JPS6158416A - Insulating spacer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to an insulating spacer, for example, an insulating spacer [conventional Technology] Conventionally, there is one insulating spacer for this building, for example.

There were some as shown in Figures 1 and 2.

That is, in Figure 1, the symbol l is an insulating spacer made of epoxy resin, λ is a current-carrying conductor that is a main conductor embedded so as to pass through this insulating spacer l, and J is a rod-shaped or tubular conductive material, and the above-mentioned current-carrying conductor is A shield ring body is embedded in an insulating spacer l surrounding λ, 7 is a lip attached to the mantissa part of this shield ring body 30, and 5 is a grounding filler metal attached to each rib. In this example, the ground fillet is installed along the shield ring body 3. 6 is a casting hole into which a bolt for fixing the insulating spacer is inserted. In addition, the above-mentioned shield ring main body 3.
A shield ring consisting of a lipstick and a ground filler metal 5 is shown in Figures 3 and B.

The above shield ring body J has an insulating spacer, an edge
Cape 711111 9. Burial jealousy ψ, wide Hanoha condolence kh lipda, burial gold! is electrically connected to.

Maintains ground potential.

Insulating space with this kind of structure! ? As shown in FIG. 41, "1" is shaped by the casting molds 7a and 7b.

At this time, the shield ring main body 3 is positioned by fixing the grounding filler metal 5 to the casting molds a and '7b.

However, in such conventional insulating spacers, since the shield ring main body is constituted by an annular integral structure, it is often difficult to position the ground filler during casting.

That is, it is difficult to fix all of the ground filler metal 5 fixed to the shield ring main body 3 by welding or the like to the casting mold, and also
Since it is rod-shaped and has a relatively large diameter, it has the disadvantage of poor reliability and productivity, such as a gap being likely to be formed at the interface with the insulating spacer l made of thermosetting resin such as epoxy resin during casting.

[Summary of the invention]

This invention eliminates the drawbacks of the conventional insulating spacer as described above, and provides a shield ring that allows easy installation of the ground filler into the casting mold and that does not create a gap between it and the molding resin.
This was done with the aim of obtaining an unparalleled spacer, and for this purpose, by making the shield ring body a coiled member, the position between the ground metals can be relatively freely adjusted when pouring. This makes it easier to install the shield ring's grounding metal, thereby improving work such as mold alignment and increasing productivity, as well as providing insulation that does not create a gap between the shield ring body and the molded sugar. It provides a spacer.

[Embodiments of the Invention] Hereinafter, a description will be given based on a diagram showing one implementation sequence of this publication arc.

Figures g-t~7 show a shield link 10 according to the present invention, where the symbol // is a coiled member formed by winding a wire into a helical spring shape, Hiroshi is a lip fixed to this coiled member l/, It is a grounding metal that is fixed to the link, and is a coiled member/
/ is its both ends /ltl.

They are interconnected at llb and formed into a ring shape.

The shield ring 10 configured in this way is as follows.

Then, in the same way as the conventional insulating spacer, it is placed in a casting mold and poured to obtain an insulating spacer as shown in the figure.

Note that the reference numeral 12 is an insulating spacer according to the present invention,
6 is a cast hole for a mounting bolt similar to a conventional insulating spacer.

An example of how to connect both ends /la and llb of the coiled member l/ of the shield ring IO is shown in Fig. 7 and Fig. 70.
La and the other end l/b are butted against each other, and both ends //a are inside.

A connecting coil member 1/ wound to a diameter that can be screwed like a screw onto the inner diameter of the coil member 1/ to which the llb is connected.
,? is screwed in.

The shield link 10 configured in this way is as follows.

The entire shield link 10 will be constructed in a uniform, substantially rod-like shape, and therefore will not fit into the insulating spacer. In the above embodiment, the connecting coil member 13 is used to connect both ends //a and //b of the coil member // to make the coil member // into a ring shape. However, the present invention is not limited to this. First, one end of the coiled member may be formed into a conical FcO, and this may be screwed into the inner diameter portion of the other end, and in this case as well, the same effect as in the above embodiment can be obtained.

In addition, the connecting coil member /J generally has 2 or more turns, 2
It is necessary to keep it to 0 volumes or less. This is 1 both ends //a, l
In order to attract lb, you need 2 or more volumes, and 1
If the number of turns is too large, the connecting part will be composed of a double coiled member, and therefore the rigidity will be higher than the other parts. It becomes difficult to obtain a ring shape.

Furthermore, in the above embodiments, a single-phase insulating spacer has been described, but the present invention is not limited to this.

The same @FC can also be used for three-phase conical or irregularly shaped insulating spacers, and the same effect can be achieved in that case as well. Therefore, even if the shield ring of the present invention is configured to have the same diameter as the conventional shield ring, the wire that makes up the coiled member has a thin wire diameter and can be easily bent, so that the grounding fillet can easily fit into the predetermined position (
In addition, the adhesion with the molding resin is improved, which improves the productivity of mold alignment, etc., and also has the effect of providing a high-quality insulating spacer with no gaps between the molding resin and the molding resin. are doing.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a conventional P-green spacer, and Fig. 2 is a plan view of a conventional P-green spacer.
A cross-sectional view along line ll-n-ff in the figure, Figure J A is g
Figure t is a plan view of the shield ring embedded in the insulating spacer 7-sa, Figure 3B is a cross-sectional view of the IITB-■B mausoleum in Figure 3A, and Figure q is the insulating spacer and the insulating spacer during conventional casting. FIG. 3 is a longitudinal cross-sectional view of the mold and the mold, and FIG.
The figure is a partially enlarged view of Fig. 5, and Fig. 7 is a sectional view taken along the line ■-■ of Fig. 6 - g4! , is a plan view of an embodiment of the insulating spacer of the present invention in which the shield ring of FIG. 5 is embedded. Figure 2 is an enlarged view of part ■ in Figure 5, Figure 10 is an enlarged view of part x in Figure 7.
-x,,i! ! 1 is a sectional view according to FIG. Hiro: Rib, S: Ground filler, 6: Casting hole. 10φ・Shield ring //*-Coil shaped member. //a, //bes end-/ 2Φm insulation spacer, /
3. Coiled member for connection. In each figure, the same reference numerals indicate the same or corresponding parts. Flood figure 3 Flood figure 5 Ngong 8 figure Flood figure 9 Tao O figure

Claims (2)

[Claims] (1) An insulating spacer used to support the main conductor and gas division of gas-insulated electrical equipment, and in which a shield is placed on the ground side at a predetermined insulation distance from the main conductor, and this is embedded by integral casting. An insulating spacer characterized in that the shield is formed into a ring shape by connecting both ends of a coiled member formed from a wire material into a helical spring shape. (2) The connection between both ends of the coiled member is made by screwing one end of the coiled member into the other end of the first claim.
Insulating spacer as described in section.