Control device, method and equipment of corona ozone extraction fan and medium

Abstract

The invention relates to the technical field of ozone fans, in particular to a control device, method and equipment of a corona ozone extraction fan and a medium, the corona ozone extraction fan comprises an air extraction assembly and a corona assembly, the device comprises a frequency converter, a first PLC module and a second PLC module, and the first PLC module, the second PLC module and the corona ozone extraction fan are connected with the frequency converter; wherein the first PLC module is used for detecting a fault alarm signal output by the frequency converter; the frequency converter is used for controlling the air draft assembly to decelerate according to preset deceleration time when the first PLC module detects the fault alarm signal so as to reduce the operation frequency; and the second PLC module is used for stopping receiving the operation feedback signal when the operation frequency of the air draft assembly is lower than a preset frequency value, so that an electrode of the corona assembly stops discharging to ensure that all ozone generated by the corona assembly is pumped away by the air draft assembly, and the problem that the service life of a fan is shortened due to the fact that the ozone damages a motor is solved.

Description

Technical Field

[0001] This application relates to the technical field of ozone blowers, and particularly to a control device, method, equipment and medium for a corona ozone extraction blower. Background Art

[0002] In modern industrial production, products on film production lines usually need to be corona treated, and ozone-containing waste gas will be generated during the treatment process. Therefore, special ozone treatment devices are usually equipped to filter and purify this waste gas.

[0003] When the production line produces single-corona products, according to the process requirements, one of the blowers may stop running. At this time, due to the strong oxidizing property of ozone, components such as the impeller and motor coil in the stopped blower will be exposed to an ozone-containing environment. After long-term accumulation, ozone will corrode the motor coil and bearing of the blower, resulting in motor damage, increasing equipment maintenance costs and downtime. To avoid this damage, the current solution is to turn on both the upper and lower blowers simultaneously regardless of the product being produced, ensuring that the waste gas can continuously pass through the ozone treatment device. However, although this approach can prevent ozone backflow, long-term operation will not only increase power consumption, but also accelerate the wear of the blower, shorten its service life, and increase production costs and the complexity of equipment maintenance.

[0004] In addition, when the blower fails, the generated ozone cannot be evacuated in time, further exacerbating the risk of equipment corrosion and the deterioration of the production environment. Summary of the Invention

[0005] The main purpose of the embodiments of this application is to propose a control device, method, equipment and medium for a corona ozone extraction blower, aiming to timely process ozone to avoid the problem that ozone damages the motor and shortens the service life of the blower.

[0006] To achieve the above object, in the first aspect of the embodiments of this application, a control device for a corona ozone extraction blower is proposed. The corona ozone extraction blower includes an air extraction component and a corona component. The device includes: An inverter, a first PLC module and a second PLC module. The first PLC module, the second PLC module and the corona ozone extraction blower are respectively connected to the inverter; Wherein, the first PLC module is used to detect the fault alarm signal output by the inverter; The inverter is used to control the air extraction component to decelerate according to a preset deceleration time when the first PLC module detects the fault alarm signal, so as to reduce the operating frequency; The second PLC module is used to stop receiving the operation feedback signal when the operation frequency of the exhaust component is lower than the preset frequency value, so as to stop the electrodes of the corona component from discharging, ensuring that the exhaust component exhausts all the ozone generated by the corona component.

[0007] Through the device provided by the first aspect, when a fault occurs in the motor, ozone can be processed in a timely manner, protecting the motor from ozone erosion, ensuring the stable operation of the fan, extending the service life of the fan, reducing the failure rate, maintenance cost and replacement frequency of the equipment, improving the fault troubleshooting efficiency, and thus improving the reliability of the entire system.

[0008] In a possible implementation manner, the device further includes a third PLC module, which is connected to the frequency converter. Wherein, the third PLC module includes a first intermediate relay, which is used to output a start signal when the normally open contact of the first intermediate relay is closed, and send the start signal to the frequency converter, so that the frequency converter controls the corona ozone extraction fan to start.

[0009] In a possible implementation manner, the device further includes a backflow prevention valve, which is connected to the frequency converter and the corona ozone extraction fan. Wherein, the backflow prevention valve further includes a second intermediate relay, and the second intermediate relay is used to close the valve of the backflow prevention valve of the corona ozone extraction fan in the shutdown state, so as to control the ozone generated by the corona ozone extraction fan in the running state from entering the corona ozone extraction fan in the shutdown state.

[0010] In a possible implementation manner, the backflow prevention valve includes a valve position detection module, and the position detection module includes a position sensor, and the position sensor is used to detect whether the valve position of the backflow prevention valve is in the fully open position or the fully closed position, so as to ensure that the backflow prevention valve is in the fully open state or the fully closed state.

