Mother liquor tank pressure control method, system, medium, and product based on mother liquor circulation

Abstract

The application relates to the technical field of pressure control, in particular to a mother liquor tank pressure control method and system based on mother liquor circulation, a medium and a product, the method comprises the following steps: obtaining a tank pressure parameter, the tank pressure parameter being the gas pressure in a mother liquor tank; when the tank pressure parameter is higher than a preset pressure threshold, determining a pressure release amount based on the tank pressure parameter and the preset pressure threshold; determining a valve opening degree based on the pressure release amount, and adjusting and controlling the opening degree of a pressure control valve based on the valve opening degree. The application facilitates improving the accuracy of pressure control on the mother liquor tank.

Description

Technical Field

[0001] The present application relates to the field of pressure control technology, and in particular to a mother liquid tank pressure control method, system, medium and product based on mother liquid circulation. Background Art

[0002] Mother liquor refers to a liquid mixture containing unreacted raw materials, by-products, catalysts, solvents and other components during a chemical reaction or production process. In the chemical, pharmaceutical, food processing and other industries, mother liquor tanks are generally used to store or collect mother liquor for subsequent treatment or recovery. Mother liquor treatment or recovery can reduce the pre-treatment and post-treatment steps of raw materials, reduce energy consumption and improve energy utilization efficiency.

[0003] The stability of the mother liquor tank pressure is crucial to the normal operation of the entire mother liquor circulation process. Pressure fluctuations in the tank may affect the fluidity and transportation efficiency of the mother liquor in the subsequent reaction process, which may affect the subsequent reaction and treatment efficiency. Therefore, it is particularly important to effectively control the pressure of the mother liquor tank during the mother liquor circulation process. Summary of the Invention

[0004] In order to improve the accuracy of pressure control of the mother liquor tank, thereby maintaining the fluidity and transportation efficiency of the mother liquor in the subsequent reaction process, the present application provides a mother liquor tank pressure control method, system, medium and product based on mother liquor circulation.

[0005] In a first aspect, the present application provides a method for controlling the pressure of a mother liquid tank based on mother liquid circulation, which adopts the following technical solution:

[0006] A mother liquid tank pressure control method based on mother liquid circulation, comprising:

[0007] Obtaining a tank pressure parameter, wherein the tank pressure parameter is the tank pressure of the mother liquid tank;

[0008] When the pressure parameter in the tank is higher than a preset pressure threshold, determining a pressure release amount based on the pressure parameter in the tank and the preset pressure threshold;

[0009] The valve opening is determined based on the pressure release amount, and the opening of the pressure control valve is regulated based on the valve opening.

[0010] By adopting the above technical solution, the pressure in the tank is monitored in real time, and corresponding pressure control measures are taken in time when the pressure in the tank is higher than the pressure threshold, so as to effectively prevent safety accidents caused by excessive pressure in the mother liquid tank. In addition, when determining the pressure control measures, the corresponding pressure release amount is determined based on the preset pressure threshold of the pressure in the mother liquid tank, rather than arbitrarily releasing the pressure in the mother liquid tank. The valve opening is determined by the pressure release amount, which facilitates improving the accuracy of the pressure control process, thereby facilitating the avoidance of excessive or insufficient pressure release during the control process, and further facilitating maintaining the fluidity and transportation efficiency of the mother liquid in the mother liquid tank during the subsequent reaction process.

[0011] In one possible implementation, the method further includes:

[0012] Acquire an image of the interior of the tank, and identify whether the image of the interior of the tank has a preset suspension feature;

[0013] When there are preset suspension features, identifying the suspension parameters and suspension position of each preset suspension feature in the tank interior image, wherein the suspension parameters include suspension edge information, suspension color information, and suspension transparency;

[0014] Determining a suspension processing strategy corresponding to each preset suspension feature based on a mapping relationship between each suspension parameter and a preset processing strategy, wherein the preset processing strategy mapping relationship is a corresponding relationship between the suspension parameter and the suspension processing strategy;

[0015] Based on the suspension processing strategy and suspension position corresponding to each suspension parameter, a suspension processing instruction is determined, and based on the suspension control instruction, a suspension processing device is driven to process the preset suspension characteristics in the mother liquid tank.

[0016] By adopting the above technical solution, an image recognition algorithm is used to identify whether there are preset suspension features in the liquid surface image in the mother liquid tank, so that problems that may affect the mother liquid circulation efficiency can be discovered and handled in a timely manner. In addition, a corresponding suspension processing strategy is determined based on the suspension parameters of each preset suspension feature identified, rather than adopting a consistent suspension processing strategy for preset suspension features with different suspension parameters. That is, by identifying and analyzing the specific suspension parameters of each preset suspension feature, it is convenient to accurately select a corresponding processing strategy for each preset suspension feature, which is convenient for improving the suspended matter processing efficiency while reducing unnecessary waste of resources.

[0017] In one possible implementation, when the number of preset suspension features included in the image inside the tank is greater than a preset suspension number, the method further includes:

[0018] Acquiring a mother liquid movement rate, and determining a predicted movement area of ​​each preset suspension feature within a first preset time period based on the suspension parameter of each preset suspension feature and the mother liquid movement rate;

[0019] All predicted moving areas are superimposed to determine the overlapping area, and the preset suspension features corresponding to the overlapping area are determined as adjacent suspension features;

[0020] Determining the degree of overlap of the regions corresponding to each adjacent suspended feature based on the predicted movement region of each adjacent suspended feature and the overlapping region;

[0021] The adjacent suspended feature with the highest regional overlap is determined as the target suspended feature, and each adjacent suspended feature is processed using the suspension processing strategy corresponding to the target suspended feature and the overlapping area.

