JP2002150899A - Complex type gas-insulating switch-gear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a complex type gas-insulating switchgear that is small, lightweight, and low price. SOLUTION: Operation equipment 23a and 24a are connected to an end of an insulating support structure 23, and a metal container 24 containing drive connection parts 27 and 28 driven with the operation equipment is connected to the other end. The insulating structures 25a and 26a, which contains an interception part 29 or a shutter part 30, by which a point of contact of an electricity conducting part is opened/closed by interlocking with at least two or more drive connection parts 27 and 28 in the end of metal container 24. Two or more insulated sticks 25 and 26, which drive the interception part 29 or the shutter part 30 in the insulating support structure 23 are arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas insulated switchgear for electric power in which a number of switches are disposed in a container filled with an insulating gas, and more particularly to a power insulated switchgear between a circuit breaker and a main bus. The present invention relates to a combined gas insulated switchgear including a disconnector, a grounding device, and the like, which is suitable for installation between a transmission line and the like.

[0002]

2. Description of the Related Art In an air substation, the life of a bus or a tower is generally long, and the bus or the tower is rarely replaced when a switchgear is replaced. Therefore, in many cases, the switchgear is replaced with one having high performance and high reliability while effectively using the air-insulated bus.

[0003] A compound switchgear is a device that meets such needs. And, as this type of device, an operating device is connected to one end of the insulating support structure, and a metal container housing a drive connection unit driven by the operating device is connected to the other end,
In addition, a composite gas insulated switchgear in which at least two or more of one end of a metal container is connected to an insulating structure containing a disconnecting unit or a disconnecting unit that opens and closes a contact of an energizing unit in conjunction with a driving connection unit. It is considered.

FIG. 3 exemplifies a composite gas insulated switchgear of this type. The device shown in FIG.
A metal grounding container 2 having a branching structure (for example, a Y-shape) is erected, and a bushing / cumulative insulator 4 containing a blocking part 3 is connected to one end of the grounding container 2 via an insulating spacer 5. It is. The breaking part 3 is connected to a breaking part operating device 9 provided on the gantry 1 via a breaking part driving insulating rod 8 in a breaking part connection conductor 7 housed in the metal grounding container 2. On the other hand, the disconnecting portion 10 is
Is connected via an insulating spacer 12, and a disconnection section operating device 13 is provided on the surface side of the tubular grounding container 11. Further, a porcelain tube 15 containing a bushing conductor 14 is connected to the distal end of the tubular grounding container 11.

[0005] In the composite gas insulated switchgear having such a configuration, operating devices 9 and 13 are disposed on the side of the shut-off section 3 and on the side of the disconnecting section 10, respectively.
In order to make the connection with the grounding container 2, the grounding container 2 needs to be branched. Furthermore, in order to secure the insulation distance of the insulating rod 8 for driving the interrupting section, the grounded container 2 having the branch must be enlarged. Further, since the metal grounding containers 2 and 11 are provided, it is necessary to dispose the insulating spacers 5 and 12, so that the total weight increases and the cost increases.

[0006]

In the above-mentioned combined gas insulated switchgear, the driving device is disposed in each of the shut-off portion and the disconnection portion, and the total weight of the metal grounding container having the branch is large, so that the total weight is reduced. There was a problem that it became impossible to provide cheap ones.

The present invention has been made in order to cope with such a conventional situation, and an object of the present invention is to provide an inexpensive composite gas insulated switchgear which can be reduced in size and weight and which is inexpensive.

[0008]

In order to achieve the above-mentioned object, according to the present invention, there is provided a metal support having an operation device connected to one end of an insulating support structure and a drive connection portion driven by the operation device at the other end. A composite in which containers are connected, and at least two or more insulating structures are connected to one end of the metal container and house an interrupting portion or a disconnecting portion that opens and closes a contact of an energizing portion in conjunction with the drive connection portion. A composite gas insulated switchgear, wherein a plurality of insulating rods for driving the cut-off portion or the disconnecting portion are arranged in the insulating support structure.

