CN204242975U - Switchgear circuit breaker automatic mechanical opening device - Google Patents

Abstract

The utility model discloses a kind of breaker of switch cabinet automation switching-off device, switch cubicle is provided with separating brake hole, it comprises base for supporting, push-rod electric machine and insulating rod, push-rod electric machine is fixed on the position corresponding with the separating brake hole on switch cubicle by base for supporting, the stroke lever front end of push-rod electric machine connects described insulating rod, push-rod electric machine is provided with and rotates forward loop and reversion loop, described insulating rod is driven to advance to separating brake hole to make breaker open operation or to exit this separating brake hole by the rotating forward loop or reversion loop of connecting described push-rod electric machine, achieve the automation separating brake of circuit breaker, save the operation element amount of operation maintenance personnel.The rotating forward loop of push-rod electric machine is serially connected with the time relay, the time delay realizing rotating forward loop is connected, and makes operation maintenance personnel have the sufficient time to leave to treat separating brake circuit breaker with after arriving safe distance, and motor comes into operation combined floodgate, ensureing the personal safety of operation maintenance personnel, using as a servant power distribution network without the need to stopping.

Description

Switchgear circuit breaker automatic mechanical opening device

technical field

The utility model relates to an opening device of a circuit breaker of a switch cabinet.

Background technique

The 10kV high-voltage switchgear in the substation mostly adopts the KYN series central cabinet, and the circuit breaker may have secondary control circuit failures during operation, which makes it impossible to perform remote or local electric operation. The emergency opening hole of the switch is used for manual mechanical opening of the switch. In order to prevent personal accidents, according to the State Grid's "High Voltage Switchgear Operation Management Regulations", under normal circumstances, any circuit breaker that can be operated electrically should not be manually operated on the spot. Therefore, when it is found that the circuit breaker refuses to open in actual work, the circuit breaker can only be opened manually after the power supply of the upper level is shut down, and the circuit breaker can be opened manually after confirming that there is no voltage and no current. In this way, large-scale power outages or large-scale distribution network transfers will be caused, and the operation workload and operational risks of operation and maintenance personnel will also be greatly increased.

The device for the existing operation and maintenance personnel to manually and mechanically open the circuit breaker through the emergency opening hole of the cabinet in the switch cabinet is an insulating rod. The switch is opened by a person standing in front of the switch cabinet and pressing the mechanical opening button through an insulating rod. If there is a bus or circuit breaker failure during the operation of the operation and maintenance personnel, it will directly threaten the personal safety of the operators.

Utility model content

The utility model provides an automatic mechanical opening device for a circuit breaker of a switchgear, which overcomes the disadvantages of the prior art described in the background art.

The technical solution adopted by the utility model to solve its technical problems is:

The switchgear circuit breaker automatic mechanical opening device, the switchgear is provided with a opening hole, which includes a support base, a push rod motor and an insulating rod, the push rod motor is fixed on the switch cabinet through the support base, and the stroke of the push rod motor The front end of the rod is connected to the insulating rod, and the insulating rod corresponds to the position of the gate opening. The push rod motor is provided with a forward rotation circuit and a reverse rotation circuit. The insulating rod is driven to advance toward the opening to make the circuit breaker open or exit the opening.

In one embodiment: the forward rotation circuit of the push rod motor is connected in series with a time relay, so as to realize the delayed connection of the forward rotation circuit.

In one embodiment, a powerful magnet is attached to the supporting base, and the push rod motor and the supporting base are fixed on the switch cabinet through the powerful magnet.

In one embodiment: a buffer elastic member is connected between the stroke rod of the push rod motor and the insulating rod.

In one embodiment: it also includes a power supply for supplying power to the push rod motor, and the power supply is a storage battery or a power adapter.

In an embodiment: the forward rotation circuit is connected in series with two time relays.

In one embodiment: the insulating rods include nylon rods.

In an embodiment: the time relay includes a delay relay.

Compared with the background technology, this technical solution has the following advantages:

1. The automatic mechanical opening device of the circuit breaker of the switch cabinet. There is a opening hole on the switch cabinet, which includes a support base, a push rod motor and an insulating rod. The push rod motor is fixed on the opening corresponding to the opening hole on the switch cabinet through the support base. position, the front end of the stroke rod of the push rod motor is connected to the insulating rod, the push rod motor is provided with a forward rotation circuit and a reverse rotation circuit, and the insulating rod is driven to the The opening hole is advanced so that the circuit breaker is opened or withdrawn from the opening hole, which realizes the automatic mechanical opening of the circuit breaker and saves the operation workload of the operation and maintenance personnel.

2. The forward rotation circuit of the push rod motor is connected in series with a time relay to realize the delayed connection of the forward rotation circuit. When the operation and maintenance personnel connect the forward rotation circuit, the time relay can enable the operation and maintenance personnel to have enough time to leave and wait. After the open circuit breaker reaches the safe distance, the delay of the motor ends, and the switch starts to operate to ensure the personal safety of the operation and maintenance personnel, and there is no need to shut down the distribution network.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 depicts a cross-sectional view of the automatic mechanical opening device for a switchgear circuit breaker according to the present invention.

