CN112403679B - Method for verifying contact between anode plate and cathode wire of electrostatic dust removal electric field - Google Patents
Method for verifying contact between anode plate and cathode wire of electrostatic dust removal electric field Download PDFInfo
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- CN112403679B CN112403679B CN202011091726.2A CN202011091726A CN112403679B CN 112403679 B CN112403679 B CN 112403679B CN 202011091726 A CN202011091726 A CN 202011091726A CN 112403679 B CN112403679 B CN 112403679B
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- 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
- B03C3/04—Plant or installations having external electricity supply dry type
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- 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
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- 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
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/32—Checking the quality of the result or the well-functioning of the device
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Abstract
The invention relates to a method for verifying whether an anode plate and a cathode wire of an electrostatic dust removal electric field are contacted, according to the principle that the cathode wire and the anode plate are grounded and the insulation resistance between the cathode wire and the anode plate is low, firstly, a high-voltage megger is used for telemetering the insulation resistance between the cathode wire and the anode plate to determine whether the electric field is completely grounded or not and the state of potential danger of grounding; secondly, according to the insulation resistance value obtained through remote measurement, a cathode wire framework of the cathode wire is wholly shaken by a completely grounded electric field, and a complete grounding fault is quickly found out through friction sound by utilizing the principle that the grounding necessarily generates friction. The invention has good use effect, no need of ascending operation and root-by-root observation, easy operation, high efficiency and no increase of any cost.
Description
Technical Field
The application belongs to the technical field of industrial automation control, and particularly relates to a method for verifying whether an anode plate and a cathode line of an electrostatic dust collection electric field are in contact or not.
Background
The electrostatic precipitator is widely applied to industries such as metallurgy, thermal power plants and the like, and has the advantages of simple internal structure and low operating cost, so that the electrostatic precipitator is widely applied to other industries for dust removal. The electrostatic precipitator mainly depends on the inside negative pole line and the positive plate to constitute the electrostatic field and carry out dust purification, and in order to guarantee dust removal effect, general specification dust remover negative pole line quantity is at thousands, and large-scale dust remover negative pole line quantity is more than ten thousand to the mounted position is at the high altitude more than 10 meters. Similarly, the number of anode plates forming an electrostatic field with the cathode wires is the same, and the installation position is high. The distance between the cathode wire and the anode plate is kept between 150mm and 200mm, the anode plate is directly connected with the ground, and the cathode wire is connected with a rectifying direct current transformer which generates tens of thousands of volts of high voltage. This structure requires: a large number of cathode lines must be ensured that each cannot make contact with the anode plate. If one cathode wire contacts with the anode plate, the whole dust removing electric field is grounded and stops running.
In the production process, the temperature of flue gas in an electrostatic dust removal electric field is above 120 ℃, dust is mostly a mixture consisting of toxic and harmful substances, and personnel cannot approach the dust removal electric field. The method is characterized in that the process of ground fault treatment firstly needs to be stopped for cooling for more than 6 hours, the temperature in the dust remover is reduced to be within 48 ℃, most of dust in the dust remover falls down, a maintainer wears a mask to enter an electric field, and uses a flashlight or other luminophors to observe the dust one by one with eyes, one medium-sized dust remover needs to be checked for the inside of the electric field for more than 12 hours once, the dust remover is limited by vision and checking means, the ground fault point is searched for, the dust removing electric field cannot be powered on to operate on time, and the production stop time of a sintering machine is longer than 18 hours.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for verifying whether an anode plate and a cathode wire of an electrostatic dust collection electric field are contacted, which can quickly and conveniently verify whether the anode plate and the cathode wire are contacted.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a method for verifying whether an anode plate and a cathode wire of an electrostatic dust removal electric field are contacted comprises the steps of firstly, telemetering insulation resistance between the cathode wire and the anode plate by using a high-voltage megger according to the principle that the cathode wire and the anode plate are grounded and the insulation resistance between the cathode wire and the anode plate is low, and determining whether the electric field is completely grounded or not and the potential hazard of grounding exists; and secondly, according to the insulation resistance value obtained by remote measurement, a cathode wire framework of the cathode wire is wholly shaken by the completely grounded electric field, and a complete ground fault is quickly found out through friction sound by utilizing the principle that the grounding necessarily generates friction.
