Pneumatic pulse injection ash removal cathode system

Abstract

The utility model provides a pneumatic pulse injection ash removal cathode system, and relates to the technical field of ash removal equipment. Comprising an electric dust remover shell, three sets of cathode tube systems are installed in the electric dust remover shell, and a plurality of tubular cathode wires distributed at equal intervals are arranged at the bottoms of the cathode tube systems. The electric dust remover has the advantages that huge vibration force deviation caused by unbalanced vibration force transmission of a traditional electric dust remover is eliminated; the accumulated dust at the discharge end of the polar line can be completely and thoroughly removed through the precise polar line opening design; the pneumatic ash removal does not cause any damage to the equipment structure; movable parts and force transmission parts in the electric dust remover are eliminated through pneumatic dust removal, maintenance-free or less maintenance of an equipment system can be achieved, and due to the fact that water and dust removal and heating and heat preservation treatment are conducted on compressed air in the scheme, local condensation corrosion of low-temperature air to an electric field is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to ash cleaning equipment technical field especially relates to a gas force pulse injection ash cleaning cathode system. BACKGROUND

[0002] The electric dust collector is used in electric power, metallurgy, chemical industry, building material and other important fields as important equipment for air pollution control, and the cathode system and the anode system are the most important core components of the electric dust collector.

[0003] For a long time, the cathode line and the anode plate of the electric dust collector are mostly cleaned by the rapping device, especially the cathode system is 100% cleaned by rapping.

[0004] 1. If the rapping force is too large, the pole line is easy to be broken or the pole line connection weld is vibrated to cause electric field short circuit and unable to run, and some pole lines in working conditions (such as sintering machine head electric dust collector) are difficult to completely remove the pole line ash even if the pole line is vibrated; if the rapping force is too small, the expected rapping cleaning effect cannot be achieved, and the pole line is seriously packed with ash after long time running and loses the discharge function.

[0005] 2. The electric dust collector cleaned by the traditional rapping has the problem of serious rapping force attenuation, that is, the pole line is subjected to very large force near the rapping hammer, but the rapping force sharply attenuates on the side far away from the rapping device, which causes the failure to clean the ash normally. For example, the pole line frame height of a general project is about 15 meters, the rapping force needs to be transmitted for 5 meters at the farthest, and the inclined distance can reach 7 meters, and the cathode line at the farthest place can only reach 1 / 5 of the maximum rapping force.

[0006] 3. The traditional rapping system has large occupied area and complex structure, and has great difficulty in maintenance. The rapping cleaning system is prone to failure in high temperature, high dust and high corrosion environment, and once failure occurs, the system needs to be stopped for maintenance.

[0007] Therefore, the utility model provides a gas force pulse injection ash cleaning cathode system. UTILITY MODEL CONTENT

[0008] The utility model aims at solving the defects in the prior art and provides a gas force pulse injection ash cleaning cathode system.

[0009] In order to achieve the above object, the utility model adopts the following technical scheme: a gas force pulse injection ash cleaning cathode system, including electric dust collector shell,

[0010] The inside of the electric dust collector shell is provided with three groups of cathode tube systems, the bottom of each cathode tube system is provided with a plurality of equidistantly distributed tubular cathode wires, and the upper side of each cathode tube system is provided with an insulation device;

[0011] The outer side of the insulation device is provided with a gas source pipeline, the gas source pipeline is divided into three groups, namely a first gas source line, a second gas source line and a third gas source line, one end of the first gas source line is provided with an air compressor inlet, the outer side of the first gas source line and on one side of the air compressor inlet is provided with an electric heater, one side of the electric heater is provided with a gas storage tank, and the side of the gas storage tank away from the electric heater is provided with a differential pressure transmitter;

[0012] One end of the second gas source line is provided with a PLC controller, and the outer side of the second gas source line is provided with a first electromagnetic pulse valve;

[0013] One end of the third gas source line is provided with a connecting circuit, the other end of the connecting circuit is connected with the gas source pipeline and penetrates through another gas source pipeline, the three gas source pipelines are connected through the connecting circuit, and the PLC controller is conveniently controlled in unison;

[0014] The outer side of the tubular cathode wire is provided with a plurality of equidistantly distributed cathode wire discharge ends, the outer side of the cathode wire discharge end is provided with a plurality of equidistantly distributed blow holes, and the gas flow is sequentially blown out from top to bottom along the blow holes on the outer side of each tubular cathode wire, so that the dust deposited on the cathode wire discharge end is blown away, thereby achieving the purpose of dust removal.