[0011] In a possible implementation manner, the position detection module further includes a fault alarm light, which is used to give an alarm when the position sensor detects that the valve position of the backflow prevention valve is neither in the fully open position nor in the fully closed position.

[0012] In a possible implementation manner, the device further includes an interaction module developed based on WINCC, and the interaction module is connected to the frequency converter, and is used to give an alarm after the first PLC module receives the fault alarm signal output by the frequency converter.

[0013] To achieve the above object, a second aspect of the embodiments of the present application proposes a control method for a corona ozone extraction fan, and the method includes: When the first PLC module receives the fault alarm signal output by the frequency converter, it detects that the corona ozone extraction fan fails. At the same time, the exhaust assembly decelerates according to the preset deceleration time of the frequency converter to reduce the operating frequency. When the operating frequency of the exhaust assembly is lower than the preset frequency value, the second PLC module stops receiving the operation feedback signal, and the electrodes of the corona assembly stop discharging to ensure that the exhaust assembly exhausts all the ozone generated by the corona assembly.

[0014] Through the method provided in the second aspect, when the motor fails, ozone can be processed in a timely manner, which can protect the motor from ozone erosion, ensure the stable operation of the fan, extend the service life of the fan, reduce the failure rate, maintenance cost and replacement frequency of the equipment, improve the efficiency of fault troubleshooting, and thus improve the reliability of the entire system.

[0015] In a possible implementation manner, the device further includes an anti-backflow valve disposed on the corona ozone extraction fan. Among them, the anti-backflow valve further includes a second intermediate relay, and the method further includes: Using the second intermediate relay, close the valve of the anti-backflow valve of the corona ozone extraction fan in the shutdown state to control the ozone generated by the corona ozone extraction fan in the running state from entering the corona ozone extraction fan in the shutdown state.

[0016] In a third aspect, an electronic device is provided. The electronic device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the control method of the corona ozone extraction fan as described in any possible implementation manner in the second aspect.

[0017] In a fourth aspect, a computer-readable storage medium is provided. The storage medium stores a computer program, and when the computer program is executed by a processor, it implements the control method of the corona ozone extraction fan as described in any possible implementation manner in the second aspect. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in one or more embodiments of this specification or the prior art, the following will briefly introduce the drawings required for the description of one or more embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in this specification. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a structural block diagram of the control device of the corona ozone extraction fan provided by the embodiment of the present application; Figure 2 It is a structural block diagram of an anti-backflow valve provided by an embodiment of the present application; Figure 3 It is a circuit schematic diagram of a control device for an upper corona ozone extraction fan provided by an embodiment of the present application; Figure 4 It is a circuit schematic diagram of a control device for a lower corona ozone extraction fan provided by an embodiment of the present application; Figure 5 It is a flowchart of a control method for a corona ozone extraction fan provided by an embodiment of the present application; Figure 6 It is a structural block diagram of an electronic device provided by an embodiment of the present application; Reference numerals: upper corona frequency converter INV1, upper corona ozone extraction fan 100, upper corona first PLC module 200, upper corona second PLC module 300, upper corona third PLC module 400, upper corona anti-backflow valve 500, upper corona thermal protection circuit breaker QS1, upper corona first intermediate relay KA1, upper corona second intermediate relay KA2, first fault alarm lamp LED1, second fault alarm lamp LED2, lower corona frequency converter INV2, lower corona ozone extraction fan 600, lower corona first PLC module 700, lower corona second PLC module 800, lower corona third PLC module 900, lower corona anti-backflow valve 1000, lower corona thermal protection circuit breaker QS4, lower corona first intermediate relay KA3, lower corona second intermediate relay KA4, third fault alarm lamp LED3, fourth fault alarm lamp LED4. Detailed implementation manners

[0020] In order to enable those skilled in the art to better understand the technical solutions in this specification, the following will clearly and completely describe the technical solutions in one or more embodiments of this specification in conjunction with the accompanying drawings in one or more embodiments of this specification. Obviously, the described one or more embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on one or more embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this document.

[0021] It should be noted that although the functional modules are divided in the device schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order from the module division in the device or the order in the flowchart. Terms such as "first" and "second" in the specification, claims and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein are for the purpose of describing embodiments of this application only and are not intended to limit this application.

[0023] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] In the treatment process of some industrial waste gases, ozone is used to remove pollutants such as NOX and SOX in flue gas. It is easy to decompose under high concentration and high pressure, but has strong corrosiveness to equipment materials. Especially in equipment such as fans, the insulating materials of motors are easily eroded by ozone, resulting in a decline in insulation performance, and then causing faults such as short circuits and overheating, seriously affecting the service life of the fan. If a fault occurs in the fan equipment and ozone cannot be processed in time, it will damage components such as the equipment motor.

