Valve opening and closing control system

Abstract

The invention discloses a valve opening and closing control system, which relates to the technical field of industrial automation control and comprises a magnetic driving module, a parameter sensing module, a flow compensation operation module, an energy recovery and conversion module and a storage and power supply management module. The flow compensation value can be automatically calculated and adjusted in real time according to changes of parameters such as temperature and pressure of a medium in a pipeline, the opening degree of the valve is accurately adjusted, it is ensured that the set flow can be stably output under different working conditions, the stability of the production process is improved, and the problems of resource waste and product quality caused by flow fluctuation are reduced; the energy recovery and conversion module can convert generated kinetic energy and potential energy into electric energy and store the electric energy in the valve closing stage, energy recovery and reutilization are achieved, energy consumption of the system is reduced, and the energy utilization rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial automation control, and specifically to a valve opening and closing control system. Background Art

[0002] In modern industrial production, valves, as key components for controlling the flow of fluid media in pipeline systems, are widely used in many fields such as petroleum, chemical industry, electric power, and metallurgy. With the continuous improvement of industrial automation and the increasing requirements for the stability and safety of the production process, the performance and intelligent level of valve opening and closing control systems have become important factors affecting production efficiency, product quality, and enterprise economic benefits. For example, in chemical production, precisely controlling the opening and closing of valves can ensure that chemical reactions occur under appropriate conditions, avoiding production accidents and product quality problems caused by unstable flow rates; in the power system, the reliable operation of valves is crucial for ensuring the stable supply of energy.

[0003] Currently, most existing valve control systems rely on traditional mechanical transmission mechanisms. This design not only increases the complexity of the system but also brings significant problems, specifically:

[0004] Firstly, the contact between mechanical transmission components will cause inevitable frictional losses. After long-term operation, the wear will be aggravated, reducing the transmission efficiency and increasing the failure rate.

[0005] Secondly, the traditional system lacks effective flow compensation means and cannot respond in a timely manner when facing fluctuations in the parameters of the medium in the pipeline, thus affecting the stability of the flow output and being unfavorable for maintaining the continuity of production and the consistency of product quality.

[0006] Finally, the existing technology lacks the recovery and reuse of energy, which causes the kinetic energy and potential energy generated during the valve opening and closing process to be wasted, neither conforming to the concept of energy conservation and emission reduction nor making full use of resources.

[0007] In summary, the existing valve opening and closing control systems have obvious defects in terms of flow control accuracy and driving mode safety and cannot meet the stringent requirements of modern industrial production. Therefore, it is urgent to develop a valve opening and closing control system with high-precision flow control and safe and reliable driving. Summary of the Invention

[0008] The purpose of the present invention is to make up for the deficiencies of the prior art and provide a valve opening and closing control system. It can drive the valve spool by adopting magnetic coupling drive technology, and at the same time, an intelligent flow compensation algorithm is built into the control system. When the temperature, pressure and flow parameters of the medium in the pipeline change, the system can not only transmit power without contact through magnetic drive, but also automatically calculate the flow compensation according to the parameter changes, adjust the valve opening in real time, ensure the stable output of the flow, guarantee the stability of the production process, and make the whole system achieve efficient and stable flow control.

[0009] To solve the above technical problems, the present invention provides the following technical solution: a valve opening and closing control system, which consists of: a magnetic drive module, a parameter sensing module, a flow compensation operation module, an energy recovery and conversion module, a storage and power supply management module;

[0010] The magnetic drive module is composed of a magnetic coupler and a motor. The power generated by the motor operation is transmitted to the valve spool in a non-contact manner through the magnetic coupler to realize the opening and closing operation of the valve. This module avoids the friction loss and leakage hidden danger of traditional mechanical transmission, has high transmission efficiency, stable operation, and does not generate electric sparks during operation, which is suitable for various dangerous environments. At the same time, its operation data is fed back to the flow compensation operation module to provide a basis for flow regulation;

[0011] The parameter sensing module includes a temperature sensor, a pressure sensor and a flow sensor, which accurately collect the temperature T, pressure P and flow Q data of the medium in the pipeline in real time, and transmit these data to the flow compensation operation module to provide raw data support for flow compensation calculation, ensuring that the system can be adjusted according to the actual working conditions;

