Industrial smoke filtering control system and control method thereof

Abstract

The invention provides an industrial smoke filtering control system which comprises an air inlet pressure sensor, an air quality sensor, a temperature sensor, a fan PWM controller, a control unit, a man-machine interaction unit and a storage unit, the control unit serves as a core component, and the other components are electrically connected to the control unit. The control unit converts the air inlet pressure into real-time air inlet amount, compares the real-time air inlet amount with preset air inlet amount, adjusts the rotating speed of the fan to enable the real-time air inlet amount to tend to the preset air inlet amount, judges the overload state according to the rotating speed of the fan and the real-time air inlet amount, obtains an alarm state in combination with factors such as filter element working duration, air quality detection and filter element temperature, and gives an alarm. By adjusting the air inlet amount and monitoring and recording the abnormal running state, the technical effects of maintaining the continuous and stable waste gas treatment efficiency of the system and improving the running reliability and safety of the whole machine are achieved, and the stability of the system is obviously improved.

Description

Technical Field

[0001] The invention relates to the field of industrial smoke purification and environmental protection, and in particular to an industrial smoke filtering control system and a control method thereof. Background Art

[0002] With the development of industrialization, the number of factories and industrial processing equipment has reached an unprecedented scale. The waste gas generated by industrial equipment contains a large amount of harmful dust, particles, colloidal particles, smoke and other impurities. Purifying industrial waste has become a top priority for environmental protection. In order to protect the environment and avoid air pollution, smoke purification equipment is often installed before industrial gas is discharged to ensure that the gas discharged into the atmosphere meets the emission standards.

[0003] Industrial smoke purification equipment usually consists of an air inlet pipe, a filter element compartment, a fan compartment, and an air outlet pipe. The filter element is installed in the filter element compartment. The filter element is the core component for filtering industrial smoke. The fan compartment is installed with a fan to provide driving force, so that industrial gas with smoke particles is sucked in from the air inlet pipe, filtered by the filter element in the filter element compartment, and then enters the fan compartment after being converted into clean air, and then discharged through the air outlet pipe. In order to ensure a qualified filtering effect, industrial smoke purification equipment usually has data monitoring functions such as air volume calculation and control, exhaust quality detection, and filter element health status monitoring. The above functions mainly come from sensors installed in various components to collect wind speed, wind pressure, temperature and other information, convert them into electrical signals, and transmit them to the controller. The controller records and analyzes the air volume, exhaust quality, and filter element health status, and sends out reminder signals such as sound, flash, or screen prompts when certain conditions are met.

[0004] Normally, each data monitoring module of industrial smoke purification equipment works independently, and the parameters for measuring the status of the entire filtering equipment are numerous and complex. The data cannot form an organic connection and combination, resulting in a lot of data but insufficient effective redundancy, which reduces the controllability and safety of the equipment. In the calculation of the life of the filter element, fewer factors are considered and the conclusion is not rigorous enough, resulting in the inability to accurately remind the filter element to replace the time, which reduces the use effect of the equipment or the filter element is not fully utilized. Summary of the invention

[0005] The purpose of the present invention is to provide an industrial smoke filtration control system and a control method thereof, which can uniformly record and store the key operating parameters of industrial smoke purification equipment and comprehensively calculate them, and through a more rational and redundant information collection and calculation method, provide users with accurate and effective information and alarm prompts.

[0006] To achieve the above object, the present invention provides an industrial smoke filtration control system, comprising: Inlet pressure sensor, used to obtain the inlet pressure of industrial smoke purification equipment, usually installed at the inlet pipe or the inlet side of the filter element; Fan PWM controller, used to obtain and control the fan speed of industrial smoke purification equipment; The control unit is used to control the operation of the entire control system, receive electrical signals fed back from other components, and perform calculations; A storage unit, used to store data, including the original data of the above-mentioned various sensors, the result data calculated by the control unit, the generated state values, signals, and factory preset parameters and setting parameters; The human-computer interaction unit is used to display device status data, alarm information, and set parameters.

[0007] The control unit is electrically connected to the air inlet pressure sensor, the fan PWM controller, the storage unit, and the human-computer interaction unit respectively.