[0025] Based on this, the embodiments of this application provide a control device, method, equipment and medium for a corona ozone extraction fan, aiming to process ozone in time to avoid the problem that ozone damages the motor and shortens the service life of the fan.

[0026] The following further elaborates on the embodiments of this application in conjunction with the accompanying drawings.

[0027] Figure 1 is a structural block diagram of a control device for a corona ozone extraction fan provided by an embodiment of this application.

[0028] In the first aspect, as Figure 1 shown, a control device for a corona ozone extraction fan is provided. The corona ozone extraction fan includes an air extraction component and a corona component. The device includes: An inverter, a first PLC module, and a second PLC module. The first PLC module, the second PLC module, and the corona ozone extraction fan are respectively connected to the inverter. Among them, the first PLC module is used to detect the fault alarm signal output by the inverter. The inverter is used to control the air extraction component to decelerate according to a preset deceleration time when the first PLC module detects the fault alarm signal, so as to reduce the operating frequency. The second PLC module is used to stop receiving the operation feedback signal and stop the electrode of the corona component from discharging when the operating frequency of the air extraction component is lower than a preset frequency value, so as to ensure that the air extraction component extracts all the ozone generated by the corona component.

[0029] It should be noted that the control device of the corona ozone extraction fan includes a frequency converter, a first PLC module and a second PLC module. The first PLC module, the second PLC module and the corona ozone extraction fan are respectively connected to the frequency converter. Among them, the first PLC module is used to detect the fault alarm signal output by the frequency converter. Specifically, the frequency converter also includes a thermal protection circuit breaker. When a fault occurs in the corona ozone extraction fan or the thermal protection circuit breaker trips due to the fault of the corona ozone extraction fan, the input end of the first PLC module is turned on, that is, the fault alarm signal output by the frequency converter is detected. Using the first PLC module to judge whether the corona ozone extraction fan has a fault can customize complex fault detection logic. When the production process or equipment changes, there is no need to modify the hardware on a large scale, and the detection logic can be adjusted by modifying the program, saving time and cost, improving the flexibility and programmability of the control device. Moreover, the PLC has strong anti-interference ability and can accurately detect fault signals under harsh industrial environments such as electromagnetic interference, dust, and humidity, reducing false alarms and missed alarms. It also has a self-diagnosis function, which can monitor its own hardware status in real time and alarm in time when a fault is found.

[0030] It should also be noted that the frequency converter is used to control the air extraction component of the corona ozone extraction fan to decelerate according to the preset deceleration time when the first PLC module detects a fault alarm signal, so as to reduce the operating frequency. Specifically, when the input end of the first PLC module is turned on, that is, when the fault alarm signal output by the frequency converter is detected, the frequency converter will control the motor in the air extraction component of the corona ozone extraction fan to decelerate according to the preset deceleration time, so as to reduce the operating frequency of the motor. In addition, the second PLC module is used to stop receiving the operation feedback signal when the operating frequency of the air extraction component of the corona ozone extraction fan is lower than the preset frequency value, so that the electrode of the corona component of the corona ozone extraction fan stops discharging, so as to ensure that the air extraction component extracts all the ozone generated by the corona component. Specifically, in some embodiments, the preset frequency value can be 25Hz. When the operating frequency of the air extraction component is greater than or equal to 25Hz, the air extraction component is in a normal operating state. When the operating frequency of the air extraction component is less than 25Hz, the air extraction component operates abnormally, the input end of the second PLC module is disconnected, and the operation feedback signal is no longer received, so that the electrode of the corona component of the corona ozone extraction fan stops discharging, that is, stops generating ozone, while the air extraction component is still operating, so as to ensure that the air extraction component extracts all the ozone generated by the corona component, avoiding the problem that the motor is eroded due to the ozone not being processed in time when the corona ozone extraction fan fails.

[0031] Through the device provided by the first aspect, ozone can be processed in time when the motor fails, the motor can be protected from ozone erosion, the stable operation of the fan can be ensured, the service life of the fan can be extended, the failure rate, maintenance cost and replacement frequency of the equipment can be reduced, and the fault troubleshooting efficiency can be improved, thereby improving the reliability of the entire system.

[0032] In a possible implementation, as Figure 1 shown, the device further includes a third PLC module, and the third PLC module is connected to the frequency converter. Among them, the third PLC module includes a first intermediate relay, which is used to output a start signal when the normally open contact of the first intermediate relay is closed, and send the start signal to the frequency converter, so that the frequency converter controls the corona ozone extraction fan to start.

