CN215120117U - Switching-on/off circuit - Google Patents

Abstract

The utility model relates to a switching-on/off circuit, including main power supply, separating brake circuit, combined floodgate circuit and measurement and control terminal, separating brake circuit and combined floodgate circuit connect the live wire and the zero line both ends at the main power supply after joining in parallel, measurement and control terminal's active output switch and separating brake circuit join in parallel, its characterized in that: the linkage button comprises a normally closed end and a normally open end linked with the normally closed end, the normally closed end of the linkage button is connected with the active output switch in series, and the normally open end of the linkage button is connected with the opening circuit in series. Has the advantages that: thereby effectively guarantee that two return circuits of separating brake circuit and active output switch independently carry out work through the linkage of above-mentioned linkage button to guarantee that short circuit phenomenon can not appear.

Description

Switching-on/off circuit

Technical Field

The utility model relates to a switching-on and switching-off circuit.

Background

The switching-on/off circuit usually includes a switching-off circuit and a switching-on circuit which are connected in parallel, the switching-on/off circuit and the switching-on circuit are controlled by a breaker under normal conditions, the breaker includes a switching-on coil and a switching-off coil, when switching-on is needed, the switching-on switch is manually closed and the switching-on coil in the breaker is controlled to work, the switching-on circuit is opened, in order to prevent the safety accident caused by the fact that the switching-on circuit continues to work when the main power supply of the switching-on/off circuit is abnormal, or when the switching-on circuit is manually closed, intelligent equipment (measurement and control terminal) is added in the loop for controlling the switching-on/off circuit, when the current or voltage of the main power supply is abnormal or manually operated in the background, the main circuit is controlled by closing the active output switch of the intelligent equipment, but the current problem is that when the intelligent equipment is the active output switch, the active output switch is connected in parallel to the opening and closing circuit, and when the intelligent monitoring device is manually operated, the circuit of the intelligent monitoring device can be possibly short-circuited, so that the active output switch cannot be well matched with the opening and closing circuit for use. When active output exists in the loop, the active output needs to be cut off when other loop control is carried out so as to ensure that the short circuit phenomenon does not occur, and the original state of the loop is in a closed state, so that further improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide a divide-shut brake circuit with low costs, can guarantee two branches circuit autonomous working.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a switching-on/off circuit, includes main power supply, separating brake circuit, closing circuit and measurement and control terminal, separating brake circuit and closing circuit connect in parallel the back at the live wire and the zero line both ends of main power supply, measurement and control terminal's active output switch and separating brake circuit are parallelly connected its characterized in that in parallel: the linkage button comprises a normally closed end and a normally open end linked with the normally closed end, the normally closed end of the linkage button is connected with the active output switch in series, and the normally open end of the linkage button is connected with the opening circuit in series.

The frame circuit breaker comprises a switching-off coil and a switching-on coil, the switching-off coil is arranged in the switching-off circuit, and the switching-on coil is arranged in the switching-on circuit.

The opening circuit further comprises a first normally open switch connected with the opening coil in series, the closing circuit further comprises a first normally closed switch connected with the closing coil in series, and the first normally open switch and the first normally closed switch are linked with each other.

The closing loop also comprises a switch which is connected with the other end of the closing coil in series and is used for manual closing.

And one end of the normally open end of the linkage button is connected with the opening coil in series, and the other end of the normally open end of the linkage button is connected with a live wire of the main power supply.

The frame circuit breaker further comprises a second normally-open switch acting along with the opening coil, and the first indicator lamp is connected with the second normally-open switch in series and used for opening indication.

The frame circuit breaker further comprises a third normally-open switch acting along with a closing coil, and the second indicator lamp is connected with the third normally-open switch in series and used for closing indication.

The frame circuit breaker is also connected with a mutual inductor in series and used for controlling related components in the frame circuit breaker according to the detection result of the mutual inductor.

Still include the fuse, the both ends of fuse are connected between main power supply and the separating brake circuit.

The measurement and control terminal is internally connected with a measurement circuit and used for automatically controlling the active output switch to be closed or manually operating the measurement and control terminal to close the active output switch when the measurement and control terminal monitors that the measurement circuit is abnormal.

