Valve control system with variable power supply voltage, control system and readable storage medium

Abstract

The present invention discloses a valve control system with variable power supply voltage, a control system and a readable storage medium. The system includes a controller, a branch selection module, a forward and reverse automatic selection module, a first forward branch, a second forward branch, a first reverse branch and a second reverse branch. The method includes determining a valve opening voltage V1 and a valve closing voltage V2; determining whether to select the first forward branch or the second forward branch based on V1; determining whether to select the first reverse branch or the second reverse branch based on V2; the valve outputs a position indication signal X; the controller determines the rotation direction of the valve motor based on X, outputs an automatic selection control signal Y, and selects the forward branch or the reverse branch based on Y. The present invention controls the branch selection module by setting a controller, and selects the connectivity of the branch through the branch selection module, so that different variable voltages can be provided when the main power supply voltage remains unchanged, thereby being able to control multiple types of valves and increasing the applicability of the control system.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment control, and in particular to a valve control system with variable power supply voltage, a control system and a readable storage medium. Background Art

[0002] Currently, there are many different types of industrial electric valves, such as electric ball valves, electric gate valves, electric stop valves, and electric regulating valves. Different valves require different valve control systems. One important reason is that some valves switch at 380V, while others switch at different voltages. For example, a certain type of electric gate valve has a 380V opening voltage and a 220V closing voltage.

[0003] Therefore, the existing control system cannot fully meet various valve control requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the valve control system cannot be used to control various valves. The purpose is to provide a valve control system with variable power supply voltage, a control system and a readable storage medium, which solves the problem of applicability of the control system.

[0005] The present invention is achieved through the following technical solutions:

[0006] A valve control system with variable supply voltage, comprising:

[0007] A controller having a signal input terminal, an output terminal, a first driving terminal and a second driving terminal, wherein the output terminal of the controller is electrically connected to the feedback signal terminal of the valve;

[0008] A branch gating module having a signal input terminal, a first forward output terminal, a second forward output terminal, a first reverse output terminal, and a second reverse output terminal, wherein the signal input terminal of the branch gating module is electrically connected to the output terminal of the controller;

[0009] a first forward rotation branch having an input end and an output end, wherein the first forward rotation output end is electrically connected to the input end of the first forward rotation branch;

[0010] a second forward rotation branch having an input end, a driving end, and an output end, wherein the second forward rotation output end is electrically connected to the input end of the second forward rotation branch, and the first driving end is electrically connected to the driving end of the second forward rotation branch;

[0011] a first inverting branch having an input end and an output end, wherein the first inverting output end is electrically connected to the input end of the first inverting branch;

[0012] a second inverting branch having an input end, a driving end, and an output end, wherein the second inverting output end is electrically connected to the input end of the second inverting branch, and the second driving end is electrically connected to the driving end of the second inverting branch;

[0013] The output end of the first forward rotation branch, the output end of the second forward rotation branch, the output end of the first reverse rotation branch, and the output end of the second reverse rotation branch are all electrically connected to the voltage end of the valve.

[0014] Specifically, the output end of the controller includes a first output end, a second output end, and a third output end;

[0015] The branch gating module includes:

[0016] A forward and reverse automatic gating module, comprising a forward output terminal, a reverse output terminal, a signal input terminal and a power supply terminal, wherein the signal input terminal of the forward and reverse automatic gating module is electrically connected to the first output terminal of the controller;

[0017] A forward branch active gating module having a first input end, a second input end, a first forward output end, and a second forward output end, wherein the first input end of the forward branch active gating module is electrically connected to the forward output end of the forward and reverse automatic gating module, and the second input end of the forward branch active gating module is electrically connected to the second output end of the controller;

[0018] The inverting branch active gating module has a first input end, a second input end, a first inverting output end, and a second inverting output end. The first input end of the inverting branch active gating module is electrically connected to the inverting output end of the forward and reverse automatic gating module, and the second input end of the inverting branch active gating module is electrically connected to the third output end of the controller.

[0019] Optionally, the first forward branch is a wire directly connected to the first forward output terminal of the forward branch active gating module and the valve;

[0020] The first inverting branch is a wire directly connecting the first inverting output end of the inverting branch active gating module and the valve.

