KR101247538B1 - Solid insulated switchgear - Google Patents

Abstract

PURPOSE: A solid insulation switch is provided to doubly open a circuit when the circuit is opened, thereby preventing a safety accident. CONSTITUTION: A solid insulation switch has a main body(110). The main body has a case shape. A door(120) is installed in a side of the main body. Components which are installed in the main body are repaired by opening the door.

Description

Solid Insulated Switchgear {SOLID INSULATED SWITCHGEAR}

The present invention relates to a solid insulated switchgear.

The power generated in the power plant is boosted or stepped down in a boost or step down transformer and supplied to the customer.

In order to cut off the electric power supplied to the underground, the branch of the line or the electric power supplied to the line, the switchgear including the breaker and the switchgear is used in the power substation and the electric room. .

Conventional switchgear uses a method of insulating the electrical conductive parts at regular intervals and insulated by air insulation, and the method of insulating parts by encapsulating SOHO gas such as SF6 (sulfur hexafluoride). However, since the air insulation method is exposed to the atmosphere of the electrically conductive part, secondary accidents such as aging, corrosion or electric shock may occur, and SF6 may pollute the environment.

In order to solve the above problems, Korean Patent Publication No. 10-2010-0007231 discloses an opening and closing mechanism of a solid insulated switchgear.

The opening / closing mechanism 160 of the switch is provided with a main circuit opening and closing vacuum interrupt 162 for connecting or opening the power source side and the use side. However, even when the fixed contact point 114 and the movable contact point 112 are open, when an abnormal voltage is generated, there is a possibility that the fixed contact point 114 side and the movable contact point 112 side may be connected. There is concern.

In addition, since the opening / closing mechanism 160 and the opening / closing mechanism 160 cannot be interconnected and connected, they cannot be expanded.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide a solid insulated switchgear that can completely prevent the safety accident by opening the circuit double when the circuit is opened. Is in.

Another object of the present invention is to provide a solid insulated switchgear which can extend a circuit.

Still another object of the present invention is to provide a solid insulated switchgear which is easy to maintain.

Solid insulation switchgear according to the present invention for achieving the above object, the enclosure; A first extension part formed in a tubular shape protruding downward and having a vacuum interrupter formed therein, a second extension part protruding upward and communicating with the first extension part, and the first extension part And an insulating housing formed of a solid insulator comprising a tubular third extension portion and a fourth extension portion formed to protrude to one side and the other side, respectively, at a location where the second extension portion meets the first extension portion below the vacuum interrupter. External connection conductor inserted into and fixed to the power supply side or the load side, interconnected and installed in the second extension part so as to be linearly movable, and a circuit breaker insulated rod and a circuit breaker connected to or disconnected from the external connection conductor. Rod, internally connected conductor inserted and fixed from the third extension to the fourth extension and in which the breaker movable conductor is always connected A main circuit breaker including an extension connecting conductor inserted into and fixed to an end of the third extension portion and the fourth extension portion; A first extension part formed in a tubular shape protruding downward and having a vacuum interrupter formed therein, a second extension part protruding upward and communicating with the first extension part, and the first extension part And an insulating housing formed of a solid insulator comprising a tubular third extension portion and a fourth extension portion formed to protrude to one side and the other side, respectively, at a location where the second extension portion meets the first extension portion below the vacuum interrupter. External connection conductor inserted into and fixed to the power supply side or the load side, interconnected and installed in the second extension part so as to be linearly movable, and a circuit breaker insulated rod and a circuit breaker connected to or disconnected from the external connection conductor. Rod, internally connected conductor inserted and fixed from the third extension to the fourth extension and in which the breaker movable conductor is always connected A first expansion circuit breaker including a first expansion circuit breaker connected to any one of the expansion connection conductors of the main circuit breaker; A tubular first extension portion protruding downward, protruding upward and protruding outwardly from one side of the tubular second extension portion communicating with the first extension portion, the first extension portion and the second extension portion, respectively An insulating housing, which is a solid insulator having a tubular third extension portion and a fourth extension portion, a first external connection conductor inserted into and fixed to the third extension portion, and connected to the destination of use, and inserted into and fixed to the fourth extension portion. A second external connection conductor connected to the first expansion circuit breaker, a first internal connection conductor inserted into and fixed inside the first extension part, and connected to the first external connection conductor, and inserted into and fixed inside the second extension part of the second extension part; A second internal connection conductor connected to an external connection conductor, a disconnector insulating rod installed in a linear motion on the second extension portion, and positioned in the first and second extension portions in a straight line with the disconnector insulating rod And a first disconnector comprising a disconnector movable conductor connected to and disconnected from the first internally connected conductor and always connected to the second internally connected conductor.

