CN111921711A - Control method of low-wind-resistance anti-return-wind wet electrostatic dust collector - Google Patents
Control method of low-wind-resistance anti-return-wind wet electrostatic dust collector Download PDFInfo
- Publication number
- CN111921711A CN111921711A CN202010937973.3A CN202010937973A CN111921711A CN 111921711 A CN111921711 A CN 111921711A CN 202010937973 A CN202010937973 A CN 202010937973A CN 111921711 A CN111921711 A CN 111921711A
- Authority
- CN
- China
- Prior art keywords
- air flow
- air
- discharge
- elastic
- flushing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/16—Plant or installations having external electricity supply wet type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/78—Cleaning the electrodes by washing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Electrostatic Separation (AREA)
Abstract
The invention relates to a control method of a low-wind-resistance anti-return-air wet electrostatic precipitator, which comprises an electrostatic precipitator body, wherein a bidirectional booster pump is arranged at the upper part of the electrostatic precipitator body; the electrostatic dust collector body is provided with an electrostatic system and a flushing system; the electrostatic system comprises an anode dust collecting plate and a discharge cathode, wherein the discharge cathode comprises a discharge electrode arc end and a discharge electrode tip; the anode dust collecting plate is in a wide plate-shaped structure; the anode dust collecting plate is provided with a groove corresponding to the shape of the discharge cathode, and the discharge cathode extends into the groove but is not contacted with the groove; the flushing system comprises a bidirectional booster pump and an elastic flushing pipeline; the elastic flushing pipeline is in a spiral tightening state when cleaning is not carried out, in the cleaning process, the bidirectional booster pump is started to positively turn the elastic flushing pipeline to inject high-pressure water, and the elastic flushing pipeline extends to the bottom in the electrostatic dust collector body and extends to the position between the electrodes.
Description
Technical Field
The invention relates to a control method of an air purification device, in particular to a control method of wet electrostatic dust collection equipment with a low wind resistance air return prevention function, and belongs to the field of electrostatic dust collection.
Background
An electrostatic dust removal purification system is an air purification system commonly used in industry and life, scientists have successfully tested the phenomena of discharge and electric wind in a large amount of smoke gas two hundred years ago, the purification and filtration effects of electrostatic force on dust-containing gas are verified one hundred years ago, the process of the treatment is applied to industry, and nowadays, the electrostatic dust removal technology is widely applied to almost all industrial fields, the principle of electrostatic dust removal is that air flow containing pollutant particles is introduced from an air inlet, gas molecules in the air are ionized by a high-voltage direct-current electric field to generate a large amount of electrons and ions, the electrons and the ions move towards two poles under the action of electric field force, the dust particles and bacteria in the air flow are touched to charge the charged particles in the moving process, the charged particles move towards a polar plate with opposite charges under the action of the electric field force, the effect of collecting dust particles in the airflow is achieved, and the purified airflow is flushed out of the air outlet and discharged, so that the purification of the gas containing pollutant particles is completed.
In the actual use process, the reverse flow airflow is generated due to the change of the air pressure inside and outside the electrostatic dust collector and the operation (such as rapping or blowing flushing) of the equipment inside the electrostatic dust collector, that is, the air flow flows from the air outlet to the air inlet to generate return air, which can cause serious reverse leakage of pollutants, the prior art solves the problem that a check valve is often arranged at the air outlet or the air inlet, while closing the air inlet valve during operation (e.g. rapping or blow-flushing) of the internal equipment of the electrostatic precipitator allows the electrostatic precipitation system to be temporarily taken off-line, and switches to another electrostatic precipitator connected in parallel to work, and the designs in the prior art increase the number of the electrostatic precipitator and corresponding parts and increase the cost, meanwhile, the check valve is adopted, so that the flow loss of the airflow is improved, and the working efficiency of the electrostatic dust collector is reduced.
Meanwhile, in the prior art, a spray washing device of the wet electrostatic precipitator is generally arranged at the top in the wet electrostatic precipitator, and when the wet electrostatic precipitator needs to be washed, cleaning liquid or water is sprayed out to wash the electrode; at present, a cleaning water pipe is arranged between electrodes of a wet electrostatic precipitator so as to clean the whole electrodes, but when the cleaning water pipe is arranged without cleaning operation, the cleaning water pipe still remains between the electrodes to block the movement of air flow between the electrodes, and the working efficiency of the electrostatic precipitator is reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the control method of the low-wind-resistance return-air-prevention wet electrostatic precipitator comprises an electrostatic precipitator body, wherein a bidirectional booster pump is arranged at the upper part of the electrostatic precipitator body; the electrostatic dust collector body is provided with an electrostatic system and a flushing system; the electrostatic system comprises an anode dust collecting plate and a discharge cathode; the flushing system comprises a bidirectional booster pump and an elastic flushing pipeline; the elastic flushing pipeline is in a spiral tightening state when not being cleaned, after the electrostatic system in the electrostatic dust collector body works for a period of time, a great amount of pollutant particles are deposited on the anode dust collecting plate and the discharge cathode, the power supply of a part needing to be cleaned in the electrostatic system is closed, and a cleaning process is started; specifically, the bidirectional booster pump is started to rotate forward to inject high-pressure water into the elastic flushing pipeline, the elastic flushing pipeline is not in a spiral tightening state under the action of water pressure, and extends towards the bottom in the electrostatic dust collector body and extends into the space between the electrodes.
