KR100764067B1 - Circuit breaker for gas insulated load switch - Google Patents

Abstract

The present invention relates to a circuit breaker for a gas insulated load breaker, and more particularly, a plurality of insulating films and arc extinguishing gas passages acting on inner and outer circumferential surfaces of a pair of shaft cases each having a fixed electrode and being coupled to each other to form a shaft case assembly. An insulating film is formed on the inner and outer circumferential surfaces of the shaft case in which the partition wall and the gas hole are formed and movable shafts are respectively installed in the shaft case assembly and the shafts are coupled to each other to form the shaft assembly. And a plurality of partition walls and a plurality of gas holes that serve as the arc gas passages, and a shaft in which a plurality of movable electrodes are installed in the shaft case is accommodated.

According to the present invention, when the movable electrode is spaced apart from the fixed electrode, the arc extinguishing gas is concentrated and supplied to the arc extinguishing gas path formed through the partition wall and the gas hole of the shaft case. As it can be separated and combined, it can satisfy mold reduction cost, miniaturization, productivity improvement, ease of operation, and maintenance that can separate and repair only the parts that need to be repaired.

Description

BREAKER OF A GAS INSULATION TYPE LOAD BREAK SWITCH}

1 is a schematic view showing a conventional gas insulated load switch.

Figure 2 is a perspective view of a circuit breaker for a gas insulated load switch according to a first embodiment of the present invention.

3 is a perspective view illustrating a shaft case assembly of a circuit breaker for a gas insulated load switch according to a first embodiment of the present invention.

4 is a front cross-sectional view of FIG. 3.

5 is a perspective view showing a coupled state of the shaft of the present invention.

6 is a side view of the shaft of the present invention;

Figure 7 is a front view of the shaft of the present invention.

8 is a side cross-sectional view of a coupled state of a circuit breaker for a gas insulated load switch according to the first embodiment of the present invention.

9 is a cross-sectional view of the coupled state of the circuit breaker for a gas insulated load switch according to the first embodiment of the present invention.

10 is a perspective view illustrating a shaft case assembly of a circuit breaker for a gas insulated load switch according to a second embodiment of the present invention.

11 is a partially exploded perspective view of a shaft of a circuit breaker for a gas insulated load switch according to a second embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

100: manipulator 200,300,400: breaker

210: housing 310: shaft case

311: partition 311a: insulation groove

311b: support 311c: flange

311d: auxiliary bulkhead 312: gas hole

313,313 ': Main circuit fixed electrode 314,314': Ground circuit fixed electrode

315: shaft through hole 320: shaft

321: insertion groove 322: connection protrusion

323: rotating shaft insertion groove 324: rotating shaft

325: rotation shaft projection 326: manipulator rotary lever hole

327: movable electrode through hole 328: movable electrode separation protrusion

329: movable electrode 329 ': elastic spring

329a: fixed electrode insertion groove 329b: rotary blade

410: shaft case assembly

411: shaft case 412: bulkhead

413: gas hole 414: main circuit fixed electrode

414 ': ground circuit fixed electrode 415: shaft through recess

415 ': shaft through hole 420: shaft assembly

421: shaft 422: fixing protrusion insertion groove

422 ': fixing protrusion 423: connecting protrusion

423 ': connection protrusion insertion groove 424: rotation shaft insertion groove

425: rotating shaft 426: rotating shaft projection

426 ': manipulator rotation lever hole 427: movable electrode through hole

428: movable electrode separation protrusion 429: movable electrode

429 ': elastic spring 429a: fixed electrode insertion groove

429b: Rotary Wings

500: insulation plate

The present invention relates to a circuit breaker for a gas insulated load breaker, and more particularly, a plurality of insulating films and arc extinguishing gas passages acting on inner and outer circumferential surfaces of a pair of shaft cases each having a fixed electrode and being coupled to each other to form a shaft case assembly. On the inner and outer circumferential surfaces of the shaft case in which the partition walls and the gas holes are formed, movable shafts are installed in the shaft case assembly, and a plurality of shafts are coupled to each other to form a shaft assembly, or a plurality of fixed electrodes are installed. The present invention relates to a gas insulated switchgear circuit breaker in which a plurality of partitions and a plurality of gas holes serving as insulating films and arc gas passages are formed, and a shaft in which a plurality of movable electrodes are installed is accommodated in the shaft case.

