Dynamic flow adjusting system

Abstract

The utility model provides a dynamic flow adjusting system. The dynamic flow adjusting system comprises a first flow meter, a second flow meter and a controller, wherein the first flow meter is used for collecting first flow data from controlled equipment; the processor is electrically connected with the flow meter and used for generating a first control instruction according to the first flow data; the second flow meter is used for collecting flow data of an inlet of controlled equipment and electrically connected with the processor, and the third flow meter is used for collecting flow data of an outlet of the controlled equipment and electrically connected with the processor; and the adjusting valve is electrically connected with the processor and used for adjusting the input flow of the controlled equipment according to the inlet flow data, the outlet flow data and the target flow value. According to the system, by collecting the first flow data and the flow data of the inlet and the outlet of the controlled equipment, the adjusting valve can quickly respond to the flow change and make adjustment based on the real-time flow data and the target flow value, so that the problem that the accuracy of flow adjustment is low due to the fact that the valve is manually controlled is solved.

Description

Technical Field

[0001] This application relates to the technical field of flow control, and particularly to a flow dynamic regulation system. Background Art

[0002] A flow regulation system controls the flow rate of a fluid, such as a gas or a liquid, in a pipeline to ensure the safety and efficiency of a production process. The flow regulation system consists of a sensor, a controller, and an actuator to achieve precise control of the flow rate.

[0003] In a flow regulation system, a manual control valve is used to regulate the flow rate. The manual control valve is manually adjusted by an operator to change the opening degree to alter the flow rate of the fluid. This valve is used in conjunction with a pressure gauge or other measuring instruments so that the operator can determine whether to adjust the valve opening according to the real-time pressure reading. For example, in a chemical production process, the operator adjusts the valve opening according to the required reaction rate to achieve the desired flow rate level.

[0004] However, in practical applications, due to changes in process conditions, such as temperature fluctuations, pressure changes, or minor differences in material composition, the flow rate needs to be adjusted in a timely manner to maintain the stability of the process. However, the manual control valve relies on manual intervention by the operator, which increases the possibility of human error and cannot respond quickly to these changes. Therefore, in the face of a complex industrial environment, the manual control valve results in a low accuracy rate of flow regulation. Summary of the Utility Model

[0005] This application provides a flow dynamic regulation system to solve the problem of low accuracy rate of flow regulation caused by a manual control valve.

[0006] This application provides a flow dynamic regulation system, including:

[0007] A first flowmeter for collecting first flow data from a controlled device;

[0008] A processor electrically connected to the flowmeter, configured to generate a first control instruction according to the first flow data, where the first control instruction is used to control a regulating valve to adjust the input flow rate of the controlled device according to a target flow value and the first flow data;

[0009] A second flowmeter electrically connected to the processor for collecting the inlet flow data of the controlled device, and a third flowmeter electrically connected to the processor for collecting the outlet flow data of the controlled device;

[0010] A regulating valve electrically connected to the processor, configured to adjust the input flow rate of the controlled device according to the inlet flow data, the outlet flow data, and the target flow value.

[0011] In some feasible embodiments, the system further includes: a first sensor electrically connected to the processor for calibrating the first flowmeter;

[0012] The first sensor is disposed between the controlled device and the first flowmeter and is configured to collect temperature data and / or pressure data;

[0013] The first flowmeter is further configured to generate second flow data based on the temperature data and / or pressure data;

[0014] The processor is further configured to generate a second control instruction according to the calculated second flow data, and the second control instruction is used to control the regulating valve to adjust the input flow of the controlled device according to the second flow data.

[0015] In some feasible embodiments, the system further includes: a monitoring component electrically connected to the processor for monitoring the regulating valve, and the monitoring component includes a displacement sensor and a pressure transmitter;

[0016] The displacement sensor is configured to collect position data of the valve of the regulating valve;

[0017] The pressure transmitter is configured to collect pressure data of the valve of the regulating valve;

[0018] If the first flow value in the first flow data is not equal to the target flow value, the processor is further configured to adjust the regulating valve according to the position data and the pressure data.

[0019] In some feasible embodiments, the system further includes: a pretreatment device disposed between the controlled device and the first flowmeter;

[0020] The pretreatment device includes a filter for removing impurities of the measured object.

[0021] In some feasible embodiments, the system further includes: an input pipeline for inputting the measured object;

[0022] The regulating valve includes: a valve body, a valve seat, a valve core, a valve, and an actuator. The valve core is disposed in the valve body, the actuator is configured to drive the valve core according to a signal or power, and the valve is disposed on the input pipeline.