Furthermore, the elastic flushing pipeline is uniformly provided with flushing nozzles; the elastic flushing pipeline is provided with a water outlet opening at a position corresponding to the flushing nozzle, the flushing nozzle comprises an upper jaw, a lower jaw and an elastic seat, and the upper jaw and the lower jaw are movably arranged on the elastic flushing pipeline through the corresponding elastic seats; and when the elastic flushing pipeline is completely unfolded, high-pressure water in the elastic flushing pipeline impacts the upper jaw and the lower jaw of the flushing nozzle through the water outlet opening corresponding to the flushing nozzle and enables the flushing nozzle to be opened, then the flushing nozzle sprays high-pressure flushing water flow to impact and clean pollutant particles deposited on the anode dust collecting plate and the discharge cathode, and the pollutant particles are cleaned under the impact of the water flow.
Further, after the water spraying and cleaning of the anode dust collecting plate and the discharge cathode are finished, the bidirectional booster pump is controlled to rotate reversely to suck out residual water in the elastic flushing pipeline, at the moment, the upper jaw and the lower jaw are restored to a closed state under the action of the elastic seat due to the disappearance of water pressure, meanwhile, the elastic flushing pipeline is assisted to retract to a spirally tightened state due to the suck-back action of the bidirectional booster pump, then the bidirectional booster pump is closed, and at the moment, the elastic flushing pipeline is changed to the spirally tightened state.
Further, an air inlet is formed in one side of the electrostatic dust collector body, and an air outlet is formed in the other side of the electrostatic dust collector body; the anode dust collecting plate and the discharge cathode are arranged at intervals in parallel to the flowing direction of the airflow; the discharge cathode is a narrow plate-shaped electrode with a water drop-shaped cross section and comprises a discharge electrode arc end and a discharge electrode tip, the discharge electrode arc end faces the air inlet, and the discharge electrode tip faces the air outlet; the anode dust collecting plate is of a wide plate-shaped structure; the anode dust collecting plate is provided with a groove corresponding to the discharge cathode in shape, and the discharge cathode extends into the groove but is not in contact with the groove.
Further, a main air flow channel is formed between two adjacent anode dust collecting plates, and a plurality of discharge cathodes are arranged in the air flow direction in the main air flow channel; and the secondary airflow channel is formed between the arc end of the discharge electrode and the groove as well as between the side edge of the discharge cathode and the groove.
Further, after the airflow enters from the air inlet, the arc end of the discharge electrode of the discharge cathode divides the airflow into two parts, one part flows in the main airflow channel, and the other part flows in the auxiliary airflow channel; because the arc end of the discharge electrode faces the air inlet, the tip of the discharge electrode faces the air outlet, and the shape of the groove corresponds to that of the discharge cathode, at the moment, the flowing direction of the air flow in the main air flow channel is the same as that of the air flow in the auxiliary air flow channel, and the air flow flows towards the air outlet, the anode dust collecting plate and the discharge cathode structure cannot obstruct the air flow when the air flow flows from the air inlet to the air outlet.
Further, when air flow and/or water mist flow generated by high-pressure cleaning water during air return and/or cleaning flows between the polar plates towards the air inlet, the discharge electrode tip of the discharge cathode can also divide the air flow and/or the water mist flow into two parts, wherein one part flows in the main air flow channel, and the other part flows in the auxiliary air flow channel; because the tips of the discharge electrodes face the air outlet, the arc ends of the discharge electrodes face the air inlet, and the grooves and the discharge cathodes are in corresponding shapes, at this time, under the guidance of the arc ends of the discharge electrodes and the arc sections of the corresponding grooves, the flow direction of the air flow and/or the water mist flow in the secondary air flow channel is opposite to the flow direction of the air flow and/or the water mist flow in the main air flow channel, so the air flow and/or the water mist flow in the secondary air flow channel can obstruct the flow of the air flow and/or the water mist flow in the main air flow channel, and the return air flow and/or the water mist flow can be substantially reduced to zero after passing through the discharge cathodes and the grooves.
