CN204012612U - A kind of lightning protection negative angle protective device - Google Patents

Abstract

The utility model relates to the technical field of power distribution line protection equipment, in particular to a lightning protection negative angle protection device. One end of the lightning-leading rod of the negative-angle protection device for lightning protection is fixedly connected to the cross-arm, and is arranged obliquely with the cross-arm, and a wire is laid on the cross-arm, and the height of the other end is higher than that of the wire, so that the lightning-leading rod protrudes , can play a role in attracting lightning in thunder and lightning weather, so that the wire can avoid being struck by lightning; the cross arm is connected to the grounding mechanism through the grounding down conductor, and the grounding mechanism is used to discharge the charge of lightning to the ground. The lightning protection negative angle protection device of the utility model is suitable for areas with high terrain, lightning-strike-prone areas and areas where lightning strikes are prone to occur. The lightning rod is used to attract lightning and lead it into the ground, so as to protect the wires or towers and reduce them being struck by lightning. The number of times in the middle, thereby effectively avoiding power supply interruption or danger, and the structure is simple, easy to install, no need to check and replace equipment frequently after one installation, and has a high reuse rate.

Description

A lightning protection negative angle protection device

technical field

The utility model relates to the technical field of power distribution line protection equipment, in particular to a lightning protection negative angle protection device.

Background technique

In the operation and maintenance of high and low voltage line equipment, it is very important to control the tripping rate of the line and reduce the tripping of the line. Especially in the thunderstorm-prone season in summer, the number of line trips caused by lightning accounts for a large proportion of the number of line trips throughout the year. How to effectively reduce the line fault tripping caused by thunderstorms in the thunderstorm season is the primary task of the current high and low voltage line equipment operation protection.

At present, the 10kV distribution line has a large number of line trips due to lightning, and the above-mentioned cases of line trips caused by lightning often occur in high-lying, lightning-strike-prone areas and areas prone to lightning strikes. In the prior art, lightning arresters are mostly installed on utility poles and towers in high-lying, lightning-strike-prone areas and areas where lightning strikes are prone to occur. However, in the current power grid line, every time a lightning arrester is added, it is necessary to carry out troubleshooting work on the hidden trouble of the corresponding place; and every time the lightning arrester undergoes successful lightning protection, its performance will be greatly reduced correspondingly. In order to ensure the normal operation of lightning protection, it needs to be replaced every year Lightning arresters, the workload is greatly increased.

In view of the above-mentioned defects in the background technology, it is necessary to provide a lightning protection negative angle protection device.

Utility model content

(1) Technical problems to be solved

The technical problem to be solved by the utility model is to solve the problem that the work of troubleshooting the lightning protection line tripping through the lightning arrester is heavy, and the repeated use rate of the lightning arrester is low, requiring frequent maintenance, testing and replacement.

(2) Technical solution

In order to solve the above technical problems, the utility model provides a lightning protection negative angle protection device, which includes a cross arm, a wire is laid on the cross arm, an insulator is arranged between the wire and the cross arm, and a lightning rod and a grounding mechanism, one end of the lightning rod is fixedly connected to the cross-arm, and is arranged obliquely with the cross-arm, and the height of the other end is higher than the height of the wire; the cross-arm is connected to the The grounding mechanism is connected, and the grounding mechanism is used to discharge the charge of lightning to the ground.

Wherein, the number of the lightning guiding rods is two, and the two lightning guiding rods are respectively fixed to the two ends of the cross arm.

Wherein, insulators are fixedly connected to both ends of the cross-arm respectively, and one end of the lightning rod is fixedly installed at the joint between the insulator and the cross-arm.

Wherein, a connecting rod is provided on the grounding mechanism, one end of the connecting rod protrudes from the ground surface and is used for connecting with the grounding down conductor, and the other end is fixedly connected with a plurality of lightning scattering rods.

Wherein, the connecting rod is fixedly connected with the grounding down conductor through cooperation of a screw and a nut.

Wherein, the plurality of mine scattering rods are buried vertically and deeply underground.

Wherein, the material of the lightning rod is conductive material.

Wherein, the material of the grounding mechanism is a conductive material.

Wherein, the material of the grounding downconductor is conductive material.

(3) Beneficial effects

The above-mentioned technical scheme of the utility model has the following beneficial effects: one end of the lightning rod of the lightning protection negative angle protection device of the utility model is fixedly connected with the cross arm, and is arranged obliquely with the cross arm, and a wire is laid on the cross arm. The height of one end is higher than the height of the wire, so that the lightning rod can be stretched out, which can attract lightning in lightning weather, so that the wire can avoid being hit by lightning; the cross arm is connected to the grounding mechanism through the grounding down conductor, and the grounding mechanism Used to discharge lightning charges to the ground. The lightning protection negative angle protection device of the utility model attracts lightning through the lightning rod, and then introduces the charge of the lightning into the ground, thereby protecting the wire or the tower and reducing the number of times it is struck by lightning, and then the device and the charged wire body It is completely detached, reducing power outages caused by equipment failures, and effectively avoiding power interruptions or dangers. It has a simple structure and is easy to install. After one installation, there is no need to check and replace equipment frequently, and it has a high reuse rate.

