JP2012033363A - Insulator type switchgear - Google Patents

Insulator type switchgear Download PDF

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JP2012033363A
JP2012033363A JP2010171353A JP2010171353A JP2012033363A JP 2012033363 A JP2012033363 A JP 2012033363A JP 2010171353 A JP2010171353 A JP 2010171353A JP 2010171353 A JP2010171353 A JP 2010171353A JP 2012033363 A JP2012033363 A JP 2012033363A
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gas
arc
arc extinguishing
chamber
extinguishing chamber
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Akira Ishii
彰 石井
Takafumi Iijima
崇文 飯島
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Toshiba Corp
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Abstract

PROBLEM TO BE SOLVED: To exert functions as a gas-insulating switchgear by applying necessary minimum SF6 gas while using insulation gas such as COhaving less bad influence on the environment in order to suppress influences on global warming.SOLUTION: An insulator type switchgear comprises: a porcelain tube 31 for an arc-extinguishing chamber internally having an arc-extinguishing chamber 31a formed; a supporting porcelain tube 32 provided under the porcelain tube 31 for an arc-extinguishing chamber and internally having an insulation gas chamber 32a formed; a mechanism box 34 provided under the supporting porcelain tube 32; and a partition 33 which divides the arc-extinguishing chamber 31a and the insulation gas chamber 32a airtight from each other. The porcelain tube 31 for an arc-extinguishing chamber comprises a fixed electrode 35, a movable electrode 36, an insulation nozzle 37 provided on the movable electrode 36, and arc-extinguishing gas G2 to fill the arc-extinguishing chamber 31a therewith. The insulation gas chamber 32a is filled with insulation gas G1 having a global warming coefficient smaller than that of the arc-extinguishing gas G2.

Description

本発明の実施形態は、絶縁ガスを封入した密閉容器内に開閉可能とした接点を配置してなる碍子型開閉装置に関する。   Embodiments of the present invention relate to an insulator-type switching device in which contacts that can be opened and closed are arranged in a sealed container filled with an insulating gas.

電流遮断機能を有する碍子型開閉装置として一般的に使用されているものとしてガス絶縁開閉器がある。このガス絶縁開閉器には、その使用目的、必要とされる機能に応じて、負荷開閉器、断路器、遮断器など様々なものが存在する。その多くは六フッ化硫黄ガス（以下、ＳＦ６ガスという。）等の消弧性ガス中に１対の接点を配置し、通電時には両者を接触状態に保つことで通電を行い、電流遮断時には接点を開離させて前記ガス中にアーク放電を発生させ、そのアークを消弧することで電流を遮断する方式のものである。   A gas-insulated switch is commonly used as an insulator-type switch having a current interrupt function. There are various types of gas-insulated switches such as a load switch, a disconnect switch, and a circuit breaker depending on the purpose of use and the required function. Most of them are provided with a pair of contacts in an arc extinguishing gas such as sulfur hexafluoride gas (hereinafter referred to as SF6 gas). Is generated to generate an arc discharge in the gas, and the current is cut off by extinguishing the arc.

従来のこの種の碍子型開閉装置として、例えば特許文献１に示されるような構成のものがある。   As a conventional insulator-type opening / closing device of this type, for example, there is a configuration as shown in Patent Document 1.

すなわち、特許文献１に示される碍子型開閉装置について図４を参照して説明する。   That is, the lever-type opening / closing device disclosed in Patent Document 1 will be described with reference to FIG.

図４は、従来の碍子型開閉装置の一例を示す要部の縦断面図である。図４に示す従来の碍子型開閉装置１は、接地された金属あるいは碍管等からなる密閉容器２内において、消弧性ガス３が充填されている。密閉容器２内には固定接触部４および可動接触部５が対向して配置されており、固定接触部４および可動接触部５にはそれぞれ固定アーク接触子６ａおよび可動アーク接触子６ｂが設けられている。   FIG. 4 is a longitudinal sectional view of a main part showing an example of a conventional lever-type opening / closing device. The conventional insulator-type opening / closing device 1 shown in FIG. 4 is filled with an arc-extinguishing gas 3 in a sealed container 2 made of a grounded metal or an insulator tube. A fixed contact portion 4 and a movable contact portion 5 are arranged opposite to each other in the sealed container 2, and a fixed arc contact 6 a and a movable arc contact 6 b are provided on the fixed contact portion 4 and the movable contact portion 5, respectively. ing.

