JPH01311806A - Gas insulation switchgear - Google Patents

Abstract

PURPOSE:To remove a breaker vessel simply by disposing expansible detachable bellows to a lead terminal section formed to one side face of the breaker vessel and composing one part of a conductor arranged into the lead terminal section of a detachable conductor. CONSTITUTION:Expansible detachable bellows 20 are disposed to a lead terminal section 9 shaped to the side face of a breaker vessel 1, and a line side equipment 10 is connected through the bellows 20. A conductor 21 arranged in the axial direction of the lead terminal section 9 of the breaker vessel 1 is connected to a conductor 12 connected to a moving side electrode 3, and led out to the line side equipment 10 through a detachable conductor 22 and a conductor 23. When a breaker is dismantled, the top cover 17 of the breaker vessel 1 is detached, the detachable conductor 22 is demounted, and the conductor 23 is removed. The detachable bellows 20 are compressed in the direction of the line side equipment 10, connection with the breaker vessel 1 is dismantled, and connection with main bus disconnectors 7, 8 is also demounted, and the whole breaker vessel 1 is moved to a position capable of being inspected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a gas insulated switchgear in which the connecting portion between a circuit breaker and another device is improved.

(Prior Art) In recent years, gas-insulated switchgears have been adopted in which a small number of devices are housed in a container filled with insulating gas. Typical configurations of such gas-insulated switchgear include, for example:
There is one as shown in Japanese Patent Application Laid-Open No. 187217/1983.

That is, as shown in FIG. 3, in the circuit breaker container 1, the circuit breaker 4 for each phase is housed to the right of the fixed side electrode 2 and the movable side electric constant 3 in the axial direction. Furthermore, outlet terminal portions 5 and 6 are formed on the side surfaces of the circuit breaker container 1, and are connected to main bus disconnectors 7 and 8, respectively. Roughly, one outlet terminal part 9 is formed on the opposing side surface, and the track side equipment 1
0 is connected.

Further, a current-carrying conductor 11 is connected to the fixed side electrode 2 of the interrupting section 4 of each phase in the axial direction of the circuit breaker container 1. This current-carrying conductor 11 is branched into two, and the lead terminal portion 5.6
It is led out to the main bus disconnectors 7 and 8. Roughly speaking, a ground contact portion 11a is formed at the lower terminal portion of the current-carrying conductor 11 of each phase.

On the other hand, a current-carrying conductor 12 is connected to the movable side conductor (to 3) in the axial direction of the cutoff 25i valley device 1, and the other end of this current-carrying conductor 12 is led out from the outlet terminal portion 9 to the track side equipment 10. Further, a ground contact portion 12a is formed at the lower terminal portion of the current-carrying conductor 12 of each phase.

Further, a movable ground contact 13i4 is disposed so as to be movable toward and away from these ground contact portions 11a and 12a. Note that these movable ground contacts 13 and 14 are configured to be individually driven by operating machine drawings 15 and 16, respectively. Moreover, in the upper part of the circuit breaker container 1,
A top lid 17 that can be opened and closed is provided.

(4 Problems to be Solved by the Invention) However, in the conventional gas insulated switchgear having the above-mentioned configuration, it is difficult to place the circuit breaker container adjacent to the When it becomes necessary to remove the main bus disconnect switch 7 from the track side equipment, the main bus disconnect switch 7 is connected to the eye terminals 5, 6.9 formed on the side surface of the circuit breaker container 1. .8 or the track side equipment 10 must be removed.

In that case, the main bus disconnect switch or track side equipment must be moved in parallel in the direction to remove it from the isolation vessel, which also affects other equipment connected to the main bus disconnect switch or track side equipment. It was supposed to be 1. In particular, a large amount of force is applied to the connection between the main bus disconnector or line-side equipment and the equipment connected thereto, causing the problem that airtightness cannot be maintained.

Further, the work time required to remove the main bus disconnector or track side equipment from the circuit breaker container was also long.

The present invention was proposed in order to solve the above-mentioned drawbacks, and its purpose is to remove the circuit breaker container from 11 m away,
Another object of the present invention is to provide a highly reliable gas-insulated switchgear.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides outlet terminal portions on both sides of a circuit breaker container housing a disconnection portion parallel to the axial direction, and one outlet terminal portion has a main In a gas-insulated switchgear in which a main bus is connected via a bus disconnector and a line side device is connected to the other outlet terminal, an outlet terminal formed on one side of the circuit breaker container is provided with: A removable bellow that is extendable and removable is provided, and a part of the current-carrying conductor disposed within the terminal portion is made up of a removable conductor.

