JPS6271407A - Gas insulated switching device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a gas insulated switchgear, and particularly to a gas insulated switchgear in which a disconnector and a grounding switch are arranged side by side in the same container or the same gas compartment, that is, a combined gas insulated switchgear. Regarding improvements that include equipment.

[Technical background of the invention and its problems]

Conventional gas insulated switchgear 2i (hereinafter abbreviated as GIS)
A typical layout is shown in FIG. G.I.
The dimension that S has on the building and site area is [, XH, assuming that the depth is the same, but with conventional thinking, further reduction was difficult. The configuration of this GISI is that a current transformer 3 is installed in the sunrise part 2a on the upper side of the new circuit switch 2, and the current transformer 3 is connected to one container 5a through two branch parts, that is, two protrusions 5-1°. 5-2 are provided, and the opening/closing mechanism parts of the new circuit switch and the earthing switch are respectively housed, thereby forming the disconnecting switch 5 with the earthing switch. This container 5a is then connected to the cable head 6. In addition, the lower outlet 2 of the circuit breaker 2
b is provided with a current transformer 3 and connected to the main bus 8 via a disconnector 7 with a grounding device. Especially the part of the container 5a.

Although the disconnector and the earthing switch are arranged side by side in the same container, so-called compounding, and the size is reduced, the branch part of the container that houses the opening and closing mechanism parts of the disconnector and the earthing switch, that is, the protruding part. 5-1.5-, there is a limit to how close the protrusions can be to each other due to the structure of the container, and it has been difficult to make the container smaller than the size shown in FIG.

[Purpose of the invention]

The present invention has been made in consideration of the above points, and its purpose is to provide a gas insulated switchgear in which the entire GIS is further downsized.

[Summary of the invention]

In order to achieve this object, according to the present invention, two sets of opening/closing mechanisms for a disconnector and a grounding switch are provided in one protrusion in order to utilize the empty space seen from the side of the GIS to reduce the size of the GIS. By accommodating the above, the entire GIS is downsized.

[Embodiments of the invention]

An embodiment of the gas insulated switchgear of the present invention will be described below with reference to FIGS. 1 to 3. The same parts or parts having the same functions as those in FIG. 5 are given the same reference numerals.

Although the present invention is applicable to a single-phase single-tank type switch, the effect is greater for a three-phase one-tank type switch.
The tank shape will be explained. The configuration of the gas insulated switchgear 1 (hereinafter abbreviated as GIS again) is that a current transformer 3 is provided at the sunrise part 2a on the upper side of the circuit breaker 2, and a current transformer 3 is provided at the sunrise part 2a on the upper side of the circuit breaker 2.
A disconnector with an earthing switch 10 provided with an opening/closing mechanism section 11-□ and an IL2 for a disconnector and an earthing switch is connected to one branch part 10-8 of one container 10. The earthing switch/disconnector 10 is connected to the cable pen 6. Further, a current transformer 3 is provided at the sunrise section 2b on the lower side of the circuit breaker 2, and is connected to the main bus 8 via a disconnector 7 with an earthing switch.

The new circuit switch 10 with an earthing switch has one branch part 10-1 in the container 10a, and inside this branch part 10-1, each opening/closing mechanism part IL1. IL2 is housed therein, and operating devices [12-, . . . IL2 are provided outside this branch portion 10-1, and are connected to opening/closing mechanism portions 11-0 and 11-2, respectively, as will be described later.

The opening/closing mechanism section 11-0 opens and closes the disconnecting section 11a via a movable rod 16 of a disconnecting switch using conductors 14 and 15 supported by insulating spacers 13 fixed to both ends of the container 10a. The disconnecting section 11a is provided on the conductor 15 side, and is opened and closed by rotating the movable rod 16 with the insulated operating rod 18 via the pinion rack mechanism 17. Also,
This constant operating rod 18 is connected to an opening/closing mechanism section 11-0 installed in a container 19 housed within the branch section 1o-1. Although the disconnection section 11a is configured in this way, the other two phases are also configured in the same manner, so the explanation will be omitted.

The opening/closing mechanism section 11-1 engages with a bevel gear 20b that meshes with a bevel gear 20a, and this bevel gear 20a is fixed to a main shaft 21 that is connected to an external operating device I Ll. A spur gear 22-1 is provided below the bevel gear 2θb, and this spur gear 22-1 meshes with spur gears 2:L, 2L, which are provided adjacently on both sides. The gear 23-2 is an adjacent spur gear 22-.
2, and the spur gear 221 meshes with the adjacent spur gear 2.
It is formed to interlock with 3 degrees. In addition, spur gear 23-
0.2:L, 2:L3 are formed to have the same dimensions,
The insulated operation pins of each phase are connected to each spur gear, and since the spur gears 2L1 and 2L2 are also formed to have the same dimensions, each phase is operated simultaneously by the operation of the operating device 12-1.

