CN210156281U

CN210156281U - Electromagnetic control device

Info

Publication number: CN210156281U
Application number: CN201920725483.XU
Authority: CN
Inventors: 刘炜; 张伟华; 梁可锐
Original assignee: ZHUHAI GEP (JINDIAN) POWER SUPPLIES CO Ltd
Current assignee: ZHUHAI GEP (JINDIAN) POWER SUPPLIES CO Ltd
Priority date: 2018-08-21
Filing date: 2019-05-20
Publication date: 2020-03-17
Anticipated expiration: 2029-05-20

Abstract

The utility model discloses an electromagnetic control device, which is respectively connected with a power input, an opening/closing switch, an electromagnetic coil and an auxiliary interlock during working, and comprises a controller, a power circuit, a capacitor C1, a closing circuit and a holding circuit; the power supply circuit is respectively connected with the power supply input, the capacitor C1, the closing circuit and the controller; the controller is respectively connected with the opening/closing switch, the capacitor C1, the closing circuit and the holding circuit; the capacitor C1 is connected to the closing circuit, and the closing circuit is connected to the holding circuit and the electromagnetic coil. The utility model has the advantages of being simple in structure and convenient in operation, replace pneumatic control mode through adopting the electromagnetic drive mode to drive and treat the closure and the disconnection of accuse switch, be the electromagnetic type controlling means that the degree of reliability is higher, the operation is maintained simply, can satisfy reliable work under adverse circumstances.

Description

Electromagnetic control device

Technical Field

The utility model relates to an electrical control technical field, especially an electromagnetic type controlling means.

Background

The vacuum circuit breaker is an important part on a railway locomotive, controls the on and off of a main circuit of the locomotive, is usually arranged in a main power supply main circuit on the locomotive to control a main power supply of the whole locomotive, and quickly cuts off the power supply when the locomotive circuit is short-circuited or has other serious faults, thereby playing a role in protecting the locomotive. Meanwhile, a driver controls the action of the vacuum circuit breaker by operating a control device of the vacuum circuit breaker to realize the on-off of the locomotive power supply. The existing control mode of the vacuum circuit breaker in the locomotive generally adopts a compressed air driving mode of a pneumatic type vacuum circuit breaker, the pneumatic mode has higher requirements on structural layout, operation maintenance and the like, the failure rate of pneumatic elements is also higher, and the reliable operation of the locomotive is greatly influenced. The utility model discloses be promptly to the improvement of pneumatic control mode, adopt the electromagnetic drive mode, utilize electromagnetic drive vacuum circuit breaker to accomplish the combined floodgate operation and keep at combined floodgate state, solved above-mentioned pneumatic type vacuum circuit breaker operation maintenance difficulty and the not high problem of reliability.

Disclosure of Invention

In order to solve the technical problem, the utility model provides an electromagnetic type controlling means that reliability is higher, operation maintenance is simple, can satisfy reliable work under adverse circumstances.

The utility model provides a technical scheme that its technical problem adopted is: an electromagnetic control device is connected with a power input, an opening/closing switch, an electromagnetic coil and an auxiliary interlock respectively during working, and comprises a controller, a power circuit, a capacitor C1, a closing circuit and a holding circuit; the power supply circuit is respectively connected with the power supply input, the capacitor C1, the closing circuit and the controller; the controller is respectively connected with the opening/closing switch, the capacitor C1, the closing circuit and the holding circuit; the capacitor C1 is connected to the closing circuit, and the closing circuit is connected to the holding circuit and the electromagnetic coil.

Further, a counter is included, which is in communication with a controller or capacitor C1.

Further, the intelligent control system also comprises a state indicating circuit, wherein the state indicating circuit is connected with the controller.

Further, the switching-on circuit adopts a transistor or a relay as a switching element.

Further, the holding circuit includes a resistor R connected in series between the solenoid and the controller.

And the electromagnetic coil controls the vacuum switch of the vacuum circuit breaker to be switched on or switched off by controlling the quick release spring mechanism through magnetic force.

The utility model has the advantages that: the electromagnetic control device has the advantages of simple structure and convenient operation, and is an electromagnetic control device which has higher reliability, simple operation and maintenance and can reliably work in severe environment by adopting an electromagnetic driving mode to replace a pneumatic control mode to drive the switch to be controlled to be switched on and off.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic block diagram of the circuit architecture of a preferred embodiment of the present invention;

fig. 2 is a schematic diagram of the circuit hardware connection of a preferred embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the conception, specific structure and technical effects of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor are within the scope of the present invention.

Referring to fig. 1, in a preferred embodiment, an electromagnetic control device, to which a power input, an opening/closing switch, a solenoid coil, and an auxiliary interlock are operatively connected, includes a controller 1, a power circuit 2, a capacitor C1, a closing circuit 3, and a holding circuit 4; the power circuit 2 is respectively connected with a power input, a capacitor C1, a closing circuit 3 and the controller 1; the controller 1 is respectively connected with the opening/closing switch, the capacitor C1, the closing circuit 3 and the holding circuit 4; the capacitor C1 is connected to the closing circuit 3, and the closing circuit 3 is connected to the holding circuit 4 and the electromagnetic coil.