[0015] As a preferred embodiment, a second temperature meter is installed on the outer side of the gas source pipeline and between the electric heater and the gas storage tank, the second temperature meter is used for real-time temperature control monitoring processing of circuit changes, a third electromagnetic pulse valve is installed on the outer side of the gas source pipeline close to the insulation device, and a first temperature meter is installed on the outer side of the gas source pipeline and between the third electromagnetic pulse valve and the differential pressure transmitter, the first temperature meter is used for real-time temperature control monitoring processing of circuit changes.

[0016] The technical effect of the above further scheme is that the first temperature meter and the second temperature meter are used for real-time temperature control monitoring processing of circuit changes.

[0017] As a preferred embodiment, an electric dust collector roof insulation layer is installed on the inner wall of the electric dust collector shell, the electric dust collector roof insulation layer is used for keeping the temperature inside the electric dust collector stable, preventing the negative impact of too low temperature on the working efficiency of the electric dust collector and the normal operation of the equipment, a second electromagnetic pulse valve is installed on the outer side of the third gas source line, and a first differential pressure transmitter is installed between the third gas source line and the connecting circuit, the first differential pressure transmitter is used for measuring the pressure difference between different points of the connecting circuit to the gas source pipeline and converting the pressure difference into an electrical signal output.

[0018] The technical effect of the further scheme is that the electric dust collector roof insulation layer is used to keep the temperature inside the electric dust collector stable, and prevent the temperature from being too low to affect the working efficiency of the electric dust collector and the normal operation of the equipment.

[0019] As a preferred embodiment, a second differential force transmitter is mounted on the outside of the connecting circuit, and the second differential force transmitter is used to measure the pressure difference between the connecting circuit and different points of the two gas source pipelines, and convert the pressure difference into an electrical signal output.

[0020] The technical effect of the further scheme is that the second differential force transmitter is used to measure the pressure difference between the connecting circuit and different points of the two gas source pipelines, and convert the pressure difference into an electrical signal output.

[0021] As a preferred embodiment, the first electromagnetic pulse valve, the second electromagnetic pulse valve, the first differential force transmitter, the second differential force transmitter, the cathode wire discharge end, the third electromagnetic pulse valve, the gas source pipeline, the first temperature meter, the differential pressure transmitter, the second temperature meter and the electric heater are electrically connected with the PLC controller, and the PLC controller is used to control the operation of the first electromagnetic pulse valve, the second electromagnetic pulse valve, the first differential force transmitter, the second differential force transmitter, the cathode wire discharge end, the third electromagnetic pulse valve, the gas source pipeline, the first temperature meter, the differential pressure transmitter, the second temperature meter and the electric heater, so as to realize unified management of the electric power equipment.

[0022] The technical effect of the further scheme is that the PLC controller is used to control the operation of the first electromagnetic pulse valve, the second electromagnetic pulse valve, the first differential force transmitter, the second differential force transmitter, the cathode wire discharge end, the third electromagnetic pulse valve, the gas source pipeline, the first temperature meter, the differential pressure transmitter, the second temperature meter and the electric heater, so as to realize unified management of the electric power equipment.

[0023] Compared with the prior art, the utility model has the advantages and positive effects that,

[0024] In the scheme, the traditional cathode wire relying on vibration and knocking for ash removal is changed to a high-temperature and high-pressure pulse ash removal method, which has the advantages that:

[0025] 1. The vibration and knocking force imbalance caused by the traditional electric dust collector is eliminated, and the vibration and knocking force deviation is greatly reduced.

[0026] 2. Through precise pole line opening design, the dust accumulated at the pole line discharge end can be completely and thoroughly removed.

[0027] 3. Pneumatic ash removal does not cause any damage to the equipment structure.

