JPH08205338A - Gas insulated switchgear - Google Patents

Abstract

PURPOSE: To make the assembly work of a gas insulation switchgear easy and reduce the size of the switchgear by storing a breaker and a cable-side disconnector in a second insulating gas container which is separated from a first container wherein a bus-side disconnector is stored in insulating gas and partitioning the second container into a first unit for storing the breaker and a second unit for storing the cable-side disconnector. CONSTITUTION: In a first container 11 which is filled with insulating gas, a bus-side disconnector 2 and a bus 3 are installed. A second container 12 which is separated from the first container 11 and which is filled with insulating gas is constituted of a first unit 12a wherein a breaker 5 is assembled and which is connected with the first container 11 and a second unit 12b wherein a cable- side disconnector 6, etc., are assembled. The two units 12a, 12b are separable and they are connected into one body at a place denoted by symbol A. Due to this structure, a gas insulation switchgear can be assembled efficiently and its size can be reduced.

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 for opening and closing an electric circuit for receiving power via a connecting cable and distributing it to a busbar.

[0002]

2. Description of the Related Art FIG. 3 is a cross-sectional view showing the structure of a conventional gas-insulated switchgear of this type disclosed in, for example, Japanese Patent Application Laid-Open No. 5-304704, and FIG. FIG.

In the drawing, 1 is a first container filled with an insulating gas, 2 is a busbar-side disconnector which is housed in the first container 1 and connected to a busbar 3, and 4 is a first disconnector. The second container 5 and the second container 4 are separated from the container 1 in an atmosphere and are filled with an insulating gas similarly to the first container 1.
The circuit breaker, which is housed in one side and has one terminal 5a connected to the busbar-side disconnector 3, and 6 is housed in the other side of the second container 4 and connected to the other terminal 5b of the circuit breaker 5. It is a cable-side disconnector and is connected via a cable head 7 to a connection cable 8 arranged outside the second container 4.

In the gas-insulated switchgear configured as described above, power is received via the connection cable 8 and is distributed to the busbar 3 via the cable-side disconnector 6, the circuit breaker 5 and the cable-side disconnector 2. are doing.

Next, the assembling work of the conventional gas-insulated switchgear constructed as described above will be described with reference to FIG. First, the busbar-side disconnector 2 and the busbar 3 are housed in the first container 1 as indicated by S ₁ and S ₂ in the figure. Next, the circuit breaker 5 and the cable-side disconnecting switch 6 are carried in through the opening provided above the second container 4 as indicated by S ₃ in the figure, and the assembling work is performed in the container as shown in FIG. I do. Next, after attaching the first container 1 in which the busbar-side disconnector 2 and the like are housed as described above to the upper part of the second container 4 as indicated by S ₄ in the drawing,
The first container 1 is covered and each opening of the second container 4 is sealed to complete the assembly.

[0006]

Since the conventional gas-insulated switchgear is constructed as described above, the busbar side disconnector 2 and the busbar 3 are inserted into the first container 1 from above, and the circuit breaker is also inserted. 5 and the cable-side disconnector 6 are inserted from above the second container 4, and a worker must enter the second container 4 to perform work, resulting in poor work efficiency.
Further, there is a problem that the second container 4 has to be enlarged by the work space.

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 capable of improving assembly work efficiency and downsizing. is there.

[0008]

A gas-insulated switchgear according to claim 1 of the present invention comprises a first container in which a busbar-side disconnector connected to a busbar is housed in an insulating gas atmosphere, and a first container.
In the insulating gas atmosphere, which is partitioned from the container of No. 2, the circuit breaker whose one terminal is connected to the bus-side disconnector and the cable-side disconnector which is connected to the other terminal of the circuit breaker are accommodated respectively. In a gas-insulated switchgear consisting of a container, the second container can be divided into a first unit in which a circuit breaker is housed and a second unit in which a cable-side disconnector is housed.