Has the advantages that: by adopting the unique structural design of the anode dust collecting plate and the discharge cathode and reasonable control, under the condition of not installing a check valve, the airflow in the electrostatic dust collector can only flow from the air inlet to the air outlet, so that the problem of serious reverse leakage of pollutants caused by reverse filling airflow is solved, the number of the electrostatic dust collector and corresponding parts is reduced, the environmental protection cost is effectively reduced, the flow loss of the airflow during normal passing through the electrostatic dust collector is reduced, and the working efficiency of the electrostatic dust collector is improved; and meanwhile, by adopting the water spraying pipeline which can be contracted and extended and reasonable control, the cleaning of the whole anode dust collecting plate and the discharge cathode structure between the electrodes can be realized when the cleaning is carried out, and the water spraying pipeline is separated from the top part between the electrodes and is contracted into the wet electrostatic dust collector when the cleaning is not carried out, so that the air flow passing property is enhanced, and the working efficiency of the electrostatic dust collector is also improved.
Drawings
FIG. 1 is a schematic structural view of an anti-return-air electrostatic precipitator;
FIG. 2 is a schematic view of an electrode arrangement structure of the air return prevention electrostatic precipitator;
FIG. 3 is a schematic view of gas flow between electrodes;
FIG. 4 is a front view of a discharge cathode structure;
FIG. 5 is a schematic structural diagram of the anti-return air electrostatic precipitator with a cleaning device in a state of not being cleaned;
FIG. 6 is a schematic structural diagram of the return air prevention electrostatic precipitator with a cleaning device in a cleaning state;
FIG. 7 is a schematic view of the structure and operation of the flushing nozzle;
figure 8 is an alternative configuration of the flexible flush tube.
Description of reference numerals:
1. an electrostatic precipitator body; 11. an air inlet; 12. an air outlet; 13. an ash hopper; 14. a support; 15. a high pressure tank; 16. a bidirectional booster pump;
2. an electrostatic system; 21. a high-voltage porcelain insulator; 22. an electrode holder; 23. an anode dust collecting plate; 231. a groove; 24. a discharge cathode; 241. arc ends of discharge electrodes; 242. a discharge electrode tip; 25. a main gas flow path; 26. a secondary airflow channel;
3. a rapping system;
4. elastically flushing the pipeline; 41. flushing the nozzle; 411. the upper jaw; 412. a lower jaw; 413. an elastic seat.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following specific examples.
Example one
Referring to the attached figure 1, the anti-return-air electrostatic precipitator is provided with an electrostatic precipitator body 1, wherein the electrostatic precipitator body 1 is a horizontal precipitator, the electrostatic precipitator body 1 is installed on a horizontal plane through a support 14, one side of the electrostatic precipitator body 1 is provided with an air inlet 11, the other side of the electrostatic precipitator body 1 is provided with an air outlet 12, the lower part of the electrostatic precipitator body 1 is provided with an ash bucket 13, and the upper part of the electrostatic precipitator body 1 is provided with a high-pressure tank 15; an electrostatic system 2 and a rapping system 3 are arranged in the electrostatic dust collector body 1, the rapping system 3 is electromagnetic or mechanical rapping and is used for rapping pollutant particles collected in the electrostatic system 2, and an ash hopper 13 is used for collecting dust which is rapped.
Referring to fig. 1 to 4, the electrostatic system 2 includes a high voltage porcelain bottle 21, an electrode holder 22, an anode dust collecting plate 23, and a discharge cathode 24; the high-voltage porcelain bottle 21 is arranged in the high-voltage box 15 and provides high voltage electricity for the anode dust collecting plate 23 and the discharge cathode 24; the anode dust collecting plate 23 and the discharge cathode 24 are arranged in the electrostatic precipitator body 1 and suspended in the shell of the electrostatic precipitator body 1 through the electrode frame 22; the anode dust collecting plate 23 and the discharge cathode 24 are arranged at intervals in parallel to the flow direction of the air stream; the discharge cathode 24 is a narrow plate-shaped electrode with a water drop-shaped cross section, and comprises a discharge electrode arc end 241 and a discharge electrode tip 242, the discharge electrode arc end 241 faces the air inlet 11, the discharge electrode tip 242 faces the air outlet 12, and the discharge electrode tip 242 is in a sawtooth structure in the length direction of the discharge cathode 24 and is used for generating discharge corona and charging pollutant particles in air flow; the anode dust collecting plates 23 are in a wide plate-shaped structure, a main air flow channel 25 is formed between two adjacent anode dust collecting plates 23, and a plurality of discharge cathodes 24 are arranged in the air flow direction in the main air flow channel 25; the anode dust collecting plate 23 is provided with a groove 231 corresponding to the shape of the discharge cathode 24, the discharge cathode 24 extends into the groove 231 but does not contact the groove 231, and a secondary air flow path 26 is formed between the arc end 241 of the discharge electrode and the groove 231 and between the side edge of the discharge cathode 24 and the groove 231.
