JPS6023571B2 - gas insulated equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrical connection structure between containers in gas-filled equipment.

FIG. 1 shows a connecting portion of a container that serves as a grounding jacket for a conventional gas insulated bus bar.

In the figure, 1 and 2 are cylindrical containers, each with a flange a.
and 2a. 3 is a conical electrically insulating spacer for supporting the bus conductor and has the same outer diameter as flanges a and 2a.

The containers 1 and 2 are hermetically connected by bolts 4 with a flange 3a of an electrically insulating spacer 3 interposed between opposing surfaces of the flanges la and 2. Reference numeral 5 denotes an internal conductor, that is, a bus conductor, which extends inside the containers 1 and 2 in which an insulating gas 6 is filled, passing through its marquee.

Reference numeral 7 denotes a short-circuiting bar, which is disposed across flanges a and 2a, and is connected and fixed to the outer circumferential surfaces of containers 1 and 2 using presser metal fittings 8 and receiving metal fittings 9, respectively, to electrically connect containers 1 and 2. connected.

1. It is a river ring.

In this way, in the past, a lightning path was formed between the containers 1 and 2 by connecting them outside of the containers 1 and 2 using the shorting bar 7, which required a large number of parts and man-hours, and the appearance of the container connecting portions. The drawback was that it was complicated.

This invention eliminates the above-mentioned drawbacks of the conventional ones, and includes providing one or more through holes in an electrically insulating spacer.
By placing a conductor in this through-hole and forming a lightning path between the two containers via this conductor, airtightness can be lost with fewer parts and fewer man-hours compared to conventional methods. An object of the present invention is to provide gas insulating equipment in which an open circuit is formed between containers without the need for an open circuit.

Hereinafter, one embodiment of this invention will be described with reference to the drawings.

In FIGS. 2 and 3, reference numeral 11 indicates an electrical contact having a predetermined length having spring characteristics, and reference numeral 12 indicates one or more through holes formed in the flange 3a of the electrically insulating spacer 3.

The containers 1 and 2 are electrically connected by inserting an electrical contact, such as a coil spring 11, which is longer than the axial length of the through hole 12 into the through hole 12 of the electrically insulating spacer 3, and then tightening it with a bolt 4 as in the conventional case. They are firmly interconnected via an insulating spacer 3. 13 is a through hole for the bolt 4.

According to this configuration, the flanges a and 2a and the through hole 12
Since the electrical contact 11 is sealed in a compressed state in the space formed by the inner surface of is in effective contact with both flanges la and 2a, forming a military route between containers 1 and 2.

When the flange 3a of the electrically insulating spacer is made of metal, is it possible to provide a circular electrical contact on the joint surface of the flange 3a and the flanges la and 2a of the container? In this case,
Since a recess for embedding the electric contact must be formed in at least one of the joint surfaces, processing and assembly are more complicated than in the embodiment.

As described above, according to the present invention, one or more through holes are provided in an electrically insulating spacer for supporting a conductor, and an electric contact having a mimicry characteristic is placed in the through hole. After that, an electric path is formed between the containers by simply connecting the containers to each other via the electrically insulating spacer using the same connecting means as the conventional connecting means. Compared to the conventional case in which members are disposed between containers, the electric circuit can be formed with a much smaller number of parts, fewer man-hours, and without losing airtightness.

Furthermore, since there is no member for forming a turtle path on the outside of the container, there is an advantage that the connecting portion is simple in appearance. Figure 4 shows
This shows an embodiment of another invention. In the figure, reference numeral 14 denotes a conductive embedded metal fitting having a length not longer than the through hole 12, and is embedded in the through hole 12 of the electrically insulating spacer 3. Reference numeral 15 denotes a recess for holding an electrical contact, and one or more recesses are provided on the opposite surface of the flange 2a of the flange la of the container 1 at predetermined locations corresponding to the positions of the through holes 12 of the electrically insulating spacer 3. It is formed with depth.

There is also a recess 15 on the surface of the flange 2a facing the flange la.
A corresponding recess 16 is provided. This recess 1
5 and 16 can be provided when forming the through hole 13, so there is no need for a large or medium increase in the number of man-hours. Reference numeral 17 denotes an electric contact which has a spring characteristic in the direction of the marquee line of the containers 1 and 2, and is fitted into the recess 15 with a part contacting the inner surface of the recess 15 and a part protruding from the recess 15.

Reference numeral 18 denotes an electric contact equivalent to the electric contact 17 and is fitted into the recess 16 in the same manner.

Various types of electrical contacts 17 and 18 are used, such as a disc spring type as shown in Fig. 5, a shutter type as shown in Fig. 6, a leaf spring type as shown in Fig. 7, and a coil spring type. be able to. FIG. 8 shows the disc spring type electric contact 17 shown in FIG. 5 housed in the recess 15. As shown in FIG. In this way, electrical contacts 17 and 18 are placed in the recesses 15 and 16, respectively.
After storing the electrical contacts 17 and 18 into the embedded fittings 14
The containers 1 and 2 are firmly connected via the electrically insulating spacer 3 by bolts 4 in a state in which the containers 1 and 2 are opposite each other. In this configuration, the container 1,
A military road is formed between the two.

Furthermore, since the electric pongee 17 and 18 have spring characteristics, the space between the containers 1 and 2 can be made airtight. According to this invention, although the number of parts and the number of man-hours are slightly increased compared to the case of the above-mentioned invention, there is an added advantage that electrical contacts of various shapes can be used.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a conventional gas insulated device, FIG. 2 is a longitudinal cross-sectional view of essential parts of an embodiment of the gas insulated device according to the present invention, and FIG. 3 is a view taken along the line A-A in FIG. 4 are vertical sectional views of essential parts of an embodiment of gas insulated equipment according to the present invention, FIGS. 5 to 7 show examples of electrical contacts, and FIG. 8 shows electrical contacts. FIG. In the figure, 1 and 2... Container, 3... Electrical insulating spacer, 11, 17 and 18... Electric contact, 12... Through hole, 14・・・・・・
Embedded metal fittings, 15 and 16... recess. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. 1st
Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] 1. In a gas-filled device that airtightly connects containers to each other via an electrically insulating spacer, the electrically insulating spacer is provided with one or more through holes, and the through hole is formed by the mutually opposing surfaces of the container. Gas insulated equipment, wherein an electrical contact having a spring characteristic is housed in the cavity and facing the through hole, and the electrical contact electrically short-circuits both the containers.