WO2023024510A1 - Procédé et appareil de commande du degré d'ouverture de soupape, et support de stockage non volatil ainsi que processeur - Google Patents

Procédé et appareil de commande du degré d'ouverture de soupape, et support de stockage non volatil ainsi que processeur Download PDF

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Publication number
WO2023024510A1
WO2023024510A1 PCT/CN2022/084248 CN2022084248W WO2023024510A1 WO 2023024510 A1 WO2023024510 A1 WO 2023024510A1 CN 2022084248 W CN2022084248 W CN 2022084248W WO 2023024510 A1 WO2023024510 A1 WO 2023024510A1
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Prior art keywords
value
target
valve
opening
flow
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PCT/CN2022/084248
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English (en)
Chinese (zh)
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徐东雨
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维谛技术有限公司
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Publication of WO2023024510A1 publication Critical patent/WO2023024510A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations

Definitions

  • the present application relates to the technical field of valve control, in particular, to a control method, device, non-volatile storage medium and processor for valve opening.
  • a constant flow valve ie a constant flow regulating valve
  • the constant flow valve is a valve that combines a self-operated pressure difference control device and a flow adjustment device. Its working principle is: use a pressure difference control device to control and stabilize the pressure difference before and after the flow adjustment device, so that the pressure before and after the valve After the difference is greater than the constant flow starting value, the flow through the valve will no longer change with the pressure difference before and after the valve, that is, within the range of pressure difference control, the flow through a certain opening of the valve can be kept constant automatically, and the flow rate The change can be realized only by adjusting the opening of the valve, which has nothing to do with the pressure difference between the front and back of the valve.
  • the constant flow valve of the related art has the following disadvantages. It cannot automatically adjust the opening of the valve according to the flow requirement, and cannot output real-time flow, and has no intelligent interface.
  • the present application provides a valve opening control method, device, non-volatile storage medium and processor to solve the problem in the related art that it is difficult to adjust the valve opening according to flow requirements.
  • a method for controlling the opening of a valve includes: determining the corresponding target opening value of the valve under the current pressure difference based on the target flow value; adjusting the current opening value of the valve to the target opening value, and calculating the actual flow value of the fluid flowing through the valve; When the flow value is not equal to the target flow value, adjust the current opening value of the valve so that the difference between the actual flow value and the target flow value falls within the range of the preset flow value.
  • determining the corresponding target opening value of the valve under the current pressure difference based on the target flow value includes: calculating the target parameter value of the fluid according to the target flow value and the pressure difference, wherein the target parameter value and the valve opening value have a mapping Relationship, the type of the target parameter value is one of the following: resistance number, flow coefficient; determine the target opening value according to the target parameter value and the mapping relationship.
  • calculating the target parameter value of the fluid according to the target flow value and the pressure difference includes: calculating the resistance value of the fluid according to the target flow value and the pressure difference when the temperature change value of the fluid belongs to a preset temperature value range, and The resistance value is determined as the target parameter value; or the flow coefficient value of the fluid is calculated according to the target flow value, pressure difference and preset density, and the flow coefficient value is determined as the target parameter value; when the temperature change value of the fluid does not belong to the preset temperature value In the case of the range, the current density of the fluid is determined according to the current temperature of the fluid, the flow coefficient value of the fluid is calculated according to the target flow value, pressure difference and current density, and the flow coefficient value is determined as the target parameter value.
  • the method before determining the target opening value according to the target parameter value and the mapping relationship, the method further includes: judging whether the target parameter value belongs to a preset range; when the target parameter value is greater than the maximum value corresponding to the preset range, or less than the minimum value corresponding to the preset range, an alarm message is issued; when the target parameter value belongs to the preset range, the step of determining the target opening value according to the target parameter value and the mapping relationship is performed.
  • determining the target opening value according to the target parameter value and the mapping relationship includes: in the case that the mapping relationship is represented by a mapping table, matching the parameter value in the mapping table according to the target parameter value, and obtaining the matched parameter value corresponding to According to the valve opening corresponding to the matched parameter value, the target opening value is determined, wherein the mapping table contains the corresponding relationship between the parameter value and the valve opening; in the case where the mapping relationship is represented by a preset relationship Next, the valve opening corresponding to the target parameter value is determined based on the preset relational expression, and the valve opening corresponding to the target parameter value is determined as the target opening value. The corresponding relationship is determined.
