CN202586156U - Tool for replacing overvoltage protector in distribution line in live-line manner - Google Patents

Abstract

The utility model relates to a tool for replacing an overvoltage protector in a distribution line in a live-line manner. The distribution line comprises a lead, a cross arm, an insulator, and an overvoltage protector, wherein the overvoltage protector and the insulator are parallelly connected and arranged between the lead and the cross arm. The tool comprises an insulating support and an insulating operation rod, wherein the insulating support comprises a support body and a fastening member; the lower end of the support body is fixed upon the line cross arm via the fastening member, with the upper end thereof supporting the lead; the insulating operation rod comprises a chuck, a fastening bolt, an upper cover, and a lower cover; one end of the chuck is fixed after passing through the upper cover; the lower cover is connected with the upper cover via the fastening bolt; and the chuck clamps the overvoltage protector after the support body jacks up the lead. Compared with the prior art, the tool of the utility model ensures live-line operation, reduces the power-off time, and increases the power supply amount.

Description

Tools for live replacement of overvoltage protective devices on distribution lines

technical field

The utility model relates to a tool in the field of electrical construction, in particular to a tool for live replacement of an overvoltage protection device for a power distribution line.

Background technique

Nowadays, as the overhead distribution lines are gradually insulated, it solves the corridor and safety problems that bare wires cannot solve, but the problem of lightning disconnection is very prominent. The overvoltage protection device is a very effective device to avoid lightning tripping and lightning disconnection of the overhead insulated conductors of the distribution network. However, the device will inevitably fail and be damaged during use. At present, how to replace the damaged There is no better solution for the overvoltage protection device and how to keep the wires in contact with other substances in the workspace during the replacement process.

Utility model content

The purpose of this utility model is to provide a tool for live replacement of overvoltage protection devices on distribution lines that can ensure live work, reduce power outage time, and increase power supply in order to overcome the above-mentioned defects in the prior art.

The purpose of this utility model can be achieved through the following technical solutions:

A tool for replacing an overvoltage protection device on a power distribution line. The distribution line includes a wire, a cross arm, an insulator, and an overvoltage protection device. The overvoltage protection device and the insulator are connected in parallel between the wire and the cross arm. Between the bearings, it is characterized in that the tool includes an insulating bracket and an insulating operating rod, the insulating bracket includes a bracket body and a fastening member, and the lower end of the bracket body is fixed on the line cross arm through the fastening member, The upper end withstands the wire; the insulating operation rod includes a chuck, a fastening bolt, an upper cover and a lower cover, one end of the chuck passes through the upper cover and is fixed, and the lower cover is connected to the upper cover by the fastening bolt To connect, after the support body lifts up the wire, the clip clamps the overvoltage protection device.

The fastening component includes a horizontal fastening component and a vertical fastening component, and the horizontal fastening component and the vertical fastening component respectively fix the bracket body on the line cross-arm from the horizontal and vertical directions.

The longitudinal section of the bracket body is a right-angled trapezoid.

The insulating operation rod also includes a screwdriver head, which is arranged at the junction of the upper cover and the lower cover.

Compared with the prior art, the utility model improves the operating reliability of the equipment, reduces the number of customer power outages, shortens the time of customer power outages, and at the same time increases the electricity sales of power supply enterprises, which is of great significance.

Description of drawings

Fig. 1 is the structural representation of the utility model insulation support;

Fig. 2 is a structural schematic diagram of the insulating operating rod of the present invention.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

This embodiment is mainly used for ground potential work, and the purpose of replacing the overvoltage protection device in the 10kV power distribution line is achieved by lifting the wire. As shown in Figure 1, a tool for live replacement of overvoltage protection devices for distribution lines, overvoltage protection devices 25 and insulators are installed in parallel between the wire and the cross arm 14, the tool includes an insulating bracket and an insulating operation Rod, the insulating bracket includes a bracket body 11 and a fastening member, the lower end of the bracket body 11 is fixed on the line cross-arm 14 through the fastening member, and the upper end withstands the wire; the insulating operation rod includes a chuck 21 , fastening bolts, upper cover 22 and lower cover 23, one end of the chuck 21 passes through the upper cover 22 and is fixed, the lower cover 23 is connected with the upper cover 22 by fastening bolts, the support body 11 After the wire is lifted, the clamp 21 clamps the overvoltage protection device 25 .

The fastening member includes a horizontal fastening component 12 and a vertical fastening component 13 , and the horizontal fastening component 12 and the vertical fastening component 13 respectively fix the support body 11 on the line cross-arm 14 from the horizontal and vertical directions. The insulating operation rod also includes a screwdriver head 24, which is arranged at the junction of the upper cover and the lower cover.

The specific work steps include:

1) The first insulating operation rod covers both sides of the A-phase and B-phase conductors, and the insulators of the A-phase and B-phase with insulating covers;

2) The bracket body 11 is installed at an appropriate position of the cross arm 14;

3) The first insulation operation rod removes the wires on both sides of the A-phase overvoltage protection device 25 to be replaced and the insulation cover on the insulator;

4) The first insulating operating rod hooks the wire on the bracket body 11, and makes it slightly pull up;

5) The second insulating operating rod clamps the overvoltage protection device 25 to be replaced, and the first insulating operating rod unscrews the screw of the insulator;

6) Pull the wire together with the insulator as a whole and separate from the surface of the cross arm 14, and replace the overvoltage protection device 25;

7) Slowly put down the wire together with the insulator, slightly adjust the wire with the first insulating operating rod, place it in the round hole of the cross arm 14 together with the newly replaced overvoltage protection device 25, and tighten the screw of the insulator with the second insulating operating rod;

8) The first insulation operation rod covers both sides of the A-phase wire and the insulator with an insulation cover again, and the bracket body 11 is removed;

9) The second insulating operation rod removes the insulating covers at all wires and insulators of phase A and phase B, and the whole replacement work is completed.

Claims (4)

1. instrument that is used for distribution line charged for replacement overvoltage protection; Described distribution line comprises lead, cross-arm, insulator and overvoltage protection, and described overvoltage protection is parallelly connected with insulator to be located between lead and the cross-arm, it is characterized in that; Described instrument comprises insulating support and insulation hook stick; Described insulating support comprises rack body and clamp structure, and described rack body lower end is fixed on the circuit cross-arm through clamp structure, and lead is withstood in the upper end; Described insulation hook stick comprises chuck, fastening bolt, loam cake and lower cover; Described chuck one end is fixed after passing loam cake; Described lower cover is connected with loam cake through fastening bolt, and behind the described rack body jack-up lead, described chuck is clamped overvoltage protection.

2. a kind of instrument that is used for distribution line charged for replacement overvoltage protection according to claim 1; It is characterized in that; Described clamp structure comprises horizontal fastening assembly and vertical fastening assembly, and described horizontal fastening assembly is fixed on rack body on the circuit cross-arm from horizontal and vertical respectively with vertical fastening assembly.

3. a kind of instrument that is used for distribution line charged for replacement overvoltage protection according to claim 1 is characterized in that the longitudinal section of described rack body is a right-angled trapezium.

4. a kind of instrument that is used for distribution line charged for replacement overvoltage protection according to claim 1 is characterized in that, the insulation hook stick also comprises driver bit, and this driver bit is located at the junction of loam cake and lower cover.

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