[0022] By adopting the above technical solution, by analyzing the mother liquor movement rate and the suspension parameters of the suspended matter, it is convenient to determine the movement area of ​​the suspended matter in the future period of time, and suspension treatment based on the predicted movement area of ​​the suspended matter is convenient to improve the suspension treatment effect. When the amount of suspended matter is large, by analyzing the overlapping areas of the predicted movement areas corresponding to different suspended matter, it is convenient to maximize the utilization of treatment resources, that is, it is convenient to avoid repeated treatment of similar or adjacent areas, thereby facilitating the improvement of the utilization efficiency of suspension treatment resources.

[0023] In one possible implementation, the method further includes:

[0024] Determine, based on the suspension position of each adjacent suspension feature, a suspension boundary region corresponding to all adjacent suspension features, wherein each adjacent suspension feature is located on a boundary line of the suspension boundary region;

[0025] identifying a border size of the floating border area, and when the border size is greater than a preset border size, determining a size difference based on the border size and the preset border size;

[0026] Determining stirring parameters corresponding to the size difference based on the mapping relationship between the size difference and the stirring parameter, wherein the stirring parameter mapping relationship is a corresponding relationship between the size difference and the stirring parameter, and the stirring parameter includes a stirring amplitude and a stirring rate;

[0027] A stirring instruction is determined based on the overlapping area and the stirring parameter, and a stirring rod in the mother liquid tank is driven to stir based on the stirring instruction.

[0028] By adopting the above technical solution, the suspension position of each adjacent suspension feature is analyzed, so that the dispersion degree of multiple adjacent suspension features can be determined. In addition, the dispersion degree of multiple adjacent suspension features can be used to timely judge whether it is necessary to drive the stirring rod in the mother liquid tank. The stirring rod is used to stir the mother liquid in the mother liquid tank to promote the mixing of multiple adjacent suspension features, so that the suspended matter is evenly mixed or the dissolution is accelerated, thereby facilitating the improvement of the fluidity of the mother liquid circulation process.

[0029] In one possible implementation, the method further includes:

[0030] Counting the internal gas pressure in the mother liquid tank within a second preset time period, and determining a rate of change of the internal gas pressure in the mother liquid tank within the second preset time period;

[0031] When the air pressure change rate is higher than the preset rate, the overflow valve opening corresponding to the air pressure change rate is determined based on the mapping relationship between the air pressure change rate and the overflow valve opening. The overflow valve opening mapping relationship is the correspondence between the air pressure change rate and the overflow valve opening. The overflow valve opening is the valve opening of the overflow pipe in the mother liquid tank.

[0032] By adopting the above technical solution, the rate of change of the air pressure in the tank is analyzed so that when the rate of change of the air pressure is higher than the preset rate, the opening of the overflow valve can be adjusted in a timely and accurate manner to ensure that the air pressure in the mother liquid tank can be quickly restored to a safe range, thereby avoiding the risks caused by the continuous increase in air pressure.

[0033] In one possible implementation, the method further includes:

[0034] Obtaining a feed rate and a discharge rate within a third preset time period, and determining a circulation ratio between the feed rate and the discharge rate within the third preset time period;

[0035] determining a predicted circulation ratio of the mother liquid tank in a fourth time period based on the circulation ratio;

[0036] When the predicted cycle ratio is lower than a preset ratio, determining a predicted air pressure difference based on the predicted cycle ratio and the preset ratio;

[0037] The amount of supplementary gas is determined based on the predicted gas pressure difference, a gas supplementation instruction is generated based on the supplementary gas amount, and an inert gas injection pipe is controlled based on the gas supplementation instruction to inject inert gas into the mother liquid tank.

[0038] By adopting the above technical solution, by analyzing the feed amount flowing into the mother liquid tank and the discharge amount flowing out of the mother liquid tank in the historical time period, it is convenient to analyze the flow of mother liquid in the mother liquid tank. Through the circulation ratio between the feed amount and the discharge amount, it is convenient to understand the air pressure change in the mother liquid tank, and it is also convenient to replenish inert gas in time when the air pressure in the mother liquid tank is low, thereby avoiding safety hazards caused by too low air pressure. In addition, by predicting the air pressure value, the amount of replenished gas is accurately calculated and an instruction is generated to control the injection of inert gas, so that the air pressure in the tank can be quickly restored to a safe range, and it can also be convenient to avoid waste of gas resources.

[0039] In a second aspect, the present application provides a control system that adopts the following technical solution:

[0040] A control system, comprising:

[0041] at least one processor;

[0042] Memory;

[0043] At least one application, wherein the at least one application is stored in a memory and configured to be executed by at least one processor, and the at least one application is configured to: execute the above-mentioned mother liquid tank pressure control method based on mother liquid circulation.

[0044] In a third aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution:

[0045] A computer-readable storage medium includes: a computer program stored therein that can be loaded by a processor and execute the mother liquid tank pressure control method based on mother liquid circulation.

[0046] In a fourth aspect, the present application provides a computer program product that adopts the following technical solution:

[0047] A computer program product includes a computer program, which implements the above-mentioned mother liquid tank pressure control method based on mother liquid circulation when executed by a processor.

