Intelligent flushing system and flushing method for electric demisting of copper smelting flue gas acid purification

Abstract

The present application relates to the technical field of electric field washing, and particularly relates to an intelligent electric demisting washing system for copper smelting flue gas acid purification and a washing method. The system comprises a device remote control switch, a control system, and a remote control module, a state monitoring module and an information acquisition module are arranged in the control system, the device remote control switch is installed on the electric demisting washing device, and is used for remotely starting or stopping the electric demisting washing device; the control system is preset in a computer, the computer is electrically connected with the device remote control switch, and the remote control module, the state monitoring module and the information acquisition module are all electrically connected with the control system; the remote control module sequentially starts and stops the device remote control switch according to information provided by the state monitoring module and the information acquisition module, and controls the electric demisting washing device to wash the electric field. The system can not only remotely wash the electric field instead of manpower, but also improves the automation function of the system, liberates manpower and improves production efficiency.

Description

Technical Field

[0001] This invention relates to the field of electric field flushing technology, and in particular to an intelligent electric demisting flushing system and flushing method for acid purification of copper smelting flue gas. Background Technology

[0002] Electrostatic precipitators are widely used in the smelting and acid production flue gas industry. The working principle of an electrostatic precipitator is to convert alternating current into direct current through an electrostatic control device and a DC high-voltage generator, which then sends this direct current to the precipitator. A strong electric field is formed between the cathode wire and the anode plate, ionizing air molecules and instantly generating a large number of electrons and positive and negative ions. These electrons and ions move in a directed manner under the influence of the electric field, forming the medium for capturing acid mist.

[0003] In the process of producing acid from smelting flue gas, multiple washing and cooling processes are involved. When the flue gas is passed to subsequent processes or discharged externally, there are often requirements regarding the acid mist index. Therefore, electrostatic precipitators are widely used after various washing equipment. However, due to the complex composition of smelting flue gas, solid impurities entering the electric field acquire electrical charges and adhere to the cathode wires and anode plates. After prolonged operation, the operating efficiency of the electric field decreases, affecting the normal operation of the electrostatic precipitator and significantly reducing the demisting effect, thus impacting subsequent production processes. Therefore, regular flushing of the electric field is necessary. Furthermore, the electric field must be flushed before starting the electrostatic precipitator to keep it moist and prevent sparks from discharge after starting the electric field from igniting the internal structure if it is dry.

[0004] Currently, in the sulfuric acid production process using smelting flue gas, the flue gas typically has multiple channels, each equipped with an electrostatic precipitator. Each electrostatic precipitator has inlet and outlet valves. During production, when flushing the electrostatic field, the inlet and outlet valves of the channel to be flushed must be closed, and then the electrostatic precipitator must be shut down. The spray system is then started, i.e., the spray pump and valves are activated, to flush the electrostatic field. After flushing for a period of time, the flushing system is shut down. After flushing the electrostatic precipitator, the inlet and outlet valves of the electrostatic field are opened.

[0005] In traditional factories, the lack of a unified control solution for electrostatic precipitators, flue gas duct valves, and flushing equipment stems from the diverse suppliers. Often, only individual devices can be operated via PLC control cabinets, or even manually, resulting in significant waste of human resources. Periodic flushing of the electrostatic precipitator is a burden for on-site operators and makes real-time monitoring of its operation impossible. When abnormalities occur, such as overvoltage, undervoltage, or abnormal shutdowns, on-site personnel cannot monitor the situation. Furthermore, periodic flushing of the electrostatic precipitator is inefficient and fails to balance achieving performance targets with energy conservation. Therefore, a solution is urgently needed.

[0006] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide an intelligent electrostatic demisting flushing system and flushing method for acid purification of copper smelting flue gas. This system can not only replace manual labor for remote flushing of the electric field, but also improve the automation function of the system, free up manpower, and improve production efficiency.

[0008] To achieve the aforementioned objective, the technical solution of the present invention is as follows: an intelligent electrostatic precipitator flushing system and flushing method for acid purification of copper smelting flue gas, comprising: a remote control switch for the equipment; the remote control switch is installed on the electrostatic precipitator flushing equipment and is used to remotely turn the electrostatic precipitator flushing equipment on or off.

