Control method and device for hot air system of wet-type electric dust collector

Abstract

The application provides a control method and device for a hot air system of a wet-type electric dust collector. The method comprises the following steps: acquiring a current flue gas pressure of a flue closest to an insulation box in the wet-type electric dust collector at a current time point and a current flue gas humidity of the insulation box at the current time point; acquiring a plurality of historical flue gas pressures and a plurality of historical hot air pressures of the flue and the insulation box within a preset time before the current time point; determining a target hot air pressure required by the insulation box at the current time point according to the current flue gas pressure and the plurality of historical flue gas pressures; determining a target hot air temperature required by the insulation box at the current time point according to the target hot air pressure, the plurality of historical hot air pressures and the current flue gas humidity; and adjusting the rotating speed of a fan and the power of an electric heater in the hot air system, so that the hot air pressure of the insulation box reaches the target hot air pressure and the hot air temperature reaches the target hot air temperature. Therefore, the power consumption of the hot air system is reduced and resources are saved by using the control method.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric dust precipitators, and particularly to a control method and device for a hot air system of a wet electric dust precipitator. BACKGROUND

[0002] Since the implementation of ultra-low emission reconstruction in coal-fired power plants, many power plants have added wet electric dust precipitators after dry electric dust precipitators and desulfurization towers. The wet electric dust precipitator mainly processes wet flue gas with high water content or even saturation and low dust concentration after the desulfurization tower, and has good combined removal effect on sulfuric acid mist, fine dust, heavy metals and other pollutants.

[0003] However, since the insulation box in the wet electric dust precipitator is in an environment close to saturation humidity during normal operation, it is necessary to blow dry hot air by a hot air purging system to prevent abnormal operation of the insulator in the insulation box. In the related art, the air volume, air pressure and temperature design margin of the hot air purging system are large, and the power consumption of the operation is high. Therefore, how to reduce the power consumption of the hot air purging system and find an energy-saving method is crucial. SUMMARY

[0004] The present application provides a control method and device for a hot air system of a wet electric dust precipitator, aiming to at least solve one of the technical problems in the related art to some extent.

[0005] An embodiment of the present application provides a control method for a hot air system of a wet electric dust precipitator, the method comprising:

[0006] obtaining a current flue gas pressure of a flue closest to the insulation box in the wet electric dust precipitator at a current time point, and obtaining a current flue gas humidity of the insulation box at the current time point;

[0007] obtaining a plurality of historical flue gas pressures of the flue within a preset time before the current time point, and obtaining a plurality of historical hot air pressures of the insulation box within a preset time before the current time;

[0008] determining a target hot air pressure required by the insulation box at the current time point according to the current flue gas pressure and the plurality of historical flue gas pressures;

[0009] determining a target hot air temperature required by the insulation box at the current time point according to the target hot air pressure, the plurality of historical hot air pressures and the current flue gas humidity;

[0010] adjusting the rotating speed of the fan in the hot air system so that the hot air pressure of the insulation box reaches the target hot air pressure;

[0011] adjusting power of an electric heater in the hot air system so that the hot air temperature of the insulation box reaches the target hot air temperature.

[0012] In some embodiments, the determining the target hot air pressure required by the insulation box at the current time point according to the current flue gas pressure and the plurality of historical flue gas pressures comprises:

[0013] determining a flue gas pressure average value according to the current flue gas pressure and the plurality of historical flue gas pressures;

[0014] fuzzifying the flue gas pressure average value to obtain a flue gas pressure fuzzy grade of the flue gas pressure average value;

[0015] determining a hot air pressure fuzzy grade of the hot air pressure required by the insulation box according to the flue gas pressure fuzzy grade;

[0016] defuzzifying the hot air pressure fuzzy grade to obtain the target hot air pressure required by the insulation box at the current time point.

[0017] In some embodiments, the determining the target hot air temperature required by the insulation box at the current time point according to the target hot air pressure, the plurality of historical hot air pressures and the current flue gas humidity comprises:

[0018] determining a hot air pressure average value according to the target hot air pressure and the plurality of historical hot air pressures;

[0019] fuzzifying the hot air pressure average value and the current flue gas humidity respectively to obtain a hot air pressure fuzzy grade of the hot air pressure average value and a flue gas humidity fuzzy grade of the current flue gas humidity;

[0020] determining a hot air temperature fuzzy grade of the hot air temperature required by the insulation box according to the hot air pressure fuzzy grade and the flue gas humidity fuzzy grade;

[0021] defuzzifying the hot air temperature fuzzy grade to obtain the target hot air temperature required by the insulation box.

