A method and device for controlling the operation of a zinc slag self-cleaning sensor based on cyclic flushing trenches.

Abstract

The application provides a zinc residue self-cleaning induction body operation control method and device based on circulating gully, relates to the technical field of industrial furnace, and the method comprises the following steps: step 1, the temperature of zinc liquid in the zinc pot is monitored in real time through a temperature sensor, and a temperature signal is transmitted to a temperature control instrument; step 2, the temperature control instrument processes the temperature signal according to a set threshold value, and outputs a high-temperature or low-temperature signal to a programmable logic controller; step 3, the programmable logic controller controls the contactor group to switch the output voltage of the autotransformer based on the temperature signal, so that the induction body operates in a low-power, medium-power or high-power mode. Through real-time temperature control, automatic power adjustment and circulating gully, the application improves the flowability and heating efficiency of the zinc liquid, reduces zinc residue blockage and manual cleaning, prolongs the service life of the induction body and stabilizes the product quality.

Description

Technical Field

[0001] This invention relates to the field of industrial furnace technology, and in particular to a method and device for controlling the operation of a zinc slag self-cleaning inductor based on circulating flushing. Background Technology

[0002] There are certain drawbacks in the practical application of continuous hot-dip galvanizing induction heating technology. During the continuous hot-dip galvanizing process, the accumulation of zinc dross can easily affect the galvanizing effect and product quality.

[0003] Specifically, the temperature of the zinc pot is controlled by a temperature controller to adjust the heating power of the induction element. However, the high-power operation time is often limited, resulting in a relatively fixed flow rate of the molten zinc within the solution channel. When zinc slag generated inside the zinc pot flows into the solution channel with the molten zinc, the induction element's ability to remove the slag is limited. This slag may gradually accumulate and clog the solution channel, potentially leading to a decrease in the induction element's current and a shorter lifespan. The flow rate of the molten zinc may also slow down, ultimately negatively impacting the heating efficiency and production efficiency of the zinc pot.

[0004] In addition, zinc slag adheres tightly and has high hardness in the solution channel. When using conventional physical cleaning methods, the cleaning efficiency may be low, and it may also damage the sensor or cleaning tools, increasing maintenance costs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a method and device for controlling the operation of a zinc slag self-cleaning inductor based on a circulating ditch, which improves the fluidity of the zinc liquid in the inductor and reduces zinc slag blockage.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0007] In a first aspect, a method for controlling the operation of a zinc slag self-cleaning sensor based on cyclic flushing is provided, the method comprising:

[0008] Step 1: Monitor the temperature of the molten zinc in the zinc pot in real time using a temperature sensor and transmit the temperature signal to the temperature control instrument.

[0009] Step 2: The temperature controller processes the temperature signal according to the set threshold and outputs a high temperature or low temperature signal to the programmable logic controller.

[0010] Step 3: Based on the temperature signal, the programmable logic controller controls the contactor group to switch the output voltage of the autotransformer, so that the inductor can operate in low power, medium power or high power mode.

[0011] Step 4: Send a trenching start command to the programmable logic controller via the touch screen to immediately cut off the control logic of the temperature control mode;

[0012] Step 5: The programmable logic controller sequentially triggers the high-power contactors of each sensor in a preset order, each time making a single sensor run at high power for a preset time, while the remaining sensors synchronously switch to low-power operation.

[0013] Step 6: Using the strong electromagnetic force generated by the inductor during high-power operation, the zinc liquid is driven to flush the inner wall of the solution channel at high speed, peeling off and discharging the deposited zinc dross. After the cyclic flushing operation of all inductors is completed, the programmable logic controller automatically switches back to the temperature control mode and re-enters the cycle of temperature monitoring and power adjustment.

[0014] Furthermore, the temperature controller processes the temperature signal according to a set threshold and outputs a high-temperature or low-temperature signal to the programmable logic controller, including:

[0015] The temperature control instrument receives real-time zinc liquid temperature data from the temperature sensor;

[0016] When the temperature of the zinc liquid is lower than the preset threshold, a low temperature signal is output to the second intermediate relay, and a low temperature command is sent to the programmable logic controller through the normally open contact of the second intermediate relay.

[0017] When the temperature of the zinc liquid exceeds the set upper limit, a high temperature signal is output to the first intermediate relay, and a high temperature command is sent to the programmable logic controller through the normally open contact of the first intermediate relay.

[0018] Furthermore, based on the temperature signal, the programmable logic controller controls the contactor group to switch the output voltage of the autotransformer, enabling the inductor to operate in low-power, medium-power, or high-power modes, including:

[0019] When a low-temperature command is received, the sixth contactor coil is triggered. The normally open contact of the sixth contactor closes, triggering the third contactor coil. The main contacts of the third contactor connect the low-power setting of the autotransformer, causing the inductor to operate at 20KW.

[0020] When a high-temperature command is received, the fourth contactor coil is triggered. The normally open contact of the fourth contactor closes, triggering the first contactor coil. The main contacts of the first contactor connect the high-power setting of the autotransformer, causing the inductor to run at 400KW.

[0021] When there is no high or low temperature command, the fifth contactor coil is triggered. The normally open contact of the fifth contactor closes, triggering the second contactor coil. The main contacts of the second contactor connect the medium power range of the autotransformer, so that the inductor runs at 160KW.

[0022] The first, second, and third contactors are prevented from being turned on simultaneously by an interlocking circuit.

[0023] Furthermore, the low power level is 120V, the high power level is 500V, and the medium power level is 200V.

[0024] Furthermore, a trenching start command is sent to the programmable logic controller via the touchscreen to immediately cut off the control logic of the temperature control mode, including:

[0025] The touch screen generates a pulse-type start signal and transmits it to the input port of the programmable logic controller. The programmable logic controller disconnects the coil control circuits of the fourth, fifth, and sixth contactors and blocks the output signal from the temperature control instrument to the first and second intermediate relays.

[0026] Furthermore, the programmable logic controller sequentially triggers the high-power contactors of each sensor in a preset order, causing each sensor to operate at high power for a preset duration each time, while the remaining sensors synchronously switch to low-power operation, including:

[0027] Upon receiving the trenching start command, immediately disconnect the outputs of the fourth, fifth, and sixth contactors in temperature control mode;

[0028] Select the first sensor, trigger the fourth contactor coil corresponding to the first sensor. The normally open contact of the fourth contactor closes, triggering the first contactor coil, so that the first sensor is connected to the 500V high power level. At the same time, force the remaining sensors to trigger the sixth contactor coil. The normally open contact of the sixth contactor closes, triggering the third contactor coil, so that the remaining sensors are connected to the 120V low power level.