Referring to fig. 1-4, when the electrostatic precipitator body 1 is in operation, the air flow carries contaminant particles into the electrostatic precipitator body 1 from the air inlet 11, and when passing through the electrostatic system 2, the contaminant particles are charged after corona discharge through the discharge electrode tip 242 of the discharge cathode 24, and then move and adsorb to the anode dust collecting plate 23 under the action of the electric field force between the anode dust collecting plate 23 and the discharge cathode 24, and after the contaminant particles are deposited for a period of time, for example, when the secondary air flow channel 26 is about to be blocked, the rapping system 3 is started to rap the contaminants deposited on the anode dust collecting plate 23 and the discharge cathode 24 and collect them in the ash bucket 13.
The structure of the anode dust collecting plate 23 and the discharge cathode 24 is adopted, after the air flow enters from the air inlet 11, the air flow is divided into two parts at the arc end 241 of the discharge electrode of the discharge cathode 24, one part flows in the main air flow channel 25 formed between the anode dust collecting plates 23, and the other part flows in the auxiliary air flow channel 26 formed between the discharge cathode 24 and the groove 231; since the arc end 241 of the discharge electrode faces the air inlet 11, the tip 242 of the discharge electrode faces the air outlet 12, and the shape of the groove 231 corresponds to that of the discharge cathode 24, the air flow in the main air flow channel 25 and the air flow in the secondary air flow channel 26 are in the same direction and both flow toward the air outlet 12, and therefore, the anode dust collecting plate 23 and the discharge cathode 24 do not obstruct the air flow when the air flow flows from the air inlet 11 to the air outlet 12.
When the return air phenomenon occurs, the air flow will flow from the air outlet 12 to the air inlet 11, the discharge electrode tip 242 of the discharge cathode 24 will also divide the air flow into two parts, one part will flow in the main air flow channel 25 formed between the anode dust collecting plates 23, and the other part will flow in the secondary air flow channel 26 formed between the discharge cathode 24 and the groove 231; because the tip 242 of the discharge electrode faces the air outlet 12, the arc end 241 of the discharge electrode faces the air inlet 11, and the shape of the groove 231 corresponds to that of the discharge cathode 24, at this time, under the guidance of the arc end 241 of the discharge electrode and the arc segment of the groove 231 corresponding to the arc end 241 of the discharge electrode, the direction of the airflow in the secondary airflow channel 26 is opposite to that of the airflow in the primary airflow channel 25, so the airflow in the secondary airflow channel 26 can obstruct the airflow in the primary airflow channel 25, and the return airflow can be substantially reduced to zero after passing through the discharge cathodes 24 and the grooves 231, thereby realizing the control of the return airflow. The structural function is particularly suitable for the working process of the rapping system 3, at the moment, if the return air formed by rapping can cause the problem of serious reverse leakage of pollutants, the prior method is to seal the air inlet 11 for rapping, but the design does not need to seal the air inlet 11, so that rapping can be carried out at any working time of the electrostatic dust collector body 1, the problem that a single electrostatic dust collector cannot continuously work all the time is effectively solved, and the working efficiency of the electrostatic dust collector is improved.
Example two
Referring to fig. 5-7, a low windage return air prevention wet electrostatic precipitator, on the basis of the first embodiment, removes the rapping system 3, meanwhile, a bidirectional booster pump 16 is arranged on the upper part of the electrostatic precipitator body 1, one end of the bidirectional booster pump 16 is connected with an external cleaning liquid supply system, the other end of the bidirectional booster pump passes through the upper shell of the electrostatic precipitator body 1 and is connected with an elastic flushing pipeline 4 arranged on the upper part in the electrostatic precipitator body 1, flushing nozzles 41 are uniformly arranged on the elastic flushing pipeline 4, a water outlet opening is arranged on the position of the elastic flushing pipeline 4 corresponding to the flushing nozzle 41, the flushing nozzle 41 comprises an upper jaw 411, a lower jaw 412 and an elastic seat 413, the upper jaw 411 and the lower jaw 412 are movably arranged on the elastic flushing pipeline 4 through the respective corresponding elastic seat 413, the upper jaw 411 and the lower jaw 412 are in a closed state under the action of the elastic seat 413 when water is not sprayed.