Conventional gas insulated load breaker is one of the power equipment that is installed outdoor or indoor in underground distribution line with rated voltage of 25.8 kW of distribution system and performs functions such as branching, divisional opening and closing, protection of rear transformer, etc. Arc generated between the fixed electrode and the movable electrode that opens and closes the three-phase four-wire multi-ground distribution line by using a puffer method in which a SOHO gas having incombustible and incombustible properties, such as SF6), is charged and used therein. Soho.

1, the conventional gas insulated load breaker as described above is composed of a manipulator 100 and a breaker 200, a pair of the manipulator 100 and the breaker 200 in a set of a plurality of sets It is mounted to the housing 210.

The manipulators 100 are mounted on one side of the housing 210 at regular intervals, and the inside of the housing 210 is connected to the respective manipulators 100 and rotates to open and close the three-phase distribution line. The circuit breakers 200 including a fixed electrode and a movable electrode to be opened and closed are mounted at predetermined intervals. In particular, the interior of the housing 210 has properties of incombustibility and non-combustibility, such as sulfur hexafluoride gas (SF6). The branch arc extinguishes an arc generated when the fixed electrode and the movable electrode included in each breaker 200 fall while the arc extinguishing gas is charged.

On the other hand, the circuit breaker 200 for gas insulated load switch as described above is connected to the shaft case and the rotating lever of the manipulator 100 and the movable electrode which is connected to or spaced apart from the fixed electrode is typically rotated. It is composed of a shaft assembly to be installed, and in recent years, while various types of circuit breakers 200 are manufactured, not only efforts to improve the arc extinguishing action of the circuit breakers 200, but also active development of technology for reducing mold production costs, miniaturization, etc. Is going on.

Accordingly, the present applicant can satisfy not only the arc action of the circuit breaker for gas insulated load switchgear, but also the reduction of mold production cost, miniaturization, productivity improvement, ease of operation, and ease of maintenance that can be repaired by separating only parts requiring repair. Developed a circuit breaker for gas insulated load switchgear.

An object of the present invention is to install a plurality of fixed electrodes, and a plurality of partition walls are formed on the inner and outer circumference to serve as an insulating film and arc extinguishing gas passage, and a plurality of gas holes penetrating a portion of the inner and outer circumference are formed inside the shaft case. A shaft capable of installing a plurality of movable electrodes is connected to an actuator of a gas insulated load switch to provide a circuit breaker for a gas insulated load switch.

Another object of the present invention is a plurality of partitions are formed on the inner and outer surfaces, the partition of the middle portion to maintain the strength of the case while acting as a reinforcing rib, so as to extend the insulation distance between the partition and the partition. The present invention provides a circuit breaker for a gas insulated switchgear which can prevent a spark and a switch generated due to a short insulation distance by forming a plurality of insulation grooves.

Still another object of the present invention is a plurality of barrier ribs formed in a single mold to install a fixed electrode, and having a plurality of partition walls formed as insulating films and SOHO gas passages on inner and outer circumferential surfaces, and gas holes penetrating a portion of the inner and outer circumferential surfaces. Circuit breaker for gas insulated switchgear, in which a shaft assembly combining a plurality of shafts made of a single mold is connected to a manipulator of the gas insulated switchgear so that the movable electrode can be installed inside the shaft case assembly in which the shaft case is coupled. To provide.

Another object of the present invention is to manufacture a circuit breaker for a gas insulated load breaker relatively easily economically through processing engineering design (simultaneous engineering), and at the same time, a case consisting of a set of molds is symmetrically coupled to each other in a shaft case assembly. It is possible to reduce the cost of mold production by making it possible to improve the productivity and to provide a circuit breaker for a gas insulated switchgear to improve the productivity to the manufacturer.

Still another object of the present invention is that a plurality of shaft case assemblies can be separated and combined, so when an abnormality occurs in the shaft and the case, only the case requiring repair can be separated and repaired separately, thereby simplifying maintenance and replacing parts. The present invention provides a circuit breaker case for a gas insulated load switch.