  • the method before determining the corresponding target opening value of the valve under the current pressure difference based on the target flow value, the method further includes: obtaining the current pressure difference of the valve, and judging whether the current pressure difference is greater than zero; when the current pressure difference is less than If it is equal to zero, determine that the current opening value of the valve is the maximum valve opening value, and issue an alarm message; when the current pressure difference is greater than zero, perform a determination based on the target flow value to determine the corresponding target opening value of the valve under the current pressure difference. degree value step.
  • adjusting the current opening value of the valve to the target opening value, and calculating the actual flow value of the fluid passing through the valve includes: adjusting the current opening value of the valve to the target opening value, and obtaining the updated Current pressure difference; when the temperature change value of the fluid belongs to the preset temperature value range, calculate the actual flow value according to the target opening value and the updated current pressure difference, or calculate the actual flow value according to the target opening value and the updated current pressure difference and the preset density to calculate the actual flow value; when the temperature change value of the fluid does not belong to the range of the preset temperature value, the current density of the fluid is determined according to the current temperature of the fluid, and according to the target opening value and the updated current pressure difference And the current density calculates the actual flow value.
  • adjusting the current opening value of the valve so that the difference between the actual flow value and the target flow value belongs to the preset flow value range includes: When the value is greater than the target flow value, reduce the target opening value so that the difference between the actual flow value and the target flow value belongs to the preset flow value range; when the actual flow value is smaller than the target flow value, increase The target opening value is large, so that the difference between the actual flow value and the target flow value belongs to the preset flow value range.
  • the valve includes a valve body and a controller
  • the controller includes a communication interface and/or a human-computer interaction module
  • the communication interface is used to receive a target flow value or send a target signal value
  • the human-computer interaction module is used to set the target flow value, and display the target flow value and/or display the target signal value
  • the target signal value includes at least one of the following: current pressure difference, target opening value and actual flow value.
  • a valve opening control device includes: a first determining unit, configured to determine the corresponding target opening value of the valve under the current pressure difference based on the target flow value; a calculating unit, configured to adjust the current opening value of the valve to the target opening value, and calculate The actual flow value of the fluid flowing through the valve; the adjustment unit is used to adjust the current opening value of the valve when the actual flow value is not equal to the target flow value, so that the difference between the actual flow value and the target flow value Belongs to the preset flow value range.
  • the first determination unit includes: a first calculation module, configured to calculate the target parameter value of the fluid according to the target flow value and the pressure difference, wherein the target parameter value and the valve opening value have a mapping relationship, and the target parameter value
  • the type is one of the following: resistance number, flow coefficient; a determination module is used to determine the target opening value according to the target parameter value and the mapping relationship.
  • the first calculation module includes: a first calculation submodule, used to calculate the resistance value of the fluid according to the target flow value and the pressure difference when the temperature change value of the fluid belongs to the preset temperature value range, and calculate the resistance value The value is determined as the target parameter value; or the flow coefficient value of the fluid is calculated according to the target flow value, pressure difference and preset density, and the flow coefficient value is determined as the target parameter value; the second calculation sub-module is used to change the temperature of the fluid If the value does not belong to the preset temperature value range, determine the current density of the fluid according to the current temperature of the fluid, calculate the flow coefficient value of the fluid according to the target flow value, pressure difference and current density, and determine the flow coefficient value as the target parameter value .
  • a first calculation submodule used to calculate the resistance value of the fluid according to the target flow value and the pressure difference when the temperature change value of the fluid belongs to the preset temperature value range, and calculate the resistance value The value is determined as the target parameter value; or the flow coefficient value of the fluid is calculated according to
  • the determining module includes: a first determining submodule, configured to match the parameter values in the mapping table according to the target parameter values when the mapping relationship is represented by a mapping table, and obtain the valve corresponding to the matched parameter value Opening, determine the target opening value according to the valve opening corresponding to the matched parameter value, wherein the mapping table contains the corresponding relationship between the parameter value and the valve opening;
  • the valve opening corresponding to the target parameter value is determined based on the preset relational expression, and the valve opening corresponding to the target parameter value is determined as the target opening value. The corresponding relationship between the parameter value and the valve opening is determined.