[0033] It should be noted that the third PLC module is used to output a start signal when the normally open contact of the first intermediate relay is closed, and send the start signal to the frequency converter, so that the frequency converter controls the corona ozone extraction fan to start. By controlling the corona ozone extraction fan to start through the frequency converter, the motor can start smoothly, the fan impeller can accelerate slowly, the mechanical impact force can be reduced, and the service life of the motor can be extended.

[0034] In a possible implementation, as Figure 1 shown, the device further includes an anti-backflow valve, and the anti-backflow valve is connected to the frequency converter and the corona ozone extraction fan. Among them, the anti-backflow valve further includes a second intermediate relay, and the second intermediate relay is used to close the valve of the anti-backflow valve of the corona ozone extraction fan in the shutdown state, so as to control the ozone generated by the corona ozone extraction fan in the running state from entering the corona ozone extraction fan in the shutdown state.

[0035] It should be noted that in some embodiments, since the exhaust gas discharged by the two fans contains ozone and a set of ozone treatment devices are shared to filter the exhaust gas, when the production line produces single-corona products, according to the process requirements, one of the fans may stop running. At this time, due to the strong oxidizing property of ozone, components such as the impeller and motor coil in the stopped fan will be exposed to an environment containing ozone. After a long time of accumulation, ozone will corrode the motor coil and bearing of the fan, resulting in motor damage, increasing the equipment maintenance cost and downtime. Based on this, the embodiment of the present application proposes to set an anti-backflow valve on each corona ozone extraction fan. Among them, the anti-backflow valve further includes a second intermediate relay, which is used to close the valve of the anti-backflow valve of the corona ozone extraction fan in the shutdown state, so as to control the ozone generated by the corona ozone extraction fan in the running state from entering the corona ozone extraction fan in the shutdown state. Preventing ozone from flowing back into the corona ozone extraction fan in the shutdown state through the anti-backflow valve not only protects the fan from ozone corrosion, but also reduces the risk of motor damage due to overheating, corrosion or electrical faults, thereby extending the service life of the motor. And when the fan fails, by closing the anti-backflow valve in time, the fan failure rate can be significantly reduced, thereby reducing the repair and replacement costs required due to equipment damage, and reducing the risk of ozone leakage, improving the reliability and safety of the system.

[0036] In a possible implementation, as Figure 2 shown, the anti-backflow valve includes a valve position detection module, and the position detection module includes a position sensor. The position sensor is used to detect whether the valve position of the anti-backflow valve is in the fully open position or the fully closed position to ensure that the anti-backflow valve is in the fully open state or the fully closed state.

[0037] It should be noted that the anti-backflow valve includes a valve position detection module, and the position detection module includes a position sensor. The position sensor can be a position status induction switch, which is used to detect whether the valve position of the anti-backflow valve is in the fully open position or the fully closed position to ensure that the anti-backflow valve is in the fully open state or the fully closed state. When the anti-backflow valve is fully open, it allows fluid to flow unidirectionally, and the fluid can pass through the valve smoothly, reducing fluid resistance and energy consumption, and improving the operating efficiency of the system. When the anti-backflow valve is fully closed, it can completely isolate fluid flow, prevent ozone from flowing back into the corona ozone extraction fan in the shutdown state, protect the fan from ozone corrosion, and can prevent fluid leakage, reducing resource waste and environmental pollution. Therefore, during operation and maintenance, it is necessary to ensure that the anti-backflow valve is in the correct state.

[0038] In a possible implementation, as Figure 2 shown, the position detection module further includes a fault alarm light, which is used to give an alarm when the position sensor detects that the valve position of the anti-backflow valve is neither in the fully open position nor in the fully closed position.

[0039] It should be noted that the position detection module further includes a fault alarm light. When the position sensor detects that the valve position of the anti-backflow valve is neither in the fully open position nor in the fully closed position, it will trigger the fault alarm light to give an alarm, enabling the staff to respond in a timely manner and take measures in a timely manner, helping to prevent the occurrence of faults in the corona ozone extraction fan or prevent ozone leakage, and improving the safety, reliability and efficiency of the control device.

[0040] In a possible implementation, the device further includes an interaction module developed based on WINCC (Windows Control Center). The interaction module is connected to the frequency converter and is used to give an alarm after the first PLC module receives the fault alarm signal output by the frequency converter.

[0041] It should be noted that WINCC is an industrial monitoring software based on the Windows operating system, with a friendly graphical user interface and powerful functions, enabling users to monitor and manage complex industrial processes and equipment in real time. By connecting the interactive module developed based on WINCC to the frequency converter, after the first PLC module receives the fault alarm signal output by the frequency converter, an alarm can be issued to display data, trend charts, and alarm information, and provide flexible data recording and analysis functions, enabling users to monitor and control the corona ozone extraction fan in a timely manner and conduct timely fault troubleshooting and maintenance when the corona ozone extraction fan fails.