これらアーク接触子６ａ，６ｂは通常運転時では接触導通状態にあり、遮断動作時は相対移動により開離すると共に両アーク接触子６ａ，６ｂ間の空間にアーク７を発生させるようになっている。さらに、可動接触部５側にはアーク７に対し絶縁ガス３を消弧性ガスとして吹き付けるガス流発生手段９が設置されている。   These arc contacts 6a and 6b are in a contact conduction state during normal operation, and are separated by relative movement during a shut-off operation, and an arc 7 is generated in the space between the arc contacts 6a and 6b. . Furthermore, gas flow generating means 9 for blowing the insulating gas 3 as an arc extinguishing gas to the arc 7 is installed on the movable contact portion 5 side.

ガス流発生手段９には、ピストン１０、シリンダ１１、パッファ室１２、絶縁ノズル１３が設けられている。また、固定接触部４側には固定側熱ガス流１４ａが通過可能な金属製の排気筒１５が取り付けられている。可動接触部５側には可動側熱ガス流１４ｂが通過可能な中空ロッド１６が可動アーク接触子６ｂに連なって設けられている。   The gas flow generating means 9 is provided with a piston 10, a cylinder 11, a puffer chamber 12, and an insulating nozzle 13. Further, a metal exhaust cylinder 15 through which the fixed-side hot gas flow 14a can pass is attached to the fixed contact portion 4 side. On the movable contact portion 5 side, a hollow rod 16 through which the movable-side hot gas flow 14b can pass is connected to the movable arc contact 6b.

以上の構成を有するガス遮断器機能の遮断過程において、可動接触部５が図の左方向に動作すると、固定されているピストン１０がシリンダ１１の内部空間であるパッファ室１２を圧縮して同部の圧力を上昇させる。そして、パッファ室１２内に存在する消弧性ガス３が高圧力のガス流となってノズル１３に導かれ、このノズル１３から固定アーク接触子６ａ，可動アーク接触子６ｂ間に発生したアーク７に対して強力に吹付けられる。これにより、両アーク接触子６ａ，６ｂ間に発生した導電性のアーク７は消滅し電流は遮断される。   In the shut-off process of the gas circuit breaker function having the above configuration, when the movable contact portion 5 operates in the left direction in the figure, the fixed piston 10 compresses the puffer chamber 12 which is the internal space of the cylinder 11 and the same portion. Increase the pressure. The arc extinguishing gas 3 existing in the puffer chamber 12 is led to the nozzle 13 as a high-pressure gas flow, and the arc 7 generated between the fixed arc contact 6a and the movable arc contact 6b from the nozzle 13. Powerfully sprayed against. As a result, the conductive arc 7 generated between the arc contacts 6a and 6b disappears and the current is interrupted.

一般的に、パッファ室１２内の圧力が高いほど、絶縁ガス３が強力にアーク７へと吹き付けられるため、より高い電流遮断性能が得られるようになっている。   Generally, the higher the pressure in the puffer chamber 12, the stronger the insulating gas 3 is sprayed onto the arc 7, so that higher current interruption performance can be obtained.

なお、高温のアーク７に吹き付けられた絶縁ガス３は高温状態となり、固定側熱ガス流１４ａおよび可動側熱ガス流１４ｂとして固定アーク接触子６ａ，可動アーク接触子６ｂ間の空間より遠ざかるように流れ、最終的には密閉容器２内へ放散される。   The insulating gas 3 sprayed on the high-temperature arc 7 is in a high-temperature state, and moves away from the space between the fixed arc contact 6a and the movable arc contact 6b as the fixed-side hot gas flow 14a and the movable-side hot gas flow 14b. Flow and finally dissipate into the sealed container 2.