  • the calculation unit includes: a first adjustment module, used to adjust the current opening value of the valve to a target opening value, and obtain an updated current pressure difference;
  • a first adjustment module used to adjust the current opening value of the valve to a target opening value, and obtain an updated current pressure difference;
  • the actual flow value is calculated according to the target opening value and the updated current pressure difference, or the actual flow value is calculated according to the target opening value, the updated current pressure difference and the preset density
  • the third calculation module is used to determine the current density of the fluid according to the current temperature of the fluid when the temperature change value of the fluid does not belong to the preset temperature value range, and determine the current density of the fluid according to the target opening value, the updated current pressure difference and the current Density calculates the actual flow value.
  • a non-volatile storage medium is also provided, and the non-volatile storage medium includes a stored program, wherein, when the program runs, the device where the non-volatile storage medium is located is controlled to execute a A method of controlling the valve opening.
  • an electronic device including a processor and a memory; computer-readable instructions are stored in the memory, and the processor is used to run the computer-readable instructions, wherein, when the computer-readable instructions run A control method for valve opening is implemented.
  • the following steps are adopted: determine the corresponding target opening value of the valve under the current pressure difference based on the target flow value; adjust the current opening value of the valve to the target opening value, and calculate the actual flow rate of the fluid flowing through the valve value; when the actual flow value is not equal to the target flow value, adjust the current opening value of the valve so that the difference between the actual flow value and the target flow value belongs to the preset flow value range, which solves the difficulty in related technologies
  • the problem of adjusting the opening of the valve according to the flow requirement The current opening value of the valve is adjusted through the target flow value, so that the actual flow value approaches the target flow value, and then the effect of flexibly adjusting the valve opening according to the flow requirement is achieved.
  • Fig. 1 is a flow chart of a method for controlling the opening of a valve according to an embodiment of the present application
  • Fig. 2 is a schematic diagram of an optional valve provided according to an embodiment of the present application.
  • Fig. 3 is a schematic diagram of an optional valve provided according to an embodiment of the present application.
  • Fig. 4 is a flow chart of an optional valve opening control method provided according to an embodiment of the present application.
  • Fig. 5 is a flow chart of an optional valve opening control method provided according to an embodiment of the present application.
  • Fig. 6 is a schematic diagram of a valve opening control device provided according to an embodiment of the present application.
  • a method for controlling the opening of a valve is provided.
  • Fig. 1 is a flowchart of a method for controlling a valve opening according to an embodiment of the present application. As shown in Fig. 1, the method includes step S102, step S104 and step S106.
  • step S102 the target opening value corresponding to the valve under the current pressure difference is determined based on the target flow value.
  • the target flow value is set in advance and can meet the flow demand at the back end of the valve
  • the current pressure difference is the difference between the inlet pressure value and the outlet pressure value of the current valve
  • the difference of the valve under the same flow rate Corresponding to different opening values under the pressure difference, determine the target opening value corresponding to the target flow value under the current pressure difference, thus laying the foundation for flow adjustment.
  • the corresponding pressure of the valve under the current pressure difference is determined based on the target flow value.
  • the method also includes: obtaining the current pressure difference of the valve, and judging whether the current pressure difference is greater than zero; in the case that the current pressure difference is less than or equal to zero, determining that the current opening value of the valve is the maximum valve opening value, and send an alarm message; in the case that the current pressure difference is greater than zero, execute the step of determining the corresponding target opening value of the valve under the current pressure difference based on the target flow value.
  • step S104 the current opening value of the valve is adjusted to the target opening value, and the actual flow value of the fluid passing through the valve is calculated.
  • the current opening value of the valve is adjusted to the target opening value to realize the adjustment of the flow value, and the adjusted flow value is calculated in real time to obtain the actual flow value.
  • step S106 if the actual flow value is not equal to the target flow value, the current opening value of the valve is adjusted so that the difference between the actual flow value and the target flow value falls within the preset flow value range.
  • the actual flow value is equal to the target flow value, it means that the flow value of the fluid passing through the valve meets the flow demand, and the opening of the valve remains unchanged.
  • the pressure difference constantly adjusts the current opening value of the valve, so that the actual flow value tends to be consistent with the target flow value, so that the fluid flowing through the valve meets the flow demand.