[0042] In some embodiments, usually two corona ozone extraction fans are operated simultaneously. As Figure 3 and Figure 4 shown, they are respectively the circuit schematic diagram of the control device of the upper corona ozone extraction fan and the circuit schematic diagram of the control device of the lower corona ozone extraction fan.

[0043] Specifically, as Figure 3 shown, Figure 3It is the circuit schematic diagram of the control device for the upper corona ozone extraction fan provided by the embodiment of the present application. The control device for the upper corona ozone extraction fan includes an upper corona frequency converter INV1, an upper corona ozone extraction fan 100, an upper corona first PLC module 200, an upper corona second PLC module 300, an upper corona third PLC module 400, and an upper corona anti-backflow valve 500. The upper corona ozone extraction fan 100, the upper corona first PLC module 200, the upper corona second PLC module 300, and the upper corona third PLC module 400 are respectively connected to the upper corona frequency converter INV1, and the upper corona anti-backflow valve 500 is connected to the upper corona ozone extraction fan 100 through the upper corona frequency converter INV1. Among them, the upper corona first PLC module 200 is used to detect the fault alarm signal output by the upper corona frequency converter INV1. Specifically, the upper corona frequency converter INV1 further includes an upper corona thermal protection circuit breaker QS1. When a fault occurs in the upper corona ozone extraction fan 100, or when the upper corona thermal protection circuit breaker QS1 trips due to a fault in the upper corona ozone extraction fan 100, the input terminal of the upper corona first PLC module 200 is turned on, that is, the fault alarm signal output by the upper corona frequency converter INV1 is detected; the upper corona frequency converter INV1 is used to control the air extraction component of the upper corona ozone extraction fan 100 to decelerate according to a preset deceleration time when the upper corona first PLC module 200 detects a fault alarm signal, so as to reduce the operating frequency; the upper corona second PLC module 300 is used to stop receiving the operation feedback signal when the operating frequency of the air extraction component of the upper corona ozone extraction fan 100 is lower than the preset frequency value, and stop the electrode of the corona component of the upper corona ozone extraction fan 100 from discharging, so as to ensure that the air extraction component extracts all the ozone generated by the corona component; the upper corona third PLC module 400 is used to output a start signal when the normally open contact of the upper corona first intermediate relay KA1 is closed, and send the start signal to the upper corona frequency converter INV1, so that the upper corona frequency converter INV1 controls the upper corona ozone extraction fan 100 to start; the upper corona anti-backflow valve 500 includes an upper corona second intermediate relay KA2, which is used to close the valve of the anti-backflow valve of the corona ozone extraction fan in the shutdown state, so as to control the ozone generated by the corona ozone extraction fan in the running state from entering the corona ozone extraction fan in the shutdown state. In particular, the upper corona anti-backflow valve 500 further includes a valve position detection module, and the position detection module includes a position sensor, a first fault alarm lamp LED1, and a second fault alarm lamp LED2, which are used to ensure that the upper corona anti-backflow valve 500 is in the fully open state or the fully closed state.

[0044] Specifically, as Figure 4 shown, Figure 4It is the circuit schematic diagram of the control device for the down-corona ozone extraction fan provided by the embodiments of the present application. The control device for the down-corona ozone extraction fan includes a down-corona frequency converter INV2, a down-corona ozone extraction fan 600, a down-corona first PLC module 700, a down-corona second PLC module 800, a down-corona third PLC module 900, and a down-corona anti-backflow valve 1000. The down-corona ozone extraction fan 600, the down-corona first PLC module 700, the down-corona second PLC module 800, and the down-corona third PLC module 900 are respectively connected to the down-corona frequency converter INV2, and the down-corona anti-backflow valve 1000 is connected to the down-corona ozone extraction fan 600 through the down-corona frequency converter INV2. Among them, the down-corona first PLC module 700 is used to detect the fault alarm signal output by the down-corona frequency converter INV2. Specifically, the down-corona frequency converter INV2 further includes a down-corona thermal protection circuit breaker QS4. When the down-corona ozone extraction fan 600 fails, or when the down-corona thermal protection circuit breaker QS4 trips due to the failure of the down-corona ozone extraction fan 600, the input end of the down-corona first PLC module 700 is turned on, that is, the fault alarm signal output by the down-corona frequency converter INV2 is detected; the down-corona frequency converter INV2 is used to control the air extraction component of the down-corona ozone extraction fan 600 to decelerate according to a preset deceleration time when the down-corona first PLC module 700 detects a fault alarm signal, so as to reduce the operating frequency; the down-corona first PLC module 700 is used to stop receiving the operation feedback signal when the operating frequency of the air extraction component of the down-corona ozone extraction fan 600 is lower than the preset frequency value, and stop the electrode of the corona component of the down-corona ozone extraction fan 600 from discharging, so as to ensure that the air extraction component completely extracts the ozone generated by the corona component; the down-corona third PLC module 900 is used to output a start signal when the normally open contact of the down-corona first intermediate relay KA3 is closed, and send the start signal to the down-corona frequency converter INV2, so that the down-corona frequency converter INV2 controls the down-corona ozone extraction fan 600 to start; the down-corona anti-backflow valve 1000 includes a down-corona second intermediate relay KA4, which is used to close the valve of the anti-backflow valve of the corona ozone extraction fan in the shutdown state, so as to control the ozone generated by the corona ozone extraction fan in the running state from entering the corona ozone extraction fan in the shutdown state. In particular, the down-corona anti-backflow valve 1000 further includes a valve position detection module, and the position detection module includes a position sensor, a third fault alarm lamp LED3, and a fourth fault alarm lamp LED4, which are used to ensure that the down-corona anti-backflow valve 1000 is in the fully open state or the fully closed state.