従来の碍子型開閉装置１によれば、絶縁ガス３として、ＳＦ６ガス、あるいは空気が使用されることが多い。ＳＦ６ガスは、アークを消滅させる性能(消弧性能)、および電気絶縁性能に優れており、特に高電圧用のガス絶縁開閉器においては広く使用されている。また、空気はコストが安いこと、安全で環境にも優しいことから、特に小形のガス絶縁開閉器において使用されることが多い。   According to the conventional insulator-type switchgear 1, SF6 gas or air is often used as the insulating gas 3. SF6 gas has excellent arc extinguishing performance (arc extinguishing performance) and electrical insulation performance, and is widely used particularly in high voltage gas insulated switches. Air is often used especially in small gas insulated switches because of its low cost, safety and environmental friendliness.

また、従来の他の開閉装置として、図５に例示すようにＳＦ６ガスを消弧性ガスとして用いた碍子型開閉装置２０の構成のものがある。この碍子型開閉装置２０は、複合碍管２１の下部に支持碍管２５を、更に支持碍管２５の下部に図示しない機構箱を設けた縦型構成の碍子型開閉装置である（特許文献２参照）。   Further, as another conventional switchgear, there is a structure of an insulator-type switchgear 20 using SF6 gas as an arc extinguishing gas as shown in FIG. The lever-type opening / closing device 20 is a vertical-type lever-type opening / closing device in which a supporting rod tube 25 is provided below the composite rod tube 21 and a mechanism box (not shown) is provided below the support rod tube 25 (see Patent Document 2).

この複合碍管２１には、固定電極２２および可動電極２３が設置され、可動電極２３には、ノズル２４が固定されている。   The composite rod 21 is provided with a fixed electrode 22 and a movable electrode 23, and a nozzle 24 is fixed to the movable electrode 23.

ノズル２４は、図示しないアーク接触子間に発生したアークに対して強力に吹付ける。これにより、接触子間に発生した導電性のアーク７は消滅し電流を遮断するようになる。   The nozzle 24 blows strongly against an arc generated between arc contacts (not shown). As a result, the conductive arc 7 generated between the contacts disappears and the current is interrupted.

この碍子型開閉装置２０は、別の磁器碍管もしくは複合碍管、すなわち支持碍管２５に絶縁支持され、支持碍管２５の下部は、図示しない操作機構を収納した機構箱に固定される。   The lever-type opening / closing device 20 is insulated and supported by another porcelain soot tube or a composite soot tube, that is, a support soot tube 25, and the lower portion of the support soot tube 25 is fixed to a mechanism box containing an operation mechanism (not shown).

通常、この種の碍子型開閉装置の複合碍管２１内に充填されるＳＦ６ガスは、特に高電圧用のガス絶縁開閉器において非常に適したガスといえるが、高い地球温暖化作用を有することが知られており、近年その使用量の削減が望まれている。地球温暖化作用の大きさは一般に地球温暖化係数、すなわちＣＯ２ガスを１とした場合の相対値により表され、ＳＦ６ガスの地球温暖化係数は２３９００に及ぶことが知られている。また、空気は安全性や環境保全の面では優れているが、その消弧性能および電気絶縁性能はＳＦ６ガスよりも大幅に劣るため、高電圧用のガス絶縁開閉器に広く適用するのは困難であると考えられている。 Normally, the SF6 gas filled in the composite insulator 21 of this kind of insulator type switchgear is a very suitable gas particularly in a high voltage gas insulated switch, but it has a high global warming action. In recent years, it has been desired to reduce the amount used. The magnitude of the global warming action is generally represented by a global warming coefficient, that is, a relative value when CO 2 gas is 1, and it is known that the global warming coefficient of SF6 gas reaches 23900. Air is superior in terms of safety and environmental protection, but its arc-extinguishing performance and electrical insulation performance are significantly inferior to those of SF6 gas, so it is difficult to widely apply it to high-voltage gas-insulated switches. It is considered to be.

