JP2007074792A - Gas insulated switchgear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the constitution of a contact for a switch in a gas insulated switchgear which can scale down the constitution of an apparatus and besides can improve the assemblability. <P>SOLUTION: This gas insulated switchgear is equipped with a movable contact 101 for a disconnector which extends in the direction of a first axis A1 and shifts in the axial direction, and a movable contact 102 for an earthing switch which extends in the direction of a second axis A2 orthogonal to the first axis A1 and shifts in the axial direction. A common drive shaft 13 is provided with an intermittent pinion 11 which drives the movable contact 101 for a disconnector via an intermittent rack 9, and an intermittent pinion 12 which drives the movable contact 102 for an earthing switch via an intermittent rack 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a gas insulated switchgear, and more particularly to a structure of a contact for a switch in a gas insulated switchgear.

Substations and switching stations installed around metropolitan areas or in coastal areas are filled and sealed with insulating media with excellent insulation and arc-extinguishing properties, such as SF ₆ gas, for reasons of difficulty in obtaining land and countermeasures against salt damage. A gas-insulated switchgear that houses an electric device that can be opened and closed in a container is used.
A gas insulated switchgear is a three-dimensional arrangement of circuit breakers, disconnectors, and other required equipment, which can reduce the space between each equipment and reduce the site area. The feature is that it can be remarkably reduced in size.
In addition, in consideration of environmental harmony with nature and residential areas, construction in buildings and underground rooms in large cities is increasing. Therefore, it is required to rationally arrange the components and further reduce the installation area and volume.

In a contact for a switch disposed in an insulating gas of a gas-insulated switchgear, as a conventional example in which a movable contact of a disconnect switch and a ground switch can be driven by one drive shaft, a movable side contact in parallel with a conductor Some have a child arranged and configured (see, for example, Patent Document 1).
In this case, the bus conductor shaft is provided at a position eccentric to the central axis of the gas container in the bus direction and the insulating spacer is attached. However, the outer diameter of the gas container is larger than the outer diameter of the insulating spacer.

As another conventional example, there is one in which the movable contact is arranged with an angle with respect to the direction of the bus conductor (see, for example, Patent Document 2).
In this case, the outer diameter of the main bus portion gas container is the same outer diameter as that of the insulating spacer, and there is an advantage that the gas container can be made small, but the movable side contactor and fixed side contactor of the disconnector or grounding switch are Since it is not perpendicular to the fixed conductor portion, the assembly centering adjustment work becomes difficult.

In addition, as a configuration example having the function of maintaining the position of the movable contact of the disconnector and the earthing switch, there is one that uses a Geneva mechanism and drives each movable contact by a separate Geneva mechanism (for example, Patent Documents). 3).
In this case, as compared with the configuration of Patent Document 1, the assembly is improved because the position holding function is provided so that the intermittent operation and the movable contact position can be held, but the outer diameter of the gas container becomes larger than the outer diameter of the insulating spacer. .

JP 2000-134733 A Japanese Patent Laid-Open No. 10-188746 JP-A-11-355926

  Thus, in the contactor structure for a switch according to the above-described conventional technology, it is difficult to reduce the size of the gas container due to the large gas container diameter, and even if the internal arrangement is reviewed to reduce the size of the device, the assemblability deteriorates. There was a problem.

  The present invention has been made in response to such a conventional situation, and an object of the present invention is to provide a contactor configuration for a switch in a gas-insulated switchgear that can reduce the device configuration and improve the assemblability. .

  In the gas insulated switchgear according to the present invention, the first movable contact extending in the first axial direction and moving in the axial direction, and extending in the second axial direction intersecting the first axis and extending in the axial direction And a second driving means comprising a pinion for driving the second movable contact, and a second driving means comprising a pinion for driving the second movable contact. Are provided on a common drive shaft.

  According to the present invention, it is possible to provide a contactor configuration for a switch in a gas insulated switchgear that can reduce the device configuration and improve the assemblability.

