KR100764066B1 - Breaker/switch for overhead wires - Google Patents

Abstract

A switch for overhead wires is provided to normally detect the state of driving of a high voltage line by using a transformer for detecting both current and voltage. A switch for overhead wires is composed of a switching driver and a housing assembly(300) which includes a first housing(310), a second housing(320), a main bushing, a sub bushing(340), a transformer for both current and voltage(350), a vacuum interrupter and an operator. The first housing(310) and the second housing(320) have flange(311,321) and transformer connecting units(312,322) at one side and the other side respectively, and have leading wire holes which are symmetrical with respect of each flange(311,321) and are connected to the transformer connecting units(312,322). The main bushing penetrates each transformer connecting unit(312,322) of the first housing(310) and the second housing(320), and is screw-coupled on each transformer connecting unit(312,322). The sub bushing(340) is inserted and fixed at the external circumference of the main bushing. The transformer for both current and voltage(350) is penetrated by the sub bushing(340), and is screw-coupled at each transformer connecting unit(312,322) of the first housing(310) and the second housing(320). The vacuum interrupter is fixed at the first housing(310) to face the main bushing inside the first housing(310). The operator is arranged between the main bushing screw-coupled in the second housing(320) and the vacuum interrupter, and switches on/off the vacuum interrupter.

Description

Machining switch {BREAKER / SWITCH FOR OVERHEAD WIRES}

1 is a perspective view showing a conventional processing switch.

FIG. 2 is a schematic cross-sectional view of the A-A line shown in FIG. 1. FIG.

3 is a perspective view showing a processing switch according to the present invention.

4 is a partial schematic cross-sectional view of a processing switch according to the present invention.

5 is a perspective view of the coupled state of the housing according to the present invention.

6 is a partially enlarged cross-sectional view of 5. FIG.

Figure 7 is an exploded perspective view of the housing according to the present invention.

8 is a plan view of a current and voltage sensing combined current transformer according to the present invention.

9 is a cross-sectional view of FIG. 8;

10 is a perspective view of the main bushing according to the present invention.

11 is a perspective view of an insulating cover of a vacuum interrupter according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: housing assembly 110: housing

111: main bushing 112: auxiliary bushing

113: current transformer 114: vacuum interrupter

115: actuator 115a: linear reciprocating member

115b: Lifting rod 200: Opening and closing driver

210: driving means

300: housing assembly 310: first housing

311,321: flange 312,322: current transformer connection

313, 323: lead hole 314, 324: through hole

315,325 bolt holes 316,326 flange seat

320: second housing 330: main bushing

331: flange 332: extension

333: connecting terminal 340: auxiliary bushing

350: current transformer 351: main body

351a: inner diameter 351b: outer diameter

351c: main part 351b1,351b2,351b3: fixing part

351d: voltage sensing ring 351e: current sensing coil

351f: insulator 360: vacuum interrupter

361: vacuum interrupter body 362: insulation packing

362a: Hanging jaw 363: Insulation cover

370: actuator

The present invention relates to a processing switch, and more particularly, to a processing switch having a structure in which the housing of the housing assembly is detachable, and in which a main bushing, a current transformer, and a vacuum interrupter coupled therein are all removable.

In general, the processing switch is a circuit protection device for changing the opening and closing state of the high-voltage circuit by detecting the current or voltage generated on the high-voltage line of the high-voltage circuit installed in the pole.

1 and 2 show a conventional processing switch according to Korean Patent Application No. 2003-0100199 (Application Date: December 30, 2003).

1 and 2, the conventional processing switch is composed of a housing assembly 100 through which the high-voltage line of the high-voltage circuit penetrates, and an opening / closing driver 200 mounted on the lower end of the housing assembly 100.

The housing assembly 100 has a pair of main bushings 111 and a pair of auxiliary bushings 112 through which a high voltage line of a high voltage circuit passes, and connected to both sides of the housing 110. A pair of current-sensing current transformers 113 are mounted on both inner walls, and are connected to the main bushing 111 on one side of the pair of main bushings 111 to contact / block a high voltage line of a high voltage circuit. 114, and an actuator 115 disposed between the main bushing 111 on the other side of the pair of main bushings 111 and the vacuum interrupter 114 to open and close the vacuum interrupter 114. It is configured by.

