KR200357843Y1 - SF6 Gas Insulated Shut Off Valve - Google Patents

SF6 Gas Insulated Shut Off Valve Download PDF

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Publication number
KR200357843Y1
KR200357843Y1 KR20-2004-0013786U KR20040013786U KR200357843Y1 KR 200357843 Y1 KR200357843 Y1 KR 200357843Y1 KR 20040013786 U KR20040013786 U KR 20040013786U KR 200357843 Y1 KR200357843 Y1 KR 200357843Y1
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KR
South Korea
Prior art keywords
gas
valve
bellows
distribution
type holder
Prior art date
Application number
KR20-2004-0013786U
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Korean (ko)
Inventor
이종철
함태현
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케이.비.(주)
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Priority to KR20-2004-0013786U priority Critical patent/KR200357843Y1/en
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Publication of KR200357843Y1 publication Critical patent/KR200357843Y1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
    • F16K1/04—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3268—Mounting of sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00—Spindle sealings
    • F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

본 고안은 한국전력과 같은 변전소에서 널리 사용하는 가스절연 스위치 기어장치에 사용되는 밸브로서 전력의 송배전시 발생될 수 있는 안전사고를 최소화 할 수 있는 중요한 배전반 안전장치용 밸브이다. 이러한 스위치 기어장치에는 SF6 절연가스를 사용하는데 가스 누출시에는 시스템의 절연성을 떨어뜨려 송배전의 안전성은 물론 환경파괴라는 큰 문제점을 야기한다. 즉, 송배전 선로의 개폐장치는 정상상태에서 선로의 개폐뿐만 아니라 송배전 사고시의 단락, 지락 등 이상 상태에서도 선로를 안전하게 개폐하여 송배선 계통을 보호하는 중요한 역할을 하게 된다.The present invention is a valve used in gas insulated switchgear devices widely used in substations such as KEPCO. It is an important switchboard safety valve for minimizing safety accidents that may occur during transmission and distribution of electric power. SF6 insulated gas is used for the switchgear device. When the gas leaks, the insulation of the system is degraded, which causes a big problem such as safety of transmission and distribution as well as environmental destruction. In other words, the switchgear of the transmission and distribution line plays an important role in protecting the transmission and distribution system by safely opening and closing the line even in abnormal conditions such as short circuit and ground fault during transmission and distribution accident as well as opening and closing of the line in a normal state.

본 고안은 기존의 SF6 절연가스 누출 방지를 벨로우즈관(8a)의 밀봉에 의지하는 구조에서 플랜지의 일정부분에 O-링(12)을 삽입함으로써 플랜지의 틈새를 통해 관에 들어갈 수 있는 가스를 1차 차단함과 동시에 일부 잔존 가스를 벨로우즈관(8a)으로 완전 실링하는 방법을 채택하였으므로 가스 누출에 대한 안정성을 보다 확실히 신뢰할 수 있도록 고안되었다.The present invention inserts an O-ring (12) into a certain portion of the flange in a structure that relies on the sealing of the bellows pipe (8a) to prevent leakage of existing SF6 insulating gas. As a result of adopting a method of completely sealing off some residual gas to the bellows pipe 8a at the same time as blocking the car, it is designed to more reliably guarantee the stability against gas leakage.

Description

에스에프6 절연가스 차단밸브{SF6 Gas Insulated Shut Off Valve}SF6 Gas Insulated Shut Off Valve

본 고안은 에스에프6(SF6) 절연가스 차단밸브에 관한 것으로서, 더욱 상세히는 한국전력과 같은 변전소에서 널리 사용하는 가스절연 스위치 기어장치에 사용되는 밸브로서 전력의 송배전시 발생될 수 있는 안전사고를 최소화 할 수 있는 중요한 배전반 안전장치용 SF6 절연가스 차단밸브를 제공코자 하는 것이다.The present invention relates to an SF6 insulated gas shutoff valve, and more particularly, a valve used in a gas insulated switchgear device widely used in a substation such as KEPCO, and minimizes safety accidents that may occur during transmission and distribution of electric power. To provide an important SF6 insulated gas shutoff valve for switchboard safety devices.