特開２００７−２５８１３７号公報JP 2007-258137 A 特開２００３−３２３８３６号公報JP 2003-323836 A

そこで本発明は、環境面で悪影響の少ない絶縁ガスを可能な限り用いるようにする一方で、ＳＦ６ガスを主成分としたガスを必要限度に適用することで、ガス絶縁開閉器としての機能を発揮させるとともに地球温暖化への影響を可能な限り抑制することが可能な碍子型開閉装置を得ることを目的とする。   Therefore, the present invention exerts its function as a gas-insulated switch by using as much as possible an insulating gas that has less adverse effects on the environment while applying a gas mainly composed of SF6 gas to the required limit. An object of the present invention is to obtain a lever-type switchgear that can suppress the influence on global warming as much as possible.

上記目的を達成するために、本発明の実施形態によれば、内部に消弧室を形成した消弧室用碍管と、この消弧室用碍管の下部に設けられ、内部に絶縁ガス室を形成した支持碍管と、この支持碍管の下部に設けられた機構箱と、前記消弧室と絶縁ガス室の間を気密的に区分するように設けられた仕切板と、を備え、前記消弧室にはＳＦ６ガスを含有する消弧性ガスが封入され、前記絶縁ガス室には前記消弧性ガスよりも地球温暖化係数の小さい絶縁性ガスが封入され、前記消弧室用碍管には、その消弧室に設けられる固定電極および可動電極を備えたことを特徴とする碍子型開閉装置を提供する。   In order to achieve the above object, according to an embodiment of the present invention, an arc extinguishing chamber soot having an arc extinguishing chamber formed therein, a lower part of the arc extinguishing chamber soot, and an insulating gas chamber provided therein. A support box formed; a mechanism box provided at a lower portion of the support pipe; and a partition plate provided so as to hermetically partition between the arc extinguishing chamber and the insulating gas chamber. The chamber is filled with an arc extinguishing gas containing SF6 gas, the insulating gas chamber is filled with an insulating gas having a global warming coefficient smaller than that of the arc extinguishing gas, An insulator-type switchgear comprising a fixed electrode and a movable electrode provided in the arc extinguishing chamber is provided.

本発明の碍子型開閉装置の第１の実施形態を示す要部の縦断面図。The longitudinal cross-sectional view of the principal part which shows 1st Embodiment of the lever type switchgear of this invention. 本発明の碍子型開閉装置の第２の実施形態を示す要部の縦断面図。The longitudinal cross-sectional view of the principal part which shows 2nd Embodiment of the lever type switchgear of this invention. 本発明の碍子型開閉装置の第３の実施形態を示す要部の縦断面図。The longitudinal cross-sectional view of the principal part which shows 3rd Embodiment of the lever type switchgear of this invention. 従来の碍子型開閉装置の一例を示す要部の縦断面図。The longitudinal cross-sectional view of the principal part which shows an example of the conventional insulator type switchgear. 従来の碍子型開閉装置の他の例を示す要部の正面図。The front view of the principal part which shows the other example of the conventional insulator type switchgear.

以下、本発明の碍子型開閉装置の第１の実施形態乃至第３の実施形態について、図面を参照して説明する。   Hereinafter, first to third embodiments of the lever type opening and closing device of the present invention will be described with reference to the drawings.

［第１の実施形態］
本発明の第１の実施形態における碍子型開閉装置について、図１を参照して説明する。 [First Embodiment]
A lever-type opening / closing device according to a first embodiment of the present invention will be described with reference to FIG.