[0008] When the industrial smoke filtration control system is in operation, the control unit converts the air intake pressure obtained from the air intake pressure sensor into real-time air intake volume, compares it with the set target air intake volume, and adjusts the fan speed to make the real-time air intake volume tend to the target air intake volume. If the fan speed reaches the maximum value and the real-time air intake volume still cannot meet the target air intake volume, it means that the wind resistance is too large after the filter element is blocked, and the air flow rate cannot meet the requirements, then it is judged to enter the overload state, and the overload state is an abnormal state. The control unit generates an overload signal in the overload state, and the overload signal is an abnormal signal. The alarm state is then derived based on the abnormal signal, and the alarm signal generated in the alarm state is sent to the human-computer interaction unit. The human-computer interaction unit displays the relevant operating data, abnormal signals, alarm signals and other alarm information on the screen or in the form of sound. Specifically: The control unit obtains the target air intake volume L from the storage unit. set , rated air volume L0, rated air pressure P0, rated maximum speed of the fan R max , obtain the current inlet pressure P from the inlet pressure sensor t , get the current fan speed R from the fan PWM controller t The control unit converts the air inlet pressure P into t Convert to real-time air intake volume L t :

[0009] Compare the real-time air volume L t and target air volume L set , the comparison process is as follows: If L t <L set , then further compare the current fan speed R t and maximum fan speed R max , if R t <R max , the control unit sends a signal S to the fan PWM controller to increase the fan speedup If R t ≥R max , the system is judged to be in an overload state, and the control unit generates an overload signal S over , and the current time t, current air inlet pressure P t , Current fan speed R t , overload signal S over Combined into a data record D1, stored in the storage unit; If L t >L set , the control unit sends a signal S to the fan PWM controller to reduce the fan speed down ; If L t =L set , the air intake volume has reached the preset air intake volume, and the control unit does not send any signal to the fan PWM controller; When the control unit detects the overload signal S over When the duration of the delay exceeds the preset time threshold T, a warning signal S is generated. alert , and S alert , S over Sent to the human-computer interaction unit.

[0010] Among them, the rated air volume L0, the rated pressure value P0, the maximum speed of the fan R max 、Target air volume L set , and the time threshold T are all preset values ​​stored in the storage unit. Preferably, the rated air volume L0, the rated pressure value P0, and the maximum speed of the fan R max The time threshold T is a constant value preset by the system factory, and the air volume setting value L set It is the variable value set and adjusted through the human-computer interaction unit according to different working conditions.

[0011] The fan PWM controller can be based on the S sent by the control unit up The signal increases the fan speed by ΔL1, or according to S down The signal reduces the fan speed by ΔL2, where ΔL1 and ΔL2 are both positive integer constants.

[0012] Furthermore, the present invention can also record the normal operation time of the system. When the system is operating normally, the filter element is in working state. Therefore, the normal operation time of the system is accumulated and recorded as the cumulative working time of the filter element. When the cumulative working time of the filter element exceeds the rated working time of the filter element, the control unit generates a filter element life limit excess signal and sends an air quality warning signal S quality Send to the human-computer interaction unit, and send the current time t, the accumulated working time of the filter element M, and the rated working time of the filter element M max , Air Quality Warning Signal Squality The filter element is combined into a data record D2 and stored in the storage unit. Preferably, the filter element rated working time M max It is a variable value set and adjusted through the human-machine interaction unit according to the specific specifications of the filter element. When a new filter element is replaced, the accumulated working time M of the filter element can also be reset through the human-machine interaction unit, and the accumulated working time of the filter element can be calculated from 0.

[0013] Furthermore, the present invention can also judge the health status of the filter element by the content of pollutants such as smoke particles in the fan chamber. Specifically, the industrial smoke filtration control system also includes an air quality sensor arranged in the fan chamber, and the air quality sensor is electrically connected to the control unit. The air quality sensor monitors the concentration of pollutants such as dust and VOC (volatile organic compounds) in the air entering the fan chamber after being filtered by the filter element. When the pollutant concentration exceeds the rated emission concentration, the control unit generates an air quality warning signal S quality , and send the air quality warning signal S quality Send it to the human-computer interaction unit, and at the same time send the current time t, pollutant concentration C t , Air Quality Warning Signal S quality The air quality sensor usually includes a dust concentration sensor and a VOCs concentration sensor, which monitor the concentration of dust particles, aerogel and VOC in the gas respectively.

