CN217301803U - Power-off reset actuator - Google Patents

Abstract

The application relates to a power-off reset actuator, which comprises: the device comprises a motor, an external power supply detection module, a flash detection module, a single chip microcomputer, a control switch and a standby power supply module. The power input end of the motor, the power input end of the single chip microcomputer and the control switch are all suitable for being electrically connected with an external power supply. The detection end of the external power supply detection module is also suitable for being electrically connected with an external power supply and used for detecting the electrifying state of the external power supply. The flash detection module is electrically connected between the output end of the external power supply detection module and the single chip microcomputer so as to time when the external power supply detection module detects the power failure of the external power supply. The single chip microcomputer is electrically connected with the motor to control the motor to keep the current state in the timing time. The single chip microcomputer, the control switch and the standby power supply are electrically connected in sequence, and the output end of the standby power supply is electrically connected to the motor and the single chip microcomputer and used for supplying power to the motor and the single chip microcomputer when an external power supply is powered off, so that the motor still corresponds to a control signal during a flash power-off period, and the valve is kept at a working position.

Description

Power-off reset actuator

Technical Field

The application relates to the technical field of actuators, in particular to a power-off reset actuator.

Background

Under many industrial conditions, due to safety requirements, an electric control valve or a device needs to be operated to a specified position (a fully closed position, a fully opened position, a position keeping position or a defined position) when power is cut off, and under a common condition, an electric actuator stops due to power loss when power is cut off, the valve cannot be operated, and a fault safety position cannot be realized. The existing electric actuator capable of realizing power-off reset is usually provided with a power-off detection module and a standby power supply module to realize the power-off reset of the electric actuator.

However, the existing electric actuator capable of realizing power-off reset cannot distinguish flash power-off and effective power-off, and the power-off reset function can be triggered when the flash power-off occurs, so that the working efficiency is very influenced.

Disclosure of Invention

In view of this, the application provides a power-off reset actuator, which can distinguish between flash power-off and effective power-off, and when the flash power-off occurs, a valve cannot be immediately driven to a preset safety position, so that frequent operation of the actuator due to the flash power-off is reduced.

According to an aspect of the present application, there is provided a power-off reset actuator including:

the device comprises a motor, an external power supply detection module, a flash detection module, a single chip microcomputer, a control switch and a standby power supply module;

the power input end of the motor, the power input end of the singlechip and the control switch are all suitable for being electrically connected with an external power supply;

the detection end of the external power supply detection module is also suitable for being electrically connected with the external power supply and used for detecting the electrifying state of the external power supply;

the flash detection module is electrically connected between the output end of the external power supply detection module and the single chip microcomputer so as to time when the external power supply detection module detects that the external power supply is powered off;

the single chip microcomputer is electrically connected with the motor so as to control the motor to keep the current state within the timing time;

the single chip microcomputer, the control switch and the standby power supply are electrically connected in sequence, and the output end of the standby power supply is electrically connected to the motor and the single chip microcomputer and used for supplying power to the motor and the single chip microcomputer when an external power supply is powered off.

In one possible implementation, the system further comprises an AC/DC conversion circuit;

the power input end of the motor, the power input end of the single chip microcomputer and the control switch are electrically connected with an external power supply through the AC/DC conversion circuit.

In a possible implementation manner, the device further comprises a voltage reduction circuit and a voltage boosting circuit;

the control switch is electrically connected with the input end of the standby power supply module through the voltage reduction circuit, and the output end of the standby power supply is electrically connected with the power supply input end of the motor and the power supply input end of the single chip microcomputer through the voltage boosting circuit.

In one possible implementation, the circuit further comprises an isolation 3V circuit;

and the output end of the AC/DC conversion circuit is electrically connected with the power input end of the singlechip through the 3V isolation circuit.

In a possible implementation mode, the system further comprises an isolated 12V circuit and a signal conversion module;

one end of the signal conversion module is electrically connected with the output end of the AC/DC conversion circuit through the isolated 12V circuit, and the other end of the signal conversion module is electrically connected with the single chip microcomputer.

In one possible implementation, the backup power module is a super capacitor.

In a possible implementation manner, the number of the super capacitors is multiple, and the super capacitors are arranged in series.

In a possible implementation manner, the capacitor installation plate is further included;

and the plurality of super capacitors are all arranged on the capacitor mounting plate.

In one possible implementation, the capacitor mounting plate is semicircular, and the super capacitors are arranged along an arc of the semicircle.

In a possible implementation manner, the capacitor mounting plate is provided with a mounting hole.