The actuator 115 includes a linear reciprocating member 115a disposed between the main bushing 111 on the other side of the pair of main bushings 111 and the vacuum interrupter 114. The elevating bar (115b) is connected to the opening and closing the vacuum interrupter (114) while performing a linear reciprocating motion.

The opening and closing driver 200 is provided with a drive means 210 composed of a plurality of links and gear train for lifting and lowering the elevating rod (115b) of the actuator (115).

The conventional processing switch as described above transfers the surge current of the high voltage line sensed by the current transformer 113 to a control box (not shown) connected to the processing switch through a conductive wire, and as described above in the control box. When the driving means 210 of the opening / closing driver 200 raises or lowers the lifting bar 115b as the detected surge current or the surge voltage is compared with a specific reference value and outputs a circuit opening / closing signal, the housing assembly. The vacuum interrupter 114 provided at 100 contacts / blocks the high voltage line of the high voltage circuit to protect the high voltage circuit installed at the pole and the like from the surge current.

However, the above-described conventional processing switchgear is manufactured by insert molding method together with the housing 110 of the housing assembly 100 together with the main bushing 111, the auxiliary bushing 112, the current transformer 113, and the like. If any one of the components is broken or broken, there is a problem in that the entire housing assembly 100 needs to be replaced, which makes the assembly of the vacuum interrupter 114 and the actuator 115 difficult, as well as a product. There is a disadvantage that the cost of maintenance and repair of the increased.

1 and 2 of the prior application patent to form a housing made of an insulator made of a polymer compound to reduce the size and light weight, but before the application patent application was applied to form the housing 100 by one of the insulators reinforcement resin As shown in Utility Model Registration No. 0203808 Optoelectronic Opening Machine (registered on Sep. 07, 2000), it can be confirmed that molding the housing with an insulator is a general technique. There is a limit in making the size small, and since each part joined to the housing is integrally molded, the overall structure is complicated, and the size of the product becomes large, and in case of electrical failure, only a part of the parts cannot be replaced. There are also disadvantages.

Meanwhile, the technology of the first and second bushings, the first and second connecting terminals and auxiliary bushings, and the contact / blocking part, the connecting terminal and the operating part of the patent application is disclosed in Utility Model Registration No. 0203808 Optoelectronic Switch (2000. 09. 07. Self-registration) and Utility Model Registration No. 0290546, a polymer bushing for processing switchgear and transformer (registered on September 16, 2002). Since the process is complicated, the production cost of the product is increased, the overall volume is increased, there is a problem such as low productivity.

In addition, in the case of a conventional vacuum interrupter (contact / breaker) is used by integrally molding an insulating cover made of an insulating material on the outer periphery of the vacuum interrupter made of a conductor, if the electrical failure of the vacuum interrupter or the insulation cover is broken, the entire vacuum interrupter There is also a problem in that the hassle and maintenance costs are excessive.

The present invention is to solve the conventional problems as described above, the object of the present invention is a structure of the housing of the housing assembly is removable, the main bushing and the auxiliary bushing coupled to the housing, the current transformer, the vacuum interrupter are all separated It is to provide a processing switch having a possible structure.

It is another object of the present invention to improve productivity by designing the housing assembly and each component assembled in the housing to be economically relatively easy through the simultaneous engineering design, and to separate and combine the respective components. Because of its simplicity, it is possible to reduce the cost of the product by shortening the work process while providing a manufacturing switchgear for the manufacturer to be competitive.

Still another object of the present invention is to provide a processing switch that can minimize current volume while simplifying the installation structure of the processing switch by manufacturing a current and voltage sensing combined current transformer as an integrated unit.

Still another object of the present invention is to form a vacuum interrupter consisting of an insulating packing and an insulating cover to be separated and coupled to the outer periphery of the vacuum interrupter to replace parts when electrical failure of the vacuum interrupter body or failure of the insulating cover occurs. It is to provide a switchgear for processing that can be replaced easily.