가스절연 개폐장치의 저장탱크에는 가스를 안전하게 차단하기 위한 가스차단밸브가 장착되며, 상기 가스차단밸브는 저장탱크에 대한 밀봉성이 우수해야 가스저장탱크의 절연성을 보장할 수 있으므로 저장탱크의 밀봉이 잘 되어야 하고, 저장탱크의 내압이 증가되어 저장탱크의 안전성에 문제가 발생할 경우는 절연가스를 외부로 방출할 수 있어야 한다.The storage tank of the gas insulated switchgear is equipped with a gas shutoff valve to safely shut off the gas, and the gas shutoff valve must be excellently sealed to the storage tank to ensure insulation of the gas storage tank, so that the sealing of the storage tank is It should be well, and if the internal pressure of the storage tank is increased and the safety of the storage tank is a problem, it should be able to release the insulating gas to the outside.

따라서, 가스절연 스위치 기어장치의 저장탱크에는 가스를 안전하게 차단하기 위한 가스차단 밸브가 장착되는데 이러한 목적으로 사용하는 도 1의 SF6 절연가스 차단밸브는 저장탱크에 대한 밀봉성이 대단히 우수하여 가스의 누출을 완벽하게차단해야 한다.Therefore, the gas storage valve of the gas insulated switchgear device is equipped with a gas shutoff valve to safely shut off the gas. The SF6 insulated gas shutoff valve of FIG. Should be completely blocked.

이것은 SF6 절연가스 차단밸브의 밀봉성을 확보하기 위한 밸브시트의 밀봉설계와 벨로우즈와 같은 최적의 가압장치 설계가 최적화되어야 가능하다.This is possible only if the seal design of the valve seat and the optimum pressurization device design such as bellows are optimized to ensure the sealability of the SF6 insulated gas shutoff valve.

한편, 기존의 SF6 절연가스 차단밸브의 경우 밸브의 개폐조작 시 벨로우즈의 비틀림을 방지하기 위하여 하부밀봉덮개 내부를 사각 단면으로 가공한 후 고정 하였는데, 이러한 구조의 경우 벨로우즈관 내부로 가스가 침투할 수 있는 틈새가 발생하게 되어 완벽한 밀봉을 행하기 어려운 문제점이 있었던 것이다.Meanwhile, in the case of the conventional SF6 insulated gas shutoff valve, the inside of the bottom sealing cover was machined into a rectangular cross section and fixed in order to prevent the bellows twisting during opening / closing operation of the valve. There was a problem that the gap is difficult to perform a perfect seal.

이에 본 고안에서는 종래 평판식 소프트 실링에만 의존해 오던 SF6 절연가스 차단밸브가 갖는 제반 문제점을 해결할 수 있는 SF6 절연가스 차단밸브를 제공코자 하는 것으로서,Accordingly, the present invention is to provide an SF6 insulated gas shutoff valve that can solve all the problems of the SF6 insulated gas shutoff valve, which has been dependent only on the conventional flat soft sealing.

본 고안에서는 SF6 절연가스를 완벽하게 차단하기 위한 새로운 밀봉 메카니즘과 내마멸 소재의 채택으로 가스절연 스위치 기어장치의 송배전 성능을 안정적으로 확보할 수 있도록 하여 송배전 시스템의 안전성을 확보토록 하며,In this invention, the new sealing mechanism and the wear-resistant material to completely block the SF6 insulation gas ensure the transmission and distribution performance of the gas insulated switchgear device to ensure the safety of the transmission and distribution system.

