KR20030075833A - extinguishing device for gas insulation switch - Google Patents

extinguishing device for gas insulation switch Download PDF

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Publication number
KR20030075833A
KR20030075833A KR1020020015297A KR20020015297A KR20030075833A KR 20030075833 A KR20030075833 A KR 20030075833A KR 1020020015297 A KR1020020015297 A KR 1020020015297A KR 20020015297 A KR20020015297 A KR 20020015297A KR 20030075833 A KR20030075833 A KR 20030075833A
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KR
South Korea
Prior art keywords
compression cylinder
rack
contactor
movable
compression
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KR1020020015297A
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Korean (ko)
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KR100475066B1 (en
Inventor
강성모
최종웅
이종철
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엘지산전 주식회사
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Application filed by 엘지산전 주식회사 filed Critical 엘지산전 주식회사
Priority to KR10-2002-0015297A priority Critical patent/KR100475066B1/en
Priority to TW092105550A priority patent/TWI227033B/en
Priority to US10/387,572 priority patent/US6787725B2/en
Publication of KR20030075833A publication Critical patent/KR20030075833A/en
Application granted granted Critical
Publication of KR100475066B1 publication Critical patent/KR100475066B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices

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  • Circuit Breakers (AREA)

Abstract

PURPOSE: An arc extinction device of a gas insulated circuit breaker is provided to increase a compressing speed and a gas pressure of a compression room by moving a movable piston to an opposite direction to a compression cylinder. CONSTITUTION: An arc extinction device of a gas insulated circuit breaker includes a compression cylinder(4), a movable piston(10), the first rack(11), the second rack(12), a pinion gear(13), a movable arc contactor(7), a nozzle(8), and a connection rod(9). The compression cylinder(4) is installed within a fixing contactor(3). The movable piston(10) is installed within the compression cylinder(4) in order to form a compression room(6). The first rack(11) is installed at a rod of the compression cylinder(4). The second rack(12) is installed at the movable piston(10). The pinion gear(13) is installed between the first rack(11) and the second rack(12). The movable arc contactor(7) is connected to a fixing arc contactor(2) according to the movement of the compression cylinder(4). The nozzle(8) is fixed to the compression cylinder(4). The connection rod(9) is used for connecting the rod of the compression cylinder(4) to an operator.

Description

가스절연 차단기의 소호장치{extinguishing device for gas insulation switch}Extinguishing device for gas insulation switch

본 발명은 가스절연 차단기 또는 가스절연 개폐장치에서 전류가 차단될 때 발생하는 아크를 소호시키기 위한 장치에 관한 것으로, 특히 차단기의 트립(Trip) 작동시 압축실의 압력상승 효율을 높혀 차단성능이 향상될 수 있도록 한 것이다.The present invention relates to a device for extinguishing arcs generated when a current is interrupted in a gas insulated circuit breaker or gas insulated switchgear, and particularly, improves the breaking performance by increasing the pressure rise efficiency of the compression chamber during the trip operation of the circuit breaker. It would be possible.

가스절연 개폐장치나 가스절연 차단기는 전기선로상에 설치되어 정상적인 사용상태에서 인위적으로 선로를 개폐할 때 또는 선로의 지락이나 단락 등 사고전류가 발생하였을 때 전류를 안전하게 차단하여 전력계통 및 부하기기를 보호하는 전기기기로서, 이와같은 가스절연 차단기에서는 차단기가 트립작동을 할 때 압축실에서 압축된 절연력이 우수한 소호가스를 노즐을 통해 분사시켜 트립작동시 발생하는 아크를 소호시켜주게 된다.The gas insulated switchgear or gas insulated breaker is installed on the electric line to safely cut off the current in case of artificially opening or closing the line in normal use or in case of accident current such as ground fault or short circuit. As a protective electric device, such a gas insulated circuit breaker extinguishes arcs generated during a trip operation by injecting an arc extinguished gas having excellent insulation force in the compression chamber through a nozzle when the breaker trips.