図1に示す碍子型開閉装置３０は、消弧室用碍管３１と、支持碍管３２と、これら両者の碍管３１および３２を接合する仕切板３３および、支持碍管３２の下部に設けられる機構箱３４とから構成される。   An insulator-type opening / closing device 30 shown in FIG. 1 includes an arc extinguishing chamber soot pipe 31, a support soot pipe 32, a partition plate 33 that joins both soot pipes 31 and 32, and a mechanism box 34 provided below the support soot pipe 32. It consists of.

消弧室用碍管３１は、支持碍管３２の上部に仕切板３３を介して絶縁支持され、その内部に円筒状の消弧室３１ａが形成されている。消弧室３１ａ内にはＳＦ６ガスを含有する消弧性ガスＧ１が封入され、この上部に固定電極３５が、下部に可動電極３６が設けられる。消弧性ガスＧ１としては、消弧性に優れた性状のガスが用いられる。固定電極３５および可動電極３６は、例えば円柱状のものである。可動電極３６には、固定電極３５に対向配置してＳＦ６ガスを圧縮して噴出させる絶縁ノズル３７が設けられる。   The arc extinguishing chamber hoist pipe 31 is insulated and supported on the upper part of the support hoist pipe 32 via a partition plate 33, and a cylindrical arc extinguishing chamber 31a is formed therein. An arc extinguishing gas G1 containing SF6 gas is enclosed in the arc extinguishing chamber 31a, a fixed electrode 35 is provided at the upper part, and a movable electrode 36 is provided at the lower part. As the arc extinguishing gas G1, a gas having excellent arc extinguishing properties is used. The fixed electrode 35 and the movable electrode 36 are, for example, cylindrical. The movable electrode 36 is provided with an insulating nozzle 37 that is disposed to face the fixed electrode 35 and compresses and ejects SF6 gas.

この絶縁ノズル３７は、消弧性ガスＧ１の封入された環境下で消弧性ガスＧ１を固定電極３５側に噴出することにより、可動電極３６と固定電極３５間に生じるアークを消弧する作用をなす。   The insulating nozzle 37 acts to extinguish an arc generated between the movable electrode 36 and the fixed electrode 35 by ejecting the arc-extinguishing gas G1 to the fixed electrode 35 side in an environment in which the arc-extinguishing gas G1 is sealed. Make.

消弧性ガスＧ１の封入ガス圧は、標準定格の場合、例えば７ｋｇ／ｃｍ２程度に封入するのが適当であるが、絶縁性能等を考慮して適宜変更して使用するのが望ましい。 In the case of the standard rating, it is appropriate to seal the arc-extinguishing gas G1 at, for example, about 7 kg / cm 2 , but it is desirable to change it appropriately in consideration of insulation performance and the like.

支持碍管３２は、絶縁ガスＧ２を封入した絶縁ガス室３２ａを備える。この絶縁ガスＧ２は、消弧性ガスＧ１より地球温暖化係数の小さい、例えばＣＯ２、乾燥空気または大気等である。 The supporting soot tube 32 includes an insulating gas chamber 32a in which an insulating gas G2 is enclosed. The insulating gas G2 has a global warming potential smaller than that of the arc extinguishing gas G1, for example, CO 2 , dry air, air, or the like.

支持碍管３２は、その下部が図示しない操作機構を収納した機構箱３４に対し絶縁性ガスＧ２により電気絶縁された状態で支持固定される。また、支持碍管３２内には、碍子型開閉装置３０の動作時において、機構箱３４からの駆動エネルギーを消弧室用碍管３１側に伝達させるための絶縁棒３８が設けられる。   The support pipe 32 is supported and fixed in a state where the lower part thereof is electrically insulated by an insulating gas G2 with respect to a mechanism box 34 containing an operation mechanism (not shown). In addition, an insulating rod 38 for transmitting drive energy from the mechanism box 34 to the arc extinguishing chamber soot 31 side when the insulator type opening / closing device 30 is operated is provided in the support soot 32.