[0023] In some feasible embodiments, the actuator is an electric actuator or a pneumatic actuator, and the regulating valve further includes a motor, and the electric actuator or the pneumatic actuator drives the state of the valve through the motor.

[0024] In some feasible embodiments, a throttle orifice for controlling the flow area and electrically connected to the actuator is provided on the input pipeline to adjust the input flow rate in the input pipeline.

[0025] As can be seen from the above technical solutions, the present application provides a flow rate dynamic adjustment system, including: a first flow meter for collecting first flow rate data from a controlled device; a processor electrically connected to the flow meter for generating a first control instruction according to the first flow rate data, the first control instruction being used to control a control valve to adjust the input flow rate of the controlled device according to a target flow rate value and the first flow rate data; a second flow meter electrically connected to the processor for collecting the inlet flow rate data of the controlled device, and a third flow meter electrically connected to the processor for collecting the outlet flow rate data of the controlled device; a control valve electrically connected to the processor for adjusting the input flow rate of the controlled device according to the inlet flow rate data, the outlet flow rate data, and the target flow rate value. The system collects the first flow rate data in the controlled device through the first flow meter, the second flow meter and the third flow meter respectively collect the flow rate data at the inlet and outlet of the controlled device, and the control valve can quickly respond to the change of the flow rate and make adjustments based on the real-time flow rate data and the target flow rate value, so as to solve the problem of low accuracy of flow rate adjustment caused by manual control valves. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions of the present application, the drawings required for the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of the flow rate dynamic adjustment system provided by the embodiment of the present application. Detailed Embodiments

[0028] The embodiments will be described in detail below, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following examples do not represent all embodiments consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application detailed in the claims.

[0029] To solve the problem of low accuracy of flow rate adjustment caused by manual control valves, as Figure 1As shown in the figure, an embodiment of the present application provides a flow dynamic regulation system, which includes a first flowmeter for collecting first flow data from a controlled device. For different controlled devices, the first flowmeter is different. If it is necessary to collect the first flow data of the controlled device as the flow data of a solid particle medium, in some embodiments, the first flowmeter is a screw conveyor or a vibrating feeder. The screw conveyor is suitable for the conveying of solid particles, and the volume flow rate of solid particles is estimated by measuring the rotation speed of the screw conveyor. The vibrating feeder is suitable for controlling and metering the conveying of solid particles, and the flow rate is estimated by measuring the vibration frequency and amplitude.

[0030] If it is necessary to collect the first flow data of the controlled device as the flow data of a fluid medium, in some embodiments, the first flowmeter is a turbine flowmeter, an electromagnetic flowmeter or an ultrasonic flowmeter. Among them, the turbine flowmeter is suitable for clean fluids, and the rotation speed of the turbine is proportional to the flow velocity, and the flow rate is calculated by measuring the rotation speed of the turbine. The electromagnetic flowmeter is suitable for conductive fluids and works based on Faraday's electromagnetic induction principle to measure the volume flow rate of conductive liquids. The ultrasonic flowmeter is suitable for almost all fluids, including gases, vapors and liquids. The flow velocity is determined by measuring the time difference of the sound wave propagation in the flowing medium.

[0031] If it is necessary to collect the first flow data of the controlled device as the flow data of a gas medium, in some embodiments, the first flowmeter is a thermal mass flowmeter, a vortex street flowmeter or an ultrasonic flowmeter. Among them, the thermal mass flowmeter calculates the mass flow rate of the gas by measuring the change in the cooling rate of the heating element. The vortex street flowmeter is suitable for gases and liquids, and measures the flow rate by detecting the vortex frequency generated when the fluid passes through the vortex street generator. The ultrasonic flowmeter is suitable for gases, and determines the flow velocity by measuring the time difference of the sound wave propagation in the gas.

[0032] The first flow data collected by the first flowmeter represents the actual flow rate currently passing through the controlled device.

[0033] It further includes a processor electrically connected to the flowmeter. The processor is the core control unit of the system and is responsible for generating control instructions according to the content data provided by the detector. The types of processors include but are not limited to microcontrollers (MCUs), programmable logic controllers (PLCs), industrial computers, etc.

[0034] Among them, the MCU has strong data processing and control capabilities. The PLC has high reliability and stability and is suitable for complex control logics and a large number of input / output processes. The industrial computer has powerful computing capabilities and rich software resources and is suitable for scenarios that require complex algorithms and data processing capabilities.