The elastic flushing pipeline 4 is in a spiral tightening state when not performing cleaning work, after the electrostatic system 2 in the electrostatic precipitator body 1 works for a period of time, a large amount of pollutant particles are deposited on the anode dust collecting plate 23 and the discharge cathode 24, for example, when the auxiliary air flow channel 26 is about to be blocked, the power supply of the part needing to be cleaned in the electrostatic system 2 is closed, and a cleaning process is started; specifically, the bidirectional booster pump 16 is started to positively rotate to inject high-pressure water into the elastic flushing pipeline 4, the elastic flushing pipeline 4 is not in a spiral tightening state under the action of the water pressure, the elastic flushing pipeline extends towards the bottom in the electrostatic precipitator body 1 and extends between the electrodes, when the elastic flushing pipeline 4 is completely expanded, the high-pressure water in the elastic flushing pipeline 4 impacts the upper jaw 411 and the lower jaw 412 of the flushing nozzle 41 through the water outlet opening corresponding to the flushing nozzle 41 and opens the flushing nozzle, then the flushing nozzle 41 sprays high-pressure flushing water flow to impact and clean pollutant particles deposited on the anode dust collecting plate 23 and the discharge cathode 24, and the pollutant particles are cleaned and fall into the ash bucket 13 under the impact action of the water flow; after the water spraying and cleaning of the anode dust collecting plate 23 and the discharge cathode 24 are finished, the bidirectional booster pump 16 is controlled to reversely rotate, the residual water in the elastic flushing pipe 4 is sucked back to the external cleaning liquid supply system, at this time, the upper jaw 411 and the lower jaw 412 are restored to the closed state under the action of the elastic seat 413 due to the disappearance of the water pressure, meanwhile, the auxiliary elastic flushing pipe 4 is retracted to the spirally tightened state due to the sucking back action of the bidirectional booster pump 16, then the bidirectional booster pump 16 is closed, and at this time, the elastic flushing pipe 4 keeps the spirally tightened state until the next cleaning flow starts.
The elastic flushing pipeline 4 can be made of metal or high polymer materials with good rebound and tensile properties, so that stress deformation, fatigue and breakage are avoided after repeated rebound and tensile motions, and a rebound structure, such as a spring leaf and the like, can be added outside the pipeline made of high polymers to assist in rebound. The flexible flushing pipe 4 can also be arranged in a collapsed state without cleaning as shown in fig. 8.
In the cleaning process, the discharge cathode 24 is a narrow plate-shaped electrode with a water drop-shaped cross section and comprises a discharge electrode arc end 241 and a discharge electrode tip 242, the discharge electrode arc end 241 faces the air inlet 11, the discharge electrode tip 242 faces the air outlet 12, and the discharge electrode tip 242 is in a sawtooth structure in the length direction of the discharge cathode 24 and is used for generating discharge corona and charging pollutant particles in the air flow; the anode dust collecting plates 23 are in a wide plate-shaped structure, a main air flow channel 25 is formed between two adjacent anode dust collecting plates 23, and a plurality of discharge cathodes 24 are arranged in the air flow direction in the main air flow channel 25; the anode dust collecting plate 23 is provided with a groove 231 corresponding to the shape of the discharge cathode 24, the discharge cathode 24 extends into the groove 231 but does not contact with the groove 231, the arc end 241 of the discharge electrode and the groove 231 and the side edge of the discharge cathode 24 and the groove 231 form a secondary air flow channel 26 ", so that the air flow and the water mist generated by the high-pressure water spray during cleaning can be divided into two parts by the discharge electrode tip 242 of the discharge cathode 24 when the electrode plates flow towards the air inlet 11, one part flows in the primary air flow channel 25 formed between the anode dust collecting plate 23, and the other part flows in the secondary air flow channel 26 formed between the discharge cathode 24 and the groove 231; since the tip 242 of the discharge electrode faces the air outlet 12, the arc end 241 of the discharge electrode faces the air inlet 11, and the shape of the groove 231 corresponds to that of the discharge cathode 24, at this time, under the guidance of the arc end 241 of the discharge electrode and the arc segment of the groove 231 corresponding to the arc end 241 of the discharge electrode, the direction of the water flow in the secondary air flow channel 26 is opposite to the direction of the water flow in the primary air flow channel 25, so that the water flow in the secondary air flow channel 26 obstructs the water flow in the primary air flow channel 25, and the return air flow is substantially reduced to zero after passing through the plurality of discharge cathodes 24 and the grooves 231. The structure can effectively avoid the problem that air flow and water mist generated by high-pressure water spraying in the water spraying and cleaning process of the wet electrostatic dust collector reversely leak to the previous stage from the air inlet 11, and additional control parts such as a sealing valve and the like do not need to be arranged at the air inlet 11.
