Quick valve control method and system based on PLC optimization

Abstract

The invention discloses a quick valve control method and system based on PLC optimization, and relates to the technical field of valve control. The method comprises the steps that key working parameters of a valve are collected in real time through a sensor; the collected original data are preprocessed, and effective data related to valve control are screened out; based on the screened effective data related to valve control, the PLC performs optimization according to a set control strategy; the PLC generates an opening and closing instruction of the valve according to the optimized control strategy; the actual working state of the valve is continuously monitored through the sensor, a feedback signal is transmitted back to the PLC, and if the deviation between feedback data and a set value is large, the PLC dynamically adjusts a control strategy. Accurate monitoring of key parameters of the valve is achieved, the opening degree of the valve is adjusted immediately when pressure, temperature or flow is abnormal, and therefore the overload or underpressure condition is avoided, and stability and safety of equipment operation are guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of valve control technology, in particular to a fast valve control method and system based on PLC optimization. Background Art

[0002] With the continuous advancement of industrial automation technology, valve control systems are playing an increasingly important role in key industries such as energy, chemical industry, and electric power. Especially in heating and steam extraction systems, accurate control of valves is directly related to the stability and safety of the entire system. In this context, PLC (Programmable Logic Controller), as the core of automation control, has gradually become an indispensable component of valve control systems. PLC can achieve efficient and accurate valve control and ensure safe and stable operation of the system by real-time monitoring and adjusting key parameters such as valve opening, flow, and temperature. However, although existing PLC control systems have been widely used in many applications, in actual operation, many systems still face technical bottlenecks such as PLC crashes, program loss, and feedback signal loss, which seriously affect the accuracy of valve control and the reliability of the system.

[0003] At present, in some large power plants and industrial equipment, PLC-based valve control systems still have many common problems. For example, the PLC control system in Units 1 and 2 of a company faces frequent failures such as freezing, valve position loss, and SD card program loss. These problems not only increase the maintenance cost of the equipment, but may also cause serious safety accidents. These failures are mainly due to the insufficient stability of the control system hardware and software, the long PLC scanning cycle, the slow system response speed, and the lack of an effective redundant backup mechanism. In addition, the control accuracy and valve response time of the existing system have not met the requirements, especially when the valve is closed quickly and adjusted accurately, there are great technical challenges. Especially for complex systems such as cogeneration units, the control requirements of valves are more stringent, requiring the system to have not only high-precision adjustment capabilities, but also rapid response capabilities to ensure the stability and safety of the unit's heating.

[0004] In view of the above problems, the present invention proposes technical solutions such as replacing and upgrading the PLC control system, optimizing the control logic, and improving the feedback mechanism to improve the stability, control accuracy, and response speed of the system. By upgrading and transforming the existing valve control system, problems such as PLC freeze and program loss can be effectively avoided, ensuring real-time monitoring and precise adjustment of the valve. Summary of the invention

[0005] In view of the above-mentioned problems, the present invention is proposed.

[0006] Therefore, the problem to be solved by the present invention is: how to solve the problem of unstable valve control caused by frequent system freezes, valve position information loss and SD card program damage in the existing PLC valve control system.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a fast valve control method based on PLC optimization, comprising: collecting key working parameters of the valve in real time through sensors, and inputting the collected data into a PLC controller; the PLC controller preprocesses the collected raw data and screens out valid data related to valve control; based on the screened valid data related to valve control, the PLC controller optimizes according to a set control strategy to determine the optimal control parameters and valve action mode; the PLC controller generates valve opening and closing instructions according to the optimized control strategy to control the valve actuator to open and close; the actual working state of the valve is continuously monitored through sensors, and the feedback signal is transmitted back to the PLC controller. If the feedback data deviates greatly from the set value, the PLC controller dynamically adjusts the control strategy.

[0008] As a preferred solution of the fast valve control method based on PLC optimization described in the present invention, the key operating parameters of the valve include the switch state, pressure, temperature and flow rate of the valve.

