KR101022039B1 - Gas circuit breaker - Google Patents

Gas circuit breaker Download PDF

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Publication number
KR101022039B1
KR101022039B1 KR1020060053148A KR20060053148A KR101022039B1 KR 101022039 B1 KR101022039 B1 KR 101022039B1 KR 1020060053148 A KR1020060053148 A KR 1020060053148A KR 20060053148 A KR20060053148 A KR 20060053148A KR 101022039 B1 KR101022039 B1 KR 101022039B1
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KR
South Korea
Prior art keywords
arc contact
contact
circuit breaker
link member
link arm
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KR1020060053148A
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Korean (ko)
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KR20070118885A (en
Inventor
심규태
김경민
최병화
최인호
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현대중공업 주식회사
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Priority to KR1020060053148A priority Critical patent/KR101022039B1/en
Publication of KR20070118885A publication Critical patent/KR20070118885A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/42Driving mechanisms
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/904Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism characterised by the transmission between operating mechanism and piston or movable contact
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035Gas-insulated switchgear

Abstract

본 발명은 가스차단기(GIS) 이중동작에 관한 것으로서, 차단부 크기의 변경없이 고장전류 차단 및 절연회복성능을 향상시킬 수 있도록 한 이중동작 가스차단기에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas circuit breaker (GIS) dual operation, and to a dual operation gas circuit breaker capable of improving fault current blocking and insulation recovery performance without changing the size of the breaker.

본 발명에 따른 차단기는, 고장전류를 차단하기 위한 것으로 가속아크접점, 가동접점, 파퍼실린더, 노즐 및 피스톤을 갖는 차단부와, 상기 차단부를 구동하기 위한 구동부를 구비하는 차단기에 있어서, 상기 노즐의 단부에 제1 링크부재와 제2 링크부재를 결합하여 가동부의 이동시 그 이동력을 이용하여 상기 가속아크접점이 반대 방향으로 이중동작 하도록 구성함으로서, 개극속도 및 극간거리를 증가시켜 고장차단 및 절연회복 성능을 향상 시킬 수 있도록 한 이중동작 장치에 관한 것이다.In the circuit breaker according to the present invention, a circuit breaker having a breaker having an acceleration arc contact, a movable contact, a pap cylinder, a nozzle and a piston, and a drive unit for driving the breaker, for breaking a fault current, By combining the first link member and the second link member at the end, the acceleration arc contact is dually operated in the opposite direction by using the moving force when the movable part is moved, thereby increasing the opening speed and the inter-pole distance, and thus preventing breakdown and insulation recovery. The present invention relates to a double-acting device that can improve performance.

가스차단기, 파퍼실린더, 작동로드, 가동아크접점, 가속아크접점, Gas circuit breaker, pop cylinder, working rod, movable arc contact, acceleration arc contact,

Description

이중 동작 가스차단기{Gas circuit breaker}Dual Acting Gas Breaker

도 1 은 본 발명의 이중동작 가스차단기를 보인 도면.1 is a view showing a double-acting gas circuit breaker of the present invention.

도 2 는 본 발명의 이중동작 가스차단기의 작동상태를 보인 도면.Figure 2 is a view showing the operating state of the dual action gas circuit breaker of the present invention.

도 3 은 본 발명에 적용된 가이드를 보인 평면도,3 is a plan view showing a guide applied to the present invention,

도 4 는 본 발명에 적용된 제1 연결부재를 보인 평면도,Figure 4 is a plan view showing a first connecting member applied to the present invention,

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1: 파퍼실린더, 2: 작동로드,1: pap cylinder, 2: working rod,

3: 피스톤, 4: 가동컨텍트,3: piston, 4: movable contact,

5: 가동아크접점, 6: 노즐,5: movable arc contact, 6: nozzle,

7: 제1 링크부재, 8: 고정컨텍트,7: first link member, 8: fixed contact,

9: 가속아크접점, 10: 제2 링크부재,9: acceleration arc contact, 10: second link member,

11: 제1 링크암, 12: 가이드,11: first link arm, 12: guide,

13: 샤클, 14: 축결합부,13: shackle, 14: shaft coupling,

15: 힌지축, 16: 제2 링크암,15: hinge axis, 16: second link arm,

17: 결합단부, 18: 제3 링크암, 17: coupling end, 18: third link arm,

19: 가이드 튜브,19: guide tube,

본 발명은 가스차단기(GIS) 이중동작에 관한 것으로서, 차단부 크기의 변경없이 고장전류 차단 및 절연회복성능을 향상시킬 수 있도록 한 이중동작 가스차단기에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas circuit breaker (GIS) dual operation, and to a dual operation gas circuit breaker capable of improving fault current blocking and insulation recovery performance without changing the size of the breaker.

