JP2004071170A - Disconnector - Google Patents

Disconnector Download PDF

Info

Publication number
JP2004071170A
JP2004071170A JP2002224579A JP2002224579A JP2004071170A JP 2004071170 A JP2004071170 A JP 2004071170A JP 2002224579 A JP2002224579 A JP 2002224579A JP 2002224579 A JP2002224579 A JP 2002224579A JP 2004071170 A JP2004071170 A JP 2004071170A
Authority
JP
Japan
Prior art keywords
disconnector
movable blade
movable
contact
main circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002224579A
Other languages
Japanese (ja)
Inventor
Hiroshi Kumagai
熊谷 洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Holdings Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Electric Holdings Ltd filed Critical Fuji Electric Holdings Ltd
Priority to JP2002224579A priority Critical patent/JP2004071170A/en
Publication of JP2004071170A publication Critical patent/JP2004071170A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Gas-Insulated Switchgears (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize a disconnector by eliminating a fixing side contact for the disconnector to be attached to a main circuit conductor and to mitigate the concentration of an electric field by reducing the number of component. <P>SOLUTION: A movable contact 21 is provided in the tip of a movable blade 7 of the disconnector rotating around a fulcrum, a notch part 20 is provided in the end part in the disconnector side of the main circuit conductor 8 laid between an appliance and the disconnector, and the movable contact installed in the movable blade 7 is inserted in the notch part 20 so as to connect the main circuit conductor 8 to the movable blade 7. Or, the tip part of the movable blade 7 of the disconnector rotating around the fulcrum is split to the both sides and formed into a forked movable contact 31, the end part of the disconnector side of the main circuit conductor 8 laid between the apparatus and the disconnector is clamped between the movable contact 31 provided in the tip part of the movable blade 7 so as to connect the main circuit conductor 8 to the movable blade 7. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
この発明は、高圧回路または特別高圧回路に使用する機器の電圧を開閉する断路器に関する。
【0002】
【従来の技術】
六弗化硫黄(SF6 )などの絶縁性ガスを封入した密閉容器に、高圧回路あるいは特別高圧回路の電気機器を収納した構成のガス絶縁電気設備は、帯電部が露出していないので安全性が高いし、装置全体を小形化できるので設置スペースを縮小できるなどの利点があり、多方面で使用されている。ところで、この密閉容器を小形にすれば、当該容器を構成する板の肉厚を薄くすることができるし、容器製作の手間を減らすことができるし、高価な絶縁性ガスの使用量を減らすこともできる。そこで密閉容器に収納する各機器を小形にすることと、収納している各機器の設置間隔を縮小することが、容器を小形化するのに重要である。
【0003】
図5はガス絶縁電気装置に内蔵して避雷器を開閉する従来の断路器の構造の一例を示した構造図であって、密閉容器2の中に設置している避雷器1と主回路導体8とを断路器で開閉する場合を示している。
図5の従来例において、断路器の開閉は、操作ハンドル4をハウジング3に挿入して回転させることで行う。すなわち操作ハンドル4が駆動軸5を回転させてリンク機構により駆動レバー6が上下する。避雷器1の頂部には断路器の可動ブレード7の一端を支持する支点があり、前記駆動レバー6が上昇すれば可動ブレード7はこの支点を中心にして反時計方向に回転し、可動ブレード7の先端部が固定側接触子9と接触する。主回路導体8は絶縁支持台11で固定され、その先端に断路器の固定側接触子9を取り付けているから、可動ブレード7の反時計方向回転により主回路導体8と避雷器1とは接続される。操作ハンドル4を逆方向へ回転させれば駆動レバー6が下降して可動ブレード7を時計方向へ回転させるから、主回路導体8と避雷器1との接続は断たれる。
【0004】
装置の運転中は避雷器1は常時主回路導体8と接続しているから、避雷器1用の断路器も常時オンであり、試験時などで極く稀にオフにすることがある程度である。このような使い方をする断路器は、例えば接地型計器用変圧器用など、多数がある。
【0005】
【発明が解決しようとする課題】
高圧回路や特別高圧回路では、電気部品の帯電部は、その角部分に丸みを持たせて電界の集中を避けるのであるが、多数の部品のすべての角部分や、各部品を結合するボルトやナットの角部分にまで丸みを持たせるのは困難である。そこで電界の集中による絶縁の低下を、機器の設置間隔を広げることで回避するのであるが、これでは密閉容器を小形化できない。
【0006】
ところで図5に図示の断路器は、主回路導体8の先端に固定側接触子9を取り付けているために、断路器の上下方向の寸法が大きくなる欠点がある。更に図示は省略しているが、固定側接触子9は多くの部品の集合で構成していて、電界の集中による絶縁の低下に対処するため、相間距離や対地間距離を大きくしており、装置の小形化を阻害している。
【0007】
そこでこの発明の目的は、主回路導体に取り付ける断路器用固定側接触子を省略して、断路器の小形化と、電界の集中を緩和できるように部品点数を削減することにある。
【0008】
【課題を解決するための手段】
前記の目的を達成するために、この発明の断路器は、
支点を中心にして回転する断路器の可動ブレードの先端部を接触部とし、機器と断路器との間に敷設する導体バーの断路器側終端部に切り込み部を設け、この切り込み部に前記可動ブレードの接触部を挿入することで、前記導体バーと可動ブレードとが電気的に接続される構造にする。
【0009】
または、支点を中心にして回転する断路器の可動ブレードの先端部を両側に別れた形状の接触部に形成し、機器と断路器との間に敷設する導体バーの断路器側終端部を、前記可動ブレードの先端部で挟み込むことで、前記導体バーと可動ブレードとが電気的に接続される構造にする。
【0010】
【発明の実施の形態】
図1は本発明の第1実施例を表した構造図であって、密閉容器内の断路器部分のみを図示しているが、避雷器1,密閉容器2,駆動レバー6,可動ブレード7,主回路導体8および絶縁支持台11の名称・用途・機能は、図5で既述の従来例の場合と同じであるから、同じ部分の説明は省略する。
【0011】
図1の第1実施例では、主回路導体8の先端部に切り込み部20を加工し、可動ブレード7が反時計方向へ回転したときに、当該可動ブレード7の先端に取り付けた可動接触子21がこの切り込み部20に嵌まりこむことで、主回路導体8と避雷器1とが接続されるようにしている。
図2は図1に図示の第1実施例の接触部の構造を表した構造図である。この図2において、可動ブレード7の先端には2枚の可動接触子21が、その中間にある接触ばね22と共に取り付けられており、可動ブレード7が反時計方向へ回転して主回路導体8の切り込み部20へ嵌まりこむと、接触ばね22が可動接触子21をこの切り込み部20に押しつけて、所定の接触圧力を与える。なお可動接触子21を、電気伝導性が良好で且つばね性を有する材料,例えば燐青銅板あるいはベリリウム銅板などで構成するならば、可動接触子21自身の弾性が接触圧力を生じるから、接触ばね22を省略することができる。
【0012】
図3は本発明の第2実施例を表した構造図であるが、前述の第1実施例と異なるのは主回路導体8の先端部の構造と、可動ブレード7の先端に取り付ける可動接触子31の部分のみであり、これ以外の部分は図1で既述の第1実施例と同じであるから、同じ部分の説明は省略する。
図4は図3に図示の第2実施例の接触部の構造を表した構造図である。この図4において、可動ブレード7の先端には、電気伝導性が良好で且つばね性を有する燐青銅板あるいはベリリウム銅板などで構成した2枚の可動接触子31が取り付けられていて、可動ブレード7が反時計方向へ回転すると、主回路導体8の先端に加工した固定接触部30を2枚の可動接触子31で挟みこむことで、両者は電気的に接続の状態となる。
【0013】
なお、図示は省略しているが、図2と図4に図示の各部品は、その角部分に適宜の丸みを備えることで絶縁性能を向上させている。
【0014】
【発明の効果】
従来の断路器は、主回路導体に固定側接触子を取り付けるなどのために構成部品が多くなり、且つ断路器の寸法も大きくなることから、電気機器を収納する配電盤やガス絶縁電気設備を小形化する際の障害になっていた。これに対して本発明では、断路器の固定側接触子を主回路導体に取り付ける代わりに、この主回路導体の先端部が断路器の固定側接触子となる加工を施しているので、わざわざ固定側接触子を取り付けるのと比べて断路器寸法を縮小できるし、部品点数も削減できるから、装置の小形化できるし、電界の集中も緩和できて機器間寸法も縮小できる効果も得られる。
