Intelligent control method and system for industrial automation

Abstract

The invention discloses an intelligent control method and system for industrial automation, and relates to the technical field of papermaking industry automation, and the intelligent control method comprises the steps of 1, paper pulp information acquisition, 2, headbox operation regulation and control, 3, net part sizing regulation and control and 4, net part replacement treatment. All devices in the headbox are intelligently regulated and controlled, the vortex generation rate of an overflow chamber is reduced, the pressure in the headbox is regulated and controlled, so that the quality of paper pulp is guaranteed, all meshes of a net part are intelligently cleaned before the paper pulp enters the net part, the water spraying rate of all the cleaning meshes of the net part is intelligently regulated and controlled, and the quality of the paper pulp is improved. When impurities such as fibers and filler particles are removed, damage of water jet to the papermaking mesh is reduced, and damage detection of the papermaking mesh can be carried out once in each batch, so that the production efficiency of a paper mill is improved, and the production quality of the paper mill is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of papermaking industry automation, and in particular to an intelligent control method and system for industrial automation. Background Art

[0002] With the progress of industrial civilization and science and technology, the manufacturing industry is facing increasingly fierce competition from all sides. As a high-energy-consuming and high-asset investment enterprise, papermaking enterprises must reduce production costs and improve production efficiency as much as possible. At the same time, they must also ensure product quality and delivery time. Industrial automation control can well meet these requirements. Therefore, it is necessary to carry out industrial automation control in paper mills.

[0003] The prior art, such as the invention patent application with announcement number: CN109972449A, discloses a method and a system for intelligently injecting fungicides in the papermaking process, and the method includes: the method is applied to the fungicide injection system; the main control device detects whether the fungicide injection time has arrived at the current moment; the injection device controls the storage device to inject the target dose of the target fungicide to the designated dosing point according to the control signal. It can be seen that the implementation of this invention can realize the intelligent and automatic injection of fungicides, reduce the input of manpower, improve the accuracy and reliability of injecting fungicides, and is conducive to improving the sterilization efficiency and success rate of fungicides, thereby helping to improve the papermaking finished product rate.

[0004] Prior art, such as the invention patent application with announcement number: CN111335068B, discloses a method for effectively controlling odor in a papermaking process, the method comprising: this invention provides a chemical that can effectively control the generation of odor, and in the implementation process, the mass ratio of various components is reasonably controlled so that the component after the chemical reaction is an organic oxide, which will not affect the application of chemicals in other equipment. The chemical not only has high sterilization efficiency and fast sterilization speed, and it is difficult for microorganisms to develop drug resistance, but is also extremely easy to degrade, has passed FDA certification, has no adverse effects on the environment, and is non-ecologically toxic.

[0005] It can be seen from the above scheme that the current intelligent control system of the paper mill lacks certain attention to the intelligent control of the headbox based on various data of the pulp. The use method of the traditional headbox generally fixes the various data of the overflow chamber and the groove roller in the headbox, or relies on manual experience to set them. Since the various data in the pulp after beating in each batch are not exactly the same, according to the use method of the traditional headbox, the vortex generation rate of the overflow chamber will be increased, and the internal pressure in the headbox will be increased, thereby reducing the quality of the pulp. At the same time, there is a lack of attention to the intelligent cleaning and intelligent replacement of each papermaking mesh in the mesh part. The papermaking mesh is a key component for paper sheet forming, and its surface is prone to accumulate impurities such as fibers and filler particles. These impurities will affect the forming quality and dehydration effect of the paper sheet, and the papermaking mesh is easily corroded during use, causing the papermaking mesh to lose its original function, thereby reducing the production efficiency and production quality of the paper mill. Summary of the invention

[0006] The purpose of the present invention is to provide an intelligent control method and system for industrial automation, which solves the problems existing in the background technology.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: The first aspect of the present invention provides an intelligent control method for industrial automation, including: Step 1. Pulp information acquisition: Before the paper mill enters the pulp papermaking process, the concentration value, moisture content, long fiber content and short fiber content of each batch of pulp belonging to the paper mill are obtained, and the target tear resistance and target smoothness of each batch of production paper belonging to the paper mill are obtained.

[0008] Step 2. Headbox operation control: Analyze the target parameter values ​​of each device of the headbox of the paper mill when receiving each batch of pulp, wherein each device includes an overflow chamber and a groove roller.

