JPS60261313A - Composite gas 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 composite gas switchgear, and more specifically, a composite gas switchgear in which a plurality of switches are housed in a container filled with an insulating gas. This is related to the gas switchgear.

[Conventional technology]

Conventionally, there has been a composite gas switchgear of this type as shown in FIG. In the figure, line-side switches Y and 3 and load-side switch 9 are housed in a container filled with insulating gas, and these switches λ.

3. Busoshin ys and A for the main circuit respectively.

7 is connected. g is an expansion bushing, which is connected to the bus UIO which branches further from the branch circuit to the load side switch of the common bus W connected to the switches - and 3;

However, in the conventional arrangement of one or more busbars, each busbar becomes long, and the screws and busbars intersect with each other, and the busbar and the detector intersect with each other at each busbar circuit.

Therefore, when multiple phases of the above-mentioned switches are installed in parallel, at the intersection point, for example, in the case of the switch bus 10, the bus / θ
must pass through the gap between the phases of the switch, and the dimension as a whole is equivalent to y, which is equivalent to the presence of double the number of phases in the front-rear direction. In particular, in the case of an intersection between a switch and a bus bar, etc., as in this case, the dimensions become even larger, considering that the switch operates and releases arced gas, at which time the insulation deteriorates significantly over time. There were drawbacks.

[Summary of the invention]

This invention was made in order to eliminate the drawbacks of the conventional device as described above.The switches of each circuit are arranged approximately in parallel, and the switch in the center is used for the load side circuit. An expansion bushing is placed on the side opposite to the branch from the common bus bar of the track side switch.

To provide a composite gas switchgear which is simplified, downsized, and has high insulation reliability, in which the busbar length is shortened and the busbar and the switch do not intersect.

[Embodiments of the invention]

Hereinafter, this invention will be explained with reference to examples. Figure 2 shows the first embodiment, in which the switch 3 is housed in the container, 3 is the track side switch, and the main circuit bushings S and 3 are located on the lower wall of the container L, respectively. It has a center of rotation and separates from the common generatrix 9 located at the center of each other. The expansion bushing ta is disposed at an intermediate position between the bushing 41 and the bushing 6 to support the common bus bar 9 approximately horizontally, and further supports and connects the load side controller 5 to the upper part of the common bus bar 9. The load-side bushing 7 is installed on the earthen wall of the container.

As described above, the bushings j, A, and 7, which mainly support and connect the switches ko, 3, and da, are arranged in parallel at the bottom of the container l.
The bushings J and 6 on both sides of the bushings are arranged in rows, and the bushings J and 6 on both sides are used for railway lines, and the switches J and 3 supported and connected to these bushings are of a rotating type, and a pivot point is provided on the bushing. The central pusher supports and connects the common bus bar 9, which is the opposite pole of the line breaker 2.3. Furthermore, a load-side switch DA is supported and connected to the common bus bar. That is, three rows of main circuit bushings arranged in parallel! , 3 switches 2 at 4.77
．． 3.41 are arranged in an inverted T-shape, and the two track switches - and 3 are arranged horizontally, and the load-side switch Hiroshi is arranged vertically.

With this configuration, the busbars of the main circuit are arranged through the shortest distance, and there is no intersection between the busbars and the equipment (1. A support member may also be used, and the same effect can be obtained. Fig. 3 shows a second embodiment, in which the switch ko, 3
Instead, linear drive type switch cores a and ja are arranged, and the bushing 7 and expansion bushing Sa of the switch V are replaced with each other, and the same effect can be obtained.

FIG. 7, shown as a third embodiment, shows the main circuit configuration of an expanded type, and an expansion switch/a is installed in a container /a separate from the container l.
It is made by storing / and has the same effect.

〔Effect of the invention〕

As described above, according to the present invention, the bus bar forming the main circuit is in a straight line connecting the shortest distance between devices.

In addition to minimizing the size of the device, the device is constructed so that the busbars of each device do not cross each other, so the device can be made smaller and lighter, and it can be highly reliable with good withstand voltage characteristics.

[Brief explanation of the drawing]

FIG. 7 is a partially cross-sectional schematic front view of a conventional composite gas switchgear, FIG. 2 is a partially cross-sectional schematic front view of the first embodiment of the present invention, and FIG. 3 is a part of the second embodiment. FIG. 3 is a partially sectional schematic front view of the third embodiment. /II・Container, λ, coel, 3. Ja and daφ switch,! , 6 and ri...bushing, la...bushing for expansion, ?・Fist common bus line. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] In a composite gas switchgear in which a container filled with an insulating gas and a plurality of switches are housed in the container, three switches for one phase are arranged in a single shape, and these three switches Left and right bushings connected to one side of the main circuits of the left and right pairs of switches arranged in parallel on the lower wall of the container at corresponding positions, and armatures of the left and right switches. A composite gas switchgear characterized by comprising a central bushing connected to a main circuit with a common side, and a bushing for three circuits, and a TC filter.