【図面の簡単な説明】
【図1】本発明の第1実施例を表した構造図
【図2】図1に図示の第1実施例の接触部の構造を表した構造図
【図3】本発明の第2実施例を表した構造図
【図4】図3に図示の第2実施例の接触部の構造を表した構造図
【図5】ガス絶縁電気装置に内蔵して避雷器を開閉する従来の断路器の構造の一例を示した構造図
【符号の説明】
1    避雷器
2    密閉容器
3    ハウジング
4    操作ハンドル
5    駆動軸
6    駆動レバー
7    可動ブレード
8    主回路導体
9,30 固定側接触子
11    絶縁支持台
20    切り込み部
21,31 可動接触子
22    接触ばね
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disconnector for switching the voltage of a device used in a high-voltage circuit or a special high-voltage circuit.
[0002]
[Prior art]
Gas-insulated electrical equipment in which electrical equipment for a high-voltage circuit or a special high-voltage circuit is housed in a sealed container filled with an insulating gas such as sulfur hexafluoride (SF 6 ) is safe because the charged part is not exposed. And the size of the entire apparatus can be reduced, so that the installation space can be reduced. By the way, if this closed container is made small, the thickness of the plate constituting the container can be reduced, the labor for manufacturing the container can be reduced, and the amount of expensive insulating gas used can be reduced. You can also. Therefore, it is important to reduce the size of each device housed in the closed container and to reduce the installation interval of each device housed in the closed container in order to reduce the size of the container.
[0003]
FIG. 5 is a structural view showing an example of the structure of a conventional disconnecting switch that opens and closes a lightning arrester built in a gas-insulated electric device. The lightning arrester 1 and a main circuit conductor 8 installed in a closed container 2 are shown. Is opened and closed by a disconnector.
5, the disconnector is opened and closed by inserting the operating handle 4 into the housing 3 and rotating the same. That is, the operating handle 4 rotates the drive shaft 5 and the drive mechanism 6 is moved up and down by the link mechanism. At the top of the lightning arrester 1, there is a fulcrum for supporting one end of the movable blade 7 of the disconnector, and when the drive lever 6 is raised, the movable blade 7 rotates counterclockwise around this fulcrum. The distal end contacts the fixed contact 9. Since the main circuit conductor 8 is fixed on the insulating support base 11 and the fixed contact 9 of the disconnector is attached to its tip, the main circuit conductor 8 and the lightning arrester 1 are connected by the counterclockwise rotation of the movable blade 7. You. If the operation handle 4 is rotated in the reverse direction, the drive lever 6 is lowered and the movable blade 7 is rotated clockwise, so that the connection between the main circuit conductor 8 and the lightning arrester 1 is disconnected.
[0004]
Since the lightning arrester 1 is always connected to the main circuit conductor 8 during operation of the device, the disconnecting switch for the lightning arrester 1 is always on, and is rarely turned off during a test or the like. There are many disconnectors that use in this way, such as for a grounding type instrument transformer.
[0005]
[Problems to be solved by the invention]
In a high-voltage circuit or a special high-voltage circuit, the electrified part of an electric component has rounded corners to avoid concentration of an electric field.However, all corners of a large number of components, bolts connecting each component, and the like are used. It is difficult to round the corners of the nut. Therefore, the insulation is prevented from decreasing due to the concentration of the electric field by increasing the installation intervals of the devices. However, this cannot reduce the size of the sealed container.
[0006]
By the way, the disconnector shown in FIG. 5 has a disadvantage that the vertical dimension of the disconnector becomes large because the fixed contact 9 is attached to the tip of the main circuit conductor 8. Although not shown, the fixed contact 9 is made up of a group of many components, and the distance between phases and the distance between the ground and the ground are increased in order to cope with a decrease in insulation due to concentration of an electric field. This hinders downsizing of the device.
[0007]
Accordingly, an object of the present invention is to omit the fixed contact for the disconnector attached to the main circuit conductor, to reduce the size of the disconnector, and to reduce the number of components so as to reduce the concentration of the electric field.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the disconnector of the present invention comprises:
The tip of the movable blade of the disconnector that rotates about the fulcrum is used as the contact portion, and a notch is provided at the disconnector-side end of the conductor bar laid between the device and the disconnector, and the movable portion is provided at the notch. By inserting the contact portion of the blade, the conductor bar and the movable blade are electrically connected.
