CN204441006U - Simply connected insulator string lightning protection inter space arcing horn - Google Patents

Abstract

The utility model relates to a kind of simply connected insulator string lightning protection inter space arcing horn, be made up of cross-arm-end arcing horn, right angle link plate, conductor wire end arcing horn, cross link plate, described cross-arm-end arcing horn and conductor wire end arcing horn manufacture with round steel, the cross section of cross-arm-end arcing horn is the W shape of straightway in centre, straightway is connected with right angle link plate; The cross section of conductor wire end arcing horn is the V-arrangement of straightway in centre, and middle straightway is connected with cross link plate, and conductor wire end arcing horn is provided with ball in end; Described cross-arm-end arcing horn is connected with right angle link plate and is connected in series in insulator string.The beneficial effects of the utility model are: one is adopt to increase link plate, thus does not rely on and the connecting hole being connected gold utensil in insulator string, makes the installation of arcing horn, replacing more simple, rapid; Two is that arcing horn adopts diplopore to connect, and the gap change avoiding arcing horn to cause because of rotation in the line, makes operation more stable.

Description

Arcing Angle of Lightning Protection Gap of Single Insulator String

technical field

The utility model belongs to the technical field of lightning protection gap arc angles, in particular to a single-connected insulator string lightning protection gap arc angle.

Background technique

The transmission line is located in the wilderness and is vulnerable to lightning strikes. The direct lightning overvoltage caused by lightning strikes on the line and the induced lightning overvoltage caused by the lightning strike on the ground near the line are the so-called atmospheric overvoltages that often occur on transmission lines. The accidents caused by insulator flashover, line tripping and lightning wave intrusion into substation and damage to substation equipment account for a large percentage of power grid accidents. In order to prevent these accidents caused by atmospheric overvoltage, lightning wires (overhead ground wires), lightning rods, and different forms of lightning arresters have been installed on power lines and substations. As one of the effective lightning protection devices, the arcing angle is installed at the end of the insulator string with a certain gap. The insulation breakdown voltage of the arcing angle is lower than that of the insulator string, so when the transmission wire is subjected to lightning When shielding strikes, the insulator strings can be broken down preferentially, and the lightning current can be quickly discharged into the ground, thereby protecting the insulator strings from burning damage caused by power frequency freewheeling arc after the lightning breakdown gap.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies of the existing technology, and provide a suitable installation insulator string that can not rely on the original insulator string connection, and at the same time play the role of lightning protection, increase the arc angle of the lightning protection gap, and ensure the stability and safety of the line The arcing angle of the lightning protection gap of the operating single-connected insulator string.

The purpose of this utility model is accomplished through the following technical solutions. This single insulator string lightning protection gap arc angle is composed of cross-arm end arc angle, right-angle hanging plate, wire end arc angle and cross hanging plate. The cross-arm end arc angle and wire end arc angle The angle is made of round steel. The section of the arc angle at the cross-arm end is W-shaped with a straight line in the middle, and a right-angle hanging plate is connected to the straight line; the arc angle at the wire end is V-shaped with a straight line in the middle. The straight line section is connected with a cross hanging plate, and the arc angle at the end of the wire is provided with a ball at the end; the arc angle at the cross arm end is connected with the right angle hanging plate and connected in series to the insulator string; the arc angle at the end of the wire is connected in series; The arc angle is connected with the cross hanging plate and connected in series to the insulator string.

As a preference, the connection between the arc angle at the cross-arm end and the right-angle hanging plate, and the connection between the arc angle at the wire end and the cross hanging plate are all double-hole connections, and the positions of the double holes are all set at the cross-arm end. Arc angle, the center position of the arc angle at the wire end.

The beneficial effects of the utility model are as follows: one is to increase the hanging plate, so that it does not depend on the connection hole connected with the fittings in the insulator string, so that the installation of the arc angle does not need to change the shape of other fittings on the insulator string, so that the arc angle The installation and replacement are simpler and faster; the second is that the arcing angle adopts double-hole connection, which avoids the gap change caused by the rotation of the arcing angle in the line, and makes the operation more stable.

Description of drawings

Fig. 1 is a schematic diagram of the connection structure between the arc angle at the end of the cross arm and the right-angle hanging plate of the utility model.

