JPS581489B2 - tadōtaiyou tādōtaiōtai tōgaishisouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tension insulator device for an overhead power transmission line consisting of three or more conductors.

In recent years, with the dramatic increase in demand for electricity in urban areas, there has been a need to increase power transmission capacity, but it is becoming increasingly difficult to construct new power transmission lines due to environmental protection, soaring land prices, and the impact on local communities.

For this reason, multi-conductor power transmission lines are being constructed to increase power transmission capacity by making overhead power transmission lines multi-conductor.

By the way, in the conventional tension insulator device applied to overhead power transmission lines with three or more conductors, for example, as seen in the case of the four conductor tension insulator device shown in Fig. 1, the yoke body 1 of the tension portion is The structure is usually a combination of a plurality of yokes 2 and connecting fittings 3, and a conductor clamp 4 is attached to one side of the yoke body 1.
and an insulator chain 5 is connected to the other, and a shield ring (not shown) is further attached to this yoke body 1.

However, with such conventional systems, as the number of conductors in the applied overhead power transmission line increases, the tension-resistant part of the insulator device becomes significantly more complex, making transmission line construction work such as equipment assembly work and overhead line work extremely difficult. Not only is it difficult to
The disadvantage was that the length of the insulator from the tower arm was extremely long, making the tower larger and increasing the cost of the tower.

The present invention aims to provide a multi-conductor tension insulator device free from the above-mentioned drawbacks, in which tension insulator chains are each connected to a yoke body having an insulator link connection part for cooling a regular polygon. ,
This is a multi-conductor insulator device in which each conductor is tensile supported by each tension insulator chain.

Hereinafter, the present invention will be explained based on illustrated embodiments.

In the embodiment of the present invention shown in FIG. 2, the insulators are connected to a four-way yoke 7, which is attached to a tower body (not shown) and has a cross-shaped insulator connection part 6 which forms a regular square, through a connecting fitting 3. 5 are installed in a regular square arrangement, and a connecting fitting 3 and a conductor clamp 4 are sequentially connected to the other end of the insulator chain 5 to form a tension-resistant insulator sliding door 8 for each conductor to support the conductor under tension.

In the embodiment, the quadruple yoke 7 has a cross shape made of welded iron plates, but it may have any structure such as an annular yoke made of a pipe or the like or a cast rib structure, and there is no restriction on the structure.

In addition, if the transmission voltage of the applied transmission line increases, the number of insulators in each tension insulator chain increases and the length of the insulator chain becomes longer, and there is a concern that the tension insulator chains may come into contact with each other, the third As shown in the figure, the line connecting fittings 3 of each tension insulator link 8 are attached to the inside of the shield link 9 at predetermined intervals by welding or bolting, so that they also serve as insulator link spacers. The line sides of 8 may be connected and supported in a substantially regular polygonal shape.

In the embodiment shown in FIG. 3, the shield ring 9 is also used as an insulator spacer, but in addition to the shield ring, the line-side connecting fittings 3 of each tension-resistant insulator strand 8 are connected to each other in an annular shape with a pipe shaped like a ring. Any structure of the insulator spacer may be used, such as a spacer or a plate-shaped spacer made of an iron plate, and there is no restriction on the structure.

In the present invention, conductor clamps that support each conductor of an overhead power transmission line are directly connected to the insulator chain using connecting fittings to form a tension-resistant insulator chain for each conductor. This combination eliminates the need for a yoke body, simplifies the insulator device, facilitates power transmission line construction work, and shortens the length of the insulators, making it possible to downsize the tower.

As explained above, according to the multi-conductor tension insulator device of the present invention, it is possible to easily construct an overhead power transmission line with three or more conductors to increase the power transmission capacity, and the present invention is extremely useful industrially. It is.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional four-conductor tension insulator device;
FIG. 2 is a perspective view of a four-conductor tension insulator device according to one embodiment of the present invention, and FIG. 3 is a perspective view of a four-conductor tension insulator device according to another embodiment of the present invention. 1...Yoke body, 2...Yoke, 3.
...Connection fittings, 4...Conductor clamps, 5
...Insulator connection part, 6...Insulator connection part, 7
...4 yokes, 8... tension insulators,
9...Shield ring.

Claims (1)

[Claims] 1. A multi-conductor multi-conductor device characterized in that tension-resistant insulators are connected to a yoke body having a regular polygonal insulator-connection portion, and each tension-resistant insulator string supports one conductor under tension. Zhang insulator device.