The technical scheme of the invention is further improved as follows: the specific process is as follows:
divide into a plurality of units with the negative pole line and the anode plate of electrostatic precipitator electric field, the unit is examined one by one, to one of them unit of electric field, earlier with the L wiring end and the negative pole line firm in connection of high-pressure megger, E wiring end and anode plate firm in connection, wave the high-pressure megger according to certain speed, judge the state of this unit according to following resistance:
A. if the insulation resistance value of the high-voltage megohmmeter is more than 50 megaohms, the cathode wire and the anode plate of the unit are proved not to be completely grounded or grounded, and the unit does not need to search a fault point;
B. if the insulation resistance value of the high-voltage megger is between 50 megaohms and 0.5 megaohms, judging that the electric field of the unit has a potential grounding hazard, and searching operation can be carried out because the distance interval between the cathode line and the anode plate is small, wherein the searching operation comprises searching whether the cathode line and the anode plate deform, whether dust is in contact with the cathode line, whether a magnetic shaft and a porcelain sleeve have a dust creepage phenomenon, and whether the cathode line falls off;
C. if the insulation resistance value of the high-voltage megger is between 0.5 megaohm and 0 megaohm, the electric field of the unit is judged to have a completely grounded fault, then the cathode wire frame is shaken by hands, the cathode wire frame is hung below a cathode wire hanging beam of a cathode wire, a group of cathode wire frames are shaken, a plurality of cathode wires on the cathode wire frames are simultaneously checked, if metal friction sound is heard during shaking, the cathode wire of the frame is carefully checked, and then a ground fault point can be quickly found out.
The technical scheme of the invention is further improved as follows: the high-pressure megger is a 2500V high-pressure megger.
The technical scheme of the invention is further improved as follows: the high pressure shaker is shaken at a rate of 100-140 revolutions per minute.
The technical scheme of the invention is further improved as follows: dividing the cathode wire and the anode plate of the electrostatic dust removal electric field into 6-16 units; 32 cathode lines are arranged on the cathode wire framework.
The technical scheme of the invention is further improved as follows: an auditory bar was used to listen to the sound of metal rubbing. The listening rod is an ideal tool for checking machine and equipment faults, water and gas leakage of the valve and underground water and sound transmission of a coal mine, and the problem part can be accurately judged by utilizing a conduction principle. The inspection tool is an ideal inspection tool for industries such as petroleum, chemical engineering, petrifaction, power generation, metallurgy, mines, coal mines, machinery and the like.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
the invention divides nearly ten thousand cathode lines into several units according to the electric field, one dust remover is generally divided into 6-16 units from thousands to ten thousand cathode lines, the method is utilized to detect the number of units (4-10) which do not need to search for fault points within 30 minutes, the electric field search of the units (2-4) with grounding hidden troubles needs 1.5-2.5 hours, the electric field search of the completely grounding units (1-3) needs 20-50 minutes, the fault of the whole electric field is generally processed within 2-4 hours, the time is shortened by more than 10 hours compared with the prior art, and the time is saved and the efficiency is high.
The invention has good use effect, no need of climbing operation and manual observation, easy operation, high efficiency and no increase of any cost.
Drawings
FIG. 1 is a schematic diagram of the telemetric resistance of the cathode and anode plates of the present invention;
FIG. 2 is a schematic diagram of a wobble cathode line frame to determine a fault point according to the present invention;
wherein: 1. the device comprises an anode plate, 2, a cathode wire, 3, a high-voltage megger, 4, a ground fault point, 5, a cathode wire hanging beam, 6 and a cathode wire framework.
Detailed Description
The present invention will be described in further detail with reference to examples.
The invention discloses a method for verifying whether an anode plate and a cathode line of an electrostatic dust collection electric field are in contact or not, which is shown in a figure 1-figure 2 and comprises the following steps: according to the principle that the cathode wire 2 and the anode plate 1 are grounded and the insulation resistance value between the cathode wire 2 and the anode plate 1 is low, firstly, the insulation resistance value is telemetered between the cathode wire 2 and the anode plate 1 by using a high-voltage megger 3, and the states of whether the electric field is completely grounded and the potential hazard of grounding exist or not are determined; secondly, according to the insulation resistance value obtained by remote measurement, the cathode wire frame 6 of the cathode wire 2 is wholly shaken by the electric field which is completely grounded, and the complete grounding fault is quickly found out through the friction sound by utilizing the principle that the grounding necessarily generates friction.