[0009] Step 3. sizing control of the mesh: obtain the appearance monitoring image of each mesh hole of each papermaking mesh of the mesh section of the paper mill through a robotic arm, screen the cleaning mesh holes of each papermaking mesh of the mesh section of the paper mill, analyze the water gun spray rate of the cleaning equipment of each cleaning mesh hole of each papermaking mesh of the mesh section of the paper mill, and after the cleaning is completed, the headbox of the paper mill slurries each batch of pulp to each papermaking mesh of the mesh section, and after the headbox of the paper mill completes the sizing process of each batch of pulp, obtain the appearance monitoring image of each mesh hole of each papermaking mesh of the mesh section of the paper mill after sizing each batch, and screen the damaged papermaking meshes of the mesh section of the paper mill after sizing each batch.

[0010] Step 4. Wire replacement processing: Send the damaged papermaking wires of the wire department of the paper mill after sizing each batch to the quality manager of the paper mill.

[0011] The second aspect of the present invention provides an intelligent control system for executing the intelligent control method of industrial automation, including: a pulp information acquisition module, which is used to obtain the concentration value, moisture content, long fiber content and short fiber content of each batch of pulp belonging to the paper mill before the paper mill enters the pulp papermaking process, and obtain the target tear resistance and target smoothness of each batch of production paper belonging to the paper mill.

[0012] The headbox operation control module is used to analyze the target parameter values ​​of various devices of the headbox of the paper mill when receiving each batch of pulp, and the various devices include: an overflow chamber and a groove roller.

[0013] The mesh sizing control module is used to obtain the appearance monitoring image of each mesh hole of each papermaking mesh of the mesh section of the paper mill through a mechanical arm, screen the cleaning mesh holes of each papermaking mesh of the mesh section of the paper mill, analyze the water gun spray rate of the cleaning equipment of each cleaning mesh hole of each papermaking mesh of the mesh section of the paper mill, and after the cleaning is completed, the headstock box of the paper mill slurries each batch of pulp to each papermaking mesh of the mesh section, and after the headstock box of the paper mill completes the sizing process of each batch of pulp, obtain the appearance monitoring image of each mesh hole of each papermaking mesh of the mesh section of the paper mill after sizing each batch, and screen the damaged papermaking meshes of the mesh section of the paper mill after sizing each batch.

[0014] The wire replacement processing module is used to send each damaged papermaking wire of the wire department of the paper mill after sizing each batch to the quality manager of the paper mill.

[0015] The beneficial effects of the present invention are as follows: (1) Step 1 of the present invention is to obtain pulp information, which is used to obtain various data of each batch of pulp before entering the pulp papermaking process in the paper mill, so as to facilitate subsequent analysis.

[0016] (2) Step 2 of the present invention controls the operation of the headbox. By using various data of each batch of pulp belonging to the paper mill, the various devices inside the headbox are intelligently controlled to reduce the vortex generation rate of the overflow chamber, and the pressure in the headbox is controlled to prevent the pressure from being too high or too low, thereby ensuring the quality of the pulp.

[0017] (3) Step 3 of the present invention is to control the sizing of the mesh. Before the pulp enters the mesh, each mesh hole of the mesh is cleaned intelligently, and the water injection rate of each cleaning mesh hole of the mesh is controlled intelligently. This can remove impurities such as fibers and filler particles while reducing the damage of the papermaking mesh caused by the water injection. After each batch of pulp is processed on the mesh, a damage detection of the papermaking mesh is performed on each batch, thereby improving the production efficiency and production quality of the papermaking mill.

[0018] (4) Step 4 of the present invention, i.e., the replacement of the wire, facilitates the quality manager of the paper mill to replace any damaged papermaking wires in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the method flow of the present invention.

[0021] Figure 2 It is a schematic diagram of the system module of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Reference Figure 1 As shown, the first aspect of the present invention provides an intelligent control method for industrial automation, including: Step 1. Pulp information acquisition: before the paper mill enters the pulp papermaking process, the concentration value, moisture content, long fiber content and short fiber content of each batch of pulp belonging to the paper mill are obtained, and the target tear resistance and target smoothness of each batch of production paper belonging to the paper mill are obtained.

[0024] In a specific embodiment, the concentration value, moisture content, long fiber content and short fiber content of each batch of pulp belonging to the paper mill are obtained by: obtaining the concentration value of each batch of pulp belonging to the paper mill through a pulp concentration measuring instrument, obtaining the moisture content of each batch of pulp belonging to the paper mill through a moisture content detector, and obtaining the long fiber content and short fiber content of each batch of pulp belonging to the paper mill through a fiber measuring instrument.

