CN212658987U - Electric valve control circuit of flow measurement and control instrument - Google Patents
Electric valve control circuit of flow measurement and control instrument Download PDFInfo
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- CN212658987U CN212658987U CN202022091018.0U CN202022091018U CN212658987U CN 212658987 U CN212658987 U CN 212658987U CN 202022091018 U CN202022091018 U CN 202022091018U CN 212658987 U CN212658987 U CN 212658987U
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Abstract
The utility model provides a flow observes and controls appearance motorised valve control circuit, include: the device comprises a switching module, a processor, a signal driving module, a first triggering module, a second triggering module and an electric valve driving module; the switching module is connected with the input end of the processor, the output end of the processor is connected with the input end of the signal driving module, the output end of the signal driving module is connected with the input end of the first triggering module and the input end of the second triggering module, the input end of the first triggering module is further connected with the output end of the processor, the output end of the first triggering module and the output end of the second triggering module are connected with the input end of the electric valve driving module, and the output end of the electric valve driving module is connected with the control end of the electric valve. The utility model is simple in operation, can easily realize the automatic control of motorised valve and manual control's switching, break down when flow pipeline or motorised valve, make things convenient for the staff in time to investigate and handle.
Description
Technical Field
The utility model relates to a flow observes and controls appearance technical field, especially relates to a flow observes and controls appearance motorised valve control circuit.
Background
The automatic flow controller can detect the flow of fluid in a pipeline and automatically adjust the flow to a set flow value by integrally designing flow measurement and flow control, can realize the function of adjusting the flow in real time for the pipeline requiring constant flow output, and has wide application in the fields of chemical engineering, urban water treatment, oil well water injection and the like.
The flow measuring and controlling instrument comprises a flowmeter, an electric valve and an electric valve control circuit, wherein the electric valve control circuit is completely controlled by the flowmeter. After an electric valve control circuit of the flow measurement and control instrument is completely controlled by the flowmeter, if a flow pipeline fails, an electric valve cannot be opened and closed in time; if the electric valve is locked, whether the electric valve works normally cannot be found in time; in addition, when the valve is not required to be automatically controlled or is required to be fully opened or closed, the meter head cover can be opened only for setting, so that the problem of inconvenient use is caused.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention provides an electric valve control circuit for a flow measurement and control instrument, which is used for solving the problem that the electric valve control circuit in the prior art is completely controlled by a flow meter, and cannot be operated in time if a flow pipeline fails; if the electric valve is locked, whether the electric valve works normally cannot be found in time; and when the valve does not need to be automatically controlled or is required to be fully opened and fully closed, the meter head cover can be opened only for setting, so that the problem of inconvenient use is caused.
In order to realize the above-mentioned purpose and other relevant purposes, the utility model provides a flow observes and controls appearance motorised valve control circuit, include: the device comprises a switching module, a processor, a signal driving module, a first triggering module, a second triggering module and an electric valve driving module;
the output end of the switching module is connected with the input end of a processor, the output end of the processor is connected with the input end of the signal driving module, the output end of the signal driving module is respectively connected with the input end of the first triggering module and the input end of the second triggering module, the input end of the first triggering module is further connected with the output end of the processor, the output end of the first triggering module and the output end of the second triggering module are respectively connected with the input end of the electric valve driving module, and the output end of the electric valve driving module is connected with the control end of an external electric valve.
In an embodiment of the present invention, the switching module includes a key S1, a resistor R16, and a capacitor C11;
one end of the key S1 is respectively connected with the input end of the processor, one end of the resistor R16 and one end of the capacitor C11, the other end of the key S1 is connected with the other end of the capacitor C11 and then grounded, and the other end of the resistor R16 is connected with the positive power supply V2.
In an embodiment of the present invention, the signal driving module includes a phase inverter U4A, a transistor Q3, a capacitor C10, and a plurality of resistors;
one end of the resistor R17 is connected with the output end of the processor, the other end of the resistor R17 is connected with one end of the resistor R19 and the base electrode of the triode Q3, the collector electrode of the triode Q3 is connected with one end of the resistor R15, the input end of the inverter U4A and one end of the capacitor C10 respectively, the other end of the resistor R15 is connected with the positive power supply V2, the emitter electrode of the triode Q3, the other end of the resistor R19 and the other end of the capacitor C10 are connected and then grounded, and the output end of the inverter U4A is connected with the input end of the first trigger module and the input end of the second trigger.