  • the valve opening control method determines the corresponding target opening value of the valve under the current pressure difference based on the target flow value; adjusts the current opening value of the valve to the target opening value, and calculates the flow through The actual flow value of the fluid of the valve; when the actual flow value is not equal to the target flow value, adjust the current opening value of the valve so that the difference between the actual flow value and the target flow value belongs to the preset flow value range,
  • the problem in the related art that it is difficult to adjust the opening of the valve according to the flow requirement is solved.
  • the current opening value of the valve is adjusted through the target flow value, so that the actual flow value approaches the target flow value, and then the effect of flexibly adjusting the valve opening according to the flow requirement is achieved.
  • determining the corresponding target opening value of the valve under the current pressure difference based on the target flow value includes: calculating the target parameter of the fluid according to the target flow value and the pressure difference Value, wherein, the target parameter value and the opening value of the valve have a mapping relationship, and the type of the target parameter value is one of the following: resistance number, flow coefficient; determine the target opening value according to the target parameter value and the mapping relationship.
  • the resistance number is the pressure loss that must be overcome when the fluid flows in the pipeline, and it is the characteristic coefficient of the pipeline resistance.
  • the resistance value and the opening value of the valve have a mapping relationship, and the resistance value of the fluid can be obtained, so as to determine the target opening value according to the mapping relationship between the resistance value and the opening value.
  • the flow coefficient represents the flow capacity of the valve, which is defined as: when the regulating valve is fully opened, the pressure difference between the front and rear ends of the valve is 100KPa, and the fluid density is 1000Kg/m3 (that is, normal temperature water). Regulate the flow rate of the valve.
  • the flow coefficient and the opening value of the valve have a mapping relationship, and the flow coefficient value of the fluid can be calculated, so as to determine the target opening value according to the mapping relationship between the flow coefficient value and the opening value.
  • calculating the target parameter value of the fluid according to the target flow value and pressure difference includes: when the temperature change value of the fluid belongs to the preset In the case of temperature value range, calculate the resistance value of the fluid according to the target flow value and pressure difference, and determine the resistance value as the target parameter value; or calculate the flow coefficient value of the fluid according to the target flow value, pressure difference and preset density, and Determine the flow coefficient value as the target parameter value; when the temperature change value of the fluid does not belong to the preset temperature value range, determine the current density of the fluid according to the current temperature of the fluid, and calculate the fluid density according to the target flow value, pressure difference and current density The flow coefficient value of , and determine the flow coefficient value as the target parameter value.
  • the density can be considered as a constant.
  • the resistance value can be obtained by formula 1, or by Formula 2 calculates the discharge coefficient value, and determines the resistance value or discharge coefficient value as the target parameter.
  • the preset range is the range in which the target parameter value falls when the valve is working normally.
  • the target opening is determined according to the target parameter value and the mapping relationship before the value, the method also includes: judging whether the target parameter value belongs to the preset range; when the target parameter value is greater than the maximum value corresponding to the preset range, or less than the minimum value corresponding to the preset range, sending a warning message ; When the target parameter value belongs to the preset range, execute the step of determining the target opening value according to the target parameter value and the mapping relationship.
  • the determination method of the maximum value and minimum value corresponding to the preset range is also different.
  • the maximum value corresponding to the preset range The value can be the target parameter value corresponding to the maximum valve opening
  • the minimum value corresponding to the preset range can be the target parameter value corresponding to the minimum valve opening
  • the maximum value corresponding to the preset range It may be the target parameter value corresponding to the minimum valve opening
  • the minimum value corresponding to the preset range may be the target parameter value corresponding to the maximum valve opening.
  • the target parameter value when the target parameter value is greater than the maximum value corresponding to the preset range, it indicates that the valve opening is greater than the maximum opening, and an alarm message is issued; when the target parameter value is less than the minimum value corresponding to the preset range, it indicates that the valve opening If it is less than the minimum opening, an alarm message will be issued; and if the target parameter value is within the preset range, it means that the valve is working normally, and the target opening value is determined.