[0025] In a specific embodiment, the target tear resistance and target smoothness of each batch of production paper belonging to the paper mill are obtained by a specific method: the quality manager of the paper mill presets the target tear resistance and target smoothness of each batch of production paper belonging to the paper mill, thereby obtaining the target tear resistance and target smoothness of each batch of production paper belonging to the paper mill.

[0026] Step 1 of the present invention is to obtain pulp information, which is used to obtain various data of each batch of pulp before entering the pulp papermaking process in the paper mill, so as to facilitate subsequent analysis.

[0027] Step 2. Headbox operation control: Analyze the target parameter values ​​of each device of the headbox of the paper mill when receiving each batch of pulp, wherein each device includes an overflow chamber and a groove roller.

[0028] Step 2 of the present invention is to regulate the operation of the headbox. Through various data of each batch of pulp belonging to the paper mill, various devices inside the headbox are intelligently regulated to reduce the vortex generation rate of the overflow chamber, and the pressure in the headbox is regulated to prevent the pressure from being too high or too low, thereby ensuring the quality of the pulp.

[0029] Step 3. sizing control of the mesh: obtain the appearance monitoring image of each mesh hole of each papermaking mesh of the mesh section of the paper mill through a robotic arm, screen the cleaning mesh holes of each papermaking mesh of the mesh section of the paper mill, analyze the water gun spray rate of the cleaning equipment of each cleaning mesh hole of each papermaking mesh of the mesh section of the paper mill, and after the cleaning is completed, the headbox of the paper mill slurries each batch of pulp to each papermaking mesh of the mesh section, and after the headbox of the paper mill completes the sizing process of each batch of pulp, obtain the appearance monitoring image of each mesh hole of each papermaking mesh of the mesh section of the paper mill after sizing each batch, and screen the damaged papermaking meshes of the mesh section of the paper mill after sizing each batch.

[0030] In a specific embodiment, the appearance monitoring image of each mesh of each papermaking net of the net department of the paper mill is obtained by a specific acquisition method: the appearance monitoring image of each mesh of each papermaking net of the net department of the paper mill is obtained by an ultra-high-definition camera installed on a robotic arm.

[0031] In a specific embodiment, the appearance monitoring images of each mesh of each papermaking net of the paper mill's net department after each batch of sizing are obtained, and the specific acquisition method is: the appearance monitoring images of each mesh of each papermaking net of the paper mill's net department after each batch of sizing are obtained by an ultra-high-definition camera installed on a robotic arm.

[0032] In a specific embodiment of the present invention, the target parameter adjustment values ​​of each device of the headbox of the paper mill when receiving each batch of pulp are analyzed, and the specific analysis method is: Step 2.1. Groove roller operation analysis: Analyze the target speed value of the groove roller of the headbox of the paper mill when receiving each batch of pulp.

[0033] Step 2.2. Overflow chamber spraying rate analysis: Calculate the initial spraying target value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp.

[0034] Step 2.3. Overflow Chamber Inlet Angle Analysis: Evaluate the inlet angle of the overflow chamber of the paper mill's headbox when receiving each batch of pulp.

[0035] In a specific embodiment of the present invention, the target speed value of the groove roller of the headbox of the paper mill when receiving each batch of pulp is analyzed by a specific analysis method: according to the long fiber content and short fiber content of each batch of production paper of the paper mill, the fiber speed adjustment parameter value of the groove roller of each batch of pulp of the paper mill is analyzed. , where x represents the batch number, , y is a positive integer greater than 2.

[0036] The concentration speed adjustment parameter values ​​of the groove rollers in each concentration value range of the pulp are obtained from the local database, and the concentration speed adjustment parameter values ​​of the groove rollers of each batch of pulp belonging to the paper mill are mapped according to the concentration values ​​of the pulp belonging to each batch of the paper mill. .

[0037] Obtain the original speed value A of the groove roller from the local database, and analyze the speed target value of the groove roller of the headbox of the paper mill when receiving each batch of pulp .

[0038] It should be noted that the higher the concentration value, the lower the corresponding concentration speed adjustment parameter value.