When the solid-state insulation switch device according to the present invention is disconnected between the power supply side and the use side, the main breaker connected to the power supply side is cut off, and the breaker connected to the main breaker side and connected to the use side is cut off. Therefore, even if an abnormal voltage or the like occurs, there is no fear that the power supply side and the destination side will be connected, and safety accidents are completely prevented.

In addition, since the expansion circuit breaker can be used in combination with the main circuit breaker as necessary, expansion is easy.

When the solid insulated switchgear is continuously installed, the sides of the enclosures of the solid insulated switchgear which are in contact with each other are opened, and an empty hollow enclosure is interposed between the enclosure in which the parts are embedded, and the maintenance is convenient. Do.

1 is a perspective view of a solid insulated switchgear according to an embodiment of the present invention.
2 and 3 are perspective views showing that the solid insulated switchgear according to an embodiment of the present invention is installed continuously.
Figure 4 is a perspective view of the inside of the solid insulation switchgear according to an embodiment of the present invention.
5 is a longitudinal sectional view of FIG. 4;
6 and 7 are enlarged views of part “A” and part “B” of FIG. 5.

Hereinafter, a solid insulated switchgear according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a solid insulated switchgear according to an embodiment of the present invention, Figures 2 and 3 are perspective views showing that the solid insulated switchgear according to an embodiment of the present invention is installed continuously.

As shown, the solid insulated switchgear according to an embodiment of the present invention has a case-shaped housing 110 forming an external shape. The door 120 is installed at the side of the enclosure 110. If you want to repair the parts installed inside the enclosure 110, the door 120 is opened to repair.

As shown in FIG. 2, a plurality of solid insulation switchgears according to the present embodiment may be installed and used in series. At this time, the housing (110a, 110b, 110c, 110d) of the adjacent solid insulation switchgear contact each other. However, when the door 120 is installed on the side surfaces of the enclosures 110a and 110b (110b and 110c) and 110c and 110d in contact with each other, the parts inside the enclosure 110 cannot be repaired due to the door 120. . Thus, when a plurality of solid insulated switchgear is continuously installed, the door 120 is opened on the side surface of the housing 110 which is in contact with each other and is not installed. That is, the door 120 is installed only on the side exposed to the outside among the sides of the enclosure (110a, 110d) located in the outermost.

As shown in FIG. 3, the solid insulated switchgear according to the present embodiment may be used by being installed in plurality. At this time, the housing (110e, 110f, 110g, 110h, 110i) of the adjacent solid insulated switchgear contact each other. By the way, when the door 120 is installed on the sides of the housing (110e, 110f) (110f, 110g) (110g, 110h) (110h, 110i) in contact with each other, the parts inside the enclosure 110 due to the door 120 Can't repair them. Thus, when a plurality of solid insulated switchgear is continuously installed, the door 120 is opened on the side surface of the housing 110 which is in contact with each other and is not installed. That is, the door 120 is installed only on the side exposed to the outside among the sides of the enclosure (110e, 110i) located in the outermost.

In addition, two enclosures 110e, 110f, 110h, and 110i containing components therein are in contact with each other, and a hollow enclosure 110g is provided between the enclosure 110f and the enclosure 110h having components therein. ) Is interposed.

In addition, the housings 110e, 110f, 110h, and 110i containing the components therein and the enclosure 110g may be arranged in an alternating manner. The main circuit breaker 210 may be disposed inside the enclosure 110. The first expansion circuit breaker 250, the second expansion circuit breaker 260, the first circuit breaker 310, and the second circuit breaker 350 are installed.

The main circuit breaker 210 and the first and second expansion circuit breakers 250 and 260 will be described with reference to FIGS. 4 to 6. 4 is a perspective view illustrating an inside of a solid insulation switchgear according to an exemplary embodiment of the present invention, FIG. 5 is a longitudinal cross-sectional view of FIG. 4, and FIG. 6 is an enlarged view of part “A” of FIG. 5.

As shown, the support plate 113 is installed on the inner substantially upper side of the housing 110, the main circuit breaker 210, the first expansion circuit breaker 250 and the second expansion circuit breaker 260 are installed on the support plate 113. Combined and fixed.

