阅读说明：本技术 可逆型控制与保护开关电器及其可逆控制方法 (Reversible control and protection switching device and reversible control method thereof ) 是由 白大好 于 2019-02-16 设计创作，主要内容包括：本发明涉及一种可逆型控制与保护开关电器及其可逆控制方法,其包括控制与保护开关电器本体和可逆模块,可逆模块内部设置有可逆电磁铁,本发明通过控制与保护开关电器本体的控制模块对可逆模块进行控制以实现可逆模块的换向,本发明的可逆型控制与保护开关电器电路结构简单,控制可靠性高,操作简便,解决了现有的可逆性控制与保护开关电器故障率高,操作繁琐,易出错等问题。(The invention relates to a reversible control and protection switch electric appliance and a reversible control method thereof, wherein the reversible control and protection switch electric appliance comprises a control and protection switch electric appliance body and a reversible module, a reversible electromagnet is arranged in the reversible module, and the reversible module is controlled by the control module of the control and protection switch electric appliance body to realize the reversing of the reversible module.)

1. A reversible control and protection switch electric appliance is characterized in that: the control and protection switch electric appliance comprises a control and protection switch electric appliance body and a reversible module, wherein a reversible electromagnet is arranged in the reversible module, a forward wiring terminal of a reversible coil of the reversible electromagnet is connected with a forward power supply output terminal of the control and protection switch electric appliance, a reverse wiring terminal of the reversible coil is connected with a reverse power supply output terminal of the control and protection switch electric appliance, a common end of the reversible coil is connected with a power supply negative wiring terminal of the control and protection switch electric appliance and is connected with a power supply negative electrode, a power supply positive wiring terminal of the reversible module is connected with a power supply positive wiring terminal of the control and protection switch electric appliance body and is connected with a power supply positive electrode through a main switch, a control signal end of the reversible module is connected with a control signal power supply end of the control and protection switch electric appliance, and a control signal end of the reversible module is, the control signal end of the reversible module is connected with the reverse control signal input end of the control and protection switch electrical appliance through the reverse control switch, the control signal end of the reversible module is connected with the input end of the stop control signal of the control and protection switch electrical appliance through the stop control switch, the control and protection switch electric appliance is internally provided with a detection module for detecting the forward and reverse directions of the reversible module and a reversing module for controlling the reversing of the reversible module, the detection module judges the forward and reverse directions of the reversible coil by detecting whether the feedback end of the reversible coil is conducted with a control signal power end, and the reversing module controls the reversing of the reversible coil by controlling the forward power output end and the reverse power output end.

2. The reversible control and protection switching device according to claim 1, characterized in that: and the control module of the control and protection switching device is also internally provided with a time delay control module for controlling the reversing time delay of the reversible module and the attraction time delay of the body electromagnet.

3. A reversible control method for controlling and protecting a switching device is characterized by comprising the following steps:

(1) starting the control and protection switch electric appliance, judging whether a shutdown switch is closed or not by a control module of the control and protection switch electric appliance, and if the shutdown switch is disconnected, sending a signal to a body electromagnet by the control module of the control and protection switch electric appliance to disconnect the body electromagnet, and stopping the motor; if the shutdown switch is closed, performing the step (2);

(2) a control module of the control and protection switch electric appliance judges which switch of the forward rotation switch and the reverse rotation switch is closed, if the forward rotation switch is closed, the step (3) is carried out, and if the reverse rotation switch is closed, the step (4) is operated;

(3) the control module of the control and protection switching device judges whether the electromagnet of the reversible module is in forward conduction or reverse conduction, if the electromagnet is in forward conduction, the control module does not send a control signal, and the motor normally rotates in forward direction; if the reversible module is in reverse conduction, the control module of the control and protection switch electric appliance sends a control signal to disconnect the electromagnet of the control and protection switch electric appliance body, then the control module sends the control signal to change the reversible module into forward conduction, and then sends the control signal to close the electromagnet of the body, so that the motor operates in the forward direction;

(4) the control module of the control and protection switching device judges whether the electromagnet of the reversible module is in forward conduction or reverse conduction, if the electromagnet of the reversible module is in reverse conduction, the control module does not send a control signal, and the motor normally rotates in reverse direction; if the reversible module is in forward conduction, the control module of the control and protection switch electric appliance sends a control signal to disconnect the electromagnet of the control and protection switch electric appliance body, then the control module sends the control signal to convert the reversible module into reverse conduction, then the control signal is sent to close the electromagnet of the body, and the motor runs in reverse.