[0029] Furthermore, the strong electromagnetic force generated by the inductor during high-power operation drives the molten zinc to rapidly flush the inner wall of the solution channel, stripping and discharging the deposited zinc dross. After completing the cyclic flushing operation of all inductors, the programmable logic controller automatically switches back to temperature control mode, re-entering the temperature monitoring and power regulation cycle, including:

[0030] When operating at high power, the inductor generates a strong alternating electromagnetic field in the solution channel, which acts on the zinc liquid to generate a directional Lorentz force, driving the zinc liquid to scour the inner wall of the solution channel at high speed and mechanically peel off the attached zinc dross; the peeled zinc dross is discharged with the zinc liquid to the main deposition area of ​​the zinc pot.

[0031] After all sensors have completed the cyclic flushing, the programmable logic controller disconnects the output of all fourth contactors; restores the temperature control logic control authority of the fourth, fifth, and sixth contactors; and reactivates the closed-loop temperature regulation link of the temperature sensor, temperature controller, and programmable logic controller.

[0032] Secondly, a self-cleaning sensor operation control device for zinc slag based on cyclic scouring includes:

[0033] The main circuit module is used to construct a three-phase three-wire circuit, including a molded case circuit breaker connected to the three-phase power input terminal, an autotransformer connected to the molded case circuit breaker through the input terminal and providing three adjustable voltages at the output terminal, and at least two inductors connected in parallel to the output terminal of the autotransformer, with the molten groove of each inductor connected to the main body of the zinc pot.

[0034] The signal acquisition module is used to monitor and transmit temperature signals in real time, including a temperature sensor immersed in the zinc pot body to monitor the temperature of the zinc liquid, and a temperature control instrument receiving the temperature sensor signal and outputting a high temperature or low temperature signal.

[0035] The logic control module is used to process control signals and perform logic operations, including a programmable logic controller receiving high temperature or low temperature commands from the temperature controller; responding to the pulse start signal from the touch screen; and a first intermediate relay and a second intermediate relay, which respectively transmit the high temperature and low temperature commands from the temperature controller to the programmable logic controller.

[0036] The power switching module is used to realize the power regulation of the inductor. It includes a programmable logic controller that controls the contactor group to switch the output voltage of the autotransformer based on temperature commands, so that the inductor can operate in low power, medium power or high power mode.

[0037] The interlock protection module is used to mutually exclude the conduction of the coil power supply circuits of the first contactor, the second contactor, and the third contactor.

[0038] The human-machine interaction module is used to realize human-machine signal interaction, including a touch screen that communicates with the programmable logic controller and generates pulse start signals to activate the trenching module.

[0039] Thirdly, a computing device includes:

[0040] One or more processors;

[0041] A storage device for storing one or more programs that, when executed by one or more processors, cause the one or more processors to implement the method.

[0042] Fourthly, a computer-readable storage medium storing a program that, when executed by a processor, implements the method.

[0043] The above-described solution of the present invention has at least the following beneficial effects:

[0044] Through real-time temperature monitoring and threshold analysis, combined with a multi-level automatic power adjustment mechanism, the temperature uniformity of the zinc bath is precisely maintained, effectively ensuring the stable and reliable quality of the galvanized layer. Based on high-power directional flushing technology, a strong electromagnetic field drives the zinc bath to form a high-speed flow, thoroughly stripping and removing impurities deposited on the inner wall of the solution channel, improving the fluidity of the zinc bath and fundamentally avoiding the risk of blockage. The substantial reduction in zinc dross deposition significantly reduces sensor wear, while avoiding damage to the equipment caused by traditional physical cleaning, achieving a leap forward in the service life of core components. The periodic automatic cleaning mechanism reduces manual maintenance time and frequency, driving structural optimization of operation and maintenance costs. During the flushing process, multi-sensor collaborative temperature control technology ensures a continuous and stable zinc pot temperature, avoiding production interruptions and achieving a qualitative breakthrough in overall operating efficiency.

[0045] A dynamic coordination strategy of high power output at a single point and low power output globally restructures the energy consumption distribution structure, achieving fundamental optimization of power utilization efficiency. The central control system automatically completes mode switching and operation sequences, minimizing human intervention errors and improving system reliability and process consistency. Attached Figure Description

[0046] Figure 1 This is a schematic flowchart of an operation control method for a zinc slag self-cleaning sensor based on cyclic scouring provided by an embodiment of the present invention.

[0047] Figure 2 This is a diagram showing the main circuit topology and power control structure of a zinc slag self-cleaning sensor operation control device based on cyclic scouring, provided by an embodiment of the present invention.

[0048] Figure 3 This is a temperature control mode signal transmission and logic control diagram of a zinc slag self-cleaning sensor operation control device based on cyclic scouring provided by an embodiment of the present invention.

[0049] Figure 4 This is a diagram illustrating the ditching mode programmable logic controller control and interlocking protection of a zinc slag self-cleaning sensor operation control device based on cyclic ditching, provided by an embodiment of the present invention.

[0050] Explanation of reference numerals in the attached diagram: 1. Temperature sensor; 2. Temperature controller; 3. Programmable logic controller; 4. Autotransformer; 5. First intermediate relay; 6. Second intermediate relay; 7. Sixth contactor; 8. Third contactor; 9. Fourth contactor; 10. First contactor; 11. Fifth contactor; 12. Second contactor; 13. Molded case circuit breaker. Detailed Implementation

[0051] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0052] like Figure 1 As shown, an embodiment of the present invention proposes an operation control method for a zinc slag self-cleaning sensor based on cyclic flushing, the method comprising the following steps:

[0053] Step 1: Monitor the temperature of the zinc liquid in the zinc pot in real time using temperature sensor 1, and transmit the temperature signal to temperature control instrument 2;

[0054] Step 2: Temperature controller 2 processes the temperature signal according to the set threshold and outputs a high temperature or low temperature signal to programmable logic controller 3.

[0055] Step 3: Based on the temperature signal, the programmable logic controller 3 controls the contactor group to switch the output voltage of the autotransformer 4, so that the inductor can operate in low power, medium power or high power mode.

[0056] Step 4: Send a trenching start command to the programmable logic controller 3 via the touch screen to immediately cut off the control logic of the temperature control mode;

[0057] Step 5: The programmable logic controller 3 sequentially triggers the high-power contactors of each sensor in a preset order, each time making a single sensor run at high power for a preset time, while the remaining sensors synchronously switch to low-power operation.

[0058] Step 6: Using the strong electromagnetic force generated by the inductor during high-power operation, the zinc liquid is driven to flush the inner wall of the solution channel at high speed, peeling off and discharging the deposited zinc dross. After the cyclic flushing operation of all inductors is completed, the programmable logic controller 3 automatically switches back to the temperature control mode and re-enters the cycle of temperature monitoring and power adjustment.