Embodiment 1 FIG.
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing the overall configuration of a gas insulated switchgear according to an embodiment of the present invention, showing a state where a disconnect switch is in an on position and a ground switch is in a cut position. FIG. 2 shows a detailed configuration of the contact for a switch according to the embodiment of the present invention. FIG. 2 (a) shows a side view of the disconnector, and FIG. 2 (b) shows a bottom surface of the disconnector. Fig. 2 (c) shows a side view of the ground switch. FIG. 3 is a cross-sectional view showing the entire configuration of the gas insulated switchgear according to the embodiment of the present invention, and shows a state where the disconnecting switch is in the cut position and the ground switch is in the cut position. FIG. 4 is a cross-sectional view showing the overall configuration of the gas-insulated switchgear according to the embodiment of the present invention, and shows a state in which the disconnect switch is in the cut position and the ground switch is in the on position.

1, 3, and 4 showing the overall configuration of the gas insulated switchgear according to the embodiment of the present invention, the cylindrical gas container body 1 includes a cylindrical gas container body 1 at the center of the gas container body 1. A bus bar conductor 2 arranged extending in the axial direction is accommodated, and the gas container body 1 is filled with an insulating gas such as SF ₆ . Insulating spacers 3 are disposed on both end faces of the cylindrical gas container main body 1 to close both end faces of the cylindrical gas container main body 1 and to insulate and support the bus bar conductor 2 at both ends thereof.

The gas container body 1 is provided with a cylindrical gas container branching portion 14 that protrudes in a direction perpendicular to the bus bar conductor 2 that extends in the axial direction of the cylindrical gas container body 1. An insulating spacer 3 is disposed on the end surface of the cylindrical gas container branching portion 14 opposite to the gas container body 1 and closes the end surface. The gas container main body space region 104 formed by the gas container main body 1 and the gas container branch space region 103 formed by the gas container branch 14 communicate with each other, and these regions include an insulating gas such as SF _6. Is filled.
A cylindrical gas container extending in a direction perpendicular to the bus bar conductor 2 from the gas container branch section space region 103 formed by the gas container branch section 14 to the gas container main body bus section space region 104 formed by the gas container main body 1. A rod-shaped disconnector movable contact 4 extending in the axial direction of the axis A1 coinciding with the central axis of the branching portion 14 is disposed so as to be movable in the axial direction.
The gas container branch part space region 103 formed by the gas container branch part 14 is orthogonal to the axis A1 that coincides with the central axis of the cylindrical gas container branch part 14 extending in the direction perpendicular to the bus bar conductor 2. A bar-shaped movable contact 5 for a grounding switch extending in the axial direction of the axis A2 extending in a direction perpendicular to the peripheral surface of the gas container branching portion 14 is disposed so as to be movable in the axial direction.

The disconnect switch movable contact 4 and the ground switch movable contact 5 are electrically connected to each other. The contact portion 4 a of the disconnector movable contact 4 is brought into contact with and separated from the disconnector fixed contact portion 6 provided on the busbar conductor 2 by the axial movement of the disconnector movable contact 4. The contact part 5 a of the movable contactor 5 for the earthing switch is brought into contact with and separated from the fixed contact part 7 for the earthing switch provided on the peripheral surface of the cylindrical gas container branching part 14 by the axial movement of the movable contactor 5 for the earthing switch. .
And the movable contact storing conductor 8 which stores the movable contact 4 for disconnectors, and the movable contact 5 for earthing switches in those open positions is provided.
Further, drive shafts 13 are provided for driving the disconnecting switch movable contact 4 and the grounding switch movable contact 5, respectively.