4. The reversible control method of a control and protection switching device according to claim 3, characterized in that: the control module of the control and protection switching device judges whether the electromagnet of the reversible module is in forward conduction or reverse conduction by judging whether the feedback signal input end is conducted with the control signal power supply end, if the feedback signal input end is not conducted with the control signal power supply end, the reversible module is in forward conduction, and if the feedback signal input end is conducted with the control signal power supply end, the reversible module is in reverse conduction.

5. The reversible control method of a control and protection switching device according to claim 3, characterized in that: the control module of the control and protection switching device controls the forward conduction or reverse conduction of the electromagnet of the reversible module through controlling the conduction of the power source positive terminal of the reversible module and the forward power source output end or the reverse power source output end, if the power source positive terminal of the reversible module is conducted with the forward power source output end, the electromagnet forward coil of the reversible module is conducted, the iron core is attracted to the forward direction by magnetic force, the electromagnet forward conduction is conducted, if the power source positive terminal of the reversible module is conducted with the reverse power source output end, the electromagnet reverse coil of the reversible module is conducted, the iron core is attracted to the reverse direction by the magnetic force, and the electromagnet is conducted in the reverse direction.

6. The reversible control method of a control and protection switching device according to claim 3, characterized in that: in the step (3), if the reversible module is in reverse conduction, the control module of the control and protection switch electric appliance sends a control signal to delay for a certain time after the body electromagnet is disconnected, then sends a signal to reverse the reversible module to be in forward conduction, and then delays for a period of time to send a signal to close the body electromagnet.

7. The reversible control method of a control and protection switching device according to claim 3, characterized in that: in the step (4), if the reversible module is in forward conduction, the control module of the control and protection switch electric appliance sends a control signal to delay for a certain time after the body electromagnet is disconnected, then sends a signal to reverse the reversible module to reverse conduction, and then delays for a period of time to send a signal to close the body electromagnet.

8. The reversible control method of a control and protection switching device according to any one of claims 3 to 7, characterized in that: in the steps (3) and (4), after the reversing of the reversible module is finished, the control module of the electrical appliance body of the control and protection switch sends a signal, so that the reversible coil is disconnected with the power supply positive terminal of the reversible module, and the reversible coil is prevented from being burnt out due to heating after being powered on all the time.

Technical Field

The invention relates to the field of electrical switches, in particular to a reversible control and protection switch electrical appliance and a reversible control method thereof.

Background

The reversible control and protection switching device is characterized in that a reversible module is connected to the control and protection switching device to realize the forward and reverse rotation of a motor, as shown in fig. 1, the reversible control and protection switching device is a circuit schematic diagram of the original reversible control and protection switching device, and the control principle is as follows: pressing a K1 button, connecting the two ends of a reversible coil of a reversible electromagnet of a reversible module with A1 and A2, generating a magnetic field by the coil, absorbing an iron core to the positive direction by the magnetic field force, connecting A3 and A4 of a control and protection switch electric appliance body, absorbing the body electromagnet, connecting a main loop to the positive direction, simultaneously connecting 13 and 14, disconnecting 11 and 12, connecting 13 and 14 to enable A3 and A4 to be always in a connected state, and always connecting the body electromagnet to be in an absorbed state; 11,12 are disconnected, the reversible coil loses power, and the coil is prevented from being powered on all the time to generate heat. When the motor is reversely rotated, the K3, A3 and A4 are pressed to lose power, the body electromagnet is switched off, the 11 and 12 attract each other, and the 13 and 14 are switched off. When the button K2 is pressed, the reverse coil is energized, the iron core is attracted to the reverse direction, A3 and A4 are switched on, the body electromagnet is attracted, the main loop is switched on in the reverse direction, and simultaneously 13 and 14 are switched on, and 11 and 12 are switched off. In the control mode, when reversing is needed (for example, the reversing is changed from the forward rotation to the reverse rotation), the stop switch K3 is required to be pressed down firstly, so that the body electromagnet of the control and protection switching device is disconnected firstly, and then the reverse rotation control switch K2 is pressed down, and in the process, a plurality of groups of contacts are required to be switched, including Sk: converting Az into Af; and Ss: converting Az into Af; sb: the conversion of Bz to Bf, the control and protection switch electrical apparatus body 11 and 12,13 and 14, and 5 groups of contacts are all completed in an instant manner theoretically, however, because the number of contacts is large, any group of contacts is not good in conversion, the motor steering can fail, the reversible control mode has high failure rate, and the operation is complicated, so the existing reversible control and protection switch electrical apparatus needs to be improved.