[0039] It should be noted that the local database is used to store the concentration speed adjustment parameter values ​​of the grooved roller in each concentration value interval, the original speed value of the grooved roller, the ideal long fiber content of the pulp corresponding to each target tear resistance interval, the ideal short fiber content of the pulp corresponding to each target smoothness interval, the long fiber speed adjustment parameter values ​​of the grooved roller corresponding to each long fiber excessive hazard coefficient interval, the initial spraying rate value of the overflow chamber corresponding to each set operating speed, the spraying rate value adjustment parameter value corresponding to each moisture content interval, the inlet angle adjustment parameter value corresponding to each overpressure conduction coefficient interval, the inlet angle decrease value corresponding to each eddy current hazard coefficient interval, the initial inlet angle of the overflow chamber of the headbox of the paper mill, the water gun jet rate increase value corresponding to each dirty volume interval, the usage time of each papermaking net of the net department of the paper mill, the initial water gun jet rate of the cleaning equipment corresponding to each usage time interval, the initial surface area of ​​the orifice of each mesh of each papermaking net of the net department of the paper mill after sizing in each batch, and the mesh corrosion hazard coefficient threshold.

[0040] In a specific embodiment of the present invention, the fiber speed adjustment parameter value of the groove roller of each batch of pulp belonging to the paper mill is analyzed, and the specific analysis method is: obtain the ideal long fiber content of pulp corresponding to each target tear resistance interval and the ideal short fiber content of pulp corresponding to each target smoothness interval from the local database, and map the ideal long fiber content of pulp of each batch of paper belonging to the paper mill according to the target tear resistance and target smoothness of each batch of production paper belonging to the paper mill. and ideal short fiber content of pulp.

[0041] According to the long fiber content of each batch of paper produced by the paper mill , calculate the long fiber excess hazard coefficient of each batch of pulp belonging to the paper mill , where e is a natural constant. The long fiber speed adjustment parameter values ​​of the groove roller corresponding to each long fiber excessive hazard coefficient interval are obtained from the local database, and the long fiber speed adjustment parameter values ​​of the groove roller of each batch of pulp belonging to the paper mill are mapped. .

[0042] According to the short fiber content of each batch of paper produced by the paper mill, the short fiber speed adjustment parameter value of the groove roller of each batch of pulp in the paper mill is obtained by similar analysis. .

[0043] Calculate the fiber speed adjustment parameter of the grooved roller for each batch of pulp in the paper mill .

[0044] It should be noted that the greater the hazard coefficient of excessive long fibers, the greater the corresponding long fiber speed adjustment parameter value of the groove roller.

[0045] In a specific embodiment of the present invention, the initial spraying target value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp is calculated by a specific calculation method: the set running speed of each batch of production paper processed by the paper mill is obtained from the paper machine terminal, the initial spraying rate value of the overflow chamber corresponding to each set running speed is obtained from the local database, and the initial spraying rate value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp is obtained by mapping. .

[0046] The spraying rate adjustment parameter values ​​corresponding to each moisture content interval are obtained from the local database. According to the moisture content of each batch of pulp belonging to the paper mill, the spraying rate adjustment parameter values ​​of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp are mapped. , calculate the initial spray target value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp .

[0047] In a specific embodiment of the present invention, the inlet angle of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp is evaluated, and the specific evaluation method is: based on the initial spraying target value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp and the initial shotcrete rate , calculate the eddy current hazard factor of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp .

[0048] Obtain the inlet angle drop value corresponding to each eddy current hazard coefficient interval from the local database, and map it to obtain the inlet angle drop value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp .

[0049] According to the original speed value A of the groove roller and the speed target value of the groove roller of the headbox of the paper mill when receiving each batch of pulp , calculate the overpressure conductance of the grooved rollers in the overflow chamber of the headbox of the paper mill when receiving each batch of pulp .

[0050] Obtain the inlet angle adjustment parameter value corresponding to each overpressure conduction coefficient interval from the local database, and map it to obtain the inlet angle adjustment parameter value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp .

[0051] Obtain the initial inlet angle D of the overflow chamber of the headbox of the paper mill from the local database, and evaluate the inlet angle of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp .

[0052] Step 3 of the present invention is to regulate the sizing of the mesh. Before the pulp enters the mesh, each mesh hole of the mesh is intelligently cleaned, and the water injection rate of each cleaning mesh hole of the mesh is intelligently regulated. While removing impurities such as fibers and filler particles, the damage to the papermaking mesh caused by the water injection is reduced. After each batch of pulp is processed on the mesh, a damage detection of the papermaking mesh is performed on each batch, thereby improving the production efficiency of the paper mill and improving the production quality of the paper mill.

