JP2000322961A - Conductor supporting insulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conductor supporting insulator capable of simply supporting various kinds of conductors in a switch gear without using a special fixing member such as a post and to provide a conductor supporting method using it. SOLUTION: Main circuit conductors 2 in a switch gear is supported by inserting them into holes 1a in a conductor supporting insulator 1. No filler metal or no fixing member such as a bolt is required for the conductor supporting insulator 1. When the main circuit conductors 2 each are an insulated conductor, all parts except a conductor connection part are insulated, so that no bare live part is present and a spatial insulation distance is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductor supporting insulator for supporting a conductor.

[0002]

2. Description of the Related Art FIG. 11 is a side view showing an embodiment of a method for supporting a main circuit conductor in a switchgear using a conventional conductor supporting insulator (hereinafter abbreviated as Conventional Example 1). FIG.
In the figure, reference numeral 11 denotes an insulating conductor supporting insulator. Fillers 12, 12 are threaded into upper and lower ends of the conductor supporting insulator 11. The lower end of the conductor supporting insulator 11 is
Is fixed to the support frame 14 by screwing to the filling metal 12. Also, the main circuit conductor 15 in the switchgear
Are attached to the conductor supporting insulator 11 by screwing the bolts 16 to the filling metal 12.

Next, the procedure of a method for supporting the main circuit conductor 15 in the switchgear will be described. The conductor supporting insulator 11 is attached to the supporting frame 14 with bolts 13, a hole for attaching to the conductor supporting insulator 11 is formed in the main circuit conductor 15 disposed in the switchgear, and the main circuit is directly bolted to the conductor supporting insulator 11. The conductor 15 is attached and arranged.

FIG. 12 shows another method of supporting a main circuit conductor using a conventional conductor supporting insulator (hereinafter simply referred to as Conventional Example 2).
It is a side view which shows the implementation state of. In FIG.
Is an insulating conductor supporting insulator. Fillers 22 and 22 are threaded into upper and lower ends of the conductor supporting insulator 21. The lower end of the conductor supporting insulator 21 is fixed to a supporting frame 23 via a filling metal 22. An L-shaped support fitting 24 is fixed to the upper end of the conductor supporting insulator 21 by screwing a bolt 25 to the filling metal 22. The main circuit conductor 26 in the switch gear is attached to the support fitting 24 by a bolt 27.

Next, a procedure of a method of supporting the main circuit conductor 26 with the switchgear will be described. The conductor support insulator 21 is mounted on the support frame 23, the support bracket 24 is mounted on the conductor support insulator 21 with bolts 25, and a hole for mounting the support bracket 24 on the main circuit conductor 26 disposed in the switchgear is provided. The main circuit conductor 26 is attached to the metal fitting 24 by a bolt 27 and arranged.

[0006]

Since the conventional method of supporting the main circuit conductors is as described above, when supporting the main circuit conductors 15 and 26 in the switchgear, the main circuit conductors 15 and 26 in both the conventional examples 1 and 2 are used. It is necessary to provide fixing holes in the conductors 15 and 26, and it is necessary to fix the conductors 15 and 26 with the support fitting 24 in the second conventional example.

[0007] In each of the conventional examples 1 and 2, the conductor supporting insulator 1 is used.
It is necessary to provide fillings 12 and 22 in 1, 21 not only increases the cost but also the main circuit conductor 1 which is an insulating conductor.
When supporting the metallization 5, 26, there is a problem that the fillings 12, 22 have an intermediate potential, leading to dielectric breakdown of the insulator, and the insulation performance cannot be maintained. In order to cope with this problem, the insulation is eliminated only at the fixed portion and the potential is set to the same as that of the bare charging portion.

Further, in the conventional example 1, when the conductor supporting insulator 11 is attached to the supporting frame 14, the supporting frame 1
4 needs to be fixed with bolts 13 from the back side, and the workability is poor.

[0009] The present invention has been made in view of the above circumstances, and by providing a hole capable of penetrating and supporting a plurality of types of conductors, it is possible to eliminate the filling metal, and to provide a bolt, a support bracket, and the like. It is an object of the present invention to provide a conductor supporting insulator which does not require the fixing member and can easily support various types of conductors.

Another object of the present invention is to reduce the amount of insulating material to be used by making the shape of the body into a cross shape.
An object of the present invention is to provide a conductor supporting insulator which can reduce costs.

Still another object of the present invention is to provide a conductor supporting insulator which is capable of assembling conveniently by forming a part of a fixing portion to an external body such as a supporting frame into a U-shaped slit. It is in.

[0012]

According to a first aspect of the present invention, there is provided a conductor supporting insulator, wherein a hole for penetrating and supporting a conductor is provided.