This application is applicable to electric actuator when taking place the outage, continue to make motor work, drive the valve, external power source detection module is applicable to and detects whether take place the outage, the flash detection module is applicable to and judges that the outage is ignorable flash, or effective outage, the power outage is in the twinkling of an eye, just start the clock immediately, accumulative total outage duration, can define the flash time between 0 ~ 6 seconds, with confirm whether effective outage, when the outage takes place, stand-by power supply module starts immediately, supply power to motor and singlechip, in the flash time, the motor still responds control signal, make the valve position be located operating position, after flash detection module judges that the outage is effective outage, singlechip control motor drives the valve and moves the fail safe position (totally closed, open fully, protect the position or the position of definition). When the power is re-supplied, the external power supply charges the standby power supply module, and the standby power supply module is in a waiting state after being fully charged until the standby power supply module is started after power failure is identified. Compare in traditional outage and reach the working method that drives the valve and move to the fail-safe position promptly, this application can be effectual avoid when the flash interruption takes place, frequently operates the executor, has improved work efficiency.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

FIG. 1 illustrates a schematic diagram of a power-off reset actuator according to an embodiment of the present application;

fig. 2 shows a main body structure diagram of a mounting board and a super capacitor according to an embodiment of the present application.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention or for simplicity in description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

FIG. 1 illustrates a schematic diagram of a power-off reset actuator according to an embodiment of the present application; fig. 2 shows a main body structure diagram of a mounting board and a super capacitor according to an embodiment of the present application. As shown in fig. 1, the power-off reset actuator includes: the device comprises a motor 600, an external power supply detection module 210, a flash detection module 220, a single chip microcomputer 300, a control switch 400 and a standby power supply module 520. The power input terminal of the motor 600, the power input terminal of the single chip microcomputer 300, and the control switch 400 are all adapted to be electrically connected to an external power source. The detection end of the external power detection module 210 is also adapted to be electrically connected to an external power source for detecting the power-on state of the external power source. The flash detection module 220 is electrically connected between the output end of the external power detection module 210 and the single chip microcomputer 300, so as to time when the external power detection module 210 detects the external power outage. The single chip microcomputer 300 is electrically connected with the motor 600 to control the motor 600 to maintain the current state during the timing time. The single chip microcomputer 300, the control switch 400 and the standby power supply are electrically connected in sequence, and the output end of the standby power supply is electrically connected to the motor 600 and the single chip microcomputer 300 and used for supplying power to the motor 600 and the single chip microcomputer 300 when the external power supply is powered off.

The utility model is suitable for when the electricity executor takes place the outage, continue to make motor 600 work, drive the valve, external power source detection module 210 is applicable to and detects whether the outage takes place, flash detection module 220 is applicable to and judges whether the outage is negligible flash, or effectively the outage, the power outage is in the twinkling of an eye, just start the clock immediately, the accumulative power outage duration, can define the flash off time between 0 ~ 6 seconds, whether confirm effectively the outage, when the outage takes place, control switch 400 breaks off, stand-by power supply module 520 immediately starts, power is supplied to motor 600 and singlechip 300, in the flash off time, make motor 600 still respond to control signal, the valve position is located the operating position, singlechip control switch 400 remains the off-state throughout, after flash detection module 220 judges the outage is effectively the outage, singlechip 300 controls motor 600 to drive the valve to move to the fail safe position (totally closed, the valve is opened to the safe position, Fully open, held or defined position). When a call is received again, the control switch is closed 400, the external power supply is in a waiting state after being fully charged by charging the standby power supply module 520, and the external power supply is started until power loss is identified. Compare in traditional outage and reach the working method that drives the valve and move to the fail-safe position promptly, this application can be effectual avoid when the flash interruption takes place, frequently operates the executor, has improved work efficiency.

Here, it should be noted that the control switch 400 is a relay, so that the overall structure is relatively simple, and the production cost is effectively reduced.

In one possible implementation, an AC/DC conversion circuit 100 is also included. The power input terminal of the motor 600, the power input terminal of the single chip microcomputer 300, and the control switch 400 are electrically connected to an external power source through the AC/DC conversion circuit 100. By providing the AC/DC conversion circuit 100, the AC power of the external power source is converted into DC power for use in the present application.

In one possible implementation, a voltage step-down circuit 510 and a voltage step-up circuit 530 are also included. The control switch 400 is electrically connected to the input terminal of the standby power module 520 through the voltage step-down circuit 510, and the output terminal of the standby power is electrically connected to the power input terminal of the motor 600 and the power input terminal of the single chip microcomputer 300 through the voltage step-up circuit 530. The external power supply makes the current reach the charging standard of the standby power supply module 520 through the AC/DC conversion circuit 100 and the voltage reduction circuit 510, and when the power failure occurs, the standby power supply module 520 continuously and stably supplies power to the motor 600, the single chip microcomputer 300, the display and other auxiliary circuits through the boost circuit 530, so that the valve can continue to operate under the power failure condition.

In one possible implementation, an isolated 3V circuit 700 is also included. The output end of the AC/DC conversion circuit 100 is electrically connected to the power input end of the single chip microcomputer 300 through a 3V isolation circuit. The single chip microcomputer 300 is adapted to receive and transmit control signals, control the motor 600 and the standby power module 520, and enable an external power supply to reach a supply voltage for the single chip microcomputer 300 to work through the AC/DC conversion circuit 100 and the 3V isolation circuit by providing the isolation 3V circuit 700.