The technical solutions in the above embodiments have clearly and completely described the contents of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (7)
1. A control method of a low-wind-resistance anti-return-wind wet electrostatic precipitator comprises an electrostatic precipitator body (1), wherein a bidirectional booster pump (16) is arranged at the upper part of the electrostatic precipitator body (1); the electrostatic dust collector body (1) is provided with an electrostatic system (2) and a flushing system; the electrostatic system (2) comprises an anode dust collecting plate (23) and a discharge cathode (24); the flushing system comprises a bidirectional booster pump (16) and an elastic flushing pipeline (4); the method is characterized in that: the elastic flushing pipeline (4) is in a spiral tightening state when not being cleaned, after the electrostatic system (2) in the electrostatic dust collector body (1) works for a period of time, a large amount of pollutant particles are deposited on the anode dust collecting plate (23) and the discharge cathode (24), the power supply of a part needing to be cleaned in the electrostatic system (2) is closed, and a cleaning process is started; specifically, the bidirectional booster pump (16) is started to rotate forward to inject high-pressure water into the elastic flushing pipeline (4), the elastic flushing pipeline (4) is not in a spiral tightening state under the action of water pressure, and the elastic flushing pipeline extends towards the bottom in the electrostatic dust collector body (1) and stretches into the space between the electrodes.
2. The method for controlling the low-wind-resistance return-air-proof wet electrostatic precipitator according to claim 1, wherein: flushing nozzles (41) are uniformly arranged on the elastic flushing pipeline (4); the elastic flushing pipeline (4) is provided with a water outlet opening at a position corresponding to the flushing nozzle (41), the flushing nozzle (41) comprises an upper jaw (411), a lower jaw (412) and an elastic seat (413), and the upper jaw (411) and the lower jaw (412) are movably arranged on the elastic flushing pipeline (4) through the respective corresponding elastic seats (413); and (3) while the elastic flushing pipe (4) is completely unfolded, high-pressure water in the elastic flushing pipe (4) impacts the upper jaw (411) and the lower jaw (412) of the flushing nozzle (41) through the water outlet opening corresponding to the flushing nozzle (41) and enables the flushing nozzle to be opened, and then the flushing nozzle (41) sprays high-pressure flushing water flow to impact and clean pollutant particles deposited on the anode dust collecting plate (23) and the discharge cathode (24), and the pollutant particles are cleaned under the impact of the water flow.
3. The method for controlling the low-wind-resistance return-air-proof wet electrostatic precipitator according to claim 2, wherein: after the water spraying cleaning of the anode dust collecting plate (23) and the discharge cathode (24) is finished, the bidirectional booster pump (16) is controlled to reversely rotate, residual water in the elastic flushing pipeline (4) is sucked out, at the moment, due to the disappearance of water pressure, the upper jaw (411) and the lower jaw (412) are restored to a closed state under the action of the elastic seat (413), meanwhile, due to the suck-back action of the bidirectional booster pump (16), the elastic flushing pipeline (4) is assisted to retract to a spiral tightening state, then the bidirectional booster pump (16) is closed, and at the moment, the elastic flushing pipeline (4) becomes a spiral tightening state.
4. The method for controlling the low-wind-resistance return-air-proof wet electrostatic precipitator according to claim 1, wherein: an air inlet (11) is formed in one side of the electrostatic dust collector body (1), and an air outlet (12) is formed in the other side of the electrostatic dust collector body (1); the anode dust collecting plate (23) and the discharge cathode (24) are arranged at intervals in parallel to the flow direction of the air flow; the discharge cathode (24) is a narrow plate-shaped electrode with a water drop-shaped cross section and comprises a discharge electrode arc end (241) and a discharge electrode tip (242), the discharge electrode arc end (241) faces the air inlet (11), and the discharge electrode tip (242) faces the air outlet (12); the anode dust collecting plate (23) is of a wide plate-shaped structure; the anode dust collecting plate (23) is provided with a groove (231) corresponding to the shape of the discharge cathode (24), and the discharge cathode (24) extends into the groove (231) but is not in contact with the groove (231).
5. The method for controlling the low-wind-resistance return-air-proof wet electrostatic precipitator according to claim 4, wherein: a main air flow channel (25) is formed between two adjacent anode dust collecting plates (23), and a plurality of discharge cathodes (24) are arranged in the air flow direction in the main air flow channel (25); the secondary airflow channel (26) is formed between the arc end (241) of the discharge electrode and the groove (231) and between the side edge of the discharge cathode (24) and the groove (231).