2 will be described with reference to FIG. 2. FIG.
In FIG. 2 which shows the detailed structure of the contact for a switch according to an embodiment of the present invention, an intermittent rack 9 is provided for the movable contact 4 for the disconnect switch, and an intermittent rack 10 is provided for the movable contact 5 for the ground switch. ing. An intermittent pinion 11 that meshes with the intermittent rack 9 and an intermittent pinion 12 that meshes with the intermittent rack 10 are provided. The intermittent pinion 11 and the intermittent pinion 12 are attached to a common drive shaft 13.

  FIG. 2 (a) shows a side view seen from the side where the disconnector movable contact 4 is arranged, and FIG. 2 (b) shows a bottom view seen from below the disconnector movable contact 4. FIG. FIG. 2 (c) shows a side view seen from the side where the movable contact 5 for grounding switch is arranged.

  The state shown in FIG. 2A shows the same state as in FIG. The contact part 4a of the disconnector movable contact 4 is joined to the disconnector contact part 6, the disconnector 101 is closed, and the branch circuit connected to the busbar conductor 2 via the disconnector 101 is the same as the busbar conductor 2. Held at potential. In this state, the contact portion 5a of the movable contact 5 for the ground switch is separated from the contact portion 7 for the ground switch, and the ground switch 102 is opened (see FIG. 1).

When the disconnector 101 is opened and the ground switch 102 is to be closed, the drive shaft 13 is rotationally driven. The intermittent pinion 11 provided on the drive shaft 13 by the rotational drive of the drive shaft 13 is connected to the disconnector movable contact 4 via the intermittent rack 9 engaged in this state in FIGS. 2 (a) and 2 (b). Drive to the right. By this drive, the disconnector movable contact 4 is shifted from the state shown in FIG. 1 to the state shown in FIG. 3. The disconnector movable contact 4 is stored inside the movable contact storage conductor 8, and the disconnector movable contact 4. The contact portion 4a is separated from the disconnector fixed contact portion 6 for disconnector. A branch circuit connected to the busbar conductor 2 via the disconnector 101 is disconnected from the busbar conductor 2.
In the operation process so far, the intermittent pinion 12 provided on the drive shaft 13 and the intermittent rack 10 provided on the movable contact 5 for the earthing switch are not meshed, and the movable contact 5 for the earthing switch is the movable contactor. It remains in the state stored in the storage conductor 8.

  From this state, the drive shaft 13 is further rotationally driven. When the disconnector movable contact 4 is stored inside the movable contact storage conductor 8, the intermittent rack 9 and the intermittent pinion 11 are disengaged and the intermittent pinion 12 provided on the drive shaft 13 is connected to the ground. 4 is engaged with the intermittent rack 10 provided on the movable contact 5 for the device, and the movable contact 5 for the ground switch is driven downward in FIG. 2 (a), and the state shown in FIG. As shown in FIG. 5, the contact part 5a of the movable contact 5 for the ground switch is joined to the fixed contact part 7 for the ground switch, and the ground switch 102 is closed. The branch circuit connected to the bus bar conductor 2 via the disconnector 101 is connected to the ground portion via the ground switch 102 while being disconnected from the bus bar conductor 2 and is held at the ground potential.

  Here, the disconnecting switch movable contact 4 constituting the disconnecting switch 101 is disposed substantially perpendicular to the insulating spacer 3 closing the end face of the cylindrical gas container branching portion 14, and is connected to the grounding switch 102. Since the switch movable contact 5 is disposed substantially perpendicular to the peripheral surface of the cylindrical gas container branching section 14, the assembly centering operation at the time of assembling the apparatus can be easily performed.

  And the intermittent rack 9 provided in the movable contactor 4 for the disconnector and the intermittent rack 10 provided in the movable contactor 5 for the ground switch are driven by the intermittent pinion 11 and the intermittent pinion 12 provided on the common drive shaft 13. Therefore, even when the driving operation device is not connected, the positions of the movable contacts 4 and 5 can be maintained, and the centering adjustment of the fixed contact portions 6 and 7 can be easily performed. .