[0035] In this embodiment, the processor can also be a microprogram controller, which is convenient to design and has a simple structure. The microprogram controller includes an instruction sequence. For example, the instruction sequence can include multiple microinstructions, including controlling the regulating valve to adjust the input flow of the controlled device according to the target flow value and the first flow data. According to different requirements, the processor can adopt different microinstructions. It can be understood that microinstructions can also be added according to requirements by expanding the microinstructions in the microprogram controller. Of course, the control requirements can also be modified by modifying the microinstructions.

[0036] The processor is used to generate a first control instruction according to the first flow data, and the first control instruction is used to control the regulating valve to adjust the input flow of the controlled device according to the target flow value and the first flow data. Among them, the first control instruction contains information on how to adjust the regulating valve to match the target flow value. The processor can also adjust the control strategy according to the flow data at the inlet and outlet to ensure the accuracy of the input flow.

[0037] To collect the flow data at the inlet and outlet, the system further includes a second flowmeter electrically connected to the processor for collecting the inlet flow data of the controlled device, and a third flowmeter electrically connected to the processor for collecting the outlet flow data of the controlled device; that is, the second flowmeter collects the inlet flow of the controlled device, and the third flowmeter collects the outlet flow of the controlled device.

[0038] Similar to the first flowmeter, the second flowmeter and the third flowmeter are related to the type of medium of the controlled device. It can be understood that the second flowmeter, the third flowmeter and the first flowmeter are of the same type. For example, if the first flowmeter is one of a turbine flowmeter, an electromagnetic flowmeter or an ultrasonic flowmeter, then the second flowmeter and the third flowmeter are also one of a turbine flowmeter, an electromagnetic flowmeter or an ultrasonic flowmeter, and are used to collect the flow data of the fluid medium.

[0039] After obtaining the first flow data, the second flow data and the third flow data, the input flow of the controlled device can be adjusted by the regulating valve. The system further includes a regulating valve electrically connected to the processor for adjusting the input flow of the controlled device according to the inlet flow data, the outlet flow data and the target flow value.

[0040] Exemplarily, the processor receives real-time data from the inlet flowmeter and the outlet flowmeter, as well as the set target flow value. The processor calculates the current flow deviation (i.e., the difference between the actual flow and the target flow) based on these data. Based on this deviation, the processor decides whether to adjust the position of the regulating valve. If adjustment is needed, the processor sends a signal to the regulating valve, instructing the regulating valve to change its opening degree to increase or decrease the flow into the controlled device.

[0041] It is understandable that this process is a closed-loop control, that is, the processor continuously monitors the flow data and adjusts the position of the regulating valve as needed until the actual flow rate approaches or equals the target flow rate value.

[0042] Moreover, since the second flowmeter and the third flowmeter are arranged at the inlet or outlet of the controlled device, they can also convert the collected outlet flow data and inlet flow data into electrical signals and transmit them to the processor. A comparator is provided inside the processor to compare the outlet flow and the inlet flow and calculate the deviation value.

[0043] The processor calculates the amount that needs to be adjusted and generates a corresponding control signal, which is sent to the regulating valve to change its opening degree, thereby adjusting the input or output flow rate of the controlled device. If the outlet flow rate is greater than the inlet flow rate, and the goal is to keep the inlet flow rate equal to or close to the outlet flow rate, the processor controls the reduction of the opening degree of the regulating valve to limit the flow rate through the system, thereby attempting to reduce the outlet flow rate to make it close to the inlet flow rate. If the outlet flow rate is less than or equal to the inlet flow rate, the controller increases the opening degree of the regulating valve.

[0044] To allow the object to be measured to pass through, an input pipeline for inputting the object to be measured is further included. The input pipeline introduces the object to be measured (such as liquid, solid, etc.) into the controlled device. The regulating valve is arranged on the input pipeline and is used to adjust the flow rate of the input pipeline according to the control signal. The regulating valve is composed of multiple components, including a valve body, a valve seat, a valve core, a valve, and an actuator.

[0045] Among them, the valve body provides a space to allow solid particles to pass through. The valve seat cooperates with the valve core to control the passing rate of the particles by adjusting the gap between the valve seat and the valve core. The valve core moves to change the size of the gap with the valve seat, thereby controlling the flow rate of the solid particles. The movement of the valve core is driven by the actuator. The valve, that is, the connection part between the regulating valve and the input pipeline, serves as the inlet for the particles to enter the regulating valve to ensure that the particles can enter the valve body.

