Electrostatic dust collection device with automatic operation control function

Abstract

The utility model relates to the technical field of electric dust collection, and particularly discloses an automatic operation control electrostatic dust collection device which comprises a wet type electrostatic dust collector, a dust collector insulation box and a high-voltage electric field power supply device, and the high-voltage electric field power supply device is electrically connected with the wet type electrostatic dust collector through the dust collector insulation box; an air inlet pipeline is arranged on the lower portion of the side wall of the wet-type electrostatic dust collector, a washing water pipeline is arranged on the upper portion of the side wall, an air outlet pipeline is arranged on the top of the side wall, and a sewage discharge pipeline is arranged at the bottom of the wet-type electrostatic dust collector. The electrostatic dust collection device disclosed by the utility model is high in automation degree, can circularly and automatically run, does not need manual operation, and reduces the labor intensity of operators.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic precipitation, and particularly relates to an electrostatic precipitator with automatic operation control. Background Art

[0002] In the dust removal and purification of lime kiln gas in the soda ash production process by the ammonia-soda method, the combination of a cyclone separator + a foam scrubber + a wet electrostatic precipitator is mostly used to complete the process, and the wet electrostatic precipitator is a crucial link in this process. A complete set of wet electrostatic precipitation process for kiln gas includes a wet electrostatic precipitator, an intake pipe, an outlet pipe, a flushing water pipe, a dust collector insulation box, a high-voltage electric field power supply device, etc.

[0003] The operation method of the traditional wet electrostatic precipitator is as follows: when the wet electrostatic precipitator runs to a predetermined time, first, the operator closes the kiln gas intake valve, then the on-duty electrician cuts off the power supply of the high-voltage electric field power supply device, and then the operator opens the flushing water valve to flush the soot captured in the wet electrostatic precipitator; after the flushing is completed, the operator closes the flushing water valve, and after confirming that there is no water in the electrostatic precipitator, the on-duty electrician powers on the high-voltage electric field power supply device, and finally the operator opens the kiln gas intake valve to resume the operation of the electric precipitator. When the next predetermined time arrives, the above operation process is repeated. The above operations are relatively easy to complete when the number of electrostatic precipitators is small, and will not involve too much energy of the operator. However, when the number of electrostatic precipitators exceeds 3 or more, it will involve too much energy of the operator, and the labor intensity is high, and it is easy to have misoperations, resulting in process fluctuations and damage to the wet electrostatic precipitator.

[0004] Later, with the development of automatic control technology, the monitoring, measurement and control of the operating parameters of the wet electrostatic precipitator were also increased, but the operator still needed to operate frequently. Therefore, the utility model proposes an automatic operation control device for the wet electrostatic precipitator to solve the above technical problems. Summary of the Utility Model

[0005] The utility model provides an electrostatic precipitator with high automatic operation control to solve the problems of low automation degree and frequent operation by operators of the wet classical precipitator.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An electrostatic precipitator with automatic operation control includes a wet electrostatic precipitator, a precipitator insulating box, and a high-voltage electric field power supply device. The high-voltage electric field power supply device is electrically connected to the wet electrostatic precipitator through the precipitator insulating box. The lower part of the side wall of the wet electrostatic precipitator is provided with an intake pipe, the upper part of the side wall of the wet electrostatic precipitator is provided with a flushing water pipe, the top of the wet electrostatic precipitator is provided with an outlet pipe, and the bottom of the wet electrostatic precipitator is provided with a sewage discharge pipe. Its structural feature is that the electrostatic precipitator also includes a control unit, a measuring unit for detecting the fluid in the pipeline, and an execution unit for controlling the on / off of the intake pipe, the flushing water pipe, and the high-voltage electric field power supply device. The control unit includes a controller, an input end, and an output end. The input end is electrically connected to the measuring unit, and the output end is electrically connected to the execution unit.

[0008] The execution unit includes a first on-off valve, a second on-off valve, and an automatic switching module. The first on-off valve is arranged on the intake pipe, the second on-off valve is arranged on the flushing water pipe, and the automatic switching module is arranged inside the high-voltage electric field power supply device.