[0022] In some embodiments, the determining the hot air pressure fuzzy grade of the hot air pressure required by the insulation box according to the flue gas pressure fuzzy grade comprises:

[0023] obtaining the hot air pressure fuzzy grade matched with the flue gas pressure fuzzy grade from a preset first fuzzy rule table, wherein the hot air pressure fuzzy grade is used to represent the fuzzy grade of the hot air pressure required by the insulation box.

[0024] In some embodiments, determining the hot air temperature fuzzy level required for the hot air temperature of the insulation box according to the hot air pressure fuzzy level and the flue gas humidity fuzzy level includes:

[0025] The hot air temperature fuzzy level that matches the hot air pressure fuzzy level and the flue gas humidity fuzzy level is obtained from a preset second fuzzy rule table, wherein the hot air temperature fuzzy level is used to represent the fuzzy level of the hot air temperature required by the insulation box.

[0026] The control method of the hot air system of the wet electrostatic precipitator in the embodiment of the present application, during the operation of the wet electrostatic precipitator, combines the current flue gas pressure of the flue closest to the insulating box of the wet electrostatic precipitator at the current time point and the current flue gas humidity of the insulating box at the current time point to accurately determine the target hot air pressure and target hot air temperature required by the insulating box at the current time point, and controls the hot air system of the wet electrostatic precipitator based on the target hot air pressure and target hot air temperature required by the insulating box. While ensuring that the hot air generated by the hot air system meets the requirements of the insulating box, the power consumption of the hot air system is reduced, saving resources.

[0027] Another embodiment of the present application provides a control device for a hot air system of a wet electrostatic precipitator, the device comprising:

[0028] A first acquisition module is used to obtain the current flue gas pressure of the flue closest to the insulation box in the wet electrostatic precipitator at a current time point, and obtain the current flue gas humidity of the insulation box at the current time point;

[0029] A second acquisition module is used to acquire a plurality of historical flue gas pressures of the flue within a preset time before a current time point, and to acquire a plurality of historical hot air pressures of the insulation box within a preset time before the current time point;

[0030] a first determining module, configured to determine a target hot air pressure required by the insulation box at the current time point based on the current flue gas pressure and the multiple historical flue gas pressures;

[0031] a second determining module, configured to determine a target hot air temperature required by the insulation box at the current time point based on the target hot air pressure, the multiple historical hot air pressures, and the current flue gas humidity;

[0032] a first adjustment module, configured to adjust the rotation speed of the fan in the hot air system so that the hot air pressure of the insulation box reaches the target hot air pressure;

[0033] The second adjustment module is used to adjust the power of the electric heater in the hot air system so that the hot air temperature of the insulation box reaches the target hot air temperature.

[0034] In some embodiments, the first determining module comprises:

[0035] a first determining unit, configured to determine a flue gas pressure average value according to the current flue gas pressure and the plurality of historical flue gas pressures;

[0036] a first processing unit, configured to perform fuzzification processing on the flue gas pressure average value to obtain a flue gas pressure fuzzy grade of the flue gas pressure average value;

[0037] a second determining unit, configured to determine a hot blast pressure fuzzy grade of a required hot blast pressure of the insulation tank according to the flue gas pressure fuzzy grade;

[0038] a second processing unit, configured to perform defuzzification processing on the hot blast pressure fuzzy grade to obtain a target hot blast pressure required by the insulation tank at the current time point.

[0039] In some embodiments, the second determining module comprises:

[0040] a third determining unit, configured to determine a hot blast pressure average value according to the target hot blast pressure and the plurality of historical hot blast pressures;

[0041] a third processing unit, configured to perform fuzzification processing on the hot blast pressure average value and the current flue gas humidity respectively to obtain a hot blast pressure fuzzy grade of the hot blast pressure average value and a flue gas humidity fuzzy grade of the current flue gas humidity;

[0042] a fourth determining unit, configured to determine a hot blast temperature fuzzy grade of a required hot blast temperature of the insulation tank according to the hot blast pressure fuzzy grade and the flue gas humidity fuzzy grade;

[0043] a fourth processing unit, configured to perform defuzzification processing on the hot blast temperature fuzzy grade to obtain a target hot blast temperature required by the insulation tank.

[0044] In some embodiments, the second determining unit is specifically configured to:

[0045] obtain, from a preset first fuzzy rule table, the hot blast pressure fuzzy grade matched with the flue gas pressure fuzzy grade, wherein the hot blast pressure fuzzy grade is used to represent a fuzzy grade of the required hot blast pressure of the insulation tank.