The opening/closing mechanism section 11□ is provided with a grounding/closing section 2G that is grounded/closed by a movable rod 25 on a conductor 14 supported by insulating spacers 13 fixed to both ends of the container 10a. This grounding switching section 26 is provided for each phase similarly to the disconnecting section, and is provided at one end of the movable rod 25 by the switching mechanism section 11-2.
connected to. This opening/closing mechanism section 11-2 is provided in a container 19 housed within one branch section 10-0 of the container 10a.

The opening/closing mechanism section 11-2 is connected to an external operating device 12-2 via a connecting shaft 27 and an external link 28.

Similarly to the disconnecting section, only one phase is driven for this grounding/closing, so that the other two phases connected thereto are also driven at the same time. That is, the drive rod 25 is connected to the main shaft 3 which is connected to the external link 28 via the link mechanism 29.
Connecting drive member 3 that connects three phases at once by rotating 0
1, the movable irons of each phase are simultaneously grounded and closed. Although the description of the movable rod 25 is omitted, when it is grounded, it is electrically connected to a ground terminal 35.

By configuring as described above, one branch part 10-1 is provided in the container 10a that houses the main bodies of the disconnector and the earthing switch.
is sufficient, the length S of the container 10a is reduced, and the GIS
Overall, the depth does not change, the height H also hardly changes, and the width L8
is reduced, so it is reduced. Furthermore, by forming the external link as described above, the operating devices for the disconnector and the earthing switch can be arranged side by side on the same side.

Next, another embodiment of the present invention will be described with reference to FIG.

The same parts and parts having the same functions as those in FIG. 1 are given the same reference numerals. That is, GIS1 is configured as follows. A current transformer 3 is provided in the upper sunrise part 2a of the circuit breaker 2,
A disconnector IO with an earthing switch is connected to the cable head 6. This cable head 6 is provided with a grounding bag [4a. Further, a current transformer 3 is provided at the sunrise section 2b on the lower side of the circuit breaker 2, and is connected to the main bus 8 via a disconnector 7 with an earthing switch. In this way, in addition to connecting the disconnector 10 with a grounding switch provided with one branch part 10-1 to the container 10a, the grounding device 4a is provided above the cable head 6, so that the G
Since I S 1 becomes the width L2, which is further reduced than the width L2 of the embodiment of the present invention, there is an advantage that the GISI as a whole can be further reduced.

〔Effect of the invention〕

As explained above, according to the present invention, by providing one branch part in the container and arranging the opening/closing mechanism parts of the disconnector and the earthing switch in this branch part, that is, by combining them, the axial length of the container can be increased. In other words, by shortening the width dimension, GIS
It is possible to provide a gas insulated switchgear that can be shortened in the width direction and downsized as a whole.

[Brief explanation of drawings]

Fig. 1 is a side view of the gas insulated switchgear of the present invention, Fig. 2 is a partially cutaway plan view of the disconnector with earthing switch of Fig. 1, and Fig.
The figures are a sectional view of FIG. 2, FIG. 4 is a side view of another embodiment of the present invention, and FIG. 5 is a side view of a conventional gas insulated switchgear. lO...Disconnector with earthing switch. 10a... Container, 10-1... Branch. ILo, IL, . . . opening/closing mechanism section, 11a . . . disconnection section. 12-8. IL, . . . operating device, 13 . . . insulating spacer. 14.15...Conductor, 16...Movable rod. 17... Binion rack mechanism. 18... Insulated operation rod, 20a, 20b...
bevel gear. 21...Main shaft, 2L0.2L2...
Spur gear. 23-, ,23-, ,2:L,... Spur gear. 25...Movable Rondo, 26...Earth opening/closing part. 27...Connection axis, 28...External link. 29...Link mechanism, 30...Main shaft. 35...Grounding terminal.

Claims (1)

[Claims] In a gas-insulated switchgear in which two or more disconnectors and grounding switches are arranged side by side in one container to create a composite gas-insulated switchgear, one branch is provided in the container, and each of the disconnectors and grounding switches is opened and closed within this branch. A gas insulated switchgear characterized by having two or more mechanical parts arranged side by side.