The main circuit breaker 210 opens and closes the power supply side and the user side, and insulates the housing 220, the external connection conductor 231, the circuit breaker insulating rod 233a, the circuit breaker movable conductor 233b, and the internal connection conductor 235. ).

The insulating housing 220 is formed of a solid insulator such as an epoxy resin, and the upper surface is coupled to the lower surface of the support plate 113. The insulating housing 220 has a tubular first extension portion 221 protruding downward, a tubular second extension portion 223 protruding upward and communicating with the first extension portion 221, and a first extension. A tubular third extension part 225 and a fourth extension part 227 are formed to protrude to the left and right sides at the portions where the part 221 and the second extension part 223 meet, and communicate with each other. A vacuum interrupter 221a is formed inside the first extension part 221.

An external connection conductor 231 is inserted into and fixed to a lower end of the first extension part 221 below the vacuum interrupter 221a. The lower side of the external connection conductor 231 is connected to the power supply side or the load side, and the upper side is located in the vacuum interrupter 221a. The lower side of the external connection conductor 231 may be connected to the power source side or the load side via the connection bus 290.

The breaker insulated rod 233a and the breaker movable conductor 233b coupled to the lower end side of the breaker insulated rod 233a are positioned in the second extension part 223 to linearly reciprocate. The breaker insulating rod 233a and the breaker movable conductor 233b are linearly reciprocated, and the breaker movable conductor 233b is connected or disconnected to the external connection conductor 231 through the vacuum interrupter 221a. In addition, the breaker movable conductor 233b is always connected to the internal connection conductor 235.

The internal connecting conductor 235 is inserted and fixed from the third extension portion 225 to the fourth extension portion 227 and is always connected to the breaker movable conductor 233b. In addition, expansion connection conductors 237 are inserted and fixed to ends of the third extension part 225 and the fourth extension part 227, respectively. One side of the expansion connection conductor 237 is connected to the end side of the internal connection conductor 235, respectively, and the other side is exposed to the outside of the third extension portion 225 and the fourth extension portion 227.

The first extension breaker 250 and the second extension breaker 260 are coupled to and connected to the third extension part 225 and the fourth extension part 227 of the main circuit breaker 210, respectively. That is, the third extension part 225 of the main circuit breaker 210 and the fourth extension part 251 of the first expansion circuit breaker 250 are coupled to each other, and the fourth extension part 227 of the main circuit breaker 210 is coupled with each other. The third extension 261 of the second expansion circuit breaker 260 is coupled to each other. In addition, the main circuit breaker 210, the first expansion circuit breaker 250, the main circuit breaker 210, and the second expansion circuit breaker 260 are connected to each other through an extension connection conductor 237.

Among the configurations of the main circuit breaker 210, the rest of the configuration except for the extension connection conductor 237 is the same as that of the first and second expansion circuit breakers 250 and 260. In addition, expansion connection conductors 253 and 263 may be formed in the first and second expansion circuit breakers 250 and 260 as necessary.

An airtight plate (not shown) may be interposed between the upper surface of the insulating housing 220 and the support plate 113. The upper surface of the insulating housing 220 is sealed by the sealing plate except for a minimum passage for the circuit breaker insulating rod 233a to move.

The connection bus 257 is inserted into and coupled to the first extension 255 of the first expansion circuit breaker 250, and the first circuit breaker 310 is connected to the connection bus 257. The connection bus 267 is inserted into and coupled to the first extension part 265 of the second expansion circuit breaker 260, and the second circuit breaker 350 is connected to the connection bus 267.

The lower side of the external connection conductor 231 may be connected to the load side. Then, it is obvious that the extension connecting conductor 237 is connected to the power supply side.

The first disconnector 310 and the second disconnector 350 will be described with reference to FIGS. 3, 4, and 6. 6 is an enlarged view of a portion “B” of FIG. 4.

As shown, the first disconnecting unit 310 is an insulating housing 320, the first external connection conductor 331, the second external connection conductor 333, the first internal connection conductor 335, the second internal connection conductor. 337, a disconnector insulating rod 339a, and a disconnector movable conductor 339b.

The insulating housing 320 is formed of a solid insulator such as an epoxy resin, and has a tubular first extension part 321 protruding downward, and a tubular agent protruding upward and communicating with the first extension part 321. The second extension part 323, the first extension part 321, and the tubular third extension part 325 and the 4th extension part 327 which protruded outward from each side of the 2nd extension part 323, respectively are included. do.