In the gas-insulated switchgear according to claim 2 of the present invention, the first container in which the busbar-side disconnector connected to the busbar is housed in the insulating gas atmosphere, and the first container A second container in which a circuit breaker having one terminal connected to the bus-side disconnector and a cable-side disconnector connected to the other terminal of the circuit breaker are housed in a partitioned insulating gas atmosphere. In a gas-insulated switchgear, both containers can be divided into a plurality of units, and a busbar-side disconnector, a circuit breaker, and a cable-side disconnector are incorporated in each unit so that each unit is integrated.

A gas-insulated switchgear according to claim 3 of the present invention is the gas-insulated switchgear according to claim 1 or 2, wherein one terminal of the circuit breaker and the bus-side disconnector, and the other terminal of the circuit breaker and the cable-side disconnector. Are connected by tulip contacts.

[0011]

The second container of the gas insulated switchgear according to claim 1 of the present invention is divided into a first unit for accommodating the circuit breaker and a second unit for accommodating the cable-side disconnector. .

Further, the container of the gas-insulated switchgear according to claim 2 of the present invention is divided into a plurality of units, and the respective devices are incorporated and then integrated.

Further, the tulip contact of the gas-insulated switchgear according to claim 3 of the present invention automatically makes an electrical connection between each device incorporated in each unit.

[0014]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view showing the structure of a gas-insulated switchgear according to Embodiment 1 of the present invention, and FIG. 2 is a diagram showing an outline of an assembly process of the gas-insulated switchgear in FIG.

In the figure, the same parts as those of the conventional device shown in FIG. Reference numeral 11 denotes a first container in which an insulating gas is filled and which houses the busbar-side disconnector 2 and the busbar 3 therein, and 12 is separated from the first container 11 in an atmosphere and is similar to the first container 11. A second container 12a in which a circuit breaker 5 is incorporated and is connected to the first container 11 and a second unit 12b in which a cable side disconnector 6 and the like are incorporated, which are second containers filled with insulating gas. And both units 12a, 1 at the position indicated by A in the figure.
2b are connected and integrated.

The first embodiment constructed as described above
In the gas-insulated switchgear in 1 above, similarly to the conventional device, power is received via the connection cable 8 and is distributed to the busbar 3 via the cable-side disconnector 6, the circuit breaker 5, and the busbar-side disconnector 2.

Next, the assembling work of the gas-insulated switchgear according to the first embodiment constructed as described above will be described with reference to FIG. First, as indicated by S ₁₁ in the figure, the second container 12
The busbar-side disconnector 2 and the busbar 3 are mounted on the upper plate of the second unit 12a of FIG. Next, as shown in the figure S _12, S _13, the circuit breaker 5 to the side plate of the first unit 12a, also incorporates respectively a cable-side disconnector 6 in the second unit 12b. Then, the respective units assembled as shown at S ₁₁ and S ₁₂ are integrated as shown at S ₁₄ in the figure, and the openings are sealed to complete the assembly.

As described above, according to the first embodiment, the second container 12 can be divided into the first unit 12a and the second unit 12b.
Since the circuit breaker 5 is incorporated into the second unit 12b and the cable-side disconnector 6 is incorporated into the second unit 12b, the work efficiency is improved and the operator is not required to use the second container 12b. Since it is not necessary to enter the inside of the container 12 to work, the second container 12
Can be miniaturized.

Example 2. In the first embodiment, the case where the second container 12 is divided into the first unit 12a and the second unit 12b has been described. However, the second container 12 may be appropriately divided according to the number of storage devices and the arrangement condition. Needless to say, the same effect as that of the above-described first embodiment can be obtained.

Example 3. Further, in each of the first and second embodiments,
Although the case where the second container 12 is divided has been described, it is needless to say that the present invention can be applied to the case where the first container 11 is divided.

Example 4. Moreover, in each of the above-mentioned Examples 1 to 3,
For example, the connection between the circuit breaker 5 and the bus-side disconnector 2 and the connection between the circuit breaker 5 and the cable-side disconnector 6 incorporated in each unit were not described in detail.
If these connections are made by using tulip contacts, the units can be automatically connected at the time of connecting the units, and the working efficiency is further improved.