도 1과 도 2는 종래 가스절연 차단기의 소호장치를 나타낸 구성도로서, 소호장치는 고정측과 가동측으로 이루어져 있다.1 and 2 is a configuration diagram showing a conventional arc insulation breaker of the circuit breaker, the arc extinguishing device is composed of a fixed side and a movable side.

고정측은 고정접촉자(1)와 고정 아크접촉자(2)로 구성된다.The fixed side is composed of a fixed contactor 1 and a fixed arc contactor 2.

가동측은 고정접촉자(3)와, 상기 고정접촉자내에 이동가능하게 설치된 압축실린더(4)와, 상기 압축실린더내에 설치되어 압축실(6)을 형성하는 고정피스턴(5)과, 상기 압축실린더의 이동에 따라 함께 이동하면서 고정 아크접촉자에 접속하거나 이탈하는 가동 아크접촉자(7)와, 상기 압축실린더에 고정된 노즐(8)과, 상기 압축실린더의 로드를 차단기의 조작기에 연결하는 조작기 연결로드(9)로 구성되어 있다.The movable side includes a fixed contactor 3, a compression cylinder 4 movably installed in the fixed contactor, a fixed piston 5 provided in the compression cylinder to form a compression chamber 6, and movement of the compression cylinder. Movable arc contactor 7 for connecting to or leaving the fixed arc contactor while moving together according to the present invention, a nozzle 8 fixed to the compression cylinder, and a manipulator connecting rod 9 for connecting the rod of the compression cylinder to the manipulator of the breaker. It consists of).

상기와 같은 장치는 차단기의 정상적인 통전 상태에서는 도 1과 같이 가동 아크접촉자(7)가 고정 아크접촉자(2)에 접속되어 선로는 폐로상태를 유지하게된다.In such a device, in the normal energized state of the circuit breaker, as shown in FIG. 1, the movable arc contactor 7 is connected to the fixed arc contactor 2 to maintain the closed state.

상기와 같은 상태에서 차단기가 트립되면 조작기와 연결된 조작기 연결로드(9)에 도면상 우측방향(개로방향)으로 힘이 전달되어 고속의 트립동작이 시작되고 로드에 의해 조작기 연결로드(9)와 연결된 압축실린더(4) 및 가동 아크접촉자(7)가 조작기 연결로드(9)의 이동방향으로 함께 이동하게 된다.When the breaker trips in the above state, a force is transmitted to the manipulator connecting rod 9 connected to the manipulator in the right direction (opening direction) in the drawing to start a high speed trip operation and is connected to the manipulator connecting rod 9 by the rod. The compression cylinder 4 and the movable arc contactor 7 are moved together in the direction of movement of the manipulator connecting rod 9.

이때 압축실린더(4)와 고정피스턴(5)에 의해 형성된 압축실(6)의 용적은 압축실린더(4)의 이동에 따라 급속히 줄어들게 되고 압축실린더(4)의 이동에 의해 가동 아크접촉자(7)가 고정 아크접촉자(2)에서 분리되는 순간부터 가동 아크접촉자(7)와 고정 아크접촉자(2) 사이에서 아크가 발생하게 되는데, 상기와 같이 아크가 발생할 때 도 2와 같이 압축실(6)내에 압축되어 있던 압축가스가 노즐(8)을 통해 아크방향으로 분사되므로 아크가 소호되고 전류는 차단되는 것이다.At this time, the volume of the compression chamber 6 formed by the compression cylinder 4 and the fixed piston 5 is rapidly reduced with the movement of the compression cylinder 4 and the movable arc contactor 7 by the movement of the compression cylinder 4. Is generated between the movable arc contactor 7 and the fixed arc contactor 2 from the moment when is separated from the fixed arc contactor 2, when the arc occurs as described above in the compression chamber 6 as shown in FIG. Since the compressed gas that has been compressed is injected in the arc direction through the nozzle 8, the arc is extinguished and the current is interrupted.

