JPH0310573Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to a multiple tension insulator device in which horizontal insulator chains are vertically arranged in parallel.

(Prior art) Conventionally, as a multiple tension insulator device, for example,
A double tension insulator device as shown in the figure is used.

This tensile insulator device 30 has suspension insulator chains 2 and 3 each composed of clevis-type suspension insulators 6 arranged in parallel, and both ends of the insulator chains 2 and 3 are connected to a yoke 4 on the tower body side.
and a yoke 5 on the conductor side.

Each component of this dual tension insulator device is designed to withstand tension based on certain safety standards.

However, in actual installation conditions, lightning,
In addition to natural phenomena, such as arcs caused by increased surface leakage current due to soiling of insulators, abnormal tension in wires caused by wind or gearing, or snow capping of insulator equipment that occurs especially in cold and snowy areas, shocks during construction, etc. ,
There was a possibility that a tension greater than expected was applied to the insulator device due to human intervention, causing the insulator device to separate at each connection portion. As a result, there was a risk that the separated suspended insulator chain would collide with the normal suspended insulator chain, damaging the normal suspended insulator chain, leading to the electric wire falling to the ground or breaking, and causing a secondary disaster.

Therefore, in order to prevent normal insulator links from being damaged due to collision with the severed insulator links, for example, a double link as disclosed in Utility Model Application No. 56-197841 (Utility Model Application No. 58-101425) has been proposed. A long-stem insulator device has been proposed.

This double-length stem insulator device attaches a horn made of iron rods or pipes in the shape of a horseshoe to each long stem insulator constituting the insulator chain, and when adjacent insulator chains collide with each other, the impact at the time of the collision is transmitted through the horn. By alleviating the force, damage to normal insulators is prevented.

(Problems to be solved by the invention) However, in the conventional double-length stem insulator device, the horns attached to each insulator are made of metal material in order to reduce the impact force, so the original purpose of the insulator is There was a problem in that it became difficult to secure sufficient insulation spacing.

The purpose of this invention is to minimize the damage to the insulator device in the event that the insulator chain breaks due to abnormal tension or abnormal impact, and to create a multi-strand tensile strength system that allows the insulation spacing between the insulator chains to be maintained as usual. Our objective is to provide insulator devices.

Structure of the invention (means for solving the problem) In order to solve the above-mentioned problem, the present invention provides a multi-strand tension insulator in which horizontal insulator chains are vertically arranged in parallel between the tower side yoke and the conductor side yoke. In the device, at least one of the adjacent insulator links is made of an insulating material, and on the opposite side, when any insulator link is severed, the normal insulator link is protected from collision between the severed insulator link and the normal insulator link. A structure is adopted in which a guard member is provided to prevent

(Operation) The present invention operates as follows by employing the above-mentioned means.

Some of the insulators of the insulator device arranged in parallel,
If the yokes on the tower body and conductor sides that connect multiple insulator chains are severed due to abnormal tension or abnormal impact, the yokes on the tower body side and the conductor side that connect multiple insulator chains will rotate around the joints with normal insulator chains due to the tension of the conductors such as high voltage lines. The normal insulator moves toward the severed insulator. On the other hand, the severed insulator chain remains in its original position due to inertia, and the normal insulator chain collides with the severed insulator chain.

At this time, the impact force at the time of collision between the normal insulator link and the severed insulator link is alleviated by the guard member attached to the severed insulator link or the normal insulator link, thereby preventing damage to the normal insulator link and separation. This prevents disconnection.

Further, since the guard member provided on the insulator string is made of an insulating material, the insulation interval between the insulator strings is maintained as usual.

(Example) Hereinafter, an example that embodies this idea will be described.
This will be explained in detail according to FIG.

In the drawing, reference numeral 1 shows the entire vertically arranged multiple tension insulator device, which roughly refers to both sides of suspended insulator chains 2 and 3 as upper and lower tension insulators arranged in the vertical vertical direction, that is, upper and lower tension insulators arranged in two stages. are connected to a tower side yoke 4 and a conductor side yoke 5, respectively.

To explain in detail the suspension insulator chains 2 and 3, 6 is a clevis-type suspension insulator equipped with a cap fitting 7, and a plurality of them are connected to form the suspension insulator chains 2 and 3. The cap fitting 7 at the front end (left end in Figure 1) of the suspension insulator chains 2 and 3 is mounted on a shaft 8 to be rotatable in the vertical direction to the tower side yoke 4, and the rear end of the suspension insulator chains 2 and 3 is (right end in Figure 1) is a parallel clevis 9 with respect to the conductor side yoke 5,
It is mounted on a shaft 10 via a shaft 9 so as to be rotatable in the vertical direction.

As shown in FIG. 2, a mounting bracket 11 consisting of an arcuate portion 11a and an arm portion 11b is attached to the cap fitting 7 of the clevis-type suspension insulator 6 constituting the lower suspension insulator chain 3. It is fixed to the arc-shaped band fitting 12 by bolts 13. Arc portion 11b of this mounting bracket 11
A guard member 14 made of hard vinyl chloride, which is an insulating material, is integrally provided on the upper part. As shown in FIG. 2, this guard member 14 is formed in a chevron shape, and its bottom surface is formed along the outer periphery of the shade 6a of the insulator 6.