[0012] The flow compensation operation module is built with a flow compensation algorithm. It receives the temperature, pressure and flow data transmitted by the parameter sensing module, as well as the operation data feedback from the magnetic drive module. According to these data, it automatically calculates the flow compensation value ΔQ required due to parameter changes by using the flow compensation algorithm, and sends an instruction to the magnetic drive module to accurately adjust the valve opening, ensuring that the set flow can be stably output under different working conditions and maintaining the stability of the production process. The flow compensation algorithm is: ΔQ = k 1 (T - T 0 ) + k 2 (P - P 0 ) + k 3 (Q - Q 0 ), where k 1 , k 2 , k 3 are the compensation coefficients of temperature, pressure and flow respectively, and T 0 , P 0 , Q 0They are the initial set values of temperature, pressure, and flow rate respectively. At the same time, a wear correction coefficient k is introduced. w , to correct the influence of the wear degree W of the valve on the flow rate. Finally, the flow rate compensation value is optimized to: ΔQ final = ΔQ(1 + k w W);

[0013] During the valve closing stage, the energy recovery and conversion module converts the kinetic energy and potential energy generated when the valve closes into electrical energy. The converted electrical energy is transmitted to the storage and power supply management module to achieve the recycling and reuse of energy, effectively reducing the system energy consumption.

[0014] The storage and power supply management module consists of energy storage elements and a power supply management circuit. It receives and stores the electrical energy transmitted from the energy recovery and conversion module, and is also responsible for managing the power supply of the entire system. When the system needs electrical energy, such as when the magnetic drive module opens the valve, this module can stably output electrical energy according to the demand to ensure the normal operation of all parts of the system. Moreover, this module can also work in coordination with the flow rate compensation operation module to optimize the operation strategy of the system according to the energy consumption situation and electrical energy storage capacity of the system, further improving the energy utilization rate.

[0015] Furthermore, the flow rate compensation operation module sends instructions to the magnetic drive module to precisely adjust the valve opening to ensure that a set flow rate Q can be stably output under different working conditions. d , maintaining the stability of the production process. The set flow rate Q d and the relationship between the current flow rate Q and the flow rate compensation value ΔQ final satisfy: Q d = Q + ΔQ final .

[0016] Even further, during the valve closing stage, the energy recovery and conversion module converts the kinetic energy E k and potential energy E p generated when the valve closes into electrical energy E e . The converted electrical energy is transmitted to the storage and power supply management module to achieve the recycling and reuse of energy. Among them, the energy conversion is E e = c 1 E k + c 2 E p , c 1 and c 2 are the conversion coefficients of kinetic energy and potential energy, effectively reducing the system energy consumption.

[0017] Even further, the compensation coefficients k 1 , k 2 , k 3 in the flow rate compensation operation module, according to the time period T cDynamically adjust according to the historical flow rate fluctuations, and the adjustment is as follows: Among them, k i represents the temperature, pressure, and flow compensation coefficients after dynamic adjustment, i = 1, 2, 3, k i0 is the initial value of the compensation coefficient, b 1 , b 2 are the adjustment factors, Q j is the flow rate value collected at the j-th time, is the set flow rate value corresponding to the j-th time, t is the current time, is the sum of the squares of the deviations between the flow rate values collected in the previous N times and the corresponding set flow rate values, T c is the time period of the system operation. By adjustment, the compensation coefficient can adapt to the working condition changes during the long-term operation of the system. At the same time, the flow compensation algorithm is more adaptable and accurate, maintaining the stable flow control performance of the system.

[0018] Furthermore, in the power supply management circuit of the storage and power supply management module, the output voltage V out and the relationship formula with the load resistance R load , the internal resistance r of the power supply, and the electromotive force E of the power supply: When the load of each module in the system changes, that is, when the load resistance R load changes, the power supply management circuit automatically adjusts the output voltage V out according to this formula to ensure that each module obtains a stable working voltage and ensure that the opening and closing operations of the valve are not affected by voltage fluctuations.

[0019] Furthermore, the storage and power supply management module is responsible for the energy storage and power supply distribution of the entire valve opening and closing control system. It stores the electric energy recovered from the energy recovery conversion module through energy storage elements. At the same time, it uses the power supply management circuit to distribute electric energy according to the needs of each module of the system to ensure the stable operation of the system. By monitoring the energy consumption situation and the electric energy storage capacity of the system, it optimizes the operation strategy of the system to ensure that each part of the system can obtain appropriate electric energy supply under different working conditions, and at the same time improve the energy utilization rate. Its working process is as follows:

[0020] Electric energy reception and storage: The storage and power supply management module receives the electric energy E e converted from the energy recovery conversion module. These electric energies are stored in the energy storage elements. When the energy recovery conversion module converts the kinetic energy and potential energy when the valve is closed into electric energy and transmits it, the energy storage elements start to store the electric energy;