SF6 절연가스 차단밸브에서 밀봉성을 확보하기 위한 폴리머 소재를 사용한 디스크 실링과 메탈시트는 정밀하게 가공되어야 하고, 일정한 내구성을 갖추어야 반복적인 사용이 가능하므로 본 고안은 SF6 절연가스 차단밸브에 있어서 2중 밀봉 메카니즘을 제공하고, 밀봉 밸브시트가 디스크 내에 삽입되도록 구성하여 제작공정의 단순화를 통한 제작 코스트를 절감토록 하며, 또한 디스크와 중심축의 얼라인먼트를 단순하게 설계하고, 플랜지 내부 사각단면을 원형으로 가공함으로써 O-링에 의한 실링이 가능하여 벨로우즈관 내로 침투하기 쉬운 틈새를 없앴으며, 정밀한 가압력의 최적화를 통해 SF6 절연가스 차단밸브의 밀봉 안전성과 내구성을 극대화 한 SF6 절연가스 차단밸브를 제공함에 고안의 기술적 과제를 두고 본 고안을 완성한 것이다.Disc sealing and metal seat using polymer material to secure sealing in SF6 insulated gas shutoff valve must be precisely processed and can be used repeatedly if it has a certain durability. By providing a sealing mechanism, the sealing valve seat is inserted into the disc to reduce the manufacturing cost through the simplification of the manufacturing process, and also by simply designing the alignment of the disc and the central axis, and by processing the square cross section inside the flange in a circle It is possible to seal by O-ring, eliminating the gap that is easy to penetrate into bellows pipe, and to provide SF6 insulated gas shutoff valve that maximizes sealing safety and durability of SF6 insulated gas shutoff valve by optimizing precise pressing force. The present invention was completed with the task.

도 1은 종래 SF6 절연가스 차단밸브의 구성을 보인 단면도1 is a cross-sectional view showing the configuration of a conventional SF6 insulated gas shutoff valve

도 2는 본 고안의 바람직한 실시예를 보인 단면도2 is a cross-sectional view showing a preferred embodiment of the present invention

도 3은 본 고안에 있어서 벨로우즈형 홀더를 발췌한 반단면도Figure 3 is a half cross-sectional view of the bellows-type holder in the present invention

도 4는 본 고안에 있어서 벨로우즈형 홀더를 발췌한 일부 파절상태의 분해Figure 4 is an exploded partial fractured state of the bellows type holder in the present invention

사시도Perspective view

■ 도면의 주요부분에 사용된 부호의 설명 ■■ Explanation of symbols used in main part of drawing ■

1: (SF6 절연가스)차단밸브 2: 가스경유공1: (SF6 insulated gas) shutoff valve 2: gas via hole

3: 밸브몸체 4: 밸브덮개3: valve body 4: valve cover

4a: 직선부 5: 핸들4a: straight portion 5: handle

6: 고정너트 7: 스템6: fixing nut 7: stem

8: 벨로우즈형 홀더 8a: 벨로우즈관8: bellows holder 8a: bellows tube

8b: 밀봉축 8c: 플렌지부8b: sealing shaft 8c: flange portion

8d: 직선부 9: 밸브시트8d: straight portion 9: valve seat

10: 디스크 10a: 결합요홈10: disk 10a: coupling groove

11: 하부밀봉덮개 12: O-링11: bottom seal 12: O-ring

13: 고정볼트13: Fixing bolt

이하 본 고안에서 제공에서 SF6 절연가스 차단밸브(1)를 첨부 도면과 함께 설명키로 한다.Hereinafter, the SF6 insulation gas shutoff valve 1 will be described with reference to the accompanying drawings.

도 2는 본 고안의 바람직한 일실시예를 보인 단면 구성도이고, 도 3은 벨로우즈형 홀더의 상세구성을 보인 반단면도, 도 4는 상기 벨로우즈형 홀더의 일부 파절 상태의 사시도로서,Figure 2 is a cross-sectional view showing a preferred embodiment of the present invention, Figure 3 is a half cross-sectional view showing a detailed configuration of the bellows-type holder, Figure 4 is a perspective view of a partially broken state of the bellows-type holder,

