CN202840449U - Tower shunt wire drawing and copper grounding structure - Google Patents

Abstract

The utility model provides a tower shunt wire drawing and copper grounding structure. The integrated application of the tower shunt wire drawing and the copper grounding can be used to reduce the lightning stroke trip out rate effectively, and the costs are low, the installation requirements are low, and the structure provided in the utility model is especially suitable for being installed in mountainous areas and other places having complicated weather. In order to achieve the above mentioned effect, the tower shunt wire drawing and copper grounding structure comprises a ground wire cross arm disposed on a top end of the tower and a plurality of copper grounding devices embedded in the periphery of the tower. The ground wire cross arm is provided with a plurality of wire drawing wire hanging holes, in each of which is fixedly disposed a good conductor shunt drawn wire. The other ends of the good conductor shunt drawn wires are connected with the copper grounding devices. By adopting the above mentioned technical scheme, the tower shunt wire drawing and copper grounding structure has advantages of improving the shunt effect, reducing the impedance, reducing the shielding failure trip out rate of the tower and the lead, reducing the grounding resistance, reducing the back strike trip out rate of the tower and the lead, and improving the reliability of the grounding system by using the copper grounding.

Description

Tower shunt cable and copper grounding structure

technical field

The utility model relates to a protection device for electric industry, in particular to a tower shunting pull wire and a copper grounding structure.

Background technique

The tower is one of the basic equipment in the overhead power distribution line. Because the tower is high, it is very easy to cause lightning strikes. Lightning strikes are a major cause of damage to power supply equipment. In prior art poles and towers, a combination of insulator strings, overhead ground wires and jumper insulator strings is usually used for lightning protection. However, the climate is complex and the power supply conditions are poor in transmission lines in mountainous microclimate areas. Therefore, even though many lightning protection measures have been taken in the prior art, the rate of lightning strikes still remains high. In this regard, we need to improve the existing tower structure to find a more effective lightning protection structure, and we need to minimize the cost here.

Utility model content

The purpose of the utility model is to provide a pole tower shunt cable and copper grounding structure. The comprehensive application of the pole tower shunt cable and copper grounding can effectively reduce the lightning trip rate, low cost, and low installation requirements, especially suitable for installation in mountainous areas and other places with complex weather.

In order to achieve the above effect, the utility model tower shunt stay wire and copper grounding structure include a ground wire crossarm installed on the top of the tower and a plurality of copper grounding devices buried around the tower. The ground wire crossarm is provided with a plurality of Pull wire hanging holes, each of which is fixed with a good conductor shunt pull wire, the other end of the good conductor shunt pull wire is connected to a copper grounding device, and the distance between the good conductor shunt pull wire and the ground is 55 -75 degree included angle.

Preferably, the number of the copper grounding devices is 2, and the ground wire cross-arm is provided with 4 wire hanging holes, and the wire hanging holes are respectively arranged on both sides of the ground wire cross-arm, and a plurality of wires on each side Good conductor shunt cables are arranged in parallel, and form an angle of 60 degrees with the ground. Such a structure is used in occasions where a large number of copper grounding devices cannot be installed on a small site. Due to the small site, the copper grounding device is relatively close to the pole tower. Multiple good conductor shunt cables are arranged in parallel and at an angle of 60 degrees to the ground to achieve the best effect. When struck by lightning, the current is quickly shunted, and it is not easy to be damaged due to its own tension at ordinary times. damage.

Preferably, the number of the copper grounding devices is 4, and the ground wire cross-arm is provided with 16 wire hanging holes, and the 16 good conductor shunt wires between the wire hanging holes and the copper grounding devices are mutually different In contact with the ground at an angle of 55 degrees. Such a structure is suitable for the occasions where the site is called wide, or where the requirements for lightning protection are very high. The good conductor shunt cable and the ground form an angle of 55 degrees, which is conducive to the layout of the copper grounding device on the ground.

Preferably, the copper grounding device adopts a copper-plated ground rod, that is, the inner core of the copper ground device is hard steel, and the outer layer of the steel is plated with a layer of copper, and the length of the copper-plated ground rod is not less than 1.5 meters. Since the copper grounding device needs to be durable and the cost should be kept as low as possible, this structure is the most practical and suitable for mass production.

Preferably, the outer side of the good conductor shunt cable is covered with a corrosion-resistant insulating layer. Such a structure ensures that the service life of the good conductor shunt stay wire set in the field is long enough.