[0053] Step 4. Wire replacement processing: Send the damaged papermaking wires of the wire department of the paper mill after sizing each batch to the quality manager of the paper mill.

[0054] In a specific embodiment of the present invention, the specific screening method for screening the cleaning meshes of each papermaking mesh of the mesh section belonging to the paper mill is: based on the appearance monitoring image of each mesh of each papermaking mesh of the mesh section belonging to the paper mill, determine whether the inside of each mesh of each papermaking mesh of the mesh section belonging to the paper mill is dirty through image dirt recognition technology; if the inside of a mesh of a papermaking mesh of the mesh section belonging to the paper mill is dirty, mark the mesh as a cleaning mesh, thereby screening the cleaning meshes of each papermaking mesh of the mesh section belonging to the paper mill.

[0055] In a specific embodiment, the method for judging whether the inside of each mesh hole of each papermaking net of the net section of the paper mill is dirty is as follows: the existing image dirt recognition technology can be used to judge whether the inside of each mesh hole of each papermaking net of the net section of the paper mill is dirty.

[0056] In a specific embodiment of the present invention, the water gun spray rate of the cleaning equipment of each cleaning mesh of each papermaking mesh of the mesh section of the paper mill is analyzed, and the specific analysis method is: a high-definition camera on a robotic arm is used to perform a three-dimensional stereo scan on the inside of each cleaning mesh of each papermaking mesh of the mesh section of the paper mill, so as to obtain the dirt volume inside each cleaning mesh of each papermaking mesh of the mesh section of the paper mill.

[0057] The water gun jet rate increase value corresponding to each dirty volume interval is obtained from the local database, and the water gun jet rate increase value of each cleaning mesh of each papermaking mesh of the mesh department of the paper mill is mapped to obtain , where n represents the number of each papermaking wire, , m is a positive integer greater than 2, i represents the number of each cleaning mesh, , j is a positive integer greater than 2.

[0058] The usage time of each papermaking net in the paper mill's net department and the initial water gun spray rate of the cleaning equipment corresponding to each usage time interval are obtained from the local database, and the initial water gun spray rate of each papermaking net in the paper mill's net department is mapped. .

[0059] Analyze the water gun spray rate of the cleaning equipment of each cleaning mesh of each papermaking mesh in the mesh department of the paper mill .

[0060] In a specific embodiment, the volume of dirt inside each cleaning mesh of each papermaking mesh of the mesh section of a paper mill is obtained by a specific method: the existing three-dimensional stereo scanning technology is relatively mature, and the volume of dirt inside each cleaning mesh of each papermaking mesh of the mesh section of a paper mill can be obtained by the existing three-dimensional stereo scanning technology.

[0061] In a specific embodiment of the present invention, the damaged papermaking nets of the paper mill's net department after each batch of sizing are screened, and the specific screening method is: based on the appearance monitoring images of each mesh hole of each papermaking net of the paper mill's net department after each batch of sizing, the orifice and surface area of ​​each mesh hole of each papermaking net of the paper mill's net department after each batch of sizing are obtained through image recognition technology.

[0062] If the opening of a certain mesh of a papermaking mesh after a certain batch of sizing in the mesh department of a papermaking mill is combined with the opening of another mesh, the papermaking mesh will be marked as a damaged papermaking mesh.

[0063] Obtain the initial surface area of ​​each mesh opening of each papermaking mesh after sizing each batch in the mesh department of the paper mill from the local database , where t represents the number of each mesh, , w is a positive integer greater than 2, based on the surface area of ​​the openings of each mesh of each papermaking mesh after sizing in each batch of papermaking meshes of the papermaking mesh department of the papermaking mill , calculate the mesh corrosion hazard coefficient of each papermaking mesh after sizing each batch of papermaking mesh in the paper mill .

[0064] A mesh corrosion hazard coefficient threshold is obtained from a local database. If the mesh corrosion hazard coefficient of a papermaking mesh after a batch of sizing in the mesh department of the paper mill is greater than the mesh corrosion hazard coefficient threshold, the papermaking mesh is marked as a damaged papermaking mesh.

[0065] In summary, the damaged papermaking wires of the wire department of the paper mill after sizing in each batch are summarized.

