KR200326645Y1 - switch mechanism for Gas lnsulated Switchgear - Google Patents

Abstract

The present invention relates to a switch driving device of a gas insulated switchgear, comprising: a gas insulated switchgear consisting of a ground switch and a disconnector; Electric motor for converting electric energy into mechanical energy, worm installed on the rotating shaft of the motor and the worm wheel engaged with it, Geneva gear is installed on the same axis as the worm wheel, Geneva wheel rotated by a certain angle by the Geneva gear, the Geneva wheel And a driven gear installed on the same axis as the driven gear, a driven gear meshed with the driven gear and rotated, a pinion gear installed and rotated on the same axis as the driven gear, and a ground position in an open position according to the forward / reverse rotation of the pinion gear. With the structure including movable contactor with rack gear to move to the closing position, it is possible to drive the grounding switch and disconnector with one manipulator, which enables cost reduction and miniaturization of appearance, and grounding by Geneva gear and Geneva wheel. The position contactor can be stopped precisely at the position, open position and closing position. There is an effect of preventing the breakdown phenomenon caused by the difference.

Description

Switch mechanism for gas insulated switchgear {switch mechanism for Gas lnsulated Switchgear}

The present invention relates to a switch driving device of a gas insulated switchgear, and more particularly, a ground switch and a disconnector provided in the gas insulated switchgear are integrated into one tank-type metal container and can be driven by a single manipulator. It relates to a switch driving device of the gas insulated switchgear.

In general, the gas insulated switchgear is composed of a ground switch and disconnector. In this case, the grounding switch is left in the switching device for maintenance inspection of the circuit breaker and the gas insulated switchgear which cut off the current in case of an accident such as opening / closing a load or grounding / shorting in the transmission / transmission system or electric circuit. It removes residual voltage and current. In addition, the disconnection unit completely separates the power outage part from the power supply during maintenance and repair, and aims to ensure safety, and has the performance of exciting current of a no-load transformer, charging current of a line or bus, or opening and closing of a loop current.

However, the conventional grounding switch and disconnector are separated into tank-type metal containers filled with sulfur hexafluoride (SF6) insulating gas, and each of the manipulators required for driving each device is separately provided. As the overall price is increased and the overall shape is complicated, there is a problem in that a large installation space is required because the external shape is large.

Accordingly, an object of the present invention is to provide a switch driving device of a gas insulated switchgear which can be driven to solve the problems as described above, so that the grounding switch and the disconnector can be driven by a single manipulator.

The switch drive device of the gas insulated switchgear of the present invention for achieving the above object,

In the gas insulated switchgear consisting of a ground switch and disconnector;

An electric motor that converts electrical energy into mechanical energy,

Worm installed on the rotating shaft of the motor and a worm wheel engaged with it,

Geneva gear is installed on the same axis as the worm wheel,

Geneva wheel rotated by a certain angle by the Geneva gear,

A prime mover installed on the same shaft as the Geneva wheel,

A driven gear meshed with the motive gear to rotate;

A pinion gear installed and rotated on the same axis as the driven gear,

And a movable contact having a rack gear to move from the open position to the ground position or the input position according to the forward / reverse rotation of the pinion gear.

1 is a perspective view showing a switch driving device of a gas insulated switchgear according to the present invention;

Figure 2 is an operating state showing the operating position of the movable contact according to the present invention.

*** Explanation of symbols for the main parts of the drawing ***

1: electric motor 2: worm

3: worm wheel 4: Geneva gear

5: Geneva wheel 6: prime move gear

7: Driven Gear 8: Spur Gear

9: movable contact 9 ': rack gear

S: limit switch

Hereinafter, with reference to the accompanying drawings of the present invention will be described in detail.

1 is a perspective view showing a switch driving device of the gas insulated switchgear according to the present invention, Figure 2 is an operating state diagram showing the operating position of the movable contact according to the present invention.

