Power grid maintenance identification device

Abstract

The utility model belongs to the field of power grid maintenance, and particularly provides a power grid maintenance identification device, which comprises a connecting unit and a grounding wire, when the connecting unit is hung on a cable, a conductor arranged on the connecting unit is connected with the grounding wire; the conductive elastic sheet is fixed on the connecting unit, and when the connecting unit is hung on the cable, the conductive elastic sheet is connected with the cable; the detection unit is fixed on the connection unit and used for detecting whether current passes through, and the conductive elastic sheet is sequentially connected with the detection unit, the wire and the conductor. The utility model has the advantages of intuition and the like.

Description

Technical Field

[0001] This utility model relates to power grid maintenance, and in particular to a power grid maintenance identification device. Background Technology

[0002] When the power grid needs maintenance, the power is first cut off on the line to be maintained before the maintenance operation is carried out. However, there will still be residual voltage on the transmission line after the power is cut off (at this time, the transmission line after the power is cut off is equivalent to a capacitor). If the maintenance personnel operate directly, there is a risk of electric shock. Therefore, after confirming the power is cut off, the cable needs to be grounded to release the residual current in the cable to the ground. In addition, the operation process needs to be kept in a grounded state to prevent accidental power-on from causing injury to the operators.

[0003] The existing method involves hanging a grounding rod on the cable, with the grounding rod connected to the ground via a conductor to achieve grounding. The drawback of this method is that:

[0004] 1. It is impossible to confirm whether the grounding rod is in full contact with the cable and whether the current is effectively released.

[0005] 2. Regulatory personnel are unable to confirm whether on-site operators have grounded the cables as required, or grounding failures during maintenance, etc. Summary of the Invention

[0006] To address the shortcomings of the existing technical solutions, this utility model provides a power grid maintenance identification device.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A power grid maintenance identification device includes a connection unit, an insulating part, and a grounding wire. When the connection unit is hung on a cable, a conductor on the connection unit is connected to the grounding wire. The identification device further includes:

[0009] A conductive spring is fixed on the connecting unit. When the connecting unit is hung on the cable, the conductive spring connects to the cable.

[0010] The detection unit is fixed on the connection unit and is used to detect whether current is passing through it. The conductive spring is connected to the detection unit, the wire and the conductor in sequence.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. Real-time detection of whether the cable is in good contact with the conductor, and provides intuitive signal prompts, such as a green light when there is good contact and a red light when there is a disconnection, to ensure the safety of operators;

[0013] 2. Supervisory personnel can use color-coded indicators to monitor whether on-site personnel are operating in accordance with regulations. Attached Figure Description

[0014] The disclosure of this utility model will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are merely illustrative of the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of the identification device of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the identification device of this utility model. Detailed Implementation

[0017] Figures 1-2 The following description illustrates optional embodiments of the present invention to teach those skilled in the art how to implement and reproduce it. For the purpose of teaching the technical solutions of the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art should understand that variations or substitutions derived from these embodiments will be within the scope of the present invention. Those skilled in the art should understand that the following features can be combined in various ways to form multiple variations of the present invention. Therefore, the present invention is not limited to the following optional embodiments, but is defined only by the claims and their equivalents.

[0018] Example 1.

[0019] The power grid maintenance identification device of Embodiment 1 of this utility model, such as Figure 1 As shown, the identification device includes:

[0020] The connection unit 11, the insulating part, and the grounding wire are connected together. When the maintenance personnel hold the insulating part, they hang the connection unit 11 on the cable 21, and the conductor on the connection unit 11 is connected to the grounding wire.

[0021] A conductive spring 41 is fixed on the connecting unit 11. When the connecting unit 11 is hung on the cable 21, the conductive spring 41 connects to the cable 21.

[0022] The detection unit 44 is fixed on the connection unit 11 and is used to detect whether current is passing through. The conductive spring 41 is connected to the detection unit 44, the wire and the conductor in sequence.

[0023] like Figure 2As shown, in order to ensure that the cable 21 contacts the conductive spring 41, the upper end of the connecting unit 11 is a bent portion 111, and the inner walls of the two wings of the bent portion 111 are provided with guide modules 21. When the cable moves relative to the guide modules, the conductive spring 41 contacts the cable 21.

[0024] like Figure 2 As shown, in order to ensure that the cable 21 contacts the conductor, the guide module further includes two arc-shaped springs 31, which are disposed on the inner wall. From bottom to top, the distance between the two arc-shaped springs 31 first decreases and then increases; the cable 21 moves along the two arc-shaped springs 31 and then gets stuck between the two arc-shaped springs 31 and the conductor.

[0025] like Figure 2 As shown, the base of the conductive spring 41 is fixed to and electrically connected to the PCB board 42. The PCB board 42 is fixed to the connection unit 44 by the fixing structure 43. The PCB board 42 is electrically connected to the detection unit 44 and is insulated from the connection part 11.

[0026] To further indicate whether the cable 21 is grounded, the identification device also includes a prompting unit for providing prompts when a loop is formed and when a loop cannot be formed, wherein the loop is electrically conductive between the cable 21, the conductive spring 41, the detection unit 44, the conductor, and the cable 21.

[0027] To visually indicate whether the cable is grounded, the indicator unit further includes a green LED and a red LED. The green LED is lit when the cable 21 is electrically connected to the conductor to form a circuit, and the red LED is lit when the cable 21 is disconnected from the conductor and cannot form a circuit.