  • determining the target opening value according to the target parameter value and the mapping relationship includes: when the mapping relationship is represented by a mapping table, matching according to the target parameter value The parameter value in the mapping table, and obtain the valve opening corresponding to the matched parameter value, and determine the target opening value according to the valve opening corresponding to the matching parameter value, wherein, the mapping table contains the relationship between the parameter value and the valve opening Correspondence; in the case that the mapping relationship is represented by a preset relational expression, the valve opening corresponding to the target parameter value is determined based on the preset relational expression, and the valve opening corresponding to the target parameter value is determined as the target opening value, where , the preset relationship is determined by the corresponding relationship between the parameter value and the valve opening in the mapping table.
  • the mapping relationship is represented by a mapping table, as shown in Table 2, the mapping table lists the opening degree of the valve and the resistance number, or the one-to-one correspondence between the opening degree of the valve and the flow coefficient relationship, the mapping table can be given by the valve manufacturer, or it can be measured during the application of the valve.
  • Valve opening % Resistance number S 3 Flow coefficient KV 1 ... ... 2 ... ... 3 the the ... the 100 ... ...
  • the parameters can be matched in Table 2 to obtain one or two matched parameters.
  • the approximate The opening degree of the valve can be determined by the method, and the opening degree of the valve can be determined according to the interpolation method when the two matching parameters are obtained.
  • the mapping relationship is represented by a preset relational expression.
  • a preset relational expression since there is a one-to-one correspondence between the opening degree of the valve and the resistance value, the opening degree and the flow coefficient, regression analysis can be adopted method to find out the correlation between the opening degree and the resistance number, thereby obtaining the first preset relational expression reflecting the correlation, and adopting the regression analysis method to find out the correlation between the opening degree and the flow coefficient, thus obtaining the correlation expression reflecting the correlation
  • a second preset relational expression is used, and the valve opening is further calculated based on the first preset relational expression or the second preset relational expression.
  • the current opening value of the valve is adjusted to the target opening value, and the flow through the valve is calculated.
  • the actual flow value of the fluid includes: adjusting the current opening value of the valve to the target opening value, and obtaining the updated current pressure difference; when the temperature change value of the fluid belongs to the preset temperature value range, according to the target opening value value, the updated current pressure difference to calculate the actual flow value, or calculate the actual flow value based on the target opening value, the updated current pressure difference and the preset density; when the temperature change value of the fluid does not belong to the preset temperature value range
  • the current density of the fluid is determined according to the current temperature of the fluid, and the actual flow value is calculated according to the target opening value, the updated current pressure difference and the current density.
  • the actual flow value can be obtained by formula 1 given the resistance number and the updated pressure difference; the given resistance number, the updated pressure difference and the preset density can be calculated by formula 2 Find the actual flow value.
  • the density is a variable. As shown in Table 1, the density corresponding to the current temperature value of the fluid can be determined according to the temperature density table, given the resistance number, the updated pressure difference and the current density, Then calculate the actual flow value according to formula two.
  • the valve opening control method when the actual flow value is not equal to the target flow value, the current flow of the valve is adjusted.
  • the opening value so that the difference between the actual flow value and the target flow value belongs to the preset flow value range includes: when the actual flow value is greater than the target flow value, reduce the target opening value so that the actual flow value The difference between the target flow value and the target flow value belongs to the preset flow value range; when the actual flow value is less than the target flow value, increase the target opening value so that the difference between the actual flow value and the target flow value belongs to Preset flow value range.
  • the current opening value of the valve is continuously adjusted so that the actual flow value approaches the target flow value, so that the fluid flow value meets the flow demand.
  • the valve includes a valve body and a controller
  • the controller includes a communication interface and/or a human-computer interaction module, wherein the communication interface is used to receive the target flow value Or send the target signal value, the human-computer interaction module is used to set the target flow value, and display the target flow value and/or display the target signal value, wherein the target signal value includes at least one of the following: current pressure difference, target opening value and Actual flow value.
  • the communication interface can be a 485 communication interface, which can input signals, such as target flow rate, and output signals, such as valve inlet and outlet pressure, opening degree, flow rate, etc.
  • the human-computer interaction module can include a display screen and operation buttons, which can set or modify parameters, such as the target flow rate, and can also display various information, such as the inlet and outlet pressure, opening degree, and flow rate of the valve.
  • FIG. 2 it is a schematic diagram of an optional valve provided in the embodiment of the present application.