[0009] As a preferred solution of the fast valve control method based on PLC optimization described in the present invention, the preprocessing includes filtering and denoising; the screening out of valid data related to valve control includes comparing the expected value of the valve working state with the actually collected data; if the valve is in an open state, but the flow, pressure or temperature shows abnormalities, the data is judged to be valid and used to adjust the control strategy, combined with filtering, to remove noise data, and to screen out valid data that can reflect the actual working state of the valve through a set threshold.

[0010] As a preferred solution of the fast valve control method based on PLC optimization described in the present invention, wherein: the effective data related to valve control after screening includes modeling using the working parameters of the valve, analyzing the relationship between the working parameters of the valve and the valve control, including the relationship between flow and valve opening, the relationship between pressure and flow, and the impact of temperature changes on the valve state; the PLC makes real-time judgments on the data within a set threshold range to screen out abnormal working conditions. If the pressure, temperature and flow are abnormal, the PLC judges it as a potential risk and avoids equipment damage by adjusting the valve opening; the valve opening is adjusted according to the control valve to stabilize the pressure, flow and temperature within the predetermined threshold range.

[0011] As a preferred solution of the fast valve control method based on PLC optimization described in the present invention, the PLC controller is optimized according to the set control strategy, including adjusting the valve opening to control the flow or pressure, controlling the valve switching time, avoiding the valve responding too fast or too slow, and controlling the strength of the valve actuator, so that the valve moves smoothly and without damage.

[0012] As a preferred solution of the fast valve control method based on PLC optimization described in the present invention, the determination of the optimal control parameters and valve action mode includes that if the pressure exceeds the preset upper pressure limit, the PLC controller should immediately reduce the valve opening, reduce the flow rate, and relieve the pipeline pressure. If the pressure continues to rise, the valve will be quickly closed to prevent equipment failure and trigger an alarm; if the pressure is lower than the preset lower pressure limit, the PLC controller will increase the valve opening, increase the pressure, gradually open the valve, and slowly increase the flow rate until the pressure returns to the normal range; if the temperature exceeds the preset upper temperature limit, the PLC controller will automatically reduce the valve opening, thereby reducing the heat flow and lowering the temperature. If the temperature continues to rise, the valve will be quickly closed. The valve cuts off the fluid channel to prevent overheating and damage to the equipment; if the temperature is lower than the preset lower temperature limit, the PLC controller gradually increases the valve opening to allow more fluid to flow through and accelerate the temperature increase of the system. If the temperature continues to drop, the PLC starts the preheating device to jointly increase the temperature; if the flow exceeds the preset upper flow limit, the PLC controller reduces the valve opening to reduce the flow and avoid overload. If the flow continues to increase, the PLC quickly closes the valve to limit the flow and avoid equipment damage or safety risks; if the flow is lower than the preset lower flow limit, the PLC controller automatically increases the valve opening to increase the flow; the PLC controller generates valve opening and closing instructions based on the optimized control strategy and controls the valve actuator to open and close.

[0013] As a preferred solution of the fast valve control method based on PLC optimization described in the present invention, the method includes transmitting the feedback signal back to the PLC controller, including real-time monitoring of the valve opening, pressure, temperature and flow before and after PCL control, comparing with the set threshold range, calculating the deviation of each parameter, if the deviation exceeds the set tolerance range, the PLC triggers the dynamic adjustment mechanism, and according to the deviation, the PLC adjusts the valve opening again according to the set control strategy; the PLC generates corresponding control instructions, controls the valve actuator to act, and continues to monitor the actual state of the valve through the sensor, if the adjusted feedback data still has a large deviation from the target value, the PLC further adjusts the strategy to form a closed-loop feedback control; when the deviation is large and cannot be solved by adjustment, the PLC triggers an alarm and an emergency shutdown is carried out for processing.

[0014] Another object of the present invention is to provide a system of a fast valve control method based on PLC optimization, which can solve the problem of fast valve control based on PLC optimization by constructing a fast valve control system.