According to the composite gas insulated switchgear having the above-described structure, the insulating rod for driving the interrupting portion or the disconnecting portion is housed in the single insulating support structure. It is possible to reduce the size of the metal container that can be housed in the common container and that changes the operation direction for driving the breaking unit or the disconnecting unit. Therefore, the total weight can be reduced and the cost can be reduced.

[0010] In the composite gas insulated switchgear of the present invention, it is desirable to dispose the guide support for the insulating rod in the insulating support structure.

With this arrangement, when the insulating rods are driven, the interference between the insulating rods for driving the cut-off section or the insulating rods for driving the disconnecting section can be avoided by the guide support, and the direction of movement of each of the insulating rods is different. It is possible to prevent the displacement and to disperse the force acting on the insulating rod during the operation of the cut-off portion or the disconnection portion.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a composite gas insulated switchgear according to the present invention will be described below with reference to FIGS.

FIG. 1 is a cross-sectional view of a substantially combined gas-insulated switchgear according to an embodiment of the present invention.

As shown in FIG. 1, in the composite gas insulated switchgear of this embodiment, a mechanism storage box 22 is installed on a frame 21 having an appropriate height. The operating device 23a and the shut-off unit operating device 24a are housed.

A single insulating support structure 23 made of, for example, a porcelain tube is provided on the mechanism housing box 22 in an upright state, and a metal container 24 having, for example, a hexagonal cross section is connected to the upper end thereof. Inside the insulating support structure 23, a disconnecting portion driving insulating bar 25 and a breaking portion driving insulating bar 26 are accommodated in parallel at predetermined intervals.

A metal container 24 is attached to the upper ends of the disconnecting portion driving insulating bar 25 and the breaking portion driving insulating bar 26.
The breaking part driving direction converter 27 and the disconnecting part driving direction converter 28 disposed inside are connected to each other. The blocking portion driving direction converter 27 has a cam structure, for example, and can rotate around a shaft 27a. Further, the disconnecting portion driving direction converter 2
Reference numeral 8 denotes a V-shaped lever, for example, which can rotate around a shaft 28a.

In the metal container 24, a cut-off portion storage insulating structure 25a and a disconnection portion insulating support structure 26a, each of which is composed of a porcelain tube, are inclined, and are arranged, for example, in a V-shape when viewed from the lateral direction. The cut-off portion 29 is stored in the cut-off portion storage insulating structure 25a, and the disconnection portion 30 is stored in the disconnection portion insulating support structure 26a.

The shut-off unit 29 is connected to the shut-off unit 29.
4a is transmitted through the insulating rod 26 for driving the interrupting section and the driving direction converter 28 for the interrupting section. In the interrupting section driving direction converter 28, the action of changing the direction of the force in the direction in which the interrupting section 29 operates is performed. Done. Similarly, the operating force of the disconnection section operating device 23a is transmitted to the disconnection section 30 via the disconnection section drive insulating rod 25 and the disconnection section drive direction converter 27. The action of changing the direction of the force in the direction in which is operated is performed.

According to the composite type gas insulated switchgear having such a configuration, the disconnection section operating device 23a and the cutoff section operating device 24a are housed in the same mechanism housing box 22, and the same insulating support structure 23 is provided. The insulating rod 25 for driving the disconnecting portion and the insulating rod 26 for driving the interrupting portion are housed in the housing, and further, each drive direction conversion for electrically connecting the interrupting portion 29 and the disconnecting portion 30 in the same metal container 24 is performed. . Therefore, there is no need to provide a branch for disconnection connection from a long grounded container in order to secure a sufficient insulation distance between the insulating rods 25 and 26, and the configuration can be reduced in size and weight, and the cost of the composite gas can be reduced. An insulated switchgear can be provided.