In the embodiment according to the present invention shown in FIGS. 1 to 4, the axis of the disconnecting switch movable contact 4 and the axis of the grounding switch movable contact 5 are configured to intersect in an orthogonal state. By utilizing the advantage of the intermittent rack pinion configuration by the intermittent pinions 11 and 12 and the intermittent racks 9 and 10, the axis of the disconnecting contactor movable contact 4 and the axis of the grounding switch movable contactor 5 are at a predetermined angle other than the orthogonal state. It can also be made to cross in the state.
Also in this case, an intermittent rack 9 provided on the disconnecting switch movable contact 4 and an intermittent rack 10 provided on the grounding switch movable contact 5 are connected to an intermittent pinion 11 and an intermittent pinion 12 provided on a common drive shaft 13. By performing the driving operation, the positions of the movable contacts 4 and 5 can be maintained even when the driving operation device is not connected, and the centering adjustment of the fixed contact portions 6 and 7 can be easily performed.

  Further, in the embodiment according to the present invention shown in FIGS. 1 to 4, the disconnector movable contact 4 is arranged so as to extend substantially perpendicular to the bus conductor portion 2. However, utilizing the advantage of the intermittent rack pinion configuration by the intermittent pinions 11 and 12 and the intermittent racks 9 and 10, the movable contactor 4 for the disconnecting switch is extended with respect to the bus conductor portion 2 in a predetermined angle state other than a substantially vertical direction. In this configuration, the axis of the movable contactor 4 for the disconnector and the axis of the movable contactor 5 for the ground switch intersect at a predetermined angle state other than the orthogonal state. A device can also be configured in combination.

In the embodiment according to the present invention, in the insulating gas of the gas-insulated switchgear, the disconnecting switch movable contact 4 and the grounding switch movable contact 5 are crossed and arranged in the movable contact storing conductor 8, respectively. The intermittent racks 9 and 10 can be driven by intermittent pinions 11 and 12 provided on a common drive shaft 13.
In the embodiment according to the present invention configured as described above, the disconnect switch 101 and the ground switch 102 can be separately controlled in position holding and do not operate wastefully, so that the movable contact storage conductor 8 can be configured to be small. Furthermore, the entire apparatus configuration including the gas container body 1 can be reduced.

In the embodiment according to the present invention, the disconnector movable contact 4 is substantially perpendicular to the bus bar conductor 2, and the ground switch movable contact 5 is approximately to the gas container branch 14 from the bus bar conductor 2. It is configured vertically.
According to this embodiment, the movable contact 4 for the disconnecting switch is substantially perpendicular to the bus bar conductor 2 and the movable contact 5 for the ground switch is substantially perpendicular to the gas container branching portion 14 branched from the main bus. The assembly centering adjustment work performed from the openable part at the time of assembly can be easily performed.

And when comprised by the intermittent racks 9 and 10 and the intermittent pinions 11 and 12 like embodiment by this invention, the disconnecting switch 101 and the movable contact 4 for earthing switches of the earthing switch 102, and the movable contact 5 for earthing switches Can be easily changed so as to be in an angle state other than the vertical direction, and the same effect can be obtained in the reduction of the gas container body 1 and the assembly centering adjustment operation.
Furthermore, the structure of the bus bar conductor 2 can be changed, and the design can be easily changed so that the bus bar conductor 2 extends in the same direction as the disconnector movable contact 4, for example, and the same effect can be obtained in the assembly centering adjustment work. be able to.

  As described above, according to the contactor invention for a switch according to the embodiment of the present invention, the movable contact housing conductor 8 can be made small, so that the switchgear can be reduced, and this intermittent By using the rack and pinion mechanism, the position of the movable contact can be maintained by rotating the drive shaft to a predetermined position, and the adjustment hole portion of the movable contact storing conductor 8 fixed to the insulating spacer 3 is the movable contact. Therefore, the assembly centering adjustment work can be simplified.