15, 15 are a pair of arc horns attached to the lower ends of the tower side and conductor side yokes 4, 5 so as to surround both insulator chains 2, 3, respectively;
Reference numeral 16 denotes an arc horn attached to the upper ends of both yokes 4 and 5.

Parallel clevises 17, 17 are vertically rotatably mounted on shafts 18, 18 on the yokes 4, 5 on the tower body side and the conductor side, respectively. Both yokes 4 and 5
The parallel clevises 17 and 17 are connected to the upper suspension insulator chain 2.
This is an eccentric yoke attached to a position closer to the upper insulator chain 2 than the center position in the vertical direction between the upper insulator chain 3 and the lower suspension insulator chain 3.

Further, reference numeral 19 denotes a right angle clevis link which is rotatably pivoted in the vertical direction on the parallel clevis 17 of the tower side yoke 4, and connects one end of this insulator device 1 to the tower body 20 so as to be rotatable in the horizontal direction. are doing. 2
Reference numeral 1 denotes a compression clamp for gripping a conductor 22 such as a high-voltage wire that is rotatably pivoted in the vertical direction on a parallel clevis 17 of the conductor-side yoke 5, and a compression clamp 24 for a jumper wire 23 is provided at its base end. is provided.

Next, the operation of the vertically arranged multiple tension insulator device constructed as described above will be explained.

As shown in FIG. 3, if the upper suspension insulator chain 2 of the insulator device 1 arranged in parallel should be severed due to abnormal tension or abnormal impact, the yokes 4 and 5 on the tower side and the conductor side will Due to the tension of the conductor 22, it rotates around the shafts 8, 18 and 10, 18, respectively, and the lower insulator chain 3 moves toward the separated upper insulator chain 2. On the other hand, the severed upper insulator chain 2 remains in its original position due to inertia, and the lower insulator chain 3 collides with the severed upper insulator chain 2.

At this time, the guard member 14 attached to the lower insulator chain 3 reduces the impact force when the lower insulator chain 3 collides with the separated upper insulator chain 2. Moreover, since the guard member 14 is formed in a chevron shape, the separated upper insulator chain 2 slides on the slope of the guard member 14 as shown by the two-dot chain line in FIG. Damage and separation of the insulator chain 3 are prevented.

Further, since the guard member 14 is made of hard vinyl chloride, which is an insulating material, unlike the conventional technology in which the guard member is made of a horn made of a metal material, the insulation interval between the insulator chains can be maintained as usual. .

In addition, in this insulator device 1, since the tower side and conductor side yokes 4 and 5 are eccentric, the moment of force on the lower insulator side 3 is larger than the moment of force on the upper insulator side 2, and the Even if twisting force or wind pressure force is applied, the insulator device 1 as a whole is difficult to twist. Therefore, unreasonable force that may lead to deformation or destruction of each component of the insulator device 1 is unlikely to occur.

In addition, in this invention, the guard member 14 may be provided for the upper insulator link 2, or may be provided for the upper insulator link 2 and the lower insulator link 3. When provided for the upper insulator chain 2, it is not necessary to form it in a mountain shape, and it may be formed in a flat shape.

Effects of the invention As detailed above, the insulator device of this invention has
Compared to conventional insulator devices, even if some of the insulator chains arranged in parallel are separated due to abnormal tension or abnormal impact, they will not be separated from the normal insulator series by the guard member. It can reduce the impact force at the time of collision with insulator links, and prevent damage and separation of normal insulator links.
It is possible to prevent secondary disasters by preventing electric wires from falling to the ground or breaking, and since the guard member is made of an insulating material, the excellent effect is that the insulation interval between the insulator chains can be maintained as usual. There is.

[Brief explanation of the drawing]

Figure 1 is a front view showing an embodiment of this invention, Figure 2 is a front view showing an embodiment of this invention.
The drawings are a front end view taken along the line A-A in FIG. 1, FIG. 3 is a front view showing when the insulator chain is separated, and FIG. 4 is a front view showing a conventional example. 1... Vertically arranged multiple series tension insulator device, 2... Upper insulator series, 3... Lower insulator series, 4... Tower body side yoke,
5... Conductor side yoke, 6... Clevis type suspension insulator, 7... Cap metal fitting, 11... Mounting metal fitting, 1
4... Guard member, 15, 16... Arc horn, 20... Tower body, 21, 24... Compression clamp, 22... Conductor.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a multiple tension insulator device in which horizontal insulator chains 2 and 3 are vertically arranged in parallel between a tower side yoke 4 and a conductor side yoke 5, adjacent insulator chains 2, 3, a guard member 14 made of an insulating material is provided on the opposite side to protect the normal insulator link from a collision between the severed insulator link and the normal insulator link when the insulator link is severed. A multiple tension insulator device characterized by the following: 2. The multiple tension insulator device according to claim 1, wherein the guard member 14 is attached to the cap fitting 7 of the suspended insulator 6 constituting the insulator chain. 3. The multiple tension insulator device according to claim 1 or 2, wherein the guard member 14 has a chevron shape.