[0066] In a specific embodiment, the method for obtaining the openings and surface areas of each mesh hole of each papermaking net after each batch of sizing by the net department of the paper mill is as follows: by using existing image recognition technology, the openings and surface areas of each mesh hole of each papermaking net after each batch of sizing by the net department of the paper mill can be obtained.

[0067] Step 4 of the present invention is to replace the wire part, so that the person in charge of quality control of the paper mill can replace the damaged papermaking wires in time.

[0068] Reference Figure 2 As shown, the second aspect of the present invention provides an intelligent control system for executing the intelligent control method of industrial automation, including: a pulp information acquisition module, a flow box operation control module, a wire sizing control module, a wire replacement processing module and a local database.

[0069] It should be noted that the pulp information acquisition module is connected to the headbox operation control module, the headbox operation control module is connected to the wire sizing control module, the wire sizing control module is connected to the wire replacement processing module, and the local database is connected to the headbox operation control module and the wire sizing control module.

[0070] The pulp information acquisition module is used to obtain the concentration value, moisture content, long fiber content and short fiber content of each batch of pulp belonging to the paper mill before the paper mill enters the pulp papermaking process, and obtain the target tear resistance and target smoothness of each batch of production paper belonging to the paper mill.

[0071] The headbox operation control module is used to analyze the target parameter values ​​of various devices of the headbox of the paper mill when receiving each batch of pulp, and the various devices include: an overflow chamber and a groove roller.

[0072] The mesh sizing control module is used to obtain the appearance monitoring image of each mesh hole of each papermaking mesh of the mesh section of the paper mill through a mechanical arm, screen the cleaning mesh holes of each papermaking mesh of the mesh section of the paper mill, analyze the water gun spray rate of the cleaning equipment of each cleaning mesh hole of each papermaking mesh of the mesh section of the paper mill, and after the cleaning is completed, the headstock box of the paper mill slurries each batch of pulp to each papermaking mesh of the mesh section, and after the headstock box of the paper mill completes the sizing process of each batch of pulp, obtain the appearance monitoring image of each mesh hole of each papermaking mesh of the mesh section of the paper mill after sizing each batch, and screen each damaged papermaking mesh of the mesh section of the paper mill after sizing each batch.

[0073] The wire replacement processing module is used to send damaged papermaking wires of the wire department of the papermaking plant after sizing each batch to the quality manager of the papermaking plant.

[0074] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they shall all fall within the protection scope of the present invention.

Claims

1. An intelligent control method for industrial automation, characterized in that: include: Step 1. Pulp information acquisition: before the paper mill enters the pulp papermaking process, the concentration value, moisture content, long fiber content and short fiber content of each batch of pulp belonging to the paper mill are obtained, and the target tear resistance and target smoothness of each batch of production paper belonging to the paper mill are obtained; Step 2. Headbox operation control: analyzing the target parameter values ​​of each device of the headbox of the paper mill when receiving each batch of pulp, wherein each device includes an overflow chamber and a groove roller; Step 3. sizing control of the mesh: obtaining appearance monitoring images of each mesh of each papermaking mesh of the mesh of the paper mill through a mechanical arm, screening each cleaning mesh of each papermaking mesh of the mesh of the paper mill, analyzing the water gun spray rate of the cleaning equipment of each cleaning mesh of each papermaking mesh of the mesh of the paper mill, and after the cleaning is completed, sizing each batch of pulp to each papermaking mesh of the mesh by the headbox of the paper mill, and after the sizing of each batch of pulp is completed by the headbox of the paper mill, obtaining appearance monitoring images of each mesh of each papermaking mesh of the mesh of the paper mill after sizing each batch, and screening each damaged papermaking mesh of the mesh of the paper mill after sizing each batch; Step 4. Wire replacement processing: Send the damaged papermaking wires of the wire department of the paper mill after sizing each batch to the quality manager of the paper mill.

2. The intelligent control method for industrial automation according to claim 1, characterized in that: The specific analysis method for analyzing the target parameter adjustment values ​​of each device of the headbox of the paper mill when receiving each batch of pulp is as follows: Step 2.

1. Groove roller operation analysis: Analyze the target speed value of the groove roller of the headbox of the paper mill when receiving each batch of pulp; Step 2.

2. Overflow chamber spraying rate analysis: Calculate the initial spraying target value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp; Step 2.

