CN212231074U - Anti-jumping loop - Google Patents

Abstract

An anti-tripping loop comprises an anti-tripping loop, a closing loop and a separating loop, wherein the anti-tripping loop comprises an anti-tripping relay, a resistor, a normally open contact and a normally closed contact; and the normally-open contact and the anti-tripping relay are respectively connected with the opening loop. The utility model provides a prevent jumping the return circuit, optimize and simplify the electric circuit, reduce the volume of preventing jumping the relay, reduce the consumption for prevent jumping the action time of relay, make the wholeness ability more reliable.

Description

Anti-jumping loop

Technical Field

The utility model relates to an electric automatization technology field especially relates to a prevent jumping loop.

Background

In electrical, trip prevention is simply called "switch jump prevention", and "jump" means that a relay protection device trips when a circuit breaker is manually or automatically closed on a faulty line. At this time, if the operator still puts the control switch at the closing position, or the contact of the automatic reclosing device is not reset, the circuit breaker will be closed again. Because the fault on the line is not eliminated, the protection device acts on tripping again, so that the phenomenon of multiple times of 'tripping in' occurs. As a result, the breaking capability of the circuit breaker is reduced or damaged, and even an explosion accident is caused. The anti-tripping relay has the function of effectively preventing the circuit breaker from repeatedly closing and tripping when the circuit breaker receives tripping and closing commands at the same time, breaking a closing loop and reliably placing the circuit breaker at a tripping position.

However, the anti-tripping loop in the prior art is too complex, the volume of the anti-tripping relay is too large, and even a plurality of anti-tripping relays need to be arranged, so that the power consumption is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a to the defect in the background art, provide a prevent jumping the return circuit, optimize and simplify the electric return circuit, reduce the volume of preventing jumping the relay, reduce the consumption for prevent jumping the action time of relay, make the wholeness can be more reliable.

To achieve the purpose, the utility model adopts the following technical proposal:

an anti-tripping loop comprises an anti-tripping loop, a closing loop and a separating loop, wherein the anti-tripping loop comprises an anti-tripping relay, a resistor, a normally open contact and a normally closed contact;

and the normally-open contact and the anti-tripping relay are respectively connected with the opening loop.

Preferably, the closing loop comprises a closing coil and a closing switch, one end of the closing switch is connected with the normally closed contact, and the other end of the closing switch is connected with the closing coil.

Preferably, the separating brake loop comprises a separating brake coil and a separating brake switch, one end of the separating brake switch is connected with the normally open contact and the anti-tripping relay, and the other end of the separating brake switch is connected with the separating brake coil.

Preferably, the device also comprises a closing input contact and an opening input contact;

the switching-on input contact is respectively connected with the tripping-preventing loop and the switching-on loop, and the switching-off input contact is respectively connected with the tripping-preventing loop and the switching-off loop.

Has the advantages that:

1. the utility model discloses simplify and prevent jumping the return circuit, reduce the space and use, reduce and prevent jumping the volume and the quantity of relay, reduce the consumption, promote the speed of response action.

Drawings

Fig. 1 is a circuit diagram of an anti-trip circuit according to an embodiment of the present invention.

Wherein: the tripping-preventing relay comprises an anti-tripping relay 1, a resistor 2, a normally open contact 3, a normally closed contact 4, a closing switch 5, a closing coil 6, an opening switch 7, an opening coil 8, a closing input contact 9, an opening input contact 10, a positive control master 11 and a negative control master 12.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The utility model discloses an anti-tripping loop, including anti-tripping loop, combined floodgate return circuit and separating brake return circuit, anti-tripping loop includes anti-tripping relay 1, resistance 2, normally open contact 3 and normally closed contact 4, anti-tripping relay 1 one end is connected resistance 2, and the other end is connected normally open contact 3, the normally open contact 3 other end is connected normally closed contact 4, the normally closed contact 4 other end is connected combined floodgate return circuit;

the normally open contact 3 and the anti-tripping relay 1 are respectively connected with the opening loop.

Preferably, the closing loop comprises a closing coil 6 and a closing switch 5, one end of the closing switch 5 is connected to the normally closed contact 4, and the other end of the closing switch is connected to the closing coil 6.

Preferably, the opening loop comprises an opening coil 8 and an opening switch 7, one end of the opening switch 7 is connected with the normally open contact 3 and the anti-tripping relay 1, and the other end of the opening switch is connected with the opening coil 8.

Preferably, the device also comprises a closing input contact 9 and an opening input contact 10;

the switching-on input contact 9 is respectively connected with the tripping-preventing loop and the switching-on loop, and the switching-off input contact 10 is respectively connected with the tripping-preventing loop and the switching-off loop.