[0009] Control system; the control system is pre-installed in a computer, the computer is electrically connected to the remote control switch of the equipment, and the control system is equipped with an information acquisition module, a status monitoring module and a remote control module;

[0010] The information acquisition module is used to acquire the current and voltage operating parameters of the electric field to be rinsed; the status monitoring module is used to monitor the status signal of the high-voltage constant current source of the electrostatic precipitator; the remote control module is electrically connected to both the status monitoring module and the information acquisition module, and controls the remote control switch of the equipment to start and stop in sequence according to the information provided by the status monitoring module and the information acquisition module, thereby controlling the electrostatic precipitator to rinse the electric field.

[0011] Preferably, the remote control switches for the equipment include an electric switch for the electrostatic precipitator, an electric switch for the electrostatic precipitator flushing valve, an electric switch for the flushing booster pump, an electric switch for starting and stopping the electric field, an electric field current and voltage regulation control switch, and a high-voltage constant current source control switch for the electrostatic precipitator.

[0012] Preferably, the current and voltage operating parameters include the primary current, primary voltage, secondary current, and secondary voltage of the electric field to be flushed.

[0013] Preferably, the status signals of the high-voltage constant current source of the electrostatic precipitator include ready, self-test, running, stop, overvoltage alarm, undervoltage alarm, and over-temperature alarm.

[0014] Preferably, the remote control module includes an automatic rinsing program; the automatic rinsing program includes a one-button start command input terminal and a remote step-by-step rinsing command input terminal; the one-button start command input terminal is used to remotely control the electrostatic precipitator to automatically rinse the electric field; the remote step-by-step rinsing command input terminal is used by the operator to remotely operate the electrostatic precipitator to rinse the electric field in steps.

[0015] Preferably, the flushing logic of the one-button start command input terminal is as follows: after one-button start, the automatic flushing program controls the electric field current and voltage to gradually decrease to zero. After the information acquisition module detects the signal that the electric field has decreased to zero, the automatic flushing program stops the high-voltage constant current source of the electrostatic precipitator. The information acquisition module collects and compares the operating parameters of the electric field, such as primary current, primary voltage, secondary current, and secondary voltage. After the status monitoring module confirms that the high-voltage constant current source of the electrostatic precipitator has stopped, the automatic flushing program opens the flushing pneumatic valve and then starts the flushing booster pump after a delay. After the set flushing time is reached, the automatic flushing program shuts off the flushing booster pump and closes the flushing pneumatic valve. After the electric field has been drained, the automatic flushing program automatically starts the high-voltage constant current source of the electrostatic precipitator and adjusts the electric field current and voltage to the operating values ​​before flushing, thus completing the intelligent flushing of the electric field.

[0016] Preferably, the control system is a DCS system.

[0017] Preferably, the delayed start time of the flushing booster pump, the electric field flushing time, and the electric field draining time can all be preset in advance.

[0018] Preferably, when the automatic flushing program flushes the electric field, before each step of the operation, the status monitoring module and the information acquisition module transmit the collected information to the automatic flushing program. If any data abnormality occurs, the automatic flushing program immediately stops running and issues an alarm.

[0019] Preferably, the rinsing method is as follows:

[0020] S1. After confirming that the electrostatic precipitator for flue gas acid production purification is ready for flushing, the operator manually operates the computer to manually press the one-button flushing command input terminal on the automatic flushing program to start the intelligent flushing system of the electrostatic precipitator.

[0021] S2. The status monitoring module collects the status signals of the high-voltage constant current source of the electrostatic precipitator, such as "operation, overvoltage alarm, undervoltage alarm, and overtemperature alarm". The automatic flushing program confirms that the operation signal of the high-voltage constant current source of the electrostatic precipitator is normal and there are no overvoltage alarm, undervoltage alarm, or overtemperature alarm signals. The automatic flushing program controls the electric field current and voltage to gradually decrease to zero.

[0022] S3. The information acquisition module collects information on the secondary current and secondary voltage of the electric field and transmits the information to the automatic flushing program. The automatic flushing program compares and confirms that the secondary current is 0mA and the secondary voltage is 0kV. The automatic flushing program then stops the high-voltage constant current source for the electric demisting device.