[0021] Power Supply Management: When the magnetic drive module of the system opens the valve and other modules are running, the power supply management circuit distributes electrical energy according to the power demands of each module. For the magnetic drive module, according to the power required for its startup and operation, the power supply management circuit extracts the corresponding electrical energy from the energy storage element and transmits it to the magnetic drive module. Using the formula where V out is the output voltage, E is the electromotive force of the power supply, R load is the load resistance, r is the internal resistance of the power supply, the power supply management circuit will automatically adjust the output voltage V load according to the change of the load resistance R out to ensure the stability of the voltage output to each module and guarantee the normal operation of each module;

[0022] System Status Monitoring and Optimization: This module continuously monitors the energy consumption of the system and its own electrical energy storage. By analyzing the energy consumption of the system, it judges whether the system is in a high-energy consumption state or a low-energy consumption state, and whether the current electrical energy storage is sufficient. When the system energy consumption is high, it controls the distribution of electrical energy to avoid the system being unable to operate normally due to excessive electrical energy consumption; when the electrical energy storage is low, it controls the electrical energy output;

[0023] Collaboration and Feedback: The storage and power supply management module works in collaboration with the flow compensation operation module. According to the electrical energy storage and energy consumption of the system, it provides information for the flow compensation operation module to assist it in optimizing the operation strategy of the system. When the stored electrical energy is less, the flow compensation operation module will adjust the flow compensation algorithm to make the valve operate in a more energy-saving state to extend the operation time of the system; when the electrical energy is sufficient, the system will provide more electrical energy for the magnetic drive module according to the calculation result of the flow compensation operation module to ensure the accurate control of the flow;

[0024] System Startup and Initialization: When the system starts up, it provides initial state power distribution for the parameter sensing module and the magnetic drive module as startup electrical energy. At the same time, considering the initial resistance R 0 and the initial inductance L 0 of the motor, it calculates the initial impedance of the motor where f is the power supply frequency, and according to the initial impedance Z 0 of the motor and the electromotive force E of the power supply, it calculates the initial current when the motor starts to ensure that the equipment can start safely and provide guarantee for the normal operation of the whole system.

[0025] Furthermore, the magnetic drive module consists of a magnetic coupler and a motor. Based on the interaction of magnetic forces, when the motor operates, a rotating magnetic field is generated. The active magnetic poles in the magnetic coupler start to rotate under the action of the rotating magnetic field of the motor. Due to the magnetic force between the active magnetic poles and the driven magnetic poles of the magnetic coupler, the rotation of the active magnetic poles will drive the driven magnetic poles to rotate synchronously. The driven magnetic poles are connected to the valve spool, so as to realize the transmission of the motor power to the valve spool in a non-contact manner, and then control the opening and closing of the valve. Its working process is as follows:

[0026] Receiving signal: When the entire valve opening and closing control system receives a start signal, the power supply circuit of the motor in the magnetic drive module is turned on, and the control circuit of the motor starts to initialize to prepare for the motor startup;

[0027] Motor startup: The motor control circuit gradually increases the input voltage and current of the motor to start the motor smoothly. As the motor speed gradually increases, the intensity of the rotating magnetic field generated by the motor also gradually increases;

[0028] Magnetic coupling drive: The active magnetic poles in the magnetic coupler are driven by electromagnetic force to rotate under the action of the rotating magnetic field of the motor. The active magnetic poles and the driven magnetic poles interact with each other through magnetic force. When the active magnetic poles rotate, the driven magnetic poles will rotate synchronously with the active magnetic poles, so as to transmit the rotational motion of the motor to the valve spool connected to the driven magnetic poles;

[0029] Valve opening and closing operation: As the driven magnetic poles rotate, the valve spool also starts to rotate, thus realizing the opening action of the valve. During this process, the operation data of the magnetic drive module are collected in real time and fed back to the flow compensation operation module to provide a basis for flow regulation;

[0030] System stop: When the entire valve opening and closing control system receives a stop signal, the control circuit of the motor will reduce the input voltage and current of the motor to decelerate the motor until it stops rotating. The active magnetic poles and the driven magnetic poles in the magnetic coupler also stop rotating, and the valve spool stops at the current position, completing the valve opening and closing control process.

[0031] Furthermore, the storage and power supply management module automatically switches between external power supply and internal energy storage power supply according to the external power supply and the operating state of the system. When the external power supply is normal and stable, the system preferentially uses the external power supply and simultaneously charges the energy storage components to store the excess electric energy;

[0032] When the external power supply is interrupted or unstable, the system can switch to the internal energy storage power supply mode to ensure the continuous operation of the system. During the switching process, the power supply management circuit will adjust the circuit parameters according to the voltage and current characteristics of different power supplies to ensure a smooth transition of voltage and current, avoiding voltage or current shocks to the system caused by power supply switching, and ensuring the normal operation of each module in the system and the stability of the system. At the same time, the system will optimize the charging strategy of the internal energy storage components according to the historical usage data of the external power supply to ensure that the stored electrical energy is sufficient to support the system operation when the external power supply is unavailable, so as to meet the emergency needs of the system.

