CN115241789A - Intelligent multifunctional public and special demarcation branch box - Google Patents

Abstract

The invention discloses a multifunctional high-voltage cable branch box. The utility model includes a box body, an incoming line bushing and an outgoing line bushing arranged in the box body, and two side doors arranged on the box body. The lower chamber is also provided with a current transformer and a voltage transformer, and the box body is provided with a control panel located on one side of the upper chamber. A control unit that controls the operation of the operating mechanism of the device. After adopting the above structure, not only the on-off of the maintenance can be realized through the vacuum circuit breaker, but also the operation mechanism of the vacuum circuit breaker can be operated and controlled by collecting the sensing signals of the current transformer and the voltage transformer, and the control is convenient, reliable and effective. The safety is improved, and in addition, the heat dissipation effect is improved, and the safety and reliability are further improved.

Description

Intelligent multi-functional public-specialty boundary branch box

technical field

The invention relates to a matching device for branching user cables in a power supply system, in particular to an intelligent multifunctional public-specialty boundary branch box.

Background technique

In the power supply system, in order to meet the separate power supply requirements of different individuals or enterprise users, it is necessary to divide the power supply cable (one power supply, multiple loads or users) for use, which uses a branch box. In the prior art, conventional The branch box generally includes a metal shell of the branch box, a branch support structure, and an incoming and outgoing line sleeve for cable entry and exit in the metal shell. When the cable is divided, the cable cannot be effectively protected and controlled. When a certain outlet cable fails, it cannot be cut off and repaired at the branch end. In addition, the operation reliability is poor. When the temperature and humidity in the box are too high, it will inevitably cause damage. The cables inside the box are affected, which may cause safety hazards.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an intelligent multifunctional public-specialty boundary branch box with good controllability, convenient and quick maintenance and high safety.

In order to solve the above-mentioned technical problems, the intelligent multifunctional public-private demarcation branch box of the present invention includes a box body, an incoming line sleeve and an outgoing line sleeve arranged in the box body, and two side doors arranged on the box body, and the box body has an upper cavity A vacuum circuit breaker connected between the incoming line bushing and the outgoing line bushing and an operating mechanism for operating the vacuum circuit breaker are installed in the upper cavity, and a vacuum circuit breaker is installed in the lower cavity. The current transformer on one side of the tube and the voltage transformer arranged at the bottom of the box body, the box body is provided with a control panel on the side of the upper cavity, and the control panel has sensors for collecting the current transformer and the voltage transformer. A control unit that controls the operation of the operating mechanism of the vacuum circuit breaker.

The control panel is provided with a manual operation hole for manually operating the operating mechanism, an energy storage operation hole for performing an energy storage operation, and an electric closing button and an electric opening button for electrically operating the operating mechanism.

The control panel is also provided with an energy storage indicator light, an ammeter and a voltmeter.

The upper cavity is also provided with an SF6 air box for insulating and protecting the vacuum circuit breaker, and the vacuum circuit breaker is installed in the SF6 air box.

The control panel is provided with an SF6 barometer.

The box body is provided with a heat dissipation channel penetrating through the lower cavity.

The box body is also provided with a live display connected to the voltage sensing terminal on the incoming line bushing.

The operating mechanism is installed in an operating box.

The control panel is provided with a comprehensive protection control device.

After adopting the above structure, by installing the vacuum circuit breaker in the upper cavity of the box body and arranging the current transformer and the voltage transformer in the lower cavity, and at the same time arranging the control panel on the box body, not only can the vacuum circuit breaker realize the The on-off of the maintenance, and can also input the integrated protection device by collecting the sensing signals of the current transformer and the voltage transformer, and the integrated protection device controls the operation mechanism of the vacuum circuit breaker, which is convenient and reliable and effectively improves the safety. , In addition, the inner cavity of the box is divided into upper and lower cavities, which can realize the effective use of space in a specific space, and also help to improve the heat dissipation effect and further improve the safety and reliability.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the intelligent multifunctional public-specialty boundary branch box of the present invention;

Fig. 2 is the side view structure schematic diagram of the intelligent multifunctional public-department branch box of the present invention;

FIG. 3 is a schematic view of the rear view of the intelligent multifunctional public-departmental branch box of the present invention.