As shown in these drawings, the switch driving device of the gas insulated switchgear according to the present invention includes a worm 2 and a worm wheel 3 for transmitting the driving force of the electric motor 1 to the output shaft, and a movable contact for opening and closing the current. 9) Geneva gear (4) and Geneva wheel (5), which control to stop exactly at the ground position, open position, closing position and the driving force to increase the rotation angle of the output shaft even at a small rotation angle of the Geneva wheel (5) It consists of the gear 6 and the driven gear 7.

Here, the electric motor 1 is responsible for converting electrical energy into mechanical energy, the worm 2 is installed on the rotating shaft. The worm 2 is engaged with the worm wheel 3 and is decelerated, and the Geneva gear 4 is installed on one side of the worm wheel 3 on the same axis.

The center of the Geneva gear 4 is coupled to the shaft, and both ends of the Geneva gear 4 are protruded. In addition, the Geneva wheel 5, which is connected to the Geneva gear 4 and rotates, has an insertion hole 5 ′ into which the pin 4 ′ of the Geneva gear 4 is inserted. Two such insertion holes 5 'are formed on only one side of the central axis and are straight in the direction of the central axis. Therefore, the Geneva wheel 5 makes the intermittent rotation.

Meanwhile, the prime gear 6 is installed on the same axis of the Geneva wheel 5, and the driven gear 7 is installed on one side of the prime gear 6, and the number of teeth of the driven gear 7 is the prime gear 6. Less is formed. In addition, a pinion gear 8 is provided on the same axis of the driven gear 7.

In addition, the movable contact 9 is formed with a rack gear 9 'on one side, and the rack gear 9' is engaged with the pinion gear 8, so that the pinion gear 8 is subjected to forward / reverse rotation. Therefore, it is moved from the open position to the ground position (ground switch) or closing position (disconnector).

In the drawings, reference numeral S denotes a limit switch.

It describes the operating state of the switch drive device according to the present invention made of a structure as described above.

First, when the input instruction is given, the fan 2 is rotated by the electric motor 1 which converts electrical energy into mechanical energy, and the worm wheel 3 engaged with the worm 2 is decelerated and rotated and installed on the same axis. Geneva gear 4 is rotated. At this time, the Geneva gear 4 rotates the Geneva wheel 5 from the moment when the pin 4 'of one side is inserted into the insertion hole 5' of the Geneva wheel 5 after idling for a predetermined time. When the pin 4 'of the) is spaced apart from the insertion hole 5' of the Geneva wheel 5, the rotation of the Geneva wheel 5 is stopped and only the Geneva gear 4 idles, and then the limit switch S The power of 1) is cut off and the rotation stops.

Here, as the Geneva wheel 5 is rotated, the motive gear 6 installed on the same axis as the Geneva wheel 5 is rotated, and the driven gear 7 engaged therewith is accelerated. Then, the pinion gear 8 installed on the same axis as the driven gear 7 is also rotated so that the movable contactor 9 having the rack gear 9 'is moved from the open position to the closing position by the limit switch S. When the motor 1 stops, the movable contactor 9 stops exactly at the closing position. When the motor 1 changes the rotational direction by the structure as described above, the motor 1 is moved from the input position to the open position and the ground position by the above process. That is, one manipulator accurately controls the three-way position.

The switch driving device of the gas insulated switchgear of the present invention by the above structure can drive the grounding switch and the disconnector with one manipulator, so that the cost can be reduced and the size can be reduced. This makes it possible to stop the movable contactor accurately at the ground position, the open position, and the closing position, thereby preventing the breakdown phenomenon caused by the position error.

Claims (1)

In the gas insulated switchgear consisting of a ground switch and disconnector; An electric motor that converts electrical energy into mechanical energy, Worm installed on the rotating shaft of the motor and a worm wheel engaged with it, Geneva gear is installed on the same axis as the worm wheel, Geneva wheel to be intermittent rotation by the Geneva gear, A prime mover installed on the same shaft as the Geneva wheel, A driven gear meshed with the motive gear to rotate; A pinion gear installed and rotated on the same axis as the driven gear, And a movable contactor having a rack gear formed to move from an open position to a ground position or an input position according to the forward / reverse rotation of the pinion gear.