JPH0438110A - Spacer for transmission line having large bundle diameter - Google Patents

Abstract

PURPOSE:To facilitate transportation and handling by coupling n conductor grip parts, with same interval, to n split frames thereby forming an annular frame. CONSTITUTION:An annular frame 1 is equally split into n sections (6 sections on the drawing) thus preparing split frames 1a-1b. The split frames 1a-1b are composed of light pipe member such as aluminum alloy or semiconducting plastic pipe. Respective ends of the split frames 1a-1b are coupled through grip part fixing metals thus forming a right hexagonal frame, and then six grip parts 3a-3b are fixed to the grip part fixing metals 2a-2b. Consequently, the weight is reduced and transportation and assemblage on site can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a spacer for a large east diameter bundled conductor power transmission line.

[Prior Art] In order to increase the power transmission capacity of a bundled conductor transmission line in which multiple conductors are arranged in a polygonal shape, a power transmission system has been put into practical use in which the diameter of the bundled conductors is increased to reduce inductance. The conductor array has a large diameter of 2 m to 3 m.

The conductors that make up the bundled conductor power transmission line as described above are arranged in a polygonal ring shape by maintaining the distance between each conductor using spacers, but conventional spacers are made of iron with a combination of dumbbells and tsukimetsuki. Large-sized spacers were used for plates, shaped steel, steel bars, etc., and were integrally welded into a polygonal ring shape.

:Problem to be Solved by the Invention] As mentioned above, as the diameter of the bundle conductor increases, the spacer that holds each conductor at the large diameter position also becomes large, so the weight is 30~
It weighed as much as 50% and was heavy, making it difficult to transport, handle, and attach it to power transmission lines.

An object of the present invention is to provide a large bundle diameter power transmission line spacer that is lightweight and easy to transport and handle.

Means for Solving Section 1 U] In order to achieve the above object, the large bundle diameter power transmission line spacer of the present invention includes a divided frame in which an annular frame is divided into a plurality of n equal parts and a plurality of conductor gripping parts. The divided frames are connected in an annular manner, and the plurality of conductor grips are supported at equal intervals by the annular frame.

[Function] Even if the spacer becomes larger due to the larger diameter of the bundle conductor, by dividing the annular frame into equal parts, each divided frame becomes smaller and lighter, making it easier to transport and handle.

Each conductor gripping portion grips a conductor of the bundled conductor transmission line and is attached to each conductor.

Each split frame is interconnected to form an annular frame. By connecting these divided frames in a polygonal, circular, or other annular shape, the arrangement diameter is adapted to the arrangement diameter of the bundle conductor power transmission line arranged in a polygonal annular shape with a large diameter.

The conductor grips are supported at equal intervals by the annularly connected frame, and each conductor bundle is held at a predetermined interval by the equally spaced conductor grips.

[Embodiments] Examples of the present invention will be described below with reference to the drawings. 1 to 6 each show an embodiment of the large bundle diameter power transmission line spacer of the present invention, and FIGS. 1 and 2 show the first embodiment.

In FIG. 1, 1 is a regular hexagonal annular frame,
Divide this into 6 equal parts and divide frames 1a, 1b, 1c
, 1d, 1e, and 1f.

The divided frames 1a to 1f are made of aluminum alloy S material, aluminum alloy tube, FRP or other engineering plastic material, or made of plastic material mixed with carbon black, carbon fiber, etc. to make it semiconductive. Form into a pipe shape.

Each end of each of the divided frames 1a to 1f is connected with the gripping parts 2a to 2f to form a regular hexagonal annular frame 1, and the six gripping parts 3a and 3b are connected to the six gripping parts 2a to 2f. , 3C13d, 3e, and 3f.

The above-mentioned metal fittings 2a to 2f each have connecting portions 21.21 extending on both left and right sides of the lower part, like the metal fitting 2 with several gripping parts shown in the second figure, and have metal eye bolts 2 on the upper side.
3, and connect its lower end to the nut 2 via the spring 24.
Attach it elastically with step 5.

The connecting parts 21.21 on both the left and right sides are made by inserting bolts 22 into the openings of the ends 11 of each divided frame 1 made of pipe and fixing them with bolts 22. It connects.

Each of the conductor gripping parts 3a to 3f has a clamp fitting 31, like the conductor gripping part 3 shown in the second diagram, whose lower end is rotatably connected to the upper end of the eye bolt 23 by a rotatable bolt 36. Install. A wire gripping groove 30 is provided at the upper end of the clamp fitting 31, and the upper end of the opening/closing piece 33 having the wire gripping/1132 is attached to the upper end of the clamp fitting 31.
Rotatably connect with 4. Numeral 35 is a tightening bolt that fixes the opening/closing piece 33 and the clamp fitting 31.