Fig. 2 is a schematic diagram of the connecting structure of the arc angle at the wire end and the cross hanging plate of the present invention.

Fig. 3 is a schematic diagram of the structure of the arc angle at the end of the cross arm of the present invention.

Fig. 4 is a schematic diagram of the front structure of the right-angle hanging board of the present invention.

Fig. 5 is a schematic diagram of the side view structure of the right-angle hanging plate of the present invention.

Fig. 6 is a schematic diagram of the structure of the arcing angle at the wire end of the present invention.

Fig. 7 is a schematic diagram of the front structure of the cross hanging board of the present invention.

Fig. 8 is a side view structural schematic diagram of the cross hanging board of the present invention.

The labels in the attached drawings are respectively: 1. arc angle at the cross-arm end; 2. right-angle hanging plate; 3. arc angle at the wire end; 4. cross hanging plate; 5. ball; 6. double holes.

Detailed ways

The utility model will be introduced in detail below in conjunction with the accompanying drawings: as shown in the accompanying drawings 1 to 8, the utility model belongs to the insulator protection fittings on the overhead transmission line, and the arc angle of the lightning protection gap of the single insulator string is determined by the cross-arm end The arc angle 1, the right angle hanging plate 2, the arc angle 3 at the wire end, and the cross hanging plate 4 are composed. The arc angle 1 at the cross-arm end and the arc angle 3 at the wire end are made of Φ16 round steel. The cross-section of the arc angle 1 at the end is W-shaped with a straight line in the middle, and a right-angle hanging plate 2 is connected to the straight line; the arc angle 3 at the wire end is V-shaped with a straight line in the middle, and a The cross hanging plate 4, the arc angle 3 at the end of the wire is decorated with a Φ50 ball 5; the arc angle 1 at the cross arm end is connected with the right angle hanging plate 2 and connected in series to the insulator string; the end of the wire The arcing angle 3 is connected with the cross hanging plate 4 in series to the insulator string.

The arcing angle 1 at the cross-arm end is connected in series with the right-angle hanging plate 2 into the insulator string, and there is no need to add connecting holes for the arcing angle to the connecting fittings at the cross-arm end of the insulator string.

The arc strike angle 3 at the wire end is connected in series with the cross hanging plate 4 and connected in series to the insulator string, so there is no need to add connection holes for the arc strike angle to the connecting fittings at the wire end of the insulator string.

The connection between the arc angle 1 at the cross-arm end and the right-angle hanging plate 2, the arc angle 3 at the wire end and the cross hanging plate 4 are all double-hole connections, and the positions of the double holes 6 are all located on the cross-arm The central position of the arc angle 1 at the end and the arc angle 3 at the end of the wire can limit the swing and rotation of the arc angle.

The utility model is not limited to the above-mentioned embodiments, regardless of any changes in its shape or material composition, any structural design provided by the utility model is a deformation of the utility model, and should be considered as a modification of the utility model. within the scope of protection.

Claims (2)

1. a simply connected insulator string lightning protection inter space arcing horn, it is characterized in that: be made up of cross-arm-end arcing horn (1), right angle link plate (2), conductor wire end arcing horn (3) and cross link plate (4), described cross-arm-end arcing horn (1) and conductor wire end arcing horn (3) manufacture with round steel, the cross section of cross-arm-end arcing horn (1) is the W shape of straightway in centre, straightway is connected with right angle link plate (2); The cross section of conductor wire end arcing horn (3) is the V-arrangement of straightway in centre, and middle straightway is connected with cross link plate (4), and conductor wire end arcing horn (3) is provided with ball (5) in end; Described cross-arm-end arcing horn (1) is connected with right angle link plate (2) and is connected in series in insulator string; Described conductor wire end arcing horn (3) is connected with cross link plate (4) and is connected in series in insulator string.

2. simply connected insulator string lightning protection inter space arcing horn according to claim 1, it is characterized in that: the connection of described cross-arm-end arcing horn (1) and right angle link plate (2), conductor wire end arcing horn (3) are diplopore with the connection of cross link plate (4) and connect, and the position that its diplopore (6) is offered all is located at the center of cross-arm-end arcing horn (1), conductor wire end arcing horn (3).