6. The method of controlling a low windage return air prevention wet electrostatic precipitator according to claim 5, wherein: after the airflow enters from the air inlet (11), the arc end (241) of the discharge electrode of the discharge cathode (24) divides the airflow into two parts, one part flows in the main airflow channel (25), and the other part flows in the secondary airflow channel (26); because the arc end (241) of the discharge electrode faces the air inlet (11), the tip (242) of the discharge electrode faces the air outlet (12), and the grooves (231) and the discharge cathode (24) are correspondingly shaped, the air flow in the main air flow channel (25) and the air flow in the secondary air flow channel (26) both flow towards the air outlet (12), and therefore, the structures of the anode dust collecting plate (23) and the discharge cathode (24) do not obstruct the air flow when the air flow flows from the air inlet (11) to the air outlet (12).
7. The method of controlling a low windage return air prevention wet electrostatic precipitator according to claim 5, wherein: when air flow and/or water mist flow generated by high-pressure cleaning water in the process of return air and/or cleaning flows between the pole plates towards the air inlet (11), the discharge electrode tip (242) of the discharge cathode (24) also divides the air flow and/or the water mist flow into two parts, one part flows in the main air flow channel (25), and the other part flows in the auxiliary air flow channel (26); the arc end (241) of the discharge electrode faces the air inlet (11) due to the fact that the tip end (242) of the discharge electrode faces the air outlet (12), and the shape of the recess (231) and the discharge cathode (24) correspond, in which case, under the guidance of the arc end (241) of the discharge electrode and the arc segment of the corresponding groove (231), the direction of the air flow and/or water mist flow in the secondary air flow channel (26) is opposite to the direction of the air flow and/or water mist flow in the main air flow channel (25), whereby the flow of air and/or water mist in the secondary air flow channel (26) is impeded by the flow of air and/or water mist in the primary air flow channel (25), the return air flow and/or the water mist flow is substantially reduced to zero after passing through a plurality of the discharge cathodes (24) and the grooves (231).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010937973.3A CN111921711B (en) | 2020-09-09 | 2020-09-09 | Control method of low-wind-resistance return-air-prevention wet electrostatic precipitator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010937973.3A CN111921711B (en) | 2020-09-09 | 2020-09-09 | Control method of low-wind-resistance return-air-prevention wet electrostatic precipitator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111921711A true CN111921711A (en) | 2020-11-13 |
| CN111921711B CN111921711B (en) | 2022-10-14 |
Family
ID=73309856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010937973.3A Active CN111921711B (en) | 2020-09-09 | 2020-09-09 | Control method of low-wind-resistance return-air-prevention wet electrostatic precipitator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111921711B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB265838A (en) * | 1926-06-12 | 1927-02-17 | Dilator Syringe Foreing Rights | Improvements in douche nozzle |
| JP2006263507A (en) * | 2005-03-22 | 2006-10-05 | Mitsubishi Electric Building Techno Service Co Ltd | Portable bubble generating unit |
| CN102274794A (en) * | 2010-06-11 | 2011-12-14 | 张荣群 | Automatic cleaning and maintenance system of high-voltage static air purifier |
| CN203517045U (en) * | 2013-10-15 | 2014-04-02 | 胡锋 | Telescopic water pipe |
| CN104180095A (en) * | 2014-07-30 | 2014-12-03 | 宁波馨莲五金工贸有限公司 | Glue-lining flexible water hose and processing method thereof |
| CN206604642U (en) * | 2017-03-23 | 2017-11-03 | 杭州萧越热电有限公司 | The electric cleaner of CFBB |
| CN107321750A (en) * | 2017-06-30 | 2017-11-07 | 国网浙江省电力公司温州供电公司 | Grid equipment data multidimensional correlation analysis system and its cleaning plant |
| CN107486427A (en) * | 2017-07-18 | 2017-12-19 | 浦江县顺光科技有限公司 | A kind of high effect dust cleaner |
| CN206881927U (en) * | 2017-07-07 | 2018-01-16 | 张丽娟 | A kind of cleaning device of wet electrical dust precipitator |
| CN208449613U (en) * | 2018-07-02 | 2019-02-01 | 江苏自强环保科技有限公司 | A kind of New type wet electrical dust collector device |