[0015] To solve the above technical problems, the present invention provides the following technical solutions: a fast valve control system based on PLC optimization, including a data acquisition module, a data processing module, an optimization control module, a valve control module and a feedback module; the data acquisition module is used to collect the key working parameters of the valve in real time through sensors, and input the collected data into the PLC controller; the data processing module is used for the PLC controller to pre-process the collected raw data and screen out the valid data related to the valve control; the optimization control module is used for the PLC controller to optimize according to the set control strategy based on the screened valid data related to the valve control, and determine the optimal control parameters and valve action mode; the valve control module is used for the PLC controller to generate the opening and closing instructions of the valve according to the optimized control strategy, and control the valve actuator to open and close; the feedback module is used to continue to monitor the actual working state of the valve through sensors, and transmit the feedback signal back to the PLC controller. If the feedback data deviates greatly from the set value, the PLC controller dynamically adjusts the control strategy.

[0016] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the fast valve control method based on PLC optimization as described above when executing the computer program.

[0017] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the fast valve control method based on PLC optimization as described above.

[0018] The beneficial effects of the present invention are as follows: the fast valve control method based on PLC optimization provided by the present invention realizes accurate monitoring of key valve parameters by implementing real-time data acquisition and preprocessing, so that when the pressure, temperature or flow is abnormal, the system can immediately adjust the valve opening, thereby avoiding overload or undervoltage conditions, ensuring the stability and safety of equipment operation, especially in high-demand occasions such as cogeneration, significantly improving the control performance of the valve. By optimizing the control strategy, the system freeze and valve position information loss problems in the prior art are effectively solved, thereby significantly improving the stability, reliability and data integrity of the valve control system. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 A flow chart of a fast valve control method based on PLC optimization provided in the first embodiment of the present invention.

[0021] Figure 2 A structural diagram of a fast valve control system based on PLC optimization provided in the second embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Example 1

[0025] Reference Figure 1 , which is the first embodiment of the present invention, and this embodiment provides a fast valve control method based on PLC optimization, including: collecting key working parameters of the valve in real time through sensors, and inputting the collected data into a PLC controller; the PLC controller preprocesses the collected raw data and screens out valid data related to valve control; based on the screened valid data related to valve control, the PLC controller optimizes according to the set control strategy to determine the optimal control parameters and valve action mode; the PLC controller generates valve opening and closing instructions according to the optimized control strategy, and controls the valve actuator to open and close; the actual working state of the valve is continuously monitored through sensors, and the feedback signal is transmitted back to the PLC controller. If the feedback data deviates greatly from the set value, the PLC controller dynamically adjusts the control strategy.

[0026] S1. Collect the key working parameters of the valve in real time through sensors, and input the collected data into the PLC controller.

[0027] The key operating parameters of the valve include the valve's switch status, pressure, temperature and flow rate.

[0028] S2. The PLC controller pre-processes the collected raw data and selects the valid data related to valve control.

[0029] Preprocessing includes filtering and denoising, which is completed by comparing the expected value of the valve working state with the actual collected data.

[0030] If the valve is in the open state, but the flow, pressure or temperature display is abnormal, the data is judged to be valid and used to adjust the control strategy, combined with filtering, to remove noise data, and filter out valid data that can reflect the actual working status of the valve through the set threshold.

[0031] S3. Based on the screened valid data related to valve control, the PLC controller is optimized according to the set control strategy to determine the optimal control parameters and valve action mode.

[0032] Use the valve's operating parameters (such as pressure, temperature, flow, etc.) to build a model and analyze the relationship between the valve's operating parameters and valve control, including the relationship between flow and valve opening, the relationship between pressure and flow, and the impact of temperature changes on valve status.

[0033] PLC uses the set threshold range (such as upper and lower pressure limits, flow range, temperature range, etc.) to make real-time judgments on data and screen out abnormal working conditions. If the pressure, temperature and flow are abnormal, PLC will judge it as a potential risk and adjust the valve opening to avoid equipment damage. The threshold range is set according to the normal working range of historical data.

[0034] According to the control valve, the valve opening is adjusted to stabilize the pressure, flow and temperature within the predetermined threshold range. The valve is within the range of 0% to 100% travel, the fast closing time is less than 0.8 seconds, the valve control accuracy, the normal opening and closing time is 10 seconds to 90 seconds, and it is adjustable, and the PLC scanning cycle is less than 200ms.