상기와 같은 차단기에서 높은 에너지의 아크를 신속하게 소호하여 차단기의 성능을 향상시키기 위해서는 트립속도인 조작기 연결로드(9)의 이동속도를 향상시켜 압축실내의 가스압력을 증대시켜 주어야 한다.In order to improve the performance of the circuit breaker by rapidly extinguishing arcs of high energy in the circuit breaker as described above, it is necessary to increase the gas pressure in the compression chamber by improving the moving speed of the manipulator connecting rod 9 which is the trip speed.

즉, 종래 차단기에서는 조작기의 출력을 증대시키는 방법에 의해 조작기 연결로드(9)의 이동속도를 향상시키고 이에따라 압축실내의 가스압력이 증대되도록 하였으나 상기와 같이 조작기의 출력을 증가시키는 경우 부품의 대형화가 요구되어 장치가 커지고 제조비용이 증가하는 문제가 있다.That is, in the conventional circuit breaker, the moving speed of the manipulator connecting rod 9 is improved by the method of increasing the output of the manipulator, and accordingly, the gas pressure in the compression chamber is increased accordingly. There is a problem that the device is large and the manufacturing cost is increased.

본 발명의 목적은 차단기의 트립작동시 압축실린더와 고정피스턴이 서로 반대방향으로 동시에 이동되게 함으로서 조작기의 출력을 증대시키지 않고도 압축실의 압력을 효과적으로 증대시킬 수 있는 장치를 제공하기 위한 것이다.An object of the present invention is to provide a device that can effectively increase the pressure of the compression chamber without increasing the output of the manipulator by causing the compression cylinder and the fixed piston to move simultaneously in opposite directions during the trip operation of the breaker.

상기와 같은 목적을 달성하기 위한 본 발명의 실시예에 따라 고정접촉자내에 이동가능하게 설치된 압축실린더와, 상기 압축실린더내에 설치되어 압축실린더와의 사이에 압축실을 형성하는 가동피스턴과, 상기 압축실린더의 로드에 설치된 랙과, 상기 가동피스턴에 설치된 랙과, 상기 각 랙 사이에 설치되어 압축실린더의 이동시 가동피스턴을 반대방향으로 이동시키는 피니언 기어와, 상기 압축실린더의 이동에 따라 함께 이동하면서 고정 아크접촉자에 접속하거나 이탈하는 가동 아크접촉자와, 상기 압축실린더에 고정된 노즐과, 상기 압축실린더의 로드를 차단기의 조작기에 연결하는 조작기 연결로드로 구성된 가스절연 차단기의 소호장치가 제공된다.According to an embodiment of the present invention for achieving the above object and a movable cylinder installed in the fixed contactor, the movable piston is installed in the compression cylinder and forming a compression chamber between the compression cylinder, the compression cylinder A rack installed at a rod of the rod, a rack installed at the movable piston, and a pinion gear installed between each rack to move the movable piston in the opposite direction when the compression cylinder is moved, and a fixed arc while moving together in accordance with the movement of the compression cylinder. A fire protection device for a gas insulated circuit breaker is provided which comprises a movable arc contactor for connecting to or leaving a contactor, a nozzle fixed to the compression cylinder, and a manipulator connecting rod for connecting the rod of the compression cylinder to the manipulator of the breaker.

도 1과 도 2는 종래 장치를 나타낸 단면도로서1 and 2 are cross-sectional views showing a conventional device

도 1은 선로가 통전중인 상태도1 is a state diagram in which the track is energized

도 2는 차단기가 트립되는 상태도2 is a state in which the breaker trips

도 3 내지 도 도 5는 본 발명을 나타낸 단면도로서3 to 5 are cross-sectional views showing the present invention.