본 발명에 따른 차단기는, 고장전류를 차단하기 위한 것으로 가속아크접점, 가동접점, 파퍼실린더, 노즐 및 피스톤을 갖는 차단부와, 상기 차단부를 구동하기 위한 구동부를 구비하는 차단기에 있어, 상기 노즐의 단부에 제1 링크부재와 제 2링크부재를 결합하여 가동부의 이동시 그 이동력을 이용하여 상기 가속아크접점이 반대 방향으로 이중동작 하도록 구성함으로서, 개극속도 및 극간거리를 증가시켜 고장차단 및 절연회복 성능을 향상시킬 수 있도록 한 이중동작 장치에 관한 것이다.The circuit breaker according to the present invention is a circuit breaker having a breaker having an acceleration arc contact, a movable contact, a pap cylinder, a nozzle, and a piston, and a driving part for driving the breaker, for breaking a fault current. Combining the first link member and the second link member at the end to configure the dual action of the acceleration arc contact in the opposite direction by using the movement force when the movable part is moved, thereby increasing the opening speed and the inter-pole distance to break the fault and recover the insulation The present invention relates to a double-acting device capable of improving performance.

종래의 파퍼 소호방식 차단기의 차단부는 고정주접점, 고정 아크접점, 가동주접점, 가동 아크접점, 노즐, 파퍼 실린더, 피스톤 등으로 구성된다.The breaker of the conventional popper extinguishing circuit breaker includes a fixed main contact, a fixed arc contact, a movable main contact, a movable arc contact, a nozzle, a paper cylinder, a piston, and the like.

이는 정상상태에서는 고정부와 가동부가 접촉되어 있는 투입상태를 유지하면서 정상전류를 흘리게 되지만, 전력계통에 이상이 발생하여 고장전류가 흐르게 되면 회로를 차단하여 부하 및 기타 전력기기를 보호해야 한다.In the normal state, the normal current flows while the fixed part and the moving part are in contact with each other. However, when a fault occurs in the power system and a fault current flows, the circuit must be blocked to protect the load and other power equipment.

차단기의 동작은 구동부의 구동코일이 동작신호에 의해 여자되어 구동 시스템이 동작하면, 차단부의 가동부분이 움직이게 되고, 이에 의해 파퍼실린더 내부 의 가스는 피스톤에 의해 압축되고, 가동부가 이동함에 따라 가동 아크접점과 고정 아크접점이 상호 분리되며, 두 접점 사이에는 아크가 발생된다.The operation of the breaker is that when the drive coil of the drive unit is excited by the operation signal and the drive system is operated, the movable part of the breaker unit is moved, whereby the gas inside the popper cylinder is compressed by the piston, and the movable arc moves as the movable unit moves. The contact and the fixed arc contact are separated from each other, and an arc is generated between the two contacts.

발생된 아크는 파퍼 실린더에서 압축된 SF6 가스에 의해 소호되고, 극간의 절연이 회복되면 차단기는 고장 전류를 차단하게 되는 것이다.The generated arc is extinguished by SF6 gas compressed in the popper cylinder, and the breaker blocks the fault current when the insulation between the poles is restored.

그러나, 종래기술은 전력계통의 용량이 점차 증진되고, 차단기의 설계용량 및 차단전류가 증대됨에 따라 대형화 제품이 필요하게 되며, 이와 같이 대용량의 고장전류를 차단하기 위해서 차단기는 고속으로 동작하는 동시에 극간의 거리가 충분히 멀어야 하는데, 종래기술의 경우 극간의 거리를 길게 하면, 가동부 행정거리(stroke)가 길어지고 파퍼 실린더의 체적도 커지게 되어 동일한 조작력으로 동작할 경우 파퍼 실린더 내의 압력상승이 저하되어 차단성능이 떨어지게 되고, 압력상승의 저하를 방지하기 위하여 개극속도를 높이려면 구동부의 조작력을 상대적으로 증대시켜야 하는 문제가 발생하게 되는데 조작력을 증대시키는 것을 한계가 있을 뿐만 아니라 비경제적이어서 실현하기 어렵게 되는 문제점이 발생하고 있었다.However, in the prior art, as the capacity of the power system is gradually increased and the design capacity and the breaking current of the circuit breaker are increased, a large sized product is required. In order to block a large amount of fault current, the circuit breaker operates at a high speed and at the same time. If the distance between the poles is long enough in the prior art, the stroke length of the moving part becomes longer and the volume of the popper cylinder is also increased. The blocking performance is lowered, and the problem of having to increase the operating force of the driving unit relatively increases in order to increase the opening speed in order to prevent a drop in pressure rise. There was a problem.

