JPH025603Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in gas insulated switchgear.
FIG. 1 is a cross-sectional view showing an example of a disconnector installed in a gas-filled sealed container as a conventionally used device of this type. A side three-phase conductor 5 and an output side three-phase conductor 6 are introduced, each conductor end being provided with a sliding contact 5a and 6a.

On the other hand, a sliding contact 9a is attached to an insulated operating rod 9 driven by a drive shaft 7 via an operating lever 8, and the movable contact is driven up and down and slides within the contact portion 5a of the input side three-phase conductor. The circuit is opened and closed by connecting and disconnecting the contact portion 6a of the output side three-phase conductor. This figure shows a case where the disconnector is in a closed state and a grounding device 10 is provided at the bottom of the container 2.

Here, the container 2 that houses the three-phase disconnector is large, so it requires a lot of effort to handle during assembly, and the assembly and inspection are performed only from one direction, that is, from above in the case of the illustration, so the work efficiency is poor. It was hot.

The present invention was devised to eliminate this type of drawback, and will be described in detail below.

FIG. 2 is a sectional view of an embodiment of the present invention, and FIG. 3 is a view in the direction of arrow A. Similar to FIG. 1, the input side three-phase conductor 5 and the output A pedestal 11a is provided in the main container 11 into which the side three-phase conductor 6 is introduced, and an auxiliary container 12 is attached to this to house the operating mechanism of the disconnector.

That is, the drive shaft 13 of the disconnector is connected to the auxiliary container 12.
The auxiliary container 1 is attached via the boss 12a attached to the side wall of
The movable contact 17 is introduced into
drive up and down. Note that reference numeral 18 denotes a guide rod provided as a guide for causing the three-phase connecting hardware 15 to directly operate.

In addition, the auxiliary container 12 is provided with an O
A common airtight container is formed with the main container 11 by a sealing means such as a ring 19, and the inside is filled with the insulating gas 1, and the auxiliary container 12 has a boss 12 for introducing the drive shaft.
A rotating airtight device is installed inside a to prevent leakage of insulating gas.

On the other hand, an intermediate conductor 21 fixed to the mounting plate 12b of the auxiliary container via an insulator 20 is provided on the main container 11 side, and one end of the intermediate conductor 21 is connected to the input side 3 by a contact 22.
A detachable connecting portion is formed on the phase conductor 5, and a sliding contact 23 is provided at the other end. The movable contact 17 is engaged with the sliding contact 23, and is slid downward to engage with the fixed contact 24 provided on the output side three-phase conductor 6, so that the disconnector becomes in a closed state.

With this configuration, the auxiliary container 12
drive shaft 13, drive lever 14, three-phase connecting hardware 1
5. It is assembled separately from the main container together with the insulated operating rod 16, the movable contact 17, and the intermediate conductor 21 fixed to the mounting plate 12b via the insulator 20.
Next, it is attached to the main container 11, and the intermediate conductor 21 is connected to the input side three-phase conductor 5 by the contactor 22, and the sliding contactor 23 is placed at a position corresponding to the fixed contactor 24 of the output side three-phase conductor 6. The disconnector is completed.

In this way, in the present invention, a separate auxiliary container 12 is added to the main container 11 that houses the disconnector, and the containers 11 and 12 form a common sealed container.
A disconnector operating mechanism is provided within the container 12. Therefore, the drive mechanism of the disconnector can be assembled and adjusted (centering, stroke adjustment, operation confirmation, etc.) while being housed in the auxiliary container separately from the disconnector main body. Further, in this case, the auxiliary container 12 can be held alone in an appropriate direction during the work, and work efficiency is significantly improved. In the above embodiments, a three-phase all-in-one type was explained as an example, but the same effect can be obtained by applying the same to a phase-separated type.

Next, FIG. 4 shows another embodiment, in which the intermediate conductor 26
is attached and fixed to an insulating stand 25 whose periphery is sandwiched and fixed between the connecting flanges of the main container 11 and the auxiliary container 12. The rest of the configuration is the same as in Figure 3,
The intermediate conductor 26 connects to the input conductor 2 via the contact 22.
It is detachably connected to 7. Also, the drive shaft 13
The movable contact 17 is connected to the sliding contact 2 provided on the intermediate conductor 26 via the lever 14 and the insulated operating rod 16.
3, and is driven downward to engage the fixed contact 24 provided on the output side conductor 28, and the disconnector becomes in a closed state.

As explained above, according to the present invention, the operating device of the disconnector is housed in the auxiliary container, making it easy to assemble and
Adjustments can be made.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing a conventional configuration example of this type of disconnector, Figs. 2 and 3 are a cross-sectional view and a view along arrow A of an embodiment of the present invention, and Fig. 4 shows another embodiment. FIG. 1... Insulating gas, 5... Input side 3-phase conductor, 6...
... Output side three-phase conductor, 11 ... Main container, 12 ... Auxiliary container, 13 ... Drive shaft, 17 ... Movable contact,
20... Insulator, 21... Intermediate conductor, 23... Sliding contact, 24... Fixed contact, 25... Insulating stand, 26... Intermediate conductor.

Claims (1)

[Claims for Utility Model Registration] (1) A main container and an auxiliary container which are joined together to form an airtight container and filled with an insulating gas, and which are introduced into the main container airtightly and have a connection part on one of them. An input conductor and an output conductor each having a fixed contact on the other side, an intermediate conductor having a connecting part and a sliding contact configured to be freely attachable and detachable to the above-mentioned connecting part, and housed in the above-mentioned auxiliary container and introduced airtightly from the outside. an operating mechanism operated by a driven shaft;
a movable contact driven by the operating mechanism to engage with the sliding contact and slide to engage with the fixed contact; the intermediate conductor is fixed to the auxiliary container via an insulator. A gas insulated switchgear characterized by: (2) The gas-insulated switchgear according to claim 1 of the utility model registration claim, characterized in that the intermediate conductor is attached and fixed to an insulating stand that is sandwiched and fixed between the joint portion of the main container and the auxiliary container. Device.