CN204680772U - A kind of portable stretchable high-voltage earthing line apparatus - Google Patents

Abstract

The utility model discloses a portable telescopic high-voltage grounding wire device, which is composed of a wire clip, an insulating operating rod and a grounding wire. The insulating operating rod is composed of four insulating telescopic rods with different diameters. The telescopic rod is hollow inside and has a small diameter. The telescopic rod is set inside the telescopic rod with a large diameter; the bottom and top of the telescopic rod are respectively provided with a positioning hole; the inside of the telescopic rod is provided with a U-shaped positioning shrapnel, and one end of the U-shaped positioning shrapnel is provided with a positioning bump ; The positioning bump is installed in the positioning hole; a wire clamp is installed on the top of the telescopic rod with the smallest diameter, and the wire clamp is connected with one end of the grounding wire. The utility model is suitable for maintenance tasks of electrical equipment with a voltage level of 220kV and below, which greatly reduces the workload of maintenance personnel carrying multiple high-voltage grounding wire devices at the same time, and also avoids frequent replacement of high-voltage grounding wires by maintenance personnel due to changes in maintenance tasks Probability of device occurrence. Compared with the existing portable high-voltage grounding wire device, the utility model is simpler and more practical, and is suitable for on-site operation.

Description

A portable telescopic high-voltage grounding wire device

technical field

The utility model belongs to the technical field of electric equipment maintenance grounding wires, in particular to a portable telescopic high-voltage grounding wire device.

Background technique

Substations are an integral part of power systems. With the rapid development of the power system, the number of substations has increased dramatically, and the workload of maintenance and repair of electrical equipment in substations is also increasing day by day. The high-voltage grounding wire device is one of the necessary tools when performing power outage maintenance on electrical equipment. The function of the high-voltage grounding wire device is to prevent the adjacent high-voltage lines or equipment from generating induced voltage on the power-off line or equipment, or the induced voltage that may be generated by power-off maintenance equipment or lines from causing harm to the human body. According to DL/T879-2004 "Portable Grounding and Grounding Short-Circuit Device for Live Work" and GB26164.1-2010 "Safety Work Regulations for Electric Industry", the length of the 10kV grounding wire insulation operating rod is 1 meter; the length of the 35kV grounding wire insulation operating rod is 1.5 meters; 110kV grounding wire insulation operating rod length 2 meters; 220kV grounding wire insulation operating rod length 2.5 meters. Therefore, the tool room of most substations is equipped with high-voltage grounding wire devices with different lengths of insulating operating rods, in order to prepare for the repair and maintenance of electrical equipment of different voltage levels. When repairing and maintaining 10kV and 35kV electrical equipment, it is relatively easy to carry the high-voltage grounding wire device; when performing maintenance on 110kV and 220kV electrical equipment, it is very inconvenient to carry the high-voltage grounding wire device. In addition, when the maintenance personnel have just completed the maintenance task of electrical equipment of one voltage level and are told to handle the maintenance task of electrical equipment of another voltage level, they often need to return to the tool room to replace a high-voltage grounding wire device, and then To handle maintenance tasks. As a result, the work is extremely passive and the execution efficiency is low. In view of the above situation, it is necessary to develop a portable high-voltage grounding wire device, which can adapt to the repair and maintenance work of electrical equipment of different voltage levels, and improve the work execution efficiency of maintenance personnel.

Contents of the invention

The technical problem to be solved by the utility model is to provide a high-voltage grounding wire device that is easy to carry and can be stretched and adjusted to adjust the length of the insulating operating rod, so as to improve the work execution efficiency of maintenance personnel when handling electrical equipment maintenance tasks, and reduce the work of maintenance personnel to carry high-voltage grounding wires. strength.

The utility model solves the above technical problems through the following technical solutions:

A portable telescopic high-voltage grounding wire device, which is composed of a wire clamp, an insulating operating rod and a grounding wire. It is characterized in that the insulating operating rod is composed of four insulating telescopic rods with different diameters. The telescopic rod is set inside the telescopic rod with a large diameter; the bottom and the top of the telescopic rod are respectively provided with a positioning hole; the inside of the telescopic rod is provided with a U-shaped positioning shrapnel, and one end of the U-shaped positioning shrapnel is provided with a positioning bump; The positioning bump is installed in the positioning hole; a wire clamp is installed on the top of the telescopic rod with the smallest diameter, and the wire clamp is connected with one end of the grounding wire.

As an optimization, the telescopic rod has a thin top and thick bottom structure, and its cross-section is an isosceles trapezoid;

As an optimization, the wire clamp and the insulating operating rod are screwed together through the threaded opening, which facilitates the replacement of the wire clamp;

As an optimization, a spring compression device is provided inside the wire clamp, and the spring compression device is composed of a double-tongue bayonet and a spring. The bayonet is arc-shaped, and the two bayonets are pressed against each other by a spring; it is easy to operate , can effectively ensure that the wire clip locks the wire, and avoid the accident that the wire clip falls from the wire due to external force;

As an optimization, the first end of the grounding wire is a double-eye copper terminal, and the end is a single-eye grounding terminal; the double-eye copper terminal is fixed on the wire clamp by screws to facilitate the replacement of the grounding wire;

As an optimization, a handle is provided at the lower end of the insulating operating rod, and the outer layer of the handle is made of rubber material with stripes, which has high insulation strength and anti-skid function.