[0035] Adjust the valve opening to control flow or pressure, control the valve opening and closing time to avoid the valve responding too quickly or too slowly, control the strength of the valve actuator, and ensure that the valve moves smoothly and without damage.

[0036] If the pressure exceeds the preset upper pressure limit, the PLC controller should immediately reduce the valve opening, reduce the flow rate, and relieve the pipeline pressure. If the pressure continues to rise, the valve should be closed quickly to prevent equipment failure and trigger an alarm.

[0037] If the pressure is lower than the preset lower pressure limit, the PLC controller increases the valve opening, increases the pressure, and the valve gradually opens, slowly increasing the flow rate until the pressure returns to the normal range.

[0038] If the temperature exceeds the preset upper temperature limit, the PLC controller should automatically reduce the valve opening, thereby reducing the heat flow and lowering the temperature. If the temperature continues to rise, the valve will be quickly closed to cut off the fluid channel to prevent overheating and damage to the equipment.

[0039] If the temperature is lower than the preset lower temperature limit, the PLC controller gradually increases the valve opening to allow more fluid to flow through, accelerating the increase in system temperature. In order to prevent sudden temperature changes, the PLC can slowly increase the valve opening to steadily increase the temperature. If the temperature continues to drop, the PLC starts the preheating device (such as a heater or heat exchanger) to collaboratively increase the temperature.

[0040] If the flow exceeds the preset upper flow limit, the PLC controller reduces the valve opening to reduce the flow and avoid overload. If the flow continues to increase, the PLC quickly closes the valve to limit the flow and avoid equipment damage or safety risks.

[0041] If the flow rate is lower than the preset lower limit, the PLC controller automatically increases the valve opening to increase the flow rate. In order to avoid equipment inadaptability due to sudden large fluctuations in flow rate, the PLC can gradually increase the valve opening to allow the flow rate to rise steadily.

[0042] The PLC controller generates valve opening and closing instructions based on the optimized control strategy and controls the valve actuator to open and close.

[0043] S4, PLC controller generates valve opening and closing instructions according to the optimized control strategy, and controls the valve actuator to open and close.

[0044] S5. Continue to monitor the actual working status of the valve through the sensor and transmit the feedback signal back to the PLC controller. If the feedback data deviates greatly from the set value, the PLC controller dynamically adjusts the control strategy.

[0045] The valve opening, pressure, temperature and flow before and after PCL control are monitored in real time, compared with the set threshold range, and the deviation of each parameter is calculated. If the deviation exceeds the set tolerance range (for example, the deviation exceeds 10%, which is set according to historical data), the PLC triggers the dynamic adjustment mechanism. According to the deviation, the PLC adjusts the valve opening again according to the set control strategy.

[0046] The PLC generates corresponding control instructions to control the valve actuator to move, and continues to monitor the actual status of the valve through sensors. If the adjusted feedback data still deviates significantly from the target value, the PLC further adjusts the strategy to form a closed-loop feedback control.

[0047] When the deviation is large and cannot be resolved through adjustment, the PLC triggers an alarm and the machine is shut down for emergency processing.

[0048] The actual working status of the valve can be monitored through sensors, and the feedback signal can be transmitted back to the PLC controller. If the deviation between the feedback signal and the set value exceeds the tolerance range, the PLC will trigger a dynamic adjustment mechanism to ensure that the system maintains real-time monitoring and can respond in time to avoid abnormal operations caused by the loss of feedback signals. This dynamic adjustment mechanism ensures that the system can automatically adjust the control strategy when a fault occurs, preventing the risk of freezing or program loss.

[0049] The PLC controller is optimized according to the set control strategy, and involves the adjustment of multiple control parameters (such as valve opening, flow, pressure, etc.). The optimized control strategy can ensure that the system remains stable under variable working conditions. In addition, in the abnormal state of the valve, the PLC can automatically adjust the valve opening and dynamically update the control strategy based on the feedback information, thereby avoiding the crash caused by system instability.

