JPH0479708A - Switchgear - Google Patents

Abstract

PURPOSE:To facilitate assembly or extension/reduction by a method wherein a plurality of units each accommodating a plurality of switches in a case body formed of a cylindrical body of which a part of the trunk part is cut and of a box body which has two flange surfaces, are stacked in stages by the flange surfaces. CONSTITUTION:A case body 5 is formed of a cylindrical body 7 having flanges 6 between openings in the opposite ends and of a square-shaped box body 8 which is inserted into and fitted to a cut part provided in the trunk part of the cylindrical body 7 and has flat fitting surfaces 8a on two sides. In the case body 5, a breaking mechanism comprising a plurality (three for one set of three phases in the figure) of vacuum breakers 11, fixed terminals 11a, movable terminals 11b and insulating rods 13 is incorporated. The fixed terminals 11a are led outside through bushings 10 provided on a fitting frame 9 of the square-shaped box body 8, and one breaking unit 20 is formed. The breakers are made and broken by moving the insulating rods 13 up and down by a rod 15 of an insulating mechanism 14. The unit 20 is stacked in necessary numbers in the reverse direction by the flanges and the movable terminals are connected by flexible conductors not shown in the figure. According to this constitution, an apparatus is made small in size and assembly or increase and decrease are made with ease.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a switching device in which a plurality of switches are housed in a housing.

[Conventional technology]

This type of conventional switchgear is known, for example, from Japanese Patent Application Laid-Open No. 60-2613
It is configured as shown in Japanese Patent No. 12. That is, FIG. 7 is a diagram showing a schematic configuration, FIGS. 8 and 9 are sectional views showing a front and side view of a specific configuration, respectively, and FIG. 10 is a perspective view showing a configuration of a housing of a switchgear. be.

In each figure, (1) is a vacuum type switch, and (2a) is a vacuum type switch.

(2b) and (2c) are switches equipped with rotating movable contacts, and G) are both switches (1], (2a), (2
A container for storing b) and (2c) in an insulating gas atmosphere, and as shown in FIG. 10, it is a T-shaped cylinder with openings in three directions. (4a), (4b), (4
c) is supported by the container (3) and the switch (2a), (2b
), (2c) is a bushing for electrically connecting one end side of the container G) with the outside of the container G).

In the switchgear configured as above, the switch (
When the switch 2a) and the switch (2c) are closed, the bushing (4a) and the bushing (4c) are brought into electrical continuity, and when the switch (1) and the switch (2b) are closed, the bushing (4a) and the bushing (4c) are electrically connected. A branch connection is made to the bushing (4h), and power is supplied to electrical equipment (not shown), such as a transformer, connected to the bushing (4b).

[Problem to be solved by the invention]

Since the conventional opening/closing device is constructed as described above, it is difficult to assemble the assembly inside the container, so the container must be larger to facilitate assembly. In addition, since each switch is configured in one container, it is not possible to add more switches, and the bushing can only be taken out in one direction. .

This invention was made in order to solve the above-mentioned problems, and its purpose is to provide a switching device that allows the container to be made smaller, the number of switches that can be installed to be added, and the bushing can be taken out in any direction. do.

[Means to solve the problem]

A switchgear according to the present invention includes a cylindrical casing having flanges at both end openings, and a terminal housed in the casing parallel to the surface of the flange, and one terminal led out of the casing via a bushing. A plurality of switch switches 1 to 1 consisting of a plurality of switches are stacked in multiple stages via the flange surface.

Further, the housing is constructed of a cylindrical body with a notched body and a square box that is inserted into the notched portion and has flat mounting surfaces on at least two sides.

Further, the other terminals of the plurality of switches are arranged approximately on the center line of the cylindrical body.

[Effect]

In the switchgear according to the present invention, the number of switches to be installed can be increased by stacking switch units in multiple stages, and the bushing can be taken out in any direction by changing the direction of installation.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A switching device according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the configuration of a switching device in an embodiment of the present invention, and FIGS. 2 and 3 are a front view and a side view respectively showing the configuration of a switch unit that constitutes the main part of the switching device in FIG. 1. Figure 4(a),
(b), (c), and (d) are a front view, a left side view, a right side view, and a bottom view showing the structure of the switch unit housing in FIGS. 2 and 3, respectively. In the figure, (
5) is a housing, which has a cylindrical opening with flanges (6) at both end openings, and a notch in the body of this cylinder (7), as shown in Fig. 4. It consists of a rectangular box body (8) having two flat mounting surfaces (8a), which is inserted into the housing. (9) is a mounting frame for mounting a bushing (10), which will be described later. (10) is a bushing that is attached to this mounting frame (9) and passes through the rectangular box body 8, and one end side is connected to the housing (on the outside of 9, a cable and a connector can be connected. (11) is a bushing (10) is connected to the other end side via the fixed terminal (lla) and is connected to the flange (6
) with three vacuum breakers placed almost parallel to the surface of
A pair of movable and fixed contacts are built in, respectively, and the movable contact side is connected via a movable terminal (Ilb) arranged approximately on the center line of the circle (indicated by the dotted chain line in Fig. 2) of the cylinder (7). It is connected to an insulating rod (13). Reference numeral (14) denotes an operating mechanism, which is connected to the insulating rod (13) via an operating shaft (15), a link (16), and a main shaft (17). and,
These casings (51 to main shafts (17) constitute a vacuum breaker unit (20), and this vacuum breaker unit (
20) are stacked in multiple stages as shown in FIG. 1 to construct the opening/closing device (30).