  • the controller can obtain the inlet pressure value and outlet pressure of the valve. Value, and obtain the target flow value determined by the communication interface or human-computer interaction module, so as to calculate the target signal value and control the valve opening according to the obtained parameters.
  • FIG. 3 it is a schematic diagram of an optional valve provided in the embodiment of the present application.
  • the controller can obtain the inlet pressure value and outlet pressure of the valve. value and the current temperature value of the fluid, and obtain the target flow value determined by the communication interface or human-computer interaction module, so as to calculate the target signal value and control the valve opening according to the obtained parameters.
  • the flow dynamic parameters can be input through the communication interface, and the opening of the valve can be automatically adjusted according to the pressure difference between the inlet and outlet of the valve, so as to realize precise flow control.
  • the flow parameters are input through the communication interface and the human-computer interaction module, and the valve opening is automatically adjusted according to the pressure difference between the inlet and outlet of the valve to realize digital constant flow regulation.
  • the real-time flow value can be calculated and output through the intelligent interface and man-machine interface to realize the function of a digital flowmeter with output.
  • Fig. 4 is a flow chart of an optional valve opening control method according to an embodiment of the present application. As shown in Figure 4, the method includes:
  • KV is greater than the value corresponding to the maximum opening of the valve, and whether it is smaller than the value corresponding to the minimum opening of the valve. If it is greater than the value corresponding to the maximum opening of the valve, it means that the valve is at the maximum opening and an alarm is issued.
  • valve inlet pressure P1, valve outlet pressure P2 and fluid temperature T calculate whether the actual flow Q* is equal to Q, if it is equal, keep the valve opening, if it is greater than , properly reduce the valve opening, and further calculate the actual flow Q*, until the actual flow Q* is equal to Q, in the case of less than, appropriately increase the valve opening, and further calculate the actual flow Q*, until the actual flow Q* equal to Q.
  • Fig. 5 is a flowchart of an optional valve opening control method according to an embodiment of the present application. As shown in Figure 5, the method includes:
  • S is less than the value corresponding to the maximum opening of the valve, and whether it is greater than the value corresponding to the minimum opening of the valve. If it is greater than the value corresponding to the minimum opening of the valve, it means that the valve is at the maximum opening and an alarm is issued; if it is in compliance, check the valve opening and the table corresponding to S to determine the valve opening X, or Use the calculation formula to find the opening degree X of the water valve, and control the valve to execute according to the opening degree X.
  • valve inlet pressure P1, valve outlet pressure P2 and fluid temperature T calculate whether the actual flow Q* is equal to Q, if it is equal, keep the valve opening, if it is greater than , properly reduce the valve opening, and further calculate the actual flow Q*, until the actual flow Q* is equal to Q, in the case of less than, appropriately increase the valve opening, and further calculate the actual flow Q*, until the actual flow Q* equal to Q.
  • the resistance number or flow coefficient of the valve is calculated according to the valve pressure difference and the set flow value, and the valve opening is calculated according to the resistance number or flow coefficient, and when the flow value is not equal to the set flow value Under this condition, the opening of the valve is constantly adjusted, and the purpose of accurate flow regulation through the valve is realized.
  • the embodiment of the present application also provides a valve opening control device. It should be noted that the valve opening control device in the embodiment of the present application can be used to implement the valve opening control provided in the embodiment of the present application. method. The device for controlling the valve opening provided by the embodiment of the present application is introduced below.
  • Fig. 6 is a schematic diagram of a valve opening control device according to an embodiment of the present application. As shown in FIG. 6 , the device includes: a first determination unit 10 , a calculation unit 20 and an adjustment unit 30 .
  • the first determining unit 10 is configured to determine a corresponding target opening value of the valve under the current pressure difference based on the target flow value.
  • the calculation unit 20 is used to adjust the current opening value of the valve to a target opening value, and calculate the actual flow value of the fluid passing through the valve.
  • the adjustment unit 30 is used to adjust the current opening value of the valve when the actual flow value is not equal to the target flow value, so that the difference between the actual flow value and the target flow value falls within the preset flow value range.