[0009]
Alternatively, the distal end of the movable blade of the disconnector that rotates about the fulcrum is formed in a contact portion having a shape separated on both sides, and the disconnector-side end of the conductor bar laid between the device and the disconnector, By sandwiching the movable bar with the tip of the movable blade, the conductor bar and the movable blade are electrically connected.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a structural view showing a first embodiment of the present invention, in which only a disconnecting switch portion in a closed vessel is illustrated, but a lightning arrester 1, a closed vessel 2, a driving lever 6, a movable blade 7, a main Since the names, uses, and functions of the circuit conductor 8 and the insulating support 11 are the same as those in the conventional example described above with reference to FIG. 5, the description of the same parts will be omitted.
[0011]
In the first embodiment shown in FIG. 1, a notch 20 is formed at the tip of the main circuit conductor 8, and when the movable blade 7 rotates counterclockwise, a movable contact 21 attached to the tip of the movable blade 7 is formed. The main circuit conductor 8 and the lightning arrester 1 are connected to each other by fitting into the notch portion 20.
FIG. 2 is a structural diagram showing the structure of the contact portion of the first embodiment shown in FIG. In FIG. 2, two movable contacts 21 are attached to the tip of the movable blade 7 together with a contact spring 22 located therebetween, and the movable blade 7 rotates counterclockwise to rotate the main circuit conductor 8. When the contact spring 22 is fitted into the notch 20, the contact spring 22 presses the movable contact 21 against the notch 20 to apply a predetermined contact pressure. If the movable contact 21 is made of a material having good electrical conductivity and a spring property, for example, a phosphor bronze plate or a beryllium copper plate, the elasticity of the movable contact 21 itself generates a contact pressure. 22 can be omitted.
[0012]
FIG. 3 is a structural view showing a second embodiment of the present invention, which differs from the first embodiment in the structure of the tip of the main circuit conductor 8 and the movable contact attached to the tip of the movable blade 7. Since only the portion 31 is the same as the first embodiment described above with reference to FIG. 1, the description of the same portion is omitted.
FIG. 4 is a structural view showing the structure of the contact portion of the second embodiment shown in FIG. In FIG. 4, two movable contacts 31 made of a phosphor bronze plate or a beryllium copper plate having good electrical conductivity and spring properties are attached to the tip of the movable blade 7. Is rotated counterclockwise, the fixed contact portion 30 formed at the tip of the main circuit conductor 8 is sandwiched between the two movable contacts 31, so that both are electrically connected.
[0013]
Although illustration is omitted, each component shown in FIGS. 2 and 4 is provided with an appropriate rounded corner to improve the insulation performance.
[0014]
【The invention's effect】
Conventional disconnectors require a large number of components to attach fixed contacts to the main circuit conductors, and the size of disconnectors also increases. Had become an obstacle to becoming On the other hand, according to the present invention, instead of attaching the fixed-side contact of the disconnector to the main circuit conductor, since the tip of the main circuit conductor is processed to be the fixed-side contact of the disconnector, it is bother fixed. The size of the disconnector can be reduced and the number of parts can be reduced as compared with the case where the side contacts are attached. Therefore, the device can be downsized, the concentration of the electric field can be reduced, and the size between the devices can be reduced.
[Brief description of the drawings]
1 is a structural diagram showing a first embodiment of the present invention; FIG. 2 is a structural diagram showing a structure of a contact portion of the first embodiment shown in FIG. 1; FIG. 3 is a second embodiment of the present invention; FIG. 4 is a structural view showing the structure of the contact portion of the second embodiment shown in FIG. 3. FIG. 5 is a structure of a conventional disconnector that opens and closes a lightning arrester built in a gas-insulated electric device. [Description of reference numerals]
DESCRIPTION OF SYMBOLS 1 Lightning arrester 2 Airtight container 3 Housing 4 Operation handle 5 Drive shaft 6 Drive lever 7 Movable blade 8 Main circuit conductor 9, 30 Fixed side contact 11 Insulation support base 20 Cutout 21, 31 Movable contact 22 Contact spring