[0059] In this embodiment of the invention, high-power operation drives the molten zinc to rapidly flush the solution channel using strong electromagnetic force, effectively stripping and discharging deposited zinc dross, reducing channel blockage, and enhancing the fluidity of the molten zinc. Real-time monitoring by a temperature sensor, combined with power adjustment by a temperature controller and a programmable logic controller (PLC), allows the inductors to dynamically operate in low / medium / high power modes, maintaining a stable molten zinc temperature and improving heating uniformity and efficiency. The cyclic flushing mode reduces wear and tear on the inductors caused by zinc dross accumulation, avoids tool damage caused by conventional physical cleaning, extends the inductor's lifespan, and reduces manual cleaning time and costs. After the touchscreen triggers the flushing mode, the PLC automatically cuts off temperature control and cyclically triggers high-power operation of a single inductor, while the remaining inductors maintain heating at low power. Temperature control is automatically restored upon completion, ensuring uninterrupted production.

[0060] In a preferred embodiment of the present invention, step 1, in which the temperature sensor 1 monitors the temperature of the zinc liquid in the zinc pot in real time and transmits the temperature signal to the temperature controller 2; and step 2, in which the temperature controller 2 processes the temperature signal according to a set threshold and outputs a high-temperature or low-temperature signal to the programmable logic controller 3, may include:

[0061] Step 200: Temperature controller 2 receives real-time zinc liquid temperature data from temperature sensor 1;

[0062] Step 201: When the temperature of the zinc liquid is lower than the preset threshold lower limit, a low temperature signal is output to the second intermediate relay 6, and a low temperature command is sent to the programmable logic controller 3 through the normally open contact of the second intermediate relay 6.

[0063] Step 202: When the temperature of the zinc liquid is higher than the upper limit of the set threshold, a high temperature signal is output to the first intermediate relay 5, and a high temperature command is sent to the programmable logic controller 3 through the normally open contact of the first intermediate relay 5.

[0064] In this embodiment of the invention, the temperature sensor (RT) employs a high-temperature resistant metal probe structure, vertically immersed in the molten zinc inside the zinc pot. Its installation position must ensure that the probe tip is located in the mainstream area of ​​the molten zinc to accurately reflect the overall temperature. The sensor is connected to the signal input terminal of the temperature controller (XM) via a shielded cable. The transmission protocol uses an industrial standard 4-20mA current signal to ensure anti-interference capability. The monitoring frequency is set to 1 time / second, continuously acquiring molten zinc temperature data in real time and transmitting it to the analog input module of the temperature controller (XM).

[0065] In step 200, the central processing unit (CPU) of the temperature controller (XM) converts the 4-20mA current signal input from the sensor into a digital temperature value via an analog-to-digital converter (A / D) and stores it in an internal register. The preset temperature threshold range of the instrument is set by the operator via the panel buttons, for example, the lower threshold is 450℃ and the upper threshold is 480℃ (the specific values ​​can be adjusted according to requirements).

[0066] Step 201: When the temperature controller (XM) detects that the zinc liquid temperature is lower than the preset lower limit threshold (e.g., 450℃), the internal logic circuit triggers the low-temperature signal output relay to operate. The output terminal of this relay is connected to the coil terminal of the second intermediate relay (KA2). The 220V AC power supply powers KA2 through the output terminal of the temperature controller. The normally open contact of KA2 is connected to the input terminal I0.0 of the programmable logic controller (PLC). When the coil of KA2 is energized, the normally open contact closes, sending a high-level low-temperature command (logic "1" signal) to the PLC.

[0067] Step 202: If the zinc liquid temperature exceeds the preset upper limit threshold (e.g., 480℃), the high-temperature signal output relay inside the temperature controller (XM) is activated, and its output terminal is connected to the coil of the first intermediate relay (KA1). The normally open contact of KA1 is connected to the input terminal I0.1 of the PLC. When the coil of KA1 is energized, the normally open contact closes, sending a high-level high-temperature command (logic "1" signal) to the PLC. A fuse (FU) is connected in series in the coil circuit of the intermediate relays (KA1, KA2) to prevent current overload from damaging the components; an RC absorption circuit is connected in parallel across the contacts to suppress electromagnetic interference during switching and ensure the stability of signal transmission.

[0068] High-frequency sampling by the temperature sensor and shielded cable transmission prevent signal attenuation in the high-temperature environment of the zinc pot. The temperature controller automatically outputs high and low temperature signals according to preset thresholds, replacing manual inspection and adjustment, while avoiding temperature fluctuations caused by human error. The output signal of the temperature controller is amplified by KA1 and KA2, enabling long-distance cable transmission (up to 100 meters) and isolating strong and weak current circuits to prevent strong electrical interference to the PLC input module, thus improving system reliability. After processing by the PLC logic, the high and low temperature signals can quickly trigger the sensor power switching (e.g., switching from low power 20KW to high power 400KW), keeping the zinc liquid temperature fluctuation range within ±5℃, meeting the strict requirements of temperature uniformity in hot-dip galvanizing processes, and thus stabilizing the quality of the zinc coating. When the temperature abnormally exceeds the threshold, the signal transmission link can simultaneously trigger an audible and visual alarm device (not mentioned in the document but potentially extendable), reminding operators to investigate potential problems and prevent sensor overheating damage or rapid zinc dross deposition due to temperature runaway, extending equipment lifespan.

[0069] In a preferred embodiment of the present invention, step 3 above, in which the programmable logic controller 3 controls the contactor group to switch the output voltage of the autotransformer 4 based on the temperature signal, so that the inductor operates in low-power, medium-power, or high-power mode, wherein the low-power mode is 120V, the high-power mode is 500V, and the medium-power mode is 200V, may include:

[0070] Step 300: When a low temperature command is received, the coil of the sixth contactor 7 is triggered. The normally open contact of the sixth contactor 7 closes to trigger the coil of the third contactor 8. The main contacts of the third contactor 8 connect the low power setting of the autotransformer 4, so that the inductor runs at 20KW.

[0071] Step 301: When a high temperature command is received, the coil of the fourth contactor 9 is triggered. The normally open contact of the fourth contactor 9 closes to trigger the coil of the first contactor 10. The main contact of the first contactor 10 connects the high power setting of the autotransformer 4, so that the inductor runs at 400KW.

[0072] Step 302: When there is no high or low temperature command, the coil of the fifth contactor 11 is triggered. The normally open contact of the fifth contactor 11 closes to trigger the coil of the second contactor 12. The main contact of the second contactor 12 connects to the power setting of the autotransformer 4, so that the inductor runs at 160KW.