따라서, 상기 문제점을 해결하기 위한 본 발명은 가동부 노즐이 후퇴시 작동암에 의해 가속아크접점이 반대방향으로 이중동작하도록 구성함으로써, 가스차단기의 차단성능과 밀접한 관계가 있는 개극속도를 증가시키고, 차단부 크기의 변경없이 고장전류 차단 및 절연회복성능을 향상시킬 수 있도록 한 이중동작 가스차단기를 제공함을 목적으로 한다.Accordingly, the present invention for solving the above problems is configured to double the operation of the acceleration arc contact in the opposite direction by the operating arm when the movable nozzle is retracted, thereby increasing the opening speed which is closely related to the breaking performance of the gas circuit breaker, It is an object of the present invention to provide a dual operation gas circuit breaker that can improve the fault current blocking and insulation recovery performance without changing the size.

상기 목적달성을 위한 본 발명은, 노즐을 구비한 파퍼실린더의 일측 끝단에 가동아크접점을 구비한 가동컨텍트가 형성되고, 상기 파퍼실린더와 대향하도록 고정컨텍트가 형성되며, 상기 가동컨텍트를 전후진 작동시키기 위한 작동로드가 파퍼실린더 내측으로 삽입되어있는 가스 차단기에 있어서,According to the present invention for achieving the above object, a movable contact having a movable arc contact is formed at one end of a pap cylinder provided with a nozzle, and a fixed contact is formed to face the pap cylinder, and the movable contact is moved back and forth. In the gas circuit breaker having an actuating rod inserted into the pop cylinder,

상기 고정컨텍트의 중심부로 전후진 가능하게 가속아크접점을 삽입하고, 상기 노즐 단부에 제 1 링크부재를 형성하며, 상기 제 1 링크부재에 가속아크접점의 후단부를 향하도록 일정길이의 제 2 링크부재를 연결하며, 일측이 상기 제 2 링크부재와 연결되고 타측이 상기 가속아크접점의 후단부에 연결되어 상기 노즐이 후퇴시 이와 반대방향으로 가속아크접점이 움직이도록 하는 연결체를 구성한 것을 특징으로 한다.A second link member having a predetermined length is inserted into the center of the fixed contact so as to move forward and backward, a first link member is formed at the nozzle end, and the first link member faces a rear end of the acceleration arc contact. And one side is connected to the second link member, and the other side is connected to the rear end of the acceleration arc contact so that the acceleration arc contact moves in the opposite direction when the nozzle is retracted. .

또한, 본 발명에 있어, 상기 연결체는 가속아크접점의 전후진을 안내하는 가이드를 구비하고, 상기 가이드상에 형성된 축결합부에 제 1 링크암을 힌지축 결합하여 회동가능토록 하면서 상기 제 1 링크암의 일측을 제 2 링크부재의 끝단에 연결하며, 상기 가이드의 외곽에 형성된 결합단부에 제 3 링크암을 회전가능하게 결합하되, 상기 제 3 링크암의 작동단이 샤클에 의해 가속아크접점의 후단부에 연결되도록 하고, 상기 제 1 링크암의 끝단과 제 3 링크암의 중간부를 제 2 링크암을 연결하여 구성한 것을 특징으로 한다.In addition, in the present invention, the connecting member is provided with a guide for guiding forward and backward of the acceleration arc contact, and the first link arm is hinged to the axial coupling portion formed on the guide while being rotatable to enable the first One end of the link arm is connected to the end of the second link member, and the third link arm is rotatably coupled to the coupling end formed at the outer side of the guide, and the operating end of the third link arm is connected to the acceleration arc contact point by the shackle. It is connected to the rear end of the, characterized in that the end of the first link arm and the intermediate portion of the third link arm is configured by connecting the second link arm.