[0014] Furthermore, the filter element has different rated operating temperatures depending on the material. If the temperature in the filter element compartment is too high, the filter element may be damaged or burned. The present invention can also record and monitor the filter element operating temperature and issue an alarm message when the temperature is abnormal. Specifically: the industrial smoke filtration control system also includes a temperature sensor arranged in the filter element compartment. The temperature sensor is electrically connected to the control unit to obtain the filter element compartment temperature. When the temperature sensor detects that the filter element compartment temperature exceeds the rated temperature, the control unit generates an over-temperature warning signal S temp , and the over-temperature warning signal S temp Send to the human-computer interaction unit, and at the same time send the current time t, filter compartment temperature T t , Over-temperature warning signal S temp Combined into a data record D4, stored in the storage unit.

[0015] The present invention also discloses an industrial smoke filtering control method, which is used for industrial smoke purification equipment and comprises the following steps: S1. Obtain setting parameters, which include rated air inlet volume L0, rated air inlet pressure P0, air inlet volume setting value L set , Maximum fan speed R max, the setting parameters are from the factory settings of the industrial smoke purification equipment or the settings of the operator according to the actual working conditions; S2. When the industrial smoke purification equipment is running, obtain the air inlet pressure P t ; S3, according to the rated air volume L0, rated air pressure P0, air pressure P t Calculate the air volume L t ; S4. Compare air intake volume L t and target air volume L set , determine the air intake state; S5, adjust the fan speed according to the air intake state, and when the fan reaches the maximum speed R max If the air volume requirement cannot be met, it is judged to be in overload state and an overload signal S is generated. over ; S6. Determine the warning state according to the abnormal signal, wherein the abnormal signal includes an overload signal S over ; S7, when entering the warning state, a warning signal S is generated alert , abnormal signal and warning signal S alert Send to the human-computer interaction unit; S8. Use the human-computer interaction interface to send abnormal signals and warning signals S alert Converted into an alarm message, which can be a screen display message or a sound prompt, or a screen display message and a sound prompt.

[0016] Furthermore, the abnormal signal in step S6 also includes a filter element life limit excess signal S life , get S life The steps include: obtaining the cumulative working time of the industrial smoke purification equipment and recording it as the cumulative working time of the filter element; comparing the cumulative working time of the filter element with the rated working time of the filter element, and when the cumulative working time exceeds the rated working time of the filter element, generating a filter element life limit signal S life Among them, the rated working time of the filter element can be set by the operator according to the actual working conditions.

[0017] Furthermore, the abnormal signal in step S6 also includes an air quality warning signal S quality , get S quality The steps include: recording the pollutant concentration in the fan chamber of the industrial smoke purification equipment; comparing the pollutant concentration with the rated emission concentration, and generating an air quality warning signal S when the pollutant concentration exceeds the rated emission concentration. quality Among them, the rated emission concentration can come from the factory setting of the industrial smoke purification equipment or the setting of the operator according to the actual working conditions.

[0018] Furthermore, the abnormal signal in step S6 also includes a filter element temperature over-limit signal S temp , get S temp The steps include: recording the filter element working temperature of the industrial smoke purification equipment; comparing the filter element working temperature with the rated temperature, and generating a filter element temperature over-limit signal S when the filter element working temperature exceeds the rated temperature. temp Among them, the rated temperature can come from the factory setting of the industrial smoke purification equipment or the setting of the operator according to the actual working conditions.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up multiple sensors to record and analyze multiple pressures, temperatures, cleanliness and other factors, the reliability and safety of the entire machine operation are better guaranteed.

[0020] 2. When the system is running, the first consideration is to maintain the constant air intake volume, so as to achieve the technical effect of making the efficiency of industrial waste gas treatment continuously stable, which is conducive to the normal operation of the preceding equipment.

[0021] 3. Real-time monitoring and evaluation of the operating parameters of the main parts of the industrial smoke purification equipment. When an abnormality occurs, the operator is notified in time through the human-computer interaction unit. The control logic is complete and the control process is automated.

[0022] 4. When an abnormal state occurs, a certain buffer time is provided before the abnormal signal is issued to prevent misjudgment and false alarm caused by airflow fluctuations, accidental blockages, etc., and improve the robustness of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a block diagram of the industrial waste gas filtration control system of the present invention; Figure 2 It is a schematic flow chart of the industrial waste gas filtration control method of the present invention; Figure 3 It is a schematic diagram of the filter element life detection process of the industrial waste gas filtration control method of the present invention; Figure 4 It is a schematic diagram of the air quality detection process of the industrial waste gas filtration control method of the present invention; Figure 5 It is a schematic diagram of the process flow of detecting the working temperature state of the filter element of the industrial waste gas filtration control method of the present invention. DETAILED DESCRIPTION

[0025] In order to make the above and other features and advantages of the present invention more clear, the present invention is further described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explaining to those skilled in the art and are only exemplary and not restrictive.