In an embodiment of the present invention, the first trigger module includes a valve-opening trigger unit and a valve-closing trigger unit, wherein the valve-opening trigger unit and the valve-closing trigger unit have the same structure.
In an embodiment of the present invention, the valve-closing triggering unit includes an analog switch U3C, a resistor R18, a resistor R20, a capacitor C12, a diode D10, and a diode D9;
one end of the resistor R18 and the input end of the analog switch U3C are connected and then connected with the output end of the processor, the resistor R20 is connected with the capacitor C12 in parallel, one end of the resistor R18 and the negative end of the diode D10 are connected in parallel, the other end of the diode D10 is grounded, the positive end of the diode D10 is connected with the negative end of the diode D9, the positive end of the diode D9 is connected with the output end of the analog switch U3C, the output end of the analog switch U3C is further connected with the input end of the electric valve driving module, and the control end of the analog switch U3C is connected with the output end of the signal driving module.
In an embodiment of the present invention, the second trigger module includes a phase inverter U4B, an analog switch U3A, a key S2, a key S3, a light emitting diode LE2, a light emitting diode LE1, and a plurality of resistors;
one end of a resistor R13 is connected with the output end of the signal driving module and the input end of an inverter U4B respectively, the other end of the resistor R13 is connected with the light emitting diode LE2 in series and then grounded, the output end of the inverter U4B is connected with one end of a resistor R14 and the control end of an analog switch U3A respectively, the other end of a resistor R14 is connected with the light emitting diode LE1 in series and then grounded, the input end of the analog switch U3A is connected with one end of the resistor R5, the other end of the resistor R5 is connected with a positive power supply V2, the output end of the analog switch U3A is connected with one end of a key S2 and one end of a key S3 respectively, and the other end of the key S2 and the other end of.
In an embodiment of the present invention, the electric valve driving module includes an open valve driving unit and a close valve driving unit, wherein the open valve driving unit and the close valve driving unit have the same structure.
In an embodiment of the present invention, the valve closing driving unit includes a thyristor Q2, a relay K2, a diode D8, a resistor R7, and a resistor R12;
one end of a resistor R7 is connected with one end of a resistor R12, the connected public end is respectively connected with the output end of the first trigger module and the output end of the second trigger module, the other end of the resistor R12 is connected with the source electrode of the thyristor Q2 and then grounded, the other end of the resistor R7 is connected with the gate of the thyristor Q2, the drain of the thyristor Q2 is respectively connected with the anode of a diode D8 and the cathode of the power end of a relay K2, the cathode of the diode D8 is connected with the anode of the power end of the relay K2 and then connected with a positive power supply V1, one end of the switch end of the relay K2 is connected with an alternating current power supply, and the other end of the switch end of the relay K.
As above, the utility model discloses a flow observes and controls appearance motorised valve control circuit has increased the function of manual control motorised valve of the same kind on the basis that current motorised valve control circuit is by flowmeter control. The automatic control and the manual control are switched through the switching module, and the manual control function of the electric valve control circuit is realized by arranging the second triggering module between the signal driving module and the electric valve driving module. The utility model is simple in operation, can easily realize the automatic control of motorised valve and manual control's switching, break down when flow pipeline or motorised valve, make things convenient for the staff in time to investigate and handle.
Drawings
Fig. 1 shows a block diagram of the overall structure disclosed in the embodiment of the present invention.
Fig. 2 is a schematic diagram of the switching module and the signal driving module disclosed in the embodiment of the present invention.
Fig. 3 is a schematic wiring diagram of the valve closing triggering unit disclosed in the embodiment of the present invention.
Fig. 4 is a schematic wiring diagram of a second trigger module disclosed in an embodiment of the present invention.
Fig. 5 is a schematic wiring diagram of a valve closing driving unit disclosed in an embodiment of the present invention.
Fig. 6 is a schematic overall wiring diagram disclosed in an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and only the components related to the present invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
Referring to fig. 1, the present invention provides an electric valve control circuit for a flow measurement and control instrument, which specifically includes: the device comprises a switching module, a processor, a signal driving module, a first triggering module, a second triggering module and an electric valve driving module;
referring to fig. 2, the switch module includes a button S1, one end of the button S1 is connected to a pin P2.0 of the processor, and is also connected to a positive power supply V2 through a pull-up resistor R16, and when the user presses the button S1, the pin P2.0 of the processor receives a low signal.
