KR102506011B1 - Disconnecting switch and earthing switch for gas insulated switchgear - Google Patents

Abstract

Disclosed is an invention related to a disconnector for a gas insulated switchgear and a grounding switch. A disconnector and grounding switch for a gas insulated switchgear according to the present invention includes: a movable lever unit; a movable unit connected to the movable lever unit and rotated by operation of the movable lever unit; a hinge portion rotatably supporting the movable portion; and a fixing part into which the movable part to be rotated is inserted or opened, and the movable part is slidably mounted on the hinge part.

Description

Disconnector and ground switch for gas insulated switchgear {DISCONNECTING SWITCH AND EARTHING SWITCH FOR GAS INSULATED SWITCHGEAR}

The present invention relates to a disconnector for a gas insulated switchgear and an earthing switch, and more particularly, to a disconnector and an earthing switch for a gas insulated switchgear capable of reducing friction of a moving part in the course of operating the moving part.

In general, a gas insulated switchgear (GIS) is installed between the circuit between the power side and the load side of the electrical system when the circuit is artificially opened or closed in a normal current state or when an abnormal current such as a ground fault or short circuit occurs on the circuit. It is an electric device that protects the power system and load equipment by safely cutting off the current when

These gas insulated switchgears are generally composed of a bushing unit receiving power from a high-voltage power source, a circuit breaker, a disconnector switch, an earthing switch, a moving part, a control unit, and the like.

Here, the earthing switch (Earthing Switch) is installed on both ends of the circuit breaker and serves to manually ground the main circuit during maintenance and inspection, and is a device that removes the current remaining in the conductor during equipment maintenance or inspection.

In addition, the disconnector is a device for isolating a circuit or changing a connection after removing a load current when inspecting a device.

Although the disconnector and the grounding switch may be configured and driven separately, there are cases in which connection and disconnection are performed using a single driving lever. At this time, a method of driving the disconnector and the grounding switch by the same driving lever is called a 3-way method.

In the prior art, in the case of a structure in which the contact force between the movable blade and the fixed blade is maintained using a spring, when the movable blade is inserted or opened, the contact surface between the movable blade and the fixed blade slides, resulting in a large frictional force. Therefore, there is a problem in that high operating energy is required for the operation of the movable blade, and noise or foreign matter is generated due to contact. Therefore, there is a need to improve this.

The background art of the present invention is disclosed in Republic of Korea Patent Publication No. 10-2020-0125013 (published on November 4, 2020, title of the invention: 3-way switchgear for gas insulated switchgear).

The present invention has been created to improve the above problems, and an object of the present invention is to provide a disconnector for a gas insulated switchgear and a grounding switch capable of reducing friction of the movable part in the course of operating the movable part.

Disconnectors and earthing switches for gas insulated switchgear according to the present invention include: a movable lever unit; a movable part connected to the movable lever part and rotated by operation of the movable lever part; a hinge portion rotatably supporting the movable portion; and a fixing part into which the movable part is inserted or opened, and the movable part is slidably rotatably mounted on the hinge part.

In the present invention, the hinge portion, the hinge body portion; a hinge through-hole formed through the center of the hinge body and to which the movable part is rotatably mounted; and a guide rail portion formed as an annular groove in the hinge body portion and guiding a rotational path of the movable portion.

In the present invention, the movable part is provided in a pair, and the movable body part rotatably mounted to the hinge body part; a movable through hole formed through the movable body; a connecting shaft portion mounted to the hinge through-hole portion and the movable through-hole portion; and a movable sphere mounted on the movable body and sliding along the guide rail.

In the present invention, the movable spherical portion is formed to be exposed to the movable body in a hemispherical shape.

In the present invention, a plurality of hinge parts are spaced apart from each other at set intervals on the guide rail part and further include a guide receiving groove part for accommodating the movable spherical part.

In the present invention, the movable part further includes an elastic part disposed between the pair of movable body parts and providing elastic force to the movable body part.

In the present invention, the movable unit further includes a movable lever accommodating portion providing a space in which the movable lever unit is mounted on the movable body.

In the present invention, the movable lever unit, the movable lever body portion; and a movable lever link having one side rotatably connected to the movable lever body, the other side accommodated in the movable lever accommodating portion, and a plurality of links connected thereto.

According to the disconnector and earthing switch for gas insulated switchgear according to the present invention, the movable spherical part of the movable part moves along the guide rail part of the hinge part in the process of operating the movable part, so that the frictional force between the movable part and the hinge part can be reduced.