[0028] Example 2.

[0029] Application example of the power grid maintenance identification device according to Embodiment 1 of this utility model.

[0030] In this application example, such as Figure 1 As shown, the upper end of the connecting unit 11 is a bent portion 111, and a conductor is disposed at the highest point of the inner wall of the bent portion 11, with the conductor connected to the grounding wire. The entire connecting unit 11 is conductive and functions as a conductor.

[0031] like Figure 2As shown, the guide module uses arc-shaped spring pieces 31, which are respectively disposed on the inner walls of the two wings of the bent portion 111. From bottom to top, the distance between the two arc-shaped spring pieces 31 first decreases to 0 and then increases. When the cable 21 moves relative to the two arc-shaped spring pieces 31, the cable 21 pushes away the two arc-shaped spring pieces 31, and the cable 21 is clamped between the two arc-shaped spring pieces 31 at the increased distance and the bent portion 111, so that the cable 21 comes into contact with the conductor.

[0032] like Figures 1-2 As shown, the root of the arc-shaped conductive spring 41 is fixed to the PCB board 42, and the PCB board 42 is fixed to the connecting unit 11 through the fixing structure 43, and remains insulated between the connecting units 11. When the cable 21 moves relative to the two arc-shaped springs 31, the conductive spring 41 contacts the cable 21 and applies elastic force to the cable 21.

[0033] The detection unit 44 uses an ammeter, which is fixed on the connection unit 11, and its two ends are connected to the PCB board 42 and the conductor respectively through electrical connection wires 45.

[0034] The indicator unit includes a green LED and a red LED. The green LED illuminates when the cable 21 is electrically connected to the conductor to form a circuit (electrical continuity between the cable 21, conductive spring 41, detection unit 44, conductor, and cable 21). The red LED illuminates when the cable 21 is disconnected from the conductor and a circuit cannot be formed. This provides a visual indication of whether the cable 21 is electrically connected to the conductor.

[0035] The identification device in this embodiment operates as follows:

[0036] The maintenance personnel connected the grounding wire to the earth.

[0037] The bent portion 111 of the connecting unit 11 is placed on the cable 21. The cable 21 is between two arc-shaped springs 31. It is pulled downward, causing the cable 21 to push away the two arc-shaped springs 31 with a smaller gap and contact the conductive spring 41. Then the cable 21 enters between the two arc-shaped springs 31 with a larger gap and is squeezed between the conductive spring 41, the arc-shaped spring 31 and the conductor.

[0038] If the conductor and cable 21 are electrically connected, a loop is formed between cable 21, conductive spring 41, PCB board 42, detection unit 44, conductor, and cable 21. The detection unit 44 detects the current, thus confirming that cable 21, conductor, and grounding wire are connected, and cable 21 is grounded. At this time, the green LED lights up.

[0039] If the detection unit 44 does not detect a current signal, the circuit cannot be formed, there is no connection between cable 21 and the conductor, and cable 21 is not grounded. At this time, the red LED lights up.

[0040] Example 3.

[0041] The application example of the power grid maintenance identification device according to Embodiment 1 of this utility model differs from Embodiment 2 in that:

[0042] The prompting unit also includes a voice prompt module, which issues a voice prompt indicating successful grounding when a circuit is confirmed to be formed and cable 21 is grounded. If a circuit cannot be formed and cable 21 is not grounded, a voice prompt indicating grounding failure and caution is issued.

Claims

1. A power grid maintenance identification device, comprising a connection unit, an insulating portion, and a grounding wire, wherein when the connection unit is hung on a cable, a conductor disposed on the connection unit is connected to the grounding wire; characterized in that, The identification device further includes: A conductive spring is fixed on the connecting unit. When the connecting unit is hung on the cable, the conductive spring connects to the cable. The detection unit is fixed on the connection unit and is used to detect whether current is passing through it. The conductive spring is connected to the detection unit, the wire and the conductor in sequence.

2. The power grid maintenance identification device according to claim 1, characterized in that, The upper end of the connecting unit is a bent section, and the inner walls of the two wings of the bent section are provided with guide modules. When the cable moves relative to the guide modules, the conductive spring contacts the cable.

3. The power grid maintenance identification device according to claim 2, characterized in that, The guiding module includes two arc-shaped springs disposed on the inner wall. From bottom to top, the distance between the two arc-shaped springs first decreases and then increases. The cable moves along the two arc-shaped springs and then gets stuck between the two arc-shaped springs and the conductor.

4. The power grid maintenance identification device according to claim 1, characterized in that, The base of the conductive spring is fixed to the PCB board and electrically connected. The PCB board is fixed to the connection unit by a fixing structure and is electrically connected to the detection unit.

5. The power grid maintenance identification device according to claim 4, characterized in that, The connecting unit serves as the conductor, and the PCB board and the connecting unit are insulated from each other.

6. The power grid maintenance identification device according to claim 1, characterized in that, The identification device also includes a prompting unit for providing prompts when a loop is formed and when a loop cannot be formed, wherein the loop is an electrical connection between the cable, conductive spring, detection unit, conductor and cable.

7. The power grid maintenance identification device according to claim 6, characterized in that, The prompting unit includes a green LED and a red LED. The green LED is lit when the cable is electrically connected to the conductor to form a circuit, and the red LED is lit when the cable is disconnected from the conductor and a circuit cannot be formed.

8. The power grid maintenance identification device according to claim 1, characterized in that, The detection unit uses an ammeter.

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