[0050] If the adjusted feedback data still deviates significantly from the target value, the PLC further adjusts the strategy to form a closed-loop feedback control mechanism, further emphasizing the system's fault tolerance. When the feedback data deviates significantly, the PLC will not freeze or stop running, but will continue to adjust through closed-loop control to ensure that the system can work stably under abnormal conditions. This helps avoid problems such as program loss due to abnormal data or PLC freezes.

[0051] Example 2

[0052] Reference Figure 2 , which is the second embodiment of the present invention, is different from the previous embodiment in that it provides a fast valve control system based on PLC optimization, including: a data acquisition module 100, a data processing module 200, an optimization control module 300, a valve control module 400 and a feedback module 500.

[0053] The data acquisition module 100 is used to collect key operating parameters of the valve in real time through sensors, and input the collected data into the PLC controller.

[0054] The data processing module 200 is used by the PLC controller to pre-process the collected raw data and filter out valid data related to valve control.

[0055] The optimization control module 300 is used to optimize the PLC controller according to the set control strategy based on the screened valid data related to the valve control, and determine the optimal control parameters and valve action mode.

[0056] The valve control module 400 is used by the PLC controller to generate valve opening and closing instructions according to the optimized control strategy, and control the valve actuator to open and close.

[0057] The feedback module 500 is used to continue to monitor the actual working state of the valve through the sensor and transmit the feedback signal back to the PLC controller. If the feedback data deviates greatly from the set value, the PLC controller dynamically adjusts the control strategy.

[0058] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0059] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0060] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0061] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0062] Embodiment 3 is the third embodiment of the present invention. It is different from the first two embodiments in that it is used to verify the technical effects adopted in the present invention so as to verify the real effects of the method.

[0063] Traditional PLC control methods are usually based on simple control logic, such as PID control, or rely on periodic monitoring and adjustment (usually based on fixed time interval scanning, and lack of sufficient redundancy and feedback mechanism). This method has a long response time and low adjustment accuracy, and is easily limited by the PLC scanning cycle and hardware performance. In the event of equipment failure or extreme environmental conditions, traditional valves may cause overload or equipment damage, and common problems include loss of valve position information and program crashes.

[0064] The method of the present invention and the traditional method are used for simultaneous detection.

[0065] This embodiment uses the traditional method and the method of the present invention to perform detection simultaneously, and the detection comparison results are shown in the following Table 1:

[0066] Table 1 Comparison table between traditional method and method of the present invention

[0067]

[0068]

[0069] The method of the present invention has significant advantages over the traditional method, especially in terms of response speed, accuracy, system stability and equipment safety. The problems of the traditional method such as freezing and information loss are effectively solved in the present invention, thereby significantly improving the reliability and performance of the valve control system.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A fast valve control method based on PLC optimization, characterized in that: include, The key working parameters of the valve are collected in real time through sensors, and the collected data is input into the PLC controller; The PLC controller pre-processes the collected raw data and selects the valid data related to valve control; Based on the screened valid data related to valve control, the PLC controller optimizes according to the set control strategy to determine the optimal control parameters and valve action mode; The PLC controller generates valve opening and closing instructions based on the optimized control strategy and controls the valve actuator to open and close; The actual working status of the valve is continuously monitored through the sensor, and the feedback signal is transmitted back to the PLC controller. If the feedback data deviates greatly from the set value, the PLC controller dynamically adjusts the control strategy.

2. The fast valve control method based on PLC optimization as claimed in claim 1, characterized in that: The key operating parameters of the valve include the valve's switch state, pressure, temperature and flow rate.

3. The fast valve control method based on PLC optimization as claimed in claim 2, characterized in that: The preprocessing includes filtering and denoising; The screening out of the valid data related to the valve control includes comparing the expected value of the valve working state with the actually collected data; If the valve is in the open state, but the flow, pressure or temperature display is abnormal, the data is judged to be valid and used to adjust the control strategy, combined with filtering, to remove noise data, and filter out valid data that can reflect the actual working status of the valve through the set threshold.