Fig. 2 depicts a top view of the automatic mechanical opening device of the switch cabinet circuit breaker described in the present invention.

detailed description

Please refer to Figure 1 and Figure 2, the automatic mechanical opening device of the switch cabinet circuit breaker, the switch cabinet is provided with a opening hole, which includes a support base, a push rod motor 10, an insulating rod 20 and a power supply for supplying power to the push rod motor , the push rod motor 10 is fixed on the switch cabinet through the support base, the front end of the stroke rod of the push rod motor 10 is connected to the insulating rod 20, the insulating rod 20 corresponds to the position of the opening hole, and the push rod motor is provided with a forward rotation circuit And the reverse circuit, by turning on the forward circuit or reverse circuit of the push rod motor to drive the insulating rod 20 to advance to the opening to make the circuit breaker open or exit the opening. The push rod motor 10 is provided with a forward rotation button 11 and a reverse rotation button 12 for connecting the forward rotation circuit and the reverse rotation circuit, and is also provided with a stop button 13 for stopping the forward rotation circuit and the reverse rotation circuit. The power supply of 10 can be powered by a storage battery or a power adapter. The insulating rod in this embodiment may be a nylon rod.

The forward rotation circuit of the push rod motor is connected in series with a time relay 14, which can realize the delayed connection of the forward rotation circuit and provide enough time for the operation and maintenance personnel to leave the circuit breaker to be opened. The switch circuit is connected in series with two time relays 14, and the time relays are delay relays.

A powerful magnet 30 is mounted on the supporting base, and the push rod motor 10 and the supporting base are fixed on the switch cabinet through the powerful magnet 30 . There is also a buffer elastic member 40 connected between the stroke rod of the push rod motor 10 and the insulating rod 20, which is used to absorb the remaining stroke after the push rod motor opens the circuit breaker, and at the same time, it can also prevent the breaker from occurring when the insulating rod 20 is advanced. In the stuck state, it plays the role of protecting the motor.

When the circuit breaker cannot be opened by remote or local electric operation during operation, the automatic mechanical opening device is used to open the circuit breaker. The automatic mechanical opening process is as follows: the operation and maintenance personnel operate the forward rotation button 11, After the delay of two time relays 14 (during the period, the operation and maintenance personnel have left the circuit breaker to a safe distance), the push rod motor 10 starts and drives the insulating rod 20 to push the opening hole, and the insulating rod 20 presses the circuit breaker The unique mechanical opening button opens the circuit breaker, realizing safe opening without power failure opening. After the brake is opened, the travel lever may continue to move forward to complete the remaining motion stroke of the push rod motor 10, but the remaining motion stroke can be absorbed and buffered by the spring between the stroke rod and the insulating rod 20 to protect the push rod motor.

The automatic mechanical opening device of the switch cabinet circuit breaker described in the utility model is especially suitable for the automatic mechanical opening of the 10kV switch cabinet circuit breaker.

The above is only a preferred embodiment of the utility model, so the scope of implementation of the utility model cannot be limited accordingly, that is, the equivalent changes and modifications made according to the patent scope of the utility model and the contents of the specification should still belong to this utility model. within the scope of utility models.

Claims (8)

1. breaker of switch cabinet automation switching-off device, switch cubicle is provided with separating brake hole, it is characterized in that: comprise base for supporting, push-rod electric machine and insulating rod, described push-rod electric machine is fixed on switch cubicle by base for supporting, the stroke lever front end of described push-rod electric machine connects described insulating rod, the position in the corresponding separating brake hole of described insulating rod, described push-rod electric machine is provided with and rotates forward loop and reversion loop, drives described insulating rod to advance to separating brake hole to make breaker open operation or to exit this separating brake hole by the rotating forward loop or reversion loop connecting described push-rod electric machine.

2. breaker of switch cabinet automation switching-off device according to claim 1, is characterized in that: the rotating forward loop of described push-rod electric machine is serially connected with the time relay, connects with the time delay realizing rotating forward loop.

3. breaker of switch cabinet automation switching-off device according to claim 1, be is characterized in that: on described base for supporting, attaching has strong magnets, this push-rod electric machine and base for supporting is fixed on switch cubicle by this strong magnets.

4. breaker of switch cabinet automation switching-off device according to claim 1, is characterized in that: be connected with a snubber elastomeric part between the stroke lever of described push-rod electric machine and described insulating rod.

5. breaker of switch cabinet automation switching-off device according to claim 1, is characterized in that: also comprise the power supply of powering to described push-rod electric machine, and described power supply is storage battery or power supply adaptor.

6. breaker of switch cabinet automation switching-off device according to claim 2, is characterized in that: described rotating forward loop is serially connected with two time relays.

7. breaker of switch cabinet automation switching-off device according to claim 1, is characterized in that: described insulating rod comprises nylon rod.

8. the breaker of switch cabinet automation switching-off device according to claim 2 or 6, is characterized in that: the described time relay comprises time-delay relay.