[0046] The actuator drives the movement of the valve core according to the control signal, such as an electric signal, a pneumatic signal, or a mechanical signal. The actuator can be an electric actuator, a pneumatic actuator, or a mechanical transmission device. For an electric actuator, the motor provides power, and the rotational motion of the motor is converted into a linear or rotational motion of the valve core through a mechanical transmission device. For a pneumatic actuator, a gas source (such as compressed air) provides power, and the valve core is driven to move through a pneumatic device (such as a cylinder, a piston, etc.). The actuator precisely controls the position of the valve core according to the control signal, thereby realizing the precise adjustment of the flow rate of the solid particles.

[0047] In some embodiments, a throttle port for controlling the flow area and electrically connected to the actuator is arranged on the input pipeline to adjust the input flow rate inside the input pipeline.

[0048] In a system where the object under test is a solid particle medium, the throttle is an adjustable grid, sieve or orifice plate provided in the input pipeline to control the passing rate of the particles, thereby indirectly adjusting the flow rate. For a fluid as the object under test, the input flow rate can be controlled by a valve.

[0049] In some embodiments, the system further includes: a first sensor electrically connected to a processor for calibrating the first flowmeter; the first sensor is disposed between the controlled device and the first flowmeter and is used to collect temperature data and / or pressure data; the first flowmeter is further used to generate second flow data based on the temperature data and / or pressure data; the processor is further used to generate a second control instruction according to the calculated second flow data, and the second control instruction is used to control the regulating valve to adjust the input flow rate of the controlled device according to the second flow data.

[0050] Since changes in temperature and pressure will affect the accuracy of flow measurement, therefore, the first sensor can be a temperature sensor or a pressure sensor. The first sensor collects the temperature data and / or pressure data of the medium and transmits these data to the processor. Based on the temperature data and / or pressure data received from the first sensor, the processor corrects the preliminary flow data through a built-in algorithm to generate more accurate second flow data, so as to improve the accuracy of flow measurement. The processor can internally contain a control algorithm (such as a PID control algorithm) for calculating the opening adjustment amount of the regulating valve according to the deviation between the second flow data and the set value. The regulating valve converts the control instruction of the processor into the actual action of the valve through an actuator.

[0051] In some embodiments, the system further includes: a monitoring component electrically connected to the processor for monitoring the regulating valve, and the monitoring component includes a displacement sensor and a pressure transmitter; the displacement sensor is used to collect the position data of the valve of the regulating valve; the pressure transmitter is used to collect the pressure data of the valve of the regulating valve; if the first flow value in the first flow data is not equal to the target flow value, the processor is further used to adjust the regulating valve according to the position data and the pressure data.

[0052] The displacement sensor is disposed on the regulating valve and is used to measure the current position of the valve, for example, the opening percentage. The pressure transmitter is also disposed on the regulating valve and is used to measure the pressure data on both sides of the valve or at a specific point. In addition to generating a control instruction according to the second flow data mentioned above, the processor is further used to receive the displacement data and pressure data from the monitoring component. If the first flow value in the first flow data is not equal to the target flow value, the processor will use these additional data to more precisely adjust the regulating valve, where the first flow data can be the original data directly from the first flowmeter or the corrected second flow data.

[0053] The processor can adopt control algorithms, such as fuzzy control, neural network control, etc., and combine displacement data, pressure data, and flow rate data to dynamically adjust the opening degree of the regulating valve to achieve faster and more accurate flow rate control.

[0054] In some embodiments, the system further includes: a pretreatment device disposed between the controlled device and the first flow meter, and the pretreatment device includes a filter for removing impurities of the measured substance.

[0055] The filter is used to achieve the function of removing impurities, removing impurities, particulate matter, or other substances that may affect the measurement accuracy of the flow meter. The type of filter can be selected according to the characteristics of the measured medium and system requirements, including but not limited to mesh filters, cartridge filters, magnetic filters, etc. Different types of filters are suitable for different media and impurity types. The filter blocks and captures impurities in the medium through its internal filter medium, such as filter screens, filter cartridges, etc., to ensure that only relatively pure medium enters the flow meter for measurement. This helps to reduce measurement errors and failures of the flow meter caused by impurity blockage or wear.