In order to achieve the object of the present invention as described above, the circuit breaker for a gas insulated load breaker according to the first embodiment of the present invention, a plurality of partition walls are formed on the inner and outer circumferential surface to serve as an insulating film and arc extinguishing gas passage, the upper specific A plurality of gas holes penetrating a portion of the inner and outer circumferential surfaces between the partition walls and the partition walls are formed at predetermined intervals, and the main circuit fixed electrode and the ground circuit fixed electrode are respectively formed on the upper and lower sides of the upper side where the respective gas holes are formed. The main circuit fixed electrode symmetrical with the main circuit fixed electrode of the other side and the ground circuit fixed electrode symmetrical with the ground circuit fixed electrode of the other side are installed at the upper and lower sides of the upper side of the upper side, respectively. A shaft case having a through hole formed therein; And

At one end in the longitudinal direction of the body, a connection protrusion protrudes between the pair of insertion grooves and the pair of insertion grooves, and the connection protrusion is formed with a rotary shaft insertion groove connected to the manipulator of the gas insulated load switch. An insertion groove is formed at the other end of the direction, and a pair of movable electrode through holes are formed at regular intervals on both sides in the width direction of the body, and movable electrode spaced apart protrusions are formed between the movable electrode through holes, and on both sides in the width direction of the body. And a plurality of rotating blades formed at the tip of the fixed electrode insertion grooves in contact with the movable electrodes at predetermined intervals, the shafts being accommodated in the shaft case and connected to a manipulator of the gas insulated switchgear to rotate. It features.

In order to achieve the object of the present invention as described above, the circuit breaker for a gas insulated load switch according to the second embodiment of the present invention, is made of a single mold and a plurality of partition walls are formed on the inner and outer peripheral surfaces to serve as an insulating film and arc extinguishing gas passage A gas hole penetrating a portion of the inner and outer circumferential surfaces is formed between the partition wall and the partition wall of the upper central part, and the main circuit fixed electrode and the ground circuit fixed electrode are respectively disposed on the upper and lower ends of one side of the upper central part where the gas hole is formed. A plurality of shaft cases, each of which has a semicircular shaft through recess formed in the front central portion, have a pair of shaft through recesses contacting each other to form a shaft through hole, and the main circuit fixed electrodes are disposed diagonally to each other. Each of the ground circuit fixed electrodes are positioned diagonally to each other A shaft case assembly configured to engage with each pair so that the shaft through holes communicate with each other; Rotation is made of a single mold and the connecting protrusion is projected between the pair of fixed protrusion insertion groove and the pair of fixed protrusion insertion groove in the longitudinal end of the body and the connection protrusion is connected to the manipulator of the gas insulated switchgear A shaft insertion groove is formed, and at the other end of the body in the longitudinal direction, a pair of fixing protrusions and a connection protrusion insertion groove are formed between the pair of fixing protrusions, and a pair of movable electrode through-holes are formed in the central portion in the width direction of the body. And a plurality of shafts having movable electrode spaced apart protrusions formed between the movable electrode through-holes, and rotating blades formed at the front end of the fixed electrode insertion grooves contacting the movable electrodes at each central portion of both sides of the body in the width direction. Each of which is housed inside a pair of shaft cases of the shaft case assembly. It characterized by consisting of; is connected to the actuator shaft of the load break switch assembly that pivots.

Hereinafter, the first and second embodiments of the present invention will be described with reference to the accompanying drawings.

Example 1

2 to 9, the circuit breaker 300 for gas insulated load switch according to the first embodiment of the present invention is a three-phase four-wire multi-ground type, on the top of the two shaft case 310 that can be separated and combined. It is composed of a pair of shaft case 310 formed by coupling both sides of the formed flange (311c) with a bolt, the shaft 320 is installed inside the shaft case (310).

The shaft case 310 has a plurality of partition walls 311 that serve as insulating films and SOHO gas passages on inner and outer circumferential surfaces, and a plurality of gas holes 312 penetrating a portion of the inner and outer circumferential surfaces between the specific partition walls and the partition walls on the upper side. ) Are formed at regular intervals.

A plurality of insulating grooves 311a are formed between the partitions 311 and 311 so as to extend an insulating distance, and the gas hole 312 in the middle of the plurality of insulating grooves 311a. Is formed.

The fixed electrode support part 311b is formed at the upper and lower sides of one side of the upper central part where the gas hole 312 is formed, and the main circuit fixed electrode 313 is installed at the upper part, and the ground circuit fixed electrode 314 is formed at the lower part of the gas hole 312. ) Is installed.

The shaft case 310 is provided with a main circuit fixed electrode 313 and a ground circuit fixed electrode 314 at the upper and lower ends of one side of the upper side where the respective gas holes 312 are formed. Ground circuit fixed electrode 314 'which is symmetrical with ground circuit fixed electrode 314 on the other side and main circuit fixed electrode 313' which is symmetrical with main circuit fixed electrode 313 on the other side, respectively, on the top and bottom of the other side. Is provided, and the shaft through-hole 315 is formed in the front center part.