[0022]

As described above, according to claim 1 of the present invention, the first container in which the busbar-side disconnector connected to the busbar is housed in the insulating gas atmosphere, and the first container A second container in which a circuit breaker with one terminal connected to the bus-side disconnector and a cable-side disconnector connected to the other terminal of the circuit breaker are housed in a partitioned insulating gas atmosphere. In the gas-insulated switchgear according to the present invention, since the second container can be divided into the first unit in which the circuit breaker is housed and the second unit in which the cable side disconnector is housed, the assembly work efficiency is improved and the size is reduced. It is possible to provide a gas-insulated switchgear capable of achieving the above.

Further, according to claim 2 of the present invention, the first container in which the busbar-side disconnector connected to the busbar is housed in the insulating gas atmosphere, and the first container is partitioned and insulated. Gas-insulated switchgear comprising a circuit breaker having one terminal connected to the bus-side disconnector and a second container accommodating the cable-side disconnector connected to the other terminal of the circuit breaker, respectively, in a volatile gas atmosphere In the above, both containers can be divided into a plurality of units, and a busbar-side disconnector, a circuit breaker, and a cable-side disconnector are installed in each unit, respectively, so that each unit is integrated. It is possible to provide a gas-insulated switchgear that can be downsized.

According to claim 3 of the present invention, in claim 1 or 2, one terminal of the circuit breaker and the bus-side disconnector, and the other terminal of the circuit breaker and the cable-side disconnector are respectively tulip contacts. Since the connection is made by means of the above, it is possible to provide a gas-insulated switchgear which can not only be downsized but also can be particularly improved in work efficiency.

[Brief description of drawings]

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

FIG. 2 is a diagram showing an outline of an assembling process of the gas-insulated switchgear in FIG.

FIG. 3 is a sectional view showing a configuration of a conventional gas-insulated switchgear.

FIG. 4 is a diagram showing an outline of an assembly process of the gas insulated switchgear in FIG.

[Explanation of symbols]

2 busbar side disconnectors, 3 busbars, 5 circuit breakers, 6 cable side disconnectors, 7 cable heads, 8 connection cables,
11 1st container, 12 2nd container, 12a 1st unit, 12b 2nd unit.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Masayoshi Nishizaki 8 Horai-cho, Marugame City Marugame Plant, Mitsubishi Electric Co., Ltd. (72) Toshifumi Sato 8 Horai-cho Marugame City, Marugame Plant, Mitsubishi Electric Corporation ( 72) Inventor Masafumi Uesa 8 Horai-cho, Marugame City Marugame Plant, Mitsubishi Electric Co., Ltd. (72) Masahiro Yonezawa 8 Horai-cho Marugame City, Marugame Plant, Mitsubishi Electric Corporation

Claims (3)

[Claims] 1. A first container containing a busbar-side disconnector connected to a busbar in an insulating gas atmosphere, and one terminal in an insulating gas atmosphere partitioned from the first container. A gas-insulated switchgear comprising a circuit breaker connected to the busbar-side disconnector and a second container accommodating a cable-side disconnector connected to the other terminal of the circuit breaker. The gas-insulated switchgear can be divided into a first unit in which the circuit breaker is housed and a second unit in which the cable-side disconnector is housed. 2. A first container accommodating a busbar-side disconnector connected to a busbar in an insulating gas atmosphere, and one terminal in an insulating gas atmosphere partitioned from the first container. A gas-insulated switchgear comprising a circuit breaker connected to the bus-side disconnector and a second container accommodating a cable-side disconnector connected to the other terminal of the circuit breaker. And a bus-side disconnector, a circuit breaker, and a cable-side disconnector are incorporated into each of the units to integrate the units. 3. The circuit breaker according to claim 1, wherein one terminal of the circuit breaker and the bus-side disconnector are connected to each other by tulip contacts, and the other terminal of the circuit breaker is connected to the cable-side disconnector. Gas insulated switchgear.