[0023] S4. The status monitoring module collects the "run, overpressure alarm, underpressure alarm, and overtemperature alarm" status information of the high-voltage constant current source of the electrostatic precipitator again and transmits the information to the automatic flushing program. The automatic flushing program confirms that the "stop" signal of the high-voltage constant current source of the electrostatic precipitator is normal and there are no "overpressure alarm, underpressure alarm, or overtemperature alarm" signals. The automatic flushing program opens the flushing pneumatic valve.

[0024] S5. After a 15-second delay, the automatic flushing program starts the flushing booster pump, flushes the electric mist for 10 minutes, and then the automatic flushing program shuts off the flushing booster pump and the flushing pneumatic valve; waits for 2 minutes for the electric field to drain.

[0025] S6. After the status monitoring module collects and confirms the "ready" signal of the high-voltage constant current source of the electrostatic precipitator, it transmits the information to the automatic flushing program. The automatic flushing program starts the high-voltage constant current source of the electrostatic precipitator. The status monitoring module collects the "self-test, stop" signal of the high-voltage constant current source of the electrostatic precipitator to confirm that the self-test of the high-voltage constant current source of the electrostatic precipitator is completed.

[0026] S7. The electric field current and voltage are gradually increased to the specified level by the automatic control module. The information acquisition module collects the operating parameters of the electric field, namely "primary current, primary voltage, secondary current, and secondary voltage", and transmits the information to the automatic flushing program. The automatic flushing program compares the data to confirm that the electric field is normal, the current and voltage are stable, and the intelligent electro-fogging flushing is completed.

[0027] The beneficial effects of this invention are reflected in:

[0028] (1) By setting up a rinsing system, the present invention can not only remotely rinse the electric field, replacing manual labor and improving rinsing efficiency, but also set up a one-button rinsing function in the rinsing system, making the operation more convenient and efficient.

[0029] (2) In this invention, the remote control module is electrically connected to the status monitoring module and the information acquisition module. Based on the information provided by the status monitoring module and the information acquisition module, the remote control switch of the equipment is turned on and off in sequence to control the electrostatic precipitator flushing equipment to flush the electric field. Through this setting, the entire system can realize a self-test feedback function during flushing, thereby improving the safety of the entire flushing system. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the rinsing process of the present invention;

[0031] Figure 2 This is a schematic diagram of the automatic rinsing program control logic of the present invention. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] See Figure 1 As shown:

[0035] This invention provides an intelligent electrostatic precipitator flushing system and flushing method for acid purification of copper smelting flue gas, comprising:

[0036] Remote control switches for the equipment; These switches are installed on the electrostatic precipitator flushing equipment and are used to remotely turn the equipment on or off. The remote control switches include electric switches for the electrostatic precipitator, electric switches for the electrostatic precipitator flushing valves, electric switches for the flushing booster pump, electric switches for starting and stopping the electric field, electric field current and voltage regulation control switches, and electric precipitator high-voltage constant current source control switches.

[0037] This setup enables remote control of various devices via electric switches and computers, thereby replacing on-site human operation, enhancing the system's automation capabilities, and freeing up manpower.

[0038] Control system; The control system is pre-installed in the background computer in the control room. The computer is electrically connected to the remote control switch of the equipment, so that the computer can remotely operate the remote switch of the equipment.

[0039] In addition, the control system is equipped with an information acquisition module, a status monitoring module, and a remote control module; the remote control module is electrically connected to both the status monitoring module and the information acquisition module.

[0040] The information acquisition module is used to collect the current and voltage operating parameters of the electric field to be flushed. The information acquisition module transmits the collected information to the remote control module. The current and voltage operating parameters of the electric field include the primary current, primary voltage, secondary current, and secondary voltage of the electric field to be flushed.

[0041] The status monitoring module is used to monitor the status signals of the high-voltage constant current source of the electrostatic precipitator. The status monitoring module transmits the collected information to the remote control module. The status signals of the high-voltage constant current source of the electrostatic precipitator include ready, self-test, running, stop, overvoltage alarm, undervoltage alarm, and over-temperature alarm.