The first external connection conductor 331 is inserted and fixed to the third extension part 325 and connected to the power supply side or the load side side, and the second external connection conductor 333 is inserted and fixed to the fourth extension part 327 and thus the first It is connected to the connection bus 257 of the expansion circuit breaker 250.

The first inner connecting conductor 335 is inserted into and fixed in the first extension part 321 to be connected to the first outer connecting conductor 331, and the second inner connecting conductor 337 is the second extension part 323. It is inserted into and fixed to the second external connection conductor 333. Therefore, the second external connection conductor 333 is connected to the load side or the power supply side.

A disconnector insulating rod 339a is positioned at the second extension part 323, and a disconnector movable conductor 339b coupled to the lower end side of the disconnector insulating rod 339a is provided at the second and first extension parts 323 and 321. Located in a straight reciprocating motion. The disconnector insulating rod 339a and the disconnector movable conductor 339b linearly reciprocate together, and the disconnector movable conductor 339b is connected to or disconnected from the second internal connection conductor 337. The disconnector movable conductor 339b is always connected to the first internal connecting conductor 335.

The first extension part 321 may be provided with a ground movable conductor 338 connected to or not connected to the first internal connection conductor 335.

Thus, the main circuit breaker 210 is connected to the power supply side or the load side, the main circuit breaker 210 and the first expansion circuit breaker 250 are connected, and the first expansion circuit breaker 250 and the first circuit breaker 310 are connected. In this case, when the disconnector movable conductor 339b is lowered and connected to the first and second internal connecting conductors 335 and 337, the power supply side and the use destination side are connected.

The second disconnector 350 is the same as the configuration of the first disconnector 310 and is connected to the connection bus 267 of the second expansion circuit breaker 260.

In addition, in the solid insulation switchgear according to the present embodiment, the main circuit breaker 210, the first expansion circuit breaker 250, the first circuit breaker 260, the second circuit breaker 310, and the second circuit breaker 350 are solid insulation. By the one housing 110 is installed.

As shown in FIG. 4, a manipulator is installed on the upper surface of the support plate 113. The manipulator includes a circuit breaker insulated rod and movable conductors 233a and 233b of the main circuit breaker 210, a circuit breaker insulated rod and movable conductor of the first expansion circuit breaker 250, and a circuit breaker insulated rod and movable conductor of the second expansion circuit breaker 260. Permanent magnet type manipulator 280 to operate the, the insulating rod and movable conductor (339a, 339b) of the first disconnector 310 and the disconnector insulating rod and the movable conductor of the second disconnector 350 (370) It includes.

In the solid insulated switchgear according to the present embodiment, when the power supply side and the destination side are disconnected, the breaker movable conductor 233b and the external connection conductor 231 of the main circuit breaker 210 are disconnected through the vacuum interrupter 221a. The first and second expansion circuit breakers 350 and 360 are blocked in the same form as the main circuit breaker 210. The disconnector movable conductor 339b of the first disconnector 310 and the first internal connection conductor 335 are disconnected, and the second disconnector 350 is disconnected in the same form as the first disconnector 310. Therefore, even if an abnormal voltage or the like occurs, there is no fear that the power supply side and the destination side will be connected, and safety accidents are completely prevented.

In addition, since the first expansion circuit breaker 250 and the second expansion circuit breaker 260 can be coupled to the main circuit breaker 210 as necessary, the expansion is easy.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Of course.

110: enclosure
210: main circuit breaker
220: insulation housing
250: first expansion circuit breaker
260: second expansion circuit breaker
310: first disconnector
320: insulation housing
350: second disconnector

Claims (6)