[0048] In summary, this application includes at least one of the following beneficial technical effects:

[0049] By monitoring the pressure in the tank in real time and taking corresponding pressure control measures in time when the pressure in the tank is higher than the pressure threshold, it is convenient to effectively prevent safety accidents caused by excessive pressure in the mother liquid tank. In addition, when determining the pressure control measures, the corresponding pressure release amount is determined based on the preset pressure threshold of the pressure in the mother liquid tank, rather than arbitrarily releasing the pressure in the mother liquid tank. The valve opening is determined by the pressure release amount, which is convenient for improving the accuracy of the pressure control process, thereby avoiding excessive or insufficient pressure release during the control process, and then facilitating the maintenance of the fluidity and transportation efficiency of the mother liquid in the mother liquid tank during the subsequent reaction process.

[0050] By analyzing the suspension position of each adjacent suspension feature, it is convenient to determine the dispersion degree of multiple adjacent suspension features. In addition, the dispersion degree of multiple adjacent suspension features facilitates timely judgment on whether it is necessary to drive the stirring rod in the mother liquid tank. The stirring rod is used to stir the mother liquid in the mother liquid tank to promote the mixing of multiple adjacent suspension features, so that the suspended matter is evenly mixed or the dissolution is accelerated, thereby facilitating the improvement of the fluidity of the mother liquid circulation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 1 is a flow chart of a method for controlling the pressure of a mother liquid tank based on mother liquid circulation in an embodiment of the present application;

[0052] Figure 2 This is a schematic diagram of a temporary suspension feature processing flow corresponding to an overlapping area in an embodiment of the present application;

[0053] Figure 3 It is a structural diagram of a control system in an embodiment of the present application. DETAILED DESCRIPTION

[0054] The following is combined with Figures 1-3 This application is described in further detail.

[0055] After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

[0056] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0057] It should be noted that in the optional embodiments of the present application, the object information and other related data involved, when the embodiments in the present application are applied to specific products or technologies, need to obtain the permission or consent of the object, and the collection, use and processing of the relevant data need to comply with the relevant laws, regulations and standards of the relevant countries and regions. In other words, if the embodiments of the present application involve data related to the object, it needs to be obtained through the authorization and consent of the object, the authorization and consent of the relevant departments, and in compliance with the relevant laws, regulations and standards of the country and region. If personal information is involved in the embodiments, the acquisition of all personal information requires the consent of the individual. If sensitive information is involved, the separate consent of the information subject needs to be obtained. The embodiments also need to be implemented with the authorization and consent of the object.

[0058] Specifically, an embodiment of the present application provides a mother liquid tank pressure control method based on mother liquid circulation, which is executed by a control system, which can be a server or a terminal device, wherein the server can be an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. The terminal device can be a smartphone, tablet computer, laptop computer, desktop computer, etc., but is not limited to this. The terminal device and the server can be directly or indirectly connected via wired or wireless communication, which is not limited in the embodiment of the present application.

[0059] refer to Figure 1 , Figure 1 : is a flow chart of a method for controlling the pressure of a mother liquid tank based on mother liquid circulation in an embodiment of the present application, the method comprising steps S110 to S130, wherein:

[0060] Step S110: obtaining a tank pressure parameter, where the tank pressure parameter is the gas pressure inside the mother liquid tank.

[0061] Specifically, since the mother liquor is a liquid mixture containing unreacted raw materials, by-products, catalysts, solvents and other components in a chemical reaction or production process, each unreacted raw material has a certain saturated vapor pressure at a specific temperature and pressure, that is, the gas volatilization amount of the material. When the mother liquor in the mother liquor tank evaporates, it may be accompanied by the generation of gas. The generated gas accumulates at the top of the mother liquor tank to form air pressure. The mother liquor in the mother liquor tank will be accompanied by the entry and exit of materials during the circulation process, which may affect the total amount and volatility of the materials in the mother liquor tank, and may cause the air pressure in the mother liquid tank to be in a dynamically changing state. Once the air pressure in the tank is unbalanced, the tank body of the mother liquid tank may burst, and the mother liquid may leak out, which may pose a threat to the surrounding environment or personnel safety. Therefore, it is necessary to measure and control the air pressure in the tank in real time.

[0062] The air pressure inside the mother liquid tank can be measured by a pressure gauge installed at the mother liquid tank and then uploaded to the control system. The connecting pipe of the pressure gauge can be directly assembled at the reserved interface of the mother liquid tank. The specific measuring equipment is not specifically limited in the embodiment of this application, as long as the air pressure inside the mother liquid tank can be measured.

[0063] Step S120: When the pressure parameter in the tank is higher than the preset pressure threshold, determining the pressure release amount based on the pressure parameter in the tank and the preset pressure threshold.

[0064] Specifically, when the pressure parameter inside the tank is not higher than the preset pressure threshold, it indicates that the air pressure inside the mother liquid tank is in a safe range, that is, when the air pressure inside the tank is not higher than the preset pressure threshold, the probability of the mother liquid tank body bursting is small. Once the air pressure inside the tank is higher than the preset pressure threshold, it indicates that the probability of the mother liquid tank body bursting during the subsequent mother liquid circulation process is high, and as the air pressure inside the tank increases, the probability of the tank body bursting will also increase. The specific preset pressure threshold is not specifically limited in the embodiment of this application and can be set by relevant technical personnel according to actual needs.