[0046] In some embodiments, the fourth determining unit is specifically configured to:

[0047] From the preset second fuzzy rule table, a hot air temperature fuzzy level matching the hot air pressure fuzzy level and the flue gas humidity fuzzy level is obtained, wherein the hot air temperature fuzzy level is used to represent a fuzzy level of a required hot air temperature of the insulation box.

[0048] The control device of the hot air system of the wet-type electric dust collector according to the embodiments of the present application can accurately determine the target hot air pressure and the target hot air temperature required by the insulation box at the current time point in combination with the current flue gas pressure of the flue closest to the insulation box of the wet-type electric dust collector at the current time point and the current flue gas humidity of the insulation box at the current time point, and control the hot air system of the wet-type electric dust collector based on the target hot air pressure and the target hot air temperature required by the insulation box, so that the hot air generated by the hot air system meets the requirement of the insulation box, and the power consumption of the hot air system is reduced, and resources are saved.

[0049] In another aspect, the embodiments of the present application provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the control method of the hot air system of the wet-type electric dust collector when executing the program.

[0050] In another aspect, the embodiments of the present application provide a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the control method of the hot air system of the wet-type electric dust collector. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 is a flowchart of the control method of the hot air system of the wet-type electric dust collector according to the embodiments of the present application;

[0052] Figure 2 is a flowchart of another control method of the hot air system of the wet-type electric dust collector according to the embodiments of the present application;

[0053] Figure 3 is a flowchart of another control method of the hot air system of the wet-type electric dust collector according to the embodiments of the present application;

[0054] Figure 4 is a structural schematic diagram of the control device of the hot air system of the wet-type electric dust collector according to the embodiments of the present application;

[0055] Figure 5 is a structural schematic diagram of another control device of the hot air system of the wet-type electric dust collector according to the embodiments of the present application;

[0056] Figure 6 is a structural block diagram of the electronic device according to the embodiments of the present application. DETAILED DESCRIPTION

[0057] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0058] Figure 1 This is a flow chart illustrating a method for controlling a hot air system of a wet electrostatic precipitator provided in an embodiment of the present application. It should be noted that the method for controlling a hot air system of a wet electrostatic precipitator provided in this embodiment is executed by a control device for the hot air system of the wet electrostatic precipitator. This control device can be implemented using software and / or hardware, and can be a fuzzy controller. This fuzzy controller can be configured on the wet electrostatic precipitator to control the hot air system of the wet electrostatic precipitator.

[0059] like Figure 1 As shown, the method includes:

[0060] Step 101: obtaining the current flue gas pressure of the flue closest to the insulation box in the wet electrostatic precipitator at the current time point, and obtaining the current flue gas humidity of the insulation box at the current time point.

[0061] Among them, the wet electrostatic precipitator is connected to the inside of the insulation box.

[0062] The hot air system in this embodiment is used to blow dry hot air into the insulation box.

[0063] The current flue gas pressure is obtained by a pressure sensor arranged in the flue gas collecting the flue gas pressure at the current collection moment.

[0064] It is understood that the flue closest to the insulation box can be the inlet flue of the wet electrostatic precipitator or the outlet flue of the wet electrostatic precipitator. Therefore, in some embodiments, the current flue gas pressure of the inlet flue closest to the insulation box of the wet electrostatic precipitator at the current time point can be obtained. In other embodiments, the current flue gas pressure of the outlet flue closest to the insulation box of the wet electrostatic precipitator at the current time point can be obtained.

[0065] In one embodiment of the present application, the current flue gas humidity is obtained by a humidity sensor disposed in the insulation box collecting the flue gas humidity at the current collection moment.

[0066] Step 102: obtaining a plurality of historical flue gas pressures within a preset time period before a current time point, and obtaining a plurality of historical hot air pressures within a preset time period before a current time point.

[0067] The preset time is a pre-set time, for example, 5 seconds, or 10 seconds, etc. In practical applications, the value of the preset time can be set according to actual needs, and this embodiment does not make any specific limitation on this.

[0068] In one embodiment of the present application, a plurality of historical flue gas pressures within a preset time period before the current time point may be obtained from a flue gas pressure database.

[0069] In one embodiment of the present application, a plurality of historical hot air pressures of the insulation box within a preset time before the current time may be obtained from a hot air pressure database.

[0070] Step 103 : determining the target hot air pressure required by the insulation box at the current time point based on the current flue gas pressure and multiple historical flue gas pressures.

[0071] In one embodiment of the present application, the current flue gas pressure and multiple historical flue gas pressures can be input into a fuzzy controller, so that the current flue gas pressure and multiple historical flue gas pressures can be processed by the fuzzy controller to obtain the target hot air pressure required by the insulation box at the current time point.