And the processor is used for outputting a corresponding control signal to a subsequent circuit according to the low level signal of the switching module. In this embodiment, the processor is of model MSP 430.
The signal driving module includes a transistor Q3 and an inverter U4A, in this embodiment, the inverter is selected from a CD40106 model.
When the pin P2.0 of the processor receives the low level signal, the output level of the pin P6.7 is inverted, and assuming that the original output is the low level, the inverted output is the high level, at this time, the transistor Q3 is turned on, the input end of the inverter U4A is the low level, and the output signal Control _ out of the output end is the high level. On the contrary, if the original output is high level, the inverted output is low level, at this time, the transistor Q3 is turned off, the input end of the inverter U4A is high level, and the output signal Control _ out of the output end is low level.
Referring to fig. 1, the first trigger module is used for automatically controlling the electric valve control circuit, and includes a valve opening trigger unit and a valve closing trigger unit, where the structures and the operating principles of the valve opening trigger unit and the valve closing trigger unit are the same, and the structure of the valve closing trigger unit is taken as an example in this embodiment for description.
Referring to fig. 2 and 3, the valve closing triggering unit includes an analog switch U3C, in this embodiment, the model of the analog switch is CD 4066.
The control signal CLOSE output by the pin P6.2 of the processor is connected to the input terminal of the analog switch U3C, the control terminal of the analog switch U3C is connected to the output terminal of the signal driving module, and the output terminal of the analog switch U3C is connected to the input terminal of the electric valve driving module.
When the output signal Control _ out at the output end of the signal driving module is at a high level, the switch of the analog switch U3C is turned on, and at this time, the processor outputs a Control signal CLOSE for turning off the valve to the input end of the analog switch U3C, and the output end of the analog switch U3C can connect the Control signal CLOSE to the input end of the electric valve driving module.
Referring to fig. 1, the electric valve driving module includes an open valve driving unit and a close valve driving unit, wherein the open valve driving unit and the close valve driving unit have the same structure and the same operation principle, and the structure of the close valve driving unit is taken as an example in this embodiment for description.
Referring to fig. 5, the valve-closing driving unit includes a thyristor Q2 and a relay K2, a gate of the thyristor Q2 is connected to an output terminal of the valve-closing triggering unit, a drain of the thyristor Q2 is connected to a negative terminal of a power supply terminal of the relay K2, a positive terminal of the power supply terminal of the relay K2 is connected to a positive power supply V1, and a switching terminal of the relay K2 is connected in series between the ac power supply and a valve-closing control terminal of the electric valve.
When the trigger signal D _ CLOSE output by the valve closing trigger unit is input to the grid of the thyristor Q2, the thyristor Q2 is conducted, at the moment, the power supply end of the relay K2 is electrified, the switch contact of the relay K2 is closed, and the valve closing control end of the electric valve is connected with an alternating current power supply, so that the electric valve performs valve closing operation.
Referring to fig. 4, the second trigger module includes an inverter U4B, an analog switch U3A, a key S2 and a key S3, an input terminal of the inverter U4B is connected to an output terminal of the signal driving module, an output terminal of the inverter U4B is connected to a control terminal of the analog switch U3A, an input terminal of the analog switch U3A is connected to the positive power supply V2, output terminals of the analog switch U3A are respectively connected to input terminals of the open-valve driving unit through the key S2, and are connected to input terminals of the close-valve driving unit through the key S3.
When the output signal Control _ out at the output end of the signal driving module is at a high level, the output signal becomes a low level after passing through the inverter U4B, the Control end of the analog switch U3A is at a low level, the analog switch is turned off, and the electric valve Control circuit is in an automatic Control mode.
When the output signal Control _ out at the output end of the signal driving module is at a low level, the output signal becomes a high level after passing through the inverter U4B, the Control end of the analog switch U3A is at a high level at the moment, the analog switch is switched on, the high level at the input end is output to one end of the key S2 and one end of the key S3, the electric valve Control circuit is in a manual Control mode at the moment, the key S2 is pressed, namely the electric valve Control circuit is switched on with the input end of the valve closing driving module, and the electric valve closing is controlled; and when the key S3 is pressed, the key is communicated with the input end of the valve opening driving module, and the electric valve is controlled to open.