The shaft 320 has a connection protrusion 322 between the pair of insertion grooves 321 and the pair of insertion grooves 321 at one end in the longitudinal direction of the body, and the connection protrusion 322 has a gas. A rotating shaft insertion groove 323 is formed to be connected to the manipulator (see FIG. 1) of the insulation load switch, and an insertion groove 321 is formed at the other end in the longitudinal direction of the body.

On one side of the rotary shaft 324 connected to the manipulator of the gas insulated load breaker is formed a rotary shaft protrusion 325 is inserted into the rotary shaft insertion groove 323 formed in the connection protrusion 322 of the shaft 320. On the other side, a manipulator rotating lever hole 326 is formed to be rotatably coupled with a rotary lever (not shown) of the manipulator of the gas insulated load switch.

The shaft 320 has a pair of movable electrode through-holes 327 formed at predetermined intervals on both sides in the width direction of the body, and a movable electrode separation protrusion 328 is formed between the movable electrode through-holes 327. have.

The movable electrode 329 is fixed while maintaining tension by an elastic spring 329 'which is bolted through the movable electrode separation protrusion 328 formed between the movable electrode through holes 327.

The shaft 320 has a plurality of rotating blades 329b having a fixed electrode insertion groove 329a at the tip thereof protruding at predetermined intervals on both sides in a width direction of the body.

On the other hand, the rotary blade 329b is bent and protruded to the front, the rear surface, at this time by the rounded inner surface to be able to smoothly move the arc generated inside the shaft case (310).

The shaft 320 is accommodated in the shaft case 310 and connected to the manipulator of the gas insulated load switch to rotate.

The front and rear surfaces of the shaft case 310 is provided with an insulating plate 500 made of a square plate, and the front and bottom of the front insulating plate 500, the bracket is installed to install the inside of the housing 210 to the bracket It is fixed to the inside of the housing 210, the insulating plate 500 serves as an insulating film so that electricity does not flow while maintaining a predetermined interval with the housing 210 made of metal.

The circuit breaker for a gas insulated load switch according to the first embodiment of the present invention configured as described above operates as follows.

The circuit breaker 300 is connected to the main circuit fixed electrodes 313 and 313 'installed so that the movable electrodes 329 installed on the shaft 320 are positioned diagonally to each other on the shaft case 310 in a normal operating state. Accordingly, the high voltage electricity flows normally through the three-phase four-wire multi-ground distribution line in which the breaker 300 is installed.

Rotation lever of the manipulator of the gas insulated load switch when the ground fault occurs in a state in which high voltage electricity flows normally through a three-phase four-wire multi-ground distribution line provided with the circuit breaker 300 as described above. And the rotation shaft 324 coupled to be rotated by the driving of a motor (not shown) for rotating the rotary lever of the manipulator. Automatically switch to shut-off operation. Even if the ground fault does not occur, if the branch, line opening, maintenance, etc. of the line are required, the operator may automatically or manually switch to the breaking operation state of the breaker 300.

When the circuit breaker 300 is blocked, when the shaft 320 rotates as the rotary shaft 324 rotates, the shaft case 310 moves while the movable electrodes 329 installed on the shaft 320 rotate. ) Are spaced apart from the main circuit fixed electrodes 313 and 313 'installed to be disposed diagonally to each other, and are connected to the ground circuit fixed electrodes 314 and 314' installed to be disposed diagonally to each other in the shaft case 310. The high-voltage electricity flowing through the three-phase four-wire multi-ground distribution line in which the breaker 300 is installed is grounded while being cut off.

In particular, an arc generated when the movable electrode 329 is spaced apart from the main circuit fixed electrodes 313 and 313 ′ is formed by the barrier rib 311 and the gas hole 312 serving as an insulating film and an arc extinguishing path of the shaft case 310. The arc extinguishing gas filled in the circuit breaker housing 210 (see FIG. 1) is concentrated and supplied to the arc extinguishing gas path formed through the extinguished gas.

In addition, the circuit breaker 300 installed inside the housing 210 maintains a predetermined interval with the housing 210 made of metal by the insulating plates 500 on the front and rear surfaces to perform an insulating film function so that electricity does not flow.