Description of drawings

Fig. 1 is a structural schematic diagram of a lightning protection negative angle protection device according to an embodiment of the present invention.

Among them, 1: lightning rod; 2: grounding down conductor; 3: connecting rod; 4: lightning rod; 5: crossarm; 6: wire; 7: insulator; 8: tower.

Detailed ways

The implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

In the description of the present utility model, unless otherwise specified, "plurality" means two or more. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" etc. is Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot It should be understood as a limitation of the present utility model.

In the description of the present utility model, it should be noted that unless otherwise specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or Integratively connected; it can be mechanically or electrically connected; it can be directly connected or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

As shown in Figure 1, a cross arm 5 is provided on the pole tower 8, a wire 6 is laid on the cross arm 5, and an insulator 7 is arranged between the wire 6 and the cross arm 5. The lightning protection negative angle protection device described in this embodiment One end of the lightning rod 1 is fixedly connected to the cross arm 5, and is arranged obliquely with the cross arm 5. In this embodiment, the preferred inclination angle is about 100 degrees; the height of the other end is higher than the height of the wire 6, so that the lightning rod 1 protrudes from the position of the wire 6, which can play a role in attracting lightning in lightning weather, so that the wire 6 or the tower 8 is prevented from being struck by lightning.

The crossarm 5 is connected to the grounding mechanism through the grounding down conductor 2, and the grounding mechanism is used to discharge the lightning charge to the ground, so that the lightning charge attracted by the lightning rod 1 can be introduced into the ground through the grounding down conductor 2 and the grounding device. Thus, the lightning charges are safely leaked into the earth. Wherein, the grounding downconductor 2 is preferably arranged along the tower 8 to reduce the power transmission process, one end of which is connected to the middle of the cross arm 5, and the other end is connected to the grounding mechanism.

Specifically in this embodiment, the number of lightning rods 1 is two, and one end of the two lightning rods 1 is fixedly connected to the two ends of the cross arm 5 respectively. Specifically, the lightning rod 1 is made of angle steel, and two Angle steels of 50×5×800 mm are fixedly connected to both ends of the cross arm 5 respectively, and a bend angle with an inner angle of about 100° is set at the length of the angle steel about 100 mm, so that it is inclined to the cross arm 5, and the top of the bend angle Can be higher than the wire 6, play the role of lightning. Since the two ends of the cross arm 5 are respectively fixedly connected with the insulator 7, in order to facilitate the installation of the lightning rod 1, preferably, the lightning rod 1 is fixedly installed between the insulator 7 and the cross arm 5, so that the wire 6 and the lightning rod 1 are insulated by an insulator 7 to prevent lightning charges from entering the wire 6, causing interruption of power supply or causing danger.

It should be noted that the number of lightning rods 1 can be one or more in addition to two, as long as it is installed obliquely with the cross arm 5, and one end can be higher than the height of the wire 6, so that under lightning weather, The lightning rod 1 can attract lightning, so as to protect the wire 6 from being struck by lightning.

A connecting rod 3 is arranged on the grounding mechanism. One end of the connecting rod 3 protrudes from the ground surface and is used for connecting with the grounding downconductor 2 . In this embodiment, in order to securely and fixedly connect the grounding downconductor 2 to the grounding mechanism, preferably the connecting rod 3 is fixedly connected to the grounding downconducting wire 2 through the cooperation of the screw and the nut. Specifically, the connecting rod 3 is composed of a It is made of 50×5×4500mm flat steel, one end of which protrudes from the ground surface, and is provided with a through hole for installation, and is fixedly connected with the grounding end of the grounding downconductor 2 through the cooperation of screws and nuts, and the other end is buried deep underground for about 1 meters, and fixedly connected with four lightning-dispelling rods 4, the four lightning-dispelling rods 4 are angle steels of 63 × 6 × 800mm, and are evenly buried vertically and deeply in the ground, and are connected to each other through connecting rods 3 for Evenly discharge the lightning charge into the ground.

In order to ensure the high efficiency of the lightning guiding and lightning releasing process, the materials of the above-mentioned lightning guiding rod 1 , the grounding mechanism and the grounding downconductor 2 are all conductive materials, preferably steel in this embodiment. Wherein, the grounding resistance tested by the connecting rod 3 in the grounding mechanism is preferably set to be less than 10Ω, so as to prevent excessive grounding resistance from causing lightning charges not to be smoothly discharged into the ground.