[0028] The pneumatic dust cleaning eliminates the internal moving parts and force transmission parts of the electric dust collector, and the device system can be maintained free or less;

[0029] The clean air from the air compressor is stored in the air tank after passing through the electric heater; when the cathode system of an electric field of the electric dust collector needs to be cleaned, the control system sends an opening instruction to the pulse valve of the electric field through the PLC controller, the third electromagnetic pulse valve is opened instantaneously to establish a gas source channel, the high-pressure hot gas source reaches the internal gas source pipeline of the electric field from the air tank, and reaches the internal of the tubular cathode wire which needs to be cleaned and forms an instant strong airflow, the airflow is sprayed out from top to bottom along the blowing holes outside each tubular cathode wire in turn, so that the dust deposited on the discharge end of the cathode wire is blown away, thereby achieving the purpose of cleaning dust, and the opening time of the first electromagnetic pulse valve, the second electromagnetic pulse valve and the third electromagnetic pulse valve is 100-300 milliseconds, so that a small amount of high-temperature compressed air can clean all the needle-like wires of an electric field, and the low-temperature air is avoided from causing local dew condensation corrosion to the electric field. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 A schematic diagram of the overall structure of the pneumatic pulse blowing dust cleaning cathode system is provided in the utility model.

[0031] Figure 2 A schematic diagram of the tubular cathode wire structure of the pneumatic pulse blowing dust cleaning cathode system is provided in the utility model. Figure 1 ;

[0032] Figure 3 A schematic diagram of the tubular cathode wire structure of the pneumatic pulse blowing dust cleaning cathode system is provided in the utility model. Figure 2 .

[0033] LEGEND:

[0034] 1, cathode tube system; 11, first electromagnetic pulse valve; 12, second electromagnetic pulse valve; 13, first differential force transmitter; 14, PLC controller; 15, second differential force transmitter;

[0035] 2, tubular cathode wire; 21, cathode wire discharge end; 22, blowing hole;

[0036] 3, electric dust collector shell;

[0037] 4, insulation device; 41, third electromagnetic pulse valve; 42, gas source pipeline; 43, first temperature meter; 44, differential pressure transmitter; 45, air tank; 46, second temperature meter; 47, electric heater; 48, air compressor inlet;

[0038] 5, electric dust collector roof insulation layer. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] like Figures 1-3 As shown, this embodiment provides a technical solution: a pneumatic pulse jet cleaning cathode system, including an electrostatic precipitator housing 3, three sets of cathode tube systems 1 are installed inside the electrostatic precipitator housing 3, and multiple equally spaced tubular cathode wires 2 are provided at the bottom of each cathode tube system 1, and an insulating device 4 is installed above each cathode tube system 1.

[0041] In this scheme, an air source pipeline 42 is installed on the outside of the insulating equipment 4. The air source pipeline 42 is divided into three groups, which are respectively called the first air source line, the second air source line and the third air source line. An air compressor inlet 48 is installed at one end of the first air source line. An electric heater 47 is installed on the outside of the first air source line and on the side of the air compressor inlet 48. An air storage tank 45 is installed on one side of the electric heater 47. A differential pressure transmitter 44 is installed on the side of the air storage tank 45 away from the electric heater 47.

[0042] In this scheme, a PLC controller 14 is installed at one end of the second gas source line, and a first electromagnetic pulse valve 11 is installed on the outside of the second gas source line; a connecting circuit is installed at one end of the third gas source line, and the other end of the connecting circuit is connected to the gas source pipeline 42 and passes through another gas source pipeline 42. The three gas source pipelines 42 are connected through the connecting circuit, so that the PLC controller 14 can perform unified control.

[0043] In this scheme, multiple equally spaced cathode discharge ends 21 are installed on the outside of the tubular cathode wire 2. Multiple equally spaced blow holes 22 are opened on the outside of the cathode discharge ends 21. The airflow is sprayed out from top to bottom along the blow holes 22 on the outside of each tubular cathode wire 2, which can blow away the dust deposited on the cathode discharge ends 21, thereby achieving the purpose of dust removal.

[0044] Going a step further, such as Figure 1 As shown: In this scheme, a second thermometer 46 is installed outside the gas source pipeline 42 and between the electric heater 47 and the gas storage tank 45. The second thermometer 46 is used for real-time temperature control monitoring and processing of circuit changes.

[0045] In this scheme, a third electromagnetic pulse valve 41 is installed on the outer side of the gas source pipeline 42 near the insulating equipment 4. A first thermometer 43 is installed on the outer side of the gas source pipeline 42 and between the third electromagnetic pulse valve 41 and the differential pressure transmitter 44. The first thermometer 43 is used for real-time temperature control monitoring and processing of circuit changes.

[0046] Going a step further, such as Figure 1 As shown: In this scheme, the inner wall of the electrostatic precipitator shell 3 is equipped with an electrostatic precipitator roof insulation layer 5. The electrostatic precipitator roof insulation layer 5 is used to maintain the stability of the internal temperature of the electrostatic precipitator and prevent the temperature from being too low, which would have a negative impact on the working efficiency of the electrostatic precipitator and the normal operation of the equipment.