[0042] The remote control module starts and stops the remote control switch of the equipment in sequence based on the information provided by the status monitoring module and the information acquisition module, thereby remotely controlling the electrostatic precipitator to rinse the electric field.

[0043] The remote control module is equipped with an automatic flushing program; the automatic flushing program includes a one-button start command input terminal and a remote step-by-step flushing command input terminal.

[0044] The one-button start command input terminal is used to remotely control the electrostatic precipitator flushing equipment to automatically flush the electric field. The flushing time and flushing steps are preset in advance by the operator in the system via computer according to the flushing needs of the production routine. The flushing system can be started by simply pressing the one-button start command input terminal. During the operation of the system, it can also be stopped, paused, or the flushing can be canceled, making the whole system more flexible to use.

[0045] In actual use, under normal circumstances, the logic of the flushing electric field at the one-button start command input terminal is as follows: after one-button start, the automatic flushing program controls the electric field current and voltage to gradually decrease to zero. After the information acquisition module detects the signal that the electric field has decreased to zero, the automatic flushing program stops the high-voltage constant current source of the electrostatic precipitator. The information acquisition module collects and compares the operating parameters of the electric field, such as primary current, primary voltage, secondary current, and secondary voltage. After the status monitoring module confirms that the high-voltage constant current source of the electrostatic precipitator has stopped, the automatic flushing program opens the flushing pneumatic valve and starts the flushing booster pump after a delay. After the set flushing time is reached, the automatic flushing program shuts off the flushing booster pump and closes the flushing pneumatic valve. After the electric field has been drained, the automatic flushing program automatically starts the high-voltage constant current source of the electrostatic precipitator and adjusts the electric field current and voltage to the operating values ​​before flushing, thus completing the intelligent flushing electric field.

[0046] The remote step-by-step flushing command input terminal allows operators to remotely control the electrostatic precipitator flushing equipment to perform step-by-step flushing of the electric field. This enables operators to input parameters that meet production flushing needs via computer into the remote step-by-step flushing command input terminal when production flushing requirements change, thus making the flushing more aligned with actual needs and improving the flushing effect.

[0047] In actual use, the control system is a DCS system with an automatic flushing program.

[0048] The delayed start time of the flushing booster pump, the flushing time of the electric field, and the draining time of the electric field can be preset in the control system via computer.

[0049] Furthermore, the electric fog field is powered by a constant current source, with the rectifier transformer installed outdoors. It uses 95mm ceramic insulators and possesses excellent insulation, anti-pollution, and anti-breakdown properties. The specific current during operation can reach 0.2–0.3 mA / m (0.4 mA / m under no-load). The special connection structure of the counterweight overcomes electrochemical corrosion, thus fundamentally solving the problem of broken electrode wires.

[0050] Example 2

[0051] See Figure 2 As shown:

[0052] To ensure rinsing safety and the overall safety of the rinsing system, a self-checking feedback function is set up. Specifically, during the automatic rinsing process, before each step of the automatic rinsing program, the status monitoring module and the information acquisition module transmit the collected information to the automatic rinsing program. If any data abnormality occurs, the automatic rinsing program will immediately stop running and issue an alarm.

[0053] With the self-test feedback function enabled, the method for flushing the electric field during system operation is as follows:

[0054] S1. After confirming that the electrostatic precipitator for flue gas acid production purification is ready for flushing, the operator manually operates the computer to manually press the one-button flushing command input terminal on the automatic flushing program to start the intelligent flushing system of the electrostatic precipitator.

[0055] S2. The status monitoring module collects the status signals of the high-voltage constant current source of the electrostatic precipitator, such as "operation, overvoltage alarm, undervoltage alarm, and overtemperature alarm". The automatic flushing program confirms that the operation signal of the high-voltage constant current source of the electrostatic precipitator is normal and there are no overvoltage alarm, undervoltage alarm, or overtemperature alarm signals. The automatic flushing program controls the electric field current and voltage to gradually decrease to zero.

[0056] S3. The information acquisition module collects information on the secondary current and secondary voltage of the electric field and transmits the information to the automatic flushing program. The automatic flushing program compares and confirms that the secondary current is 0mA and the secondary voltage is 0kV. The automatic flushing program then stops the high-voltage constant current source for the electric demisting device.