[0065] When the air pressure in the tank is higher than the preset pressure threshold, the gas in the tank needs to be released outwards to keep the air pressure in the tank within a safe range, wherein the pressure release amount is the minimum amount of gas released outside the tank. When determining the pressure release amount, the pressure difference between the air pressure in the tank and the preset pressure threshold can be calculated first, and then the corresponding pressure release amount can be determined based on the pressure difference and the volume of the mother liquid tank. The method of determining the pressure release amount is not specifically limited in the embodiment of the present application, as long as the pressure release amount corresponding to the air pressure in the tank can be determined.

[0066] Step S130: determining the valve opening based on the pressure release amount, and regulating the opening of the pressure control valve based on the valve opening.

[0067] Specifically, the pressure control valve is provided at a preset interface of the mother liquid tank, which can discharge the gas in the mother liquid tank and can also control the input of other gases into the mother liquid tank. According to the historical control experience data, the linear relationship curve between the pressure release amount and the valve opening can be determined, and the corresponding valve opening can be determined based on the linear relationship curve and the pressure release amount. In the embodiment of the present application, the default gas discharge time period is a fixed duration, that is, on the premise of determining the fixed duration and the pressure release amount, it is necessary to determine the release amount corresponding to the unit time, and the valve opening can reflect the release amount corresponding to the unit time. Among them, the fixed duration can be 2 minutes or 3 minutes. The specific duration is not specifically limited in the embodiment of the present application and can be set by relevant technical personnel according to actual conditions. After the release operation is completed, it is necessary to check again whether the air pressure in the tank has dropped to a safe range, and the released gas in the tank must be recovered or discharged.

[0068] For the embodiments of the present application, by monitoring the pressure in the tank in real time and taking corresponding pressure control measures in time when the pressure in the tank is higher than the pressure threshold, it is convenient to effectively prevent safety accidents caused by excessive pressure in the mother liquid tank. In addition, when determining the pressure control measures, the corresponding pressure release amount is determined based on the preset pressure threshold of the pressure in the mother liquid tank, rather than arbitrarily releasing the pressure in the mother liquid tank. The valve opening is determined by the pressure release amount, which facilitates improving the accuracy of the pressure control process, thereby facilitating the avoidance of excessive or insufficient pressure release during the control process, and further facilitating the maintenance of the fluidity and transportation efficiency of the mother liquid in the mother liquid tank during the subsequent reaction process.

[0069] Furthermore, in order to improve the fluidity of the mother liquid during circulation, the method provided in the embodiment of the present application further includes:

[0070] Acquire an image inside the tank and identify whether there is a preset suspension feature in the image inside the tank; when a preset suspension feature exists, identify the suspension parameters and suspension position of each preset suspension feature in the image inside the tank, where the suspension parameters include suspension edge information, suspension color information, and suspension transparency; based on the mapping relationship between each suspension parameter and the preset processing strategy, determine the suspension processing strategy corresponding to each preset suspension feature, where the preset processing strategy mapping relationship is the correspondence between the suspension parameter and the suspension processing strategy; based on the suspension processing strategy and suspension position corresponding to each suspension parameter, determine the suspension processing instruction, and drive the suspension processing equipment to process the preset suspension features existing in the mother liquid tank based on the suspension control instruction.

[0071] Specifically, the image inside the tank can be captured by an image acquisition device installed in the mother liquid tank and uploaded to the control system. Since the mother liquid needs to be circulated, the image acquisition device installed in the mother liquid tank can use a high-speed camera to capture the mother liquid in the mother liquid tank at a high frame rate. A feature recognition algorithm can be used to identify the suspended features contained in the image inside the tank. The feature recognition algorithm can be a scale-invariant feature transformation algorithm that can detect and describe local features in the image inside the tank; a directional gradient histogram algorithm that describes the suspended features by calculating the gradient direction histogram of the local area in the image inside the tank. Feature recognition algorithms such as convolutional neural networks and principal component analysis can also be used. The specific feature recognition algorithm is not specifically limited in the embodiments of this application, as long as it can identify the suspended features contained in the image inside the tank. The preset suspension characteristics can be suspended solids, suspended colloids, etc. Suspended solids and suspended colloids may increase the viscosity of the mother liquor, thereby increasing the flow resistance of the mother liquor in the circulation pipeline and the pumping process. The high-viscosity mother liquor requires greater power to maintain its flow, which may affect the efficiency of the mother liquor circulation process. In addition, suspended particles may form a sediment layer on the inner wall of the circulation pipeline, further reducing the circulation cross-sectional area of ​​the circulation pipeline and increasing the flow resistance. In severe cases, it may even cause the circulation pipeline to be blocked, which may affect the normal circulation of the mother liquor. In addition, suspended solids or colloids may also participate in or catalyze chemical reactions in the mother liquor, changing the reaction rate or products. If these reactions produce gas, it may cause the pressure in the tank to increase. Therefore, in order to maintain the stability of the pressure in the mother liquor tank and ensure the safety and efficiency of the mother liquor circulation process, it is usually necessary to properly treat the mother liquor containing suspended solids or colloids.