[0073] Step 303, wherein the first contactor 10, the second contactor 12, and the third contactor 8 are prevented from being turned on simultaneously by an interlocking circuit.

[0074] In this embodiment of the invention, when the input terminal I0.0 of the programmable logic controller (PLC) receives a low-temperature command (high-level signal) from the second intermediate relay (KA2), the corresponding contact I0.0 in the PLC's internal ladder diagram program closes, triggering the output relay Q0.5 coil to be energized. The output terminal of Q0.5 is connected to the coil terminal of the sixth contactor (KM6) through a 24V DC power supply, forming an energizing circuit.

[0075] Contactor operation procedure:

[0076] After the KM6 coil is energized, its normally open contact KM6-1 closes (located in the control circuit). This contact is connected in series with the coil of the third contactor (KM3) in the 220V AC circuit. After KM6-1 closes, the KM3 coil is energized, and its main contact KM3-1 (located in the main circuit) connects to the 120V output terminal of the autotransformer (TB). At this time, the inductor (DL) is connected to a 120V voltage, and the power is calculated according to the power formula (P=U). 2 The actual operating power is 20KW (low power mode), where P represents the electrical power consumed by the inductor (DL); U is the effective voltage applied across the inductor (DL); and R is the internal resistance of the inductor (DL). The low power tap of the autotransformer TB is connected to the input terminal of the main contact of KM3 via a copper busbar, and the output terminal is directly connected to the input terminal of the inductor DL. In the control circuit, both the coil circuits of KM6 and KM3 are connected in series with a 1A fuse (FU) to prevent short circuit overload; a 0.1μF / 400V RC absorption circuit is connected in parallel across the coils to suppress electromagnetic interference.

[0077] Step 301: When the PLC input terminal I0.1 receives a high-temperature command from the first intermediate relay (KA1), the PLC internal program triggers the output relay Q0.3 to energize. The output terminal of Q0.3 is connected to the coil of the fourth contactor (KM4) via a 24V power supply, energizing the KM4 coil. After the KM4 coil is energized, its normally open contact KM4-1 closes, connecting the coil circuit (220V AC) of the first contactor (KM1). After the KM1 coil is energized, the main contact KM1-1 connects to the 500V output terminal of the autotransformer TB, and the inductor DL ​​is connected to a 500V voltage, increasing the operating power to 400KW (high-power mode). The KM1 main contact is made of silver alloy with a rated current of 1000A, meeting the switching requirements under 400KW power. A thermal relay (FR) is installed in the control circuit to automatically cut off the power supply when the KM1 coil current exceeds the rated value, preventing the contactor from overheating and being damaged.

[0078] Step 302: When the PLC does not detect the input signals I0.0 (low temperature) and I0.1 (high temperature), the internal program will trigger the output relay Q0.4 to be energized by default, which is connected to the coil of the fifth contactor (KM5).

[0079] Circuit conduction in medium power mode:

[0080] After the KM5 coil is energized, the normally open contact KM5-1 closes, triggering the coil circuit of the second contactor (KM2). The main contact KM2-1 of KM2 connects to the 200V output terminal of the autotransformer TB, and the inductor DL ​​operates at 200V, corresponding to a power of 160KW (medium power mode).

[0081] The 200V tap of the autotransformer TB is located between the 120V and 500V taps. During switching, a 0.5-second delay is set through the PLC program to avoid current surges caused by voltage changes and ensure a smooth change in the magnetic flux of the inductor.

[0082] Step 303: In the control circuits of the first contactor KM1, the second contactor KM2, and the third contactor KM3, the normally closed contacts of the other two contactors are connected in series. For example, the normally closed contacts KM2-2 and KM3-2 of KM2 and KM3 are connected in series in the coil circuit of KM1 to ensure that when the coil of KM1 is energized, the coil circuits of KM2 and KM3 are cut off and cannot be simultaneously energized. The normally closed contacts adopt a bridge-type double-break structure and are installed on the auxiliary contact module of the contactor body. The wires of the interlock circuit are marked in red to distinguish them from other control circuits; a warning label "Interlock circuit must not be short-circuited" is set at the terminal block to prevent accidental operation during maintenance.

[0083] A three-level power regulation mechanism (low, medium, and high power) is adopted to reduce the temperature fluctuation range of the zinc liquid. Compared with the traditional two-level regulation, temperature uniformity is significantly improved, meeting the stringent temperature stability requirements of the hot-dip galvanizing process. A mechanical interlock circuit design completely avoids the risk of simultaneous conduction of power contactors, ensuring the safe operation of the autotransformer. This mechanism boasts extremely high response speed and durability, capable of withstanding frequent switching conditions and effectively extending equipment lifespan. Intelligent power level switching is achieved based on temperature signals, with a response speed significantly superior to manual operation. For example, when the zinc liquid temperature approaches the set threshold, the medium power mode automatically intervenes, reducing energy loss from direct switching between high and low power, and significantly improving energy utilization. The medium power mode plays a crucial role during the temperature stabilization phase, significantly reducing energy consumption compared to the high-low power switching mode, resulting in considerable economic benefits over long-term operation. Contactor status is fed back through a real-time monitoring system, and abnormal conditions automatically trigger the protection mechanism. Maintenance personnel can quickly obtain fault information through a human-machine interface, shortening fault location time and improving system maintainability.

[0084] In a preferred embodiment of the present invention, step 4 above, which involves sending a trenching start command to the programmable logic controller 3 via a touchscreen to immediately cut off the control logic of the temperature control mode, may include:

[0085] The touch screen generates a pulse-type start signal and transmits it to the input port of the programmable logic controller 3. The programmable logic controller 3 disconnects the coil control circuits of the fourth contactor 9, the fifth contactor 11, and the sixth contactor 7, and blocks the output signal from the temperature controller 2 to the first intermediate relay 5 and the second intermediate relay 6.

[0086] In this embodiment of the invention, the touchscreen (human-machine interface) is connected to the communication module of the programmable logic controller (PLC) (such as Port0 of CPU224XP) via an RS-485 communication cable, using the Modbus RTU communication protocol. The "ditching start" button on the touchscreen is a self-resetting button that generates a 24V DC pulse signal lasting 500ms when pressed. The high level of the pulse signal is 24V (corresponding to logic "1"), and the low level is 0V (logic "0"). It is connected through the PLC's digital input module (such as I0.2 port of EM221). The input port has an internal opto-isolation circuit to prevent electrical interference from the touchscreen side from affecting the operation of the PLC.

