JPH09215158A - Gas insulated switchgear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a gas insulated switchgear for facilitating the work while enhancing the reliability by forming a supporting member for conductor integrally with any one enclosure at a coupling part. SOLUTION: Insulating enclosures 11, 12, 13 made of a fiber reinforced resin and integrated through coupling are provided, at the opposite coupling parts thereof, with flanges 11a, 11b, 12a, 12b, 13a, 13b. The flanges 11b, 12a, and 12b, 13a are sealed by an O-ring fitted in an annular groove made in any one abutting face. Supporting members 14, 15 projecting inward from the inside of respective flanges 12a, 13a of both enclosures 12, 13 are similarly made of a fiber reinforced resin and formed integrally therewith. Connecting conductors 16, 17 penetrate the central part of supporting members 14, 15 and have opposite ends 16a, 16b and 17a, 17b projecting, respectively, toward the enclosures 11, 12 and 12, 13 sides.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-insulated switchgear in which a conductor supported by a support member is arranged to penetrate through a container in which an insulating gas is sealed.

[0002]

2. Description of the Related Art FIG. 6 shows, for example, Japanese Utility Model Laid-Open No. 61-156424.
FIG. 7 is a cross-sectional view showing the configuration of the conventional gas-insulated switchgear shown in the publication, and FIG. 7 is a cross-sectional view showing the configuration of the main part of the gas-insulated switchgear in FIG. In the figure, reference numerals 1, 2, and 3 are containers that are connected and integrated, and flanges 1a, 1b, 2a, 2b, 3a, and 3b are formed at both end connecting portions, respectively. Both flanges 1a and 3b are not shown.

Reference numeral 4 denotes a support member made of an insulating member, the outer peripheral side of which is sandwiched by the respective flanges 1b and 2a of the adjacent containers 1 and 2, and both ends 6a and 6b are located inside the containers 1 and 2 at the center. The projecting connection conductors 6 are fixed to the flanges 1b and 2a, respectively, and annular grooves 4a are formed on the surfaces abutting the flanges 1b and 2a, respectively, and a sealing material (not shown) is interposed in the grooves 4a. By inserting the O-ring 5 in the container 1, 2, 3 is sealed, and the insulating gas is sealed. Reference numerals 7, 8 and 9 are conductors which are respectively arranged in the respective containers 1, 2 and 3 and which are electrically connected by being connected to both connection conductors 6 and 6. Each container 1, 2, 3 is connected to the ground so as to keep the same potential as the ground potential.

Next, the procedure for assembling the conventional gas-insulated switchgear constructed as described above will be described. First, a sealing material (not shown) such as silicon rubber is applied to the inner surfaces of the grooves 4a and 4a formed on both sides of the support member 4, and O is filled inside.
The ring 5 is attached to connect one end 6a of the connecting conductor 6 to the conductor 7 prepared in the container 1, and the outer peripheral portion of one surface of the support member 4 is attached to the flange 1b of the container 1 as shown in FIG. Abut. Next, the other end 6b of the connection conductor 6 is connected to the conductor 8 prepared in the container 2, and
The flange 2a of the container 2 is provided on the outer peripheral portion of the other surface of the support member 4.
Are brought into contact with each other, and the flange 1b, the outer peripheral portion of the support member 4, and the flange 2a are integrally tightened with a bolt (not shown), so that the containers 1 and 2 are connected.

Thereafter, similarly to the above, a sealing material (not shown) is applied to the inner surfaces of the both grooves 4a, 4a, and the O-ring 5 is applied inside.
The outer peripheral portion of one surface of the supporting member 4 on which is attached is brought into contact with the flange 2b of the container 2, and at the same time, one end 6a of the connecting conductor 6 is connected to the conductor 8 and then prepared in the container 3. The other end 6b of the connection conductor 6 is connected to the conductor 9, and the flange 3a of the container 3 is brought into contact with the outer peripheral portion of the other surface of the support member 4, and the flange 2b, the outer peripheral portion of the support member 4, and the flange 3a are bolted. Both containers 2 and 3 are connected by tightening together. When the required number of containers are connected, the insulating gas is filled in each container at a predetermined pressure, and the assembly is completed.

[0006]

Since the conventional gas-insulated switchgear is constructed and assembled as described above, both sides of the outer peripheral portion of the supporting member 4 and the adjacent containers 1 and 2 are adjacent to each other. The flanges 1b and 2a have to be connected while maintaining sufficient airtightness, and there is a problem that labor is required for the work and reliability is deteriorated if the airtightness is insufficient.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a gas insulated switchgear which is easy to work and whose reliability can be improved.

[0008]

According to a first aspect of the present invention, there is provided a gas-insulated switchgear in which a plurality of containers are connected to each other through a connecting portion and are filled with an insulating gas. In a gas insulated switchgear in which a conductor supported by a projecting support member is provided so as to penetrate therethrough, the support member is integrally formed with one of the containers in the connecting portion.