The utility model provides a portable telescopic high-voltage grounding wire device, which is suitable for the maintenance task of electrical equipment with a voltage level of 220kV and below. The line device is integrated into a portable high-voltage grounding line device, which greatly reduces the workload of maintenance personnel to carry multiple high-voltage grounding line devices at the same time, and also avoids the probability that maintenance personnel frequently replace high-voltage grounding line devices due to changes in maintenance tasks . Compared with the existing portable high-voltage grounding wire device, the utility model is simpler and more practical, and is suitable for on-site operation.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is a partial sectional view of the utility model embodiment;

Among them, 1 is the wire clip; 2 is the bayonet; 21 is the spring; 3 is the positioning shrapnel; 31 is the positioning bump; 4 is the insulating operating rod; 41 is the positioning hole; Terminal; 8 is a ground wire; 9 is a ground terminal.

Detailed ways

Below in conjunction with accompanying drawing and embodiment further set forth the content of the present utility model.

A portable telescopic high-voltage grounding wire device, which is composed of a wire clamp 1, an insulating operating rod 4 and a grounding wire 8. The insulating operating rod 4 is composed of four insulating telescopic rods with different diameters, and the telescopic rod with the largest diameter is 1 The length of the other telescopic rods is 0.5 meters; the telescopic rod has a thin upper and thicker structure, and its cross-section is an isosceles trapezoid; A positioning hole 41 is respectively provided at the bottom and top of the telescopic rod; a U-shaped positioning shrapnel 3 is provided inside the telescopic rod, and a positioning bump 31 is provided at one end of the U-shaped positioning shrapnel; the positioning bump 31 is installed in the positioning hole 41; the minimum The top of the diameter expansion rod is screwed into the wire clamp 1 through the threaded opening to facilitate the replacement of the wire clamp 1. The wire clamp is made of metal conductive material; the wire clamp 1 is provided with a spring compression device, which is composed of two Tongue bayonet 2 and spring 21, the bayonet 2 is arc-shaped, and the two bayonets 2 are pressed against each other by the spring 21; easy to operate, can effectively ensure that the wire clip 1 locks the wire, and prevent the wire clip 1 from being damaged due to external force. The unexpected situation that falls from the wire occurs; the wire clamp 1 is connected to one end of the grounding wire 8; the head end of the grounding wire 8 is a double-eye copper terminal 7, and the end is a single-eye grounding terminal 9; the double-eye copper terminal 7 is screwed 6 is fixed on the wire clamp 1 to facilitate the replacement of the grounding wire; the lower end of the insulating operating rod 4 is provided with a handle 5, and the outer layer of the handle 5 is made of rubber material with stripes, has high insulation strength and has anti-skid function.

When in use, according to the voltage level of the equipment to be overhauled, the insulating operating rod is pulled to the specified length, and the positioning bump 31 on the U-shaped positioning shrapnel 3 is stuck in the positioning holes 41 of the two telescopic rods, so that the insulating operating rod is stable. Connection; after rotating and installing the wire clamp 1 on the top of the insulating operating rod 4, use the screw 6 to pass through the double-eye copper terminal 7 to fix the grounding wire on the wire clamp 1; hold the wire clamp 1 on the insulating operating rod handle On the wire, connect the grounding wire monocular grounding terminal 9 on the three phase lines with the grounding wire to complete the grounding wire operation. After use, press the positioning bump 31 to break away from the positioning hole 41 at the top of the insulating operating rod, and then shrink the insulating operating rod. Shake, and then wrap the grounding wire on the insulating operating rod, that is, you can carry it with you.

The utility model has a simple structure and is suitable for maintenance tasks of electrical equipment with a voltage level of 220kV and below. The utility model integrates four portable high-voltage grounding wire devices with a length of 1 meter, 1.5 meters, 2 meters and 2.5 meters into a portable The high-voltage grounding wire device greatly reduces the workload of maintenance personnel carrying multiple high-voltage grounding wire devices at the same time, and also avoids the probability of frequent replacement of high-voltage grounding wire devices by maintenance personnel due to changes in maintenance tasks.

Claims (6)

1. A portable telescopic high-voltage grounding wire device, which is composed of a wire clamp, an insulating operating rod and a grounding wire, is characterized in that the insulating operating rod is composed of four insulating telescopic rods with different diameters, and the telescopic rods are hollow inside, with a diameter of The small telescopic rod is set inside the large-diameter telescopic rod; the bottom and top of the telescopic rod are respectively provided with a positioning hole; the inside of the telescopic rod is provided with a U-shaped positioning shrapnel, and a positioning protrusion is provided at one end of the U-shaped positioning shrapnel. point; the positioning bump is installed in the positioning hole; the top of the smallest diameter telescopic rod is equipped with a wire clamp, and the wire clamp is connected to one end of the grounding wire. 2. The portable telescopic high-voltage grounding wire device according to claim 1, wherein the telescopic rod has a thin top and a thick bottom, and its cross-section is an isosceles trapezoid. 3. The portable retractable high-voltage grounding wire device according to claim 1, wherein the wire clamp and the insulating operating rod are screwed together through a threaded opening. 4. The portable retractable high-voltage grounding wire device as claimed in claim 1, wherein a spring compression device is provided in the wire clamp, and the spring compression device is composed of a double-tongue bayonet and a spring, and the bayonet It is arc-shaped, and the two bayonets are pressed against each other by springs. 5. The portable retractable high-voltage grounding wire device according to claim 1, wherein the first end of the grounding wire is a double-eye copper terminal, and the end is a single-eye grounding terminal; the double-eye copper terminal is fixed on the wire clamp by screws. 6. The portable retractable high-voltage grounding wire device according to claim 1, wherein a handle is provided at the lower end of the insulating operating rod, and the outer layer of the handle is made of rubber material with stripes.