This conductor gripping part 3 is constructed by gripping the conductor A by clamping the conductor A between the clamp fitting 31 and the wire gripping grooves 30 and 32 of the opening/closing piece 33 and tightening and fixing it with the tightening bolt 35.
is attached to conductor A.

When transporting the spacer configured as described above, the divided frames 1a to 1f and the metal fittings 2a to 2f with the number of grips are not connected but are removed and transported.

To attach it to a power transmission line, as shown in the first diagram, each conductor A1-80 of the bundled conductor transmission line is gripped with each conductor grip part 3a to 3f, and each conductor grip part 3a to 3f is attached to each conductor ^. Attach to 1 to 86.

A metal fitting 2a with a number of conductor gripping parts for each of the conductor gripping parts 3a to 3f
The divided frames 1a to 1f are connected as shown in the first figure by ~2f, but the divided frames 1a and 1b are connected by the gripping fitting 2b, and the divided frames 1b and 1C
are connected by a metal fitting 2C with a number of grips, and a split frame 1C
11d are connected by a metal fitting 2d with a number of gripping parts, the divided frames 1d and 1e are connected by a metal fitting 2e with a number of gripping parts, and the divided frames 1e and 1f are connected by a metal fitting 2f with a number of gripping parts to form a regular hexagonal ring shape. A frame 1 is formed.

The regular hexagonal annular frame 1 constructed in this way, the metal fittings 2a to 2f with a number of grips at each vertex thereof, and the conductor grips 3
The conductors ^1 to 80 along the east conductor diameter are held at regular hexagonal intervals by spacers a to 3f.

In addition, when the pipe-shaped split frame is made of plastic material, it is desirable to mix carbon black, carbon fiber V1, etc. into the plastic to give it semiconductivity. If the part loosens and comes into contact with the wire intermittently, an unbalanced voltage between the bundle conductors will generate a voltage of 500 to 1500 V between the frame and the conductor grip, causing sparks and harmful noise interference to televisions, radios, etc. However, such inconvenience can be prevented by making the frame semiconductive and making the frame and the conductor gripping part have the same potential.

The embodiment shown in FIG. 3 is an embodiment in which the connecting parts 21 on both the left and right sides of the above-mentioned clamp 2 with several gripping parts are modified, and the same reference numerals as in FIG. Only the lower end of 31 is shown. Similarly to the embodiment described above, 22 is a bolt, 23 is an eye bolt, 24 is a spring, 25 is a nut, and 36 is a rotatable bolt.

In this embodiment, the connecting portion is formed in the shape of an insertion hole like 21X, and the end portion 11 of each divided frame 1 is fixed and connected to this hole-shaped connecting portion 21X with an insertion bolt 22.

The embodiment shown in the fourth figure is an embodiment in which the metal fitting 2 with several gripping parts of the previous embodiment is modified and the frame is made smaller to form an annular frame, and the fifth figure shows the metal fitting 2 with several gripping parts. .

As shown in FIG. 5, the connecting portion 21Y of the metal fitting 2 with several gripping portions of this embodiment is formed by curving it into an arc having the same radius of curvature as the annular frame 1 and providing a connecting hole 26 inside. An inverted U-shaped eyebolt support part 27 with a height h is provided on the upper surface of 21Y. The eye bolt 23 attached to the upper side 28 of the inverted U-shape has its lower end projected inward of the inverted U-shape below the upper side 28, and is elastically supported by the eye bolt support part 27 with a spring 24 and a nut 25.

The lower end portion of the clamp fitting 31 of the conductor gripping portion 3 is attached to the eye bolt 23 with a rotatable bolt 36. Although the upper part of the conductor gripping part 3 is not shown in FIG. 5, the upper part of the clamp fitting 31, which is not shown, has the same structure as that shown in the second figure.

The connecting portion 21Y of the above-mentioned gripping bracket 2 is connected to the surface dividing frame 11.1n by inserting the half-circular divided frame 11.1n into the connecting hole 26 from both ends thereof and fixing it with bolts 22. do.

In the actual plane example shown in FIG. 4, the annular frame 1 is divided into two parts, and the ends of each semicircular divided frame 11.1n are connected by the connecting part 21Y of the metal fitting 2 with multiple grips.
For this reason, the upper bracket 2a and the lower bracket 2 of the brackets 2a to 2f shown in FIG.
The respective ends of the divided frames 1r# and 1n are connected at two points d to form an annular frame 1 having a frame diameter Of.