The specific process is as follows:
divide into a plurality of units with the negative pole line 2 and the anode plate 1 of electrostatic precipitator electric field, the unit is inspected one by one, to one of them unit of electric field, earlier with high-pressure megger 3's L wiring end and 2 firm in connections of negative pole line, E wiring end and 1 firm in connections of anode plate, wave high-pressure megger 3 according to certain speed, judge the state of this unit according to following resistance:
A. if the insulation resistance value of the high-voltage megger 3 is more than 50 megaohms, the cathode wire 2 and the anode plate 1 of the unit are proved not to have the hidden danger of complete grounding or grounding, and the unit does not need to search a fault point;
B. if the insulation resistance value of the high-voltage megger 3 is between 50 megaohms and 0.5 megaohms, the potential grounding hazard of the electric field of the unit is judged, and the distance interval between the cathode line 2 and the anode plate 1 is small, so that the searching operation can be carried out, wherein the searching operation comprises the steps of searching whether the cathode line 2 and the anode plate 1 are deformed, whether dust is in contact with the cathode line 2, whether a magnetic shaft and a porcelain sleeve have a dust creepage phenomenon, and whether the cathode line 2 falls off;
C. if the insulation resistance value of the high-voltage megger 3 is between 0.5 megaohm and 0 megaohm, the electric field of the unit is judged to have a completely grounded fault, then the cathode line frame 6 is shaken by hands, the cathode line frame 6 is suspended below the cathode line hanging beam 5 of the cathode line 2, a group of cathode line frames 6 are shaken, a plurality of cathode lines 2 on the cathode line frame 6 are simultaneously checked, if metal friction sound is heard during shaking, the cathode line 2 of the frame is carefully checked, and then the ground fault point 4 can be quickly found out.
The high-voltage megger 3 is a 2500V high-voltage megger, and the 2500V high-voltage megger is conventional technology, so that the selling price is not high, the use is flexible, and the cost performance is high.
The high voltage rocking meter 3 is shaken at a speed of 100-140 revolutions per minute, preferably 120 revolutions per minute, which is not too fast or too slow, which does not damage the cathode wire 2 and the anode plate 1, and which can also yield a reliable insulation resistance value.
Dividing the cathode wires 2 and the anode plates 1 of the electrostatic dust removal electric field into 6-16 units, wherein the classification quantity can also be adjusted according to specific conditions, such as more than 20 units; 32 cathode lines 2 are provided on one group of the cathode line frames 6, and the number of the cathode lines 2 to be laid out is set at the time of mounting.
An auditory bar was used to listen to the sound of metal rubbing. The listening rod is an ideal tool for checking machine and equipment faults, water and gas leakage of the valve and underground water and sound transmission of a coal mine, and the problem part can be accurately judged by utilizing a conduction principle. The inspection tool is an ideal inspection tool for industries such as petroleum, chemical engineering, petrifaction, power generation, metallurgy, mines, coal mines, machinery and the like.
According to the invention, the grounding fault points 4 of the cathode wire 2 and the anode plate 1 are not required to be manually ascended and searched one by one, the cathode wire 2 and the anode plate 1 of the electrostatic dust collection electric field are subjected to insulation test by using the 2500V high-voltage megger 3, then the manhole door of the electric field is closed, and the grounding fault points 4 are quickly and accurately found by shaking the cathode wire frame 6 by using the listening rod.
The cathode lines 2 in the electrostatic dust collector range between thousands or tens of thousands, and the vertical arrangement height of the cathode lines 2 is more than 10 meters. The ground fault of the cathode line 2 and the anode plate 1 causes the electrostatic precipitator to be incapable of operating. The manual observation and detection method only can be used for one-by-one observation, and in addition, dangerous work of climbing is needed. Due to the limitation of the detection method and the operation environment, the detection time is long, the result is inaccurate, and the overhauling quality of the electrostatic dust collector cannot be guaranteed, so that the overhauling work of the whole sintering machine is delayed. The method can quickly and accurately judge the specific positions of the grounding points of the cathode wire 2 and the anode plate 1 of the electrostatic dust collection electric field without ascending a height and observing one by one, and has extremely high popularization and application values.