In addition, according to the present invention, the movable spherical part of the movable part is accommodated in the guide receiving groove of the hinge part, can maintain a stopped state, and can control the position of the movable part.

1 is a front view schematically showing a disconnector and a grounding switch for a gas insulated switchgear according to an embodiment of the present invention.
2 is a perspective view schematically showing a movable part and a hinge part in a disconnector for a gas insulated switchgear and an earthing switch according to an embodiment of the present invention.
3 is an assembled perspective view schematically showing a movable part and a hinge part in a disconnector for a gas insulated switchgear and an earthing switch according to an embodiment of the present invention.
4 is an assembled perspective view schematically showing a movable part and a hinge part in a disconnector for a gas insulated switchgear and an earthing switch according to an embodiment of the present invention.
5 is an operation diagram schematically showing a state in which a movable part is put into a fixed part in a disconnector for a gas insulated switchgear and an earthing switch according to an embodiment of the present invention.
6 is an operation view schematically showing that the movable spherical part of the movable part is separated from the guide receiving groove part of the fixed part and moves along the guide rail part in the disconnector for the gas insulated switchgear and the earthing switch according to an embodiment of the present invention.
7 is an operation diagram schematically showing a state in which the movable sphere part of the movable part is accommodated in the guide receiving groove of the fixing part and the operation of the movable part is completed in the disconnector for gas insulated switchgear and the earthing switch according to an embodiment of the present invention.

Hereinafter, an embodiment of a disconnector for a gas insulated switchgear and a grounding switch according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, definitions of these terms will have to be made based on the content throughout this specification.

1 is a front view schematically showing a disconnector for a gas insulated switchgear and an earthing switch according to an embodiment of the present invention, and FIG. 2 is a movable part and A perspective view schematically showing a hinge part, Figure 3 is an assembled perspective view schematically showing a movable part and a hinge part in a disconnector for a gas insulated switchgear and a grounding switch according to an embodiment of the present invention, Figure 4 is an assembled perspective view showing in one embodiment of the present invention It is an assembly perspective view schematically showing the movable part and the hinge part in the disconnector for the gas insulated switchgear and the grounding switch according to the present invention, Figure 5 is a state in which the movable part is put into the fixed part in the disconnector for the gas insulated switchgear and the grounding switch according to an embodiment of the present invention 6 is an operating diagram schematically showing, Figure 6 is a movable spherical part of the movable part in the disconnector for the gas insulated switchgear and the grounding switch according to an embodiment of the present invention is separated from the guide receiving groove of the fixed part and moved along the guide rail 7 is a state in which the movable spherical part of the movable part is accommodated in the guide receiving groove of the fixing part and the operation of the movable part is completed in the disconnector for the gas insulated switchgear and the earthing switch according to an embodiment of the present invention. It is a schematic diagram showing the operation.

Referring to FIGS. 1 to 7, the disconnector and grounding switch for a gas insulated switchgear according to an embodiment of the present invention include a movable lever part 100, a movable part 200, a hinge part 300, and a fixed part 400 include The movable lever unit 100 is connected to the movable unit 200 and rotates the movable unit 200 . The movable lever unit 100 is connected to a mechanical device (not shown) and rotates the movable unit 200 by the operation of the mechanical device.

The movable lever part 100 includes a movable lever body 110 and a movable lever link part 120 . The movable lever body 110 is connected to a mechanical device (not shown) and operates to operate the mechanical device.

In the movable lever link part 120, one side (upper side in FIG. 1) is rotatably connected to the movable lever body 110, and the other side (lower side in FIG. 1) is the movable lever accommodating portion 250 of the movable part 200. are accepted in The movable lever link unit 120 is linked in plurality. The movable lever link part 120 is rotated by the operation of the movable lever body 110 so that the movable body 210 of the movable part 200 is put into the fixing part 400 or opened.

The movable part 200 is connected to the movable lever part 100 and is rotated by the operation of the movable lever part 100 . The movable part 200 is mounted on the hinge part 300 to be slidably rotatable. The movable part 200 includes a movable body part 210, a movable through hole part 220, a connecting shaft part 230, and a movable sphere part 240.

The movable body 210 is provided as a pair and is rotatably mounted on the hinge body 310 of the hinge 300 . The movable body 210 is made of a frame formed long in the upper and lower portions (see FIGS. 2 and 3). A hinge body portion 310 is disposed between the pair of movable body portions 210 .