3. Overflow Chamber Inlet Angle Analysis: Evaluate the inlet angle of the overflow chamber of the paper mill's headbox when receiving each batch of pulp.

3. The intelligent control method for industrial automation according to claim 2, characterized in that: The specific analysis method for analyzing the target rotation speed of the groove roller of the headbox of the paper mill when receiving each batch of pulp is as follows: According to the long fiber content and short fiber content of each batch of paper produced by the paper mill, the fiber speed adjustment parameter value of the groove roller of each batch of pulp in the paper mill is analyzed. , where x represents the batch number, , y is a positive integer greater than 2; The concentration speed adjustment parameter values ​​of the groove rollers in each concentration value range of the pulp are obtained from the local database, and the concentration speed adjustment parameter values ​​of the groove rollers of each batch of pulp belonging to the paper mill are mapped according to the concentration values ​​of the pulp belonging to each batch of the paper mill. ; Obtain the original speed value A of the groove roller from the local database, and analyze the speed target value of the groove roller of the headbox of the paper mill when receiving each batch of pulp .

4. The intelligent control method for industrial automation according to claim 3, characterized in that: The specific analysis method for analyzing the fiber speed adjustment parameter value of the groove roller of each batch of pulp belonging to the paper mill is as follows: The ideal long fiber content of pulp corresponding to each target tear resistance interval and the ideal short fiber content of pulp corresponding to each target smoothness interval are obtained from the local database. According to the target tear resistance and target smoothness of each batch of production paper belonging to the paper mill, the ideal long fiber content of pulp belonging to each batch of the paper mill is mapped. and ideal short fiber content of pulp; According to the long fiber content of each batch of paper produced by the paper mill , calculate the excessive long fiber hazard coefficient of each batch of pulp belonging to the paper mill , where e is a natural constant. The long fiber speed adjustment parameter values ​​of the groove roller corresponding to each long fiber excessive hazard coefficient interval are obtained from the local database, and the long fiber speed adjustment parameter values ​​of the groove roller of each batch of pulp belonging to the paper mill are mapped. ; According to the short fiber content of each batch of paper produced by the paper mill, the short fiber speed adjustment parameter value of the groove roller of each batch of pulp in the paper mill is obtained by similar analysis. ; Calculate the fiber speed adjustment parameter of the grooved roller for each batch of pulp in the paper mill .

5. The intelligent control method for industrial automation according to claim 3, characterized in that: The specific calculation method for calculating the initial spray target value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp is as follows: Obtain the set running speed of each batch of production paper processed by the paper mill from the paper machine terminal, obtain the initial spraying rate value of the overflow chamber corresponding to each set running speed from the local database, and map the initial spraying rate value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp ; The spraying rate adjustment parameter values ​​corresponding to each moisture content interval are obtained from the local database. According to the moisture content of each batch of pulp belonging to the paper mill, the spraying rate adjustment parameter values ​​of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp are mapped. , calculate the initial spray target value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp .

6. The intelligent control method for industrial automation according to claim 5, characterized in that: The specific evaluation method for evaluating the inlet angle of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp is as follows: According to the initial spray target value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp and the initial shotcrete rate , calculate the eddy current hazard factor of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp ; Obtain the inlet angle drop value corresponding to each eddy current hazard coefficient interval from the local database, and map it to obtain the inlet angle drop value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp ; According to the original speed value A of the groove roller and the speed target value of the groove roller of the headbox of the paper mill when receiving each batch of pulp , calculate the overpressure conductance of the grooved rollers in the overflow chamber of the headbox of the paper mill when receiving each batch of pulp ; Obtain the inlet angle adjustment parameter value corresponding to each overpressure conduction coefficient interval from the local database, and map it to obtain the inlet angle adjustment parameter value of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp ; Obtain the initial inlet angle D of the overflow chamber of the headbox of the paper mill from the local database, and evaluate the inlet angle of the overflow chamber of the headbox of the paper mill when receiving each batch of pulp .

7. The intelligent control method for industrial automation according to claim 1, characterized in that: The specific screening method of the cleaning meshes of each papermaking net of the net department of the screening paper mill is as follows: Based on the appearance monitoring images of each mesh hole of each papermaking net in the net section of the paper mill, and through the image dirt recognition technology, it is judged whether the inside of each mesh hole of each papermaking net in the net section of the paper mill is dirty. If the inside of a mesh hole of a papermaking net in the net section of the paper mill is dirty, the mesh hole is marked as a cleaning mesh hole, thereby screening the cleaning mesh holes of each papermaking net in the net section of the paper mill.