Preferably, a counter 6 is also included, the counter 6 being in communication with the controller 1 or the capacitor C1. When the counter 6 is connected with the capacitor, the capacitor discharges once, and the counter 6 counts once; when the counter 6 is connected with the controller 1, when the controller 1 sends a high level to the closing circuit 3 each time and drives the closing circuit 3 to communicate with the capacitor and the electromagnetic coil, the controller 1 sends a signal to the counter 6 at the same time, so that the counter 6 counts once; namely, the counter 6 is mainly used for recording the working times of the closing circuit 3 so as to facilitate the recording and inquiring of the working personnel.

Preferably, a status indicating circuit 7 is further included, and the status indicating circuit 7 is connected with the controller 1. The state indicating circuit 7 comprises two diodes, the two diodes are respectively connected with the controller 1, one diode is used as an alarm lamp, when abnormality occurs, the controller 1 can send a control signal to the alarm lamp to enable the alarm lamp to be on, and therefore workers are reminded; the other diode tube is used as an operation lamp, when the controller 1 receives a switching-on signal of the switching-off/switching-on switch, the operation lamp is normally on, and until the controller 1 receives the switching-off signal of the switching-off/switching-on switch, the controller 1 stops sending a signal to the operation lamp, so that the operation lamp is not powered on and stops working.

Referring to fig. 2, in a preferred embodiment, the closing circuit 3 preferably uses a transistor or a relay as a switching element. In combination with the element that the switching element needs to repeat the switching operation, and therefore the service life of the switching element that repeats the switching operation needs to be considered, the switching-on circuit 3 of the present embodiment preferably uses a MOS transistor in a transistor as the switching element; the electromagnetic coil comprises a closing coil and a holding coil, the closing coil is connected with a capacitor and a transistor in the closing circuit 3, the transistor is used as a switching element, and when the controller 1 sends a signal to the transistor, the transistor enables the capacitor to be communicated with the closing coil. Specifically, the drain of the MOS transistor is connected to one end of the closing coil, the source of the MOS transistor is connected to one end of the capacitor C1, the other end of the capacitor C1 is connected to the other end of the closing coil, the gate of the MOS transistor is connected to the controller 1, and when the gate receives a signal, the MOS transistor is turned on, so that the capacitor C1 is communicated with the closing coil.

Preferably, the holding circuit 4 comprises a resistor R connected in series between the holding coil and the controller 1. The resistor R is mainly used for voltage division, and serious heating or burning caused by overhigh voltage at two sides of the holding coil is avoided. The controller 1 supplies a voltage directly to the resistor R and the holding coil. In addition, the holding circuit 4 may be additionally provided with a switching element such as a transistor or a relay, the resistor R and the operating voltage of the holding coil may be directly supplied from the power circuit 2, and then the controller 1 controls the connection or disconnection between the resistor R and the holding coil and the power circuit 2 by controlling the connection or disconnection of the switching element.

Preferably, the power circuit 2 at least includes a filtering unit and a DC/DC voltage converter, the filtering unit includes a capacitor C2, a capacitor C3 and an inductor L, and the connection modes are as shown in fig. 2, an input end of the filtering unit is connected to the power input, an output end of the filtering unit is connected to an input end of the DC/DC voltage converter, an output end of the DC/DC voltage converter is respectively connected to the capacitor, the controller 1 and the closing circuit 3, and the DC/DC voltage converter is mainly used for converting a high voltage or a low voltage of the power input into a voltage required by the operation of the capacitor C1, the controller 1 and the closing circuit 3.

Preferably, the vacuum circuit breaker further comprises a quick release spring mechanism, wherein the quick release spring mechanism is arranged between a vacuum switch of the vacuum circuit breaker and the electromagnetic coil, and the electromagnetic coil controls the quick release spring mechanism to drive the vacuum switch of the vacuum circuit breaker to be switched on or switched off through magnetic force. The quick release spring mechanism comprises an iron core 81 and a spring 82, wherein one end of the spring 82 is fixedly connected with the iron core 81, the other end of the spring 82 is fixedly connected with a first moving contact 91 of the vacuum circuit breaker, the iron core 81 is arranged in an electromagnetic coil, and the iron core 81 is attracted or released according to whether the electromagnetic coil is electrified or not, as shown in fig. 2, when the electromagnetic coil is electrified, the electromagnetic coil can generate magnetic force to enable the iron core 81 to move in the right direction and attract the iron core 81, meanwhile, the iron core 81 can extrude the spring 82 and push the first moving contact 91 to the right, so that the first moving contact 91 is in contact with a first fixed contact 92 to close the vacuum circuit breaker, and at the moment, the spring 82 is in a compressed; when solenoid did not get electric, solenoid lost magnetic force, then spring 82 can be because of the deformation effect resumes former shape, and push away iron core 81 to the left, and when iron core 81 recovered the normal position, spring 82 can be stretched, and pull first moving contact 91 toward the left simultaneously, make vacuum circuit breaker disconnection.