The movable through hole 220 is formed through one side of the movable body 210 (upper side in FIG. 3). The connecting shaft portion 230 is inserted into the movable through-hole portion 220 . The connecting shaft portion 230 is mounted on the hinge through-hole portion 320 and the movable through-hole portion 220 of the hinge portion 300 . The movable body 210 is rotatable around the connecting shaft 230 .

The movable spherical part 240 is mounted on the movable body 210 and slides along the guide rail part 330 . The movable spherical part 240 is formed to be exposed to the movable body 210 in a hemispherical shape. The movable spherical part 240 is exposed to the movable body part 210 in a hemispherical shape, and as it moves along the guide rail part 330 of the hinge part 300, the contact area is reduced and thus the frictional force can be reduced.

Alternatively, the movable spherical portion 240 is formed in a spherical shape, and the hemispherical shape is mounted to be exposed to the movable body portion 210. The movable spherical part 240 is rotated and moved along the guide rail part 330 so that frictional force can be reduced.

The movable part 200 further includes a movable lever accommodating part 250 . The movable lever accommodating part 250 provides a space in which a part of the movable lever link part 120 of the movable lever part 100 is inserted and mounted in the movable body part 210 . The movable lever accommodating part 250 is formed in a groove shape on the inner surface of the movable body 210 .

The movable part 200 further includes an elastic part 280 . The elastic part 280 is disposed between the pair of movable body parts 210 and provides elastic force to the movable body part 210 . The elastic part 280 includes a material that is elastically deformed, and receives or removes an impact transmitted to the movable body 210 while being elastically deformed. The elastic part 280 may be made of a spring, rubber, or the like that can be elastically deformed.

In the present invention, the movable part 200 further includes a first connection part 270 and a second connection part 260.

The first connection part 270 connects the pair of spaced apart movable lever body parts 110 . The first connection part 270 includes a first connection protrusion 271 and a first connection receiving part 273 . The first connection protrusion 271 protrudes from the inner surface of the movable lever body 110 on any one side (right side of FIG. 3 ) of the pair of movable lever body parts 110 . The first connection accommodating part 273 has a first connection protrusion 271 inserted into the inner surface of the movable lever body 110 on one of the pair of movable lever body parts 110 (left side in FIG. 3). It is formed in the shape of a groove or hole

The second connection part 260 connects the movable lever link part 120 of the movable lever part 100 mounted to the movable lever accommodating part 250 and the movable lever body 110 . The second connection part 260 includes a second one-side protrusion 261 and a second other-side protrusion 263 . Both the second one-side protrusion 261 and the second other-side protrusion 263 have threads formed on their outer surfaces, and either one side (right side in FIG. 3) and the other side (FIG. 3) of the pair of movable lever accommodating portions 250, respectively. standard left) is inserted and mounted. The second one side protrusion 261 and the second other side protrusion 263 are fastened with the movable lever link part 120 by screws.

The hinge part 300 supports the movable part 200 rotatably, and the movable part 200 is mounted on the hinge part 300 to be slidably rotatable. The hinge part 300 includes a hinge body part 310 , a hinge through-hole part 320 , and a guide rail part 330 .

One side (left side of FIG. 1 ) of the hinge body part 310 is fixed to the hinge fixing part 500 . The movable body 210 is rotatably mounted on both sides of the hinge body 310 (left and right sides in FIG. 3).

The hinge through-hole 320 is formed through the center of the hinge body 310, and the movable body 210 of the movable part 200 is rotatably mounted around the connecting shaft 230.

The guide rail part 330 is formed as an annular groove in the hinge body part 310 adjacent to the hinge through-hole part 320 and guides the rotational path of the movable part 200 . The guide rail part 330 allows the movable spherical part 240 of the movable part 200 to move and guides the rotational path of the movable spherical part 240 . The width of the guide rail portion 330 is greater than or equal to the outer diameter of the movable spherical portion 240 .

The hinge part 300 further includes a guide receiving groove part 340 . The guide receiving groove 340 is concavely formed in a plurality of spaced apart arrangements at set intervals in the guide rail part 330 . The inner diameter of the guide receiving groove 340 is greater than or equal to the outer diameter of the movable spherical part 240 .

The guide accommodating groove 340 is concave and accommodates the movable sphere 240 moving along the guide rail 330 . A plurality of movable spherical parts 240 are accommodated in the guide receiving grooves 340 spaced apart from each other, and can maintain a stationary state. In addition, the rotation angle and position of the movable part 200 can be controlled by adjusting the distance between the spaced guide receiving grooves 340 .

In the fixing part 400, the movable body 210 of the rotating movable part 200 is inserted or opened, and the energized state is determined according to the input or opening of the movable body 210 of the movable part 200.