Referring to fig. 6, when the button S1 is pressed and the electric valve control circuit is in the manual control mode, the pin P6.2 of the processor and the pin P1.3 of the processor are switched from the output state to the input state, the pin P6.2 of the processor outputs the control signal CLOSE, and the pin P1.3 of the processor outputs the control signal OPEN; when the key S2 or the key S3 is pressed, the trigger signal D _ CLOSE or the trigger signal D _ OPEN becomes high level, and can be fed back to the pin P6.2 or the pin P1.3 of the processor through the diode; if neither the button S2 nor the button S3 is pressed, the pin P6.2 or the pin P1.3 of the processor is at a low level due to the pull-down resistor, and the processor can determine the off state or the on state in the manual control mode by switching between the high level and the low level. In addition, the diode D9 and the diode D10 realize the unidirectional transmission of signals, and also reduce the voltage of the level signals and input the signals into the processor pins.
Referring to fig. 6, the electric valve control circuit of the flow measurement and control instrument of the present invention further includes a power module, the power module includes a transformer T1, a rectifier bridge D1, a voltage stabilizer U1 and a power isolator U2, wherein the specification of the transformer T1 is ac 220V to 12V, the model adopted by the voltage stabilizer U1 is DB307, the model adopted by the voltage stabilizer U1 is LM2576-5, and the model adopted by the power isolator U2 is B0505 LS.
The 220V alternating current power supply is converted into a positive power supply V1 through a transformer T1 and a rectifier bridge D1, and then the positive power supply V2 is obtained through a voltage stabilizer U1 and a power supply isolator U2 at the later stage, so that working voltage is provided for an electric valve control circuit of the flow measurement and control instrument. In this embodiment, the positive power supply V1 is 12V dc voltage, and the positive power supply V2 is 5V dc voltage.
Referring to fig. 6, the electric valve control circuit of the flow measurement and control instrument of the present invention is shown in fig. 6,
when the electronic valve is actually used, the button S1 is pressed, the level output by the pin P6.7 of the processor is inverted, when the output is high level, the signal driving module outputs high level, the control ends of the analog switches in the valve opening triggering unit and the valve closing triggering unit are high level, the control end of the analog switch in the second triggering unit is low level, the control circuit is in an automatic control mode, and the processor outputs a valve opening signal OPEN to the input end of the valve opening driving unit or a valve closing signal CLOSE to the input end of the valve closing driving unit, so that the function of automatically controlling the opening and closing of the electronic valve can be realized.
When the output is low level, the signal driving module outputs low level, the control ends of the analog switches in the valve opening triggering unit and the valve closing triggering unit are both low level, the control end of the analog switch in the second triggering unit is high level, at the moment, the control circuit is in a manual control mode, a key S2 is pressed, high level can be output to the input end of the valve closing driving unit, a key S3 is pressed, high level can be output to the input end of the valve opening driving unit, and the function of manually controlling the opening and closing of the electric valve can be realized.
To sum up, the utility model discloses a flow observes and controls appearance motorised valve control circuit has increased the function of manual control motorised valve all the way on the basis that current motorised valve control circuit is controlled by the flowmeter. The automatic control and the manual control are switched through the switching module, and the manual control function of the electric valve control circuit is realized by arranging the second triggering module between the signal driving module and the electric valve driving module. The utility model is simple in operation, can easily realize the automatic control of motorised valve and manual control's switching, break down when flow pipeline or motorised valve, make things convenient for the staff in time to investigate and handle. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. The utility model provides a flow observes and controls appearance motorised valve control circuit which characterized in that, control circuit includes: the device comprises a switching module, a processor, a signal driving module, a first triggering module, a second triggering module and an electric valve driving module;
the output end of the switching module is connected with the input end of a processor, the output end of the processor is connected with the input end of the signal driving module, the output end of the signal driving module is respectively connected with the input end of the first triggering module and the input end of the second triggering module, the input end of the first triggering module is further connected with the output end of the processor, the output end of the first triggering module and the output end of the second triggering module are respectively connected with the input end of the electric valve driving module, and the output end of the electric valve driving module is connected with the control end of an external electric valve.
2. The electrically operated valve control circuit of the flow measurement and control instrument according to claim 1, characterized in that: the switching module comprises a key S1, a resistor R16 and a capacitor C11;
one end of the key S1 is respectively connected with the input end of the processor, one end of the resistor R16 and one end of the capacitor C11, the other end of the key S1 is connected with the other end of the capacitor C11 and then grounded, and the other end of the resistor R16 is connected with the positive power supply V2.