Compared with the prior art, the utility model has the advantages of: thereby effectively guarantee this two loops of separating brake circuit and active output switch independently to work through the linkage of above-mentioned linkage button, promptly: the normally open end of the linkage button is opened in a default state, the normally closed end of the linkage button is closed, the measurement and control terminal is in a protection state at the moment, and if the measurement and control terminal monitors abnormality, the active output switch is automatically closed or manually closed, so that short circuit does not occur in the circuit; when the normally open end of the control linkage button is closed and the normally closed end is opened, the normal control circuit can be switched on and off, and the active output switch of the measurement and control terminal is in a breaking state; therefore, the circuit can ensure that the two loops work independently so as to ensure that the short circuit phenomenon cannot occur.

Drawings

Fig. 1 is a specific circuit diagram of an opening/closing circuit operated in an embodiment of the present invention;

fig. 2 is the embodiment of the utility model provides an embodiment of the concrete work circuit diagram of monitor terminal.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1, an opening and closing circuit includes a main power supply, an opening circuit, a closing circuit and a measurement and control terminal, the opening circuit and the closing circuit are connected in parallel and then connected to two ends of a live line and a zero line of the main power supply, an active output switch KPD of the measurement and control terminal is connected in series with the opening circuit, a measurement circuit is connected in a measurement and control terminal PD, the measurement circuit connected to the measurement and control terminal PD is as shown in fig. 2 and includes a voltage measurement circuit, a current measurement circuit, a capacitance sampling circuit and the like, and when the measurement and control terminal monitors that the measurement circuit is abnormal, the active output switch KPD is automatically controlled to be closed or the measurement and control terminal is manually operated to close the active output switch KPD. In order to realize that the two loops of the active output switch KPD and the opening circuit of the measurement and control terminal can be independently used, the opening and closing circuit further comprises a linkage button SBS, the linkage button SBS comprises a normally closed end and a normally open end linked with the normally closed end, the normally closed end of the linkage button SBS is connected with the active output switch KPD in series, and the normally open end of the linkage button SBS is connected with the opening circuit in series.

The closing and opening circuit further comprises a frame circuit breaker QF, the frame circuit breaker QF comprises a separating coil F and a closing coil X, the separating coil F is arranged in the separating circuit, the closing coil X is arranged in the closing circuit, the separating circuit further comprises a first normally-open switch K1 which is connected with the separating coil F in series, the closing circuit further comprises a first normally-closed switch K2 which is connected with the closing coil X in series, and the first normally-open switch K1 and the first normally-closed switch K2 are linked with each other, namely: when the first normally open switch K1 is opened, the first normally closed switch K2 is closed, and when the first normally open switch K1 is closed, the first normally closed switch K2 is opened.

In addition, the closing loop further comprises a switch SBC connected in series with the other end of the closing coil X for manual closing. One end of the normally open end of the SBS is connected with the opening coil F in series, and the other end of the normally open end of the SBS is connected with a live wire of the main power supply.

In addition, the opening and closing circuit further comprises a first indicator light HG and a second indicator light HR, the frame circuit breaker QF further comprises a second normally-open switch F1 acting along with the opening coil F and a third normally-open switch X2 acting along with the closing coil X, and the first indicator light HG is connected with the second normally-open switch F1 in series and used for opening indication; the second indicator light HR is connected with the third normally-open switch X2 in series and is used for closing indication. The switching-off circuit and the switching-on circuit are two opposite working processes, only one of the switching-off coil F and the switching-on coil X can work, when the switching-off coil F works, the second normally-open switch F1 is closed, the HG lamp is on, the switching-on coil X does not work at the moment, the third normally-open switch X2 is opened, and the HR lamp is turned off; when the closing coil X works, the third normally-open switch X2 is closed, the HR lamp is turned on, the opening coil F does not work at the moment, the second normally-open switch F1 is opened, and the HG lamp is turned off.

The frame circuit breaker QF is also connected with a mutual inductor TAO in series and used for controlling related components in the frame circuit breaker QF according to the detection result of the mutual inductor TAO.

In order to protect the switching-on and switching-off circuit, the circuit further comprises a fuse FU, and two ends of the fuse FU are connected between a main power supply and the switching-off and switching-on circuit.