(Function) According to the gas insulated switchgear of the present invention, when maintaining/inspecting the circuit breaker or when an accident occurs, the main C
Even if it becomes necessary to remove the 1-wire disconnector from the line-side equipment, the breaker container can be removed from the adjacent equipment by pulling the removable conductor out (), roughly, and compressing the removable roller. .

(Example) Hereinafter, an example of the present invention will be specifically described based on FIGS. 1 and 2. d3, members similar to those of the conventional type shown in FIG.

Configuration of this embodiment * In this embodiment, as shown in FIG. The track side equipment 10 is connected via this removable bellows 20.

Further, the current-carrying conductor 12 connected to the movable side electrode 3 is connected to a current-carrying conductor 21 arranged in the axial direction of the lead terminal portion 9 of the circuit breaker container 1, and roughly six removable conductors 22
The line side equipment 10G, l: is led out via the current-carrying conductor 23. Furthermore, the current-carrying conductor 21.23 and the detachable conductor 22
is fixed to Pole 1 by tightening.

Effect of this embodiment* In the gas insulated switchgear of this embodiment having such a configuration, the circuit breaker can be removed as follows.

That is, as shown in FIG. 2, first, the upper cover 17 of the circuit breaker container 1 is removed, the detachable conductor 22 connecting the current-carrying conductors 21 and 23 is removed, and then the current-carrying conductor 23 is removed.

Next, the detachable bellows 20 is compressed in the direction of the track-side equipment 10 to disconnect it from the circuit breaker container 1, and the entire circuit breaker container is slightly moved in the direction of the track-side equipment 10, and the main bus disconnector 7 is removed. , 8, move the breaker container 1 to a position where it can be inspected.

As described above, according to this embodiment, since the circuit breaker can be easily removed, maintenance/inspection work, repair work in the event of an accident, etc. can be performed easily and in a short time. Furthermore, since the airtightness of the equipment is maintained during operation of the gas insulated switchgear, excellent reliability can also be maintained.

*Other embodiments* Note that the present invention is not limited to the above-mentioned embodiments, and the attachment/detachment conductor and the attachment/detachment bellows may be installed at the outlet terminal portion 5°6 formed on the main bus disconnect switch side. good. Similar effects can be obtained in this case as well.

[Effects of the Invention] As described above, according to the present invention, a telescopic and detachable bellow is disposed on the lead terminal portion formed on either side of the circuit breaker container, and By simply configuring a part of the current-carrying conductor disposed in the lead-out terminal portion as a removable conductor, the circuit breaker case can be easily removed, and a highly reliable gas-insulated switchgear can be obtained. can be provided.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing one embodiment of the gas insulated switchgear of the present invention, Fig. 2 is a block diagram showing the embodiment of Fig. 1 with the circuit breaker removed from adjacent equipment, and Fig. 3 FIG. 1 is a configuration diagram showing an example of a conventional gas-insulated switchgear. DESCRIPTION OF SYMBOLS 1... Circuit breaker container, 2... Fixed side electrode, 3... Movable side electrode, 4... Breaking part, 5, 6... Lead terminal part, 7゜8... Main bus disconnect device, 9...output terminal section,
10... Track side equipment, 11... Current-carrying conductor, 11a.
...Ground contact portion, 12... Current-carrying conductor, 12a... Ground contact portion, 13, 14... Movable side ground contact, 15.
16... Operating mechanism, 17... Upper lid, 20... Detachable bellows, 21... Current-carrying conductor, 22... Detachable conductor, 2
3... Current-carrying conductor.

Claims (1)

[Scope of Claims] Outlet terminal portions are provided on both sides of the circuit breaker container housing the interrupting portion parallel to the axial direction, and a main bus is connected to one of the outlet terminals via a main bus disconnector, In a gas insulated switchgear in which track side equipment is connected to the other outlet terminal part, a retractable and detachable bellow is disposed in the outlet terminal part formed on either side of the circuit breaker container. Further, a gas insulated switchgear characterized in that a part of the current-carrying conductor disposed in the lead terminal portion is constituted by a detachable conductor.