  According to the embodiment of the present invention, the first movable contact comprising the disconnector movable contact 4 extending in the first axis A1 direction and moving in the axial direction is orthogonal to the first axis A1. A first movable contact comprising a second movable contact comprising an earthing switch movable contact, which extends in the direction of the intersecting second axis A2 and moves in the axial direction, comprising the disconnector movable contact 4 The first drive means comprising an intermittent pinion 11 that drives the first movable contact comprising the disconnector movable contact 4 through an intermittent rack 9 provided on the first movable contact and the first contact comprising the movable contactor 5 for the ground switch. And a second drive means comprising an intermittent pinion 12 for driving the two movable contacts via an intermittent rack 10 provided on the second movable contact 5 comprising the earthing switch movable contact 5. 13 so that the equipment configuration Can small reduction, moreover, it is possible to provide the opening and closing dexterity contacts configured in the gas insulated switchgear capable of improving assemblability.

In addition, according to the embodiment of the present invention, in the configuration of the preceding paragraph, the cylindrical gas container main body that accommodates the bus bar conductor 2 and forms the gas container main bus section space region 104 that is filled with an insulating gas such as SF _6. 1. A gas container branch portion provided in the cylindrical gas container main body 1 so as to project in a direction perpendicular to the bus bar conductor 2 and communicated with the gas container main bus space region 104 and filled with an insulating gas such as SF ₆ A cylindrical gas container branching portion 14 forming a space region 103 is provided, and the first movable contactor is configured as a disconnector movable side contactor 4 disposed substantially perpendicular to the busbar conductor 2. The second movable contact is configured as a movable contact 5 for the earthing switch disposed in the cylindrical gas container branching section 14, and the movable contact 5 for the grounding switch is configured as the cylindrical gas container branch. 14 is configured to be substantially perpendicular to the peripheral surface portion of the gas-insulating device, the device configuration can be reduced in the gas-insulated switchgear including the gas container main body 1 provided with the gas container branching portion 14 and the assembling property is improved. A contactor configuration for a switch in a gas-insulated switchgear that can be provided can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the whole structure of the gas insulated switchgear in embodiment by this invention, and has shown the state which has a disconnecting switch in an on position, and a ground switch. It is the side view and bottom view which show the detailed structure of the contactor for switches in embodiment by this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the whole structure of the gas insulated switchgear in embodiment by this invention, and has shown the state which has a disconnecting switch in a cutting position, and a ground switch. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the whole structure of the gas insulated switchgear in embodiment by this invention, and has shown the state which has a disconnecting switch in a cutting position, and a grounding switch is in an entrance position.

Explanation of symbols

1 Gas container body, 2 conductors, 3 insulating spacers, 4 movable contacts for disconnectors, 5 movable contacts for ground switches, 6 disconnect switch fixed contact portions, 7 ground switch fixed contact portions, 8 movable contact storage conductors, 9 , 10 Intermittent rack, 11, 12 Intermittent pinion, 13 Drive shaft, 14 Gas container branching part, 101 Disconnector, 102 Ground switch, 103 Gas container branching part space area, 104 Gas container body bus part space area.

Claims (2)

  A first movable contact that extends in the first axial direction and moves in the axial direction; a second movable contact that extends in the second axial direction intersecting the first axis and moves in the axial direction; A first drive means comprising a pinion for driving the first movable contact and a second drive means comprising a pinion for driving the second movable contact are provided on a common drive shaft. Characterized gas insulated switchgear. A gas container main body that accommodates a bus bar conductor, and a gas container branch portion provided in the gas container main body so as to protrude in a direction perpendicular to the bus bar conductor, wherein the first movable contact is connected to the bus bar conductor The second movable contact is configured as a movable contact for a grounding switch disposed in the gas container branch portion, and is configured as a movable contact for a disconnector disposed substantially vertically. 2. The gas insulated switchgear according to claim 1, wherein the movable contact for the switch is configured substantially perpendicular to the gas container branching portion.

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