[0087] The PLC's logic processing of the received pulse signals:

[0088] When the PLC's I0.2 port detects a 24V high level, the rising edge detection instruction (such as EU) in the internal ladder diagram program is triggered, causing the output relays Q0.0 to Q0.2 to have a "1" built in within one scan cycle.

[0089] The output terminals of Q0.0, Q0.1, and Q0.2 are connected to the coil circuits of the fourth contactor (KM4), the fifth contactor (KM5), and the sixth contactor (KM6), respectively. When Q0.0 to Q0.2 are set to "1", the corresponding output relay contacts open, cutting off the 24V DC power supply to KM4, KM5, and KM6, causing the coils of these three contactors to lose power, and the normally open contacts reset and open. The coil circuits of KM4, KM5, and KM6 contain relay contacts of the PLC output module (such as Q0.0). When the contacts open, the coils lose power, which in turn prevents the contactors KM1, KM2, and KM3 controlled by them from conducting (because the normally open contacts of KM4-KM6 are the triggering condition for the coils of KM1-KM3).

[0090] Block the output signal from the temperature controller to the intermediate relay:

[0091] The PLC controls an intermediate relay (KA3) through the Q0.3 port of the digital output module. The normally closed contact of KA3 is connected in series in the signal transmission circuit between the temperature controller (XM) and the first intermediate relay (KA1) and the second intermediate relay (KA2).

[0092] Specific action procedures:

[0093] When the PLC receives the trenching start signal, Q0.3 is set to "1", the KA3 coil is energized, and its normally closed contact KA3-1 opens, cutting off the 220V AC signal circuit from the temperature controller XM to KA1 and KA2. At this time, regardless of the temperature of the zinc liquid, the high and low temperature signals of XM cannot be transmitted to the PLC through KA1 and KA2, completely blocking the logic chain of the temperature control mode.

[0094] Hardware isolation between ditching mode and temperature control mode:

[0095] In the control circuit of KM4-KM6, in addition to the PLC output contacts, there is also a hardware interlock switch (SA1) for the ditching mode connected in parallel. When SA1 is closed, the power supply to the coils of KM4-KM6 is forcibly disconnected, ensuring that the temperature control mode is completely disabled during the ditching process, and avoiding circuit failure caused by the conflict between the two modes.

[0096] By disconnecting the temperature control-related relay circuit, the inductor maintains a stable high-power operation during dredging, preventing power switching interruptions caused by temperature fluctuations. This mechanism ensures the complete execution of each dredging operation, improving zinc slag removal efficiency. Signal blocking technology prevents simultaneous activation of temperature control and dredging modes. This design completely avoids current surges caused by frequent power switching, effectively extending the service life of critical components such as the inductor coil. Based on a high-speed pulse triggering mechanism, mode switching is completed in a very short time, ensuring immediate effect of dredging commands. This technology shortens the residence time of zinc slag in the molten trench, improving cleaning efficiency.

[0097] Through a dual protection mechanism of hardware interlocking and electrical isolation, physical isolation between the grouting mode and the temperature control mode is achieved, significantly improving system stability and anti-interference capabilities. Simultaneously, the automatic operation log recording function provides efficient support for equipment status traceability and maintenance troubleshooting. Actively shielding the temperature control signal during grouting fundamentally avoids zinc bath temperature fluctuations caused by power switching. This design significantly improves the uniformity of the galvanized layer thickness while reducing product defect rates.

[0098] In a preferred embodiment of the present invention, step 5 above, in which the programmable logic controller 3 sequentially and cyclically triggers the high-power contactors of each sensor in a preset order, each time causing a single sensor to operate at high power for a preset duration, while the remaining sensors synchronously switch to a low-power operating state, may include:

[0099] Step 500: Upon receiving the trenching start command, immediately disconnect the outputs of the fourth contactor 9, the fifth contactor 11, and the sixth contactor 7 in temperature control mode.

[0100] Step 501: Select the first sensor and trigger the coil of the fourth contactor 9 corresponding to the first sensor. The normally open contact of the fourth contactor 9 closes and triggers the coil of the first contactor 10, so that the first sensor is connected to the 500V high power level. At the same time, the remaining sensors are forced to trigger the coil of the sixth contactor 7. The normally open contact of the sixth contactor 7 closes and triggers the coil of the third contactor 8, so that the remaining sensors are connected to the 120V low power level.

[0101] In this embodiment of the invention, the I0.2 port of the digital input module (such as EM221) of the programmable logic controller (PLC) is connected to the signal line of the trench start button on the touch screen. When the button is pressed, a 24V DC pulse signal is input. After the PLC internal program detects this signal, it immediately outputs low-level signals through the Q0.3, Q0.4, and Q0.5 ports of the digital output module (such as EM222), which respectively cut off the coil power supply circuits of the fourth contactor (KM4), the fifth contactor (KM5), and the sixth contactor (KM6).

[0102] Details of circuit disconnection:

[0103] The coil circuits of KM4, KM5, and KM6 are connected in series with relay contacts of the PLC output module (such as Q0.3 controlling KM4). When the PLC output is low, the relay contacts open, and the 24V DC power supply cannot be connected to the coil, causing KM4, KM5, and KM6 to lose power. Their normally open contacts then reset and open, thereby cutting off the trigger signals controlling the first contactor (KM1), the second contactor (KM2), and the third contactor (KM3) in temperature control mode.

[0104] Step 501: The PLC internally stores sensor address registers (e.g., V100.0-V100.7), with the default address of the first sensor being V100.0. After the trenching operation starts, the PLC scans this register and first activates the output port (e.g., Q0.3) of the corresponding first sensor. This port is connected to the fourth contactor (KM4-1) coil of the first sensor, energizing the KM4-1 coil.

[0105] High-power mode triggering process:

[0106] After the KM4-1 coil is energized, its normally open contact KM4-1-1 closes, connecting the coil circuit (220V AC) of the first contactor (KM1-1). The main contacts of KM1-1 close, connecting the 500V high-power setting of the autotransformer (TB), and the first inductor is connected to 500V voltage, operating at 400KW power. At this time, the primary coil of the first inductor generates a strong magnetic field, driving the zinc liquid in its molten groove to flow at high speed.

[0107] Remaining sensor low-power switching mechanism:

[0108] The PLC triggers the coil of the sixth contactor (KM6-n) of the remaining sensors in batches via output port Q0.5 (n≥2). After the KM6-n coil is energized, the normally open contact KM6-n-1 closes, triggering the coil of the third contactor (KM3-n), causing the main contact of KM3-n to connect to the 120V low-power setting of TB. The remaining sensors operate at 20KW power. During this process, the PLC ensures that the high-power and low-power contactors do not conduct simultaneously through a hardware interlock circuit (the normally closed contacts of KM1-n and KM3-n are in series).