또한, 본 발명에 있어, 상기 고정컨텍트의 선단측 내부에는 상기 제 1 링크부재 작동단의 직선운동을 안내 및 지지하는 가이드튜브가 형성된 것을 특징으로 한다.In the present invention, the guide tube for guiding and supporting the linear movement of the first link member operating end is formed inside the front end side of the fixed contact.

이하, 첨부된 도면 도 1 내지 도 4 를 참조하여 본 고안의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, a preferred embodiment of the present invention with reference to the accompanying drawings, Figures 1 to 4 as follows.

도면부호 1 은 가스차단기에 장착되면서 노즐(6)을 구비한 파퍼실린더를 나타내고, 상기 파퍼실린더(1)의 끝단부에는 가동아크접점(5)을 구비하고 있는 가동컨텍트(4)가 형성되며, 상기 파퍼실린더(1)의 내측으로는 가동아크접점(5)의 작동을 위한 작동로드(2)가 끼워져 삽입되어 있다.Reference numeral 1 denotes a pap cylinder equipped with a nozzle 6 while being mounted on the gas circuit breaker, and a movable contact 4 having a movable arc contact 5 is formed at an end of the pap cylinder 1, An actuating rod 2 for actuating the movable arc contact 5 is inserted into the pap cylinder 1.

그리고, 상기 파퍼실린더(1)에 대향하도록 고정컨텍트(8)가 형성되어 있으며, 상기 고정컨텍트(8)의 중심부로 일정길이의 가속아크접점(9)이 전후진 가능하게 삽입되어 있다.A fixed contact 8 is formed so as to face the pap cylinder 1, and a predetermined length of the acceleration arc contact 9 is inserted into the center of the fixed contact 8 so as to be able to move forward and backward.

즉, 상기 작동로드(2)의 동작에 의해 가동컨텍트(4)가 도면상의 상측으로 전진하게 되면 가동컨텍트(4)가 고정컨텍트(8)와 접촉되면서 가동아크접점(5)이 가속아크접점(9)과 전기적으로 접촉하게 되는 것이다.That is, when the movable contact 4 is advanced upward on the drawing by the operation of the operating rod 2, the movable contact 4 is in contact with the fixed contact 8 and the movable arc contact 5 is the acceleration arc contact ( And electrical contact with 9).

한편, 상기 노즐(6)의 단부에 제1 링크부재(7)를 형성하고, 이 제1 링크부재(7)로부터 가속아크접점(9)을 향하도록 일정길이의 제2 링크부재(10)를 연장 형성하며, 상기 제1 링크부재(7)의 작동단은 직선운동시 상기 고정컨텍트(8)의 선단측 내부에 형성되는 가이드튜브(19)에 의해 안내 및 지지되는 것이다.Meanwhile, a first link member 7 is formed at an end of the nozzle 6, and the second link member 10 having a predetermined length is directed from the first link member 7 toward the acceleration arc contact 9. It extends and the operating end of the first link member 7 is guided and supported by a guide tube 19 formed inside the tip side of the fixed contact 8 during linear movement.

그리고, 상기 제 2 링크부재(10)와 가속아크접점(9)의 후단부를 연결하는 연결체를 구성하여 노즐(6)의 후퇴(도면상의 하측)이 가속아크접점(9)이 신속하게 반대방향(도면상의 상측)으로 움직여 개극속도가 증대될 수 있도록 한다.Then, a connecting body connecting the second link member 10 and the rear end of the acceleration arc contact 9 is configured so that the retreat (lower side in the drawing) of the nozzle 6 is rapidly reversed in the opposite direction of the acceleration arc contact 9. Move to (upper side of drawing) to increase opening speed.

상기 연결체는 도면에 도시된 바와같이,As the connecting body is shown in the figure,

가속아크접점(9)의 전후진을 안내하는 가이드(12)를 구비하고, 상기 가이 드(12)상에 형성된 축결합부(14)에 제 1 링크암(11)을 힌지축(15) 결합하여 회동가능토록 하면서 상기 제 1 링크암(11)의 일측을 제 2 링크부재(10)의 끝단에 연결하며, The first link arm 11 is coupled to the hinge shaft 15 by the shaft coupling portion 14 formed on the guide 12, and has a guide 12 for guiding forward and backward movement of the acceleration arc contact 9. While connecting to one end of the first link arm 11 to the end of the second link member 10, so as to be rotatable,

상기 가이드(12)의 외곽에 형성된 결합단부(17)에 제 3 링크암(18)을 회전가능하게 결합하되, 상기 제 3 링크암(18)의 작동단이 샤클(13)에 의해 가속아크접점(9)의 후단부에 연결되도록 하고,The third link arm 18 is rotatably coupled to the coupling end portion 17 formed at the outer side of the guide 12, and the operating end of the third link arm 18 is accelerated by the shackle 13. To the rear end of (9),

상기 제 1 링크암(11)의 끝단과 제 3 링크암(18)의 중간부를 제 2 링크암(16)을 연결하여 구성한다.An end portion of the first link arm 11 and an intermediate portion of the third link arm 18 are formed by connecting the second link arm 16.