It should be noted that the grounding down-conductor 2 can be a wire, and its exterior is covered with an insulating sheath to avoid leakage or danger caused by passers-by accidentally touching the grounding down-conductor; meanwhile, the grounding down-conductor 2 can also be made of flat steel It is fixedly connected between the cross arm and the grounding mechanism, and its exterior is painted with insulating paint to make the performance of lightning conduction more excellent.

In the lightning protection negative angle protection device of this embodiment, in thunderstorm weather, the extended lightning rod 1 introduces the charge of lightning into the grounding down conductor 2 through the cross arm 5, and the grounding down conductor 2 introduces the charge into the grounding device, and then Evenly leaked into the ground; the lightning rod 1 is installed between the insulator 7 and the cross arm 5, and the insulator 7 can protect the wire 6 from the influence of lightning charges. Therefore, the cost of installing the lightning protection negative angle protection device on the pole tower 8 is lower than that of installing a lightning arrester, and it can be used continuously for a long time with less maintenance times.

It should be noted that the lightning protection negative angle protection device of this embodiment is preferably installed in lightning-prone areas and areas where lightning strikes are prone to occur, and is preferably installed on 10kV lines that cause more line trips, so that its cost is low and maintenance The characteristics of less replacement times and convenient installation can be used to the greatest extent.

In summary, one end of the lightning rod 1 of the lightning protection negative angle protection device of the present utility model is fixedly connected with the cross arm 5, and is arranged obliquely with the cross arm 5, and a wire 6 is laid on the cross arm 5, and the other end The height is higher than the height of the wire 6, so that the lightning rod 1 is extended, which can attract lightning in lightning weather, so that the wire 6 is prevented from being hit by lightning; the cross arm 5 is connected to the grounding mechanism through the grounding down conductor 2 , The grounding mechanism is used to discharge the lightning charge to the ground. The lightning protection negative angle protection device of the utility model attracts lightning through the lightning rod 1, and then introduces the charge of the lightning into the ground, thereby protecting the wire 6 or the pole tower 8, so that it reduces the number of times of being hit by lightning. The body of the live wire is completely separated, which reduces the power failure caused by equipment failure, and effectively avoids power interruption or danger. It has a simple structure and is easy to install. After one installation, there is no need to check and replace equipment frequently, and it has a high reuse rate.

The embodiments of the invention have been presented for purposes of illustration and description, but are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and changes will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to better explain the principle and practical application of the invention, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for particular purposes.

Claims (9)

1. A lightning protection negative angle protection device, comprising a cross arm (5), a wire (6) is laid on the cross arm (5), an insulator is arranged between the wire (6) and the cross arm (5) (7), characterized in that it also includes a lightning rod (1) and a grounding mechanism, one end of the lightning rod (1) is fixedly connected to the cross arm (5), and is connected to the cross arm (5) The height of the other end is higher than the height of the wire (6); the cross arm (5) is connected to the grounding mechanism through the grounding downconductor (2), and the grounding mechanism is used to discharge the charge of lightning in the underground. 2. The lightning protection negative angle protection device according to claim 1, characterized in that, the number of said lightning rods (1) is two, and said two lightning rods (1) are respectively fixed on said horizontal Bear the two ends of (5). 3. The lightning protection negative angle protection device according to claim 1, characterized in that, the two ends of the cross arm (5) are respectively fixedly connected with insulators (7), and one end of the lightning rod (1) is fixed Installed at the junction of the insulator (7) and the cross arm (5). 4. The lightning protection negative angle protection device according to claim 1, characterized in that a connecting rod (3) is provided on the grounding mechanism, and one end of the connecting rod (3) protrudes from the ground surface, and is used for connecting with The grounding downconductor (2) is connected, and the other end is fixedly connected with a plurality of lightning scattering rods (4). 5. The negative lightning protection device according to claim 4, characterized in that, the connecting rod (3) is fixedly connected to the grounding down conductor (2) through the cooperation of screws and nuts. 6. The lightning protection negative angle protection device according to claim 4, characterized in that, the plurality of lightning scattering rods (4) are vertically and deeply buried in the ground. 7. The negative-angle lightning protection device according to any one of claims 1-6, characterized in that, the lightning rod (1) is made of a conductive material. 8. The lightning protection negative angle protection device according to any one of claims 1-6, wherein the material of the grounding mechanism is a conductive material. 9. The negative-angle lightning protection device according to any one of claims 1-6, characterized in that, the material of the grounding downconductor (2) is a conductive material.