[0057] S4. The status monitoring module collects the "run, overpressure alarm, underpressure alarm, and overtemperature alarm" status information of the high-voltage constant current source of the electrostatic precipitator again and transmits the information to the automatic flushing program. The automatic flushing program confirms that the "stop" signal of the high-voltage constant current source of the electrostatic precipitator is normal and there are no "overpressure alarm, underpressure alarm, or overtemperature alarm" signals. The automatic flushing program opens the flushing pneumatic valve.

[0058] S5. After a 15-second delay, the automatic flushing program starts the flushing booster pump, flushes the electric mist for 10 minutes, and then the automatic flushing program shuts off the flushing booster pump and the flushing pneumatic valve; waits for 2 minutes for the electric field to drain.

[0059] S6. After the status monitoring module collects and confirms the "ready" signal of the high-voltage constant current source of the electrostatic precipitator, it transmits the information to the automatic flushing program. The automatic flushing program starts the high-voltage constant current source of the electrostatic precipitator. The status monitoring module collects the "self-test, stop" signal of the high-voltage constant current source of the electrostatic precipitator to confirm that the self-test of the high-voltage constant current source of the electrostatic precipitator is completed.

[0060] S7. The electric field current and voltage are gradually increased to the specified level by the automatic control module. The information acquisition module collects the operating parameters of the electric field, namely "primary current, primary voltage, secondary current, and secondary voltage", and transmits the information to the automatic flushing program. The automatic flushing program compares the data to confirm that the electric field is normal, the current and voltage are stable, and the intelligent electro-fogging flushing is completed.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent electrostatic demisting flushing system for acid purification of copper smelting flue gas, characterized in that, include: Remote control switch for equipment; The remote control switch of the device is installed on the electrostatic precipitator and is used to remotely turn the electrostatic precipitator and the washing equipment on or off. Control system; The control system is pre-installed in a computer, and the computer is electrically connected to the remote control switch of the equipment. The control system is equipped with an information acquisition module, a status monitoring module, and a remote control module. The information acquisition module is used to acquire the current and voltage operating parameters of the electric field to be rinsed; the status monitoring module is used to monitor the status signal of the high-voltage constant current source of the electrostatic precipitator; the remote control module is electrically connected to both the status monitoring module and the information acquisition module, and controls the remote control switch of the equipment to start and stop in sequence according to the information provided by the status monitoring module and the information acquisition module, thereby controlling the electrostatic precipitator to rinse the electric field. The remote control module is equipped with an automatic flushing program; the automatic flushing program includes a one-button start command input terminal and a remote step-by-step flushing command input terminal; the one-button start command input terminal is used to remotely control the electrostatic precipitator flushing equipment to automatically flush the electric field; the remote step-by-step flushing command input terminal is used by the operator to remotely operate the electrostatic precipitator flushing equipment to flush the electric field in steps. The flushing logic of the one-button start command input terminal is as follows: after one-button start, the automatic flushing program controls the electric field current and voltage to gradually decrease to zero. After the information acquisition module detects the signal that the electric field has decreased to zero, the automatic flushing program stops the high-voltage constant current source of the electrostatic precipitator. The information acquisition module collects and compares the operating parameters of the electric field, such as primary current, primary voltage, secondary current, and secondary voltage. After the status monitoring module confirms that the high-voltage constant current source of the electrostatic precipitator has stopped, the automatic flushing program opens the flushing pneumatic valve and then starts the flushing booster pump after a delay. After the set flushing time is reached, the automatic flushing program shuts off the flushing booster pump and closes the flushing pneumatic valve. After the electric field has been drained, the automatic flushing program automatically starts the high-voltage constant current source of the electrostatic precipitator and adjusts the electric field current and voltage to the operating values ​​before flushing, thus completing the intelligent flushing of the electric field. When the automatic flushing program flushes the electric field, before each step of the operation, the status monitoring module and the information acquisition module transmit the collected information to the automatic flushing program. If any data abnormality occurs, the automatic flushing program immediately stops running and issues an alarm.