In order to achieve the object of the present invention as described above, the processing switch according to an embodiment of the present invention, a processing assembly comprising a housing assembly through which the high-voltage line of the high-voltage circuit penetrates and an opening and closing driver mounted to the lower end of the housing assembly. The housing assembly,

First and second housings each having a flange and a current transformer connecting portion formed on one side and the other side, symmetrical with respect to each flange, and a conductive wire hole communicating with the current transformer connecting portion is formed in one wall; A main bushing screwed to each of the current transformer connections while passing through the current transformer connections of the first and second housings; An auxiliary bushing inserted into and fixed to an outer circumferential surface of the main bushing; A current and voltage sensing current transformer which is screwed to each current transformer connection portion of the first housing and the second housing while the auxiliary bushing penetrates; A vacuum interrupter tightly fixed to the first housing so as to face the main bushing inside the first housing; And an actuator disposed between the main bushing screwed to the second housing and the vacuum interrupter to open and close the vacuum interrupter.

The current and voltage combined current transformer may include a main body having a ring shape having an upper surface open between an inner diameter portion and an outer diameter portion, and a plurality of fixing portions extending at specific intervals along an edge of the outer diameter portion; A voltage sensing ring fitted into a recess of the main body to be in contact with an inner surface of the inner diameter part and having a conductive wire connected thereto; A current sensing coil disposed at a predetermined distance from the voltage sensing ring in a main portion of the main body and connected to a conductor; And an insulator charged in the main portion of the main body to insulate the voltage sensing ring and the current sensing coil from each other and to seal the main body having an open top surface.

The vacuum interrupter and the vacuum interrupter body for opening and closing the high voltage line by the linear reciprocating motion of the actuator; An insulation packing inserted into outer circumferential surfaces of both ends of the vacuum interrupter body; And an insulation cover that is tightly fixed to the first housing to face the main bushing inside the first housing while covering the vacuum interrupter body in which the insulation packing is inserted.

The insulating packing is characterized in that a plurality of inclined annular engaging jaw is formed on the outer circumferential surface to prevent slipping in the contact surface with the insulating cover.

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

3 to 11, the processing switch according to the present invention includes a housing assembly 300 through which a high voltage line of a high voltage circuit penetrates, and an opening / closing driver mounted to a lower end of the housing assembly 300.

The opening and closing driver is similar to the operating principle of the opening and closing driver 200 as shown in Figures 1 and 2, but the installation structure and the driving method is used to install the opening and closing of a completely different form.

In addition, although not shown in detail in Figures 3 and 11, the actuator assembly 370 is installed in the housing assembly 300 to operate the vacuum interrupter 360 to apply and cut off power.

The actuator 370 has a structure capable of linear reciprocating motion.

The housing assembly 300 has a first housing 310 and a second housing 320 having the same shape as each other, a main bushing 330, an auxiliary bushing 340, a current transformer for a current and voltage combination 350, and a vacuum interrupter ( 360, and the actuator 115 described above.

The first and second housings 310 and 320 have flanges 311 and 321 and current transformer connecting parts 312 and 322 formed at one side and the other side, respectively, and are symmetrical with respect to each of the flanges 311 and 321.

By easily forming and detaching the housing assembly 300, the assembly and maintenance parts of the respective components assembled to the housing 310 and 320 may be simplified.

In addition, since the main bushing 330, the auxiliary bushing 340, the current and voltage sensing current transformer 350, and the vacuum interrupter 360 may be easily separated and combined, the size of the housing assembly 300 may be reduced. It is possible to reduce costs and to simplify the work process.

Each of the first and second housings 310 and 320 has conductive holes 313 and 323 communicating with the current transformer connecting parts 312 and 322 in one wall.

Through holes 314 and 324 are formed in the inner center of the current transformer connecting parts 312 and 322, and a plurality of bolt holes 315 and 325 are formed at the outer circumference of the through holes 314 and 324. The flange mounting parts 316 and 326 are formed on the inner wall surfaces of the through holes 314 and 324 so that the flange 331 formed on one side of the main bushing 330 is tightly fixed and bolted.

The main bushing 330 is inclined in such a manner that the insulating extension portion 332 extends a predetermined length in a horizontal direction in front of the flange 331 so as to penetrate the through holes 314 and 324 and the outer diameter decreases toward the outside. The main bushing 330 is formed to secure the leakage distance for insulation, and the bolt is fastened to the bolt holes 315 and 325 formed in the current transformer connecting parts 312 and 322.

In addition, a connection terminal 333 is integrally formed inside the main bushing 330 to be connected to a vacuum interrupter 360 to be described later.