Example 2

10 to 11, the circuit breaker 400 for a gas insulated load switch according to the second embodiment of the present invention is a three-phase four-wire multi-ground type, two six shaft cases 411 that can be separated and combined. It is composed of a shaft case assembly 410 formed by connecting three pairs formed by coupling again, and a shaft assembly 420 formed by connecting three detachable shafts 421.

The shaft case 411 is made of a single mold, and a plurality of partition walls 412 are formed on the inner and outer circumferential surfaces to serve as an insulating film and the arc gas passage, and penetrates a part of the inner and outer circumferential surfaces between the partition walls and the partition walls in the upper center portion. The gas hole 413 is formed.

The shaft case 411 is provided with a main circuit fixed electrode 414 and a ground circuit fixed electrode 414 ′ at upper and lower ends of one side of an upper central portion where the gas hole 413 is formed, and the front center portion. A semi-circular shaft through recess 415 is formed in the groove.

The pair of shaft cases 411 each of the shaft through recess 415 abuts each other to form a shaft through hole (415 '), each of the main circuit fixed electrodes 414 are positioned diagonally to each other, Each of the ground circuit fixed electrodes 414 'is coupled to be positioned in a diagonal direction with each other.

Each pair of shaft case 411 coupled as described above is coupled to each other so that the shaft through hole 415 ′ communicates with each other to form a shaft case assembly 410.

The shaft 421 is made of a single mold, and the connecting protrusion 423 is protruded between the pair of fixing protrusion insertion grooves 422 and the pair of fixing protrusion insertion grooves 422 at one end in the longitudinal direction of the body. In addition, the connection protrusion 423 has a rotation shaft insertion groove 424 connected to the manipulator (see FIG. 1) of the gas insulated load switch.

On one side of the rotary shaft 425 connected to the manipulator of the gas insulated load switch is formed a rotary shaft protrusion 426 is inserted into the insertion groove 424 formed in the connection protrusion 423 of the shaft 421, On the other side, a manipulator rotating lever hole 426 ′ that is rotatably coupled to a rotating lever (not shown) of the manipulator of the gas insulated load switch is formed.

On the other end of the shaft 421 in the longitudinal direction, a connection protrusion insertion groove 423 'is formed between the pair of fixing protrusions 422' and the pair of fixing protrusions 422 ', and the width of the body A pair of movable electrode through holes 427 is formed in the central portion of the direction, and a movable electrode spaced protrusion 428 is formed between the movable electrode through holes 427.

The movable electrode 429 is fixed while maintaining tension by an elastic spring 429 'which is bolted through the movable electrode separation protrusion 428 formed between the movable electrode through holes 427.

Rotating blades 429b having protruding fixed electrode insertion grooves 429a in contact with the movable electrodes 429 protrude from the central portions of both sides in the width direction of the body of the shaft 421.

The plurality of shafts 421 are respectively accommodated in the pair of shaft cases 421 of the shaft case assembly 420 and connected to the manipulator of the gas insulated load switch.

The circuit breaker 400 for a gas insulated load switch according to the second embodiment of the present invention configured as described above operates as follows.

The breaker 400 has movable electrodes 429 installed on each shaft 421 of the shaft assembly 420 in a normal operating state, and are positioned diagonally to each shaft case 411 of the shaft case assembly 410. It is connected to the main circuit fixed electrode 414 provided so that the high-voltage electricity flows normally through the three-phase four-wire multi-ground distribution line provided with the circuit breaker 400.

Rotating lever (not shown) of the manipulator of the gas insulated switchgear when a ground fault occurs in a state in which high voltage electricity flows normally through a three-phase four-wire multi-ground distribution line provided with the circuit breaker 400 as described above. The circuit breaker 400 performs a function, such as protection of a rear stage transformer, as the rotary shaft 425 coupled to be rotatable rotates by driving of a motor (not shown) to rotate the rotary lever of the manipulator. Automatically switch to shut-off operation. Even if the ground fault does not occur, if the branch, line opening, maintenance, etc. of the line are required, the operator may automatically or manually switch to the breaking operation state of the breaker 400.

When the circuit breaker 400 operates in a blocking operation, when each shaft 421 of the shaft assembly 420 rotates as the rotary shaft 425 rotates, the movable electrode 429 installed in each shaft 421 is rotated. Each shaft case 411 of the shaft case assembly 410 while being spaced apart from the main circuit fixed electrode 414 which is installed so as to rotate in a diagonal direction with each shaft case 411 of the shaft case assembly 410. Is connected to the ground circuit fixed electrode 414 'installed to be disposed in a diagonal direction to each other, and accordingly, high voltage electricity flowing through the three-phase four-wire multi-ground distribution line provided with the circuit breaker 400 is cut off and grounded. .