[0033] Compared with the prior art, the valve opening and closing control system has the following beneficial effects:

[0034] First, the valve opening and closing control system of the present invention can automatically calculate and adjust the flow compensation value in real time according to the changes of parameters such as the temperature and pressure of the medium in the pipeline through the built-in intelligent flow compensation algorithm, and accurately adjust the valve opening to ensure a stable output of the set flow under different working conditions, improving the stability of the production process, reducing resource waste and product quality problems caused by flow fluctuations. At the same time, the energy recovery and conversion module can convert the kinetic energy and potential energy generated during the valve closing stage into electrical energy and store it, realizing the recycling of energy, not only reducing the energy consumption of the system, but also improving the energy utilization rate.

[0035] Second, the valve opening and closing control system of the present invention realizes the non-contact transmission of the valve by introducing a magnetic drive module, effectively avoiding the friction loss and leakage risk of traditional mechanical transmission, improving the transmission efficiency and operation stability of the system. At the same time, the magnetic drive module does not generate electric sparks during operation, is suitable for various environments, enhances the safety and reliability of the system. In addition, the operation data of the magnetic drive module can be real-time fed back to the flow compensation operation module, providing an accurate basis for flow regulation, further improving the control accuracy and stability of the system, and extending the service life of the valve.

[0036] Other advantages, objectives and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0038] Figure 1 It is an operation flowchart of a valve opening and closing control system;

[0039] Figure 2 It is a block diagram of the module composition of a valve opening and closing control system. Detailed implementation manner

[0040] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, elaborate in detail on the specific implementation manner, structure, features and their effects of the present invention as follows.

[0041] Embodiment 1

[0042] This embodiment elaborates in detail on the operation process of a valve opening and closing control system. The system integrates a magnetic drive module, a parameter sensing module, a flow compensation operation module, an energy recovery conversion module, and a storage and power supply management module. Through the collaborative work of each module, precise control of the valve, energy recovery and efficient utilization are achieved, effectively solving the deficiencies of the valve control system in terms of flow control, drive mode and energy utilization, and significantly improving the stability, safety and energy efficiency of the industrial production process.

[0043] The composition of the system includes: a magnetic drive module, a parameter sensing module, a flow compensation operation module, an energy recovery and conversion module, and a storage and power supply management module. In specific implementation, the magnetic drive module consists of a magnetic coupler and a motor. When the motor operates, the energized coil inside it is subjected to the Ampere force in the magnetic field and starts to rotate, thereby generating a rotating magnetic field. The active magnetic pole in the magnetic coupler is driven to rotate by the electromagnetic force under the induction of the motor's rotating magnetic field. Due to the magnetic attraction between the active magnetic pole and the driven magnetic pole, when the active magnetic pole rotates, the driven magnetic pole will rotate synchronously. Since the driven magnetic pole is connected to the valve spool, the rotational motion of the motor is transmitted to the valve spool in a non-contact manner, realizing the opening and closing operations of the valve. This module avoids the frictional losses caused by direct contact of components in traditional mechanical transmission, reduces the degree of wear, and improves the transmission efficiency. At the same time, the non-contact transmission method eliminates the leakage hazard and does not generate electric sparks during operation, making it particularly suitable for dangerous environments such as flammable and explosive. In addition, during the operation of the magnetic drive module, the operating data such as the motor speed and current are collected in real time and fed back to the flow compensation operation module to provide a basis for flow regulation. Moreover, when the entire valve opening and closing control system receives a start signal, the power supply circuit of the motor in the magnetic drive module is switched on, and the control circuit of the motor starts to initialize. The control circuit gradually increases the input voltage and current of the motor to start the motor smoothly. As the motor speed gradually increases, the intensity of the rotating magnetic field generated by the motor also gradually increases. The active magnetic pole in the magnetic coupler starts to rotate under the action of the rotating magnetic field, and then drives the driven magnetic pole to rotate synchronously, and the valve spool rotates accordingly, realizing the opening action of the valve. During the valve opening process, the operating data of the module are fed back to the flow compensation operation module in real time. When the system receives a stop signal, the control circuit of the motor reduces the input voltage and current of the motor to decelerate the motor until it stops rotating. The active magnetic pole and the driven magnetic pole in the magnetic coupler also stop rotating, and the valve spool stops at the current position, completing the valve opening and closing control process.