[0056] Before the medium generated by the controlled device flows to the first flow meter, it first passes through the filter in the pretreatment device to remove impurities, so as to ensure that the medium entering the flow meter is relatively pure and reduce the influence of impurities on the measurement accuracy of the flow meter. The pretreated medium then enters the first flow meter for measurement. At this time, since the impurities in the medium have been effectively removed, the measurement accuracy and stability of the flow meter are improved.

[0057] This application provides a flow rate dynamic adjustment system, including: a first flow meter for collecting first flow rate data from a controlled device; a processor electrically connected to the flow meter for generating a first control instruction according to the first flow rate data, and the first control instruction is used to control a regulating valve to adjust the input flow rate of the controlled device according to a target flow rate value and the first flow rate data; a second flow meter electrically connected to the processor for collecting the inlet flow rate data of the controlled device, and a third flow meter electrically connected to the processor for collecting the outlet flow rate data of the controlled device; a regulating valve electrically connected to the processor for adjusting the input flow rate of the controlled device according to the inlet flow rate data, the outlet flow rate data, and the target flow rate value. The system collects the first flow rate data in the controlled device through the first flow meter, and the second flow meter and the third flow meter respectively collect the flow rate data at the inlet and outlet of the controlled device. Based on the real-time flow rate data and the target flow rate value, the regulating valve can quickly respond to the change of the flow rate and make adjustments to solve the problem of low accuracy rate of flow rate adjustment caused by manual control valves.

[0058] It is understandable that the specific control methods of components such as the processor and flowmeter of the present application do not fall within the protection scope of the present application and can be implemented according to the prior art.

[0059] For the similar parts between the embodiments provided in the present application, reference can be made to each other. The specific implementation manners provided above are only several examples under the general concept of the present application and do not constitute a limitation on the protection scope of the present application. For those skilled in the art, any other implementation manner extended based on the solution of the present application without creative efforts belongs to the protection scope of the present application.

Claims

1. A flow dynamic regulation system, characterized in that: include: A first flow meter for collecting first flow data from a controlled device; a processor electrically connected to the flow meter, used to generate a first control instruction according to the first flow data, wherein the first control instruction is used to control the regulating valve to adjust the input flow of the controlled device according to the target flow value and the first flow data; a second flow meter electrically connected to the processor for collecting inlet flow data of the controlled device, and a third flow meter electrically connected to the processor for collecting outlet flow data of the controlled device; The regulating valve electrically connected to the processor is used to adjust the input flow of the controlled device according to the inlet flow data, the outlet flow data and the target flow value.

2. The flow dynamic regulation system according to claim 1, characterized in that: Also includes: a first sensor electrically connected to the processor for calibrating the first flow meter; The first sensor is disposed between the controlled device and the first flow meter, and is used to collect temperature data and / or pressure data; The first flow meter is further used to generate second flow data based on the temperature data and / or pressure data; The processor is further configured to generate a second control instruction according to the calculated second flow data, wherein the second control instruction is configured to control the regulating valve to regulate the input flow of the controlled device according to the second flow data.

3. The flow dynamic regulation system according to claim 1, characterized in that: Also included: a monitoring component for monitoring the regulating valve, electrically connected to the processor, the monitoring component including a displacement sensor and a pressure transmitter; The displacement sensor is used to collect the position data of the valve of the regulating valve; The pressure transmitter is used to collect the pressure data of the valve of the regulating valve; If the first flow value in the first flow data is not equal to the target flow value, the processor is further configured to adjust the regulating valve according to the position data and the pressure data.

4. The flow dynamic regulation system according to claim 1, characterized in that: Also includes: A pre-processing device disposed between the controlled device and the first flow meter; The pre-processing device comprises a filter for removing impurities from the object to be measured.

5. The flow dynamic regulation system according to claim 1, characterized in that: Also includes: An input pipe for inputting the object to be measured; The regulating valve comprises: a valve body, a valve seat, a valve core, a valve and an actuator, wherein the valve core is arranged in the valve body, the actuator is used to drive the valve core according to a signal or power, and the valve is arranged on the input pipeline.

6. The flow dynamic regulation system according to claim 5, characterized in that: The actuator is an electric actuator or a pneumatic actuator, and the regulating valve also includes a motor. The electric actuator or the pneumatic actuator drives the state of the valve through the motor.

7. The flow dynamic regulation system according to claim 5, characterized in that: The input pipeline is provided with a throttle port for controlling the flow area and electrically connected to the actuator, so as to adjust the input flow in the input pipeline.

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