Enclosure;
A first extension part formed in a tubular shape protruding downward and having a vacuum interrupter formed therein, a second extension part protruding upward and communicating with the first extension part, and the first extension part And an insulating housing formed of a solid insulator comprising a tubular third extension portion and a fourth extension portion formed to protrude to one side and the other side, respectively, at a location where the second extension portion meets the first extension portion below the vacuum interrupter. External connection conductor inserted into and fixed to the power supply side or the load side, interconnected and installed in the second extension part so as to be linearly movable, and a circuit breaker insulated rod and a circuit breaker connected to or disconnected from the external connection conductor. Rod, internally connected conductor inserted and fixed from the third extension to the fourth extension and in which the breaker movable conductor is always connected A main circuit breaker including an extension connecting conductor inserted into and fixed to an end of the third extension portion and the fourth extension portion;
A first extension part formed in a tubular shape protruding downward and having a vacuum interrupter formed therein, a second extension part protruding upward and communicating with the first extension part, and the first extension part And an insulating housing formed of a solid insulator comprising a tubular third extension portion and a fourth extension portion formed to protrude to one side and the other side, respectively, at a location where the second extension portion meets the first extension portion below the vacuum interrupter. External connection conductor inserted into and fixed to the power supply side or the load side, interconnected and installed in the second extension part so as to be linearly movable, and a circuit breaker insulated rod and a circuit breaker connected to or disconnected from the external connection conductor. Rod, internally connected conductor inserted and fixed from the third extension to the fourth extension and in which the breaker movable conductor is always connected A first expansion circuit breaker including a first expansion circuit breaker connected to any one of the expansion connection conductors of the main circuit breaker;
A tubular first extension portion protruding downward, protruding upward and protruding outwardly from one side of the tubular second extension portion communicating with the first extension portion, the first extension portion and the second extension portion, respectively An insulating housing, which is a solid insulator having a tubular third extension portion and a fourth extension portion, a first external connection conductor inserted into and fixed to the third extension portion, and connected to the destination of use, and inserted into and fixed to the fourth extension portion. A second external connection conductor connected to the first expansion circuit breaker, a first internal connection conductor inserted into and fixed inside the first extension part, and connected to the first external connection conductor, and inserted into and fixed inside the second extension part of the second extension part; A second internal connection conductor connected to an external connection conductor, a disconnector insulating rod installed in a linear motion on the second extension portion, and positioned in the first and second extension portions in a straight line with the disconnector insulating rod And a first disconnector comprising a disconnector movable conductor connected to and disconnected from the first internally connected conductor and always connected to the second internally connected conductor. The method of claim 1,
A first extension part formed in a tubular shape protruding downward and having a vacuum interrupter formed therein, a second extension part protruding upward and communicating with the first extension part, and the first extension part And an insulating housing formed of a solid insulator comprising a tubular third extension portion and a fourth extension portion formed to protrude to one side and the other side, respectively, at a location where the second extension portion meets the first extension portion below the vacuum interrupter. External connection conductor inserted into and fixed to the power supply side or the load side, interconnected and installed in the second extension part so as to be linearly movable, and a circuit breaker insulated rod and a circuit breaker connected to or disconnected from the external connection conductor. Rod, internally connected conductor inserted and fixed from the third extension to the fourth extension and in which the breaker movable conductor is always connected A second expansion circuit breaker including a second expansion circuit breaker connected to the other expansion connection conductor of the main circuit breaker;
A tubular first extension portion protruding downward, protruding upward and protruding outwardly from one side of the tubular second extension portion communicating with the first extension portion, the first extension portion and the second extension portion, respectively An insulating housing, which is a solid insulator having a tubular third extension portion and a fourth extension portion, a first external connection conductor inserted into and fixed to the third extension portion, and connected to the destination of use, and inserted into and fixed to the fourth extension portion. A second external connection conductor connected to the expansion circuit breaker, a first internal connection conductor inserted into and fixed in the first extension part, and connected to the first external connection conductor, and inserted into and fixed in the second extension part; A second internal connection conductor connected to an external connection conductor, a disconnector insulating rod installed in a linear motion on the second extension portion, and positioned in the first and second extension portions in a straight line with the disconnector insulating rod And a second disconnector comprising a disconnector movable conductor connected to and disconnected from the first internally connected conductor and always connected to the second internally connected conductor. The method of claim 1,
Solid insulation opening and closing device, characterized in that the door is formed on each side of the enclosure. The method of claim 1,
The enclosure is arranged in plurality in succession,
The sides of the enclosures adjacent to each other and facing each other are open,
Solid insulated switchgear, characterized in that the door is formed on the outermost side of the enclosure exposed to the outside. 5. The method of claim 4,
Inside the enclosure there are parts built-in,
Solid insulated switchgear, characterized in that the empty housing is interposed between the housing containing the parts. The method of claim 2,
And the main circuit breaker, the first expansion circuit breaker, the first circuit breaker, the second expansion circuit breaker, and the second circuit breaker are installed in one housing by solid insulation.

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