[0021] Optionally, the second forward branch includes a forward rectifier and a forward inverter, the input end of the forward rectifier is electrically connected to the second forward output end of the forward branch active gating module, the output end of the forward rectifier is electrically connected to the input end of the forward inverter, and the output end of the forward inverter is electrically connected to the valve;

[0022] The second inverting branch includes an inverting rectifier and an inverting inverter, the input end of the inverting rectifier is electrically connected to the second inverting output end of the inverting branch active gating module, the output end of the inverting rectifier is electrically connected to the input end of the inverting inverter, and the output end of the inverting inverter is electrically connected to the valve;

[0023] The first driving end of the controller is electrically connected to the forward rectifier and the forward inverter through a driving circuit; the second driving end of the controller is electrically connected to the reverse rectifier and the reverse inverter through a driving circuit.

[0024] Furthermore, the system also includes a three-phase power supply for power supply, and the power supply end of the forward and reverse automatic selection module is electrically connected to the three-phase power supply.

[0025] Optionally, the forward and reverse automatic gating module, the forward branch active gating module, and the reverse branch active gating module are motor forward and reverse solid-state relays; or gating modules with interlocking functions composed of solid-state relays or contactors.

[0026] A valve control method with a variable supply voltage is provided, based on the above-mentioned valve control system with a variable supply voltage, and the control method includes:

[0027] Determine the valve opening voltage V1 and valve closing voltage V2;

[0028] The controller determines whether the forward branch active gating module selects the first forward branch or the second forward branch according to V1;

[0029] The controller determines, according to V2, whether the inverting branch active gating module gates the first inverting branch or the second inverting branch;

[0030] Valve output position indication signal X;

[0031] The controller determines the rotation direction of the valve motor according to X and outputs the automatic gating control signal Y. The forward and reverse automatic gating module selects the forward branch active gating module or the reverse branch active gating module according to Y.

[0032] Optionally, if V1=380V, the controller controls the forward branch active gating module to gating the first forward branch; if V1≠380V, the controller controls the forward branch active gating module to gating the second forward branch, and the controller controls the forward rectifier and the forward inverter to make the output voltage of the second forward branch equal to V1;

[0033] If V2=380V, the controller controls the reversing branch active gating module to gating the first reversing branch; if V2≠380V, the controller controls the reversing branch active gating module to gating the second reversing branch, and the controller controls the reversing rectifier and the reversing inverter to make the output voltage of the second reversing branch equal to V2.

[0034] Optionally, the position indication signal X includes a valve opening feedback signal X1 and a valve closing feedback signal X2;

[0035] When the controller receives X1, the output signal causes the forward and reverse automatic gating module to gating the reverse branch active gating module;

[0036] When the controller receives X2, the output signal is that the forward and reverse automatic selection module selects the forward branch brake selection module.

[0037] A computer-readable storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the steps of the valve control method with variable supply voltage as described above.

[0038] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0039] The present invention sets two forward branches and two reverse branches, and sets a controller to control the branch selection module. The branch selection module selects the connectivity of the branch, so that different variable voltages can be provided when the main power supply voltage remains unchanged, thereby being able to control multiple types of valves and increasing the applicability of the control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and the accompanying drawings are included in and constitute a part of this specification and do not constitute a limitation of the embodiments of the present invention.

[0041] Figure 1 It is a structural block diagram of a valve control system with variable supply voltage according to the present invention. DETAILED DESCRIPTION

[0042] To make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the relevant content and are not intended to limit the present invention.

[0043] It should also be noted that for the convenience of description, Figure 1 Only the parts relevant to the present invention are shown.

[0044] In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] Example 1

[0046] A valve control system with variable power supply voltage comprises a controller, a branch selection module, a first forward branch, a second forward branch, a first reverse branch and a second reverse branch.

[0047] In this embodiment, the controller has a signal input terminal, an output terminal, a first drive terminal and a second drive terminal, the branch selection module has a signal input terminal, a first forward output terminal, a second forward output terminal, a first reverse output terminal and a second reverse output terminal, the first forward branch has an input terminal and an output terminal, the second forward branch has an input terminal, a drive terminal and an output terminal, the first reverse branch has an input terminal and an output terminal, and the second reverse branch has an input terminal, a drive terminal and an output terminal.