In addition, each movable terminal (Ila) is connected to a visible conductor (18).
When connected, the configuration will be as shown in the single line diagram in FIG.

This vacuum breaker unit (20) has a function as a three-phase vacuum breaker, and the operation shaft (15) rotates by the operation of the operation mechanism (14), and the operation shaft (15) rotates through the link (16). Opening and closing operations are performed by rotating the main shaft (17) and raising and lowering the insulating rod (13).

A switchgear (30) in which the vacuum breaker units (20) are combined as shown in FIG. 1 is constructed between the vacuum breaker units (20) at both ends as shown in FIG. 20) can be connected.

Furthermore, since the bushing (1O) is connected to the cable and connector, it also has the function of a disconnector.

In the switchgear according to one embodiment of the present invention configured as described above, the three vacuum breakers (11) are housed in separate casings [51] and are provided with flanges ( 6), the work space is secured and assembly work inside the casing (5) is facilitated, the vacuum breaker unit (20) is easily assembled, and the casing (51) is also large. It never takes shape.

Vacuum breaker unit (20) assembled in this way
Stack as many as you need as shown in Figure 1 to create a switchgear!
(30) makes it easy to add or reduce the number of units to be assembled, and the direction in which the bushing (6) is taken out can be freely selected during assembly.

In addition, the housing (51 is a cylindrical body with a notched body),
Since it is constructed by combining a rectangular box body (8) with a flat mounting surface (8a) on at least two sides at a notch, it is easy to manufacture individual housings, and an improvement in sealing reliability can be expected. .

In the above embodiment, the vacuum breaker (11) was used as an example of the switch, but for example, it can be used as a gas breaker, a load switch, a disconnector, or a vacuum breaker as shown in FIG. A similar effect can be achieved by a combination of these devices, such as the disconnector (11) and the disconnector (19).

In addition, although the vacuum breaker (11) is arranged in a straight line parallel to the surface of the flange (6), if the movable terminal (llb) does not overlap when viewed from the surface of the flange (6), the The same effect can be achieved even if the arrangement is shifted.

Furthermore, if the longitudinal dimension of the cylindrical opening constituting the housing (51) is suppressed to less than the diameter dimension, the flat part of the square box body (8) can be reinforced for pressure resistance. There is no need to apply the same, and weight reduction is achieved.

〔Effect of the invention〕

As described above, according to the invention in claim 1, there is provided a cylindrical housing having flanges at both end openings, and one terminal is housed in the housing parallel to the surface of the flange, and one terminal is connected to the housing through a bushing. Since the switch unit consisting of a plurality of switches led out of the casing is stacked in multiple stages via the flange surface, assembly work is facilitated and the casing can be made smaller. It becomes possible to add or reduce the number of machines included.

Further, according to the invention in claim 2, the casing is composed of a cylindrical body with a notched body, and a square box body that is inserted into the notch and has flat mounting surfaces on at least two sides. This makes it easier to manufacture individual casings and improves sealing reliability.

Furthermore, according to the invention set forth in claim 3, since the other terminals of the plurality of switches are arranged approximately on the center line of the cylindrical body, the direction in which the bushing is taken out can be freely selected during assembly, depending on the installation location. This has the effect of making the arrangement easier.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of a switchgear in one embodiment of the present invention, FIGS. 2 and 3 are front and side views of a switch unit constituting the main part of the switchgear in FIG. The figures show the structure of the housing of the switch unit; (a) is a front view, (b) is a left side view, (C) is a right side view, and (d) is a bottom view. Fig. 5 is a single line diagram electrically showing the switchgear in Fig. 1, Fig. 6 is a diagram showing a schematic configuration of a switchgear in another embodiment of the present invention, and Fig. 7 is a diagram of a conventional switchgear. 8 and 9 are front and side views showing the detailed structure of the opening/closing device in FIG. 7, and FIG. 10 is a perspective view showing the casing of the conventional opening/closing device. In the figure, [5] is the housing, (6) is the flange, ■ is the cylinder, (8) is the square box, (8a) is the flat mounting surface, (lO
) is a bushing, (I 1) is a vacuum breaker as a switch, (llb) is a movable terminal as the other terminal, (
20) is a vacuum breaker unit as a switch unit. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (3)

[Claims] (1) A cylindrical housing having flanges at both end openings, and a plurality of switches housed within the housing parallel to the surface of the flanges, one terminal of which is led out of the housing via a bushing. A switch unit comprising a plurality of switch units stacked one on top of the other in multiple stages via the flange surface. (2) A patent characterized in that the housing is composed of a cylindrical body with a notched body and a square box body that is inserted into the notch and has flat mounting surfaces on at least two sides. A switching device according to claim 1. (3) The opening/closing according to claim 1 or 2, wherein the other terminal of the plurality of switches is arranged approximately on the center line of the cylindrical body. Device.