[0047] Going a step further, such as Figure 1 As shown, in this scheme, a second electromagnetic pulse valve 12 is installed on the outside of the third gas source line, and a first differential force transmitter 13 is installed between the third gas source line and the connecting circuit. The first differential force transmitter 13 is used to measure the pressure difference between different points of the connecting circuit and the gas source pipeline 42, and convert the pressure difference into an electrical signal output.

[0048] In this scheme, a second differential pressure transmitter 15 is installed on the outside of the connecting circuit. The second differential pressure transmitter 15 is used to measure the pressure difference between the connecting circuit and the two gas source pipelines 42 at different points, and converts the pressure difference into an electrical signal output.

[0049] Going a step further, such as Figures 1-3 As shown, in this scheme, the first electromagnetic pulse valve 11, the second electromagnetic pulse valve 12, the first differential pressure transmitter 13, the second differential pressure transmitter 15, the cathode discharge terminal 21, the third electromagnetic pulse valve 41, the gas source pipeline 42, the first thermometer 43, the differential pressure transmitter 44, the second thermometer 46, and the electric heater 47 are all electrically connected to the PLC controller 14. The PLC controller 14 is used to control the operation of the first electromagnetic pulse valve 11, the second electromagnetic pulse valve 12, the first differential pressure transmitter 13, the second differential pressure transmitter 15, the cathode discharge terminal 21, the third electromagnetic pulse valve 41, the gas source pipeline 42, the first thermometer 43, the differential pressure transmitter 44, the second thermometer 46, and the electric heater 47, thereby realizing unified management of power equipment.

[0050] The principle of the pulse-jet cleaning cathode system: Utilizing a high-pressure pulse air source, precise blowing is applied to the electrode discharge end. Under the instantaneous high-pressure airflow of approximately 0.5 MPa, the dust accumulated at the electrode discharge end is instantly stripped away, thus maintaining the cleanliness of the electrode discharge end. Based on previous electrostatic precipitator rapping cleaning cycles, the typical electrode cleaning cycle is 30 to 60 minutes.

[0051] Working principle:

[0052] like Figures 1-3As shown:

[0053] In this scheme, the traditional cathode wire relying on vibration cleaning is replaced by high-temperature and high-pressure pulse cleaning method, generally about 130-180℃, which has the following advantages:

[0054] 1. Eliminate the huge deviation of vibration force caused by uneven transmission of traditional electric dust collector vibration force;

[0055] 2. Through accurate pole line opening design, the accumulated dust at the discharge end of the pole line can be completely and thoroughly removed;

[0056] 3. Pneumatic cleaning will not cause any damage to the equipment structure;

[0057] Pneumatic cleaning eliminates the internal moving parts and transmission parts of the electric dust collector, which can achieve maintenance-free or less maintenance of the equipment system;

[0058] By setting the cleaning air from the air compressor to enter the gas storage tank 45 after passing through the electric heater 47 for heat preservation and storage; when the cathode system 1 of the electric field needs to be cleaned, the control system sends an opening instruction to the pulse valve of this electric field through the PLC controller 14, the third electromagnetic pulse valve 41 is opened instantly to establish the air source channel, the high-pressure hot air source reaches the internal air source pipeline 42 of the electric field from the gas storage tank 45, and reaches the internal and forms an instantaneous strong airflow. The airflow is sprayed from the top to the bottom along the blowhole 22 outside each tubular cathode wire 2 in turn, which can blow away the dust deposited on the discharge end 21 of the cathode wire, thereby achieving the purpose of cleaning. The opening time of the first electromagnetic pulse valve 11, the second electromagnetic pulse valve 12 and the third electromagnetic pulse valve 41 is usually 100-300 milliseconds, so a small amount of high-temperature compressed air can clean all the needle-like lines in an electric field. In this scheme, since the compressed air is dehydrated, dust-free and heated, local condensation corrosion of the electric field caused by low-temperature air is avoided.

[0059] The first temperature meter 43 and the second temperature meter 46 are used for real-time temperature control monitoring and processing of the circuit.

[0060] The first differential force transmitter 13 and the second differential force transmitter 15 are used to measure the pressure difference between the connection circuit and two different points of the air source pipeline 42, and convert the pressure difference into an electrical signal output.