[0048] The connection method is as follows: the output end of the controller is electrically connected to the feedback signal end of the valve, the signal input end of the branch selection module is electrically connected to the output end of the controller, the first forward output end is electrically connected to the input end of the first forward branch, the second forward output end is electrically connected to the input end of the second forward branch, the first drive end is electrically connected to the drive end of the second forward branch, the first reverse output end is electrically connected to the input end of the first reverse branch, the second reverse output end is electrically connected to the input end of the second reverse branch, and the second drive end is electrically connected to the drive end of the second reverse branch;

[0049] The output end of the first forward branch, the output end of the second forward branch, the output end of the first reverse branch and the output end of the second reverse branch are all electrically connected to the voltage end of the valve. The power supply end of the branch selection module is electrically connected to the three-phase power supply for power supply.

[0050] The controller receives the feedback signal from the valve to determine whether the valve motor needs to rotate forward or reverse, and obtains the forward voltage and reverse voltage of the valve motor. According to the demand, the controller determines the connection between the valve and the three-phase power supply through the branch selection module to make the valve motor work.

[0051] In this embodiment, the first forward branch and the first reverse branch are directly connected branches, that is, they provide the valve motor with a common 380V voltage. The second forward branch and the second reverse branch are variable branches, and their output voltages can be adjusted according to specific circumstances.

[0052] The specific structure of the branch selection module is described below. The controller includes multiple output terminals, namely a first output terminal, a second output terminal, and a third output terminal.

[0053] The branch gating module includes a forward and reverse automatic gating module, a forward branch active gating module and a reverse branch active gating module.

[0054] The forward and reverse automatic gating module has a forward output terminal, a reverse output terminal, a signal input terminal and a power supply terminal. The forward branch active gating module has a first input terminal, a second input terminal, a first forward output terminal and a second forward output terminal. The reverse branch active gating module has a first input terminal, a second input terminal, a first reverse output terminal and a second reverse output terminal.

[0055] The first forward output terminal and the second forward output terminal of the forward branch active selection module are the first forward output terminal and the second forward output terminal of the branch selection module.

[0056] The first inverting output terminal and the second inverting output terminal of the inverting branch active gating module are the first inverting output terminal and the second inverting output terminal of the branch gating module.

[0057] The signal input end of the forward and reverse automatic gating module is electrically connected to the first output end of the controller. The first output end of the controller outputs the forward and reverse branch automatic gating control signal. The forward and reverse automatic gating module can automatically select the forward branch or the reverse branch. Specifically, when the forward and reverse automatic gating module receives the forward and reverse branch gating signal from the controller, it selects the forward branch or the reverse branch.

[0058] At this time, the controller signal is controlled by the valve position indication signal. When the position indication signal is a valve open feedback signal, the signal sent by the controller can only be a valve close signal. When the position indication signal is a valve close feedback signal, the signal sent by the controller can only be a valve open signal.

[0059] The first input end of the forward branch active gating module is electrically connected to the forward output end of the forward and reverse automatic gating module, and the second input end of the forward branch active gating module is electrically connected to the second output end of the controller; the first forward output end of the forward branch active gating module is electrically connected to the first forward branch, and the second forward output end of the forward branch active gating module is electrically connected to the second forward branch.

[0060] The forward branch active selection module is used to select the first and second forward branches. This is active selection. When the controlled valve is a standard valve (opening voltage 380V), the controller controls the forward branch active selection module to select the first forward branch. When the controlled valve is a different valve (opening voltage other than 380V), the controller controls the forward branch active selection module to select the second forward branch.

[0061] The first input end of the inverting branch active gating module is electrically connected to the inverting output end of the forward and reverse automatic gating module, and the second input end of the inverting branch active gating module is electrically connected to the third output end of the controller. The first inverting output end of the inverting branch active gating module is electrically connected to the first inverting branch, and the second inverting output end of the inverting branch active gating module is electrically connected to the second inverting branch.

[0062] The active reversing branch selection module is used to select the first and second reversing branches. When the controlled valve is a standard valve (380V closed), the controller controls the active reversing branch selection module to select the first reversing branch. When the controlled valve is a different valve (with a non-380V closed voltage), the controller controls the active reversing branch selection module to select the second reversing branch.

[0063] In common cases, the voltage of the three-phase power supply is 380V. Therefore, in this embodiment, the first forward branch is a wire directly connected to the first forward output terminal of the forward branch active selection module and the valve;

[0064] The first inverting branch is a wire directly connected to the first inverting output end of the inverting branch active gating module and the valve.

[0065] In order to transform the voltage connected to the valve motor, the second forward branch includes a forward rectifier and a forward inverter, and the second reverse branch includes a reverse rectifier and a reverse inverter.