[0072] In an exemplary embodiment, the current flue gas pressure and a plurality of historical flue gas pressures may be input into a preset second calculation function to determine the target hot air pressure required by the insulation box at the current time point through the second calculation function.

[0073] It should be noted that a possible implementation method of determining the target hot air pressure required by the insulation box at the current time point based on the current flue gas pressure and multiple historical flue gas pressures will be described in subsequent embodiments.

[0074] Step 104 : determining the target hot air temperature required by the insulation box at the current time point based on the target hot air pressure, multiple historical hot air pressures, and the current flue gas humidity.

[0075] In one embodiment of the present application, the target hot air pressure, multiple historical hot air pressures and current flue gas humidity can be input into a fuzzy controller, so that the target hot air pressure, multiple historical hot air pressures and current flue gas humidity can be processed by the fuzzy controller to obtain the target hot air temperature required by the insulation box at the current time point.

[0076] In an exemplary embodiment, the target hot air pressure, multiple historical hot air pressures, and current flue gas humidity may be input into a preset second calculation function to obtain the target hot air temperature required by the insulation box at the current time point.

[0077] It should be noted that other implementation methods for determining the target hot air temperature required by the insulation box at the current time point based on the target hot air pressure, multiple historical hot air pressures and current flue gas humidity will be described in subsequent embodiments.

[0078] Step 105 : adjusting the rotation speed of the fan in the hot air system so that the hot air pressure in the insulation box reaches the target hot air pressure.

[0079] In one embodiment of the present application, after determining the target hot air pressure required by the insulation box at the current time point, the target hot air pressure can be transmitted to the DCS (Distributed Control System) of the wet electrostatic precipitator through communication or hard wiring, and then transmitted to the control cabinet of the hot air system via the DCS of the wet electrostatic precipitator. The control cabinet of the hot air system adjusts the speed of the fan by adjusting the frequency converter of the fan so that the hot air pressure of the insulation box reaches the target hot air pressure.

[0080] Step 106 : Adjust the power of the electric heater in the hot air system so that the hot air temperature of the insulation box reaches the target hot air temperature.

[0081] In one embodiment of the present application, after determining the target hot air temperature required for the insulation box at the current time point, the target hot air temperature can be transmitted to the DCS (Distributed Control System) of the wet electrostatic precipitator through communication or hard wiring, and then transmitted to the control cabinet of the hot air system via the DCS of the wet electrostatic precipitator. The control cabinet of the hot air system adjusts the power of the electric heater so that the hot air temperature of the insulation box reaches the target hot air temperature.

[0082] The control method of the hot air system of the wet electrostatic precipitator in the embodiment of the present application, during the operation of the wet electrostatic precipitator, combines the current flue gas pressure of the flue closest to the insulating box of the wet electrostatic precipitator at the current time point and the current flue gas humidity of the insulating box at the current time point to accurately determine the target hot air pressure and target hot air temperature required by the insulating box at the current time point, and controls the hot air system of the wet electrostatic precipitator based on the target hot air pressure and target hot air temperature required by the insulating box. While ensuring that the hot air generated by the hot air system meets the requirements of the insulating box, the power consumption of the hot air system is reduced, saving resources.

[0083] Figure 2This is a flow chart of another method for controlling the hot air system of a wet electrostatic precipitator provided in an embodiment of the present application. Figure 2 As shown, in step 103, a feasible implementation method for determining the target hot air pressure required by the insulation box at the current time point based on the current flue gas pressure and multiple historical flue gas pressures is:

[0084] Step 201 : determining an average flue gas pressure based on the current flue gas pressure and multiple historical flue gas pressures.

[0085] As an example, the current flue gas pressure and a plurality of historical flue gas pressures may be averaged to obtain an average flue gas pressure.

[0086] Specifically, the obtained current flue gas pressure and multiple historical flue gas pressures may be summed, and the obtained sum may be divided by the total of the current flue gas pressure and the multiple historical flue gas pressures to obtain an average flue gas pressure.

[0087] Step 202 : performing fuzzy processing on the average value of the flue gas pressure to obtain a flue gas pressure fuzzy level of the average value of the flue gas pressure.

[0088] As an example, the average flue gas pressure can be fuzzified into five levels. For example, the average flue gas pressure is represented by PY, and the five fuzzy levels are: very low pressure PYVS, low pressure PYS, medium pressure PYM, high pressure PYB, and very high pressure PYVB.

[0089] Step 203 : determining the hot air pressure fuzzy level of the hot air pressure required by the insulation box according to the flue gas pressure fuzzy level.

[0090] In one embodiment of the present application, a hot air pressure fuzzy level that matches the flue gas pressure fuzzy level can be obtained from a preset first fuzzy rule table, wherein the hot air pressure fuzzy level is used to represent the fuzzy level of hot air pressure required by the insulation box.

[0091] The preset first fuzzy rule table is a table of preset rules corresponding to the fuzzy level of the average value of the flue gas pressure and the fuzzy level of the hot air pressure of the insulation box, as shown in Table 1 below.

[0092] Average flue gas pressure PYVS PYS PYM PYB PYVB Hot air pressure of insulation box PVS PS PM PB PVB

[0093] Table 1

[0094] In one embodiment of the present application, the design principle of the first fuzzy rule is: the higher the average flue gas pressure, the higher the hot air pressure of the insulation box.

[0095] As shown in Table 1, the hot air pressure of the insulation box is represented by P, and the 5 fuzzy levels of the average value PY of the flue gas pressure correspond to the 5 fuzzy levels of the hot air pressure P of the insulation box, respectively. Specifically, the fuzzy level PYVS of the average value PY of the flue gas pressure corresponds to the fuzzy level PVS of the hot air pressure P of the insulation box, the fuzzy level PYS of the average value PY of the flue gas pressure corresponds to the fuzzy level PS of the hot air pressure P of the insulation box, the fuzzy level PYM of the average value PY of the flue gas pressure corresponds to the fuzzy level PM of the hot air pressure P of the insulation box, the fuzzy level PYB of the average value PY of the flue gas pressure corresponds to the fuzzy level PB of the hot air pressure P of the insulation box, and the fuzzy level PYVB of the average value PY of the flue gas pressure corresponds to the fuzzy level PVB of the hot air pressure P of the insulation box.

[0096] In step 204, the hot air pressure fuzzy level is defuzzified to obtain the target hot air pressure required by the insulation box at the current time point.

[0097] In an embodiment of the present application, since the hot air pressure fuzzy level of the insulation box is obtained according to the first fuzzy rule table, the hot air pressure fuzzy level of the insulation box can be defuzzified to obtain the specific target hot air pressure required by the insulation box at the current time point.

[0098] In the defuzzification process, the maximum average method can be used.

[0099] In the present example embodiment, by averaging the current flue gas pressure and the plurality of historical flue gas pressures, the inaccuracy of the target hot air pressure determined based on a single flue gas pressure due to large fluctuations in the flue gas pressure can be reduced, and the accuracy of the determined target hot air pressure can be improved.

[0100] Figure 3 FIG. 2 is a flowchart of another control method of a hot air system of a wet-type electric dust collector according to an embodiment of the present application. As shown in FIG. 2, in step 104, the target hot air temperature required by the insulation box at the current time point is determined according to the target hot air pressure, the plurality of historical hot air pressures, and the current flue gas humidity. Figure 3

[0101] In step 301, the average value of the hot air pressure is determined according to the target hot air pressure and the plurality of historical hot air pressures.

[0102] As an example, the target hot air pressure and the plurality of historical hot air pressures can be averaged to obtain the average value of the hot air pressure.

[0103] Specifically, the obtained target hot air pressure and the plurality of historical hot air pressures can be summed, and the sum is divided by the total number of the target hot air pressure and the plurality of historical hot air pressures to obtain the average value of the hot air pressure. ​

[0104] Step 302 , fuzzy processing is performed on the average hot air pressure and the current flue gas humidity, respectively, to obtain a hot air pressure fuzzy level of the average hot air pressure and a flue gas humidity fuzzy level of the current flue gas humidity.

[0105] As an example, the average hot air pressure value can be fuzzified into five levels. For example, the average hot air pressure value is represented by PZ, and the five fuzzy levels are: very low pressure PZVS, low pressure PZS, medium pressure PZM, high pressure PZB, and very high pressure PZVB.

[0106] As an example, the current smoke humidity can be fuzzified into five levels. For example, the current smoke humidity is represented by E, and the five fuzzy levels are: very low humidity EVS, low humidity ES, medium humidity EM, high humidity EB, and very high humidity EVB.

[0107] Step 303 : determining the hot air temperature fuzzy level required by the insulation box according to the hot air pressure fuzzy level and the flue gas humidity fuzzy level.

[0108] In one embodiment of the present application, a hot air temperature fuzzy level that matches the hot air pressure fuzzy level and the flue gas humidity fuzzy level can be obtained from a preset second fuzzy rule table, wherein the hot air temperature fuzzy level is used to represent the fuzzy level of the hot air temperature required by the insulation box.

[0109] Among them, the preset second fuzzy rule table is a table of pre-set rules corresponding to the hot air pressure fuzzy level, the flue gas humidity fuzzy level and the insulation box hot air temperature fuzzy level, as shown in Table 2 below.

[0110] PZVS PZS PZM PZB PZVB EVS TM TS TS TVS TVS ES TB TM TS TS TVS EM TB TB TM TS TS EB TVB TB TB TM TS EVB TVB TVB TB TB TM

[0111] Table 2

[0112] In one embodiment of the present application, the design principle of the second fuzzy rule table is: the higher the average hot air pressure, the lower the hot air temperature of the insulation box; the greater the smoke humidity, the higher the hot air temperature of the insulation box.

[0113] Table 2 shows that the insulation box hot air temperature is represented by T. The insulation box hot air temperature fuzzy levels can be summarized into five levels: Very Low Temperature (TVS), Low Temperature (TS), Medium Temperature (TM), High Temperature (TB), and Very High Temperature (TVB). In Table 2, you can find any insulation box hot air temperature fuzzy level that matches the hot air pressure fuzzy level and the flue gas humidity fuzzy level.

[0114] Step 304 : Defuzzify the hot air temperature fuzzy level to obtain the target hot air temperature required by the insulation box.

[0115] In an embodiment of the present application, since the insulation box hot air temperature fuzzy grade is obtained according to the second fuzzy rule table, the insulation box hot air temperature fuzzy grade can be defuzzified to obtain a specific target hot air temperature required by the insulation box at the current time point.

[0116] The defuzzification processing can adopt a maximum average method.

[0117] In the present example embodiment, by averaging the target hot air pressure and the plurality of historical hot air pressures, the occurrence of inaccurate target hot air temperature determined based on a single hot air pressure due to large fluctuations in the hot air pressure can be reduced, and the accuracy of the determined target hot air temperature can be improved.

[0118] Another aspect of the present application provides a control device of a hot air system of a wet-type electric dust collector. Figure 4 is a structural schematic diagram of a control device of a hot air system of a wet-type electric dust collector provided by an embodiment of the present application. As shown in Figure 4 The control device 40 includes a first acquisition module 41, a second acquisition module 42, a first determination module 43, a second determination module 44, a first adjustment module 45, and a second adjustment module 46. Wherein:

[0119] The first acquisition module 41 is configured to acquire a current flue gas pressure of a flue closest to the insulation box of the wet-type electric dust collector at a current time point, and acquire a current flue gas humidity of the insulation box at the current time point.

[0120] The second acquisition module 42 is configured to acquire a plurality of historical flue gas pressures of the flue within a preset time before the current time point, and acquire a plurality of historical hot air pressures of the insulation box within a preset time before the current time.

[0121] The first determination module 43 is configured to determine a target hot air pressure required by the insulation box at the current time point according to the current flue gas pressure and the plurality of historical flue gas pressures.

[0122] The second determination module 44 is configured to determine a target hot air temperature required by the insulation box at the current time point according to the target hot air pressure, the plurality of historical hot air pressures, and the current flue gas humidity.

[0123] The first adjustment module 45 is configured to adjust the rotating speed of the fan in the hot air system so that the hot air pressure of the insulation box reaches the target hot air pressure.

[0124] The second adjustment module 46 is configured to adjust the power of the electric heater in the hot air system so that the hot air temperature of the insulation box reaches the target hot air temperature.

[0125] It should be noted that the aforementioned embodiment of the method for controlling the hot air system of the wet-type electric dust collector is also applicable to the control device of the hot air system of the wet-type electric dust collector, and thus will not be described herein.

[0126] The control device of the hot air system of the wet-type electric dust collector according to the embodiment of the present application can accurately determine the target hot air pressure and the target hot air temperature required by the insulation box at the current time point in combination with the current flue gas pressure of the flue closest to the insulation box of the wet-type electric dust collector at the current time point and the current flue gas humidity of the insulation box at the current time point, and control the hot air system of the wet-type electric dust collector based on the target hot air pressure and the target hot air temperature required by the insulation box, so as to reduce the power consumption of the hot air system and save resources while ensuring that the hot air generated by the hot air system meets the requirements of the insulation box.

[0127] Figure 5 FIG. 2 is a structural schematic diagram of another control device of a hot air system of a wet-type electric dust collector according to an embodiment of the present application. As shown in FIG. 2, the control device 50 comprises a first obtaining module 51, a second obtaining module 52, a first determining module 53, a second determining module 54, a first adjusting module 55, and a second adjusting module 56. Figure 5 The first determining module 53 comprises a first determining unit 531, a first processing unit 532, a second determining unit 533, and a second processing unit 534. The second determining module 54 comprises a third determining unit 541, a third processing unit 542, a fourth determining unit 543, and a fourth processing unit 544.

[0128] It should be noted that the descriptions of the first obtaining module 51, the second obtaining module 52, the first determining module 53, the second determining module 54, the first adjusting module 55, and the second adjusting module 56 can be referred to the descriptions of the first obtaining module 41, the second obtaining module 42, the first determining module 43, the second determining module 44, the first adjusting module 45, and the second adjusting module 46 in the above embodiment, and thus will not be described herein. Figure 4

[0129] In an embodiment of the present application, the first determining module 53 comprises:

[0130] The first determining unit 531 is configured to determine the average value of the flue gas pressure according to the current flue gas pressure and the plurality of historical flue gas pressures.

[0131] The first processing unit 532 is configured to perform fuzzy processing on the average value of the flue gas pressure to obtain the flue gas pressure fuzzy level of the average value of the flue gas pressure.

[0132] ​The second determining unit 533 is configured to determine the hot air pressure fuzzy level of the hot air pressure required by the insulation box according to the flue gas pressure fuzzy level.

[0133] The second processing unit 534 is configured to perform defuzzification processing on the hot air pressure fuzzy level to obtain a target hot air pressure required by the insulation box at a current time point.

[0134] The second determining unit 533 is specifically configured to:

[0135] A hot air pressure fuzzy level that matches the flue gas pressure fuzzy level is obtained from a preset first fuzzy rule table, wherein the hot air pressure fuzzy level is used to represent the fuzzy level of hot air pressure required by the insulation box.

[0136] In one embodiment of the present application, the second determining module 54 includes:

[0137] The third determining unit 541 is configured to determine an average hot air pressure according to the target hot air pressure and a plurality of historical hot air pressures.

[0138] The third processing unit 542 is configured to perform fuzzy processing on the average hot air pressure and the current flue gas humidity, respectively, to obtain a hot air pressure fuzzy level of the average hot air pressure and a flue gas humidity fuzzy level of the current flue gas humidity.

[0139] The fourth determining unit 543 is configured to determine a hot air temperature fuzzy level of the hot air temperature required by the insulation box according to the hot air pressure fuzzy level and the flue gas humidity fuzzy level.

[0140] The fourth processing unit 544 is configured to perform defuzzification processing on the hot air temperature fuzzy level to obtain a target hot air temperature required by the insulation box.

[0141] The fourth determining unit is specifically configured to:

[0142] From the preset second fuzzy rule table, a hot air temperature fuzzy level matching the hot air pressure fuzzy level and the flue gas humidity fuzzy level is obtained, wherein the hot air temperature fuzzy level is used to represent the fuzzy level of the hot air temperature required by the insulation box.

[0143] According to an embodiment of the present application, the present application also provides an electronic device and a readable storage medium.

[0144] Figure 6 It is a structural block diagram of an electronic device according to an embodiment of the present application.

[0145] like Figure 6 As shown, the electronic device 600 includes: a memory 610, a processor 620, and computer instructions stored in the memory 610 and executable on the processor 620.

[0146] When the processor 620 executes the instructions, the control method of the hot air system of the wet electrostatic precipitator provided in the above embodiment is implemented.

[0147] Furthermore, the electronic device 600 further includes:

[0148] The communication interface 630 is used for communication between the memory 610 and the processor 620 .

[0149] The memory 610 is used to store computer instructions that can be executed on the processor 620 .

[0150] The memory 610 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0151] The processor 620 is configured to implement the control method for the hot air system of the wet electrostatic precipitator of the above embodiment when executing a program.

[0152] If the memory 610, processor 620, and communication interface 630 are implemented independently, the communication interface 630, memory 610, and processor 620 can be connected to each other via a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0153] Optionally, in a specific implementation, if the memory 610, the processor 620 and the communication interface 630 are integrated on a chip, the memory 610, the processor 620 and the communication interface 630 can communicate with each other through an internal interface.

[0154] The processor 620 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0155] Another embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for controlling a hot air system of a wet electrostatic precipitator as described in any of the embodiments of the present application.

[0156] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0157] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0158] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0159] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for controlling a hot air system of a wet electrostatic precipitator, characterized in that: The wet electrostatic precipitator is in communication with the interior of the insulation box, the hot air system is used to blow dry hot air into the insulation box, and the method includes: Obtaining a current flue gas pressure of a flue closest to the insulating box in the wet electrostatic precipitator at a current time point, and obtaining a current flue gas humidity of the insulating box at the current time point; Acquire multiple historical flue gas pressures of the flue within a preset time before the current time point, and acquire multiple historical hot air pressures of the insulation box within a preset time before the current time point; determining an average flue gas pressure according to the current flue gas pressure and the plurality of historical flue gas pressures; Performing fuzzy processing on the average value of the flue gas pressure to obtain a flue gas pressure fuzzy level of the average value of the flue gas pressure; Obtaining the hot air pressure fuzzy level that matches the flue gas pressure fuzzy level from a preset first fuzzy rule table, wherein the hot air pressure fuzzy level is used to represent the fuzzy level of hot air pressure required by the insulation box; performing defuzzification processing on the hot air pressure fuzzy level to obtain the target hot air pressure required by the insulation box at the current time point; determining an average hot air pressure according to the target hot air pressure and the plurality of historical hot air pressures; performing fuzzy processing on the hot air pressure average value and the current flue gas humidity respectively to obtain a hot air pressure fuzzy level of the hot air pressure average value and a flue gas humidity fuzzy level of the current flue gas humidity; Obtaining, from a preset second fuzzy rule table, a hot air temperature fuzzy level that matches the hot air pressure fuzzy level and the flue gas humidity fuzzy level, wherein the hot air temperature fuzzy level is used to represent the fuzzy level of the hot air temperature required by the insulation box; Defuzzifying the hot air temperature fuzzy level to obtain a target hot air temperature required by the insulation box; Adjusting the speed of the fan in the hot air system so that the hot air pressure of the insulation box reaches the target hot air pressure; The power of the electric heater in the hot air system is adjusted so that the hot air temperature of the insulation box reaches the target hot air temperature.

2. A control device for a hot air system of a wet electrostatic precipitator, characterized in that: The wet electrostatic precipitator is connected to the interior of the insulation box, and the hot air system is used to blow dry hot air into the insulation box. The device includes: A first acquisition module is used to obtain the current flue gas pressure of the flue closest to the insulation box in the wet electrostatic precipitator at a current time point, and obtain the current flue gas humidity of the insulation box at the current time point; A second acquisition module is used to acquire a plurality of historical flue gas pressures of the flue within a preset time before the current time point, and to acquire a plurality of historical hot air pressures of the insulation box within a preset time before the current time point; a first determining module, configured to determine a target hot air pressure required by the insulation box at the current time point based on the current flue gas pressure and the multiple historical flue gas pressures; a second determining module, configured to determine a target hot air temperature required by the insulation box at the current time point based on the target hot air pressure, the multiple historical hot air pressures, and the current flue gas humidity; a first adjustment module, configured to adjust the rotation speed of the fan in the hot air system so that the hot air pressure of the insulation box reaches the target hot air pressure; a second adjustment module, configured to adjust the power of the electric heater in the hot air system so that the hot air temperature of the insulation box reaches the target hot air temperature; The first determining module includes: a first determining unit, configured to determine an average flue gas pressure according to the current flue gas pressure and the plurality of historical flue gas pressures; a first processing unit, configured to perform fuzzy processing on the average value of the flue gas pressure to obtain a flue gas pressure fuzzy level of the average value of the flue gas pressure; a second determining unit, configured to obtain, from a preset first fuzzy rule table, the hot air pressure fuzzy level that matches the flue gas pressure fuzzy level, wherein the hot air pressure fuzzy level is used to represent the fuzzy level of hot air pressure required by the insulation box; a second processing unit, configured to perform defuzzification processing on the hot air pressure fuzzy level to obtain a target hot air pressure required by the insulation box at the current time point; The second determining module includes: a third determining unit, configured to determine an average hot air pressure according to the target hot air pressure and the plurality of historical hot air pressures; a third processing unit, configured to perform fuzzy processing on the hot air pressure average value and the current flue gas humidity, respectively, to obtain a hot air pressure fuzzy level of the hot air pressure average value and a flue gas humidity fuzzy level of the current flue gas humidity; a fourth determining unit, configured to obtain, from a preset second fuzzy rule table, the hot air temperature fuzzy level that matches the hot air pressure fuzzy level and the flue gas humidity fuzzy level, wherein the hot air temperature fuzzy level is used to represent the fuzzy level of the hot air temperature required by the insulation box; The fourth processing unit is configured to perform defuzzification processing on the hot air temperature fuzzy level to obtain a target hot air temperature required by the insulation box.

3. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for controlling the hot air system of the wet electrostatic precipitator according to claim 1 when executing the program.

4. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method for controlling a hot air system of a wet electrostatic precipitator according to claim 1 is implemented.

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