[0009] The measuring unit includes a first pressure transmitter, a dust meter, a second pressure transmitter, an electromagnetic flowmeter, a first tuning fork switch, and a second tuning fork switch. The first pressure transmitter is arranged on the intake pipe, the dust meter is arranged on the outlet pipe, the second pressure transmitter is arranged on the flushing water pipe, the electromagnetic flowmeter is arranged on the flushing water pipe, the first tuning fork switch is arranged on the flushing water pipe, and the second tuning fork switch is arranged on the sewage discharge pipe. The signals output by the first tuning fork switch and the second tuning fork switch are digital signals (i.e., 1, 0). When there is water in the pipeline, 1 is output, and when there is no water in the pipeline, 0 is output.

[0010] The first tuning fork switch is arranged between the second on-off valve and the wet electrostatic precipitator.

[0011] A clock counter is also arranged in the control unit.

[0012] The first on-off valve and the second on-off valve are pneumatic on-off valves.

[0013] Compared with the prior art, the present utility model has the following beneficial effects;

[0014] (1) The present utility model uses the clock counter arranged in the control unit to record the energized operation time and de-energized flushing time of the wet electrostatic precipitator, making its energized operation time and de-energized flushing time more accurate, reducing the number of process fluctuations, extending the service life, and reducing the operation cost;

[0015] (2) The utility model links independent measurement parameters and control signals through an automatic operation control program written inside the control unit, realizing automatic timing of the wet electrostatic precipitator cycle, automatic stopping of air supply, automatic stopping of power supply, and automatic flushing, without manual operation, greatly reducing the labor intensity of operators.

[0016] (3) The utility model has a high degree of automation, reduces the frequency of duty electricians contacting the high-voltage electric field, and reduces the probability of electric shock to personnel. Brief Description of the Drawings

[0017] Figure 1 is a schematic flow diagram with control points of the utility model;

[0018] Figure 2 is a schematic control logic diagram of the utility model;

[0019] Figure 1 In the figure: 1. Wet electrostatic precipitator; 2. Intake pipeline; 3. Exhaust pipeline; 4. Flushing water pipeline; 5. Sewage discharge pipeline; 6. Dust collector insulation box; 7. High-voltage electric field power supply device; 8. First pressure transmitter; 9. First on-off valve; 10. Dust meter; 11. Second pressure transmitter; 12. Electromagnetic flowmeter; 13. Second on-off valve; 14. First tuning fork switch; 15. Second tuning fork switch. Detailed Embodiment

[0020] To make the purpose, advantages and features of the utility model clearer, the following further details the utility model with reference to the drawings and specific embodiments. It should be noted that the drawings are in a very simplified form and not drawn to scale, only for conveniently and clearly assisting in explaining the purpose of the embodiments of the utility model.

[0021] Referring to Figure 1 , an electrostatic dust removal device with automatic operation control of the utility model includes a wet electrostatic precipitator 1 and a high-voltage electric field power supply device 7. An intake pipeline 2 for kiln gas to enter and an exhaust pipeline 3 for the kiln gas after dust removal are provided on the wet electrostatic precipitator 1. A flushing water pipeline 4 for flushing water to enter and a sewage discharge pipeline 5 for discharging flushing sewage are also provided on the wet electrostatic precipitator 1. The device further includes a control unit, a measurement unit for detecting the fluid in the pipeline, and an execution unit for controlling the on-off of the intake pipeline 2, the flushing water pipeline 4, and the high-voltage electric field power supply device 7. The high-voltage electric field power supply device 7 is electrically connected to the wet electrostatic precipitator 1 through the dust collector insulation box 6, and the dust collector insulation box 6 can prevent the occurrence of electric leakage accidents, which is a conventional means in the art; such as Figure 1As shown in the figure, the intake pipe 2 is connected to the lower part of the side wall of the wet electrostatic precipitator 1, the outlet pipe 3 is connected to the top of the wet electrostatic precipitator 1, the flushing water pipe 4 is connected to the upper part of the side wall of the wet electrostatic precipitator 1, the sewage discharge pipe 5 is connected to the bottom of the wet electrostatic precipitator 1, and the water outlet of the sewage discharge pipe 5 is arranged in the gutter; the control unit includes a controller, an input end and an output end. The input end is electrically connected to the measuring unit, and the output end is electrically connected to the execution unit.