도 3은 선로가 통전중인 상태도3 is a state diagram in which the track is energized

도 4는 차단기가 트립되는 상태도4 is a state in which the breaker trips

도 5는 선로가 차단된 개로 상태도5 is an open state diagram of a blocked line

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

2 : 고정 아크접촉자 4 : 압축실린더2: fixed arc contact 4: compression cylinder

6 : 압축실 7 : 가동 아크접촉자6: compression chamber 7: movable arc contactor

8 : 노즐 10 : 가동피스턴8: nozzle 10: movable piston

11, 12 : 랙 13 : 피니언 기어11, 12: rack 13: pinion gear

도 3 내지 도 5는 본 발명에 따른 아크 소호장치를 나타낸 단면도이다.3 to 5 are cross-sectional views showing the arc extinguishing device according to the present invention.

고정측은 고정접촉자(1)와 고정 아크접촉자(2)로 구성된다.The fixed side is composed of a fixed contactor 1 and a fixed arc contactor 2.

가동측은 고정접촉자(3)와, 상기 고정접촉자내에 이동가능하게 설치된 압축실린더(4)와, 상기 압축실린더내에 설치되어 압축실린더와의 사이에 압축실(6)을 형성하는 가동피스턴(10)과, 상기 압축실린더의 이동에 따라 함께 이동하면서 고정 아크접촉자에 접속하거나 이탈하는 가동 아크접촉자(7)와, 상기 압축실린더에 고정된 노즐(8)과, 상기 압축실린더의 로드(4a)를 차단기의 조작기에 연결하는 조작기 연결로드(9)로 구성되어 있다.The movable side includes a movable piston (10) for forming a compression chamber (6) between the fixed contactor (3), a compression cylinder (4) movably mounted in the fixed contactor, and a compression cylinder (6) provided in the compression cylinder; And a movable arc contactor 7 which connects to or leaves the fixed arc contactor while moving together with the compression cylinder, the nozzle 8 fixed to the compression cylinder, and the rod 4a of the compression cylinder. It consists of a manipulator connecting rod 9 for connecting to a manipulator.

상기 압축실린더(4)의 로드(4a)에는 랙(11)이 설치되어 있고 가동피스턴(10)에도 랙(12)이 설치되어 있으며, 상기 각 랙(11)(12) 사이에는 피니언 기어(13)가 설치되어 각 랙과 맞물려 있다.A rack 11 is installed on the rod 4a of the compression cylinder 4, and a rack 12 is also installed on the movable piston 10, and the pinion gear 13 is disposed between the racks 11 and 12. ) Are installed and engaged with each rack.

상기와 같이 구성된 본 발명은 차단기의 정상운전 상태에서는 도 3과 같이 가동 아크접촉자(7)가 고정 아크접촉자(2)와 접속하여 폐로상태를 유지하게 된다.In the present invention configured as described above, the movable arc contactor 7 is connected to the fixed arc contactor 2 to maintain the closed state as shown in FIG. 3 in the normal operation state of the breaker.

상기와 같은 상태에서 차단기가 트립되면 조작기와 연결된 조작기 연결로드(9)에 도면상 우측방향(개로방향)으로 힘이 전달되어 고속의 트립동작이 시작되고 도 4와 같이 로드(4a)에 의해 조작기 연결로드(9)와 연결된 압축실린더(4) 및 가동 아크접촉자(7)가 조작기 연결로드(9)의 이동방향으로 함께 이동하게 된다.When the breaker trips in the above state, a force is transmitted to the manipulator connecting rod 9 connected to the manipulator in the right direction (opening direction) in the drawing to start a high speed trip operation, and the manipulator is operated by the rod 4a as shown in FIG. 4. The compression cylinder 4 and the movable arc contactor 7 connected to the connecting rod 9 are moved together in the moving direction of the manipulator connecting rod 9.