The operation of the disconnector for the gas insulated switchgear and the grounding switch according to an embodiment of the present invention will be described with reference to FIGS. 5 to 7 .

Referring to FIG. 5 , before the operation of the movable lever unit 100 , the movable body 210 of the movable unit 200 is put into the fixing unit 400 and maintains contact with the fixing unit 400 . In addition, the movable spherical part 240 also maintains a state accommodated in the guide receiving groove 340 of the hinge part 300 .

Referring to FIG. 6 , the movable part 200 is rotated in one direction (counterclockwise direction based on FIG. 6 ) by the operation of the movable lever part 100 . At this time, the movable spherical part 240 of the movable part 200 is released from the state accommodated in the guide receiving groove 340 of the hinge part 300, and rotates along the guide rail part 330. As the hemispherical or spherical movable spherical part 240 moves along the guide rail part 330, frictional force is reduced.

Referring to FIG. 7 , the movable part 200 is rotated in one direction at a set angle, and the movable body 210 of the movable part 200 opens the fixing part 400 . The movable body portion 210 is rotated at a set angle, and the movable sphere portion 240 also maintains a state accommodated in the guide receiving groove portion 340 of the hinge portion 300 .

According to the disconnector for gas insulated switchgear and grounding switch according to the present invention, the movable sphere part 240 of the movable part 200 breaks the guide rail part 330 of the hinge part 300 in the process of operating the movable part 200. Accordingly, the frictional force between the movable part 200 and the hinge part 300 can be reduced by being moved.

In addition, according to the present invention, the movable spherical part 240 of the movable part 200 is accommodated in the guide receiving groove 340 of the hinge part 300, can maintain a stopped state, and can control the position of the movable part 200 there is.

Although the present invention has been described with reference to an embodiment shown in the drawings, this is merely exemplary, and those skilled in the art can make various modifications and equivalent other embodiments therefrom. will understand Therefore, the true technical protection scope of the present invention should be determined by the claims below.

100: movable lever part 110: movable lever body part
120: movable lever link part 200: movable part
210: movable body 220: movable through hole
230: connecting shaft part 240: movable spherical part
250: movable lever accommodating part 260: first connection part
261: first one side projection 263: first other side projection
270: second connection part 271: second connection protrusion
273: second connection receiving part 280: elastic part
300: hinge part 310: hinge body part
320: hinge through-hole portion 330: guide rail portion
340: guide receiving groove 400: fixing part
500: hinge fixing part

Claims (8)

movable lever unit;
a movable part connected to the movable lever part and rotated by operation of the movable lever part;
a hinge portion rotatably supporting the movable portion; and
The movable part that is rotated includes a fixing part that is inserted or opened,
The movable part is slidably and rotatably mounted on the hinge part,
The hinge part,
hinge body;
a hinge through-hole formed through the center of the hinge body and to which the movable part is rotatably mounted; and
A gas insulated switchgear disconnector and ground switch, characterized in that it comprises a guide rail portion formed as an annular groove in the hinge body portion and guiding a rotation path of the movable portion.
delete According to claim 1,
The movable part,
a movable body portion provided as a pair and rotatably mounted to the hinge body portion;
a movable through hole formed through the movable body;
a connecting shaft portion mounted to the hinge through-hole portion and the movable through-hole portion; and
Disconnector and ground switch for gas insulated switchgear, characterized in that it includes a movable sphere mounted on the movable body and sliding along the guide rail.
According to claim 3,
The gas insulated switchgear disconnector and grounding switchgear, characterized in that the movable spherical portion is formed to be exposed in a hemispherical shape on the movable body portion.
According to claim 4,
The hinge part,
The gas insulated switchgear disconnector and earthing switch, characterized in that a plurality of guide rails are spaced apart from each other at set intervals and further include a guide receiving groove for accommodating the movable spherical part.
According to claim 3,
The movable part,
Gas insulated switchgear disconnector and earthing switch, characterized in that it further comprises an elastic part disposed between the pair of movable body parts and providing an elastic force to the movable body part.
According to claim 3,
The movable part,
A gas insulated switchgear disconnector and grounding switch, characterized in that it further comprises a movable lever accommodating portion providing a space in which the movable lever unit is mounted on the movable body.
According to claim 7,
The movable lever part,
a movable lever body; and
One side is rotatably connected to the movable lever body portion, the other side is accommodated in the movable lever accommodating portion, and a movable lever link portion that is linked into a plurality of disconnectors and grounding switches for gas insulated switchgear.

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