An intelligent control power supply box overhauling and power transmission device

Abstract

The utility model belongs to the technical field of distribution box, concretely relates to a kind of overhaul power supply box intelligent control power transmission device, including total power supply control box and several overhaul power supply boxes, and the incoming line end inside total power supply control box is provided with power supply total air switch, and the input end of each overhaul power supply box is respectively connected to the output end of power supply total air switch by branch air switch, and multiple feeder circuits are provided in each overhaul power supply box, and the outgoing line end of each feeder circuit is correspondingly connected with one power socket for inserting temporary power plug during overhaul, and the leakage protection switch with leakage and overload protection function is respectively arranged on each feeder circuit, and the control contactor that can be remotely controlled to attract / close is connected with secondary line control circuit.The device can realize remote power transmission and timing power-off of overhaul power supply box through mobile phone APP, which can effectively reduce the trouble and safety risk caused by frequent connection and disconnection of temporary power line in overhaul work and stop power transmission operation.

Description

Technical Field

[0001] This utility model belongs to the field of distribution box technology, specifically relating to an intelligent control power supply device for maintenance power supply boxes. Background Technology

[0002] In routine equipment maintenance at the factory, after the temporary power application obtains a temporary power work permit according to procedures, an electrician must inspect the electrical equipment and cables on-site to ensure they are qualified. First, connect the load-side cable of the electrical equipment. Then, loosen the fixing screws of the junction box in the on-site maintenance power supply box, open the junction box, connect the power-side cable, and after explosion-proof treatment of the cable outlet in the explosion-proof area, close the junction box, tighten the fixing screws, and manually turn on the switch on the maintenance power supply box to supply power. After the temporary power supply ends, disconnect the power and disconnect the cables in the reverse order. The above process must be repeated when the power supply point changes. Due to the large demand for temporary power during enterprise maintenance or technical upgrades, the power outage and restoration operations are cumbersome and labor-intensive. Furthermore, the dispersed power supply points and limited number of electricians result in slow power restoration speeds. In addition, the frequent connection and disconnection of temporary power lines, as well as frequent power outages and restorations, pose safety risks such as electric shock and explosions. Therefore, there is an urgent need to find a more convenient control and power supply device for connecting and disconnecting temporary power lines during on-site maintenance. Utility Model Content

[0003] In response to the above situation, this utility model provides an intelligent control power supply device for maintenance power supply boxes, which can effectively reduce the frequent connection and disconnection of temporary wires during maintenance work, as well as the trouble and safety risks caused by power outage and power supply operations.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A smart control power supply device for maintenance power boxes includes a main power control box connected to the output end of a substation, and several maintenance power boxes branching off from the main power control box. The main power control box has a main power circuit breaker at its inlet. The input ends of each maintenance power box are connected to the output end of the main power circuit breaker via branch circuit breakers. Each maintenance power box has multiple feeder circuits, forming a primary main circuit. Each feeder circuit's output end is connected to a power socket for plugging in temporary electrical outlets during maintenance. Each feeder circuit is equipped with a leakage current protection switch with leakage and overload protection functions, and a control contactor capable of remotely controlling its engagement / disengagement. The control contactor is connected to a secondary control circuit.

[0006] Furthermore, each of the secondary line control circuits is equipped with a corresponding WiFi switch, enabling remote power supply and timed power cut-off of the control contactors on each feeder circuit via a mobile app. By controlling the WiFi switch via the mobile app, the secondary line control circuit can control the corresponding feeder circuit's control contactor inside the maintenance power supply box to engage or disengage, thereby enabling power supply and shutdown operations for temporary electrical equipment. Simultaneously, a timed power cut-off period can be set via the mobile app; when the temporary power usage time reaches the set time, the power supply to the feeder circuit's socket is automatically cut off.

[0007] Preferably, each of the WiFi circuit breakers is also equipped with a manually operable fuse on one side for emergency power supply in case of WiFi circuit breaker failure. The fuse is connected in parallel with the WiFi circuit breaker. If the WiFi circuit breaker fails and cannot automatically control the feeder circuit for power supply, but the temporary electrical equipment urgently needs power, a professional electrician can operate the fuse on-site after obtaining temporary power supply permits to manually engage the control contactor of the corresponding feeder circuit, providing emergency power to the corresponding power socket.

[0008] Furthermore, the temporary power plug is connected to one end of a temporary cable, and the other end of the temporary cable is connected to the temporary electrical equipment. The temporary power plug is a dedicated aviation plug that is calculated to meet the load current requirements of the temporary electrical equipment and is compatible with the power supply socket of the maintenance power supply box.