[0066] The input end of the forward rectifier is electrically connected to the second forward output end of the forward branch active gating module, the output end of the forward rectifier is electrically connected to the input end of the forward inverter, and the output end of the forward inverter is electrically connected to the valve;

[0067] The forward rectifier and forward inverter are used to adjust the power supply voltage. The power supply voltage is rectified by the forward rectifier into a DC voltage, which is then converted to the required AC voltage by the forward inverter.

[0068] The input end of the inverting rectifier is electrically connected to the second inverting output end of the inverting branch active gating module, the output end of the inverting rectifier is electrically connected to the input end of the inverting inverter, and the output end of the inverting inverter is electrically connected to the valve;

[0069] The function of the inverting rectifier and inverting inverter is to adjust the power supply voltage. The power supply voltage is rectified into a DC voltage by the inverting rectifier, and then converted into the required AC voltage by the inverting inverter.

[0070] The first driving end of the controller is electrically connected to the forward rectifier and the forward inverter through a driving circuit; the second driving end of the controller is electrically connected to the reverse rectifier and the reverse inverter through a driving circuit.

[0071] The rectifier inverter drive circuit can adjust the voltage transformation capability to meet the valve switching requirements.

[0072] The automatic forward / reverse gating module, the active forward branch gating module, and the active reverse branch gating module can use dedicated motor forward / reverse solid-state relays or interlocking gating modules composed of ordinary solid-state relays or contactors. All three gating modules can use the interlocking gating module solution described above.

[0073] Example 2

[0074] A valve control method with variable supply voltage, based on the above-mentioned valve control system with variable supply voltage, includes:

[0075] The first step is to determine the valve opening voltage V1 and valve closing voltage V2, and input V1 and V2 into the controller.

[0076] In the second step, if V1 = 380V, the controller controls the forward branch active gating module to gating the first forward branch; if V1≠380V, the controller controls the forward branch active gating module to gating the second forward branch, and the controller controls the forward rectifier and the forward inverter to make the output voltage of the second forward branch equal to V1;

[0077] If V2=380V, the controller controls the reversing branch active gating module to gating the first reversing branch; if V2≠380V, the controller controls the reversing branch active gating module to gating the second reversing branch, and the controller controls the reversing rectifier and the reversing inverter to make the output voltage of the second reversing branch equal to V2.

[0078] In the third step, the valve outputs a position indication signal X to the controller. The position indication signal X includes a valve open feedback signal X1 and a valve close feedback signal X2.

[0079] When the controller receives X1, the output signal causes the forward and reverse automatic gating module to gating the reverse branch active gating module;

[0080] When the controller receives X2, the output signal is that the forward and reverse automatic selection module selects the forward branch brake selection module.

[0081] Example 3

[0082] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the valve control method with variable supply voltage as described above.

[0083] Without loss of generality, computer-readable media may include computer storage media and communication media. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instruction data structures, program modules, or other data. Computer storage media includes RAM, ROM, EPROM, EEPROM, flash memory or other solid-state storage technologies, CD-ROM, DVD or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. Of course, those skilled in the art will appreciate that computer storage media is not limited to the aforementioned types. The aforementioned system memory and mass storage devices may be collectively referred to as memory.

[0084] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0085] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0086] It should be understood by those skilled in the art that the above embodiments are merely for the purpose of illustrating the present invention clearly, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above invention, and these changes or modifications are still within the scope of the present invention.