A gas-insulated switchgear according to a second aspect of the present invention is the gas-insulated switchgear according to the first aspect, wherein the support member and the container are formed of an insulating member.

The gas-insulated switchgear according to claim 3 of the present invention is the gas-insulated switchgear according to claim 2, wherein a reinforced fiber resin is used as the insulating member.

Further, a gas-insulated switchgear according to a fourth aspect of the present invention is the gas-insulated switchgear according to the second or third aspect, wherein a conductive member is attached to the outer surface of the container.

A gas-insulated switchgear according to a fifth aspect of the present invention is the gas-insulated switchgear according to the first aspect, in which the container is formed of a metal member and the support member is formed of an insulating member, and is integrated by casting. is there.

Further, a gas-insulated switchgear according to a sixth aspect of the present invention is the gas-insulated switchgear according to the first aspect, wherein the support member is formed so as to project from the inner wall of the container.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a sectional view showing a structure of a gas insulated switchgear according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view showing an assembling procedure of the gas insulated switchgear in FIG.

In the figure, reference numerals 11, 12 and 13 denote insulating containers made of reinforced fiber resin and integrated by connecting them, and flanges 11a and 11a are provided at both end connecting portions, respectively.
11b, 12a, 12b, 13a, 13b are formed. Although not shown, both flanges 11
Between b, 12a and 12b, 13a is sealed by an O-ring mounted in an annular groove formed on one of the contact surfaces, as in the case of the conventional device. Both flanges 11a and 13b are not shown.

Reference numerals 14 and 15 denote support members formed so as to project from the inside of the respective flanges 12a and 13a of both the containers 12 and 13, and are made of a reinforced fiber resin in the same manner as the containers 12 and 13, respectively. It is formed integrally. 16, 17
Penetrates through the central portions of the respective support members 14 and 15, and both ends 16
a, 16b and 17a, 17b are connecting conductors formed so as to project toward the respective containers 11, 12 and 12, 13 respectively, and 18, 19, 20 are respectively arranged in the respective containers 11, 12, 13 and both connecting conductors are provided. Conductors that are electrically connected by connecting with 17, 18 and 21, 22 and 23 are conductive members made of, for example, aluminum and attached to the outer surfaces of the containers 11, 12 and 13, and are connected to the ground. It is held at the same potential as the ground potential.

Next, a procedure for assembling the gas-insulated switchgear according to the first embodiment having the above-described structure will be described. First, a seal material such as silicon rubber is applied into the groove formed on either surface of the flanges 11b and 12a, and an O-ring is attached to the inside to attach the conductor 18 arranged in the container 11. While connecting to one end 16a of the connection conductor 16, both flanges 11b and 12a are brought into contact with each other and integrally tightened with a bolt (not shown) to connect both containers 11 and 12. Then, next, one end of the conductor 19 arranged in the container 12 is connected to the other end 16b of the connection conductor 16.

Thereafter, in the same manner as described above, an O-ring is mounted inside the groove, one end 17a of the connecting conductor 17 is connected to the other end of the conductor 19, and both flanges 12b, 1b are connected.
3a are brought into contact with each other and integrally fastened with a bolt (not shown) to connect both containers 12 and 13. Then, one end of the conductor 20 arranged next in the container 13 is connected to the other end 17 of the connection conductor 17.
Connect to b. In this way, when the required number of containers have been connected, an insulating gas is filled in each container at a predetermined pressure to complete the assembly.

As described above, according to the first embodiment, since the support members 14 and 15 are the same members as and integrally formed with the containers 12 and 13, respectively, the containers 11, 12 and 12, 13 are formed. When connecting each of them, it suffices only to keep the airtightness between the flanges 11b, 12a and 12b, 13a which abut against each other. As in the conventional device, the airtightness is maintained between the flanges and the support member. Since it is not necessary to pay attention to the above, it is possible to improve the reliability, and the labor of the assembling work is halved, and the work becomes easy.

Further, since the conductive members 21, 22, 23 are adhered to the outer surface of each container 11, 12, 13 to be grounded, each container 11, 12, 13 is kept at the same potential as the ground. It is possible to improve safety. In the first embodiment, each container 11, 12, 13 and each support member 14, 15 are made of an insulating member. However, each container is made of a metal member and each support member is made of an insulating member. However, they may be integrated by casting, and of course, the same effects as those of the above-described first embodiment can be exhibited, and each container can be grounded without attaching a conductive member. .