As shown in fig. 2, the measurement circuit connected in the measurement and control terminal PD includes a voltage measurement circuit and a current measurement circuit, and when the measurement and control terminal monitors that any one of the above results is abnormal, the active output switch KPD is automatically controlled to be closed. In this embodiment, the measurement and control terminal is a low-voltage measurement and control terminal.

When in use, the switching-off circuit has two control methods: firstly, intelligently controlling brake opening; the normally open end of the linkage button SBS is opened in a default state, the normally closed end of the linkage button SBS is closed, the active output switch KPD is closed when the monitoring terminal monitors abnormity or the background operation is carried out manually, the active output switch KPD is provided with a power supply, a loop is formed among the normally closed end of the linkage button SBS, the active output switch KPD and a separating brake coil F of a QF in the frame circuit breaker, the separating brake coil F in the loop works, and the active output switch KPD is protected from effectively working; secondly, manually controlling the brake separating circuit; when the normally open end of the SBS is manually pressed, the normally open end of the SBS is closed, and the normally closed end of the corresponding SBS is opened, the loop of the active output switch KPD can be in a breaking state, and the opening and closing circuit can normally work; therefore, the SBS can effectively ensure that the two loops work independently through the linkage button to ensure the safety of the loops.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a switching-on/off circuit, includes main power supply, separating brake circuit, closing circuit and measurement and control terminal, separating brake circuit and closing circuit connect in parallel the back at the live wire and the zero line both ends of main power supply, measurement and control terminal's active output switch (KPD) and separating brake circuit are parallelly connected its characterized in that: the electronic device further comprises a linkage button (SBS), the linkage button (SBS) comprises a normally closed end and a normally open end linked with the normally closed end, the normally closed end of the linkage button (SBS) is connected with the active output switch (KPD) in series, and the normally open end of the linkage button (SBS) is connected with the separating brake circuit in series.

2. The switching-closing circuit according to claim 1, characterized in that: the frame circuit breaker (QF) comprises a switching-off coil (F) and a switching-on coil (X), the switching-off coil (F) is arranged in the switching-off circuit, and the switching-on coil (X) is arranged in the switching-on circuit.

3. The switching-closing circuit according to claim 2, characterized in that: the separating brake circuit further comprises a first normally open switch (K1) connected with the separating brake coil (F) in series, the closing circuit further comprises a first normally closed switch (K2) connected with the closing coil (X) in series, and the first normally open switch (K1) and the first normally closed switch (K2) are linked with each other.

4. The switching-closing circuit according to claim 2, characterized in that: the switching-on circuit also comprises a Switch (SBC) which is connected with the other end of the switching-on coil (X) in series and is used for manual switching-on.

5. The switching-closing circuit according to claim 2, characterized in that: one end of the normally open end of the linkage button (SBS) is connected with the opening coil (F) in series, and the other end of the normally open end of the linkage button (SBS) is connected with a live wire of the main power supply.

6. The switching-closing circuit according to claim 2, characterized in that: the frame circuit breaker (QF) further comprises a second normally-open switch (F1) acting along with the opening coil (F), and the first indicator lamp (HG) is connected with the second normally-open switch (F1) in series and used for opening indication.

7. The switching-closing circuit according to claim 2, characterized in that: the frame circuit breaker (QF) further comprises a third normally-open switch (X2) acting along with a closing coil (X), and the second indicator lamp (HR) is connected with the third normally-open switch (X2) in series and used for closing indication.

8. The switching-closing circuit according to claim 2, characterized in that: the frame circuit breaker (QF) is also connected with a mutual inductor (TAO) in series and used for controlling each part in the frame circuit breaker (QF) according to the detection result of the mutual inductor (TAO).

9. The switching-off and switching-on circuit according to any one of claims 1 to 8, characterized in that: still include Fuse (FU), between main power source and the separating brake circuit is connected at the both ends of Fuse (FU).

10. The switching-off and switching-on circuit according to any one of claims 1 to 8, characterized in that: the measurement and control terminal is internally connected with a measurement circuit and used for automatically controlling the active output switch (KPD) to be closed or manually operating the measurement and control terminal to close the active output switch (KPD) when the measurement and control terminal monitors that the measurement circuit is abnormal.

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