In the conductor supporting insulator according to the first aspect of the invention, one or a plurality of conductors are supported through the holes. Therefore,
The conductor in the switchgear can be easily supported without using a special member such as a bolt and a support fitting as in the related art. In addition, the space insulation distance can be reduced by eliminating the filler metal of the conductor supporting insulator, and the insulated conductor can be held as it is.

According to a second aspect of the present invention, in the conductor supporting insulator according to the first aspect, in order to support a plurality of types of conductors having different shapes, the periphery of the hole has a curved shape having a partially different pattern. Features.

In the conductor supporting insulator of the second invention, the shape of the hole is set so as to be compatible with a plurality of types of conductors. Thus, various conductors can be supported, and various arrangements of the conductors in the switchgear are possible.

A conductor supporting insulator according to a third invention is characterized in that, in the first invention or the second invention, the shape of the trunk is a cross-shaped cross section.

In the conductor supporting insulator according to the third aspect of the present invention, the body for maintaining strength has a cross-shaped cross section. Therefore, it is possible to reduce the amount of insulating material to be used as compared with the case where the shape is cylindrical.

According to a fourth aspect of the present invention, there is provided the conductor supporting insulator according to any one of the first to third aspects, further comprising a fixing portion fixed to the outer body, and a part of the fixing portion is formed into a U-shaped slit. It is characterized by having been done.

In the conductor supporting insulator according to a fourth aspect of the present invention, a portion fixed to the external body is formed into a U-shaped slit. Therefore, the work of attaching to the external body from the conductor supporting insulator side becomes possible, and the working efficiency can be improved.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings showing the embodiments. FIG. 1 (a),
2B is a front view and a side view of the conductor supporting insulator of the present invention, and FIGS. 2A and 2B are top views of the conductor supporting insulator of the present invention.
It is a bottom view.

In the upper part (head) of the conductor supporting insulator 1, there are formed holes 1a for penetrating and supporting several types of main circuit conductors in the switchgear. The periphery of the hole 1a has a shape in which arcs of various diameters are connected, and one or a plurality of main circuit conductors of various shapes can be penetrated and supported.

Further, the central part (body part) of the conductor supporting insulator 1
Is provided with a cross-shaped reinforcing member 1b for maintaining strength. Also, the lower part (foot part) of the conductor supporting insulator 1
Is a fixing portion to the support frame 3, which will be described later. U-shaped slits are formed at four positions of the fixing portion, and a screw fixing portion 1c is formed.

The conductor supporting insulator 1 having the above-described structure is integrally formed using an epoxy resin-based / glass-based polyester resin-based molding material.

Next, a method of supporting the main circuit conductor in the switchgear using the conductor supporting insulator 1 having such a configuration will be described. 3 and 4 are a side view and an enlarged front view showing an embodiment of an example of a method for supporting a main circuit conductor. In the example shown in FIGS. 3 and 4, two main circuit conductors 2 and 2 are supported in the horizontal direction by penetrating through the hole 1 a of the conductor supporting insulator 1.

FIGS. 5 and 6 are a side view and an enlarged front view showing another embodiment of the method of supporting the main circuit conductor. In the examples shown in FIGS. 5 and 6, one main circuit conductor 2 is vertically supported by being passed through a hole 1 a of the conductor supporting insulator 1.

FIGS. 7 to 10 are enlarged front views showing still another embodiment of the method of supporting the main circuit conductor.
In the example shown in FIG. 7, one main circuit conductor 2 having the same width as the examples shown in FIGS.
To support it. In the example shown in FIG. 8, one main circuit conductor 2 narrower than the example shown in FIG.
The conductor support insulator 1 is supported by penetrating through the hole 1a. In the example shown in FIG. 9, one main circuit conductor 2 wider than the examples shown in FIGS.
To support it. In the example shown in FIG.
The two main circuit conductors 2 having the same width as the example shown in FIG.
The conductor support insulator 1 is supported by penetrating through the hole 1a.

Thus, the main circuit conductor 2 to be supported is
The mounting method (horizontal mounting, vertical mounting), the size (narrow, wide), and the number (one or two) can be selected according to the current flowing. The shape of the hole 1a of the conductor supporting insulator 1 and the mounting example of the main circuit conductor 2 are merely examples, and it goes without saying that the present invention is not limited to these.

Next, a procedure for supporting the main circuit conductor 2 will be described. First, the conductor supporting insulator 1 is fixed to the supporting frame 3 by the fixing bolt 4 via the screw fixing portion 1c of the conductor supporting insulator 1 (see FIGS. 3 and 5). At this time, by using a welding nut or a nut sert on the support frame 3 side, all of the fixing work can be performed from the conductor supporting insulator 1 side, and the working efficiency is good. Further, the mounting position of the conductor supporting insulator 1 on the supporting frame 3 can be determined by moving the fixing bolt 4 within the screw fixing portion 1c of the U-shaped slit.