Claims (5)
1. A method for verifying whether an anode plate and a cathode line of an electrostatic dust removal electric field are in contact is characterized in that: according to the principle that the cathode wire (2) and the anode plate (1) are grounded and the insulation resistance between the cathode wire and the anode plate is low, firstly, a high-voltage megger (3) is used for telemetering the insulation resistance between the cathode wire (2) and the anode plate (1) to determine whether the electric field is completely grounded or not and the state of potential ground hazard; secondly according to the insulating resistance size that the telemetering measurement reachd, whole negative pole line frame (6) of rocking negative pole line (2) to the electric field of complete ground connection utilize the principle that ground connection must produce friction, find out complete earth fault fast through the friction sound, concrete process is:
divide into a plurality of units with negative pole line (2) and anode plate (1) of electrostatic precipitator electric field, examine one by one unit, to one of them unit of electric field, earlier with L wiring end and negative pole line (2) firm in connection, E wiring end and anode plate (1) firm in connection of high pressure megger (3), wave high pressure megger (3) according to certain speed, judge the state of this unit according to following resistance:
A. if the insulation resistance value of the high-voltage megger (3) is more than 50 megaohms, the cathode wire (2) and the anode plate (1) of the unit are proved not to be completely grounded or grounded, and the unit does not need to search a fault point;
B. if the insulation resistance value of the high-voltage megger (3) is between 50 megaohms and 0.5 megaohms, the potential grounding hazard of the electric field of the unit is judged, and the distance interval between the cathode wire (2) and the anode plate (1) is small, so that the searching operation can be carried out, wherein the searching operation comprises the steps of searching whether the cathode wire (2) and the anode plate (1) deform, whether dust is in contact with the cathode wire (2), whether a magnetic shaft and a porcelain sleeve have a dust creepage phenomenon, and whether the cathode wire (2) falls off;
C. if the insulation resistance value of the high-voltage megger (3) is between 0.5 megaohm and 0 megaohm, the electric field of the unit is judged to have a completely grounded fault, then the cathode line frame (6) is shaken by hands, the cathode line frame (6) is hung below a cathode line hanging beam (5) of a cathode line (2), a group of cathode line frames (6) are shaken, a plurality of cathode lines (2) on the cathode line frame (6) are simultaneously checked, if metal friction sound is heard during shaking, the cathode line (2) of the frame is carefully checked, and then a ground fault point (4) can be quickly found out.
2. The method for verifying whether the anode plate is in contact with the cathode wire in the electrostatic dust removal electric field according to claim 1, wherein the method comprises the following steps: the high-pressure megger (3) is a 2500V high-pressure megger.
3. The method for verifying whether the anode plate is in contact with the cathode wire in the electrostatic dust removal electric field according to claim 1, wherein the method comprises the following steps: the high pressure rocking meter (3) is shaken at a speed of 100-140 revolutions per minute.
4. The method of claim 1, wherein the step of verifying the contact between the anode plate and the cathode line comprises the steps of: the cathode lines (2) and the anode plates (1) of the electrostatic dust removal electric field are divided into 6-16 units.
5. The method for verifying whether the anode plate is in contact with the cathode wire in the electrostatic dust removal electric field according to claim 1, wherein the method comprises the following steps: an auditory bar was used to listen to the sound of metal rubbing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011091726.2A CN112403679B (en) | 2020-10-13 | 2020-10-13 | Method for verifying contact between anode plate and cathode wire of electrostatic dust removal electric field |
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| CN202011091726.2A CN112403679B (en) | 2020-10-13 | 2020-10-13 | Method for verifying contact between anode plate and cathode wire of electrostatic dust removal electric field |
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| CN112403679B true CN112403679B (en) | 2022-10-25 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540008A (en) * | 2010-12-17 | 2012-07-04 | 中冶宝钢技术服务有限公司 | Cable fault detection instrument |
| CN206082848U (en) * | 2016-08-29 | 2017-04-12 | 朱开亮 | Electrostatic precipitator electric field zone control system |
| JP2018130710A (en) * | 2017-02-17 | 2018-08-23 | 三菱電機株式会社 | Air cleaner |
| CN110355001A (en) * | 2019-08-06 | 2019-10-22 | 王波 | Electrostatic precipitator rapid protection system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1119534A (en) * | 1997-07-04 | 1999-01-26 | Pioneer Electron Corp | Electrostatic air cleaner and dust collecting paper therefor |
| CN205761800U (en) * | 2016-07-01 | 2016-12-07 | 浙江杰隆环境科技有限公司 | A kind of cathode line fixed structure of waste gas purification apparatus |
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2020
- 2020-10-13 CN CN202011091726.2A patent/CN112403679B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540008A (en) * | 2010-12-17 | 2012-07-04 | 中冶宝钢技术服务有限公司 | Cable fault detection instrument |
| CN206082848U (en) * | 2016-08-29 | 2017-04-12 | 朱开亮 | Electrostatic precipitator electric field zone control system |
| JP2018130710A (en) * | 2017-02-17 | 2018-08-23 | 三菱電機株式会社 | Air cleaner |
| CN110355001A (en) * | 2019-08-06 | 2019-10-22 | 王波 | Electrostatic precipitator rapid protection system |
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