본 고안의 SF6 절연가스 차단밸브(1)는 가스경유공(2)을 가지는 밸브몸체(3)와, 상기 밸브몸체(3)의 상부에 나사결합되는 밸브덮개(4)의 내부에는 상부 핸들(5)과 고정너트(6)로 연결되며 하부가 스템(7)과 나사결합되는 벨로우즈형 홀더(8)로 이루어지며, 상기 벨로우즈형 홀더(8)의 하부에 밸브시트(9)가 결합된 디스크(10)가 고정되어 가스경유공(2)을 핸들(5)의 조작에 따라 개폐할 수 있도록 구성되며, 상기 벨로우즈형 홀더(8)의 하부에는 하부밀봉덮개(11)가 나사결합된 통상의 차단밸브(1)에 있어서;The SF6 insulated gas shutoff valve 1 of the present invention has a valve body 3 having a gas passage hole 2 and an upper handle inside the valve cover 4 screwed to an upper portion of the valve body 3. 5) and a bellows-type holder (8) which is connected to the fixing nut (6) and has a lower part screwed to the stem (7), and a disk having a valve seat (9) coupled to the lower part of the bellows-type holder (8). 10 is fixed and configured to open and close the gas via hole (2) according to the operation of the handle (5), the lower sealing cover 11 is screwed in the lower portion of the bellows-type holder (8) In the shut-off valve 1;

상기 벨로우즈형 홀더(8)의 하부에 결합되는 하부밀봉덮개(11)와 벨로우즈형홀더(8)를 구성하는 벨로우즈관(8a), 밀봉축(8b)을 상호 용접하여 일체가 될 수 있도록 구성한다.The lower sealing cover 11 coupled to the lower portion of the bellows-type holder 8 and the bellows tube 8a and the sealing shaft 8b constituting the bellows-type holder 8 are welded to each other to be integrated. .

이는 차단밸브(1)를 개폐작동 시 벨로우즈관(8a)으로 SF6 절연가스가 침투되어도 대기로 누수되는 것을 방지하기 위한 것이며, 이곳에서 완벽하게 실링이 이루어져야 하기 때문이다.This is to prevent leakage to the atmosphere even if SF6 insulating gas penetrates into the bellows pipe (8a) when opening and closing the shut-off valve (1), because the sealing must be made completely here.

상기 하부밀봉덮개(11)는 원형으로 가공되어 벨로우즈관(8a)의 압축시 원활하게 슬라이딩 작동이 이루어질 수 있도록 하였으며, 밀봉축(8b)과 하부밀봉덮개(11) 사이에는 O-링(12)을 삽입 개재시켜 1차 실링이 보강될 수 있도록 한다.The lower sealing cover 11 is processed in a circular shape to allow a smooth sliding operation when the bellows pipe 8a is compressed, and an O-ring 12 between the sealing shaft 8b and the lower sealing cover 11. Intervention is inserted so that the primary seal can be reinforced.

그리고 가스압력에 의한 비틀림을 보완하기 위하여 벨로우즈형 홀더(8)의 원형 플렌지부(8c)의 좌우측을 직선부(8d)로 가공한 2각 단면구조로 단조 가공하여 밸브덮개(4)의 내부에 대응 형성되는 직선부(4a)와 대응 결합토록 함으로써, 벨로우즈관(8a)의 이탈을 방지토록 하며, 가공 및 조립도 원활하게 이루어질 수 있도록 구성한다.In order to compensate for the torsion caused by the gas pressure, the left and right sides of the circular flange portion 8c of the bellows-type holder 8 are forged into a two-sided cross-sectional structure processed by the straight portion 8d, and the inside of the valve cover 4 By correspondingly engaging with the corresponding straight portion 4a to be formed, to prevent the separation of the bellows pipe (8a), it is configured to be smoothly processed and assembled.

또한 차단밸브(1)의 가스경유공(2)을 개폐하는 밸브시트(9)는 밀봉 안정성을 위하여 폴리머 소재를 디스크(10) 하부 결합요홈(10a)에 장착시킨 후 고정볼트(13)를 사용하여 밸브시트(9)는 물론 디스크(10)가 벨로우즈형 홀더(8)의 밀봉축(8b)과 동시에 나사결합식으로 고정될 수 있도록 한다.In addition, the valve seat 9 for opening and closing the gas passage hole 2 of the shutoff valve 1 is mounted with a polymer material in the coupling recess 10a at the bottom of the disk 10 for sealing stability, and then using a fixing bolt 13. The valve seat 9 as well as the disk 10 can be screwed together with the sealing shaft 8b of the bellows-shaped holder 8 at the same time.