The quick release spring mechanism is also mechanically connected with the auxiliary interlock, and is used for driving the contact of the auxiliary interlock to be closed or opened, namely the iron core 81 is also fixedly connected with the second moving contact 93 of the auxiliary interlock in a mechanical connection mode, when the electromagnetic coil is electrified to drive the iron core 81 to move rightwards, the second moving contact 93 is driven to move rightwards at the same time, so that the auxiliary interlock is closed, when the electromagnetic coil is not electrified, and the spring 82 pushes the iron core 81 leftwards, the iron core 81 can simultaneously pull the second moving contact 93 to move leftwards, so that the auxiliary interlock is opened. When the auxiliary interlocking is closed, a signal is fed back to the controller 1 at the same time, so that the controller 1 controls the operation lamp to work.

The electromagnetic coil comprises a closing coil and a holding coil, the closing coil is connected with a capacitor and a transistor in the closing circuit 3, the transistor is used as a switching element, and when the controller 1 sends a signal to the transistor, the transistor enables the capacitor to be communicated with the closing coil.

The circuit breaker in the embodiment is a vacuum circuit breaker applied to a railway locomotive to be described. The following description is made in conjunction with a vacuum circuit breaker for a railway locomotive, and a preferred embodiment is described with reference to fig. 2:

1) after the locomotive is activated, the device is started, the power circuit 2 and the controller 1 are powered on, the power circuit 2 charges the capacitor C1 at the same time, and the charging time of the capacitor C1 is different according to the type selection of the capacitor C1, wherein the capacitor C1 adopts an energy storage capacitor, and the charging time is about 30S;

2) when the on/off switch sends an on signal to the controller 1, that is, a high level signal is sent to the controller 1, the controller 1 sends an instruction to a transistor in the on circuit 3 to turn on the transistor, so that the capacitor C1 releases electric energy, discharges electricity to the on coil, and the on coil is electrified and generates electromagnetic force to drive the iron core 81 to move rightwards, so that the first moving contact 91 and the first fixed contact 92 in the circuit breaker are closed, and the auxiliary interlock is closed; meanwhile, the controller 1 sends an instruction to the holding circuit 4 to enable the holding coil to be electrified all the time, so that magnetic force can be generated to suck the iron core 81 all the time, and the vacuum circuit breaker and the auxiliary interlock are kept in a closing state; when the controller 1 receives the signal after the auxiliary interlock is closed, the controller 1 stops sending the signal to the closing circuit 3, so that the transistor is not turned on, the closing coil is not kept in an electric state any more, and the power supply circuit 2 charges the capacitor C1 again.

3) When the opening/closing switch sends an opening signal to the controller 1, that is, a low level signal is sent to the controller 1, the controller 1 stops sending an instruction to the holding circuit 4, the holding coil loses power and loses electromagnetic force, the iron core 81 recovers to the original position under the action of the spring 82, the first moving contact 91 and the second moving contact 93 are pulled back to the left, and the vacuum switch and the auxiliary interlock of the circuit breaker are both disconnected.

The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.

Claims

1. An electromagnetic control device is connected with a power supply input, an opening/closing switch, an electromagnetic coil and an auxiliary interlock respectively during working, and is characterized in that: the device comprises a controller (1), a power circuit (2), a capacitor C1, a closing circuit (3) and a holding circuit (4); the power supply circuit (2) is respectively connected with the power supply input, the capacitor C1, the closing circuit (3) and the controller (1); the controller (1) is respectively connected with the opening/closing switch, the capacitor C1, the closing circuit (3) and the holding circuit (4); the capacitor C1 is connected to the closing circuit (3), and the closing circuit (3) is connected to the holding circuit (4) and the electromagnetic coil.

2. The electromagnetic control device according to claim 1, characterized in that: also included is a counter (6), the counter (6) being in communication with the controller (1) or the capacitor C1.

3. The electromagnetic control device according to claim 1, characterized in that: the controller also comprises a state indicating circuit (7), wherein the state indicating circuit (7) is connected with the controller (1).

4. The electromagnetic control device according to claim 1, characterized in that: the switching-on circuit (3) adopts a transistor or a relay as a switching element.

5. The electromagnetic control device according to claim 1, characterized in that: the holding circuit (4) comprises a resistor R connected in series between the solenoid and the controller (1).

6. The electromagnetic control device according to claim 1, characterized in that: the vacuum circuit breaker is characterized by further comprising a quick release spring mechanism, wherein the quick release spring mechanism is arranged between a vacuum switch of the vacuum circuit breaker and the electromagnetic coil, and the electromagnetic coil controls the quick release spring mechanism to drive the vacuum switch of the vacuum circuit breaker to be switched on or switched off through magnetic force.