[0061] The PLC controller 14 is used to control the first electromagnetic pulse valve 11, the second electromagnetic pulse valve 12, the first differential force transmitter 13, the second differential force transmitter 15, the cathode wire discharge end 21, the third electromagnetic pulse valve 41, the air source pipeline 42, the first temperature meter 43, the differential pressure transmitter 44, the second temperature meter 46 and the electric heater 47 to run, realizing the unified management of the electric power equipment.

[0062] The electric dust collector roof insulation layer 5 is used for keeping the temperature inside the electric dust collector stable, preventing the negative influence of too low temperature on the working efficiency of the electric dust collector and the normal operation of the equipment.

[0063] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technology content to equivalent embodiments applied to other fields. However, any simple modification, equivalent change and modification of the above embodiments made according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A kind of pneumatic pulse jet dust cleaning cathode system, comprising electric dust collector shell (3), characterized in that, The inside of the electric dust collector shell (3) is provided with three groups of cathode tube systems (1), the bottom of the cathode tube system (1) is provided with a plurality of equidistantly distributed tubular cathode wires (2), and the upper portion of the cathode tube system (1) is provided with an insulation device (4); The outer side of the insulation device (4) is provided with a gas source pipeline (42), the gas source pipeline (42) is divided into three groups and is respectively marked as a first gas source line, a second gas source line and a third gas source line, one end of the first gas source line is provided with an air compressor inlet (48), the outer side of the first gas source line and on one side of the air compressor inlet (48) is provided with an electric heater (47), one side of the electric heater (47) is provided with a gas storage tank (45), and the side of the gas storage tank (45) away from the electric heater (47) is provided with a differential pressure transmitter (44); One end of the second gas source line is provided with a PLC controller (14), and the outer side of the second gas source line is provided with a first electromagnetic pulse valve (11); One end of the third gas source line is provided with a connecting circuit, and the other end of the connecting circuit is connected with the gas source pipeline (42) and penetrates another gas source pipeline (42); The outer side of the tubular cathode wire (2) is provided with a plurality of equidistantly distributed cathode wire discharge ends (21), and the outer side of the cathode wire discharge end (21) is provided with a plurality of equidistantly distributed jet holes (22).

2. The pneumatic pulse jet dedusting cathode system according to claim 1, characterized in that: The outer side of the gas source pipeline (42) and between the electric heater (47) and the gas storage tank (45) is provided with a second temperature meter (46), and the second temperature meter (46) is used for real-time temperature control monitoring processing of circuit change.

3. The pneumatic pulse jet dedusting cathode system according to claim 1, characterized in that: The outer side of one end of the gas source pipeline (42) close to the insulation device (4) is provided with a third electromagnetic pulse valve (41), and the outer side of the gas source pipeline (42) and between the third electromagnetic pulse valve (41) and the differential pressure transmitter (44) is provided with a first temperature meter (43), and the first temperature meter (43) is used for real-time temperature control monitoring processing of circuit change.

4. The pneumatic pulse jet dedusting cathode system according to claim 3, characterized in that: The inner wall of the electric dust collector shell (3) is provided with an electric dust collector roof insulation layer (5), and the electric dust collector roof insulation layer (5) is used for keeping the stability of the internal temperature of the electric dust collector.

5. The pneumatic pulse jet dedusting cathode system according to claim 4, characterized in that: The outer side of the third gas source line is provided with a second electromagnetic pulse valve (12), and the first differential pressure transmitter (13) is arranged between the third gas source line and the connecting circuit, and the first differential pressure transmitter (13) is used for measuring the pressure difference between different points of the connecting circuit to the gas source pipeline (42).

6. The pneumatic pulse jet dedusting cathode system according to claim 5, characterized in that: The outer side of the connecting circuit is provided with a second differential pressure transmitter (15), and the second differential pressure transmitter (15) is used for measuring the pressure difference between different points of the connecting circuit to two gas source pipelines (42).

7. The pneumatic pulse jet dedusting cathode system according to claim 6, characterized in that: The first electromagnetic pulse valve (11), the second electromagnetic pulse valve (12), the first differential force transmitter (13), the second differential force transmitter (15), the cathode line discharge end (21), the third electromagnetic pulse valve (41), the gas source pipeline (42), the first temperature meter (43), the differential pressure transmitter (44), the second temperature meter (46) and the electric heater (47) are electrically connected with the PLC controller (14).

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