Claims (4)

支点を中心にして回転する断路器の可動ブレードの先端部を接触部とし、機器と断路器との間に敷設する導体バーの断路器側終端部に切り込み部を設け、この切り込み部に前記可動ブレードの接触部を挿入して前記導体バーと可動ブレードとを電気的に接続することを特徴とする断路器。The tip of the movable blade of the disconnector that rotates about the fulcrum is used as the contact portion, and a notch is provided at the disconnector-side end of the conductor bar laid between the device and the disconnector, and the movable portion is provided at the notch. A disconnector, wherein a contact portion of a blade is inserted to electrically connect the conductor bar to the movable blade. 支点を中心にして回転する断路器の可動ブレードの先端部を両側に別れた形状の接触部に形成し、機器と断路器との間に敷設する導体バーの断路器側終端部を、前記可動ブレードの先端部で挟み込んで前記導体バーと可動ブレードとを電気的に接続することを特徴とする断路器。The distal end of the movable blade of the disconnector that rotates around the fulcrum is formed in a contact portion having a shape separated on both sides, and the disconnector-side terminal end of the conductor bar laid between the device and the disconnector is movable. A disconnector characterized in that the conductor bar and the movable blade are electrically connected to each other by being sandwiched between tip ends of the blades. 請求項1乃至請求項2に記載の断路器において、
前記導体バーの断路器側終端部または前記可動ブレードの接触部の角部分には丸みを持たせることを特徴とする断路器。
The disconnector according to claim 1 or 2,
A disconnector, wherein a corner of a terminal portion of the conductor bar on the disconnector side or a contact portion of the movable blade is rounded.
請求項1乃至請求項3に記載の断路器において、
前記可動ブレード先端の接触部には、前記導体バーの断路器側終端部と接触する際に、所定の接触圧力が加わる構造を備えることを特徴とする断路器。
The disconnector according to any one of claims 1 to 3,
A disconnector, wherein the contact portion at the tip of the movable blade is provided with a structure for applying a predetermined contact pressure when the contact portion comes into contact with the disconnector-side terminal portion of the conductor bar.
JP2002224579A 2002-08-01 2002-08-01 Disconnector Pending JP2004071170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002224579A JP2004071170A (en) 2002-08-01 2002-08-01 Disconnector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002224579A JP2004071170A (en) 2002-08-01 2002-08-01 Disconnector