Embodiment 2 FIG. 3 is a sectional view showing the structure of a gas insulated switchgear according to Embodiment 2 of the present invention. In the figure, reference numerals 24, 25 and 26 are made of reinforced fiber resin, and the respective flanges 24b, 25a and 25b, 26 are provided.
a container integrated by being connected via a, 2
Reference numeral 7 denotes a supporting member 28, 29, 30 formed by projecting from an inner wall of a central portion of the container 25 in the longitudinal direction.
A conductor connected by a connecting member 31 arranged in 26,
A central portion of the conductor 29 is supported by the support member 27. Although not shown, the remaining conductors 28 and 30 are also supported by support members formed so as to project from the inner walls of the containers 24 and 26.

As described above, according to the second embodiment, since the supporting member 27 is formed so as to project from the inner wall of the container 25, each container 2 is formed as in the case of the first embodiment.
Both flanges 24b, 25a and 25b, 26a abutting each other when connecting 4, 25 and 25, 26
Since it suffices to keep only the airtightness between them, it is possible to improve the reliability, and the work of connecting the support members is unnecessary, and the work of assembling work is halved and the work is easy. .

When the gas division in each container is unnecessary, a plurality of rod-shaped support members 32 may be projected from the inner wall of the container to support the conductor as shown in FIGS. 4 and 5. Needless to say, the same effects as described above can be obtained.

Furthermore, in each of the above first and second embodiments,
The case where one conductor is arranged in each container has been described. However, as in the case of the three-phase collective type, three conductors are arranged in each container.
The same effect as described above can be obtained even when the present invention is applied when the conductor of the book is arranged.

[0025]

As described above, according to the first aspect of the present invention, it is formed in a plurality of containers which are connected through the connecting portion and in which the insulating gas is sealed so as to project inward from the connecting portion. In the gas-insulated switchgear in which the conductor supported by the supporting member is provided so as to penetrate therethrough, since the supporting member is integrally formed with one of the containers in the connecting portion, the assembling work is easy and reliable. It is possible to provide a gas-insulated switchgear that can be improved.

According to a second aspect of the present invention, in the first aspect, the support member and the container are formed of an insulating member, so that the gas insulated switchgear can be easily assembled and the reliability can be improved. Can be provided.

According to the third aspect of the present invention, since the reinforced fiber resin is used as the insulating member in the second aspect, it goes without saying that the assembling work is easy and the reliability can be improved. That is, it is possible to provide a gas-insulated switchgear that is easy to process.

Further, according to claim 4 of the present invention, in claim 2 or 3, since the conductive member is adhered to the outer surface of the container, the assembling work is easy and the reliability is improved. It is of course possible to provide a gas-insulated switchgear capable of improving safety.

According to a fifth aspect of the present invention, in the first aspect, since the container is formed of a metal member and the support member is formed of an insulating member, and is integrated by casting, the assembling work is easy. In addition to being able to improve reliability, it is possible to provide a gas-insulated switchgear capable of improving safety.

According to a sixth aspect of the present invention, in the first aspect, since the supporting member is formed so as to project from the inner wall of the container, the gas can be easily assembled and the reliability can be improved. An insulating switchgear can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view showing a configuration of a gas insulated switchgear according to Embodiment 1 of the present invention.

FIG. 2 is a sectional view showing an assembling procedure of the gas-insulated switchgear in FIG.

FIG. 3 is a sectional view showing a configuration of a gas insulated switchgear according to Embodiment 2 of the present invention.

FIG. 4 is a sectional view showing a configuration of a modified example of the gas insulated switchgear according to Embodiment 2 of the present invention.

5 is a cross-sectional view showing a cross section taken along line VV in FIG.

FIG. 6 is a sectional view showing a configuration of a conventional gas-insulated switchgear.

7 is a cross-sectional view showing a configuration of a main part of the gas-insulated switchgear in FIG.

[Explanation of symbols]

11,12,13 container, 11b, 12a, 12b, 1
3a flange, 14, 15, 27, 32 support member,
16,17 connection conductor, 16a, 17a one end, 16
b, 17b the other end, 18, 19, 20 conductors, 21,2
2,23 conductive member.

Claims (6)

[Claims] 1. A conductor supported by a supporting member projecting inward from the connecting portion penetrates through a plurality of containers connected through a connecting portion and filled with an insulating gas. A gas-insulated switchgear provided in the gas-insulated switchgear, wherein the support member is formed integrally with any one of the containers in the connecting portion. 2. The gas insulated switchgear according to claim 1, wherein the support member and the container are formed of an insulating member. 3. The gas insulated switchgear according to claim 2, wherein the insulating member is a reinforced fiber resin. 4. The gas insulated switchgear according to claim 2, wherein a conductive member is attached to the outer surface of the container. 5. The gas-insulated switchgear according to claim 1, wherein the container is made of a metal member, and the support member is made of an insulating member, and is integrated by casting. 6. The gas insulated switchgear according to claim 1, wherein the support member is formed so as to project from the inner wall of the container.