8. The intelligent control method for industrial automation according to claim 3, characterized in that: The specific analysis method of analyzing the water gun spray rate of each cleaning device of each cleaning mesh of each papermaking mesh of the mesh department of the paper mill is as follows: A high-definition camera on the robot arm performs a three-dimensional scan of the inside of each cleaning mesh hole of each papermaking mesh of the mesh department of the paper mill, thereby obtaining the volume of dirt inside each cleaning mesh hole of each papermaking mesh of the mesh department of the paper mill; The water gun jet rate increase value corresponding to each dirty volume interval is obtained from the local database, and the water gun jet rate increase value of each cleaning mesh of each papermaking mesh of the mesh department of the paper mill is mapped to obtain , where n represents the number of each papermaking wire, , m is a positive integer greater than 2, i represents the number of each cleaning mesh, , j is a positive integer greater than 2; The usage time of each papermaking net in the paper mill's net department and the initial water gun spray rate of the cleaning equipment corresponding to each usage time interval are obtained from the local database, and the initial water gun spray rate of each papermaking net in the paper mill's net department is mapped. ; Analyze the water gun spray rate of the cleaning equipment of each cleaning mesh of each papermaking mesh in the mesh department of the paper mill .

9. The intelligent control method for industrial automation according to claim 8, characterized in that: The specific screening method for screening damaged papermaking wires of the wire department of the paper mill after sizing in each batch is as follows: Based on the appearance monitoring images of each mesh hole of each papermaking mesh after each batch of sizing by the mesh department of the papermaking mill, the hole opening and surface area of ​​each mesh hole of each papermaking mesh after each batch of sizing by the mesh department of the papermaking mill are obtained through image recognition technology; If the opening of a certain mesh of a papermaking mesh after a batch of sizing in the mesh department of a papermaking mill is combined with the opening of another mesh, the papermaking mesh shall be marked as a damaged papermaking mesh; Obtain the initial surface area of ​​each mesh opening of each papermaking mesh after sizing each batch in the mesh department of the paper mill from the local database , where t represents the number of each mesh, , w is a positive integer greater than 2, based on the surface area of ​​the openings of each mesh of each papermaking mesh after sizing in each batch of papermaking meshes of the papermaking mesh department of the papermaking mill , calculate the mesh corrosion hazard coefficient of each papermaking mesh after sizing each batch of papermaking mesh in the papermaking mesh department of the papermaking mill ; A mesh corrosion hazard coefficient threshold is obtained from a local database. If the mesh corrosion hazard coefficient of a papermaking mesh after a batch of sizing in the mesh department of the papermaking mill is greater than the mesh corrosion hazard coefficient threshold, the papermaking mesh is marked as a damaged papermaking mesh; In summary, the damaged papermaking wires of the wire department of the paper mill after sizing in each batch are summarized.

10. An intelligent control system for executing an intelligent control method for industrial automation according to any one of claims 1 to 9, characterized in that: include: The pulp information acquisition module is used to obtain the concentration value, moisture content, long fiber content and short fiber content of each batch of pulp belonging to the paper mill before the paper mill enters the pulp papermaking process, and obtain the target tear resistance and target smoothness of each batch of production paper belonging to the paper mill; A headbox operation control module is used to analyze the target parameter values ​​of various devices of the headbox of the paper mill when receiving each batch of pulp, wherein the various devices include an overflow chamber and a groove roller; A mesh sizing control module is used to obtain, through a mechanical arm, an appearance monitoring image of each mesh hole of each papermaking mesh of the mesh section of the paper mill, screen each cleaning mesh hole of each papermaking mesh of the mesh section of the paper mill, analyze the water gun spray rate of the cleaning equipment of each cleaning mesh hole of each papermaking mesh of the mesh section of the paper mill, and after the cleaning is completed, the headbox of the paper mill slurries each batch of pulp to each papermaking mesh of the mesh section, and after the headbox of the paper mill slurries each batch of pulp, obtains an appearance monitoring image of each mesh hole of each papermaking mesh of the mesh section of the paper mill after sizing each batch, and screens each damaged papermaking mesh of the mesh section of the paper mill after sizing each batch; The wire replacement processing module is used to send each damaged papermaking wire of the wire department of the paper mill after sizing each batch to the quality manager of the paper mill.

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