  • the valve opening control device uses the first determination unit 10 to determine the corresponding target opening value of the valve under the current pressure difference based on the target flow value; the calculation unit 20 adjusts the current opening value of the valve to the target opening value, and calculate the actual flow value of the fluid flowing through the valve; when the actual flow value is not equal to the target flow value, the adjustment unit 30 adjusts the current opening value of the valve so that the difference between the actual flow value and the target flow value The difference between them belongs to the preset flow value range, which solves the problem that it is difficult to adjust the valve opening according to the flow requirement in the related technology.
  • the current opening value of the valve is adjusted through the target flow value so that the actual flow value approaches the target flow value. Furthermore, the effect of flexibly adjusting the opening of the valve according to the flow requirement is achieved.
  • the first determination unit 10 includes: a first calculation module, which is used to calculate the target parameter value of the fluid according to the target flow value and the pressure difference, wherein the target The parameter value and the opening value of the valve have a mapping relationship, and the type of the target parameter value is one of the following: resistance number, flow coefficient; a determination module is used to determine the target opening value according to the target parameter value and the mapping relationship.
  • the first calculation module includes: a first calculation sub-module, configured to calculate the temperature change value of the fluid according to the preset temperature value range Calculate the resistance value of the fluid with the target flow value and pressure difference, and determine the resistance value as the target parameter value; or calculate the flow coefficient value of the fluid according to the target flow value, pressure difference and preset density, and determine the flow coefficient value as the target parameter value; the second calculation submodule is used to determine the current density of the fluid according to the current temperature of the fluid when the temperature change value of the fluid does not belong to the preset temperature value range, and calculate the fluid according to the target flow value, pressure difference and current density The flow coefficient value of , and determine the flow coefficient value as the target parameter value.
  • a first calculation sub-module configured to calculate the temperature change value of the fluid according to the preset temperature value range Calculate the resistance value of the fluid with the target flow value and pressure difference, and determine the resistance value as the target parameter value; or calculate the flow coefficient value of the fluid according to the target flow value, pressure difference and preset density, and
  • the device further includes: a judging module, used to judge whether the target parameter value belongs to The preset range; the alarm module is used to send an alarm message when the target parameter value is greater than the maximum value corresponding to the preset range, or is smaller than the minimum value corresponding to the preset range; the execution module is used to set the target parameter value If the value belongs to the preset range, the step of determining the target opening value according to the target parameter value and the mapping relationship is performed.
  • a judging module used to judge whether the target parameter value belongs to The preset range
  • the alarm module is used to send an alarm message when the target parameter value is greater than the maximum value corresponding to the preset range, or is smaller than the minimum value corresponding to the preset range
  • the execution module is used to set the target parameter value If the value belongs to the preset range, the step of determining the target opening value according to the target parameter value and the mapping relationship is performed.
  • the determining module includes: a first determining submodule, configured to match the mapping table according to the target parameter value when the mapping relationship is represented by a mapping table The parameter value in , and obtain the valve opening corresponding to the matched parameter value, and determine the target opening value according to the valve opening corresponding to the matched parameter value, where the mapping table contains the corresponding relationship between the parameter value and the valve opening ;
  • the second determination sub-module is used to determine the valve opening corresponding to the target parameter value based on the preset relationship when the mapping relationship is represented by a preset relationship, and determine the valve opening corresponding to the target parameter value as The target opening value, wherein the preset relationship is determined by the corresponding relationship between the parameter value and the valve opening in the mapping table.
  • the device further includes: an acquisition unit, used to acquire The current pressure difference of the valve, and judge whether the current pressure difference is greater than zero; the second determination unit is used to determine the current opening value of the valve as the maximum valve opening value when the current pressure difference is less than or equal to zero, and send an alarm message ; The execution unit is used to execute the step of determining the corresponding target opening value of the valve under the current pressure difference based on the target flow value when the current pressure difference is greater than zero.
  • the calculation unit 20 includes: a first adjustment module, configured to adjust the current opening value of the valve to the target opening value, and obtain the updated The current pressure difference; the second calculation module, used to calculate the actual flow value according to the target opening value and the updated current pressure difference when the temperature change value of the fluid belongs to the preset temperature value range, or according to the target opening value , the updated current pressure difference and the preset density to calculate the actual flow value; the third calculation module is used to determine the current density of the fluid according to the current temperature of the fluid when the temperature change value of the fluid does not belong to the range of the preset temperature value , and calculate the actual flow value according to the target opening value, the updated current pressure difference and the current density.