In one possible implementation, an isolated 12V circuit 810 and a signal conversion module 800 are also included. One end of the signal conversion module 800 is electrically connected with the output end of the AC/DC conversion circuit 100 through the isolated 12V circuit 810, and the other end of the signal conversion module 800 is electrically connected with the single chip microcomputer 300. The single chip microcomputer 300 can read input signals and then operate according to commands corresponding to the signals, the signals have multiple modes such as 4-20 mA, 0-10V and the like, in the operation process, the current opening degree can be output in proportion and in the mode of the signals, and signal transmission between the single chip microcomputer 300 and an upper computer is achieved by arranging the signal conversion module 800.

In one possible implementation, the backup power module 520 is a super capacitor 522. The super capacitor 522 realizes energy conversion without depending on chemical reaction, so that the charging rate is faster, the internal resistance is smaller, the number of circulations is larger, the influence of temperature is small, and the safety is higher.

In one possible implementation, the super capacitor 522 is plural, and the super capacitors 522 are arranged in series. By arranging a plurality of super capacitors 522, the valve can continuously run for at least 1.5 strokes under the condition of power failure, and the specified valve position is ensured to be reached.

In one possible implementation, as shown in fig. 2, a capacitor mounting plate 521 is further included. A plurality of supercapacitors 522 are each disposed on the capacitor mounting plate 521. Overall structure is comparatively simple, the effectual manufacturing cost that has reduced.

In one possible implementation, the capacitor mounting plate 521 has a semicircular shape, and the super capacitors 522 are arranged along an arc of the semicircular shape. The electric actuator is arranged according to the condition of the internal installation cavity of the electric actuator, so that the space is reasonably utilized.

Here, it should be noted that, in another possible implementation manner, two mounting plates 521 are provided, and the two mounting plates 521 are arranged oppositely to form a circular structure, so that the overall structure is simpler, and the production cost is effectively reduced.

In one possible implementation, the capacitor mounting plate 521 is provided with a mounting hole. The mounting plate 521 can be mounted on the adapted electric actuator by providing the mounting hole.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. A power-off reset actuator, comprising:

the device comprises a motor, an external power supply detection module, a flash detection module, a single chip microcomputer, a control switch and a standby power supply module;

the power input end of the motor, the power input end of the singlechip and the control switch are all suitable for being electrically connected with an external power supply;

the detection end of the external power supply detection module is also suitable for being electrically connected with the external power supply and used for detecting the electrifying state of the external power supply;

the flash detection module is electrically connected between the output end of the external power supply detection module and the single chip microcomputer so as to time when the external power supply detection module detects that the external power supply is powered off;

the single chip microcomputer is electrically connected with the motor so as to control the motor to keep the current state within the timing time;

the single chip microcomputer, the control switch and the standby power supply are electrically connected in sequence, and the output end of the standby power supply is electrically connected to the motor and the single chip microcomputer and used for supplying power to the motor and the single chip microcomputer when an external power supply is powered off.

2. The power-off reset actuator of claim 1, further comprising an AC/DC conversion circuit;

the power input end of the motor, the power input end of the single chip microcomputer and the control switch are electrically connected with an external power supply through the AC/DC conversion circuit.

3. The power-off reset actuator according to claim 2, further comprising a voltage-reducing circuit and a voltage-boosting circuit;

the control switch is electrically connected with the input end of the standby power supply module through the voltage reduction circuit, and the output end of the standby power supply is electrically connected with the power supply input end of the motor and the power supply input end of the single chip microcomputer through the voltage boosting circuit.

4. The power-off reset actuator of claim 2, further comprising an isolated 3V circuit;

and the output end of the AC/DC conversion circuit is electrically connected with the power input end of the singlechip through the 3V isolation circuit.

5. The power-off reset actuator according to claim 2, further comprising an isolated 12V circuit and a signal conversion module;

one end of the signal conversion module is electrically connected with the output end of the AC/DC conversion circuit through the isolated 12V circuit, and the other end of the signal conversion module is electrically connected with the single chip microcomputer.

6. The power-off reset actuator of claim 1, wherein the backup power module is a super capacitor.

7. The power-off reset actuator according to claim 6, wherein the plurality of super capacitors are arranged in series.

8. The power-off reset actuator of claim 7, further comprising a capacitive mounting plate;

and the plurality of super capacitors are all arranged on the capacitor mounting plate.

9. The power-off reset actuator of claim 8, wherein the capacitor mounting plate is semi-circular and the super capacitor is arranged along an arc of the semi-circle.

10. The power-off reset actuator according to claim 9, wherein the capacitor mounting plate is provided with a mounting hole.

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