The auxiliary bushing 340 is inserted into and fixed to an outer circumferential surface of the main bushing 330.

The current and voltage combined current transformer 350 is screwed to each current transformer connection portion 312 and 322 of the first housing 310 and the second housing 320 while the auxiliary bushing 340 is penetrated.

The main body 351 of the current transformer 350 has a ring shape and a recess 351c having an upper surface opened between the inner diameter portion 351a and the outer diameter portion 351b.

In the outer diameter portion 351b of the main body 351, a plurality of fixing portions 351b1, 351b2, and 351b3 are formed at specific intervals along the edge thereof.

Each of the fixing parts 351b1, 351b2, and 351b3 has holes for connecting the main body 351 to the current transformer connecting parts 312 and 322 of the first housing 310 and the second housing 320 by screwing or the like. Formed.

The voltage sensing ring 351d of the main body 351 is fitted into and fixed to the recessed part 351c of the main body 351 so as to abut on the inner surface of the inner diameter part 351a, and the first and second housings 310 and 320. The wires fitted into the wire holes 313 and 323 communicating with the current transformer connection parts 312 and 322 of the are connected.

The lead of the voltage sensing ring 351d is connected to a control box (not shown) that controls the opening and closing operation of the processing switch as described with reference to FIGS. 1 and 2.

The current sensing coil 351e of the main body 351 is disposed at a predetermined distance from the voltage sensing ring 351d in the recessed part 351c of the main body 351, and the first and second housings ( Conductors fitted into the conductor holes 313 and 323 communicating with the current transformer connecting parts 312 and 322 of the 310 and 320 are connected.

The conducting wire of the current sensing coil 351e is connected to a control box (not shown) that controls the opening and closing operation of the processing switch as described with reference to FIGS. 1 and 2.

The insulator 351f of the main body 351 is charged in the main portion 351c of the main body 351 to insulate the voltage sensing ring 351d and the current sensing coil 351f from each other and simultaneously open an upper surface thereof. The main body 351 is sealed.

The insulator 351f preferably uses an insulating resin such as an epoxy resin.

The current transformer 350 may be manufactured by integrally manufacturing the voltage sensing ring 351d and the current sensing coil 351f to reduce the volume, and at the same time, the maintenance may be easy.

The vacuum interrupter 360 is tightly fixed to the first housing 310 so as to face the main bushing 330 inside the first housing 310.

The vacuum interrupter 360 includes a vacuum interrupter body 361 which opens and closes the high voltage line by a linear reciprocating motion of the actuator 370; An insulation packing 362 inserted into outer peripheral surfaces of both ends of the vacuum interrupter body 361; And close to the first housing 310 so as to face the main bushing 330 inside the first housing 310 while covering the vacuum interrupter body 361 in which the insulating packing 362 is inserted. It consists of an insulating cover 363.

The insulating packing 362 has a plurality of inclined annular engaging jaws 362a formed on an outer circumferential surface of the insulating packing 362 to prevent slippage at the contact surface with the insulating cover 363.

Since the vacuum interrupter 360 may replace the broken parts only when the electrical failure or the parts are broken, or when the insulating cover 363 is broken, the vacuum interrupter 360 may be entirely molded when the insulating cover is integrally molded to the vacuum interrupter. It is characterized by the security of troublesome replacement and excessive maintenance costs.

The actuator 370 is not specifically illustrated in FIGS. 3 to 10, but is configured as shown in FIG. 4, and the main bushing 330 and the vacuum interrupter 360 which are screwed to the second housing 320. Disposed between and to open and close the vacuum interrupter 360.

The processing switch according to the present invention configured as described above is the vacuum interrupter 360 installed in the housing assembly 300 by the driving means of the opening and closing driver as shown in Figures 1 and 2 to operate the actuator 370 The high voltage circuit of the high voltage circuit is protected from surge current by contacting / blocking the high voltage line of the high voltage circuit.

The switch for processing according to the present invention described above is not limited to the above-described embodiment, any person having ordinary knowledge in the field of the present invention without departing from the gist of the present invention claimed in the claims below. It will be said that the technical spirit is to the extent that various changes can be made.