[0026] In the following description, many specific details are set forth to provide a thorough understanding of the present invention. However, it is apparent to one of ordinary skill in the art that specific details need not be adopted to practice the present invention. In other cases, well-known steps or operations are not described in detail to avoid obscuring the present invention.

[0027] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are only for illustrative purposes and are not intended to be the only implementation method.

[0028] Reference Figure 1 The first embodiment of the present invention provides an industrial smoke filtration control system, including: an air inlet pressure sensor, an air quality sensor, a temperature sensor, a fan PWM controller, a control unit, a human-computer interaction unit, and a storage unit. The above components have the following features: Figure 1 The electrical connections shown, wherein: The control unit is the core component of the entire control system, used for the operation and control of the control system, and for receiving and sending electrical signals and data to other components. The remaining components are electrically connected to the control unit to form a star topology. The air inlet pressure sensor is installed in the air inlet port of the industrial fume purification equipment or on the air inlet side of the filter element to obtain the air inlet pressure of the industrial fume purification equipment and report the air inlet pressure to the control unit; The air quality sensor is installed in the fan compartment, which is located behind the filter compartment. Industrial waste enters the fan compartment after being filtered by the filter. The air quality sensor is used to monitor the concentration of pollutants such as dust, aerogel and VOC in the air entering the fan compartment after being filtered by the filter, and report the pollutant concentration to the control unit; The temperature sensor is arranged in the filter element compartment, and is used to obtain the temperature of the working environment of the filter element, that is, the temperature of the filter element compartment, in real time, and report the temperature of the filter element compartment to the control unit; The fan PWM controller is set in the fan compartment. On the one hand, the fan PWM controller is electrically connected to the fan of the industrial smoke purification equipment to obtain the fan speed in real time. At the same time, as the controller of the fan, the fan speed can be adjusted by changing the PWM duty cycle (PWM, i.e. Pulse Width Modulation) of the fan. On the other hand, the fan PWM controller reports the fan speed to the control unit; The human-machine interaction unit displays the information, data, and alarm information input by the control unit, and is also used to set various parameters.

[0029] The storage unit is used to store data, including the original data of the above-mentioned sensors, the result data calculated by the control unit, the generated state values, signals, and factory preset parameters and setting parameters.

[0030] When the industrial smoke filtration control system is running, the control unit calculates the real-time air intake volume according to the air intake pressure and compares it with the target air intake volume preset by the control system. If the real-time air intake volume is different from the target air intake volume, the fan speed is adjusted by sending a signal to the fan PWM controller to make the real-time air intake volume reach the set air intake volume; if the fan speed reaches the maximum value and the real-time air intake volume still cannot meet the set air intake volume, it is judged as an overload state and an overload signal S is generated. over .

[0031] The control unit obtains the pollutant concentration in the fan compartment. When the pollutant concentration exceeds the rated emission concentration, it is determined that the air quality exceeds the standard, and the control unit generates an air quality warning signal S quality .

[0032] The control unit obtains the filter compartment temperature. When the filter compartment temperature exceeds the rated temperature, it is determined to be in an over-temperature state, and the control unit generates an over-temperature warning signal S temp .

[0033] The overload signal S over , Filter element life limit signal S life , Air Quality Warning Signal S quality , Over-temperature warning signal S temp All of them are abnormal signals. The control unit derives an alarm state according to the time when the abnormal signal is generated and lasts. If the duration of any abnormal signal exceeds the preset time threshold T, it is determined to have entered the alarm state, and the alarm state, abnormal signal and related data are immediately sent to the human-computer interaction unit. The human-computer interaction unit displays the alarm state, abnormal signal and related data to the user through screen display or sound, and issues a reminder.

[0034] On the basis of the above first embodiment, one or both of the air quality sensor and the temperature sensor may be deleted to obtain another embodiment. In these other embodiments, the control unit no longer obtains the air quality warning signal S corresponding to the air quality sensor and the temperature sensor. quality and over-temperature warning signal S temp , but calculates the alarm status based on other abnormal signals.