[0022] Referring to Figure 1 , the execution unit includes a first on-off valve 9, a second on-off valve 13 and an automatic switching-on and switching-off module. As Figure 1 shown, the first on-off valve 9 is arranged on the intake pipe 2, the second on-off valve 13 is arranged on the flushing water pipe 4, and the automatic switching-on and switching-off module is arranged in the high-voltage electric field power supply device 7 (not shown in the figure). The automatic switching-on and switching-off module controls the on-off of the circuit. Specifically, the first on-off valve 9 and the second on-off valve 13 adopt pneumatic on-off valves; the measuring unit includes a first pressure transmitter 8, a dust meter 10, a second pressure transmitter 11, an electromagnetic flowmeter 12, a first tuning fork switch 14 and a second tuning fork switch 15. Specifically, the first pressure transmitter 8 is arranged on the intake pipe 2, the dust meter 10 is arranged on the outlet pipe 3, the second pressure transmitter 11 is arranged on the flushing water pipe 4, the electromagnetic flowmeter 12 is arranged on the flushing water pipe 4, the first tuning fork switch 14 is arranged on the flushing water pipe 4, and the first tuning fork switch 14 is located between the second on-off valve 13 and the wet electrostatic precipitator 1. The second tuning fork switch 15 is arranged on the sewage discharge pipe 5. The signals output by the first tuning fork switch 14 and the second tuning fork switch 15 are digital signals (i.e., 1, 0). When there is water in the pipeline, 1 is output externally, and when there is no water in the pipeline, 0 is output externally. The pressure transmitter is used to detect the fluid pressure in the pipeline, the dust meter 10 is used to detect the dust concentration in the kiln gas discharged from the wet electrostatic precipitator 1, and the tuning fork switch can detect whether there is liquid flow in the pipeline; a clock timer (not shown in the figure) is arranged in the control unit. The clock timer records the power-on operation time and the power-off flushing time of the wet electrostatic precipitator 1, making the power-on operation time and the power-off flushing time of the wet electrostatic precipitator 1 more accurate.

[0023] Combined with Figure 1 and Figure 2 shown, to accurately operate an electrostatic dust removal device with automatic operation control of the present utility model, the control unit defines the states of the electrostatic dust removal device as three types, namely: 1. Wait Start T (waiting to start); 2. Start (starting); 3. Pause (pausing). The automatic operation control process is as follows:

[0024] Step 1: Detect the status of the electrostatic precipitator: 1. Wait Start: In the waiting state, cannot run; 2. Start: Can run; 3. pause: In the paused state, cannot run;

[0025] Step 2: Confirm the status of the electrostatic precipitator: In the "Start: Can run" state;

[0026] Step 3: Open T: Turn on the electrostatic precipitator (send a signal to turn on the electrostatic precipitator to the high-voltage electric field power supply device, and supply power);

[0027] Step 4: Open HV202-2 (No. 1 switching valve): Open the inlet switching valve for kiln gas;

[0028] Step 5: Wait for 4 hours: The electrostatic precipitator runs for 4 hours (the running time can be adjusted according to the actual working conditions);

[0029] Step 6: 4 hours over: The 4-hour running time is up, waiting to stop the electrostatic precipitator;

[0030] Step 7: Close HV-202-2 (No. 1 switching valve): Close the inlet switching valve for kiln gas;

[0031] Step 8: Stop T: Stop the electrostatic precipitator (send a signal to stop the electrostatic precipitator to the high-voltage electric field power supply device, and cut off the power);

[0032] Step 9: Open HV202-1 (No. 2 switching valve): Open the flushing water switching valve;

[0033] Step 10: Wait for 5Min: Flush for 5 minutes (the flushing time can be adjusted according to the actual working conditions);

[0034] Step 11: 5Min over: The 5-minute flushing time is up;

[0035] Step 12: Close HV202-1 (No. 2 switching valve): Close the flushing water switching valve;

[0036] Step 13: Confirm whether there is water in the electrostatic precipitator: 1. If there is no water, return to the first step and repeat the above process; 2. If there is water, continue to wait until a signal indicating no water is sent, then return to the first step and repeat the above process. For the specific control logic, refer to Figure 2 as shown.