According to the present invention as described above, since the housing of the housing assembly is detachable, not only the housing but also any one component of each component such as a main bushing and an auxiliary bushing, a current transformer, a vacuum interrupter, and the like coupled to the housing. In case of failure or breakage, only the corresponding parts can be easily replaced, which can significantly reduce maintenance and repair costs compared to the prior art, and in particular, there is an advantage in that the product is easily disassembled and assembled. Since the current and voltage sense combined current transformer is used, both current and voltage of the high voltage line can be sensed, thereby effectively detecting the operating state of the high voltage line.

The present invention allows the insulation packing and the insulation cover to be easily combined and separated on the outer circumference of the vacuum interrupter so that the vacuum interrupter is electrically defective, or when the insulation cover is broken, only the damaged parts can be used for maintenance. The invention is effective to reduce the cost.

Claims (6)

In the processing switch comprising a housing assembly through which the high voltage line of the high voltage circuit penetrates, and an opening and closing driver mounted on the lower end of the housing assembly, The housing assembly 300, Flange 311 and 321 and current transformer connection portions 312 and 322 are formed on one side and the other side, respectively, and are symmetrical with respect to each flange 311 and 321, and the current transformer connection portions 312 and 322 are respectively symmetrical to each other. First and second housings 310 and 320 formed with conductive wire holes 313 and 323 communicating with the one side wall; A main bushing 330 which is screwed to each current transformer connection part 312 and 322 while passing through each current transformer connection part 312 and 322 of the first housing 310 and the second housing 320; An auxiliary bushing 340 inserted into and fixed to an outer circumferential surface of the main bushing 330; A current and voltage sensing combined current transformer 350 screwed to each current transformer connection part 312 and 322 of the first housing 310 and the second housing 320 while the auxiliary bushing 340 is penetrated; A vacuum interrupter 360 which is tightly fixed to the first housing 310 so as to face the main bushing 330 inside the first housing 310; And An actuator 370 disposed between the main bushing 330 screwed to the second housing 320 and the vacuum interrupter 360 to open and close the vacuum interrupter 360. Processing switch, characterized in that configured to include. According to claim 1, Through holes 314, 324 are formed in the inner center of the current transformer connection portion (312, 322) of the first and second housing, the outer periphery of the through holes (314, 324) A plurality of bolt holes (315) (325) are formed in the processing switchgear, characterized in that the flange mounting portion (316, 326) formed on the inner wall surface of the through hole (314, 324). According to claim 1, The main bushing 330 is a flange 331 is formed on one side to be fixed to the flange seating portion 316, the insulating extension in the horizontal direction in front of the flange 331 ( 332 is formed to be inclined in such a way that the outer diameter decreases toward the outside to extend a predetermined length, the inside of the processing switch characterized in that the connection terminal 333 is formed integrally. According to claim 1, wherein the current and voltage sense combined current transformer 350 A recess 351c having an upper surface opened between the inner diameter portion 351a and the outer diameter portion 351b is formed, and a plurality of fixing portions 351b1, 351b2, 351bc are disposed at specific intervals along the edge of the outer diameter portion 351b. A ring-shaped body 351 that is extended; A voltage sensing ring 351d inserted into and fixed to the recessed portion 351c of the main body 351 to be in contact with an inner surface of the inner diameter portion 351a and having a conductive wire connected thereto; A current sensing coil 351e disposed in a state spaced apart from the voltage sensing ring 351d at a predetermined interval in the main portion 351c of the main body 351 and having a conductive wire connected thereto; And An insulator 351f that is charged in the main portion 351c of the main body 351 to insulate the voltage sensing ring 351d and the current sensing coil 351e from each other and to seal the main body with an open top surface. Processing switch, characterized in that consisting of. The method of claim 1, wherein the vacuum interrupter 360 is A vacuum interrupter body 361 which opens and closes the high pressure line by a linear reciprocating motion of the actuator 370; An insulation packing 362 inserted into outer peripheral surfaces of both ends of the vacuum interrupter body 361; And Insulation tightly fixed to the first housing 310 so as to face the main bushing 330 inside the first housing 310 while covering the vacuum interrupter body 361 in which the insulating packing 362 is inserted. Cover (363) Processing switch, characterized in that consisting of. 6. The processing switch according to claim 5, wherein the insulating packing (362) has a plurality of inclined annular locking jaws (362a) formed on an outer circumferential surface of the insulating packing (362) to prevent slipping on the contact surface with the insulating cover (363).

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