[0109] The high-power operation duration of the first sensor is set by the PLC's internal timer (such as T37), with a default of 30 seconds. After the timer expires, the PLC automatically switches to the address register of the next sensor and repeats the above triggering process. All contactor coil circuits are connected in series with a 1A fuse, and an RC absorption circuit (0.1μF / 400V) is connected in parallel across the main contacts to suppress arc interference during switching.

[0110] When a single inductor operates at high power, it generates a high-intensity electromagnetic field, driving the molten zinc to flow at high speed. This effectively removes zinc dross deposited on the inner wall of the galvanizing trench, resulting in a breakthrough improvement in flushing efficiency. The remaining inductors maintain low-power operation, ensuring the overall temperature of the zinc pot remains stable and preventing interference with the continuity of the hot-dip galvanizing process. Compared to the simultaneous high-power operation of multiple inductors, the single-inductor cyclic high-power operation mode achieves a qualitative leap in energy utilization efficiency, reducing the total system energy consumption. It avoids the risk of coil overheating caused by multiple inductors operating at high power simultaneously, effectively controlling the operating temperature of key components (such as windings) and significantly extending the equipment's service life. The cyclic flushing mechanism reduces the amount of zinc dross deposited in the galvanizing trench by orders of magnitude, extending the manual cleaning cycle and reducing maintenance time. The uniformity of the molten zinc temperature reaches a new industry high, and the fluctuation range of the galvanized layer thickness is significantly narrowed, with product yield exceeding industry benchmarks. Hardware interlocks and PLC control logic form a three-dimensional protection network, eliminating electrical safety risks during power switching, and the system stability has been verified under stringent operating conditions. It supports flexible expansion of the number of sensors, and can be adapted to zinc pot systems of different sizes by simply adjusting the control logic parameters, without the need for hardware modification, thus reducing the cost of production line upgrades.

[0111] In a preferred embodiment of the present invention, step 6 above, which utilizes the strong electromagnetic force generated by the inductor during high-power operation to drive the molten zinc to rapidly flush the inner wall of the solution channel, peeling off and discharging the deposited zinc dross, and after completing the cyclic flushing operation of all inductors, the programmable logic controller 3 automatically switches back to the temperature control mode and re-enters the cycle of temperature monitoring and power adjustment, may include:

[0112] Step 600: During high-power operation, the inductor generates a strong alternating electromagnetic field in the solution channel, which acts on the zinc liquid to generate a directional Lorentz force, driving the zinc liquid to scour the inner wall of the solution channel at high speed and mechanically peel off the attached zinc dross; the peeled zinc dross is discharged with the zinc liquid to the main deposition area of ​​the zinc pot.

[0113] Step 601: After all sensors have completed the cyclic dredging, the programmable logic controller 3 disconnects the output of all fourth contactors 9; restores the temperature control logic control authority of the fourth contactor 9, the fifth contactor 11 and the sixth contactor 7; and reactivates the closed-loop temperature regulation link of the temperature sensor 1, the temperature controller 2 and the programmable logic controller 3.

[0114] In this embodiment of the invention, when the inductor operates at a high power of 500V / 400KW, its coil is supplied with three-phase alternating current, generating an alternating magnetic field with a frequency of 50Hz in the iron core (silicon steel sheet composite). The liquid zinc in the molten groove acts as a conductive medium, cutting the alternating magnetic field lines to generate induced current (eddy current). The direction of the current follows Lenz's law and is opposite to the direction of the current in the primary coil.

[0115] The generation of Lorentz force and its driving force by molten zinc:

[0116] The induced current is affected by the Lorentz force in the alternating magnetic field. The direction of the force is determined by the left-hand rule (magnetic field direction × current direction → force direction). This force drives the zinc liquid to flow directionally and at high speed along the "day" - shaped holes in the melting groove, with a flow velocity of up to 3 m / s (1.2 m / s in the conventional temperature control mode). When the zinc liquid scours the inner wall of the melting groove at high speed, it generates a shear force (≥50 Pa) on the attached zinc slag, exceeding the adhesion force between the zinc slag and the refractory material (about 30 Pa), causing the zinc slag to peel off. The peeled zinc slag flows with the zinc liquid through the connection port between the melting groove and the main body of the zinc pot and is discharged into the sedimentation area at the bottom of the zinc pot. The melting groove is designed in a "day" shape, and its curved structure enhances the turbulence effect of the zinc liquid, further improving the zinc slag peeling efficiency.

[0117] Step 601, when the internal counter of the PLC (such as C10) records that all inductors have completed a high - power flushing (assuming n inductors and the counter value = n), the PLC disconnects the coil power supply of all fourth contactors (KM4 - 1 to KM4 - n) through the digital output module (the Q0.3 port outputs a low level), making the main contacts of KM4 disconnect, and cutting off the high - power gear (500 V) of the inductor. The PLC simultaneously outputs a high level to the Q0.3, Q0.4, and Q0.5 ports, re - activating the control circuits of KM4, KM5, and KM6. At this time, the high - and low - temperature signals transmitted by the temperature control instrument (XM) to the PLC through the intermediate relays (KA1, KA2) become effective again, and the normally open contacts of KM4 - KM6 can normally trigger the KM1 - KM3 contactors to achieve the power switching of the inductor. The temperature sensor (RT) re - transmits the zinc liquid temperature signal (4 - 20 mA) to XM, and XM outputs high - and low - temperature signals to KA1, KA2 according to the threshold value (such as 450 - 480 °C). After being processed by the PLC logic, it controls KM1 - KM3 to make the inductor operate according to the temperature control mode (low power 20 KW, medium power 160 KW, high power 400 KW). During this process, the PLC ensures that KM1 - KM3 are not conducted simultaneously through the interlock circuit.

[0118] The strong electromagnetic field generated during high - power operation drives the zinc liquid to form a high - speed scouring effect, significantly improving the zinc slag peeling efficiency on the inner wall of the melting groove, effectively avoiding the attenuation of the inductor current caused by zinc slag deposition, and maintaining the stability of power output. After the flushing is completed, the system instantaneously switches back to the temperature control mode, ensuring that the zinc liquid temperature quickly returns to the set range, and the temperature fluctuation amplitude is substantially narrowed, meeting the stringent requirements of high - end galvanized products for temperature uniformity. The reduction in the zinc slag deposition amount extends the service life of the core components of the inductor. At the same time, the frequency of manual cleaning is reduced by an order of magnitude, the single - time maintenance operation time is significantly compressed, and the operation and maintenance cost is structurally optimized. The full - process automatic control completely avoids manual operation errors. The seamless switching between flushing and the temperature control mode ensures the consistency of the galvanizing process, and the product defect rate drops by a large margin. The coordinated operation mode of single - point high - power and global low - power reconstructs the energy consumption structure, achieving a substantial improvement in the electric energy utilization efficiency compared with the traditional parallel high - power mode.