3. The electrically operated valve control circuit of the flow measurement and control instrument according to claim 1, characterized in that: the signal driving module comprises an inverter U4A, a triode Q3, a capacitor C10 and a plurality of resistors;
one end of the resistor R17 is connected with the output end of the processor, the other end of the resistor R17 is connected with one end of the resistor R19 and the base electrode of the triode Q3, the collector electrode of the triode Q3 is connected with one end of the resistor R15, the input end of the inverter U4A and one end of the capacitor C10 respectively, the other end of the resistor R15 is connected with the positive power supply V2, the emitter electrode of the triode Q3, the other end of the resistor R19 and the other end of the capacitor C10 are connected and then grounded, and the output end of the inverter U4A is connected with the input end of the first trigger module and the input end of the second trigger.
4. The electrically operated valve control circuit of the flow measurement and control instrument according to claim 1, characterized in that: the first trigger module comprises a valve opening trigger unit and a valve closing trigger unit, wherein the valve opening trigger unit and the valve closing trigger unit are identical in structure.
5. The electrically operated valve control circuit of the flow measurement and control instrument according to claim 4, characterized in that: the valve closing triggering unit comprises an analog switch U3C, a resistor R18, a resistor R20, a capacitor C12, a diode D10 and a diode D9;
one end of the resistor R18 and the input end of the analog switch U3C are connected and then connected with the output end of the processor, the resistor R20 is connected with the capacitor C12 in parallel, one end of the resistor R18 and the negative end of the diode D10 are connected in parallel, the other end of the diode D10 is grounded, the positive end of the diode D10 is connected with the negative end of the diode D9, the positive end of the diode D9 is connected with the output end of the analog switch U3C, the output end of the analog switch U3C is further connected with the input end of the electric valve driving module, and the control end of the analog switch U3C is connected with the output end of the signal driving module.
6. The electrically operated valve control circuit of the flow measurement and control instrument according to claim 1, characterized in that: the second trigger module comprises an inverter U4B, an analog switch U3A, a key S2, a key S3, a light-emitting diode LE2, a light-emitting diode LE1 and a plurality of resistors;
one end of a resistor R13 is connected with the output end of the signal driving module and the input end of an inverter U4B respectively, the other end of the resistor R13 is connected with the light emitting diode LE2 in series and then grounded, the output end of the inverter U4B is connected with one end of a resistor R14 and the control end of an analog switch U3A respectively, the other end of a resistor R14 is connected with the light emitting diode LE1 in series and then grounded, the input end of the analog switch U3A is connected with one end of the resistor R5, the other end of the resistor R5 is connected with a positive power supply V2, the output end of the analog switch U3A is connected with one end of a key S2 and one end of a key S3 respectively, and the other end of the key S2 and the other end of.
7. The electrically operated valve control circuit of the flow measurement and control instrument according to claim 1, characterized in that: the electric valve driving module comprises a valve opening driving unit and a valve closing driving unit, wherein the valve opening driving unit and the valve closing driving unit have the same structure.
8. The electrically operated valve control circuit of the flow measurement and control instrument according to claim 7, characterized in that: the valve closing driving unit comprises a thyristor Q2, a relay K2, a diode D8, a resistor R7 and a resistor R12;
one end of a resistor R7 is connected with one end of a resistor R12, the connected public end is respectively connected with the output end of the first trigger module and the output end of the second trigger module, the other end of the resistor R12 is connected with the source electrode of the thyristor Q2 and then grounded, the other end of the resistor R7 is connected with the gate of the thyristor Q2, the drain of the thyristor Q2 is respectively connected with the anode of a diode D8 and the cathode of the power end of a relay K2, the cathode of the diode D8 is connected with the anode of the power end of the relay K2 and then connected with a positive power supply V1, one end of the switch end of the relay K2 is connected with an alternating current power supply, and the other end of the switch end of the relay K.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022091018.0U CN212658987U (en) | 2020-09-22 | 2020-09-22 | Electric valve control circuit of flow measurement and control instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022091018.0U CN212658987U (en) | 2020-09-22 | 2020-09-22 | Electric valve control circuit of flow measurement and control instrument |
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| CN212658987U true CN212658987U (en) | 2021-03-05 |
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