[0035] The second embodiment of the present invention discloses an industrial smoke filtration control method for industrial smoke purification equipment, such as Figure 2 As shown, the following steps are included: S1. Get the rated air inlet volume L0, rated air inlet pressure P0, and air inlet volume setting value L set , the fan reaches the maximum speed R max ; S2. When the industrial smoke purification equipment is running, obtain the air inlet pressure P t ; S3, according to the rated air volume L0, rated air pressure P0, air pressure P t Calculate the air volume L t , the calculation formula is:

[0036] S4. Compare air intake volume L t and target air volume L set , determine the air volume status: if L t <L set , then the air intake is insufficient; if L t >L set , the air volume is too large; if L t =L set , then the air intake volume is appropriate; S5. Adjust the fan speed according to the air intake status and determine whether it enters the overload state: if the air intake is too large, reduce the fan speed to reduce the air intake; if the air intake is insufficient, increase the fan speed to increase the air intake, and when the fan reaches the maximum speed R max If the air volume requirement cannot be met, it is judged to be in overload state and an overload signal S is generated. over ; S6. Determine the warning state according to the abnormal signal, wherein the abnormal signal includes an overload signal S over Specifically: if the duration of the abnormal signal exceeds the time threshold T, it is determined to enter the warning state. The time threshold T is a constant time value preset by the industrial smoke purification equipment before leaving the factory; S7, when entering the warning state, the abnormal signal and warning signal S alert Send to the human-computer interaction unit; S8, the human-computer interaction unit sends abnormal signals and warning signals Salert Convert to warning information.

[0037] The abnormal signal described in step S6 is expanded on the basis of the second embodiment to obtain the third embodiment. Specifically, Figure 3 The abnormal signal in step S6 also includes a filter element life limit signal S life , get S life The steps include: S711, obtaining the rated working time of the filter element; S712. Record the cumulative working time of the filter element. It should be noted that the cumulative working time of the normal operation of the industrial smoke purification equipment is usually recorded as the cumulative working time of the filter element; S713, comparing the accumulated working time with the rated working time of the filter element; S714: When the accumulated working time exceeds the rated working time of the filter element, a filter element life limit exceeding signal S is generated. life Among them, the rated working time of the filter element can come from the factory setting of the industrial smoke purification equipment or the setting of the operator according to the actual working conditions.

[0038] Based on the second embodiment, the abnormal signal described in step S6 is expanded to obtain the fourth embodiment. Specifically, Figure 4 The abnormal signal in step S6 also includes an air quality warning signal S quality , get S quality The steps include: S721, obtaining a rated emission concentration; S722. Record the pollutant concentration in the fan compartment of the industrial smoke purification equipment; S723. Compare pollutant concentrations with rated emission concentrations; S724. When the pollutant concentration exceeds the rated emission concentration, an air quality warning signal S is generated. quality Among them, the rated emission concentration can come from the factory setting of the industrial smoke purification equipment or the setting of the operator according to the actual working conditions.

[0039] Based on the second embodiment, the abnormal signal described in step S6 is expanded to obtain the fifth embodiment. Specifically, Figure 5 The abnormal signal in step S6 also includes a filter element temperature over-limit signal S temp , get S temp The steps include: S731, obtaining a rated temperature; S732. Record the filter element operating temperature of industrial smoke purification equipment; S733. Compare the filter element operating temperature with the rated temperature; S734: When the filter element operating temperature exceeds the rated temperature, a filter element temperature over-limit signal S is generated. temp Among them, the rated temperature can come from the factory setting of the industrial smoke purification equipment or the setting of the operator according to the actual working conditions.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An industrial smoke filtration control system, used for controlling industrial smoke purification equipment, characterized in that: include: Inlet air pressure sensor, used to obtain the inlet air pressure of industrial smoke purification equipment; Fan PWM controller, used to obtain and control the fan speed; A control unit, used to control the operation and control of the industrial smoke filtration control system, and to receive and send electrical signals and data; A storage unit for storing data, information and parameters; Human-computer interaction unit, used to display data, information and set parameters; The control unit is electrically connected to the air inlet pressure sensor, the fan PWM controller, the storage unit, and the human-computer interaction unit respectively; The air inlet pressure sensor reports the air inlet pressure to the control unit, and the fan PWM controller reports the fan speed to the control unit; The control unit converts the calculated air intake pressure into real-time air intake volume, and compares it with the preset target air intake volume. It sends a signal to the fan PWM controller to adjust the fan speed so that the real-time air intake volume tends to the preset target air intake volume. The overload state is determined based on the fan speed and the real-time air intake volume. When the overload state is reached, the control unit generates an overload signal. The control unit derives an alarm state according to the abnormal signal, and generates an alarm signal when entering the alarm state, wherein the abnormal signal includes an overload signal; The control unit stores the abnormal signal in the storage unit, sends the alarm signal to the human-machine interaction unit, and the human-machine interaction unit displays the alarm information.