[0044] The parameter sensing module includes a temperature sensor, a pressure sensor, and a flow sensor. The temperature sensor measures the temperature T of the medium in the pipeline in real time according to the characteristic that it changes with temperature. The pressure sensor converts the pressure P of the medium in the pipeline into an electrical signal based on the piezoresistive effect. The flow sensor obtains the flow rate Q of the medium in the pipeline in real time through electromagnetic induction. These sensors transmit the collected temperature, pressure, and flow rate data to the flow compensation operation module in the form of electrical signals to provide raw data support for flow compensation calculation and monitor the state of the medium in the pipeline in real time, ensuring that the system can be adjusted according to the actual working conditions. In actual operation, the sensors continuously work, collect data, and transmit the data to the flow compensation operation module in a timely manner, enabling the system to quickly respond to changes in medium parameters.

[0045] The flow compensation operation module incorporates a flow compensation algorithm. Its function is to calculate the flow compensation value required due to parameter changes based on the temperature, pressure, and flow data transmitted by the parameter sensing module, as well as the operating data fed back by the magnetic drive module, so as to ensure a stable output of the set flow under different operating conditions. The flow compensation algorithm formula is: ΔQ = k 1 (T - T 0 ) + k 2 (P - P 0 ) + k 3 (Q - Q 0 ), where k 1 , k 2 , k 3 are the compensation coefficients for temperature, pressure, and flow respectively. They reflect the influence degrees of temperature, pressure, and flow changes on the flow compensation value. T 0 , P 0 , Q 0 are the initial set values of temperature, pressure, and flow respectively to ensure the smooth progress of the reaction. During actual operation, the flow compensation operation module receives the real-time temperature T, pressure P, and flow Q data collected by the parameter sensing module, and calculates the preliminary flow compensation value ΔQ according to the flow compensation algorithm formula. However, considering that the valve will affect the flow due to wear during long-term use, the wear correction coefficient k w and the wear degree W of the valve are introduced. The final flow compensation value is optimized to: ΔQ final = ΔQ(1 + k w W). In order to make the compensation coefficients better adapt to the operating condition changes during the long-term operation of the system, the compensation coefficients k 1 , k 2 , k 3 are dynamically adjusted according to the time period T c of the system operation and the historical flow fluctuation situation. The adjustment formula is: where k i represents the temperature, pressure, and flow compensation coefficients after dynamic adjustment. i = 1, 2, 3, k i0 is the initial value of the compensation coefficient, b 1 , b 2 are the adjustment factors, Q j is the flow value collected at the jth time, is the set flow value corresponding to the jth time, t is the current time, is the sum of the squares of the deviations between the flow values collected in the previous N times and the corresponding set flow values, T c is the time period of the system operation. Through this dynamic adjustment mechanism, the compensation coefficients can be adaptively adjusted according to the actual operation situation of the system, making the flow compensation algorithm more adaptable and accurate, maintaining the stable flow control performance of the system, and calculating the final flow compensation value ΔQ finalAfter that, the flow compensation operation module sends instructions to the magnetic drive module to precisely adjust the valve opening and set the flow rate Q. d The relationship with the current flow rate Q and the flow compensation value ΔQ final satisfies: Q d = Q + ΔQ final , for example, when the calculated flow compensation value is positive, it indicates that the current flow rate is less than the set flow rate, and the valve opening needs to be increased; conversely, when the flow compensation value is negative, the valve opening needs to be decreased.

[0046] During the valve closing stage of the energy recovery and conversion module, the moving parts of the valve have kinetic energy E k and potential energy E p . The function of the energy recovery and conversion module is to convert this part of the energy into electrical energy, realizing the recycling of energy, effectively reducing the system energy consumption. The kinetic energy where m is the mass of the moving parts of the valve, v is the speed of the moving parts when the valve closes, and the potential energy E p = mgh, where g is the acceleration due to gravity and h is the height change of the moving parts when the valve closes. The energy recovery and conversion module converts kinetic energy and potential energy into electrical energy E e through electromagnetic induction. The energy conversion formula is E e = c 1 E k + c 2 E p , where c 1 and c 2 are the conversion coefficients of kinetic energy and potential energy. The converted electrical energy E e is transmitted to the storage and power supply management module for storage. In actual operation, when the valve starts to close, the energy recovery and conversion module starts to work, calculates the kinetic energy and potential energy based on the mass, speed, and height change of the moving parts of the valve, converts the kinetic energy and potential energy into electrical energy, and transmits the electrical energy to the storage and power supply management module. This process realizes the recycling of energy and reduces energy waste.