[0119] In practical applications, it consists of a zinc pot body (rectangular, holding molten zinc) and inductors (mounted on the outside). The inductor's internal molten groove is connected to the zinc pot body, heating the molten zinc through convective heat exchange. It employs a three-phase, three-wire system, including a molded case circuit breaker (QS), an autotransformer (TB, outputting 120V / 200V / 500V three voltage levels), and at least two inductors (DL), with the DL connected in parallel to the TB output. A temperature sensor (RT) is immersed in the molten zinc, monitoring the temperature in real time and transmitting the data to a temperature controller (XM). A programmable logic controller (PLC) receives high and low temperature signals from the XM and grooving commands from the touchscreen, outputting control signals to the contactor group. Intermediate relays (KA1, KA2) amplify the signals, and contactors (KM1-KM6) control the TB voltage switching, where KM1-KM3 correspond to high / medium / low power levels, and KM4-KM6 are mode switching trigger elements.

[0120] Temperature closed-loop control is achieved under temperature control mode:

[0121] The RT acquires the temperature of the zinc bath at a frequency of 1 time per second and transmits it to the XM via a 4-20mA current signal. The XM compares the temperature value with a preset threshold (e.g., 450-480℃).

[0122] If the temperature is less than the lower limit (450℃), XM outputs a low temperature signal to KA2, and the normally open contact of KA2 closes to send a low temperature command to the PLC.

[0123] If the temperature exceeds the upper limit (480℃), XM outputs a high temperature signal to KA1, and the normally open contact of KA1 closes to send a high temperature command to the PLC.

[0124] Automatic adjustment of sensor power:

[0125] Low power mode (20KW / 120V): After the PLC receives the low temperature command, it triggers the KM6 coil. The normally open contact of KM6 closes to trigger the KM3 coil. The main contact of KM3 connects to the 120V level of TB.

[0126] High power mode (400KW / 500V): After the PLC receives the high temperature command, it triggers the KM4 coil. The normally open contact of KM4 closes to trigger the KM1 coil. The main contact of KM1 connects to the 500V level of TB.

[0127] Medium power mode (160KW / 200V): When there is no high or low temperature command, the PLC triggers the KM5 coil, the normally open contact of KM5 closes to trigger the KM2 coil, and the main contact of KM2 connects to the 200V level of TB.

[0128] Normally closed contacts are connected in series in the control circuits of KM1, KM2, and KM3 to ensure that the three do not conduct at the same time, thus preventing phase-to-phase short circuits in TB.

[0129] Triggering of gully erosion mode and implementation of cyclic gully erosion:

[0130] The operator presses the "Ditching Start" button on the touchscreen, generating a 500ms pulse signal to the PLC's I0.2 port. The PLC immediately disconnects the power supply to the coils of KM4, KM5, and KM6, and simultaneously cuts off the signal transmission from XM to KA1 and KA2 via intermediate relay KA3, completely blocking the temperature control logic.

[0131] Single sensor operates at high power while the others operate at low power:

[0132] First sensor trigger: The PLC activates the KM4 coil of the first sensor in a preset sequence. The normally open contact of KM4 triggers the KM1 coil, so that the sensor is connected to the 500V high power level (400KW). The zinc liquid in its molten groove generates a directional flow with a flow rate of 3m / s due to strong electromagnetic force.

[0133] Low power for other sensors: The PLC forcibly triggers the KM6 coil of the other sensors, and the normally open contact of KM6 triggers the KM3 coil, connecting to the 120V low power setting (20KW) to maintain the overall temperature of the zinc pot.

[0134] After the PLC's internal timer (e.g., 30 seconds) finishes counting down, it switches to triggering the next sensor's KM4, repeating the "single high power + others low power" mode until all sensors have completed grooving. During high power operation, the sensor coils generate an alternating magnetic field. The induced current in the zinc molten metal is driven by the Lorentz force to rapidly scour the inner wall of the molten groove. Shear force (≥50Pa) peels off the attached zinc dross, which is then discharged into the zinc pot deposition area along with the molten metal. After all sensors have completed grooving, the PLC disconnects all KM4 coils and restores the temperature control logic for KM4-KM6: RT retransmits the temperature signal to XM, and XM sends high / low temperature commands to the PLC via KA1 / KA2. The PLC then controls KM1-KM3 to switch power, re-entering the temperature closed-loop regulation.

[0135] like Figure 2 As shown, embodiments of the present invention also provide an operation control device for a zinc slag self-cleaning sensor based on cyclic flushing, comprising:

[0136] The main circuit module is used to construct a three-phase three-wire circuit, including a molded case circuit breaker 13 connected to the three-phase power input terminal, an autotransformer 4 connected to the molded case circuit breaker 13 through the input terminal and providing three adjustable voltages at the output terminal, and at least two inductors connected in parallel to the output terminal of the autotransformer 4, with the molten groove of each inductor connected to the zinc pot body.

[0137] The signal acquisition module is used to monitor and transmit temperature signals in real time. It includes a temperature sensor 1 immersed in the zinc pot body to monitor the temperature of the zinc liquid, and a temperature controller 2 receiving the signal from the temperature sensor 1 and outputting a high temperature or low temperature signal.

[0138] The logic control module is used to process control signals and perform logic operations, including the programmable logic controller 3 receiving high temperature or low temperature commands from the temperature controller 2; responding to the pulse start signal from the touch screen; and the first intermediate relay 5 and the second intermediate relay 6 transmitting the high temperature and low temperature commands from the temperature controller 2 to the programmable logic controller 3, respectively.

[0139] The power switching module is used to realize the power regulation of the sensor. It includes a programmable logic controller 3 that controls the contactor group to switch the output voltage of the autotransformer 4 based on temperature commands, so that the sensor can operate in low power, medium power or high power mode.

[0140] An interlock protection module is used to mutually exclude the conduction of the coil power supply circuits of the first contactor 10, the second contactor 12, and the third contactor 8.

[0141] The human-machine interaction module is used to realize human-machine signal interaction and includes a touch screen that communicates with the programmable logic controller 3 and generates pulse start signals to activate the trenching module.

[0142] It should be noted that this device is a device corresponding to the above method. All implementation methods in the above method embodiments are applicable to this embodiment and can achieve the same technical effect.

[0143] Embodiments of the present invention also provide a computing device, including: a processor and a memory storing a computer program, wherein the computer program, when executed by the processor, performs the method described above. All implementations in the above method embodiments are applicable to this embodiment and can achieve the same technical effects.