2. An industrial smoke filtration control system according to claim 1, characterized in that: The control unit converts the air intake pressure into the real-time air intake volume according to the calculation formula: Where L t is the real-time air intake volume, P t is the air inlet pressure, L0 is the preset rated air inlet volume, and P0 is the preset rated air inlet pressure.

3. An industrial smoke filtration control system according to claim 1, characterized in that: The process of making the real-time air intake volume tend to the preset target air intake volume is: If L t <L set And R t <R max , the control unit sends a signal to the fan PWM controller to increase the fan speed; If L t >L set , the control unit sends a signal to the fan PWM controller to reduce the fan speed; If L t =L set , the control unit does not send any signal to the fan PWM controller. Among them, L t is the real-time air intake volume, L set is the preset target air volume, R t is the fan speed, R max The preset maximum fan speed.

4. An industrial smoke filtration control system according to claim 1, characterized in that: The control unit determines the overload state according to the fan speed and real-time air intake volume: t <L set And R t ≥R max , it is judged to enter the overload state, where L t is the real-time air intake volume, L set is the preset target air volume, R t is the fan speed, R max The preset maximum fan speed.

5. An industrial smoke filtration control system according to claim 1, characterized in that: The control unit can also record the cumulative working time of the filter element of the industrial smoke purification equipment. When the cumulative working time of the filter element exceeds the preset rated working time of the filter element, the control unit generates a filter element life exceeding limit signal, and the abnormal signal includes the filter element life exceeding limit signal.

6. An industrial smoke filtration control system according to claim 1, characterized in that: It also includes an air quality sensor, which is electrically connected to the control unit and is used to obtain the pollutant concentration in the filtered air and report it to the control unit. When the pollutant concentration exceeds the preset rated emission concentration, the control unit generates an air quality warning signal, and the abnormal signal includes the air quality warning signal.

7. An industrial smoke filtration control system according to claim 1, characterized in that: It also includes a temperature sensor, which is electrically connected to the control unit and is used to obtain the filter cartridge compartment temperature of the industrial smoke purification equipment. When the filter cartridge compartment temperature exceeds the rated temperature, the control unit generates an over-temperature warning signal, and the abnormal signal includes an over-temperature warning signal.

8. An industrial smoke filtration control method for industrial smoke purification equipment, characterized in that: Includes steps: S1. Get the rated air inlet volume L0, rated air inlet pressure P0, and air inlet volume setting value L set , the fan reaches the maximum speed R max ; S2. When the industrial smoke purification equipment is running, obtain the air inlet pressure P t ; S3. Calculate the air intake volume L t , the calculation formula is: Where L t is the air volume, P t is the air inlet pressure, L0 is the rated air inlet volume, and P0 is the rated air inlet pressure; S4. Compare air intake volume L t and air volume setting value L set , determine the air volume status: if L t <L set , then the air intake is insufficient; if L t >L set , the air volume is too large; if L t =L set , then the air intake volume is appropriate; S5. Adjust the fan speed according to the air intake status and determine whether it enters the overload state: if the air intake is too large, reduce the fan speed to reduce the air intake; if the air intake is insufficient, increase the fan speed to increase the air intake, and when the fan reaches the maximum speed R max If the air volume requirement cannot be met, it is judged to be in overload state and an overload signal S is generated. over ; S6. Determine the warning state according to the abnormal signal, wherein the abnormal signal includes an overload signal S over ; S7, when entering the warning state, a warning signal S is generated alert , the abnormal signal and the warning signal S alert Send to the human-computer interaction unit; S8, the abnormal signal and the warning signal S alert Convert to warning information.

9. The industrial smoke filtration control method according to claim 8, characterized in that: The condition for determining the warning state according to the abnormal signal in step S6 is: if the duration of the abnormal signal exceeds a time threshold T, it is determined to enter the warning state, where T is a preset time value.

10. The industrial smoke filtration control method according to claim 8, characterized in that: The abnormal signal in step S6 also includes a filter element life limit signal S life , Air Quality Warning Signal S quality , Temperature over limit signal S temp One or more of the three.

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