[0045] Figure 5 It is an optional flowchart of the control method for the corona ozone extraction fan provided by the embodiments of the present application. Figure 5 The method in may include but is not limited to steps S1100 to S1200.

[0046] Second aspect, an embodiment of the present application proposes a control method for a corona ozone extraction fan, and the method includes: S1100. When the first PLC module receives a fault alarm signal output by the frequency converter, it is detected that the corona ozone extraction fan has a fault. At the same time, the air extraction component decelerates according to the preset deceleration time of the frequency converter to reduce the operating frequency.

[0047] It should be noted that the control device of the corona ozone extraction fan includes a frequency converter, a first PLC module, and a second PLC module. The first PLC module, the second PLC module, and the corona ozone extraction fan are respectively connected to the frequency converter. Among them, the first PLC module is used to detect the fault alarm signal output by the frequency converter. Specifically, the frequency converter also includes a thermal protection circuit breaker. When the corona ozone extraction fan has a fault, or when the thermal protection circuit breaker trips due to the fault of the corona ozone extraction fan, the input end of the first PLC module is turned on, that is, the fault alarm signal output by the frequency converter is detected. Using the first PLC module to judge whether the corona ozone extraction fan has a fault can customize complex fault detection logic. When the production process or equipment changes, there is no need to modify the hardware on a large scale, and the detection logic can be adjusted by modifying the program, saving time and cost, improving the flexibility and programmability of the control device, and the PLC has strong anti-interference ability and can accurately detect fault signals under harsh industrial environments such as electromagnetic interference, dust, and humidity, reducing false alarms and missed alarms. It also has a self-diagnosis function, can monitor its own hardware status in real time, and alarm in time when a fault is found.

[0048] It should also be noted that the frequency converter is used to control the air extraction component of the corona ozone extraction fan to decelerate according to the preset deceleration time when the first PLC module detects a fault alarm signal, so as to reduce the operating frequency. Specifically, when the input end of the first PLC module is turned on, that is, when the fault alarm signal output by the frequency converter is detected, the frequency converter will control the motor in the air extraction component of the corona ozone extraction fan to decelerate according to the preset deceleration time to reduce the operating frequency of the motor.

[0049] S1200. When the operating frequency of the air extraction component is lower than the preset frequency value, the second PLC module stops receiving the operation feedback signal, and the electrode of the corona component stops discharging to ensure that the air extraction component extracts all the ozone generated by the corona component.

[0050] It should be noted that the second PLC module is used to stop receiving the operation feedback signal when the operation frequency of the air extraction component of the corona ozone extraction fan is lower than the preset frequency value, so as to stop the electrode of the corona component of the corona ozone extraction fan from discharging, ensuring that the air extraction component extracts all the ozone generated by the corona component. Specifically, in some embodiments, the preset frequency value can be 25 Hz. When the operation frequency of the air extraction component is greater than or equal to 25 Hz, the air extraction component is in a normal operation state. When the operation frequency of the air extraction component is less than 25 Hz, the air extraction component operates abnormally. The input end of the second PLC module is disconnected, and the operation feedback signal is no longer received, causing the electrode of the corona component of the corona ozone extraction fan to stop discharging, that is, to stop generating ozone. However, the air extraction component is still operating to ensure that the air extraction component extracts all the ozone generated by the corona component, avoiding the problem that the motor is eroded due to the ozone not being processed in time when the corona ozone extraction fan fails.