Fittings 2a and 2b with respective gripping parts are attached to the annular frame 1.
, 2C12d, 2e, and 2f at equal intervals, or separate the split frames 11.1n without connecting them when transporting them, and when attaching them to the power transmission line, attach each conductor grip part 3a to 3.
Attach f to each conductor ^1 to 80 of the bundle conductor, and attach the divided frame 111.1n to each connecting part 2 of the gripping parts 2a and 2d.
By connecting with 1Y, each conductor of the bundle conductor diameter ^1 to 80 can be equally connected by the annular frame 1 and the spacer consisting of the metal fittings with number of grips 2a to 2f and conductor grips 3a to 3f attached at equal intervals to the annular frame 1. Maintaining the distance is the same as in the case of the first embodiment shown above.

In the embodiment shown in FIGS. 4 and 5, as described above, the eye bolt support portion 27 of height h is attached to the grip portion mounting bracket jL2.
By providing a support part 27 and attaching the conductor grip part 3 thereto, the frame diameter Of of the annular frame 1 is reduced by the height h, and the frame is made smaller, compared to the case where this support part 27 is not provided. Ru.

Therefore, the frame can be made smaller without having to divide the frame into six equal parts as in the embodiment shown in the first figure, and this is because the
It may be divided or divided into three parts.

In the embodiment shown in the sixth figure, the frame 1 formed in the regular hexagonal annular shape of the embodiment shown in the first figure is divided into divided frames 1b, 1d, 1
This is an embodiment in which the connecting flange portions 12b, 12d, and 12f are divided into three equal parts at f. In this embodiment, during transportation, the connecting flange portions 12b, 12d, 12
f is separated, and the half part 1f- of the divided frame 1f is attached to both ends of the divided frame 1a using the gripping parts 2a and 2b.
The first frame part which connected a and the half part 1b-a of the divided frame 1b, and the divided frame half part 1b-c, the divided frame 1C1 and the divided frame half part 1d-c were similarly connected by a metal fitting with a number of grips 2C12d. Transported in three parts: the second frame part, and a third frame part in which the split frame half parts 1d-e, the split frame 1e, and the split frame half parts 1f-8 are connected with the gripping parts 2e and 2f. so that the conductor gripping parts 3a to 3f are connected to the bundle conductor A1.
~After attaching to A6, connect flange parts 12b and 12d
, 12f are connected with bolts to form a regular hexagonal annular frame l, and each conductor A1- of the bundle conductor diameter is connected with bolts.
Keep the 80 evenly spaced.

According to this embodiment, assembly work on the power transmission line is further facilitated. In addition, since the gripping part fitting 2 and the split frame can be integrally connected, the gripping part is strong and has no looseness.

As in each of the above embodiments, the polygonal, circular, etc. annular frame 1 is divided into 2 to n equal parts to form divided frames 1a to 1n.
An annular frame 1 is assembled by connecting the annular frames 1 on the bundle conductor.The number of separate sections that are separated for easy transportation until they are connected on the bundle conductor may be set to an appropriate number for easy handling. In the embodiment shown in FIG. 4, the annular frame 1 is divided into two semicircular divided frames 11.1n, but it may be divided into three parts or more. In the embodiment shown in FIG. Although it is provided in three equally divided locations, it may be provided in more than three locations or in two locations.

Further, the number of conductor gripping parts 3 is made to correspond to the number of bundled conductors.

Furthermore, as mentioned above, dividing the annular frame makes it easier to handle, but its constituent materials include plastic and Fiber.
By using RP, etc., it is possible to actively reduce the weight, and by using pipe materials such as aluminum alloy and FRP, processes such as galvanizing are not required, and strength, corrosion resistance, etc. are highly reliable and uniform. Ru.

[Effects of the Invention] As mentioned above, the present invention is structured so that the annular frame is divided and assembled at the installation site, so even if it is a large spacer for a large bundle diameter power transmission line, it is easy to transport and handle it. It can be divided into smaller and lighter pieces, making it easier to work with. In addition, the constituent members are standardized, making compatibility easier.

[Brief explanation of the drawing]

Figure 1 is a front view of one embodiment of the spacer of the present invention, Figure 2 is a front view of one embodiment of the spacer of the present invention;
The figure is a front view with a part of the gripping part mounting bracket and the conductor gripping part cut away, FIG. FIG. 5 is a front view showing a section of a part of the metal fitting with a number of grips shown in FIG. 4, and FIG. 6 is a front view of still another example of the spacer. Figure 1 Figure 21!1 1: Annular frame

Claims (1)

[Claims] A large bundle comprising a divided frame obtained by dividing an annular frame into n equal parts and a plurality of conductor gripping parts, the plurality of conductor gripping parts being supported at equal intervals by the annular frame in which the divided frames are connected in an annular shape. diameter power line spacer