상기와 같이 구성된 본 고안의 SF6 절연가스 차단밸브(1)는 개폐조작 시 가스가 밸브시트(9)에서 누설될 경우 1차적으로 O-링(12)이 실링을 행하게 되며, 2차로 벨로우즈형 홀더(8)를 구성하는 벨로우즈관(8a)이 실링을 하게 되어 완벽한 실링을 수행할 수 있는 것이며,SF6 insulated gas shut-off valve 1 of the present invention configured as described above is the O-ring 12 is the first sealing when the gas leaks from the valve seat (9) during the opening and closing operation, the bellows-type holder The bellows pipe (8a) constituting (8) is to be sealed to perform a perfect sealing,

그리고 벨로우즈형 홀더(8)의 원형 플렌지부(8c) 좌우측을 직선부(8d)로 가공한 2각 단면구조로 구성하여 밸브덮개(4)의 내부에 대응 형성되는 직선부(4a)와 대응 결합토록 함으로써, 벨로우즈관(8a)의 이탈 방지 및 가스압력에 의한 비틀림을 보완할 수 있는 것이다.In addition, the left and right sides of the circular flange portion 8c of the bellows-shaped holder 8 are formed in a bilateral cross-section structure in which the straight portion 8d is processed to correspond to the linear portion 4a formed correspondingly inside the valve cover 4. By doing so, the separation of the bellows pipe 8a can be prevented and the torsion caused by the gas pressure can be compensated for.

이상에서 상세히 살펴 본 바와 같이 본 고안에서 제공하는 SF6 절연가스 차단밸브(1)는 그동안 수입에 의존하던 가스절연 스위치 기어장치의 SF6 절연가스 차단밸브를 국제 환경조건에 적합하게 개발함으로써 국내 가스절연 스위치 기어장치의 시스템 안정성을 확보해주고, 시스템의 국산화 비율을 높여서 가스차단 밸브제품의 가격 경쟁력을 배가할 수 있으며, 가압장치인 초정밀 벨로우즈와 메탈-폴리머, 메탈-메탈, 폴리머-폴리머 등의 접촉면 시트부에 대한 기술을 대폭 개선할 수 있고, 온실효과 가스(HFC, PFC, SF6) 등의 국제적 환경정책 규제 물질에 부합되는 기술을 확보할 수 있는 것이다.As described in detail above, the SF6 insulated gas shutoff valve (1) provided by the present invention is developed for domestic gas insulated switch by developing the SF6 insulated gas shutoff valve of the gas insulated switchgear device, which has been dependent on imports, in accordance with international environmental conditions It ensures the system stability of gear device and increases the localization rate of the system, which can double the price competitiveness of gas shutoff valve products, and the contact surface seat parts of ultra-precision bellows, pressurization device, metal-polymer, metal-metal, polymer-polymer, etc. It is possible to greatly improve the technology for the field, and to secure technology that meets international environmental policy regulatory substances such as greenhouse gas (HFC, PFC, SF6).

그리고 국내 수입품 보다 우수한 제품을 대체 공급할 수 있고 전력수요가 많은 국가에 수출을 통한 부가가치를 창출할 수 있는 등 그 기대되는 효과가 다대한 고안이다.In addition, it is possible to substitute and supply products superior to domestic imports and to create added value through exports to countries with high demand for electricity.