[0072] In addition to the preset suspension features, the mother liquor also contains other suspension features. These other suspension features generally do not affect the fluidity of the mother liquor. These other suspension features can be bubbles, microorganisms, aggregates of soluble substances, and so on. The preset suspension features contained in the tank in-can image can be identified from the suspension features using the scattered light method. After determining the preset suspension features contained in the tank in-can image, it is necessary to further identify the suspension parameters of the preset suspension features so that the preset suspension features present in the mother liquor can be processed based on the suspension parameters.

[0073] The edge information of the preset suspended feature in the in-tank image can be identified according to an edge detection algorithm. The edge detection algorithm can be Canny, Sobel, or the like, and the specific edge detection algorithm is not limited in the embodiments of the present application, as long as the edge contour corresponding to the preset suspended feature can be identified from the in-tank image. After the suspended edge information of the preset suspended feature is determined, the suspended region image can be determined based on the suspended edge information, and then the pixel value identification is performed on the suspended region image to determine the suspended color information corresponding to the preset suspended feature, wherein the suspended region image at least contains the preset suspended feature. The suspended transparency of the preset suspended feature can be viewed through an image editing software, wherein the image editing software can be Photoshop, and the specific image editing software is not limited in the embodiments of the present application, as long as the transparency channel of the suspended region image can be viewed. The suspended parameters of each preset suspended feature can be determined based on the above-mentioned manner.

[0074] Different suspended parameters correspond to different suspended processing strategies of the preset suspended feature. The preset processing strategy mapping relationship contains the suspended processing strategies corresponding to different suspended parameters, which can be determined by relevant staff according to experimental data and uploaded to the control system. The specific content is not limited in the embodiments of the present application, and can be adjusted or modified by relevant technical personnel according to the actual situation.

[0075] After the suspended processing strategy corresponding to each preset suspended feature is determined, the suspended processing instruction corresponding to each preset suspended feature is generated based on the suspended processing strategy and the suspended position corresponding to each preset suspended feature. Since the suspended parameters and the suspended position corresponding to each preset suspended feature are different, the suspended control instructions corresponding to different preset suspended features are different. The suspended processing device is a medicament feeding device, that is, a chemical medicament is injected into the mother liquor through a chemical processing method, and the chemical reaction between the chemical medicament and the suspended matter in the mother liquor is used to decompose the suspended matter in the mother liquor. Different suspended processing strategies correspond to different amounts of feeding medicaments.

[0076] The suspended processing strategy corresponding to each preset suspended feature is determined according to the identified suspended parameters of each preset suspended feature, rather than using a consistent suspended processing strategy for the preset suspended features with different suspended parameters, that is, by identifying and analyzing the specific suspended parameters of each preset suspended feature, the corresponding processing strategy for each preset suspended feature is selected accurately, which facilitates to improve the suspended matter processing efficiency and also facilitates to reduce unnecessary resource waste.

[0077] Further, when the number of the preset suspended features contained in the in-tank image is higher than the preset suspended number, the method provided in the embodiments of the present application further includes steps S1-S4, as shown in Figure 2

[0078] ​Step S1: obtaining a mother liquid movement rate, and determining a predicted movement area of ​​each preset suspension feature within a first preset time period based on the suspension parameters and the mother liquid movement rate of each preset suspension feature.

[0079] Specifically, the preset number of suspensions can be 3 or 5. The specific number is not specifically limited in the embodiment of the present application. When the number of preset suspension features is large, it may affect the execution efficiency of the suspension processing equipment. Therefore, when the number of preset suspension features is higher than the preset suspension number, further analysis and consideration are required.

[0080] Since the execution of the suspension processing strategy may not be timely and the mother liquid is always in a moving state, it is necessary to analyze the movement trajectory of the preset suspension feature in the future. The first preset time period is a period of time after the current moment. The duration corresponding to the first preset time period can be 8 seconds or 10 seconds. The specific duration is not specifically limited in the embodiment of this application. Since the suspension parameter can directly reflect the morphology of the preset suspension feature in the mother liquid, and the mother liquid movement rate can affect the position change of the suspended matter corresponding to the preset suspension feature, it is necessary to consider both the mother liquid movement rate and the suspension parameter when determining the predicted movement area corresponding to the preset suspension feature. Among them, the mother liquid movement rate can be monitored by measuring equipment such as a flow meter, and the determined suspension edge information and mother liquid movement rate data are then input into the data analysis software or model, and the algorithm is processed to predict the movement area of ​​the suspended matter in the future. The specific method is not specifically limited in the embodiment of this application, as long as the movement area of ​​the suspended matter corresponding to the preset suspension feature can be predicted. Based on the above method, the predicted movement area corresponding to each preset suspension feature can be determined.

[0081] Step S2: All predicted moving areas are superimposed to determine overlapping areas, and preset suspension features corresponding to the overlapping areas are determined as adjacent suspension features.

[0082] Specifically, after determining the predicted moving area corresponding to each preset suspension feature, each predicted moving area can be imported into a new layer based on the pixel position of each predicted moving area in the image inside the tank to obtain a suspension layer. Finally, multiple suspension layers are superimposed to determine the overlapping area. The overlapping area is the area where multiple suspension layers intersect. The pixel position of the predicted moving area in the image inside the tank can be the pixel position of the center point of the predicted moving area.