FIG. 2 is a configuration diagram showing a cross section of substantially the entirety of a combined gas insulated switchgear according to another embodiment of the present invention.

The overall structure of the composite gas insulated switchgear shown in FIG. 2 is substantially the same as that of the embodiment shown in FIG. At the lower part, an insulating rod guide 31 for driving the cut-off section
Further, a disconnecting portion driving insulating rod guide 32 is provided to individually guide the upper ends of the breaking portion driving insulating rod 26 and the disconnecting portion driving insulating rod 25. That is, each of the insulating rod guides 31 and 32 is formed, for example, in the shape of a ring bracket, and each of the ring portions has an insulating rod 26 for driving the breaking unit.
The disconnecting portion driving insulating rod 25 is inserted. Other configurations are the same as those shown in FIG. 1, and therefore, the corresponding portions in FIG. 2 are assigned the same reference numerals as in FIG.

According to the composite gas insulated switchgear shown in FIG. 2 having such a configuration, the upper end position of the insulating support structure 8
Insulating rod 26 for driving the interrupting part and insulating rod 25 for driving the disconnecting part
Are guided individually to avoid interference with each other,
A deviation from the driving direction during the operation of the insulating rod can be prevented, and each insulating rod 2
The forces acting on 5, 26 can be dispersed. Therefore, in addition to the effects of the first embodiment, effects such as further assurance of operation can be achieved.

In this embodiment, both the insulating rod guide 31 for driving the cut-off portion and the insulating rod guide 32 for driving the disconnection portion are provided, but only one of the guides may be provided. Although the guides 31 and 32 are provided on the upper end side of the insulating support structure 23, they may be provided on the lower end side or on both ends.

Further, in each of the above embodiments, the configuration having the cutoff portion and the disconnection portion has been described, but the present invention is not limited to such a configuration. That is, the operating device is connected to one end of the insulating support structure, and the other end is connected to the metal container housing the driving connection unit driven by the operating device, and one end of the metal container is interlocked with at least two or more driving connection units. A combined gas insulated switchgear connected to an insulating structure containing a breaking part or disconnecting part that opens and closes a contact of a current-carrying part, wherein the insulating rod drives the breaking part or disconnecting part in the insulating support structure. Can be implemented in various modes as long as a plurality of are arranged.

[0025]

As described above, according to the composite gas insulated switchgear of the present invention, the operating device for the shut-off unit and the disconnecting unit is housed in a common box, so that it is small and lightweight. An inexpensive combined gas insulated switchgear can be provided.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of a combined gas insulated switchgear according to the present invention.

FIG. 2 is a configuration diagram showing another embodiment of the combined gas-insulated switchgear according to the present invention.

FIG. 3 is a configuration diagram showing a conventional combined gas insulated switchgear.

[Explanation of symbols]

 Reference Signs List 22 mechanism storage box 23 insulating support structure 23a disconnection operation device 24 metal container 24a cutoff operation device 25 disconnection drive insulating rod 25a cutoff storage insulation structure 26 disconnection drive insulation rod 26a disconnection storage insulation structure Object 27 Disconnecting portion driving direction converter 28 Disconnecting portion driving direction converter 29 Disconnecting portion 30 Disconnecting portion 31 Disconnecting portion driving insulating rod guide 32 Disconnecting portion driving insulating rod guide

Claims (2)

[Claims] An operating device is connected to one end of an insulating support structure, a metal container housing a drive connection unit driven by the operating device is connected to the other end, and at least two metal containers are connected to one end of the metal container. As described above, in a composite gas insulated switchgear in which an insulating structure containing a disconnecting portion or a disconnecting portion is opened or closed in accordance with the drive connecting portion to open and close a contact of an energizing portion, the insulating supporting structure includes A composite gas insulated switchgear, wherein a plurality of insulating rods for driving a breaking part or a disconnecting part are arranged. 2. The composite gas insulated switchgear according to claim 1, wherein a guide support for the insulating rod is disposed in the insulating support structure.