Detailed ways

The intelligent multifunctional public-departmental branch box of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in the figure, the intelligent multifunctional public-private demarcation branch box of the present invention includes a box body 1, an incoming line sleeve 2 and an outgoing line sleeve 3 arranged in the box body, and two side doors 4 arranged on the box body. The side door is hinged on the top of the box body, which is convenient for maintenance operations. At the same time, two other lower doors can be set on the box body. A lock box 24 is installed on the lower door, and the box body 1 has an upper cavity 5 and a lower cavity. Body 6, the upper cavity body 5 is equipped with a vacuum circuit breaker 7 connected between the incoming line bushing 2 and the outgoing line bushing 3 and an operating mechanism 8 for operating the vacuum circuit breaker, and the vacuum circuit breaker is responsible for the main circuit. For disconnection and connection, the operating mechanism 8 is installed in an operating box 23, and the lower cavity 6 is also provided with a current transformer 9 on one side of the incoming line bushing 2 and a voltage transformer 10 on the bottom of the box. The body 1 is provided with a control panel 11 located on one side of the upper cavity, and the control panel 11 has a control unit for collecting the sensing signals of the current transformer and the voltage transformer to operate and control the operating mechanism 8 of the vacuum circuit breaker, The control unit can control the operation mechanism according to the sensor signal. The control panel 11 is provided with an operation hole 12 for manual operation of the operation mechanism, an energy storage operation hole 13 for energy storage operation, and an electric operation for the operation mechanism. The electric closing button 14 and electric opening button 15 are also provided, and the control panel 11 is also provided with an energy storage indicator light 16, an ammeter 17 and a voltmeter 18, thereby driving the main operation of the vacuum circuit breaker through the electric and manual integrated operating mechanism. The contacts are connected and disconnected, and the opening and closing can be operated locally in the branch box by the operating mechanism, or the opening and closing of the switch can be electrically operated through the opening and closing button on the control panel.

Further, an SF6 air box 19 for insulating and protecting the vacuum circuit breaker can also be provided in the upper cavity 5, the vacuum circuit breaker 7 is installed in the SF6 air box 19, and the control panel 11 is provided with an SF6 air pressure gauge. 20.

Still further, a heat dissipation channel 21 that communicates with the lower cavity 6 can also be provided on the box body 1 to improve the heat dissipation effect and further ensure the safety of use. The live indicator 22 on the voltage sensing terminal on the incoming line bushing can monitor whether the primary circuit is live.

In addition, a comprehensive protection device can also be set up on the control panel. The protection device has voltage and current switch status acquisition, local/remote fault protection tripping, fault signal uploading to the background, and connecting the primary side of the voltage transformer to the main circuit of the cable. The secondary side can output 100V voltage signal and 220V power signal. Among them, the measuring voltage signal is connected to the voltmeter, the protection voltage signal is connected to the protection device, and the current transformer can convert the current signal of the primary circuit into a signal for measurement and protection. 5A signal, the measuring current signal is connected to the ammeter, and the protection current signal is connected to the comprehensive protection device. When the system is running, the comprehensive protection control device comprehensively judges the running state according to the collected voltage and current signals and the switch state, and compares the protection parameters. When it is determined that the line is faulty, a trip signal is sent, and the trip signal makes the electric opening control circuit conduct, and the action of the operating mechanism drives the vacuum circuit breaker to open. The protection device has an RS485 communication interface. The gate signal controls the circuit breaker.

Claims (9)

1. The utility model provides an intelligent multi-functional public special boundary feeder pillar, includes two side doors (4) that set up on inlet wire sleeve pipe (2) and outlet wire sleeve pipe (3) and the box that box (1), the box set up, its characterized in that: have last cavity (5) and lower cavity (6) in box (1), upward install in cavity (5) and connect vacuum circuit breaker (7) between inlet wire sleeve (2) and outlet bushing (3) and be used for carrying out operating device (8) of operating to vacuum circuit breaker, still be provided with current transformer (9) that are located inlet wire sleeve (2) one side and set up voltage transformer (10) at the bottom half in cavity (6) down, be provided with control panel (11) that are located last cavity one side on box (1), the last control unit that is used for gathering current transformer and voltage transformer's sensing signal and carries out operation control to vacuum circuit breaker's operating device (8) that has.

2. The intelligent multifunctional branch box for public and private demarcation lines according to claim 1, wherein: the control panel (11) is provided with an operation hole (12) for manually operating the operation mechanism, an energy storage operation hole (13) for storing energy and an electric closing button (14) and an electric opening button (15) for electrically operating the operation mechanism.

3. The intelligent multifunctional branch box for public and private demarcation according to claim 2, wherein: the control panel (11) is also provided with an energy storage indicator lamp (16), an ammeter (17) and a voltmeter (18).

4. The intelligent multifunctional public and private demarcation branch box according to claim 3, characterized in that: go up still to be provided with in cavity (5) and be used for carrying out insulation protection's SF6 gas tank (19) to vacuum circuit breaker, vacuum circuit breaker (7) are installed in SF6 gas tank (19).

5. The intelligent multifunctional public and private demarcation branch box according to claim 4, characterized in that: and an SF6 barometer (20) is arranged on the control panel (11).

6. The intelligent multifunctional branch box for public and private boundaries according to any one of claims 1 to 5, characterized in that: and a heat dissipation channel (21) communicated with the lower cavity (6) is arranged on the box body (1).

7. The intelligent multifunctional branch box for public and private demarcation lines according to claim 6, wherein: and the box body (1) is also provided with a charged display (22) connected to a voltage induction terminal on the wire inlet sleeve.

8. The intelligent multifunctional branch box for public and private demarcation according to claim 7, wherein: the operating mechanism (8) is mounted in an operating box (23).

9. The intelligent multifunctional branch box for public and private demarcation according to claim 8, wherein: and a protection control device (25) is arranged on the control panel.

Images