[0047] The storage and power supply management module consists of energy storage elements and a power supply management circuit. The energy storage elements are used to store the electrical energy transmitted by the energy recovery and conversion module, and the power supply management circuit is responsible for managing the power supply of the entire system to ensure that each part of the system can stably obtain electrical energy when needed. When the system needs electrical energy, such as when the magnetic drive module opens the valve, the power supply management circuit extracts electrical energy from the energy storage elements according to the demand and stably outputs it to each module. The output voltage V out and the load resistance R load 、the internal resistance r of the power supply and the electromotive force E of the power supply satisfy the relationship formula: When the load of each module in the system changes, that is, the load resistance R loadWhen it changes, the power supply management circuit automatically adjusts the output voltage V according to this relational formula out , ensuring that each module obtains a stable operating voltage and ensuring that the opening and closing operations of the valve are not affected by voltage fluctuations. This module can also work in coordination with the flow compensation operation module to optimize the operation strategy of the system according to the energy consumption situation and the electric energy storage capacity of the system. For example, when the electric energy storage capacity is low, it notifies the flow compensation operation module to adjust the flow control strategy to reduce the system energy consumption and extend the service life of the energy storage components. At the same time, the storage and power supply management module automatically switches between external power supply and internal energy storage power supply according to the external power supply and the operating state of the system. When the external power supply is normal and stable, the system preferentially uses the external power supply and simultaneously charges the energy storage components to store the excess electric energy. When the external power supply is interrupted and unstable, the system can switch to the internal energy storage power supply mode to ensure the continuous operation of the system. During the switching process, the power supply management circuit will adjust the circuit parameters according to the voltage and current characteristics of different power supplies to ensure a smooth transition of voltage and current, avoiding voltage or current shocks to the system caused by power supply switching, and ensuring the normal operation of each module in the system and the stability of the system. In addition, when the system starts, it provides initial state power as startup power for the parameter sensing module and the magnetic drive module. At the same time, considering the initial resistance R 0 and the initial inductance L 0 of the motor, calculate the initial impedance of the motor where f is the power supply frequency, and according to the initial impedance Z 0 of the motor and the power supply electromotive force E, calculate the initial current when the motor starts to ensure that the equipment can start safely and provide guarantee for the normal operation of the entire system.

[0048] In summary, the valve opening and closing control system of the present invention realizes the non-contact transmission of the valve through the magnetic drive module, improves the transmission efficiency and operation stability, and is applicable to various dangerous environments. The parameter sensing module real-time collects the parameters of the medium in the pipeline to provide data support for flow compensation operation. The flow compensation operation module accurately calculates the flow compensation value according to the change of medium parameters and the valve wear condition through the built-in algorithm to ensure the stable output of the set flow. The energy recovery and conversion module recovers energy when the valve is closed to reduce the system energy consumption. The storage and power supply management module is responsible for the storage and distribution of electric energy, ensuring the stable operation of each module of the system, and coordinating with other modules to optimize the system operation strategy. This system has significantly improved in terms of flow control accuracy, driving method safety, and energy utilization efficiency, providing a strong guarantee for the stable and efficient operation of industrial production.

[0049] Embodiment 2

[0050] Such as Figure 1As shown in the figure, the specific steps for the valve opening and closing control system provided in this embodiment to control the opening and closing of the valve are as follows:

[0051] Receive the start signal: The storage and power supply management module allocates electrical energy as startup electrical energy for the initial states of the magnetic drive module and the parameter sensing module. The magnetic drive module receives the start signal, the motor power supply circuit is turned on, the control circuit is initialized, and the input voltage and current of the motor are gradually increased. The motor starts smoothly and drives the valve spool to move.

[0052] Data acquisition: The temperature, pressure, and flow sensors of the parameter sensing module start to collect the temperature, pressure, and flow data of the medium in the pipeline in real time and transmit them to the flow compensation operation module.

[0053] Flow compensation calculation and valve opening adjustment: The flow compensation operation module receives the data transmitted by the parameter sensing module and the operation data fed back by the magnetic drive module, and calculates the preliminary flow compensation value according to the basic flow compensation algorithm formula.

[0054] Dynamic adjustment of the compensation coefficient: During the operation of the system, the compensation coefficient in the flow compensation operation module will be dynamically adjusted according to the time period of system operation and the historical flow fluctuation situation, making the adaptability and accuracy of the flow compensation algorithm stronger, so as to maintain the stable flow control performance of the system.