Disclosure of Invention

The invention aims to provide a reversible control and protection switching device which can solve the problems of high failure rate, complex operation and easy error of the reversible control and protection switching device in the background technology.

The technical scheme for realizing the aim of the invention is as follows:

a reversible control and protection switch electric appliance comprises a control and protection switch electric appliance body and a reversible module, wherein a reversible electromagnet is arranged in the reversible module, a forward wiring terminal of a reversible coil of the reversible electromagnet is connected with a forward power supply output terminal of the control and protection switch electric appliance, a reverse wiring terminal of the reversible coil is connected with a reverse power supply output terminal of the control and protection switch electric appliance, a common end of the reversible coil is connected with a power supply negative wiring terminal of the control and protection switch electric appliance and is connected with a power supply negative electrode, a power supply positive wiring terminal of the reversible module is connected with a power supply positive wiring terminal of the control and protection switch electric appliance body and is connected with a power supply positive electrode through a main switch, a control signal end of the reversible module is connected with a control signal power end of the control and protection switch electric appliance, and a control signal end of the reversible module is connected with a forward control signal input end of the, the control signal end of the reversible module is connected with the reverse control signal input end of the control and protection switch electrical appliance through the reverse control switch, the control signal end of the reversible module is connected with the input end of the stop control signal of the control and protection switch electrical appliance through the stop control switch, the control and protection switch electric appliance is internally provided with a detection module for detecting the forward and reverse directions of the reversible module and a reversing module for controlling the reversing of the reversible module, the detection module judges the forward and reverse directions of the reversible coil by detecting whether the feedback end of the reversible coil is conducted with a control signal power end, and the reversing module controls the reversing of the reversible coil by controlling the forward power output end and the reverse power output end.

In order to make the actions of the disconnection of the body electromagnet, the reversing of the reversible module and the attraction of the body electromagnet be carried out according to the sequence, in the scheme, the control module of the control and protection switching device is also provided with a time delay control module for controlling the reversing time delay of the reversible module and the attraction time delay of the body electromagnet.

The second purpose of the invention is to provide a reversible control method for controlling and protecting a switching device, which comprises the following steps:

(1) starting the control and protection switch electric appliance, judging whether a shutdown switch is closed or not by a control module of the control and protection switch electric appliance, and if the shutdown switch is disconnected, sending a signal to a body electromagnet by the control module of the control and protection switch electric appliance to disconnect the body electromagnet, and stopping the motor; if the shutdown switch is closed, performing the step (2);

(2) a control module of the control and protection switch electric appliance judges which switch of the forward rotation switch and the reverse rotation switch is closed, if the forward rotation switch is closed, the step (3) is carried out, and if the reverse rotation switch is closed, the step (4) is operated;

(3) the control module of the control and protection switching device judges whether the electromagnet of the reversible module is in forward conduction or reverse conduction, if the electromagnet is in forward conduction, the control module does not send a control signal, and the motor normally rotates in forward direction; if the reversible module is in reverse conduction, the control module of the control and protection switch electric appliance sends a control signal to disconnect the electromagnet of the control and protection switch electric appliance body, then the control module sends the control signal to change the reversible module into forward conduction, and then sends the control signal to close the electromagnet of the body, so that the motor operates in the forward direction;

(4) the control module of the control and protection switching device judges whether the electromagnet of the reversible module is in forward conduction or reverse conduction, if the electromagnet of the reversible module is in reverse conduction, the control module does not send a control signal, and the motor normally rotates in reverse direction; if the reversible module is in forward conduction, the control module of the control and protection switch electric appliance sends a control signal to disconnect the electromagnet of the control and protection switch electric appliance body, then the control module sends the control signal to convert the reversible module into reverse conduction, then the control signal is sent to close the electromagnet of the body, and the motor runs in reverse.

In the above scheme, the control module of the control and protection switching device judges whether the electromagnet of the reversible module is in forward conduction or reverse conduction by judging whether the feedback signal input end is conducted with the control signal power supply end, if the feedback signal input end is conducted with the control signal power supply end, the reversible module is in forward conduction, and if the feedback signal input end is not conducted with the control signal power supply end, the reversible module is in reverse conduction.

In the above scheme, the control module of the control and protection switching device judges whether the electromagnet of the reversible module is in forward conduction or reverse conduction by judging whether the feedback signal input end is conducted with the control signal power supply end, if the feedback signal input end is not conducted with the control signal power supply end, the reversible module is in forward conduction, and if the feedback signal input end is conducted with the control signal power supply end, the reversible module is in reverse conduction.