[0037] The electrostatic dust removal device of the utility model links measurement parameters with control signals by writing an automatic operation program inside the control unit, realizing automatic timing, automatic stopping of air supply, automatic stopping of power supply, and automatic flushing of the wet electrostatic precipitator. It requires no manual operation, reduces the labor intensity of operators, and does not cause operation errors. A clock counter is installed inside the control unit, which records the power-on operation time and power-off flushing time of the wet electrostatic precipitator. The timing is more accurate, reducing the number of fluctuations in the dust removal process, extending the service life of the equipment, and reducing the operation cost. With a high degree of automation, the chance of electric shock to operators is reduced.

[0038] The present invention is not limited by the above embodiments. For those skilled in the art, other embodiments obtained without creative efforts fall within the protection scope of the present invention.

Claims

1. An electrostatic precipitator with automatic operation control, comprising a wet electrostatic precipitator (1), a precipitator insulating box (6), and a high-voltage electric field power supply device (7). The high-voltage electric field power supply device (7) is electrically connected to the wet electrostatic precipitator (1) through the precipitator insulating box (6). An intake pipe (2) is provided at the lower part of the side wall of the wet electrostatic precipitator (1), a flushing water pipe (4) is provided at the upper part of the side wall of the wet electrostatic precipitator (1), an outlet pipe (3) is provided at the top of the wet electrostatic precipitator (1), and a sewage discharge pipe (5) is provided at the bottom of the wet electrostatic precipitator (1), characterized in that, The electrostatic dust removal device further includes a control unit, a measurement unit for detecting the fluid in the pipeline, and an execution unit for controlling the on / off of the intake pipeline (2), the flushing water pipeline (4), and the high-voltage electric field power supply device (7); the control unit includes a controller, an input end, and an output end, the input end is electrically connected to the measurement unit, and the output end is electrically connected to the execution unit.

2. The electrostatic precipitator device with automatic operation control according to claim 1, characterized in that, The execution unit includes a first switching valve (9), a second switching valve (13), and an automatic switching-on and switching-off module. The first switching valve (9) is arranged on the intake pipeline (2), the second switching valve (13) is arranged on the flushing water pipeline (4), and the automatic switching-on and switching-off module is arranged inside the high-voltage electric field power supply device (7).

3. The electrostatic dust removal device with automatic operation control according to claim 2, wherein The measurement unit includes a first pressure transmitter (8), a dust meter (10), a second pressure transmitter (11), an electromagnetic flowmeter (12), a first tuning fork switch (14), and a second tuning fork switch (15); the first pressure transmitter (8) is arranged on the intake pipeline (2), the dust meter (10) is arranged on the outlet pipeline (3), the second pressure transmitter (11) is arranged on the flushing water pipeline (4), the electromagnetic flowmeter (12) is arranged on the flushing water pipeline (4), the first tuning fork switch (14) is arranged on the flushing water pipeline (4), and the second tuning fork switch (15) is arranged on the sewage discharge pipeline (5).

4. The electrostatic dust removal device with automatic operation control according to claim 3, characterized in that, The first tuning fork switch (14) is arranged between the second switching valve (13) and the wet electrostatic precipitator (1).

5. The electrostatic dust removal device with automatic operation control according to claim 4, characterized in that, A clock counter is also arranged inside the control unit.

6. The electrostatic dust removal device with automatic operation control according to claim 5, characterized in that, The first switching valve (9) and the second switching valve (13) are pneumatic switching valves.

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