[0083] The preset suspension feature corresponding to the overlapping region is determined as a nearby suspension feature, and the number of preset suspension features contained in the in-tank image is not higher than the nearby suspension feature. For example, when the in-tank image contains 4 preset suspension features, after the overlapping region is determined according to the predicted movement region corresponding to each preset suspension feature, the nearby suspension feature corresponding to the overlapping region can be only 2, that is, the predicted movement region corresponding to the 2 preset suspension features does not have an intersection region with other predicted movement regions.

[0084] Step S3: Determine the region coincidence degree corresponding to each nearby suspension feature according to the predicted movement region of each nearby suspension feature and the overlapping region.

[0085] Specifically, for any nearby suspension feature, the area of the predicted movement region is identified, and the overlapping region area of the overlapping region is identified. The overlapping region area is compared with the area of the predicted movement region to determine the region coincidence degree corresponding to the predicted movement region. The greater the ratio of the overlapping region area to the area of the predicted movement region, the higher the corresponding region coincidence degree. There is a corresponding relationship between the area ratio and the region coincidence degree. Based on the corresponding relationship, the region coincidence degree corresponding to any area ratio can be determined. The specific content of the corresponding relationship is not limited in the embodiments of the present application, and can be determined by relevant staff according to experimental data and uploaded to the control system. Based on the above-mentioned manner, the region coincidence degree corresponding to each nearby suspension feature can be determined.

[0086] Step S4: Determine the nearby suspension feature with the highest region coincidence degree as the target suspension feature, and process each nearby suspension feature in the overlapping region by using the suspension processing strategy corresponding to the target suspension feature.

[0087] Specifically, all nearby suspension features are sorted according to the region coincidence degree corresponding to each nearby suspension feature, and the nearby suspension feature with the highest region coincidence degree is determined as the target suspension feature. The suspension processing strategy corresponding to the target suspension feature is obtained, and each nearby suspension feature in the overlapping region is processed by using the suspension processing strategy corresponding to the target suspension feature. At the same time, the suspension processing strategies corresponding to other nearby suspension features are removed from the working execution list of the suspension processing device, wherein the other nearby suspension features are the nearby suspension features other than the target suspension feature.

[0088] By analyzing the overlapping region of the predicted movement region corresponding to different suspensions, it is convenient to maximize the use of processing resources, that is, to avoid repeated processing of similar or adjacent regions, thereby facilitating the improvement of the utilization efficiency of the suspension processing resources.

[0089] Further, in order to promote the mixing of multiple nearby suspension features, the method provided in the embodiments of the present application further comprises:

[0090] According to the suspension position of each adjacent suspension feature, the suspension boundary area corresponding to all adjacent suspension features is determined, and each adjacent suspension feature is located on the boundary line of the suspension boundary area; the boundary size of the suspension boundary area is identified, and when the boundary size is greater than the preset boundary size, the size difference is determined based on the boundary size and the preset boundary size; based on the mapping relationship between the size difference and the stirring parameter, the stirring parameter corresponding to the size difference is determined, and the stirring parameter mapping relationship is the correspondence between the size difference and the stirring parameter, and the stirring parameter includes the stirring amplitude and the stirring rate; based on the overlapping area and the stirring parameter, the stirring instruction is determined, and the stirring rod in the mother liquid tank is driven to stir based on the stirring instruction.

[0091] Specifically, when the suspended matter in the mother liquor is unevenly distributed, the mother liquor can be stirred to help evenly disperse the particles, thereby improving the execution effect of the suspension treatment strategy. When using chemical agents to treat the target suspension features, the contact area between the chemical agents and the target suspension features can also be increased, thereby facilitating the improvement of the treatment effect. In addition, using a stirring rod to stir the mother liquor can also prevent the preset suspension features from gathering in large quantities and settling at the bottom of the mother liquor tank due to gravity.

[0092] Before performing a stirring process on adjacent suspended features, the distribution state of the adjacent suspended features can be analyzed based on the suspension position of each adjacent suspended feature. Different distribution states correspond to different stirring parameters. When determining the distribution state of adjacent suspended features, each adjacent suspended feature can be connected based on its suspension position to form a suspended boundary region. The distribution state of the adjacent suspended features can be determined by identifying the boundary size of the suspended boundary region. The distribution state can be dense or dispersed. When the boundary size is greater than a preset boundary size, the distribution state can be determined as dispersed. When the boundary size is not greater than the preset boundary size, the distribution state can be determined as dense.

[0093] When the distribution state is a dispersed state, a size difference is determined based on the boundary size and the preset boundary size. The larger the size difference, the higher the degree of dispersion. The corresponding stirring amplitude and stirring rate in the stirring parameters are also higher. The stirring parameter mapping relationship includes stirring parameters corresponding to different size differences. The specific content is not specifically limited in the embodiments of this application and can be determined by relevant staff based on experimental data and uploaded to the control system. Stirring the mother liquor in the mother liquor tank by a stirring rod facilitates the mixing of multiple adjacent suspension features, so that the suspended matter is evenly mixed or the dissolution is accelerated, thereby facilitating the improvement of the fluidity of the mother liquor circulation process.

[0094] Furthermore, in order to avoid the risks caused by the continuous increase in air pressure, the method provided in the embodiment of the present application also includes:

[0095] The internal air pressure in the mother liquid tank within the second preset time period is counted, and the air pressure change rate of the internal air pressure in the mother liquid tank within the second preset time period is determined; when the air pressure change rate is higher than the preset rate, based on the mapping relationship between the air pressure change rate and the overflow valve opening, the overflow valve opening corresponding to the air pressure change rate is determined, the overflow valve opening mapping relationship is the correspondence between the air pressure change rate and the overflow valve opening, and the overflow valve opening is the valve opening of the overflow pipe in the mother liquid tank.