이와 같이 구성된 본 고안의 작용 및 효과를 설명하면 다음과 같다.Referring to the operation and effects of the present invention configured as described above are as follows.

도 1 은 가동아크접점(5)과 가속아크접점(9)이 서로 접촉된 상태를 나타내며, 이와 같은 상태에서 파퍼실린더(1)의 내측으로 끼워져 있는 작동로드(2)가 도면상의 하측으로 후퇴하면서 파퍼실린더(1), 가동컨텍트(4), 노즐(6)을 후퇴 작동시키게 되면, 상기 노즐(6)에 연결되어 있는 제 1 및 제 2 링크부재(7)(10)가 작동로드(2)와 동일한 방향으로 후퇴하게 된다.FIG. 1 shows a state in which the movable arc contact point 5 and the acceleration arc contact point 9 are in contact with each other. In this state, the actuating rod 2 fitted into the inside of the popper cylinder 1 retreats downward in the drawing. When the back cylinder (1), movable contact (4) and nozzle (6) are retracted, the first and second link members (7) (10) connected to the nozzle (6) actuate the rod (2). Retreat in the same direction as.

상기 제 2 링크부재(10)가 도면상의 하측방향으로 이동하게 되고, 이에의해 제 1 링크암(11)이 시계방향으로 회전하면서 제 2 링크부재(10)의 움직임에 추종하게되며, 상기 제 1 링크암(11)의 시계방향 회전에 의해 제 2 링크암(16)이 제 3 링크암(18)을 반시계방향으로 회전시키므로서, 제 3 링크암(18)에 의해 가속아크접점(9)이 노즐(6)의 후퇴방향에 대해 반대방향, 즉, 도면상의 상측으로 신속하게 움직이게되므로 도 2 와같이 가속아크접점(9)과 노즐(6)이 신속하게 개극상태로 전이 되는 것이다.The second link member 10 is moved downward in the drawing, whereby the first link arm 11 rotates clockwise to follow the movement of the second link member 10, the first As the second link arm 16 rotates the third link arm 18 counterclockwise by the clockwise rotation of the link arm 11, the acceleration arc contact 9 is caused by the third link arm 18. The acceleration arc contact 9 and the nozzle 6 are quickly transferred to the open state as shown in FIG. 2 because the nozzle 6 moves rapidly in the opposite direction to the retracting direction of the nozzle 6, that is, upwardly in the drawing.

이러한 동작에 의해 본 발명의 차단기는 종래 차단기에 비해 구동부의 변경없이 개극속도를 증가시키고, 차단부의 크기의 변경없이 행정거리 및 극간거리를 증가시킬 수 있게되는 것이며, 이는 고장전류차단 및 절연회복성능을 효율적으로 향상시켜 대용량 차단기의 컴팩트화를 가능하게 할 수 있게되는 것이다.By this operation, the breaker of the present invention can increase the opening speed without changing the driving part and increase the stroke distance and the inter-pole distance without changing the size of the breaker compared to the conventional breaker, which is a fault current blocking and insulation recovery performance. By efficiently improving the capacity of the circuit breaker can be made compact.

이상에서 설명한 바와같이 본 발명은 가동부의 노즐에 제1 링크부재, 제2 링크부재, 작동암 및 가이드로 가속아크접점과 연결하여 가동부 노즐이 후퇴시 작동암에 의해 가속아크접점이 반대방향으로 이중동작 하도록 구성한 것으로, 이를 통해 가스차단기의 차단성능과 밀접한 관계가 있는 개극속도를 증가시키고, 차단부 크기의 변경없이 고장전류 차단 및 절연회복성능을 향상시킬 수 있도록 한 이중동작 가스차단기를 제공하는 효과를 기대할 수 있다.As described above, the present invention is connected to the acceleration arc contact point by the first link member, the second link member, the actuating arm and the guide to the nozzle of the movable part, so that the acceleration arc contact is doubled in the opposite direction by the actuating arm when the movable part nozzle retracts. It is configured to operate, thereby increasing the opening speed which is closely related to the breaking performance of the gas circuit breaker, and providing a double-acting gas circuit breaker to improve the fault current blocking and insulation recovery performance without changing the size of the breaker. You can expect.