In the steps (3) and (4) of the scheme, after the reversing of the reversible module is finished, the control module of the electrical appliance body of the control and protection switch sends a signal, so that the reversible coil is disconnected from the positive terminal of the power supply, and the reversible coil is prevented from being burnt out due to heat generated by electricity.

In the scheme, in order to make the actions of the disconnection of the body electromagnet, the reversing of the reversible module and the attraction of the body electromagnet be carried out according to the sequence, in the step (3), if the reversible module is in reverse conduction, the control module of the control and protection switching device sends a control signal to delay for a certain time after the body electromagnet is disconnected, then sends a signal to make the reversible module be in forward conduction in a reversing way, and then delays for a certain time to send a signal to make the body electromagnet be closed; in the step (4), if the reversible module is in forward conduction, the control module of the control and protection switch electric appliance sends a control signal to delay for a certain time after the body electromagnet is disconnected, then sends a signal to reverse the reversible module to reverse conduction, and then delays for a certain time to send a signal to close the body electromagnet.

The reversible control and protection switch electric appliance has the advantages that: the reversible control and protection switching device adopts the function of the control module of the control and protection switching device to control the reversing of the reversible module and the closing and opening operations of the body electromagnet, compared with the traditional contact control mode, the control accuracy is higher, and the time delay of sending a control signal can be set when the reversible module reverses, so that the operations of opening the body electromagnet, reversing the reversible module and closing the body electromagnet are carried out in sequence, thereby avoiding the occurrence of errors in the reversible module, better protecting the motor and preventing the motor from being burnt out. Compared with the prior reversible control and protection switch electric appliance, the reversible control and protection switch electric appliance has the advantages that the circuit structure is simplified, the operation is simpler and more convenient, when the motor is changed into the reverse rotation state from the forward rotation state or the reverse rotation state from the reverse rotation state, only the reverse rotation switch needs to be closed, the body electromagnet does not need to be manually disconnected, the reversing process is completely realized by the control module of the control and protection switch electric appliance, the operation is simple and convenient, the error occurrence is greatly reduced, and the better protection effect is realized on the motor.

Drawings

FIG. 1 is a schematic circuit diagram of a prior reversible control and protection switching device;

FIG. 2 is a schematic circuit diagram of the reversible control and protection switching device of the present invention;

FIG. 3 is a schematic circuit diagram of a reversible module;

FIG. 4 is a control flow chart of the reversible control and protection switch apparatus of the present invention;

in the figure, 1 is the control and protection switch electrical appliance body, 2 is the reversible module, 3 is the reversible coil, K is the master switch, K1 is the forward rotation control switch, K2 is the reverse rotation control switch, K3 is the shutdown control switch.

Detailed Description

Referring to fig. 2, a reversible control and protection switch electric appliance comprises a control and protection switch electric appliance body 1 and a reversible module 2, wherein a reversible electromagnet is arranged inside the reversible module 2, a forward terminal Az of a reversible coil 3 of the reversible electromagnet is connected with a forward power output end 24 of the control and protection switch electric appliance, a reverse terminal Af of the reversible coil 3 is connected with a reverse power output end 34 of the control and protection switch electric appliance, a common terminal a2 of the reversible coil 3 is connected with a power negative terminal of the control and protection switch electric appliance and is connected with a power negative terminal of the power, a power positive terminal a1 of the reversible module 2 is connected with a power positive terminal of the control and protection switch electric appliance body 1 and is connected with a power positive terminal through a main switch K, a control signal terminal 81 of the reversible module 2 is connected with a control signal power terminal of the control and protection switch electric appliance, the control signal end 81 of the reversible module 2 is connected with the forward rotation control signal input end DI1 of the control and protection switch electric appliance through a forward rotation control switch K1, the control signal end 81 of the reversible module 2 is connected with the reverse rotation control signal input end DI2 of the control and protection switch electric appliance through a reverse rotation control switch K2, the control signal end 81 of the reversible module 2 is connected with the stop control signal input end DI3 of the control and protection switch electric appliance through a stop control switch K3, the reversible coil 3 state feedback end 84 of the reversible module 2 is connected with the feedback signal input end DI4 of the control and protection switch electric appliance, the two ends A3 of the body electromagnet coil of the control and protection switch electric appliance are connected with A4, a detection module for detecting the forward and reverse directions of the reversible module 2 and a reversing module for controlling the reversing of the reversible module 2 are arranged in the control module of the control and protection switch electric appliance, and the detection module judges whether the reversible coil 3 state feedback end 84 is connected with the control signal Forward and reverse states, the commutation module controls the commutation of the reversible coil 3 by controlling the forward power output 24 and the reverse power output 34.