Publications (1)

Publication Number Publication Date
JP2004071170A true JP2004071170A (en) 2004-03-04

Family

ID=32012502

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002224579A Pending JP2004071170A (en) 2002-08-01 2002-08-01 Disconnector

Country Status (1)

Country Link
JP (1) JP2004071170A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019196026A1 (en) * 2018-04-11 2019-10-17 Abb Schweiz Ag Flexible conductor for disconnector and the disconnector thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019196026A1 (en) * 2018-04-11 2019-10-17 Abb Schweiz Ag Flexible conductor for disconnector and the disconnector thereof
CN111971772A (en) * 2018-04-11 2020-11-20 Abb电网瑞士股份公司 Flexible conductor for isolating switch and isolating switch
US10991519B2 (en) 2018-04-11 2021-04-27 Abb Power Grids Switzerland Ag Flexible conductor for disconnector and the disconnector thereof
CN111971772B (en) * 2018-04-11 2023-04-11 日立能源瑞士股份公司 Flexible conductor for isolating switch and isolating switch

Similar Documents

Publication Publication Date Title
CA3070495C (en) Circuit breaker for gas insulated switchgear
JP4440794B2 (en) Switch
CA3070518C (en) Disconnector pole for gas insulated switchgear
TW563150B (en) Gas insulated switch gear
JP5324530B2 (en) High voltage switchgear
JP2004071170A (en) Disconnector
JPH11234824A (en) Gas-insulated switchgear
KR100232696B1 (en) Gas insulated switch gear
EP0602930A1 (en) Combined interrupter-disconnect switch blade for high voltage switch
JPS5826245B2 (en) Dielectric strength test equipment for closed type switchgear equipment
KR101879339B1 (en) Earthing Switch of Distributing Board
JP4040954B2 (en) Vacuum switchgear
EP1705767A1 (en) Combined disconnector-earthing switch device
JP4048728B2 (en) Vacuum valve
JP3816794B2 (en) Gas insulated switchgear
JPH09284927A (en) Gas-insulation electric equiupment with lightning arrester
JP2003045301A (en) Gas-insulated switching device
JP2000350318A (en) Gas insulated grounding switchgear
JP2000078714A (en) Simplified disconnector for gas insulated switchgear
JP3270280B2 (en) Gas insulated switchgear
JPH10201023A (en) Gas-insulated switchgear
JP2016163499A (en) Switchgear
JP2005216573A (en) Disconnector
JP4333076B2 (en) Disconnector and circuit breaker connection device
RU2126184C1 (en) Vacuum switch