In particular, an arc generated when the movable electrode 429 is spaced apart from the main circuit fixed electrode 414 may form a partition wall 412 and a gas hole 413 that serve as an insulating film and an arc extinguishing path of each shaft case 411. The arc extinguishing gas filled in the circuit breaker housing 210 (refer to FIG. 1) to the arc extinguishing gas path formed through the condensed gas is easily extinguished.

What has been described above is only the embodiments for implementing the gas insulated load breaker circuit breaker according to the present invention, the present invention is not limited to the above embodiments, it departs from the gist of the invention claimed in the following claims Without this, anyone skilled in the art to which the present invention pertains will have the technical spirit of the present invention to the extent that various modifications can be made.

According to the present invention as described above, when the movable electrode is spaced apart from the fixed electrode, the arc extinguishing gas is concentrated and supplied to the arc extinguishing gas passage formed through the partition wall and the gas hole of the shaft case, so that the extinguishing action of the circuit breaker is excellent. Since the shaft case can be separated and combined, it can satisfy all of the reduction of mold manufacturing cost, miniaturization, productivity improvement, ease of operation, and maintenance that can separate and repair only the parts requiring repair.

In fact, when the SOHO gas is concentrated and supplied to the SOHO gas passage formed through the partition walls and the gas holes of the shaft cases as in the present invention, an arc generated when the movable electrode is separated from the main circuit fixed electrode is easier than in the related art. Can be so appealing.

In addition, as shown in the present invention, the shaft case may be manufactured in a single mold that can be detachably coupled, and the three pairs formed by combining the six shaft cases two by two may be reconnected to form a shaft case assembly, or the shaft may be separated into a single mold. By manufacturing and connecting the three shafts to form a shaft assembly, it is possible to reduce the manufacturing cost of the mold 6 times or 3 times compared to the conventional, miniaturizing the circuit breaker, improve productivity and easily perform the assembly and maintenance work.

Claims (10)