Claims (1)

가스경유공(2)을 가지는 밸브몸체(3)와, 상기 밸브몸체(3)의 상부에 나사결합되는 밸브덮개(4)의 내부에는 상부 핸들(5)과 고정너트(6)로 연결되며 하부가 스템(7)과 나사결합되는 벨로우즈형 홀더(8)로 이루어지며, 상기 벨로우즈형 홀더(8)의 하부에 밸브시트(9)가 결합된 디스크(10)가 고정되어 상기 가스경유공(2)을 핸들(5)의 조작에 따라 개폐할 수 있도록 구성되며, 상기 벨로우즈형 홀더(8)의 하부에는 하부밀봉덮개(11)가 나사결합된 통상의 SF6 절연가스 차단밸브(1)에 있어서;An upper handle 5 and a fixing nut 6 are connected to the inside of the valve body 3 having the gas passage hole 2 and the valve cover 4 screwed to the upper portion of the valve body 3. Comprising a bellows-type holder (8) is screwed with the stem (7), the disk 10, the valve seat 9 is coupled to the lower portion of the bellows-type holder (8) is fixed to the gas passage hole (2) In the conventional SF6 insulating gas shut-off valve (1) is configured to open and close according to the operation of the handle (5), the lower sealing cover (11) is screwed to the lower portion of the bellows-type holder (8); 상기 벨로우즈형 홀더(8)의 하부에 결합되는 하부밀봉덮개(11)와 벨로우즈형 홀더(8)를 구성하는 벨로우즈관(8a), 밀봉축(8b)을 상호 용접하여 일체화하고,The lower sealing cover 11 coupled to the lower portion of the bellows-type holder 8 and the bellows pipe 8a and the sealing shaft 8b constituting the bellows-type holder 8 are integrally welded together. 상기 하부밀봉덮개(11)는 원형으로 가공되며, 밀봉축(8b)과 하부밀봉덮개(11) 사이에는 O-링(12)을 삽입하고,The lower sealing cover 11 is processed into a circular shape, and inserts an O-ring 12 between the sealing shaft 8b and the lower sealing cover 11, 상기 벨로우즈형 홀더(8)의 원형 플렌지부(8c)의 좌우측을 직선부(8d)로 형성하여 밸브덮개(4)의 내부에 대응 형성되는 직선부(4a)와 대응 결합토록 하며,The left and right sides of the circular flange portion 8c of the bellows-type holder 8 are formed as straight portions 8d so as to correspond to the straight portions 4a formed correspondingly to the inside of the valve cover 4, 상기 밸브시트(9)는 폴리머 소재로 이루어지고, 디스크(10) 하부 결합요홈(10a)에 장착된 고정볼트(13)로 디스크(10)와 함께 밀봉축(8b)과 동시에 고정된 것을 특징으로 하는 에스에프6(SF6) 절연가스 차단밸브.The valve seat 9 is made of a polymer material and is fixed to the sealing shaft 8b together with the disk 10 by a fixing bolt 13 mounted on the lower coupling recess 10a of the disk 10. SF6 insulated gas shutoff valve.
KR20-2004-0013786U 2004-05-18 2004-05-18 SF6 Gas Insulated Shut Off Valve KR200357843Y1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100941048B1 (en) 2009-07-06 2010-02-05 주식회사 광명전기 Gas insullated switchgear provided with valve for operating when impact prussure and abnormal prussure are generated
KR101118271B1 (en) * 2009-09-03 2012-03-20 국민대학교산학협력단 Bellows globe valve
KR101142197B1 (en) * 2009-09-03 2012-05-08 국민대학교산학협력단 Bellows valve of button type
KR101796640B1 (en) 2017-06-26 2017-11-10 (주)비젼엔지니어링 Isolation valve for gas insulated switches of substations

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100941048B1 (en) 2009-07-06 2010-02-05 주식회사 광명전기 Gas insullated switchgear provided with valve for operating when impact prussure and abnormal prussure are generated
KR101118271B1 (en) * 2009-09-03 2012-03-20 국민대학교산학협력단 Bellows globe valve
KR101142197B1 (en) * 2009-09-03 2012-05-08 국민대학교산학협력단 Bellows valve of button type
KR101796640B1 (en) 2017-06-26 2017-11-10 (주)비젼엔지니어링 Isolation valve for gas insulated switches of substations

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