In the above scheme, in order to make the actions of the disconnection of the body electromagnet, the reversing of the reversible module 2 and the attraction of the body electromagnet be performed in sequence, the control module of the control and protection switching device is also provided with a delay control module for controlling the reversing delay of the reversible module 2 and the attraction delay of the body electromagnet.

A reversible control method for controlling and protecting a switching device comprises the following steps:

(1) starting the control and protection switch electric appliance, judging whether a shutdown switch K3 is closed by a control module of the control and protection switch electric appliance, and if the shutdown switch K3 is disconnected, sending a signal to the body electromagnet by the control module of the control and protection switch electric appliance to disconnect the body electromagnet, and stopping the motor; if the shutdown switch K3 is closed, performing the step (2);

(2) the control module of the control and protection switching device judges which switch of the forward switch K1 and the reverse switch K2 is closed, if the forward switch K1 is closed, the step (3) is carried out, and if the reverse switch K2 is closed, the step (4) is operated;

(3) the control module of the control and protection switching device judges whether the electromagnet of the reversible module 2 is in forward conduction or reverse conduction, if the electromagnet is in forward conduction, the control module does not send a control signal, and the motor normally rotates in forward direction; if the reversible module 2 is in reverse conduction, the control module of the control and protection switch electric appliance sends a control signal to disconnect the electromagnet of the control and protection switch electric appliance body 1, then the control module sends the control signal to change the reversible module 2 into forward conduction, and then sends the control signal to close the electromagnet of the body, so that the motor operates in the forward direction;

(4) the control module of the control and protection switching device judges whether the electromagnet of the reversible module 2 is in forward conduction or reverse conduction, if the electromagnet is in reverse conduction, the control module does not send a control signal, and the motor normally rotates in reverse direction; if the reversible module 2 is in forward conduction, the control module of the control and protection switch electric appliance sends a control signal to disconnect the electromagnet of the control and protection switch electric appliance body 1, then the control module sends the control signal to change the reversible module 2 into reverse conduction, then the control signal is sent to close the electromagnet of the body, and the motor runs in reverse.

In the above scheme, the control module of the control and protection switching device determines whether the electromagnet of the reversible module 2 is in forward conduction or reverse conduction by determining whether the feedback signal input terminal 84 is conducted with the control signal power supply terminal 81, as shown in the circuit diagram of the feedback module in fig. 3, if the feedback signal input terminal 84 is conducted with the control signal power supply terminal 81, it indicates that the reversible module 2 is in reverse conduction, and if the feedback signal input terminal 84 is not conducted with the control signal power supply terminal 81, it indicates that the reversible module 2 is in forward conduction. The determination may be performed by determining the voltage or resistance of the feedback signal input terminal 84 and the control signal power terminal 81.

In the above-mentioned scheme, the control module of control and protection switch electrical apparatus switches on or reverse switches on through the forward of control power supply positive terminal and corotation power output or reversal power output end switching on control reversible module 2, if power supply positive terminal switches on with corotation power output, then reversible module 2's electro-magnet forward coil switches on, magnetic field force attracts unshakable in one's determination forward, electro-magnet forward switches on, if power supply positive terminal switches on with reversal power output, then reversible module 2's electro-magnet reverse coil switches on, magnetic field force attracts unshakable in one's determination the reversal, electro-magnet reverse switch on.

In steps (3) and (4) of the above scheme, after the reversing of the reversible module 2 is finished, the control module of the control and protection switch electric appliance body 1 sends a signal, so that the reversible coil 3 is disconnected from the positive terminal of the power supply, and the reversible coil 3 is prevented from being burnt out due to heat generated by power being continuously supplied.

In the scheme, in order to sequentially perform the actions of disconnecting the body electromagnet, reversing the reversible module 2 and attracting the body electromagnet, in the step (3), if the reversible module 2 is in reverse conduction, the control module of the control and protection switching device sends a control signal to delay for a certain time after the body electromagnet is disconnected, then sends a signal to reverse the reversible module 2 to be in forward conduction, and then delays for a certain time to send a signal to close the body electromagnet; in the step (4), if the reversible module 2 is in forward conduction, the control module of the control and protection switch electric appliance sends a control signal to delay a certain time after the body electromagnet is disconnected, then sends a signal to reverse the reversible module 2 to reverse conduction, and then delays a time to send a signal to close the body electromagnet.

The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.