On the inner and outer circumferential surfaces, a plurality of partition walls 311 serving as an insulating film and a arc gas passage are formed, and a plurality of gas holes 312 penetrating a part of the inner and outer circumferential surfaces between the specific partition walls 311 and the partition walls 311 on the upper side are formed. The main circuit fixed electrodes 313 and 313 'and the ground circuit fixed electrodes 314 and 314' are formed at regular intervals, respectively, on the upper and lower ends of one side of the upper side where the respective gas holes 312 are formed. And a ground circuit symmetrical with the main circuit fixed electrode 313 'and the ground circuit fixed electrode 314 of the other side, respectively, symmetrical with the main circuit fixed electrode 313 of the other side at the upper and lower sides of the other side of the upper side. A shaft case 310 in which a fixed electrode 314 'is provided and a shaft through hole 316 is formed in the front center portion thereof; And A connecting protrusion 322 protrudes between the pair of insertion grooves 321 and the pair of insertion grooves 321 at one end in the longitudinal direction of the body, and the operator 100 of the gas insulated switchgear is connected to the connection protrusions 322. Rotating shaft insertion groove 323 is formed to be connected to the other end of the longitudinal direction of the body is formed with the insertion groove 321, the pair of movable electrode through holes 327 at regular intervals on both sides in the width direction of the body And a movable electrode spaced apart protrusion 328 is formed between the movable electrode through holes 327, and fixed electrode insertion grooves 329a are formed at the front end thereof in contact with the movable electrode 329 at both sides in the width direction of the body. A plurality of rotary blades 329b protruding at regular intervals, the shaft being accommodated in the shaft case 310 and connected to the manipulator 100 of the gas insulated load switch; Circuit breaker for gas insulated load switch, characterized in that consisting of. According to claim 1, A plurality of insulating grooves (311a) is formed between the partition wall 311 and the partition wall 311 formed on the inner and outer peripheral surface, the upper side of one side of the upper central portion where the gas hole 312 is formed The fixed electrode support part 311b is formed in the bottom and bottom, respectively, and the main circuit fixed electrode (313) (313 ') and the ground circuit fixed electrode (314, 314') is installed, characterized in that the circuit breaker for a circuit breaker. According to claim 1 or 2, wherein the shaft case 310 is symmetrically in close contact with each other to fix both sides of the flange (311c) protruding from the upper, lower portion with a bolt, the central portion of the shaft case 310 abuts the shaft The through hole 316 is formed, and each of the main circuit fixed electrodes 313 and 313 'is disposed in a diagonal direction, and each of the ground circuit fixed electrodes 314 and 314' is formed in a diagonal direction. Circuit breaker for gas insulated load switchgear. The movable electrode 329 is maintained in tension by an elastic spring 329 'which is bolted through the movable electrode separation protrusion 328 formed between the movable electrode through hole 327. Circuit breaker for gas insulated load switch, characterized in that fixed. According to claim 1, One side of the rotary shaft 324 connected to the manipulator 100 of the gas insulated switchgear inserted and fixed in the rotary shaft insertion groove 323 formed in the connection protrusion 322 of the shaft 320 The rotating shaft protrusion 325 is formed, and the other side is a gas insulator, characterized in that the manipulator rotating lever hole 326 is coupled to the rotation lever of the manipulator 100 of the gas insulated load switch Breaker for load breaker. According to claim 1 or 5, wherein one end of the rotary shaft 324, two rotary shaft projections 325 are formed, the rotary shaft projections 325 to the side plate of the rotary shaft 324 It is coupled to the interference, the two rotary shaft projections 325 is a circuit breaker for gas insulated switchgear, characterized in that coupled to the rotation shaft insertion groove 323 formed in the connection protrusion 322 of the shaft 320. . 2. The circuit breaker for a gas insulated switchgear according to claim 1, wherein an insulating plate (500) is formed on the front and rear surfaces of the shaft case (310). A plurality of barrier ribs 412 are formed of a single mold and serve as an insulating film and an arc gas passage on inner and outer circumferential surfaces, and a gas hole penetrating a portion of the inner and outer circumferential surfaces between the partition wall 412 and the partition wall 412 in the upper center ( 413 is formed, and the main circuit fixed electrode 414 and the ground circuit fixed electrode 414 'are respectively provided at the upper and lower ends of one side of the upper central part in which the gas hole 413 is formed, A plurality of shaft cases 411 in which shaft through recesses 415 are formed, each of the shaft through recesses 415 abut against each other to form a shaft through hole 415 'and each of the main circuit fixed electrodes 414 are positioned diagonally to each other, and each of the ground circuit fixed electrodes 414 'is positioned to be diagonal to each other, and each pair of the shaft through holes 415' is in communication with each other. A shaft case assembly 410 formed to be coupled to each other; And The connection protrusion 423 is formed between the pair of fixing protrusion insertion grooves 422 and the pair of fixing protrusion insertion grooves 422 at one end in the longitudinal direction of the body, and the connection protrusion 423 The rotary shaft insertion groove 424 is formed to be connected to the manipulator 100 of the gas insulated load switch, and a pair of fixing protrusions 422 'and a pair of fixing protrusions 422' are formed at the other end in the longitudinal direction of the body. A connection protrusion insertion groove 423 'is formed therebetween, and a pair of movable electrode through holes 427 is formed at the center portion in the width direction of the body, and a movable electrode separation protrusion between the movable electrode through holes 427 ( A plurality of shafts 421 having a plurality of shafts 428 formed therein and having a fixed electrode insertion groove 429a at the front end thereof protruding from each of the central portions of both sides of the body in the width direction of the body are formed. With each shaft k A shaft assembly 420 accommodated inside the pair of shaft cases 411 of the switch assembly 410 and connected to the manipulator 100 of the gas insulated load switch; Circuit breaker for gas insulated load switch, characterized in that consisting of. The method of claim 8, wherein the movable electrode 429 is fixed while maintaining the tension by the elastic spring 429 'which is bolted through the movable electrode separation protrusion 428 formed between the movable electrode through hole 427. Breaker for gas insulated load switch. The method of claim 8, wherein one side of the rotary shaft 425 connected to the manipulator 100 of the gas insulated switchgear is inserted into the rotary shaft insertion groove 423 'formed in the connection protrusion 423 of the shaft 421. A fixed rotating shaft protrusion 426 is formed, and on the other side, a manipulator rotating lever hole 426 'coupled to the rotating lever of the manipulator 100 of the gas insulated switchgear is rotatable. Circuit breaker for gas insulated load switch.

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