[0144] Embodiments of the present invention also provide a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method described above. All implementations in the above method embodiments are applicable to this embodiment and can achieve the same technical effects.

[0145] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for operating control of a zinc residue self-cleaning inductor based on a circulating gully, characterized by, The method comprises: Step 1, real-time monitoring the temperature of zinc liquid in zinc pot by temperature sensor (1), and transmitting the temperature signal to temperature control instrument (2); Step 2, temperature control instrument (2) processes the temperature signal according to the set threshold value, and outputs high-temperature or low-temperature signal to programmable logic controller (3), wherein temperature control instrument (2) receives real-time zinc liquid temperature data of temperature sensor (1); when the temperature of zinc liquid is lower than the lower limit of preset threshold value, low-temperature signal is output to the second intermediate relay (6), and low-temperature instruction is sent to programmable logic controller (3) through the normally open contact of the second intermediate relay (6); when the temperature of zinc liquid is higher than the upper limit of the set threshold value, high-temperature signal is output to the first intermediate relay (5), and high-temperature instruction is sent to programmable logic controller (3) through the normally open contact of the first intermediate relay (5); Step 3, programmable logic controller (3) controls the contactor group to switch the output voltage of autotransformer (4) based on the temperature signal, so that the inductor operates in low-power, medium-power or high-power mode, wherein when receiving low-temperature instruction, the sixth contactor (7) coil is triggered, the normally open point of the sixth contactor (7) is closed to trigger the third contactor (8) coil, the main contact of the third contactor (8) is connected to the low-power gear of autotransformer (4), so that the inductor operates at 20KW; when receiving high-temperature instruction, the fourth contactor (9) coil is triggered, the normally open point of the fourth contactor (9) is closed to trigger the first contactor (10) coil, the main contact of the first contactor (10) is connected to the high-power gear of autotransformer (4), so that the inductor operates at 400KW; when there is no high-temperature or low-temperature instruction, the fifth contactor (11) coil is triggered, the normally open point of the fifth contactor (11) is closed to trigger the second contactor (12) coil, the main contact of the second contactor (12) is connected to the medium-power gear of autotransformer (4), so that the inductor operates at 160KW; wherein the first contactor (10), the second contactor (12) and the third contactor (8) are prevented from being turned on at the same time through interlocking circuit; the low-power gear is 120V, the high-power gear is 500V, and the medium-power gear is 200V; Step 4, sending trench starting instruction to programmable logic controller (3) through touch screen, and immediately cutting off the control logic of temperature control mode, wherein the touch screen generates pulse starting signal and transmits it to the input port of programmable logic controller (3), programmable logic controller (3) disconnects the coil control circuit of the fourth contactor (9), the fifth contactor (11) and the sixth contactor (7), and blocks the output signal of temperature control instrument (2) to the first intermediate relay (5) and the second intermediate relay (6). Step 5, the programmable logic controller (3) triggers the high-power contactor of each inductor in a preset order in turn, each time making a single inductor run at high power for a preset time, and the remaining inductors are switched to low-power operation state synchronously, wherein, after receiving the trench starting instruction, immediately disconnect the fourth contactor (9), the fifth contactor (11), and the sixth contactor (7) output in the temperature control mode; select the first inductor, trigger the fourth contactor (9) coil corresponding to the first inductor, the fourth contactor (9) normally open point is closed to trigger the first contactor (10) coil, so that the first inductor is connected to 500V high power position, while forcing the remaining inductors to trigger the sixth contactor (7) coil, the sixth contactor (7) normally open point is closed to trigger the third contactor (8) coil, so that the remaining inductors are connected to 120V low power position; Step 6, the strong electromagnetic force generated by the inductor during high-power operation drives the zinc liquid to high-speed flush the inner wall of the dissolution trench, peeling off and discharging the deposited zinc slag, and after completing the cycle of all inductors, the programmable logic controller (3) automatically switches back to the temperature control mode and reenters the cycle of temperature monitoring and power regulation, wherein, during high-power operation, the inductor forms a strong alternating electromagnetic field in the dissolution trench, which acts on the zinc liquid to generate a directional Lorentz force, driving the zinc liquid to high-speed flush the inner wall of the dissolution trench and mechanically peeling off the attached zinc slag; the peeled zinc slag flows out with the zinc liquid to the deposition area of the zinc pot main body; after the cycle of all inductors is completed, the programmable logic controller (3) disconnects the output of all fourth contactors (9); restores the temperature control logic control authority of the fourth contactor (9), the fifth contactor (11), and the sixth contactor (7); reactivates the closed-loop temperature regulation link of the temperature sensor (1), the temperature control instrument (2), and the programmable logic controller (3).

2. A device for operating control of a self-cleaning inductor based on cyclic gully of zinc residue, which implements the method as claimed in claim 1, characterized in that, It includes: A main circuit module for building a three-phase three-wire circuit, including a molded case circuit breaker (13) connected to a three-phase power input, a self-coupled transformer (4) connected to the molded case circuit breaker (13) through the input and providing three adjustable voltage outputs, and at least two inductors connected in parallel to the output of the self-coupled transformer (4), with the dissolution trench of each inductor being in communication with the zinc pot main body; A signal acquisition module for real-time monitoring and transmission of temperature signals, including a temperature sensor (1) immersed in the zinc pot main body to monitor the temperature of the zinc liquid, and a temperature control instrument (2) receiving the temperature sensor (1) signal and outputting high or low temperature signals; A logic control module for processing control signals and performing logic operations, including a programmable logic controller (3) receiving high or low temperature instructions from the temperature control instrument (2); responding to the pulse start signal of the touch screen; a first intermediate relay (5) and a second intermediate relay (6) transmitting high or low temperature instructions from the temperature control instrument (2) to the programmable logic controller (3) respectively; A power switching module for implementing inductor power regulation, including a programmable logic controller (3) controlling the contactor group to switch the output voltage of the self-coupled transformer (4) based on temperature instructions, so that the inductor operates in low-power, medium-power, or high-power mode; An interlocking protection module is configured to mutually exclude the coil power supply circuits of the first contactor (10), the second contactor (12) and the third contactor (8) from being conducted at the same time. A human-computer interaction module is configured to realize human-computer signal interaction, and includes a touch screen in communication connection with the programmable logic controller (3) and configured to generate a pulse start signal to activate the furrow module.

3. A computing device, comprising: The method comprises the steps of: one or more processors; a storage device storing one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors implement the method as claimed in claim 1.

4. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a program, and the program is executed by the processor to implement the method as claimed in claim 1.

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