Claims

1. A valve control system with variable power supply voltage, characterized in that: include: A controller having a signal input terminal, an output terminal, a first drive terminal, and a second drive terminal, wherein the output terminal of the controller is electrically connected to the feedback signal terminal of the valve; the output terminal of the controller includes a first output terminal, a second output terminal, and a third output terminal; A branch gating module having a signal input terminal, a first forward output terminal, a second forward output terminal, a first reverse output terminal, and a second reverse output terminal, wherein the signal input terminal of the branch gating module is electrically connected to the output terminal of the controller; a first forward rotation branch having an input end and an output end, wherein the first forward rotation output end is electrically connected to the input end of the first forward rotation branch; a second forward rotation branch having an input end, a driving end, and an output end, wherein the second forward rotation output end is electrically connected to the input end of the second forward rotation branch, and the first driving end is electrically connected to the driving end of the second forward rotation branch; a first inverting branch having an input end and an output end, wherein the first inverting output end is electrically connected to the input end of the first inverting branch; a second inverting branch having an input end, a driving end, and an output end, wherein the second inverting output end is electrically connected to the input end of the second inverting branch, and the second driving end is electrically connected to the driving end of the second inverting branch; The output end of the first forward rotation branch, the output end of the second forward rotation branch, the output end of the first reverse rotation branch, and the output end of the second reverse rotation branch are all electrically connected to the voltage end of the valve; Wherein, the branch gating module includes: A forward and reverse automatic gating module, comprising a forward output terminal, a reverse output terminal, a signal input terminal and a power supply terminal, wherein the signal input terminal of the forward and reverse automatic gating module is electrically connected to the first output terminal of the controller; A forward branch active gating module having a first input end, a second input end, a first forward output end, and a second forward output end, wherein the first input end of the forward branch active gating module is electrically connected to the forward output end of the forward and reverse automatic gating module, and the second input end of the forward branch active gating module is electrically connected to the second output end of the controller; The inverting branch active gating module has a first input end, a second input end, a first inverting output end, and a second inverting output end. The first input end of the inverting branch active gating module is electrically connected to the inverting output end of the forward and reverse automatic gating module, and the second input end of the inverting branch active gating module is electrically connected to the third output end of the controller.

2. A valve control system with variable supply voltage according to claim 1, characterized in that: The first forward branch is a wire directly connected to the first forward output terminal of the forward branch active gating module and the valve; The first inverting branch is a wire directly connecting the first inverting output end of the inverting branch active gating module and the valve.

3. A valve control system with variable supply voltage according to claim 2, characterized in that: The second forward branch includes a forward rectifier and a forward inverter, the input end of the forward rectifier is electrically connected to the second forward output end of the forward branch active gating module, the output end of the forward rectifier is electrically connected to the input end of the forward inverter, and the output end of the forward inverter is electrically connected to the valve; The second inverting branch includes an inverting rectifier and an inverting inverter, the input end of the inverting rectifier is electrically connected to the second inverting output end of the inverting branch active gating module, the output end of the inverting rectifier is electrically connected to the input end of the inverting inverter, and the output end of the inverting inverter is electrically connected to the valve; The first driving end of the controller is electrically connected to the forward rectifier and the forward inverter through a driving circuit; the second driving end of the controller is electrically connected to the reverse rectifier and the reverse inverter through a driving circuit.

4. A valve control system with variable supply voltage according to claim 3, characterized in that: It also includes a three-phase power supply for power supply, and the power supply end of the forward and reverse automatic selection module is electrically connected to the three-phase power supply.

5. A valve control system with variable supply voltage according to claim 4, characterized in that: The forward and reverse automatic gating module, the forward branch active gating module, and the reverse branch active gating module are motor forward and reverse solid-state relays; or A strobe module with interlocking function consisting of solid-state relays or contactors.

6. A valve control method with variable supply voltage, characterized in that: Based on a valve control system with variable supply voltage according to any one of claims 3 to 5, the control method includes: Determine the valve opening voltage V1 and valve closing voltage V2; The controller determines whether the forward branch active gating module selects the first forward branch or the second forward branch according to V1; The controller determines, according to V2, whether the inverting branch active gating module gates the first inverting branch or the second inverting branch; Valve output position indication signal X; The controller determines the rotation direction of the valve motor according to X and outputs the automatic gating control signal Y. The forward and reverse automatic gating module selects the forward branch active gating module or the reverse branch active gating module according to Y.

7. A valve control method with variable supply voltage according to claim 6, characterized in that: If V1=380V, the controller controls the forward branch active selection module to select the first forward branch; if V1≠380V, the controller controls the forward branch active selection module to select the second forward branch, and the controller controls the forward rectifier and forward inverter to make the output voltage of the second forward branch equal to V1; If V2=380V, the controller controls the reverse branch active gating module to gating the first reverse branch; If V2≠380V, the controller controls the inverting branch active gating module to gating the second inverting branch, and the controller controls the inverting rectifier and the inverting inverter to make the output voltage of the second inverting branch equal to V2.

8. The valve control method with variable supply voltage according to claim 6, characterized in that: The position indication signal X includes a valve open feedback signal X1 and a valve close feedback signal X2; When the controller receives X1, the output signal causes the forward and reverse automatic gating module to gating the reverse branch active gating module; When the controller receives X2, the output signal is that the forward and reverse automatic selection module selects the forward branch brake selection module.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 6 to 8 are implemented.

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