[0009] Preferably, the maintenance power supply box can be divided into two types: explosion-proof and non-explosion-proof. Each power supply socket is installed on the bottom outer side of the maintenance power supply box. The bottom of the maintenance power supply box has mounting holes matching the number of power supply sockets. The power supply sockets are securely installed below the corresponding mounting holes using sealing cable sleeves. When the maintenance power supply box is an explosion-proof box, the corresponding power supply sockets and temporary power plugs must also use explosion-proof aviation sockets and plugs.

[0010] Furthermore, each of the secondary line control circuits is also equipped with a power switch for manually closing / disconnecting its control power supply; the front panel of the maintenance power supply box is equipped with a switch knob corresponding to each of the power switches, that is, the power switch is preferably a rotary circuit breaker.

[0011] Preferably, the front panel of the maintenance power supply box is also provided with a main power indicator light for indicating the power on / off status of the power input terminal of the maintenance power supply box, and branch circuit indicator lights for indicating the power on / off status of the power output terminals of each feeder circuit.

[0012] This utility model also includes other components that enable its normal use, all of which are conventional means in the field. In addition, devices or components not limited in this utility model, such as WiFi switch and matching mobile APP, all adopt existing technology in the field.

[0013] The beneficial effects of this utility model are as follows:

[0014] This utility model provides an intelligent control power supply device for maintenance power boxes, simplifying the power supply process for temporary power needs during routine maintenance. It eliminates the need to open the junction box of the maintenance box for wiring. After the applicant obtains a temporary power supply work permit according to procedures, the electrician can control the WiFi switch via a mobile app to supply power to the corresponding connections in the maintenance box that require power. Simultaneously, a timed power-off period can be set via the app; when the set time is reached, the power supply is automatically cut off, achieving rapid power supply and timed power-off, saving manpower, improving work efficiency, and eliminating the safety risks associated with frequent connection and disconnection of temporary power lines and power outage operations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the panel layout of the maintenance power supply box in this utility model.

[0016] Figure 2 This is a diagram showing the arrangement of components inside the main power control box of this utility model.

[0017] Figure 3 This is the electrical schematic diagram of the primary main circuit of the power transmission device in this utility model.

[0018] Figure 4 This is the electrical schematic diagram of the secondary control circuit of the power transmission device in this utility model. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0020] It should be noted that the terms "upper," "lower," "front," "back," "inner," and "outer," which indicate direction or positional relationship, are based on the attached drawings and are used only for ease of description.

[0021] Example 1

[0022] like Figure 1-4As shown, an intelligent control power supply device for maintenance power boxes includes a main power control box 1 connected to the output terminal of a substation (not shown in the figure), and six maintenance power boxes 2 branched to the main power control box. The main power control box is equipped with a main power supply circuit breaker 3 at its inlet terminal. The inlet terminals 13 of the six maintenance power boxes are respectively connected to the output terminal of the main power supply circuit breaker through six branch circuit breakers 4. Each maintenance power box is equipped with a primary main circuit consisting of four feeder circuits. The outlet terminals of the four feeder circuits are respectively connected to four power supply sockets 5 for plugging temporary power plugs (not shown in the figure) during maintenance. Each feeder circuit is equipped with a leakage protection switch 6 with leakage and overload protection functions and a control contactor 7 that can be remotely controlled to engage / disengage. The control contactor is connected to a secondary control circuit.

[0023] Each of the secondary line control circuits is equipped with a corresponding WiFi switch 8, enabling remote power supply and timed power cut-off of the control contactors on each feeder circuit via a mobile app. By controlling the four WiFi switches via the mobile app, the secondary line control circuit can control the control contactors of the corresponding four feeder circuits inside the maintenance power supply box to engage or disengage, thereby enabling power supply and shutdown operations for temporary electrical equipment. Simultaneously, a timed power cut-off period can be set via the mobile app; when the temporary power usage time reaches the set time, the power supply to the feeder circuit's socket will be automatically cut off.

[0024] Four manually operable fuses 9 are installed beside the four WiFi circuit breakers, corresponding to the bypass circuits, to provide emergency power in case of WiFi circuit breaker failure. The fuses are connected in parallel with the WiFi circuit breakers. If the WiFi circuit breaker fails and cannot automatically control the feeder circuit to supply power, but temporary electrical equipment urgently needs power, a professional electrician can operate the fuses on-site after obtaining temporary power permits, manually engaging the control contactor of the corresponding feeder circuit to provide emergency power to the corresponding power socket.

[0025] The temporary power plug is connected to one end of a temporary cable, and the other end of the temporary cable is connected to the temporary electrical equipment. The temporary power plug is a special aviation plug that is calculated to meet the load current requirements of the temporary electrical equipment and is compatible with the power supply socket of the maintenance power supply box.