[0096] Specifically, the second preset time period is a period of time before the current moment. The duration corresponding to the second preset time period can be 10 minutes or 20 minutes. The specific duration is not specifically limited in the embodiment of the present application. By statistically analyzing the air pressure in the tank collected during the second preset time period, it is convenient to determine the air pressure change rate of the air pressure in the tank during the second preset time period. When the air pressure change rate is not higher than the preset rate, it indicates that the air pressure in the tank is in a stable state, that is, when the air pressure in the tank is high, the air pressure in the tank can be restored to a safe range in a short time by adjusting the valve opening; when the air pressure change rate is higher than the preset rate, it indicates that the air pressure in the tank is in an unstable state, that is, when the air pressure in the tank is high, the air pressure in the tank cannot be restored to a safe range in a short time by adjusting the valve opening. At this time, while releasing the gas in the tank, the overflow valve opening can be adjusted to discharge the mother liquid from the mother liquid tank to achieve the goal of restoring the air pressure in the tank to a safe range in a short time.

[0097] The overflow valve opening mapping relationship can be used to determine the overflow valve opening corresponding to any air pressure change rate. The higher the air pressure change rate, the larger the corresponding overflow valve opening. The specific content of this mapping relationship is not specifically limited in the embodiments of this application and can be determined by relevant personnel based on historical experimental data. The overflow pipe is connected to the mother liquid tank. Since the mother liquid cannot be discharged directly, the overflow pipe can be connected to a temporary storage tank. When the internal air pressure in the mother liquid tank is low, the mother liquid in the temporary storage tank can be reintroduced into the mother liquid tank for mother liquid circulation.

[0098] Furthermore, when the gas pressure in the tank is low, in addition to reintroducing the mother liquid in the temporary storage tank into the mother liquid tank, the method provided in the embodiment of the present application further includes:

[0099] Obtain the feed amount and discharge amount within a third preset time period, and determine the circulation ratio between the feed amount and the discharge amount within the third preset time period; determine the predicted circulation ratio of the mother liquid tank within a fourth time period based on the circulation ratio; when the predicted circulation ratio is lower than the preset ratio, determine the predicted gas pressure difference based on the predicted circulation ratio and the preset ratio; determine the supplementary gas amount based on the predicted gas pressure difference, and generate a gas supplementary instruction based on the supplementary gas amount, and control the inert gas injection pipe to inject inert gas into the mother liquid tank based on the gas supplementary instruction.

[0100] Specifically, the third preset time period is a period of time before the current time, and the fourth preset time period is a period of time after the current time. The length of the third preset time period can be 60 minutes, and can also be 90 minutes. The length of the fourth preset time period is lower than that of the third preset time period, and the specific length is not limited in the embodiments of the present application. The feed amount is the injection amount when the mother liquor is injected into the mother liquor tank, and the discharge amount is the discharge amount when the mother liquor in the mother liquor tank is circulated. The third preset time period can include multiple change cycles, each change cycle includes one feeding operation and one discharging operation. The circulation ratio corresponding to each change cycle is determined based on the feed amount and the discharge amount corresponding to each change cycle. The predicted circulation ratio is obtained by analyzing the circulation ratio corresponding to each change cycle to predict the circulation ratio of the mother liquor tank in the fourth time period.

[0101] When the predicted circulation ratio is lower than the preset ratio, it indicates that the feed amount of the mother liquor tank in the fourth preset time period is reduced, and the discharge amount is increased. At this time, it can cause the gas pressure in the tank to be reduced. When the gas pressure in the tank is low, it can affect the flowability of the mother liquor. Therefore, the gas pressure in the tank can be restored to a safe range by injecting mother liquor or inert gas into the mother liquor tank.

[0102] Different predicted gas pressure differences correspond to different amounts of supplemental gas. After injecting inert gas into the mother liquor tank according to the amount of supplemental gas, the gas pressure in the tank can be restored to a safe range. Thus, the safety hazard caused by excessively low gas pressure can be avoided. The inert gas injection pipe is in communication with the mother liquor tank. The inert gas can be introduced into the mother liquor tank through the inert gas injection pipe by a gas supplementing instruction.

[0103] An embodiment of the present application provides a control system, as shown in Figure 3 Figure 3 The control system 300 shown in the figure includes a processor 301 and a memory 303. The processor 301 and the memory 303 are connected, such as through a bus 302. Optionally, the control system 300 can also include a transceiver 304. It should be noted that in actual application, the transceiver 304 is not limited to one, and the structure of the control system 300 does not constitute a limitation on the embodiments of the present application.

[0104] ​Processor 301 can be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. Processor 301 can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0105] Bus 302 may include a path for transmitting information between the above components. Bus 302 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. Bus 302 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, Figure 3 The fact that only one line is used does not mean that there is only one bus or one type of bus.

[0106] The memory 303 may be a ROM (Read Only Memory) or other type of static storage device that can store static information and instructions, a RAM (Random Access Memory) or other type of dynamic storage device that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0107] The memory 303 is used to store application code for executing the solution of the present application, and the execution is controlled by the processor 301. The processor 301 is used to execute the application code stored in the memory 303 to implement the content shown in the above method embodiment.