2. The intelligent electrostatic precipitator flushing system for acid purification of copper smelting flue gas according to claim 1, characterized in that, The remote control switches for the equipment include an electric switch for the electrostatic precipitator, an electric switch for the electrostatic precipitator flushing valve, an electric switch for the flushing booster pump, an electric switch for starting and stopping the electric field, an electric field current and voltage regulation control switch, and a high-voltage constant current source control switch for the electrostatic precipitator.

3. The intelligent electrostatic precipitator flushing system for acid purification of copper smelting flue gas according to claim 2, characterized in that, The current and voltage operating parameters include the primary current, primary voltage, secondary current, and secondary voltage of the electric field to be flushed.

4. The intelligent electrostatic precipitator flushing system for acid purification of copper smelting flue gas according to claim 3, characterized in that, The status signals of the high-voltage constant current source of the electrostatic precipitator include ready, self-test, running, stop, overvoltage alarm, undervoltage alarm, and over-temperature alarm.

5. The intelligent electrostatic precipitator flushing system for acid purification of copper smelting flue gas according to claim 4, characterized in that, The control system is a DCS system.

6. The intelligent electrostatic precipitator flushing system for acid purification of copper smelting flue gas according to claim 5, characterized in that, The delayed start time of the flushing booster pump, the electric field flushing time, and the electric field draining time can all be preset in advance.

7. The flushing method of the intelligent electrostatic precipitator flushing system for acid purification of copper smelting flue gas according to any one of claims 1-6, characterized in that, The rinsing method is as follows: S1. After confirming that the electrostatic precipitator for flue gas acid production purification is ready for rinsing, the operator manually operates the computer and manually presses the one-button rinsing command input on the automatic rinsing program to start the intelligent rinsing system of the electrostatic precipitator. S2. The status monitoring module collects the status signals of the high-voltage constant current source of the electrostatic precipitator, such as "operation, overvoltage alarm, undervoltage alarm, and overtemperature alarm". The automatic flushing program confirms that the operation signal of the high-voltage constant current source of the electrostatic precipitator is normal and there are no overvoltage alarm, undervoltage alarm, or overtemperature alarm signals. The automatic flushing program controls the electric field current and voltage to gradually decrease to zero. S3. The information acquisition module collects information on the secondary current and secondary voltage of the electric field and transmits the information to the automatic flushing program. The automatic flushing program compares and confirms that the secondary current is 0 mA and the secondary voltage is 0 kV. The automatic flushing program then stops the high-voltage constant current source for the electric demisting device. In actual use, considering the special electric field environment, the allowable deviation of the secondary current is 10 mA and the allowable deviation of the secondary voltage is 1 kV. S4. The status monitoring module collects the "run, overpressure alarm, underpressure alarm, and overtemperature alarm" status information of the high-voltage constant current source of the electrostatic precipitator again and transmits the information to the automatic flushing program. The automatic flushing program confirms that the "stop" signal of the high-voltage constant current source of the electrostatic precipitator is normal and there are no "overpressure alarm, underpressure alarm, or overtemperature alarm" signals. The automatic flushing program then opens the flushing pneumatic valve. S5. After a 15-second delay, the automatic flushing program starts the flushing booster pump and flushes for 10 minutes. The automatic flushing program then shuts off the flushing booster pump and the flushing pneumatic valve. The electric field waits for 2 minutes for water to drain. S6. After the status monitoring module collects and confirms the "ready" signal of the high-voltage constant current source of the electrostatic precipitator, it transmits the information to the automatic flushing program. The automatic flushing program starts the high-voltage constant current source of the electrostatic precipitator. The status monitoring module collects the "self-test, stop" signal of the high-voltage constant current source of the electrostatic precipitator to confirm that the self-test of the high-voltage constant current source of the electrostatic precipitator is completed. S7. The electric field current and voltage are automatically controlled to gradually increase to the specified level. The information acquisition module collects the operating parameters of the electric field, namely "primary current, primary voltage, secondary current, and secondary voltage", and transmits the information to the automatic flushing program. The automatic flushing program compares the data to confirm that the electric field is normal, the current and voltage are stable, and the intelligent electro-fogging flushing is completed.

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