[0051] Through the method provided in the second aspect, ozone can be processed in time when the motor fails, protecting the motor from ozone erosion, ensuring the stable operation of the fan, prolonging the service life of the fan, reducing the failure rate, maintenance cost and replacement frequency of the equipment, and improving the efficiency of troubleshooting, thereby improving the reliability of the entire system.

[0052] In a possible implementation manner, the device further includes an anti-backflow valve, which is arranged on the corona ozone extraction fan. Among them, the anti-backflow valve further includes a second intermediate relay, and the method further includes: using the second intermediate relay to close the valve of the anti-backflow valve of the corona ozone extraction fan in the shutdown state, so as to control the ozone generated by the corona ozone extraction fan in the running state from entering the corona ozone extraction fan in the shutdown state.

[0053] It should be noted that in some embodiments, since the exhaust gas discharged by two fans contains ozone and a set of ozone treatment devices is shared to filter the exhaust gas, when the production line produces single-corona products, according to the process requirements, one of the fans may stop running. At this time, due to the strong oxidizing property of ozone, components such as the impeller and motor coil in the stopped fan will be exposed to an environment containing ozone. After a long-term accumulation, ozone will corrode the motor coil and bearing of the fan, resulting in motor damage, increasing the equipment maintenance cost and downtime. Based on this, the embodiments of the present application propose to set an anti-backflow valve on each corona ozone extraction fan. Among them, the anti-backflow valve further includes a second intermediate relay, which is used to close the valve of the anti-backflow valve of the corona ozone extraction fan in the shutdown state, so as to control the ozone generated by the corona ozone extraction fan in the running state from entering the corona ozone extraction fan in the shutdown state. Preventing ozone from flowing back into the corona ozone extraction fan in the shutdown state through the anti-backflow valve not only protects the fan from ozone corrosion, but also reduces the risk of motor damage due to overheating, corrosion or electrical faults, thereby extending the service life of the motor. And when the fan fails, by closing the anti-backflow valve in time, the fan failure rate can be significantly reduced, thereby reducing the repair and replacement costs required due to equipment damage, and also reducing the risk of ozone leakage, improving the reliability and safety of the system.

[0054] The embodiments of the present application also provide an electronic device, such as Figure 6 shown, the electronic device 1400 includes: One or more processors 1410; A memory 1420, on which one or more programs are stored. When the one or more programs are executed by the one or more processors 1410, the one or more processors 1410 implement the control method of the corona ozone extraction fan provided in any embodiment of the present application.

[0055] As a non-transitory network system, the memory 1420 can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory 1420 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory 1420 may optionally include a memory 1420 remotely disposed relative to the processor 1410, and these remote memories 1420 may be connected to the processor 1410 through a network. Examples of the above networks include but are not limited to the Internet, enterprise intranets, local area networks, mobile communication networks, and combinations thereof.

[0056] The memory 1420 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM), etc. The memory 1420 can store an operating system and other application programs. When implementing the technical solutions provided in the embodiments of this specification through software or firmware, the relevant program codes are stored in the memory 1420 and are called by the processor 1410 to execute the methods of the embodiments of this application.

[0057] The processor 1410 can be implemented in the form of a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, etc., and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application.

[0058] In some embodiments, the electronic device further includes: An input / output interface for implementing information input and output; A communication interface for implementing communication interaction between this device and other devices. Communication can be achieved through wired means (such as USB, network cable, etc.) or through wireless means (such as mobile network, WIFI, Bluetooth, etc.); A bus for transmitting information between various components of the device (such as the processor 1410, the memory 1420, the input / output interface, and the communication interface); Among them, the processor 1410, the memory 1420, the input / output interface, and the communication interface can achieve communication connections with each other inside the device through the bus.

[0059] An embodiment of this application further provides a computer-readable storage medium storing computer-executable instructions, and the computer-executable instructions are used to execute the control method of the corona ozone extraction fan provided in any embodiment of this application.

[0060] An embodiment of this application further provides a computer program product, including a computer program or computer instructions. The computer program or computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer program or computer instructions from the computer-readable storage medium, and the processor executes the computer program or computer instructions, so that the computer device executes the control method of the corona ozone extraction fan provided in any embodiment of this application.

[0061] The system architecture and application scenarios described in the embodiments of this application are to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those skilled in the art will know that with the evolution of the system architecture and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are equally applicable to similar technical problems.

[0062] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM), etc.

[0063] Those of ordinary skill in the art can understand that all or some of the steps and systems disclosed above can be implemented as software, firmware, hardware, and their appropriate combinations. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or can be implemented as hardware, or can be implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, a communication medium typically includes computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and can include any information delivery medium.