4. The fast valve control method based on PLC optimization as claimed in claim 3, characterized in that: The effective data related to valve control after screening includes modeling using the working parameters of the valve, analyzing the relationship between the working parameters of the valve and the valve control, including the relationship between flow and valve opening, the relationship between pressure and flow, and the impact of temperature changes on valve status; PLC makes real-time judgments on data within the set threshold range and screens out abnormal working conditions. If the pressure, temperature and flow are abnormal, PLC determines it as a potential risk and adjusts the valve opening to avoid equipment damage. Adjust the valve opening according to the control valve to stabilize the pressure, flow and temperature within the predetermined threshold range.

5. The fast valve control method based on PLC optimization as claimed in claim 4, characterized in that: The PLC controller is optimized according to the set control strategy, including adjusting the valve opening to control the flow or pressure, controlling the valve opening and closing time to avoid the valve responding too fast or too slow, and controlling the strength of the valve actuator to ensure that the valve moves smoothly and without damage.

6. The fast valve control method based on PLC optimization as claimed in claim 5, characterized in that: The determination of the optimal control parameters and valve action mode includes that if the pressure exceeds the preset upper pressure limit, the PLC controller should immediately reduce the valve opening, reduce the flow rate, and reduce the pipeline pressure. If the pressure continues to rise, the valve will be quickly closed to prevent equipment failure and trigger an alarm; If the pressure is lower than the preset lower pressure limit, the PLC controller increases the valve opening, increases the pressure, and the valve gradually opens, slowly increasing the flow rate until the pressure returns to the normal range; If the temperature exceeds the preset upper temperature limit, the PLC controller should automatically reduce the valve opening, thereby reducing the heat flow and lowering the temperature. If the temperature continues to rise, the valve will be quickly closed to cut off the fluid channel to prevent overheating and damage to the equipment. If the temperature is lower than the preset lower temperature limit, the PLC controller gradually increases the valve opening to allow more fluid to flow through, accelerating the increase in system temperature. If the temperature continues to drop, the PLC starts the preheating device to collaboratively increase the temperature. If the flow exceeds the preset upper flow limit, the PLC controller reduces the valve opening to reduce the flow and avoid overload. If the flow continues to increase, the PLC quickly closes the valve to limit the flow and avoid equipment damage or safety risks. If the flow rate is lower than the preset lower limit, the PLC controller automatically increases the valve opening to increase the flow rate; The PLC controller generates valve opening and closing instructions based on the optimized control strategy and controls the valve actuator to open and close.

7. The fast valve control method based on PLC optimization as claimed in claim 6, characterized in that: The said includes transmitting feedback signals back to the PLC controller including real-time monitoring of valve opening, pressure, temperature and flow before and after PCL control, comparing with the set threshold range, calculating the deviation of each parameter, if the deviation exceeds the set tolerance range, the PLC triggers a dynamic adjustment mechanism, and according to the deviation, the PLC adjusts the valve opening again according to the set control strategy; The PLC generates corresponding control instructions to control the valve actuator to move, and continues to monitor the actual status of the valve through the sensor. If the adjusted feedback data still deviates greatly from the target value, the PLC further adjusts the strategy to form a closed-loop feedback control. When the deviation is large and cannot be resolved through adjustment, the PLC triggers an alarm and the machine is shut down for emergency processing.

8. A system using the fast valve control method based on PLC optimization as claimed in any one of claims 1 to 7, characterized in that: It comprises a data acquisition module (100), a data processing module (200), an optimization control module (300), a valve control module (400) and a feedback module (500); The data acquisition module (100) is used to collect key operating parameters of the valve in real time through sensors, and input the collected data into a PLC controller; The data processing module (200) is used by the PLC controller to pre-process the collected raw data and filter out valid data related to valve control; The optimization control module (300) is used to optimize the PLC controller according to the set control strategy based on the screened effective data related to valve control, and determine the optimal control parameters and valve action mode; The valve control module (400) is used for the PLC controller to generate valve opening and closing instructions according to the optimized control strategy, and control the valve actuator to open and close; The feedback module (500) is used to continue to monitor the actual working state of the valve through the sensor and transmit the feedback signal back to the PLC controller. If the feedback data deviates greatly from the set value, the PLC controller dynamically adjusts the control strategy.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the fast valve control method based on PLC optimization described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the fast valve control method based on PLC optimization described in any one of claims 1 to 7 are implemented.

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