[0055] Combine the wear correction compensation value: Combine the valve wear degree, wear correction coefficient, and the adjusted compensation coefficient to calculate the final flow compensation value. According to the relationship between the set flow, the current flow, and the flow compensation value, the flow compensation operation module will send an instruction to the magnetic drive module, and the magnetic drive module will adjust the motor operation accordingly to accurately adjust the valve opening and ensure a stable output of the set flow.

[0056] Energy recovery when the valve is closed: When the valve enters the closing stage, the energy recovery conversion module starts to work. The module converts the energy into electrical energy by using the kinetic energy and potential energy of the valve movement and transmits it to the storage and power supply management module.

[0057] Electric energy storage and power supply management: The storage and power supply management module receives and stores the electric energy transmitted by the energy recovery conversion module. When the system needs electricity, the power supply management circuit will automatically adjust the output voltage according to the change of the load resistance to supply stable power to each module.

[0058] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments of equivalent changes by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A valve opening and closing control system, characterized in that: The system consists of: magnetic drive module, parameter sensing module, flow compensation calculation module, energy recovery conversion module, storage and power supply management module; The magnetic drive module is composed of a magnetic coupler and a motor. The power generated by the motor is transmitted to the valve core in a contactless manner through the magnetic coupler to realize the opening and closing operation of the valve. The operation data is fed back to the flow compensation calculation module to provide a basis for flow regulation. The parameter sensing module includes a temperature sensor, a pressure sensor and a flow sensor, which collects the temperature T, pressure P and flow Q data of the medium in the pipeline in real time and accurately, and transmits these data to the flow compensation calculation module to provide raw data support for the flow compensation calculation; The flow compensation calculation module has a built-in flow compensation algorithm, which receives the temperature, pressure and flow data from the parameter sensing module and the operation data fed back by the magnetic drive module. According to the data, the flow compensation algorithm is used to automatically calculate the flow compensation value ΔQ required due to parameter changes, and send instructions to the magnetic drive module to accurately adjust the valve opening to ensure that the set flow can be stably output under different working conditions. The flow compensation algorithm is: ΔO=k1(T-T0)+k2(P-P0)+k3(Q-Q0), k1, k2, k3 are the compensation coefficients of temperature, pressure, and flow, respectively, T0, P0, Q0 are the initial set values ​​of temperature, pressure, and flow, respectively, and at the same time, the wear correction coefficient k is introduced. w , correct the influence of valve wear degree W on flow, and the final flow compensation value is optimized as: ΔQ final =ΔQ(1+k w W); The energy recovery conversion module converts the kinetic energy and potential energy generated when the valve is closed into electrical energy during the valve closing phase, and transmits the converted electrical energy to the storage and power supply management module; The storage and power supply management module is composed of an energy storage element and a power supply management circuit, which receives and stores the electric energy transmitted by the energy recovery conversion module and is responsible for managing the power supply of the entire system.

2. A valve opening and closing control system according to claim 1, characterized in that: The flow compensation calculation module sends instructions to the magnetic drive module to accurately adjust the valve opening to ensure that the set flow Q can be stably output under different working conditions. d To maintain the stability of the production process, the set flow rate Q d With the current flow Q and flow compensation value ΔQ final Relationship satisfaction: Q d =Q+ΔQ final .

3. A valve opening and closing control system according to claim 1, characterized in that: The energy recovery conversion module converts the kinetic energy E generated when the valve is closed during the valve closing phase. k and potential energy E p Converted into electrical energy E e The converted electric energy is transmitted to the storage and power supply management module to realize energy recovery and reuse, where the energy is converted into E e =c1E k +c2E p , c1 and c2 are the conversion coefficients of kinetic energy and potential energy.

4. A valve opening and closing control system according to claim 1, characterized in that: The compensation coefficients k1, k2, k3 in the flow compensation calculation module are calculated based on the system operation time period T c Dynamically adjust to the historical traffic fluctuations and adjust to: Among them, k i Indicates the temperature, pressure, and flow compensation coefficients after dynamic adjustment, i = 1, 2, 3, k i0 is the initial value of the compensation coefficient, b1 and b2 are adjustment factors, Q j is the flow value collected for the jth time, is the set flow value corresponding to the jth time, t is the current time, It is the sum of squares of the deviations between the flow values ​​collected in the previous N times and the corresponding set flow values. c It is the time period of system operation. Through adjustment, the compensation coefficient can adapt to the changes in operating conditions during the long-term operation of the system.