  • the adjustment unit 30 includes: a second adjustment module, configured to reduce the target opening value when the actual flow value is greater than the target flow value, so that the difference between the actual flow value and the target flow value belongs to the preset flow value range; the third adjustment module is used to increase the target opening value when the actual flow value is less than the target flow value, so that the actual The difference between the flow value and the target flow value belongs to the preset flow value range.
  • the valve includes a valve body and a controller
  • the controller includes a communication interface and/or a human-computer interaction module, wherein the communication interface is used to receive the target flow value Or send the target signal value, the human-computer interaction module is used to set the target flow value, and display the target flow value and/or display the target signal value, wherein the target signal value includes at least one of the following: current pressure difference, target opening value and Actual flow value.
  • the control device of the valve opening includes a processor and a memory, and the above-mentioned first determination unit 10, the calculation unit 20 and the adjustment unit 30, etc. are all stored in the memory as program units, and the above-mentioned program units stored in the memory are executed by the processor to achieve the corresponding functions.
  • the processor includes a kernel, and the kernel fetches corresponding program units from the memory.
  • One or more kernels can be set, and the problem that it is difficult to adjust the valve opening according to flow requirements in related technologies can be solved by adjusting kernel parameters.
  • Memory may include non-permanent memory in computer-readable media, in the form of random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM), memory including at least one memory chip.
  • RAM random access memory
  • ROM read-only memory
  • flash RAM flash memory
  • the embodiment of the present application also provides a non-volatile storage medium, the non-volatile storage medium includes a stored program, wherein, when the program is running, the device where the non-volatile storage medium is located is controlled to perform a valve opening control method.
  • the embodiment of the present application also provides an electronic device, including a processor and a memory; computer-readable instructions are stored in the memory, and the processor is used to run the computer-readable instructions, wherein, when the computer-readable instructions are running, a valve opening degree control method.
  • the electronic device herein may be a server, a PC, a PAD, a mobile phone, and the like.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions
  • the device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
  • a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
  • processors CPUs
  • input/output interfaces network interfaces
  • memory volatile and non-volatile memory
  • Memory may include non-permanent storage in computer readable media, in the form of random access memory (RAM) and/or nonvolatile memory such as read only memory (ROM) or flash RAM.
  • RAM random access memory
  • ROM read only memory
  • flash RAM flash random access memory
  • Computer-readable media including both permanent and non-permanent, removable and non-removable media, can be implemented by any method or technology for storage of information.
  • Information may be computer readable instructions, data structures, modules of a program, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Flash memory or other memory technology, Compact Disc Read-Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, Magnetic tape cartridge, tape magnetic disk storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a computing device.
  • computer-readable media excludes transitory computer-readable media, such as modulated data signals and carrier waves.

Abstract

Est divulgué un procédé de commande du degré d'ouverture d'une soupape. Le procédé comprend : sur la base d'une valeur d'écoulement cible, la détermination d'une valeur de degré d'ouverture cible correspondant à une soupape sous la différence de pression actuelle ; l'ajustement de la valeur de degré d'ouverture actuelle de la soupape sur la valeur de degré d'ouverture cible, et le calcul de la valeur d'écoulement réelle d'un fluide qui s'écoule à travers la soupape ; et lorsque la valeur d'écoulement réelle n'est pas égale à la valeur d'écoulement cible, l'ajustement de la valeur de degré d'ouverture actuelle de la soupape, de telle sorte que la différence entre la valeur d'écoulement réelle et la valeur d'écoulement cible s'inscrive à l'intérieur d'une plage de valeurs d'écoulement prédéfinie. Au moyen du procédé, le problème selon lequel il est difficile d'ajuster le degré d'ouverture d'une soupape en fonction d'une exigence d'écoulement est résolu. L'invention concerne en outre un appareil de commande du degré d'ouverture d'une soupape, et un support de stockage non volatil ainsi qu'un processeur.
PCT/CN2022/084248 2021-08-23 2022-03-31 Procédé et appareil de commande du degré d'ouverture de soupape, et support de stockage non volatil ainsi que processeur WO2023024510A1 (fr)

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