[0064] The above has illustrated some embodiments of the present application with reference to the accompanying drawings, and thus does not limit the scope of the rights of the present invention. Any modifications, equivalent replacements, and improvements made by those skilled in the art without departing from the scope and essence of the present invention shall be within the scope of the rights of the present application.

[0065] Those of ordinary skill in the art can understand that all or some of the steps, systems, and functional modules / units in the devices disclosed above can be implemented as software, firmware, hardware, and their appropriate combinations.

[0066] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above accompanying drawings are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0067] In addition, in each embodiment of the present application, each functional unit can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0068] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.

[0069] The specific embodiments of this specification have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be executed in a different order from that in the embodiments and still achieve the desired result. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired result. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0070] The preferred embodiments of the embodiments of the present application have been described above with reference to the drawings, which does not limit the scope of rights of the embodiments of the present application. Any modification, equivalent replacement, and improvement made by those skilled in the art without departing from the scope and essence of the embodiments of the present application shall be within the scope of rights of the embodiments of the present application.

Claims

1. A control device for a corona ozone extraction fan, characterized in that, The corona ozone extraction fan includes an air extraction component and a corona component, and the device includes: a frequency converter, a first PLC module, and a second PLC module. The first PLC module, the second PLC module, and the corona ozone extraction fan are respectively connected to the frequency converter; wherein, the first PLC module is used to detect the fault alarm signal output by the frequency converter; the frequency converter is used to control the air extraction component to decelerate according to a preset deceleration time when the first PLC module detects the fault alarm signal, so as to reduce the operating frequency; the second PLC module is used to stop receiving the operation feedback signal when the operating frequency of the air extraction component is lower than a preset frequency value, so that the electrodes of the corona component stop discharging, so as to ensure that the air extraction component extracts all the ozone generated by the corona component.

2. The device according to claim 1, characterized in that The device further includes a third PLC module, and the third PLC module is connected to the frequency converter. Wherein, the third PLC module includes a first intermediate relay, which is used to output a start signal when the normally open contact of the first intermediate relay is closed, and send the start signal to the frequency converter, so that the frequency converter controls the corona ozone extraction fan to start.

3. The device according to claim 1, characterized in that, The device further includes a backflow prevention valve, and the backflow prevention valve is connected to the frequency converter and the corona ozone extraction fan. Wherein, the backflow prevention valve further includes a second intermediate relay, and the second intermediate relay is used to close the valve of the backflow prevention valve of the corona ozone extraction fan in the shutdown state, so as to control the ozone generated by the corona ozone extraction fan in the running state from entering the corona ozone extraction fan in the shutdown state.

4. The device according to claim 3, characterized in that, The backflow prevention valve includes a valve position detection module, and the position detection module includes a position sensor, and the position sensor is used to detect whether the valve position of the backflow prevention valve is in the fully open position or the fully closed position, so as to ensure that the backflow prevention valve is in the fully open state or the fully closed state.

5. The device according to claim 4, characterized in that, The position detection module further includes a fault alarm light, which is used to give an alarm when the position sensor detects that the valve position of the backflow prevention valve is neither in the fully open position nor in the fully closed position.

6. The device according to claim 1, characterized in that, The device further includes an interaction module developed based on WINCC, and the interaction module is connected to the frequency converter, and is used to give an alarm after the first PLC module receives the fault alarm signal output by the frequency converter.

7. A control method for a corona ozone extraction fan, characterized in that, A control device applied to the corona ozone extraction fan according to claim 1, the method includes: When the first PLC module receives the fault alarm signal output by the frequency converter, it is detected that the corona ozone extraction fan has a fault. At the same time, the air extraction component decelerates according to the preset deceleration time of the frequency converter to reduce the operating frequency; When the operating frequency of the air extraction component is lower than the preset frequency value, the second PLC module stops receiving the operation feedback signal, so that the electrodes of the corona component stop discharging, so as to ensure that the air extraction component extracts all the ozone generated by the corona component.

8. The method according to claim 7, wherein The device further includes a backflow prevention valve, which is arranged on the corona ozone extraction fan. Wherein, the backflow prevention valve further includes a second intermediate relay, and the method further includes: Using the second intermediate relay, close the valve of the backflow prevention valve of the corona ozone extraction fan in the shutdown state, so as to control the ozone generated by the corona ozone extraction fan in the running state from entering the corona ozone extraction fan in the shutdown state.

9. An electronic device, characterized in that, The electronic device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the control method of the corona ozone extraction fan according to any one of claims 7 to 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute the control method of the corona ozone extraction fan according to any one of claims 7 to 8.

Images