[0026] The maintenance power supply box is an explosion-proof power supply box, and each of the power supply sockets is installed on the bottom outer side of the maintenance power supply box. The bottom of the maintenance power supply box has mounting holes corresponding to the number of power supply sockets, and the power supply sockets are securely installed below the corresponding mounting holes by sealing cable sleeves; the power supply sockets and temporary power plugs are explosion-proof aviation sockets and plugs.

[0027] Each of the secondary line control circuits is also equipped with a power switch for manually closing / disconnecting its control power supply; the front panel of the maintenance power supply box is equipped with a switch knob 10 corresponding to each of the power switches, that is, the power switch is a rotary circuit breaker.

[0028] The front panel of the maintenance power supply box is also equipped with a main power indicator 11 for indicating the power on / off status of the incoming power supply of the maintenance power supply box and branch circuit indicator 12 for indicating the power on / off status of the outgoing power supply of each feeder circuit. All indicator lights are intrinsically safe LED indicator lights.

[0029] Example 2

[0030] The difference from Embodiment 1 is that the maintenance power supply box is a non-explosion-proof ordinary power supply box, the power supply socket and temporary power plug can be non-explosion-proof aviation sockets and plugs, and the main power indicator and each branch circuit indicator can be ordinary LED indicator.

[0031] This utility model provides an intelligent control power supply device for maintenance power boxes. Users can scan the QR code on the WiFi switch with their mobile phone, download and install the corresponding mobile app, and then connect to the WiFi switch via WiFi to control its on / off state. This control, through secondary wiring, activates or deactivates the contactors in the corresponding circuits within the maintenance box, enabling power supply to and from temporary equipment. (Before powering on the maintenance box, the electrician has already closed the circuit breakers for each branch circuit, and the user inserts the dedicated plug for the electrical load into the corresponding numbered socket in the maintenance box.) The main power control box also contains a bypass secondary wiring control circuit for the WiFi switch. If the WiFi switch fails and power to the maintenance box is urgently needed, the electrician can manually close the corresponding fuse and power on via the bypass secondary wiring control circuit. Furthermore, a timed power-off period can be set via the mobile app; the power will automatically cut off after the set time. This power supply device enables rapid power supply and timed power outages, saving manpower and improving work efficiency. It also eliminates the safety risks associated with frequent connection and disconnection of temporary power lines and power outage operations.

[0032] The technical solution of this utility model is not limited to the specific embodiments described above. Without departing from the scope and spirit of the described embodiments, many modifications and changes will be obvious to those skilled in the art. Any technical modifications made within the spirit and principles of this utility model shall fall within the protection scope of this utility model.

Claims

1. A smart control power supply device for maintenance power supply boxes, comprising a main power control box connected to the output end of a substation, and a plurality of maintenance power supply boxes branching off from the main power control box, characterized in that: The main power control box is equipped with a main power circuit breaker at its inlet. The input terminals of each maintenance power supply box are connected to the output terminal of the main power circuit breaker via branch circuit breakers. Each maintenance power supply box has multiple feeder circuits. The output terminal of each feeder circuit is connected to a power socket for plugging in temporary power plugs during maintenance. Each feeder circuit is equipped with a leakage current protection switch with leakage and overload protection functions, as well as a control contactor that can be remotely controlled to engage / disengage. The control contactor is connected to a secondary line control circuit.

2. The intelligent control power supply device for maintenance power supply box according to claim 1, characterized in that: Each of the secondary line control circuits is equipped with a corresponding WiFi switch, which enables remote power supply and timed power cut-off of the control contactors on each feeder circuit via a mobile APP.

3. The intelligent control power supply device for maintenance power supply boxes according to claim 2, characterized in that: Each of the WiFi circuit breakers is also provided with a bypass fuse that can be manually closed / opened on one side, for emergency power supply in case of a WiFi circuit breaker failure.

4. The intelligent control power supply device for maintenance power supply box according to claim 1, characterized in that: Each of the secondary line control circuits is also equipped with a power switch for manually closing / disconnecting its control power supply.

5. The intelligent control power supply device for maintenance power supply box according to claim 4, characterized in that: The front panel of the maintenance power supply box is equipped with switch knobs corresponding to each of the power switches.

6. The intelligent control power supply device for maintenance power supply box according to claim 5, characterized in that: The front panel of the maintenance power supply box is also equipped with a main power indicator light for indicating the on / off status of the power supply at the incoming end of the maintenance power supply box, and branch circuit indicator lights for indicating the on / off status of the power supply at the outgoing end of each feeder circuit.

7. The intelligent control power supply device for maintenance power supply box according to claim 1, characterized in that: Each of the aforementioned power supply sockets is installed at the bottom of the maintenance power supply box.

8. The intelligent control power supply device for maintenance power supply box according to claim 6, characterized in that: The temporary power plug is connected to the temporary power equipment via a temporary cable.

Images