism 32. In this embodiment, the width of the passage baffle 311 is not less than the width of the electric field passage 2, a transmission shaft 312 is disposed in the middle of the passage baffle 311, the axis of the transmission shaft 312 is perpendicular to the horizontal plane, and support bearings 3121 are disposed at both ends of the transmission shaft 312 and connected to the pneumatic steering device, or a support bearing 3121 is disposed at one end of the transmission shaft 312, the pneumatic steering device is disposed at the other end, and a dust bearing is employed as the support bearing 3121. The transmission shaft 312 is driven by the pneumatic steering device to rotate, so as to drive the passage baffle 311 to open and close.
Further, every row of anode plate group 1's upper end is spacing to be hung, is connected between the same row of anode plate group 1 that is in different levels of electric field unit, still be equipped with on the dust removal box 10 with the corresponding anode rapping device who arranges of each same row of anode plate group 1, under one rapping action of anode rapping device, each anode plate 11 on the same row of anode plate group 1 raps the deashing simultaneously.
Further, an inlet end enclosure 101 is arranged at an inlet of each dust removing box body 10, an outlet end enclosure 102 is arranged at an outlet of each dust removing box body 10, and an ash bucket 103 is arranged at the bottom of each stage of electric field unit of each dust removing box body 10.
The utility model discloses the theory of operation: referring to fig. 3, a channel baffle 311 is arranged at the front end of each electric field channel 2 of each electric field unit, the anode plate groups 1 are rapped row by row for ash removal, and the anode plates 11 of each anode plate group 1 are rapped simultaneously for ash removal in one rapping action. Before a certain row of anode plate groups 1 is rapped, the channel baffles 311 of the corresponding electric field channels 2 at the left side and the right side of the row of anode plate groups 1 are closed, so that the air flows of the two electric field channels 2 can be isolated or greatly reduced, no air flow or extremely low flow speed is realized during rapping, the dust in the falling can not be taken by the air flow again, and the problem of secondary dust raising during rapping is solved.
The action flow is as follows:
a. a flue gas electric field channel 2 is formed between every two adjacent rows of anode plate groups 1, each cathode wire of the cathode plate group 4 in the electric field channel 2 is provided with negative high voltage, each anode plate 11 of the anode plate group 1 is grounded, flue gas enters from the inlet end socket 101, dust is separated from the flue gas and adsorbed onto the anode plate 11 under the action of electric field force when passing through the electric field channel 2, and the flue gas is discharged from the outlet end socket 102 after dust removal.
b. When the anode rapping device raps to remove ash, the ash is removed row by row in sequence, when a row of anode plate groups 1 is appointed to remove ash, the electric field channels 2 corresponding to the two sides of the anode plate group 1 are closed, and the rapped dust falls into the ash bucket 103.
When the coal-fired unit operates at low load and peak load, the coal-fired unit is in an ultra-low load (19% -30% working condition), and the output of a power supply can be closed or reduced by turning off a power supply subarea (an area corresponding to an electric field unit, as shown in figure 2) according to the smoke volume, so that the effect of saving energy consumption is achieved. Wherein, the turning off of a 'power supply subarea' is a technical measure matched with a turning off channel and is used together. The problem that the flow velocity is too low and secondary raise dust can be effectively solved to the turn-off passageway, and the purpose of energy-conservation can effectively be reached to the power supply subregion of turn-off. When the power supply subareas are mutually matched, channels are not turned off or the number of the turned-off channels is reduced in the area where the power supply subareas are normally turned off, so that the purpose of optimal dust removal and energy-saving comprehensive performance is achieved.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (8)
1. A closed channel type electric dust collector is characterized in that: including at least one dust removal box (10), be provided with multistage electric field unit along flue gas flow direction in the dust removal box (10), be equipped with a plurality of rows of anode plate group (1) in each electric field unit, form electric field passageway (2) between two adjacent rows of anode plate group (1), and electric field passageway (2) export of last one-level electric field unit is linked together with electric field passageway (2) entry of next stage electric field unit, be equipped with negative pole group (4) in electric field passageway (2), each electric field passageway (2) is equipped with passageway closure mechanism (3) towards the one end of flue gas entry, passageway closure mechanism (3) are including setting up in shutoff subassembly (31) of each electric field passageway (2) entry to and be used for controlling shutoff subassembly (31) and close or open actuating mechanism (32) of electric field passageway (2) entry.
2. A closed channel electro precipitator according to claim 1, wherein: the plugging assembly (31) is arranged at the inlet end of the electric field channel (2) in a turnover mode and is turned over under the action of the driving mechanism (32), so that the inlet of the electric field channel (2) is closed or opened.
3. A closed channel electric precipitator according to claim 1 or 2, wherein: the driving mechanism (32) adopts a pneumatic steering device.
4. A closed channel electric precipitator according to claim 1 or 2, wherein: the blocking assembly (31) comprises a channel baffle (311) and a transmission shaft (312), the transmission shaft (312) is installed in the dust removal box body (10) through a plurality of supporting bearings (3121), and one end of the transmission shaft (312) is in transmission connection with the driving mechanism (32).
5. The closed-channel electric precipitator of claim 4, wherein: the transmission shaft (312) is arranged in the middle of the channel baffle (311), and the axis of the transmission shaft is vertical to the horizontal plane.
6. The closed-channel electric precipitator of claim 4, wherein: the width of the channel baffle (311) is not less than the width of the electric field channel (2).
7. A closed channel electro precipitator according to claim 1, wherein: be connected between the same row of anode plate group (1) that is in different levels of electric field unit, still be equipped with on dust removal box (10) with the corresponding positive pole rapping device who arranges of each same row of anode plate group (1), under one rapping action of positive pole rapping device, each anode plate (11) on the same row of anode plate group (1) raps the deashing simultaneously.
8. A closed channel electro precipitator according to claim 1, wherein: an inlet end socket (101) is arranged at the inlet of each dust removing box body (10), an outlet end socket (102) is arranged at the outlet of each dust removing box body, and an ash bucket (103) is arranged at the bottom of each stage of electric field unit of each dust removing box body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220180842.XU CN217093911U (en) | 2022-01-24 | 2022-01-24 | Closed-channel type electric dust collector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220180842.XU CN217093911U (en) | 2022-01-24 | 2022-01-24 | Closed-channel type electric dust collector |
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| CN217093911U true CN217093911U (en) | 2022-08-02 |
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| CN202220180842.XU Active CN217093911U (en) | 2022-01-24 | 2022-01-24 | Closed-channel type electric dust collector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433359A (en) * | 2022-01-24 | 2022-05-06 | 浙江菲达环保科技股份有限公司 | Closed-channel type electric dust collector |
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- 2022-01-24 CN CN202220180842.XU patent/CN217093911U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433359A (en) * | 2022-01-24 | 2022-05-06 | 浙江菲达环保科技股份有限公司 | Closed-channel type electric dust collector |
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