5. A valve opening and closing control system according to claim 1, characterized in that: In the power supply management circuit of the storage and power supply management module, the output voltage V out With load resistance R load , the power supply internal resistance r and the power supply electromotive force E: When the load of each module in the system changes, that is, the load resistance R load When the power supply management circuit automatically adjusts the output voltage V according to the formula out , ensuring that each module obtains a stable operating voltage and that the opening and closing operations of the valve are not affected by voltage fluctuations.

6. A valve opening and closing control system according to claim 5, characterized in that: The storage and power supply management module is responsible for the energy storage and power supply distribution of the entire valve opening and closing control system. It stores the electric energy recovered from the energy recovery conversion module through the energy storage element, and uses the power supply management circuit to distribute the electric energy according to the needs of each module of the system. It also optimizes the operation strategy of the system by monitoring the energy consumption and electric energy storage of the system. Its working process is as follows: Electric energy reception and storage: The storage and power supply management module receives the electric energy converted by the energy recovery conversion module, which is stored in the energy storage element. When the energy recovery conversion module converts the kinetic energy and potential energy when the valve is closed into electric energy and transmits it, the energy storage element starts to store the electric energy. Power supply management: When the magnetic drive module of the system opens the valve and other modules are running, the power supply management circuit distributes power according to the power requirements of each module. For the magnetic drive module, according to the power required for its startup and operation, the power supply management circuit extracts the corresponding power from the energy storage element and transmits it to the magnetic drive module; System status monitoring and optimization: This module continuously monitors the system's energy consumption and its own electrical energy storage; Collaboration and feedback: The storage and power supply management module works in collaboration with the flow compensation operation module to provide information to the flow compensation operation module based on the system's power storage and energy consumption, helping it to optimize the system's operating strategy; System startup and initialization: When the system starts, the initial state of the parameter sensing module and the magnetic drive module is allocated electric energy as the starting electric energy. At the same time, the initial resistance R0 and initial inductance L0 of the motor are taken into account to calculate the initial impedance of the motor. Where f is the power frequency, and according to the initial impedance Z0 of the motor and the power supply electromotive force E, the initial current when the motor starts is calculated To ensure that the equipment can start safely and provide guarantee for the normal operation of the entire system.

7. A valve opening and closing control system according to claim 1, characterized in that: The magnetic drive module is composed of a magnetic coupler and a motor. Based on the interaction of magnetic forces, when the motor is running, a rotating magnetic field is generated. The active magnetic pole in the magnetic coupler starts to rotate under the action of the rotating magnetic field of the motor. Since there is magnetic force between the active magnetic pole and the driven magnetic pole of the magnetic coupler, the rotation of the active magnetic pole will drive the driven magnetic pole to rotate synchronously, and the driven magnetic pole is connected to the valve core, so that the power of the motor is transmitted to the valve core in a contactless manner, thereby controlling the opening and closing of the valve. The working process is as follows: Receiving signal: When the entire valve opening and closing control system receives the start signal, the power supply circuit of the motor in the magnetic drive module is connected, and the control circuit of the motor begins to initialize, preparing for the motor to start; Motor start: The motor control circuit gradually increases the input voltage and current of the motor to start the motor smoothly; Magnetic coupling transmission: The active magnetic pole in the magnetic coupling starts to rotate under the action of the rotating magnetic field of the motor and is driven by the electromagnetic force. The active magnetic pole and the driven magnetic pole interact with each other through magnetic force. When the active magnetic pole rotates, the driven magnetic pole will rotate synchronously with the active magnetic pole, thereby transmitting the rotational motion of the motor to the valve core connected to the driven magnetic pole; Valve opening and closing operation: As the driven magnetic pole rotates, the valve core also starts to rotate, thereby realizing the opening action of the valve. In this process, the operation data of the magnetic drive module is collected in real time and fed back to the flow compensation calculation module to provide a basis for flow regulation; System stop: When the entire valve opening and closing control system receives a stop signal, the motor's control circuit will reduce the motor's input voltage and current, causing the motor to slow down until it stops rotating. The active magnetic pole and driven magnetic pole in the magnetic coupling also stop rotating, and the valve core stops at the current position, completing the valve opening and closing control process.

8. A valve opening and closing control system according to claim 1, characterized in that: The storage and power supply management module automatically switches between external power supply and internal energy storage power supply according to the operating status of the external power supply and the system. When the external power supply is normal and stable, the system gives priority to the external power supply and charges the energy storage element at the same time to store excess electrical energy; When the external power supply is interrupted or unstable, the system can switch to the internal energy storage power supply mode to ensure the continuous operation of the system. At the same time, the system will optimize the charging strategy of the internal energy storage elements based on the historical usage data of the external power supply to ensure that when the external power supply is unavailable, the stored energy is sufficient to support the system operation to meet the emergency needs of the system.

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