| CN208728237U (en) * | 2018-06-29 | 2019-04-12 | 光大环保技术研究院（深圳）有限公司 | A kind of sewage running piping cleaning device |
| CN210230756U (en) * | 2019-06-27 | 2020-04-03 | 梅州市金诚防水材料有限公司 | Cleaning mechanism for filling machine |
-
2020
- 2020-09-09 CN CN202010937973.3A patent/CN111921711B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB265838A (en) * | 1926-06-12 | 1927-02-17 | Dilator Syringe Foreing Rights | Improvements in douche nozzle |
| JP2006263507A (en) * | 2005-03-22 | 2006-10-05 | Mitsubishi Electric Building Techno Service Co Ltd | Portable bubble generating unit |
| CN102274794A (en) * | 2010-06-11 | 2011-12-14 | 张荣群 | Automatic cleaning and maintenance system of high-voltage static air purifier |
| CN203517045U (en) * | 2013-10-15 | 2014-04-02 | 胡锋 | Telescopic water pipe |
| CN104180095A (en) * | 2014-07-30 | 2014-12-03 | 宁波馨莲五金工贸有限公司 | Glue-lining flexible water hose and processing method thereof |
| CN206604642U (en) * | 2017-03-23 | 2017-11-03 | 杭州萧越热电有限公司 | The electric cleaner of CFBB |
| CN107321750A (en) * | 2017-06-30 | 2017-11-07 | 国网浙江省电力公司温州供电公司 | Grid equipment data multidimensional correlation analysis system and its cleaning plant |
| CN206881927U (en) * | 2017-07-07 | 2018-01-16 | 张丽娟 | A kind of cleaning device of wet electrical dust precipitator |
| CN107486427A (en) * | 2017-07-18 | 2017-12-19 | 浦江县顺光科技有限公司 | A kind of high effect dust cleaner |
| CN208728237U (en) * | 2018-06-29 | 2019-04-12 | 光大环保技术研究院（深圳）有限公司 | A kind of sewage running piping cleaning device |
| CN208449613U (en) * | 2018-07-02 | 2019-02-01 | 江苏自强环保科技有限公司 | A kind of New type wet electrical dust collector device |
| CN210230756U (en) * | 2019-06-27 | 2020-04-03 | 梅州市金诚防水材料有限公司 | Cleaning mechanism for filling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111921711B (en) | 2022-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101610240B1 (en) | Bi-directional dust collection system | |
| KR101170935B1 (en) | Multi-cleaning device to wash electrical precipitator | |
| CN111921712B (en) | Low-wind-resistance anti-return-air wet electrostatic dust collector | |
| CN103056030B (en) | Wet-type vibrating-wire bipolar electrostatic coagulation deduster | |
| WO2007073020A1 (en) | Electrostatic precipitator using induction voltage | |
| CN111921714B (en) | Return air-proof electrostatic dust collector | |
| KR101549793B1 (en) | Multi-cleaning device to wash electrical precipitator | |
| CN114029165B (en) | Wet-type electric dust remover for treating atmospheric pollution and dust removing method thereof | |
| CN202942963U (en) | Wet-type vibration wire double-pole static condensation combined dust remover | |
| CN111921711B (en) | Control method of low-wind-resistance return-air-prevention wet electrostatic precipitator | |
| KR20210022211A (en) | Wet electrostatic precipitator for cleaning water film nozzle using water hammer phenomenon | |
| CN208427228U (en) | A kind of cathode line and electric precipitator | |
| CN201295643Y (en) | Horizontal plasma purifying machine | |
| CN107149982A (en) | A kind of lateral bipolar electric-bag complex dust collector | |
| KR102127087B1 (en) | Dry Cleaning Electric dust collector | |
| JP6390004B2 (en) | Electric dust collector | |
| CN112108269A (en) | Pulse charge wet-type electric precipitation demister, treatment method and application thereof | |
| CN215541782U (en) | Wet electrostatic dust collector | |
| CN204841948U (en) | Antidrip pipeline | |
| KR100992307B1 (en) | Dust collecting plate cleaning device of electrostatic precipitator | |
| KR200175858Y1 (en) | Apparatus for spray water in electrostatic precipitator | |
| CN212759139U (en) | Wet electrostatic precipitator equipment of corrosion-resistant type flue gas | |
| KR102405871B1 (en) | Modular electrostatic precipitator with integral cleaning part | |
| CN111774178B (en) | High-pressure wet-type demisting dust remover | |
| CN204337947U (en) | A kind of plasma and dust collector of water curtain |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220919 Address after: No. 168, Xingye Road, Neixiang County, Nanyang City, Henan Province 473000 Applicant after: Nanyang Zhongyu Power Generation Co.,Ltd. Address before: No. 3, Area A, Anhuan Science and Technology Park, Wuhan Institute of Safety and Environmental Protection, Sinosteel Group, Wuhan City, Hubei Province, 430000 Applicant before: Li Shuai |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |