Intelligent flow guiding and stirring control method and system for electro-catalytic reactor

Abstract

The application relates to the technical field of water treatment, and discloses an intelligent flow guide and stirring control method and system of an electro-catalytic reactor. The method comprises the following steps: collecting a COD concentration value, comparing the COD concentration value with a three-level threshold value to obtain a load grade, extracting a target flow guide plate angle and a stirring speed from a three-dimensional lookup table, driving a hydraulic cylinder to adjust the flow guide plate and feeding back and compensating through an angle sensor, and optimizing parameters according to a performance deviation after starting the stirring speed and updating the lookup table. The application improves the adaptability and treatment efficiency of the electro-catalytic reactor to the quality fluctuation of coal chemical industry wastewater, and reduces the energy consumption of unit chemical oxygen demand removal.

Description

Technical Field

[0001] This application relates to the field of water treatment technology, and in particular to an intelligent flow guiding and stirring control method and system for an electrocatalytic reactor. Background Technology

[0002] The coal chemical industry generates large amounts of high-salt, high-organic-content wastewater during coal gasification, liquefaction, and coking processes. This wastewater is characterized by high chemical oxygen demand (COD) concentrations, high salinity, drastic quality fluctuations, and difficulty in treatment. Electrocatalytic oxidation technology, through electrochemical reactions on the electrode surface, oxidizes and degrades organic pollutants in the wastewater, and has become an important method for the deep treatment of coal chemical wastewater. Existing electrocatalytic reactors typically use fixed-structure guide plates to guide wastewater flow across the electrode surface. The guide plate installation angle is fixed in a preset position by bolts and cannot be adjusted. The stirring impeller is driven by a constant-speed motor to maintain a fixed rotation speed. During operation, operators manually sample and test the wastewater to monitor the COD concentration. Based on the test results, they determine whether the treatment parameters need to be adjusted. Adjustment requires stopping the reactor, removing the bolts, manually changing the guide plate angle, and then restarting the reactor after adjustment.

[0003] The existing technology has the following shortcomings: First, the fixed angle of the guide plate cannot be dynamically adjusted according to changes in water quality. When the chemical oxygen demand (COD) concentration suddenly increases from a normal load to a high load, the fixed-angle guide plate cannot enhance the impact intensity of the wastewater on the electrode surface, leading to insufficient mass transfer and pollutant accumulation in local areas, while excessively high current density in other areas causes peroxidation side reactions, resulting in a significant increase in energy consumption. Second, the constant speed operation of the agitator blades cannot be coordinated with the angle of the guide plate. When the guide plate angle is manually adjusted, the stirring intensity does not change synchronously, and the mismatch between the guide plate and stirring parameters leads to a disordered flow field distribution, affecting the efficiency of the electrochemical reaction. Third, there is a lack of a real-time feedback mechanism from the angle sensor. After manually adjusting the guide plate, the operator cannot confirm the actual adjusted angle position and can only indirectly verify the effect through the next test result. There is a control blind zone of more than 30 minutes from the completion of the adjustment to the confirmation of the effect. Fourth, the frequency of manual sampling and testing is low and there is a lag, which cannot capture rapid fluctuations in wastewater quality in time. When the COD concentration rises rapidly, waiting until the test results are available to adjust the parameters often results in the effluent exceeding the standard. Summary of the Invention

[0004] This application provides an intelligent flow guiding and stirring control method and system for an electrocatalytic reactor, which solves the problems in the prior art such as fixed flow guide plate angle that cannot be dynamically adjusted, lack of sensor feedback leading to blind adjustment, mismatch between flow guiding and stirring parameters, and control lag that cannot cope with rapid fluctuations in water quality. It improves the adaptability and treatment efficiency of the electrocatalytic reactor to fluctuations in the water quality of coal chemical wastewater, and reduces the energy consumption per unit of chemical oxygen demand removal.

[0005] In a first aspect, this application provides an intelligent flow guiding and stirring control method for an electrocatalytic reactor, the intelligent flow guiding and stirring control method for the electrocatalytic reactor comprising:

[0006] Step S1: Collect the chemical oxygen demand (COD) concentration value, compare the COD concentration value with the three-level threshold to obtain the load level;

[0007] Step S2: Extract the target guide vane angle and target agitator blade speed from the three-dimensional control parameter lookup table according to the load level;

[0008] Step S3: Drive the hydraulic cylinder push rod to adjust the guide plate to the target guide plate angle, detect the actual angle of the guide plate by the angle sensor, calculate the angle deviation, and when the angle deviation is greater than 2°, perform compensation push to obtain a positioning confirmation signal;

[0009] Step S4: Based on the arrival confirmation signal, start the speed adjustment of the stirring blade, drive the hydraulic motor to adjust the stirring speed to the target stirring blade speed, calculate the performance deviation between the actual COD removal rate and the expected value in the lookup table, and when the performance deviation exceeds the preset range, adjust the target stirring blade speed and update the three-dimensional control parameter lookup table.

[0010] Secondly, this application provides an intelligent flow guiding and stirring control system for an electrocatalytic reactor, the intelligent flow guiding and stirring control system for the electrocatalytic reactor comprising:

[0011] The comparison module is used to collect the chemical oxygen demand (COD) concentration value, compare the COD concentration value with the three-level threshold, and obtain the load level.

[0012] The extraction module is used to extract the target guide vane angle and the target agitator blade speed from the three-dimensional control parameter lookup table according to the load level;

[0013] The drive module is used to drive the hydraulic cylinder push rod to adjust the guide plate to the target guide plate angle. It detects the actual angle of the guide plate through the angle sensor, calculates the angle deviation, and performs compensation push when the angle deviation is greater than 2° to obtain a positioning confirmation signal.

[0014] The calculation module is used to start the speed adjustment of the stirring blade according to the arrival confirmation signal, drive the hydraulic motor to adjust the stirring speed to the target stirring blade speed, calculate the performance deviation between the actual COD removal rate and the expected value in the lookup table, and adjust the target stirring blade speed and update the three-dimensional control parameter lookup table when the performance deviation exceeds the preset range.

[0015] Thirdly, an intelligent flow guiding and stirring control device for an electrocatalytic reactor is provided, comprising: a memory and at least one processor, wherein the memory stores instructions; the at least one processor invokes the instructions in the memory to cause the intelligent flow guiding and stirring control device for the electrocatalytic reactor to execute the aforementioned intelligent flow guiding and stirring control method for the electrocatalytic reactor.

[0016] Fourthly, a computer-readable storage medium is provided, wherein instructions are stored therein, which, when executed on a computer, cause the computer to perform the above-described intelligent flow guiding and stirring control method for an electrocatalytic reactor.

[0017] The technical solution provided in this application establishes a graded triggering control decision-making mechanism by collecting the chemical oxygen demand (COD) concentration value and comparing it with three-level thresholds to obtain the load level. Compared with the passive response method of relying on manual sampling and testing in the prior art, online real-time monitoring combined with multi-level threshold judgment can timely capture the step-like changes in the water quality of coal chemical wastewater, accurately classifying the water quality status into four levels: low load, medium load, high load, and ultra-high load, providing a clear decision-making basis for subsequent parameter adjustment. Based on the load level, the target guide vane angle and target agitator blade speed are extracted from the three-dimensional control parameter lookup table. The quantitative mapping relationship between control parameters and water quality load is realized through the lookup table supported by pre-established experimental data, avoiding the blind adjustment of parameters based on experience in the prior art, and ensuring the optimal matching of guide vane angle and agitation intensity under different load conditions. The hydraulic cylinder push rod adjusts the guide vane to the target angle, and the angle deviation is calculated by detecting the actual angle using an angle sensor. When the angle deviation is greater than 2 degrees, compensation is performed to obtain a confirmation signal. This closed-loop feedback mechanism solves the problem in existing technologies where the actual position cannot be confirmed after manually adjusting the guide vane. Real-time detection and multiple compensations ensure that the guide vane accurately reaches the target angle, eliminating the influence of mechanical execution deviation on the flow field distribution. At the same time, the hierarchical compensation logic balances control accuracy and energy consumption loss, avoiding frequent hydraulic system operations caused by unlimited compensation. Based on the confirmation signal, the stirring blade speed is adjusted and the hydraulic motor is driven to adjust the stirring speed to the target value. The performance deviation between the actual COD removal rate and the expected value in the lookup table is calculated. When the performance deviation exceeds the preset range, the target stirring speed is adjusted and the three-dimensional control parameter lookup table is updated. This performance closed-loop optimization mechanism realizes the coordinated linkage of the guide vane and stirring actuators, solving the problem of flow field turbulence caused by the non-synchronous change of stirring parameters after guide vane adjustment in existing technologies. At the same time, the dynamic correction of the lookup table data through performance deviation feedback gives the control system self-learning capabilities, enabling it to gradually adapt to the long-term changes in the actual treatment characteristics of coal chemical wastewater.

[0018] The feedforward prediction algorithm based on the COD concentration change rate calculates the concentration change rate between adjacent sampling times and predicts the concentration trend for future periods by combining the current concentration value. When the change rate exceeds a preset threshold, it triggers control parameter adjustment in advance. Compared with the feedback control based purely on the current concentration value in existing technologies, the feedforward prediction mechanism advances the control response time by 10 minutes, eliminating the inherent lag between water quality changes and control actions, and effectively avoiding the risk of effluent exceeding standards due to rapidly deteriorating wastewater quality. The angle deviation graded compensation algorithm sets two deviation thresholds of 2 degrees and 5 degrees, and adopts differentiated processing strategies for different degrees of execution deviation. When the deviation is less than 2 degrees, it is determined to be in place and locked directly. Between 2 and 5 degrees, a limited number of compensations are performed. When the deviation is greater than 5 degrees or compensation fails, a fault alarm is triggered. This graded strategy ensures control accuracy while avoiding mechanical oscillation and energy waste caused by overcompensation. It is particularly suitable for the scaling friction fluctuations caused by the high salt and high viscosity characteristics of coal chemical wastewater. Compared with the simple open-loop control or undifferentiated continuous compensation in existing technologies, the graded compensation algorithm takes into account both control performance and system stability. The three-dimensional lookup table dynamic update algorithm calculates the performance deviation between the actual operating effect and the expected value, and uses the adjusted control parameters and the corresponding actual removal rate as new operating condition data points to interpolate and update the lookup table. This allows the lookup table to gradually evolve from static offline experimental data into a dynamic knowledge base containing actual operating experience. Compared with the fixed parameter control method in the existing technology, this self-learning mechanism can compensate for the impact of long-term factors such as electrode passivation and changes in the degree of scaling on the treatment effect, and improve the control stability and adaptability of the system throughout its entire life cycle. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of an embodiment of the intelligent flow guidance and stirring control method for the electrocatalytic reactor in this application.

[0021] Figure 2 This is a schematic diagram of the load level determination process based on three threshold levels in an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the angle deviation graded compensation control strategy in the embodiments of this application. Detailed Implementation

[0023] This application provides an intelligent flow guiding and stirring control method and system for an electrocatalytic reactor. The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data used can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" or "having" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] For ease of understanding, the specific process of the embodiments of this application is described below. Please refer to [link / reference]. Figure 1 One embodiment of the intelligent flow guidance and stirring control method for the electrocatalytic reactor in this application includes:

[0025] Step S1: Collect the chemical oxygen demand (COD) concentration value, compare the COD concentration value with the three-level threshold to obtain the load level;

[0026] The online COD analyzer is installed on the inlet pipe of the electrocatalytic reactor and continuously monitors the chemical oxygen demand (COD) concentration in the wastewater using ultraviolet absorption. The instrument automatically collects COD concentration values ​​every 10 minutes. After particulate matter is removed by a filter, the wastewater sample enters a quartz flow cell. 254 nm wavelength ultraviolet light penetrates the sample solution, and a photodetector receives the transmitted light intensity and converts it into an electrical signal. The COD concentration value is calculated according to Lambert-Beer's law. The collected concentration data is transmitted to the control unit and stored as a time series, with each record containing a timestamp and the corresponding concentration value.

[0027] The control unit compares the real-time COD concentration values ​​with three preset thresholds sequentially. The first threshold is set at 900 mg / L, representing the normal treatment load of coal chemical wastewater; the second threshold is set at 1200 mg / L, representing moderate pollution conditions; and the third threshold is set at 1500 mg / L, representing high pollution conditions. The comparison logic determines the load based on the numerical values: a COD concentration less than 900 mg / L is considered a low-load condition; a concentration between 900 and 1200 mg / L is considered a medium-load condition; a concentration between 1200 and 1500 mg / L is considered a high-load condition; and a concentration exceeding 1500 mg / L is considered an ultra-high-load condition. The determination result is output as the load level.

[0028] The control unit synchronously calculates the trend of COD concentration change. It extracts the current COD(t) concentration value from the time series and the COD(t-10) concentration value from 10 minutes ago, calculates the difference, and divides it by the 10-minute time interval to obtain the concentration change rate. When the change rate exceeds 10 mg / L / min and the current concentration value exceeds 800 mg / L, it is determined that the wastewater quality is showing a rapid deterioration trend. The control unit then activates the pre-adjusted control flag, triggering the feedforward control mechanism.

[0029] Step S2: Extract the target guide vane angle and target agitator blade speed from the three-dimensional control parameter lookup table according to the load level;

[0030] The three-dimensional control parameter lookup table was pre-established through offline experiments and stored in the control unit. Four COD concentration points (700, 1000, 1300, and 1600 mg / L), four guide vane angle points (30°, 40°, 50°, and 60°), and four stirring speed points (300, 450, 600, and 800 rpm) were selected to form 64 operating conditions. The COD removal rate and energy consumption data for each operating condition were recorded. The lookup table was stored as a three-dimensional array, with the first dimension representing the COD concentration, the second dimension representing the guide vane angle, and the third dimension representing the stirring speed. Table 1 shows the three-dimensional control parameter lookup table as follows:

[0031] Table 1 - Three-Dimensional Control Parameter Lookup Table

[0032] Serial Number COD concentration (mg / L) Deflector angle (°) Stirring speed (rpm) Expected COD removal rate (%) Energy consumption (kWh / kg COD) 1 700 30 300 65 8.5 2 700 30 450 67 10.1 3 700 30 600 69 12.3 4 700 30 800 70 15.2 5 700 40 300 66 9.2 6 700 40 450 68 10.8 7 700 40 600 71 13.1 8 700 40 800 72 15.8 9 700 50 300 67 9.8 10 700 50 450 70 11.5 11 700 50 600 73 13.8 12 700 50 800 74 16.5 13 700 60 300 68 10.5 14 700 60 450 71 12.2 15 700 60 600 74 14.5 16 700 60 800 75 17.2 17 1000 30 300 62 9.2 18 1000 30 450 65 10.8 19 1000 30 600 67 13.2 20 1000 30 800 68 16.1 21 1000 40 300 64 9.8 22 1000 40 450 68 11.5 23 1000 40 600 71 14.0 24 1000 40 800 73 16.8 25 1000 50 300 66 10.5 26 1000 50 450 72 12.2 27 1000 50 600 75 14.8 28 1000 50 800 77 17.5 29 1000 60 300 68 12.2 30 1000 60 450 74 12.9 31 1000 60 600 78 15.5 32 1000 60 800 80 18.2 33 1300 30 300 58 10.8 34 1300 30 450 62 12.5 35 1300 30 600 65 15.0 36 1300 30 800 67 17.8 37 1300 40 300 61 11.5 38 1300 40 450 66 13.2 39 1300 40 600 70 15.8 40 1300 40 800 72 18.5 41 1300 50 300 64 12.2 42 1300 50 450 70 13.9 43 1300 50 600 75 16.5 44 1300 50 800 78 19.2 45 1300 60 300 67 12.9 46 1300 60 450 74 14.6 47 1300 60 600 80 17.2 48 1300 60 800 83 19.9 49 1600 30 300 52 12.5 50 1600 30 450 58 14.2 51 1600 30 600 62 16.8 52 1600 30 800 65 19.5 53 1600 40 300 56 13.2 54 1600 40 450 63 14.9 55 1600 40 600 68 17.5 56 1600 40 800 71 20.2 57 1600 50 300 60 13.9 58 1600 50 450 68 15.6 59 1600 50 600 74 18.2 60 1600 50 800 78 20.9 61 1600 60 300 64 14.6 62 1600 60 450 73 16.3 63 1600 60 600 80 18.9 64 1600 60 800 85 21.6

[0033] The control unit retrieves target parameters from a lookup table based on the load level. For low load conditions, it retrieves an angle of 30 degrees and a speed of 300 rpm; for medium load conditions, it retrieves an angle of 45 degrees and a speed of 450 rpm; for high load conditions, it retrieves an angle of 55 degrees and a speed of 600 rpm; and for very high load conditions, it retrieves an angle of 60 degrees and a speed of 800 rpm. When the pre-adjustment control flag is activated, the control unit predicts the concentration 10 minutes later based on the current concentration value and rate of change. It then compares the predicted concentration with a threshold to obtain the predicted load level and retrieves control parameters based on the predicted level.

[0034] Step S3: Drive the hydraulic cylinder push rod to adjust the guide plate to the target guide plate angle, detect the actual angle of the guide plate through the angle sensor, calculate the angle deviation, and when the angle deviation is greater than 2°, perform compensation push to obtain a positioning confirmation signal;

[0035] Specifically, the guide vane is mounted inside the reactor via a pivot hinge, and the hydraulic cylinder piston rod is connected to the guide vane via a ball joint. The control unit calculates the extension amount of the hydraulic cylinder push rod based on the target guide vane angle, using a geometric relationship based on the distance of 500 mm from the pivot center to the hydraulic cylinder hinge point and the 15-degree angle between the hydraulic cylinder axis and the normal to the guide vane. The hydraulic station pressurizes the hydraulic oil to 10 MPa, driving the hydraulic cylinder piston rod to extend at a speed of 20 mm / s, causing the guide vane to rotate accordingly.

[0036] An angle sensor is installed on the outer end of the shaft, using a potentiometer principle to output a 4-20 mA current signal corresponding to an angle range of 0-90 degrees. The control unit collects the angle signal every 0.5 seconds, converts it into the actual angle of the guide vane, and calculates the difference between the target angle and the actual angle to obtain the angle deviation. When the absolute value of the deviation is less than or equal to 2 degrees, the hydraulic cylinder stops and locks its position, generating a confirmation signal for reaching the target position. When the absolute value of the deviation is between 2 and 5 degrees, the control unit recalculates the compensation extension amount based on the deviation and drives the hydraulic cylinder to continue pushing, performing a maximum of 3 compensations. When the deviation exceeds 5 degrees or still exceeds 2 degrees after 3 compensations, a fault alarm flag is triggered. The control unit records the cumulative number of compensations per day; when it exceeds 10 times, a hydraulic system warning flag is triggered.

[0037] Step S4: Based on the arrival confirmation signal, start the speed adjustment of the stirring blade, drive the hydraulic motor to adjust the stirring speed to the target stirring blade speed, calculate the performance deviation between the actual COD removal rate and the expected value in the lookup table, and when the performance deviation exceeds the preset range, adjust the target stirring blade speed and update the three-dimensional control parameter lookup table.

[0038] Upon receiving a position confirmation signal, the control unit initiates the stirring speed regulation. The stirring shaft is connected to the output shaft of a hydraulic motor with a displacement of 50 ml / rpm and a volumetric efficiency of 0.92. The control unit calculates the required hydraulic oil flow rate based on the target stirring speed; the flow rate is equal to the speed multiplied by the displacement divided by the volumetric efficiency. A proportional throttle valve regulates the flow rate. The control unit calculates the target opening degree as the ratio of the required flow rate to the maximum flow rate of 50 liters / minute, and converts the opening degree into a current signal to control the valve spool position.

[0039] A Hall effect speed sensor detects the agitator shaft speed. The control unit collects pulse signals every second to calculate the actual speed. The system is considered operational when the absolute value of the deviation between the target speed and the actual speed is less than or equal to 20 revolutions per minute. An online COD analyzer monitors the effluent concentration. The control unit calculates the actual COD removal rate by dividing the difference between the influent and effluent concentrations by the influent concentration. The expected removal rate for the current operating condition is read from a lookup table, and the performance deviation is calculated by comparing the actual value with the expected value. When the performance deviation exceeds a preset range, the control unit adjusts the target agitator speed according to the direction of the deviation, and updates the lookup table with the adjusted speed, the current guide vane angle, and the COD concentration as new operating condition data points.

[0040] In one specific embodiment, step S1 includes:

[0041] The COD concentration values ​​at the water inlet are collected by an online COD analyzer at a preset sampling frequency to form time series data;

[0042] The COD concentration value was compared with the first-level threshold, the second-level threshold, and the third-level threshold, respectively.

[0043] When the COD concentration value is less than the first-level threshold, it is determined to be a low-load condition; when the COD concentration value is greater than or equal to the first-level threshold and less than the second-level threshold, it is determined to be a medium-load condition; when the COD concentration value is greater than or equal to the second-level threshold and less than the third-level threshold, it is determined to be a high-load condition; when the COD concentration value is greater than or equal to the third-level threshold, it is determined to be an ultra-high-load condition, and the load level is obtained.

[0044] Calculate the rate of change of COD concentration between two consecutive samples. When the rate of change of COD concentration is greater than the preset rate of change threshold and the current COD concentration value is greater than the preset concentration threshold, trigger the pre-adjustment control flag.

[0045] Specifically, when collecting COD concentration values ​​at the inlet using an online COD analyzer at a preset sampling frequency of once every 10 minutes, the system can capture the water quality fluctuation trends of coal chemical wastewater while avoiding data redundancy. The online COD analyzer automatically extracts wastewater samples from the inlet pipeline. After passing through a 5-micron pore size filter to remove suspended particles, the samples enter a quartz flow cell. An ultraviolet light source emits a 254-nanometer wavelength beam that penetrates the sample solution. A photodetector receives the transmitted light and converts it into an electrical signal. The signal processing circuit calculates the absorbance based on the ratio of incident light intensity to transmitted light intensity, and then converts it to the concentration value according to a pre-calibrated linear relationship between absorbance and COD concentration. The collected concentration values, along with the timestamp of the sampling time, are stored in a circular buffer in the control unit. The buffer capacity is set to accommodate the most recent 100 sampling records. When new data enters, it automatically overwrites the oldest data, forming dynamically updated time-series data.

[0046] When comparing the COD concentration value with three thresholds, the first threshold is set at 900 mg / L for a normal pollution load, the second threshold at 1200 mg / L for a moderate pollution load, and the third threshold at 1500 mg / L for a severe pollution load. The control unit reads the current COD concentration value and records it as Ccurrent. First, it checks if Ccurrent is less than 900 mg / L. If so, it outputs a low-load condition indicator; if not, it checks if Ccurrent is less than 1200 mg / L. If so, it outputs a medium-load condition indicator; if still not, it checks if Ccurrent is less than 1500 mg / L. If so, it outputs a high-load condition indicator; if none of these conditions are met, it outputs an ultra-high-load condition indicator. Low load operation corresponds to an energy-saving operation mode with a guide vane angle of 30 degrees and a stirring speed of 300 rpm; medium load operation corresponds to an angle of 45 degrees and a speed of 450 rpm; high load operation corresponds to an angle of 55 degrees and a speed of 600 rpm; and ultra-high load operation corresponds to an angle of 60 degrees and a speed of 800 rpm.

[0047] When calculating the COD concentration change rate between two adjacent samples, the control unit extracts the concentration value COD(t) at the current time t and the concentration value COD(t-1) at the previous time t-1 from the time series data. The concentration change rate is calculated by subtracting COD(t-1) from COD(t) to obtain the concentration difference, and then dividing the difference by the time interval of 10 minutes to obtain the change rate in milligrams per liter per minute. When the concentration change rate is greater than the preset change rate threshold of 10 milligrams per liter per minute, it indicates that the wastewater quality is rapidly deteriorating. If the current COD concentration value is also greater than the preset concentration threshold of 800 milligrams per liter, the control unit will set the pre-adjustment control flag from 0 to 1 to activate the feedforward control mechanism, which will call the control parameters corresponding to the higher load level in advance, avoiding the lag in treatment effect caused by passive adjustment after the actual concentration exceeds the threshold.

[0048] Figure 2 This is a schematic diagram illustrating the load level determination process based on a three-level threshold in an embodiment of this application. Figure 2As shown, the horizontal axis represents time (unit: min), the vertical axis represents COD concentration (unit: mg / L), the solid line represents the curve of measured COD concentration value changing with time, and the three horizontal dashed lines are respectively marked as the first threshold T1=900mg / L (low load / medium load boundary line), the second threshold T2=1200mg / L (medium load / high load boundary line) and the third threshold T3=1500mg / L (high load / ultra-high load boundary line). The black dots marked on the curve represent points A (t=20min, COD=850mg / L, entering medium load), B (t=40min, COD=1100mg / L, maintaining medium load), C (t=60min, COD=1400mg / L, entering high load), and D (t=80min, COD=1600mg / L, entering ultra-high load), respectively, demonstrating the dynamic transition of load levels as the COD concentration gradually increases from 650mg / L to 1600mg / L.

[0049] In one specific embodiment, step S3, which involves driving the hydraulic cylinder push rod to adjust the guide plate to the target guide plate angle, includes:

[0050] The required push rod extension is calculated based on the target guide plate angle and the current guide plate angle. The push rod extension is obtained by geometric conversion through the distance from the center of the rotating shaft to the hydraulic cylinder hinge point and the angle between the hydraulic cylinder axis and the guide plate normal.

[0051] The push rod extension amount is converted into a hydraulic cylinder piston rod extension command and sent to the hydraulic control module;

[0052] The hydraulic control module drives the hydraulic station to output hydraulic oil at a preset pressure, which pushes the piston rod of the hydraulic cylinder to extend at a preset speed, causing the guide plate to rotate around the shaft;

[0053] During the hydraulic cylinder's push, the rotation angle of the guide plate is collected in real time by an angle sensor at a preset detection frequency, forming a real-time angle monitoring sequence.

[0054] Specifically, when calculating the required push rod extension based on the target guide plate angle and the current guide plate angle, the current guide plate angle is read by the angle sensor and recorded as θ_current, and the target guide plate angle is extracted from the three-dimensional control parameter lookup table and recorded as θ_target. The angle change Δθ is equal to θ_target minus θ_current. The push rod extension L is obtained through geometric conversion, based on a fixed distance R from the center of the rotating shaft to the hydraulic cylinder hinge point set to 500 mm, and a fixed angle α between the hydraulic cylinder axis and the guide plate normal set to 15 degrees. The calculation formula is L=(R×sin(Δθ)) / cos(α), where sin(Δθ) represents the sine function value of the angle change, and cos(α) represents the cosine function value of the fixed angle. When converting the push rod extension into a hydraulic cylinder piston rod extension command, the extension command includes two parameters: the target push rod position and the extension speed. The target position is the current push rod position plus the calculated extension L, and the extension speed is set to a preset extension speed of 20 mm / s. The command is sent to the hydraulic control module via the CAN bus. The hydraulic control module drives the hydraulic pump in the hydraulic station to pressurize the hydraulic oil to a preset pressure of 10 MPa. The high-pressure hydraulic oil is guided through the proportional directional valve to the rodless chamber of the hydraulic cylinder to push the piston to move. The hydraulic cylinder has a diameter of 80 mm and generates a thrust of more than 50 kN under the pressure of 10 MPa. The piston rod extends and pushes the tail of the guide plate, causing the guide plate to rotate around the shaft.

[0055] During the hydraulic cylinder's movement, the angle sensor collects the guide vane's rotation angle every 0.5 seconds at a preset detection frequency. The angle sensor, based on a potentiometer principle, is mounted on the outer end of the shaft. Its internal sliding contact changes position on the resistance coil as the shaft rotates, and the output resistance value is linearly related to the rotation angle. The signal conversion circuit converts the resistance value into a standard 4-20 mA current signal corresponding to an angle range of 0-90 degrees. After acquiring the current signal, the control unit converts it into an angle value θ according to the linear relationship I=(θ×16) / 90+4, where I is the current signal value in milliamperes and θ is the angle value in degrees. Each acquired angle value, along with a timestamp, is stored to form a real-time angle monitoring sequence. This sequence records the complete dynamic process of the guide vane gradually rotating from the current angle to the target angle.

[0056] In one specific embodiment, step S3, which calculates the angle deviation and performs compensation push, includes:

[0057] The actual angle of the deflector is obtained by detecting the angle sensor.

[0058] Calculate the difference between the target guide vane angle and the actual guide vane angle to obtain the angle deviation;

[0059] When the absolute value of the angle deviation is less than or equal to the first deviation threshold, the guide plate is determined to be in place, the hydraulic cylinder push rod is controlled to stop moving and the position is locked, and a confirmation signal for the position is generated.

[0060] When the absolute value of the angle deviation is greater than the first deviation threshold and less than or equal to the second deviation threshold, the compensation extension amount is calculated based on the angle deviation, and the hydraulic cylinder push rod is controlled to continue to extend the compensation extension amount. After the compensation is completed, the actual angle of the guide plate is re-detected and the angle deviation is recalculated.

[0061] When the absolute value of the angle deviation is greater than the second deviation threshold or the angle deviation is still greater than the first deviation threshold after the number of compensations reaches the preset compensation limit, the fault alarm flag is triggered.

[0062] Specifically, when the actual angle of the guide vane is detected by the angle sensor, the angle sensor outputs a current signal of 4 to 20 mA. The control unit collects the current signal value and records it as J. The actual angle φ of the guide vane is calculated according to the linear conversion relationship φ=(J-4)×90 / 16, where J is the current value in milliamperes, φ is the actual angle in degrees, and the conversion factor 90 / 16 comes from the linear mapping relationship that a 90-degree angle measurement range corresponds to a current variation range of 16 mA. When calculating the difference between the target guide vane angle and the actual guide vane angle, the target guide vane angle extracted from the three-dimensional control parameter lookup table is recorded as the target angle. The angle deviation is equal to the target angle minus the actual angle φ. The sign of the deviation value indicates the direction of deviation of the actual angle relative to the target angle. A positive value indicates that the actual angle is less than the target angle and the angle needs to be increased, while a negative value indicates that the actual angle exceeds the target angle and the angle needs to be decreased. When the absolute value of the angle deviation is less than or equal to the first deviation threshold, the first deviation threshold is set to 2 degrees. This threshold value is based on the simulation results of the internal flow field of the electrocatalytic reactor. The influence of the guide plate angle fluctuation within the range of 2 degrees on the flow velocity distribution of the wastewater impacting the electrode is less than 5%, which is an acceptable error. The control unit determines that the guide plate is in place, sends a stop command to the hydraulic control module, the hydraulic pump stops and the proportional directional valve switches to the middle position to close the inlet and outlet of the hydraulic cylinder, the piston rod locks the current position, and the control unit generates a confirmation signal of being in place.

[0063] When the absolute value of the angular deviation is greater than the first deviation threshold and less than or equal to the second deviation threshold, the second deviation threshold is set to 5 degrees. This threshold value takes into account the scaling friction caused by the high salt characteristics of coal chemical wastewater. When there is slight scaling on the surface of the guide plate, the increased friction may cause a positional deviation of 3 to 5 degrees. In this case, it can still be corrected by compensation push without manual intervention. The control unit recalculates the compensation extension amount based on the angular deviation. The calculation formula for the compensation extension amount is M=(R×sin(angular deviation)) / cos(α), where M is the compensation extension amount in millimeters, R is the distance from the center of the rotating shaft to the hydraulic cylinder hinge point (500 mm), and α is the angle between the hydraulic cylinder axis and the normal of the guide plate (15 degrees). The control unit continues to extend the hydraulic cylinder push rod to the compensation extension amount M. After the compensation is completed, the angle sensor re-detects the actual angle φ of the guide plate, and the control unit recalculates the angular deviation and determines whether the positioning condition is met. If the absolute value of the deviation is still greater than 2 degrees, compensation continues, and the number of compensations is accumulated and recorded. When the absolute value of the angle deviation is greater than the second deviation threshold of 5 degrees or the angle deviation is still greater than the first deviation threshold of 2 degrees after the number of compensations reaches the preset compensation upper limit, the preset compensation upper limit is set to 3 times. This upper limit is based on the response characteristics of the hydraulic system. Under normal working conditions, 3 compensations are sufficient to eliminate the position deviation within 5 degrees. If 3 compensations still cannot achieve the desired result, it is determined that there is a mechanical fault such as the guide plate shaft is stuck or the hydraulic cylinder seal is ineffective. The control unit triggers the fault alarm flag and sends an alarm message to the host computer display system to prompt the operator to repair the equipment.

[0064] Figure 3 This is a schematic diagram of the angle deviation graded compensation control strategy in an embodiment of this application. Figure 3 As shown, the horizontal axis represents the angle deviation judgment condition, and the vertical axis represents the angle deviation threshold (unit: degrees). The bar chart shows the deviation range and corresponding system actions of the three control regions. The first region is for deviation ≤ 2° (in place), with a deviation threshold of 2 degrees. The system determines that the guide vane is in place and locks its position. The second region is for deviation ≤ 5° (compensation once), with a deviation threshold of 5 degrees. The system calculates the compensation extension based on the deviation and drives the hydraulic cylinder to continue pushing, performing a maximum of 3 compensations. The third region is for deviation > 5° (fault alarm), with a deviation threshold exceeding 5 degrees. The system triggers a fault alarm flag to indicate mechanical failure or hydraulic system failure. Different shades of gray are used in the figure to distinguish the three control strategies: white fill indicates normal placement, light gray fill indicates compensation execution, and dark gray fill indicates a fault alarm. This verifies that the hierarchical compensation logic ensures control accuracy while avoiding system oscillation and energy waste caused by infinite compensation.

[0065] In one specific embodiment, it further includes:

[0066] Record the number of compensations initiated each time compensation is executed, and sum them up to obtain the cumulative number of compensations for the day;

[0067] When the cumulative number of compensations in a day exceeds the preset cumulative threshold, the hydraulic system warning flag is triggered;

[0068] Based on the warning flags of the hydraulic system, equipment maintenance prompts are generated, including hydraulic oil level check prompts and hydraulic cylinder seal status check prompts.

[0069] Specifically, the control unit increments the compensation counter by 1 after each compensation push operation, recording the number of compensation pushes performed. The compensation counter starts counting from midnight each day, and the cumulative number of compensation push operations for the day is obtained by accumulating all compensation push operations for that day. When the cumulative number of compensations for the day exceeds the preset cumulative threshold, which is set to 10 times, this threshold value is determined based on the compensation frequency statistics under normal operating conditions of the hydraulic system. During the treatment of coal chemical wastewater, the scaling rate on the surface of the guide plate is relatively slow, and under normal circumstances, the number of compensations per day does not exceed 5 times. If the cumulative number of compensations exceeds 10 times, it indicates that there may be hidden dangers in the hydraulic system, such as hydraulic oil leakage leading to insufficient thrust or wear of the hydraulic cylinder seals leading to a decrease in position holding capability. The control unit triggers the hydraulic system warning flag position to 1. When generating equipment maintenance prompts based on the hydraulic system warning flag, the control unit automatically generates equipment maintenance prompts and sends them to the host computer display after detecting that the warning flag is 1. The equipment maintenance prompts include hydraulic oil level check prompts and hydraulic cylinder seal status check prompts. The hydraulic oil level check prompt instructs the operator to open the hydraulic station oil tank to check whether the hydraulic oil level is below the minimum mark. If the level is insufficient, add ISO VG 46 anti-wear hydraulic oil to the standard level. The hydraulic cylinder seal status check prompt instructs the operator to observe whether there are any signs of hydraulic oil leakage on the surface of the hydraulic cylinder piston rod. If leakage is found, the machine needs to be stopped and the piston rod seal ring and dust seal replaced. Through the warning mechanism, predictive maintenance of equipment status is achieved to avoid sudden failures of the hydraulic system from affecting the normal operation of the electrocatalytic reactor.

[0070] In one specific embodiment, step S2 includes:

[0071] The lookup table retrieval criteria are determined based on the load level and the status of the pre-adjustment control flags.

[0072] When the pre-adjustment control flag is not triggered, the corresponding target guide vane angle and target agitator speed are directly extracted from the three-dimensional control parameter lookup table according to the load level.

[0073] When the pre-adjustment control flag is triggered, the predicted COD concentration after the prediction period is calculated based on the current COD concentration value and the COD concentration change rate.

[0074] The predicted COD concentration is compared with the three-level threshold to obtain the predicted load level;

[0075] Based on the predicted load level, the corresponding target guide vane angle and target agitator speed are extracted from the three-dimensional control parameter lookup table to achieve feedforward control.

[0076] Specifically, when determining the lookup table retrieval conditions based on the load level and the status of the pre-adjustment control flag, the control unit first reads the load level and the status value of the pre-adjustment control flag output in step S1. The load level is represented by integer codes: 1 represents low load, 2 represents medium load, 3 represents high load, and 4 represents ultra-high load. The pre-adjustment control flag is represented by binary codes: 0 indicates not triggered, and 1 indicates triggered. When the pre-adjustment control flag status is 0 (not triggered), the control unit directly extracts the corresponding target guide vane angle and target agitator speed from the three-dimensional control parameter lookup table according to the load level. The lookup table uses the load level code as the index key for retrieval. Load level 1 corresponds to extracting a guide vane angle of 30 degrees and an agitator speed of 300 rpm; load level 2 corresponds to extracting an angle of 45 degrees and a speed of 450 rpm; load level 3 corresponds to extracting an angle of 55 degrees and a speed of 600 rpm; and load level 4 corresponds to extracting an angle of 60 degrees and a speed of 800 rpm. The extracted target parameters are directly output for subsequent hydraulic drive control.

[0077] When the pre-adjustment control flag is set to 1 (triggered), it indicates that the wastewater quality is rapidly deteriorating and the feedforward control mechanism needs to be activated. The control unit calculates the predicted COD concentration after a prediction period based on the current COD concentration value and the COD concentration change rate. The prediction period is set to 10 minutes, and the formula for calculating the predicted COD concentration is: predicted concentration equals the current concentration value plus the concentration change rate multiplied by the prediction period of 10 minutes. When comparing the predicted COD concentration with the three-level threshold, the comparison logic is the same as in step S1. When the predicted concentration is less than 900 mg / L, it is determined to be a low load; when it is between 900 and 1200 mg / L, it is determined to be a medium load; when it is between 1200 and 1500 mg / L, it is determined to be a high load; and when it exceeds 1500 mg / L, it is determined to be an ultra-high load, thus obtaining the predicted load level. The control unit extracts the corresponding target guide vane angle and target agitator speed from the three-dimensional control parameter lookup table based on the predicted load level rather than the current load level. This enables feedforward control to call the control parameters corresponding to the higher load level 10 minutes in advance, avoiding the risk of delayed treatment effect and excessive effluent caused by passive adjustment after the concentration actually exceeds the threshold.

[0078] In one specific embodiment, step S4 includes:

[0079] The stirring blade speed adjustment process is initiated based on the arrival confirmation signal;

[0080] The required hydraulic oil flow rate for the hydraulic motor is calculated based on the target stirring blade speed. The hydraulic oil flow rate is obtained by converting the hydraulic motor displacement and volumetric efficiency.

[0081] Calculate the target opening of the proportional throttle valve based on the hydraulic oil flow rate, and control the proportional throttle valve to adjust to the target opening.

[0082] The actual rotational speed of the stirring blades is detected by a speed sensor, and the speed deviation between the target stirring blade speed and the actual stirring blade speed is calculated.

[0083] When the absolute value of the speed deviation is less than or equal to the speed tolerance threshold, the stirring speed is determined to be in place;

[0084] Collect the COD concentration of the effluent from the electrocatalytic reactor outlet, and calculate the actual COD removal rate based on the COD concentration values ​​at the inlet and outlet.

[0085] Extract the expected COD removal rate corresponding to the current operating condition from the three-dimensional control parameter lookup table;

[0086] The difference between the actual COD removal rate and the expected COD removal rate is calculated to obtain the performance deviation;

[0087] When the performance deviation exceeds the preset deviation range, the target stirring blade speed is adjusted according to the positive or negative direction of the performance deviation. The adjusted target stirring blade speed, the current actual angle of the guide vane, and the current COD concentration value are used as new operating condition data points to update the three-dimensional control parameter lookup table.

[0088] Specifically, when the stirring blade speed regulation process is initiated based on the arrival confirmation signal, the control unit triggers the stirring speed regulation program after detecting that the arrival confirmation signal flag bit output in step S3 is 1. When calculating the required hydraulic oil flow rate of the hydraulic motor based on the target stirring blade speed, the formula for calculating the hydraulic oil flow rate Q is Q=(speed × displacement) / efficiency, where the speed is the target stirring blade speed extracted from the lookup table in revolutions per minute, the displacement is the fixed displacement of the hydraulic motor of 50 ml per revolution, the efficiency is the volumetric efficiency of 0.92, and the flow rate Q is in liters per minute. When calculating the target opening degree of the proportional throttle valve based on the hydraulic oil flow rate, the maximum flow rate when the throttle valve is fully open is 50 liters per minute. The formula for calculating the target opening degree W is W=Q / 50, where the opening degree W is a dimensionless value ranging from 0 to 1. The control unit converts the opening degree value into a control current signal of 4 to 20 mA, the current value is equal to 4 plus the opening degree multiplied by 16, and sends it to the proportional throttle valve solenoid coil to drive the valve core to move to the target position. When the actual speed of the stirring blade is detected by the speed sensor, the Hall effect speed sensor outputs a pulse signal. The control unit counts the number of pulses per second and divides it by the number of teeth of the magnetic gear to obtain the actual speed. The difference between the target stirring blade speed and the actual stirring blade speed is calculated to obtain the speed deviation. When the absolute value of the speed deviation is less than or equal to the speed tolerance threshold, the stirring speed is determined to be in place. The speed tolerance threshold is set to 20 revolutions per minute.

[0089] When collecting the COD concentration of the effluent from the electrocatalytic reactor outlet, the online COD analyzer installed on the effluent pipeline uses the same ultraviolet absorption method as the inlet. After obtaining the effluent concentration, the control unit calculates the actual COD removal rate as a percentage, based on the formula: the difference between the inlet concentration and the effluent concentration is divided by the inlet concentration and then multiplied by 100. When retrieving the expected COD removal rate corresponding to the current operating condition from the three-dimensional control parameter lookup table, the lookup table uses the current COD concentration, guide vane angle, and stirring speed as three-dimensional indexes to retrieve the corresponding expected removal rate data. The difference between the actual removal rate and the expected removal rate is calculated to obtain the performance deviation. When the performance deviation exceeds the preset deviation range (set to ±5 percentage points), a negative performance deviation indicates that the actual removal rate is lower than expected, requiring enhanced stirring and mass transfer; the control unit increases the target stirring speed by 10%. A positive performance deviation with an absolute value greater than 5 percentage points indicates that the actual removal rate is significantly higher than expected, resulting in excessive stirring and energy waste; the control unit decreases the target stirring speed by 10%. When updating the three-dimensional control parameter lookup table with the adjusted target impeller speed, the current actual angle of the guide vane, and the current COD concentration as new operating condition data points, the control unit interpolates and adds new calibration points near the current COD concentration in the lookup table, stores the actual removal rate and energy consumption data corresponding to this operating condition, and the lookup table achieves self-learning optimization by continuously accumulating actual operating data, so that the control parameters gradually adapt to the actual treatment characteristics of coal chemical wastewater.

[0090] The intelligent flow guiding and stirring control method of the electrocatalytic reactor in the embodiments of this application has been described above. The intelligent flow guiding and stirring control system of the electrocatalytic reactor in the embodiments of this application is described below. One embodiment of the intelligent flow guiding and stirring control system of the electrocatalytic reactor in the embodiments of this application includes:

[0091] The comparison module is used to collect the chemical oxygen demand (COD) concentration value, compare the COD concentration value with the three-level threshold, and obtain the load level.

[0092] The extraction module is used to extract the target guide vane angle and the target agitator blade speed from the three-dimensional control parameter lookup table according to the load level;

[0093] The drive module is used to drive the hydraulic cylinder push rod to adjust the guide plate to the target guide plate angle. It detects the actual angle of the guide plate through the angle sensor, calculates the angle deviation, and performs compensation push when the angle deviation is greater than 2° to obtain a positioning confirmation signal.

[0094] The calculation module is used to start the speed adjustment of the stirring blade according to the arrival confirmation signal, drive the hydraulic motor to adjust the stirring speed to the target stirring blade speed, calculate the performance deviation between the actual COD removal rate and the expected value in the lookup table, and adjust the target stirring blade speed and update the three-dimensional control parameter lookup table when the performance deviation exceeds the preset range.

[0095] The present invention also provides a computer-readable storage medium, which can be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium, wherein the computer-readable storage medium stores instructions that, when the instructions are executed on a computer, cause the computer to perform the steps of the intelligent flow guiding and stirring control method of the electrocatalytic reactor.

[0096] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0097] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause an intelligent flow guiding and stirring control device (which can be a personal computer, server, or network device, etc.) of an electrocatalytic reactor to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0098] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for intelligent flow guidance and stirring control of an electrocatalytic reactor, characterized in that, The method includes: Step S1: Collect the chemical oxygen demand (COD) concentration value and compare the COD concentration value with three threshold levels to obtain the load level. This includes: collecting the COD concentration value at the inlet using an online COD analyzer at a preset sampling frequency to form time series data; comparing the COD concentration value with the first, second, and third threshold levels respectively; when the COD concentration value is less than the first threshold level, it is determined to be a low load condition; when the COD concentration value is greater than or equal to the first threshold level and less than the second threshold level, it is determined to be a medium load condition; when the COD concentration value is greater than or equal to the second threshold level and less than the third threshold level, it is determined to be a high load condition; when the COD concentration value is greater than or equal to the third threshold level, it is determined to be an ultra-high load condition, thus obtaining the load level; calculating the COD concentration change rate between two adjacent samples; when the COD concentration change rate is greater than a preset change rate threshold and the current COD concentration value is greater than a preset concentration threshold, triggering the pre-adjustment control flag. Step S2: Extract the target guide vane angle and target impeller speed from the three-dimensional control parameter lookup table according to the load level, including: determining the lookup table retrieval conditions according to the load level and the state of the pre-adjustment control flag; when the pre-adjustment control flag is not triggered, directly extract the corresponding target guide vane angle and target impeller speed from the three-dimensional control parameter lookup table according to the load level; when the pre-adjustment control flag is triggered, calculate the predicted COD concentration after the prediction period according to the current COD concentration value and the COD concentration change rate; compare the predicted COD concentration with the three-level threshold to obtain the predicted load level; extract the corresponding target guide vane angle and target impeller speed from the three-dimensional control parameter lookup table according to the predicted load level to achieve feedforward control; Step S3: Drive the hydraulic cylinder push rod to adjust the guide plate to the target guide plate angle, detect the actual angle of the guide plate by the angle sensor, calculate the angle deviation, and when the angle deviation is greater than 2°, perform compensation push to obtain a positioning confirmation signal; Step S4: Based on the arrival confirmation signal, start the speed adjustment of the stirring blade, drive the hydraulic motor to adjust the stirring speed to the target stirring blade speed, calculate the performance deviation between the actual COD removal rate and the expected value in the lookup table, and when the performance deviation exceeds the preset range, adjust the target stirring blade speed and update the three-dimensional control parameter lookup table.

2. The intelligent flow guiding and stirring control method for the electrocatalytic reactor according to claim 1, characterized in that, Step S3, which involves driving the hydraulic cylinder push rod to adjust the guide plate to the target guide plate angle, includes: The required push rod extension amount is calculated based on the target guide plate angle and the current guide plate angle. The push rod extension amount is obtained by geometric conversion through the distance from the center of the rotating shaft to the hydraulic cylinder hinge point and the angle between the hydraulic cylinder axis and the guide plate normal. The push rod extension amount is converted into a hydraulic cylinder piston rod extension command and sent to the hydraulic control module; The hydraulic control module drives the hydraulic station to output hydraulic oil at a preset pressure, which pushes the piston rod of the hydraulic cylinder to extend at a preset speed, causing the guide plate to rotate around the shaft; During the hydraulic cylinder's push, the angle sensor collects the rotation angle of the guide plate in real time at a preset detection frequency, forming a real-time angle monitoring sequence.

3. The intelligent flow guiding and stirring control method for the electrocatalytic reactor according to claim 2, characterized in that, The step S3, which calculates the angle deviation and performs compensation push, includes: The actual angle of the guide plate is obtained by the angle sensor. The difference between the target guide vane angle and the actual guide vane angle is calculated to obtain the angle deviation; When the absolute value of the angle deviation is less than or equal to the first deviation threshold, it is determined that the guide plate is in place, the hydraulic cylinder push rod is controlled to stop moving and the position is locked, and the in-place confirmation signal is generated. When the absolute value of the angle deviation is greater than the first deviation threshold and less than or equal to the second deviation threshold, the compensation extension amount is calculated based on the angle deviation, and the hydraulic cylinder push rod is controlled to continue to extend by the compensation extension amount. After the compensation is completed, the actual angle of the guide plate is re-detected and the angle deviation is recalculated. When the absolute value of the angle deviation is greater than the second deviation threshold or the angle deviation is still greater than the first deviation threshold after the number of compensations reaches the preset compensation limit, the fault alarm flag is triggered.

4. The intelligent flow guiding and stirring control method for the electrocatalytic reactor according to claim 3, characterized in that, Also includes: Record the number of compensations initiated each time compensation is executed, and sum them up to obtain the cumulative number of compensations for the day; When the cumulative number of compensations for the day exceeds the preset cumulative threshold, the hydraulic system warning flag is triggered; Equipment maintenance prompts are generated based on the warning flags of the hydraulic system. These prompts include hydraulic oil level check prompts and hydraulic cylinder seal status check prompts.

5. The intelligent flow guiding and stirring control method for the electrocatalytic reactor according to claim 1, characterized in that, Step S4 includes: The stirring blade speed adjustment process is initiated based on the arrival confirmation signal. The required hydraulic oil flow rate for the hydraulic motor is calculated based on the target stirring blade speed. The hydraulic oil flow rate is obtained by converting the hydraulic motor displacement and volumetric efficiency. Calculate the target opening of the proportional throttle valve based on the hydraulic oil flow rate, and control the proportional throttle valve to adjust to the target opening. The actual rotational speed of the stirring blade is detected by a speed sensor, and the speed deviation between the target stirring blade speed and the actual rotational speed of the stirring blade is calculated. When the absolute value of the speed deviation is less than or equal to the speed tolerance threshold, the stirring speed is determined to be in place; Collect the COD concentration of the effluent from the electrocatalytic reactor outlet, and calculate the actual COD removal rate based on the COD concentration value at the inlet and the COD concentration of the effluent. Extract the expected COD removal rate corresponding to the current operating condition from the three-dimensional control parameter lookup table; The performance deviation is obtained by calculating the difference between the actual COD removal rate and the expected COD removal rate. When the performance deviation exceeds the preset deviation range, the target stirring blade speed is adjusted according to the positive or negative direction of the performance deviation. The adjusted target stirring blade speed, the current actual angle of the guide plate, and the current COD concentration value are used as new operating condition data points to update the three-dimensional control parameter lookup table.

6. An intelligent flow guiding and stirring control system for an electrocatalytic reactor, characterized in that, The method for intelligent flow guidance and stirring control of the electrocatalytic reactor as described in any one of claims 1-5, wherein the intelligent flow guidance and stirring control system of the electrocatalytic reactor comprises: The comparison module is used to collect the chemical oxygen demand (COD) concentration value, compare the COD concentration value with the three-level threshold, and obtain the load level. The extraction module is used to extract the target guide vane angle and the target agitator blade speed from the three-dimensional control parameter lookup table according to the load level; The drive module is used to drive the hydraulic cylinder push rod to adjust the guide plate to the target guide plate angle. It detects the actual angle of the guide plate through the angle sensor, calculates the angle deviation, and performs compensation push when the angle deviation is greater than 2° to obtain a positioning confirmation signal. The calculation module is used to start the speed adjustment of the stirring blade according to the arrival confirmation signal, drive the hydraulic motor to adjust the stirring speed to the target stirring blade speed, calculate the performance deviation between the actual COD removal rate and the expected value in the lookup table, and adjust the target stirring blade speed and update the three-dimensional control parameter lookup table when the performance deviation exceeds the preset range.

7. An intelligent flow guiding and stirring control device for an electrocatalytic reactor, characterized in that, It includes a memory and a processor, the memory storing a computer program that can run on the processor, and the processor executing the computer program to implement the intelligent flow guidance and stirring control method for the electrocatalytic reactor according to any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is run by the processor, it causes the processor to execute the intelligent flow guidance and stirring control method for the electrocatalytic reactor as described in any one of claims 1 to 5.

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