The working principle of the utility model is as follows:

in the utility model, the negative control mother 12 is always communicated with the whole loop;

when normally closing the switch:

the circuit is in a switching-off state, the switching-on switch 5 of the switching-on loop is closed, so that the switching-on loop is in a normally closed state, the switching-off switch 7 of the switching-off loop is disconnected, so that the switching-off loop is in a normally open state, at the moment, the anti-tripping relay 1 is not electrified, and the normally closed contact 4 is in a closed state;

when the closing input contact 9 is connected to the main control unit 11, the closing coil 6 is powered on to complete normal closing, and it should be noted here that, in order to simplify the circuit and facilitate understanding, the closing input contact 9 is not shown in fig. 1 to be connected to the circuit where the main control unit 11 is located, and in actual operation, the closing input contact 9 is connected to the circuit where the main control unit 11 is located in various ways, which is not described herein.

After closing is finished, the closing switch 5 is turned over to be in a normally open state, the opening switch 7 is turned over to be in a normally closed state, and the whole closing action is 50 ms;

and disconnecting the switching-on input contact 9 from the positive control bus 11 to keep a switching-on state.

When the brake is normally opened:

the circuit is in a closing state, the anti-tripping relay 1 is not powered at this time, the opening switch 7 is in a normally closed state at this time, the opening input contact 10 is connected to the positive control bus 11, the opening coil 8 is powered to complete normal opening, it needs to be noted here that, in order to simplify the circuit and facilitate understanding, the opening input contact 10 is not shown in fig. 1 to be connected to a loop where the positive control bus 11 is located, in actual operation, the opening input contact 10 is connected to the loop where the positive control bus 11 is located in various ways, and description is not given here.

Meanwhile, the anti-tripping relay 1 is electrified, the normally closed contact 4 is turned over and is in a normally open state, the normally open contact 3 is turned over and is in a normally closed state, and the whole action time is 8 ms;

after the opening of the brake is finished, the connection between the opening input contact 10 and the positive control bus 11 is disconnected, and the opening state is kept.

Time hopping prevention:

the realization of the anti-jump comprises the following steps: under the switching-off state, closing input contact 9 keeps being connected with positive accuse mother 11, and closing breaks down, immediately breaks off brake, after the switching-off, no longer moves, breaks off closing input contact 9, the connection of switching-off input contact 10 and positive accuse mother 11, realizes normally separating brake, closing, specific:

stage one: normally closing, specifically referring to the normal closing process, and completing closing;

and a second stage: after switching on, the opening input contact 10 is immediately connected to the positive control nut 11, within 8ms, the normally closed contact 4 is turned over, at the moment, the switching-on loop is in a normally open state, and the whole switching-on loop is not switched on, so that the turning over of the normally closed contact 4 is finished under the condition of no electricity, and the cutting-off with points is not needed, namely, the arc breaking is not needed to be considered; meanwhile, the normally open contact 3 is turned over and is in a normally closed state, the closing input contact 9 is connected with the positive control nut 11, and a loop from the closing input contact 9 to the normally open contact 3 to the anti-tripping relay 1 is electrified, so that the relay is in an electrified state;

and a third stage: after the switching-off is finished, although the switching-on loop is in a normally closed state at the moment, the normally closed contact 4 is in a normally open state, at the moment, the loop from the switching-on input contact 9 to the normally closed contact 4 and then to the switching-on coil 6 is not communicated, and the switching-on is not executed any more;

and a fourth stage: the opening input contact 10 is disconnected from the positive control master 11, at the moment, the closing input contact 9 is kept connected with the positive control master 11, and the opening input is connected to the normally open contact 3 and then to the tripping-preventing relay 1, the tripping-preventing relay 1 is in an electrified state, but the closing loop still keeps the state of being incapable of closing in the third stage;

and a fifth stage: the connection between the closing input contact 9 and the positive control nut 11 is disconnected, the anti-tripping relay 1 loses power, and the whole circuit is restored to the opening state.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims (4)

1. An anti-bounce circuit, comprising: the tripping-preventing circuit comprises a tripping-preventing relay, a resistor, a normally open contact and a normally closed contact, wherein one end of the tripping-preventing relay is connected with the resistor, the other end of the tripping-preventing relay is connected with the normally open contact, the other end of the normally open contact is connected with the normally closed contact, and the other end of the normally closed contact is connected with the switching-on circuit;

and the normally-open contact and the anti-tripping relay are respectively connected with the opening loop.

2. An anti-bounce circuit according to claim 1, wherein:

the closing loop comprises a closing coil and a closing switch, one end of the closing switch is connected with the normally closed contact, and the other end of the closing switch is connected with the closing coil.

3. An anti-bounce circuit according to claim 1, wherein:

the opening circuit comprises an opening coil and an opening switch, one end of the opening switch is connected with the normally open contact and the anti-tripping relay, and the other end of the opening switch is connected with the opening coil.

4. An anti-bounce circuit according to claim 1, wherein:

the switching-on input contact and the switching-off input contact are also included;

the switching-on input contact is respectively connected with the tripping-preventing loop and the switching-on loop, and the switching-off input contact is respectively connected with the tripping-preventing loop and the switching-off loop.

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