한편 압축실린더(4)의 이동에 의해 도 4와 같이 가동 아크접촉자(7)가 고정 아크접촉자(2)에서 분리되면 그 순간부터 가동 아크접촉자(7)와 고정 아크접촉자(2) 사이에서 아크가 발생하게 되고 이때 압축실(6)내의 압축가스가 노즐(8)을 통해 분사되어 아크를 소호시킴과 동시에 전류를 차단하게 되는데, 본 발명에서는 압축실린더(4)의 로드(4a)와 가동피스턴(5)에 각각 랙(11)(12)이 설치되어 있고 그 사이에 피니언 기어(13)가 설치되어 이들 랙(11)(12)과 맞물려 있으므로 로드(4a)가 조작기 연결로드(9)를 따라 도면상 우측방향으로 이동할 때 가동피스턴(10)은 로드(4a)의 이동방향과 반대방향인 도면상 좌측방향으로 이동하게 되는 것이다.On the other hand, when the movable arc contactor 7 is separated from the fixed arc contactor 2 as shown in FIG. 4 by the movement of the compression cylinder 4, the arc is moved between the movable arc contactor 7 and the fixed arc contactor 2 from that moment. At this time, the compressed gas in the compression chamber 6 is injected through the nozzle 8 to extinguish the arc and cut off the current. In the present invention, the rod 4a of the compression cylinder 4 and the movable piston ( The racks 11 and 12 are respectively installed in 5), and pinion gears 13 are installed therebetween so as to engage with these racks 11 and 12, so that the rods 4a follow the manipulator connecting rod 9. When moving in the right direction on the drawing movable piston 10 is to move in the left direction on the drawing in the direction opposite to the moving direction of the rod (4a).

즉, 압축실린더(4)의 로드(4a)가 우측방향으로 이동하면 랙(11)과 맞물려 있는 피니언 기어(13)가 도면상 시계방향의 회전을 하게 되고 이러한 피니언 기어(13)의 회전에 따라 랙(12)과 가동피스턴(10)은 좌측방향으로 이동을 하게되는 것이다.That is, when the rod 4a of the compression cylinder 4 moves to the right direction, the pinion gear 13 meshed with the rack 11 rotates clockwise in the drawing and according to the rotation of the pinion gear 13. The rack 12 and the movable piston 10 are to move in the left direction.

따라서 트립작동시 압축실린더(4)만 이동하던 종래 장치와는 달리 압축실린더(4)와 가동피스턴(10)이 서로 반대방향으로 이동하여 압축실(6)의 압축속도를 2배로 증가시킬 수 있게 된다.Therefore, unlike the conventional apparatus in which only the compression cylinder 4 moves during the trip operation, the compression cylinder 4 and the movable piston 10 can move in opposite directions to double the compression speed of the compression chamber 6. do.

또한 차단기의 동작이 완료되면 도 5와 같이 압축실린더(4)는 최대한 우측으로, 가동피스턴(10)은 최대한 좌측으로 이동하여 있게되며, 이러한 상태에서 차단기를 투입하면 압축실린더(4)가 좌측으로 이동함과 동시에 가동피스턴(10)이 우측으로 이동하여 도 3과 같은 상태로 환원된다.In addition, when the operation of the circuit breaker is completed, as shown in FIG. 5, the compression cylinder 4 moves to the right as much as possible, and the movable piston 10 moves to the left as far as possible. In this state, the compression cylinder 4 moves to the left. Simultaneously with movement, the movable piston 10 moves to the right side and is reduced to a state as shown in FIG. 3.

상기와 같이 본 발명은 차단기의 트립동작에 의해 압축실린더가 이동할 때 압축실린더내에 설치된 가동피스턴이 압축실린더의 이동속도와 같은 속도로 압축실린더의 이동방향에 대해 반대방향으로 이동하도록 되어 있으므로 압축실의 압축 속도가 2배로 빨라지고 가스압력은 월등히 증대된다.As described above, in the present invention, when the compression cylinder is moved by the tripping operation of the breaker, the movable piston installed in the compression cylinder is moved in the opposite direction to the moving direction of the compression cylinder at the same speed as that of the compression cylinder. The compression speed is doubled and the gas pressure is greatly increased.