[0108] The control system includes, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), and in-vehicle terminals (e.g., in-vehicle navigation terminals), as well as fixed terminals such as digital TVs and desktop computers. Servers are also possible. Figure 3 The control system shown is merely an example and should not limit the functions and scope of use of the embodiments of the present application.

[0109] An embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer-readable storage medium is run on a computer, the computer can execute the corresponding contents of the aforementioned method embodiment.

[0110] An embodiment of the present application provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the method in any of the above embodiments is implemented.

[0111] It should be understood that although the steps in the flowcharts of the accompanying drawings are shown in sequence as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the flowcharts of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0112] The above description is only part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A mother liquid tank pressure control method based on mother liquid circulation, characterized in that: include: Obtaining a tank pressure parameter, wherein the tank pressure parameter is the tank pressure of the mother liquid tank; When the pressure parameter in the tank is higher than a preset pressure threshold, determining a pressure release amount based on the pressure parameter in the tank and the preset pressure threshold; determining a valve opening based on the pressure release amount, and regulating the opening of the pressure control valve based on the valve opening; Among them, also include: Acquire an image of the interior of the tank, and identify whether the image of the interior of the tank has a preset suspension feature; When there are preset suspension features, identifying the suspension parameters and suspension position of each preset suspension feature in the tank interior image, wherein the suspension parameters include suspension edge information, suspension color information, and suspension transparency; Determining a suspension processing strategy corresponding to each preset suspension feature based on a mapping relationship between each suspension parameter and a preset processing strategy, wherein the preset processing strategy mapping relationship is a corresponding relationship between the suspension parameter and the suspension processing strategy; Determining a suspension processing instruction based on the suspension processing strategy and suspension position corresponding to each suspension parameter, and driving the suspension processing device to process the preset suspension characteristics in the mother liquid tank based on the suspension control instruction; When the number of the preset suspension features included in the image inside the tank is greater than the preset suspension number, the method further includes: Obtaining a mother liquid movement rate, and determining a predicted movement region for each preset suspension feature within a first preset time period based on the suspension parameters of each preset suspension feature and the mother liquid movement rate; superimposing all predicted movement regions to determine an overlapping region, and determining the preset suspension feature corresponding to the overlapping region as an adjacent suspension feature; Determining the degree of overlap of the regions corresponding to each adjacent suspended feature based on the predicted movement region of each adjacent suspended feature and the overlapping region; The adjacent suspended feature with the highest regional overlap is determined as the target suspended feature, and each adjacent suspended feature is processed using the suspension processing strategy corresponding to the target suspended feature and the overlapping area.

2. The method for controlling the pressure of a mother liquid tank based on mother liquid circulation according to claim 1, characterized in that: Also includes: Determine, based on the suspension position of each adjacent suspension feature, a suspension boundary region corresponding to all adjacent suspension features, wherein each adjacent suspension feature is located on a boundary line of the suspension boundary region; identifying a border size of the floating border area, and when the border size is greater than a preset border size, determining a size difference based on the border size and the preset border size; Determining stirring parameters corresponding to the size difference based on the mapping relationship between the size difference and the stirring parameter, wherein the stirring parameter mapping relationship is a corresponding relationship between the size difference and the stirring parameter, and the stirring parameter includes a stirring amplitude and a stirring rate; A stirring instruction is determined based on the overlapping area and the stirring parameter, and a stirring rod in the mother liquid tank is driven to stir based on the stirring instruction.

3. The method for controlling the pressure of a mother liquid tank based on mother liquid circulation according to claim 1, characterized in that: Also includes: Counting the internal gas pressure in the mother liquid tank within a second preset time period, and determining a rate of change of the internal gas pressure in the mother liquid tank within the second preset time period; When the air pressure change rate is higher than the preset rate, the overflow valve opening corresponding to the air pressure change rate is determined based on the mapping relationship between the air pressure change rate and the overflow valve opening. The overflow valve opening mapping relationship is the correspondence between the air pressure change rate and the overflow valve opening. The overflow valve opening is the valve opening of the overflow pipe in the mother liquid tank.

4. The method for controlling the pressure of a mother liquid tank based on mother liquid circulation according to claim 1, characterized in that: Also includes: Obtaining a feed rate and a discharge rate within a third preset time period, and determining a circulation ratio between the feed rate and the discharge rate within the third preset time period; determining a predicted circulation ratio of the mother liquid tank in a fourth time period based on the circulation ratio; When the predicted cycle ratio is lower than a preset ratio, determining a predicted air pressure difference based on the predicted cycle ratio and the preset ratio; The amount of supplementary gas is determined based on the predicted gas pressure difference, a gas supplementation instruction is generated based on the supplementary gas amount, and an inert gas injection pipe is controlled based on the gas supplementation instruction to inject inert gas into the mother liquid tank.

5. A control system, characterized in that: The control system includes: at least one processor; Memory; At least one application, wherein the at least one application is stored in a memory and configured to be executed by at least one processor, and the at least one application is configured to: execute a mother liquid tank pressure control method based on mother liquid circulation according to any one of claims 1-4.

6. A computer-readable storage medium, characterized in that include: A computer program is stored which can be loaded by a processor and executed by a mother liquid tank pressure control method based on mother liquid circulation according to any one of claims 1 to 4.

7. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, implements the steps of a mother liquid tank pressure control method based on mother liquid circulation according to any one of claims 1 to 4.

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