Claims (3)

노즐을 구비한 파퍼실린더의 일측 끝단에 가동아크접점을 구비한 가동컨텍트가 형성되고, 상기 파퍼실린더와 대향하도록 고정컨텍트가 형성되며, 상기 가동컨텍트를 전후진 작동시키기 위한 작동로드가 파퍼실린더 내측으로 삽입되어 있는 가스 차단기에 있어서,A movable contact having a movable arc contact is formed at one end of the popper cylinder having a nozzle, a fixed contact is formed to face the popper cylinder, and an actuating rod for moving the movable contact forwards and backwards into the popper cylinder. In the inserted gas breaker, 상기 고정컨텍트의 중심부로 전후진 가능하게 가속아크접점을 삽입하고, 상기 노즐 단부에 제 1 링크부재를 형성하며, 상기 제 1 링크부재에 가속아크접점의 후단부를 향하도록 일정길이의 제 2 링크부재를 연결하며, 일측이 상기 제 2 링크부재와 연결되고 타측이 상기 가속아크접점의 후단부에 연결되어 상기 노즐이 후퇴시 이와 반대방향으로 가속아크접점이 움직이도록 하는 연결체를 구성하되,A second link member having a predetermined length is inserted into the center of the fixed contact so as to move forward and backward, a first link member is formed at the nozzle end, and the first link member faces a rear end of the acceleration arc contact. And one side is connected to the second link member and the other side is connected to the rear end of the acceleration arc contact to configure a connecting body to move the acceleration arc contact in the opposite direction when the nozzle is retracted. 상기 연결체는 가속아크접점의 전후진을 안내하는 가이드를 구비하고, 상기 가이드상에 형성된 축결합부에 제 1 링크암을 힌지축 결합하여 회동가능토록 하면서 상기 제 1 링크암의 일측을 제 2 링크부재의 끝단에 연결하며, 상기 가이드의 외곽에 형성된 결합단부에 제 3 링크암을 회전가능하게 결합하되 상기 제 3 링크암의 작동단이 샤클에 의해 가속아크접점의 후단부에 연결되도록 하고, 상기 제 1 링크암의 끝단과 제 3 링크암의 중간부를 제 2 링크암을 연결하여 구성하는 것을 특징으로 하는 이중동작 가스차단기.The connecting member includes a guide for guiding forward and backward movement of the acceleration arc contact point, and the first link arm is hinged to the shaft coupling portion formed on the guide so as to be rotatable, so that one side of the first link arm is rotatable. It is connected to the end of the link member, and rotatably coupled to the third link arm to the coupling end formed on the outside of the guide so that the operating end of the third link arm is connected to the rear end of the acceleration arc contact by the shackle, And a second link arm connecting an end portion of the first link arm and an intermediate portion of the third link arm. 삭제delete 제 1 항에 있어서, 상기 고정컨텍트의 선단측 내부에는 상기 제 1 링크부재 작동단의 직선운동을 안내 및 지지하는 가이드튜브를 형성하는 것을 특징으로 하는 이중동작 가스차단기.The double-acting gas circuit breaker according to claim 1, wherein a guide tube is formed inside the front end of the fixed contact to guide and support the linear motion of the first link member operating end.
KR1020060053148A 2006-06-13 2006-06-13 Gas circuit breaker KR101022039B1 (en)

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KR100402234B1 (en) 2001-03-27 2003-10-17 한국전기연구원 Bidirectional operation type gas circuit breaker
KR20060063720A (en) * 2004-12-06 2006-06-12 가부시키가이샤 니혼 에이이 파워시스템즈 Method for breaking current in puffer-type gas circuit breaker and puffer-type gas circuit breaker using the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100402234B1 (en) 2001-03-27 2003-10-17 한국전기연구원 Bidirectional operation type gas circuit breaker
KR20060063720A (en) * 2004-12-06 2006-06-12 가부시키가이샤 니혼 에이이 파워시스템즈 Method for breaking current in puffer-type gas circuit breaker and puffer-type gas circuit breaker using the same

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