따라서 조작기의 출력을 크게하지 않고도 필요한 압력상승을 얻어 아크를 효과적으로 소호시킬 수 있게 된다.Therefore, it is possible to effectively extinguish the arc by obtaining the required pressure rise without increasing the output of the manipulator.

Claims (1)

고정접촉자내에 이동가능하게 설치된 압축실린더와, 상기 압축실린더내에 설치되어 압축실린더와의 사이에 압축실을 형성하는 가동피스턴과, 상기 압축실린더의 로드에 설치된 랙과, 상기 가동피스턴에 설치된 랙과, 상기 각 랙 사이에 설치되어 압축실린더의 이동시 가동피스턴을 반대방향으로 이동시키는 피니언 기어와, 상기 압축실린더의 이동에 따라 함께 이동하면서 고정 아크접촉자에 접속하거나 이탈하는 가동 아크접촉자와, 상기 압축실린더에 고정된 노즐과, 상기 압축실린더의 로드를 차단기의 조작기에 연결하는 조작기 연결로드로 구성된 것을 특징으로 하는 가스절연 차단기의 소호장치.A compression cylinder movably installed in the fixed contactor, a movable piston installed in the compression cylinder to form a compression chamber between the compression cylinder, a rack provided on the rod of the compression cylinder, a rack installed on the movable piston, A pinion gear installed between the racks to move the movable piston in the opposite direction when the compression cylinder is moved, a movable arc contactor which connects to or leaves the fixed arc contactor while moving together in accordance with the movement of the compression cylinder, and the compression cylinder. And a manipulator connecting rod connecting the fixed nozzle and the rod of the compression cylinder to the manipulator of the breaker.
KR10-2002-0015297A 2002-03-21 2002-03-21 extinguishing device for gas insulation switch KR100475066B1 (en)

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KR10-2002-0015297A KR100475066B1 (en) 2002-03-21 2002-03-21 extinguishing device for gas insulation switch
TW092105550A TWI227033B (en) 2002-03-21 2003-03-14 Switching mechanism of circuit breaker for gas insulated switchgear
US10/387,572 US6787725B2 (en) 2002-03-21 2003-03-14 Switching mechanism of circuit breaker for gas insulted switchgear

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101241356B1 (en) * 2008-09-18 2013-03-08 현대중공업 주식회사 Safety valve device of Puffer cylinder for gas circuit breaker
RU2514732C2 (en) * 2011-04-27 2014-05-10 ЭлЭсАйЭс КО., ЛТД. Switching mechanism for distribution device with sf6 gas insulation
CN104282484A (en) * 2013-07-02 2015-01-14 Ls产电株式会社 High voltage gas circuit breaker
CN112635230A (en) * 2020-10-21 2021-04-09 平高集团有限公司 Circuit breaker and double-acting arc extinguishing chamber

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100344281B1 (en) * 2000-08-31 2002-07-24 한국전기연구원 Bidirectional operation type gas circuit breaker

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101241356B1 (en) * 2008-09-18 2013-03-08 현대중공업 주식회사 Safety valve device of Puffer cylinder for gas circuit breaker
RU2514732C2 (en) * 2011-04-27 2014-05-10 ЭлЭсАйЭс КО., ЛТД. Switching mechanism for distribution device with sf6 gas insulation
US8822869B2 (en) 2011-04-27 2014-09-02 Lsis Co., Ltd. Switching mechanism for gas insulated switchgear
CN104282484A (en) * 2013-07-02 2015-01-14 Ls产电株式会社 High voltage gas circuit breaker
CN112635230A (en) * 2020-10-21 2021-04-09 平高集团有限公司 Circuit breaker and double-acting arc extinguishing chamber

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