Then, one or a plurality of main circuit conductors 2 to be supported disposed in the switchgear are supported by penetrating through the holes 1a of the conductor supporting insulator 1. At this time, hole 1
One or more main circuit conductors 2 can be supported by the conductor supporting insulator 1 without using fixing members such as bolts and support fittings by utilizing the arcuate shape of the periphery of a. Further, various main circuit conductors 2 can be supported on the conductor supporting insulator 1 irrespective of their size, shape, and number, including the above-described supporting examples.

Since the main circuit conductor 2 does not need to be fixed by screws when it is supported, when the insulated main circuit conductor 2 is used, it is possible to support the main circuit conductor 2 in an insulated state. This makes it possible to shorten the spatial insulation distance between the other main circuit conductors and the surrounding ground metal as compared with the conventional example.

[0031]

As described above, in the conductor supporting insulator according to the first aspect of the present invention, since the holes for penetrating and supporting the conductor to be supported are provided, special members such as conventional bolts and support fittings are used. Without this, the conductor can be easily supported. Further, the space insulation distance can be reduced by eliminating the need for filling the conductor supporting insulator, and the insulated conductor can be held as it is. Further, since fixing members such as bolts and support fittings are not required, the number of parts and the working time can be reduced, and the cost of the switchgear can be reduced.

In the conductor supporting insulator according to the second aspect of the present invention, the shape of the hole to be formed is set so as to be compatible with a plurality of types of conductors, so that various types of conductors having different shapes can be supported. Various arrangements of the conductors in the switchgear are possible.

In the conductor supporting insulator according to the third aspect of the present invention, the cross section of the trunk portion for maintaining strength is formed in a cross shape, so that the amount of insulating material used can be reduced and the cost can be reduced. It is possible to plan.

Further, in the conductor supporting insulator according to the fourth aspect of the present invention, a part of a fixing portion of the supporting frame or the like to an external body is formed into a U-shaped slit. In addition, the work of attaching to the support frame from the conductor supporting insulator side can be performed, and the working efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a front view and a side view of a conductor supporting insulator of the present invention.

FIG. 2 is a top view and a bottom view of the conductor supporting insulator of the present invention.

FIG. 3 is a side view showing an example of supporting a main circuit conductor using the conductor supporting insulator of the present invention.

FIG. 4 is an enlarged front view showing an embodiment of a supporting example in FIG. 3;

FIG. 5 is a side view showing another example of supporting the main circuit conductor using the conductor supporting insulator of the present invention.

FIG. 6 is an enlarged front view showing an embodiment of a supporting example in FIG. 5;

FIG. 7 is an enlarged front view showing an embodiment of still another supporting example of the main circuit conductor using the conductor supporting insulator of the present invention.

FIG. 8 is an enlarged front view showing an embodiment of still another supporting example of the main circuit conductor using the conductor supporting insulator of the present invention.

FIG. 9 is an enlarged front view showing an embodiment of still another supporting example of the main circuit conductor using the conductor supporting insulator of the present invention.

FIG. 10 is an enlarged front view showing an embodiment of still another supporting example of the main circuit conductor using the conductor supporting insulator of the present invention.

FIG. 11 is a side view showing an example of supporting a main circuit conductor using a conventional conductor supporting insulator.

FIG. 12 is a side view showing an example of supporting a main circuit conductor using another conventional conductor supporting insulator.

[Explanation of symbols]

1 conductor insulator, 1a hole, 1b reinforcing member, 1c
Screw fixing part, 2 main circuit conductor, 3 support frame,
4 Fixing bolt.

Continuing from the front page (72) Inventor Junichiro Nishitani 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Masahiro Arioka 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Co., Ltd. In-company (72) Inventor Masaaki Takeshita 2-3-2 Marunouchi, Chiyoda-ku, Tokyo F-term in Mitsubishi Electric Corporation (reference) 5G016 AA01 DA02 5G331 AA06 BB32 CA01 DA04 EA16 EB13 5G365 DH15 DP01

Claims (4)

[Claims] 1. A conductor supporting insulator, wherein a hole is provided for supporting a conductor through. 2. The conductor supporting insulator according to claim 1, wherein the edge of the hole has a curved shape with a partially different pattern so as to penetrate and support a plurality of types of conductors having different shapes. 3. The conductor supporting insulator according to claim 1, wherein the body has a cross-shaped cross section. 4. The conductor according to claim 1, further comprising a fixing portion fixed to the outer body, wherein a part of the fixing portion is slit into a U-shape. Support insulator.