Due to the adoption of the technical scheme, the structure of the pole tower shunt cable and copper grounding can not only effectively improve the shunt effect, reduce the impedance, reduce the shielding tripping rate of the tower and the wire, but also reduce the grounding resistance, reduce the counterattack tripping rate of the tower and the wire, Copper grounding can effectively improve the reliability of the grounding system.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is a schematic diagram of the front structure of the pole tower shunt cable and the copper grounding structure of the utility model.

Detailed ways

As shown in Figure 1, the utility model tower shunt stay wire and copper grounding structure is characterized in that it includes a ground wire cross arm 2 installed on the top of the pole tower 1 and a plurality of copper grounding devices 3 buried around the pole tower 1, the ground The cross arm 2 is provided with a plurality of wire hanging holes, each of which is fixed with a good conductor shunt pull wire 4, and the other end of the good conductor shunt pull wire 4 is connected to a copper grounding device 3, An included angle of 55-75 degrees is formed between the good conductor shunt stay wire 4 and the ground.

Embodiment 1: In general mountainous areas, the number of copper grounding devices 3 is 2, and the ground wire cross arm 2 is provided with 4 guy wire hanging holes. A plurality of good conductor shunt stay wires 4 on each side are arranged in parallel, and form an angle of 60 degrees with the ground. The number of such copper grounding devices 3 is relatively small, but occupies a small area and is convenient for installation and maintenance.

Embodiment 2: On a relatively wide site, the number of the copper grounding device 3 is 4, and the ground wire cross arm 2 is provided with 16 wire hanging holes, between the wire hanging holes and the copper grounding device 3 The 16 good conductor shunt stay wires 4 are not in contact with each other, and form an angle of 55 degrees with the ground. Such a structure can also be installed at a relatively important position of the tower 1 .

In order to ensure safe and reliable performance during use, the copper grounding device 3 adopts a copper-plated grounding rod, that is, the inner core of the copper grounding device 3 is hard steel, and the outer layer of steel is coated with a layer of copper. The length of the copper-plated grounding rod is not less than 1.5 rice. It can reduce the grounding resistance, reduce the counter-attack tripping rate of towers and wires, and copper grounding can effectively improve the reliability of the grounding system.

The outer side of the good conductor shunt backguy 4 is covered with a corrosion-resistant insulating layer. In this way, the good conductor shunt guy wire 4 will not age and corrode rapidly even in the harsh climate in mountainous areas.

The above is only a specific embodiment of the utility model, but the structural features of the utility model are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the utility model are covered by the utility model. In the scope of the new patent.

Claims (5)

1. Tower shunt cable and copper grounding structure, characterized in that it includes a ground wire crossarm (2) installed on the top of the tower (1) and a plurality of copper grounding devices (3) buried around the tower (1). The ground wire cross arm (2) is provided with a plurality of pull wire hanging holes, and a good conductor shunt pull wire (4) is fixed in each pull wire hanger hole, and the other end of the good conductor shunt pull wire (4) is connected to the connection To a copper grounding device (3), the angle between the good conductor shunt stay wire (4) and the ground is 55-75 degrees. 2. The tower shunt cable and copper grounding structure according to claim 1, characterized in that: the number of the copper grounding device (3) is 2, and the ground wire cross arm (2) is provided with 4 cable hangers Wire holes, the wire hanging holes are arranged on both sides of the ground wire cross arm (2), and a plurality of good conductor shunt wires (4) on each side are arranged in parallel, and form an angle of 60 degrees with the ground. 3. The pole tower shunt stay wire and copper grounding structure according to claim 1, characterized in that: the number of the copper grounding devices (3) is 4, and the ground wire cross arm (2) is provided with 16 stay wire hangers The 16 good conductor shunt stay wires (4) between the wire hole, the wire hanging hole and the copper grounding device (3) are not in contact with each other, and form an angle of 55 degrees with the ground. 4. According to any one of claims 1-3, the shunt cable and copper grounding structure of the tower is characterized in that: the copper grounding device (3) adopts a copper-plated grounding rod, that is, the inner core of the copper grounding device (3) is Hard steel, the outer layer of the steel is plated with a layer of copper, and the length of the copper-plated grounding rod is not less than 1.5 meters. 5. The tower shunt cable and copper grounding structure according to any one of claims 1-3, characterized in that: the outer side of the good conductor shunt cable (4) is covered with a corrosion-resistant insulating layer.

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