この絶縁棒３８は、下端部が機構箱３４に固定され、上端部が消弧室用碍管３１の可動電極３６に固定される。この絶縁棒３８を上下動させることにより可動電極３６を固定接点３５に対して通・断電させることができる。   The insulating rod 38 has a lower end portion fixed to the mechanism box 34 and an upper end portion fixed to the movable electrode 36 of the arc extinguishing chamber tub tube 31. By moving the insulating rod 38 up and down, the movable electrode 36 can be connected to or disconnected from the fixed contact 35.

支持碍管３２の絶縁ガス室３２ａ内における絶縁性ガスＧ２の封入圧力は、消弧室用碍管３１側と機構箱３４との絶縁性を保持するために所要の封入圧力、例えば７ｋｇ／ｃｍ２程度に封入される。この封入ガス圧や絶縁ガス室３２ａの長手方向長さＬ１は、絶縁性能等を考慮して適宜変更して使用するのが望ましい。 The sealing pressure of the insulating gas G2 in the insulating gas chamber 32a of the supporting soot tube 32 is a required sealing pressure for maintaining the insulation between the arc extinguishing chamber soot tube 31 side and the mechanism box 34, for example, about 7 kg / cm 2. Enclosed. It is desirable that the sealed gas pressure and the length L1 in the longitudinal direction of the insulating gas chamber 32a be appropriately changed in consideration of the insulating performance and the like.

仕切板３３は、消弧室用碍管３１内の消弧性ガスＧ１と支持碍管３２内の絶縁性ガスＧ２との境界を気密的に仕切る平板形状のものである。   The partition plate 33 has a flat plate shape that hermetically partitions the boundary between the arc extinguishing gas G1 in the arc extinguishing chamber soot 31 and the insulating gas G2 in the support soot pipe 32.

仕切板３３には、可動電極３６の外形状に合致する、例えば円形状の透孔３３ａが設けられ、この透孔３３ａに可動電極３６の下端部が気密的に嵌め込まれた構成になっている。したがって、消弧室３１ａの消弧性ガスＧ１と支持碍管３２の絶縁ガス室３２ａの絶縁ガスＧ２とが相互に漏れない構成になっている。   The partition plate 33 is provided with, for example, a circular through hole 33a that matches the outer shape of the movable electrode 36, and the lower end portion of the movable electrode 36 is fitted into the through hole 33a in an airtight manner. . Therefore, the arc-extinguishing gas G1 in the arc-extinguishing chamber 31a and the insulating gas G2 in the insulating gas chamber 32a in the supporting soot tube 32 do not leak from each other.

なお、この仕切板３３の形状は、特に平板形状である必要はなく、消弧性ガスＧ１と絶縁性ガスＧ２を気密的に区分することができ、かつ、機構箱３４からの駆動エネルギーを伝達することができる構造のものであればよい。   The shape of the partition plate 33 is not particularly required to be a flat plate shape, and the arc extinguishing gas G1 and the insulating gas G2 can be hermetically separated, and driving energy from the mechanism box 34 is transmitted. Any structure can be used.

また、固定電極３５側と可動電極３６側には、図示しない電極端子が設けられ、大気中に設置されている図示しない母線や、他の機器に、導体３９ａ，３９ｂを介して接続される。機構箱３４は、碍子型開閉装置３０の動作時において、駆動エネルギーを消弧室用碍管３１側に伝達させるために設けられる。   Further, electrode terminals (not shown) are provided on the fixed electrode 35 side and the movable electrode 36 side, and are connected to a bus bar (not shown) installed in the atmosphere and other devices via conductors 39a and 39b. The mechanism box 34 is provided in order to transmit drive energy to the arc extinguishing chamber soot 31 side when the lever-type opening / closing device 30 is in operation.

次に、碍子型開閉装置３０の作用について説明する。   Next, the operation of the lever type opening / closing device 30 will be described.

碍子型開閉装置３０が駆動すると、消弧室用碍管３１内において、両固定電極３５，可動電極３６間でアークが生じるが、周囲に封入された消弧性ガスＧ１の消弧作用によりアークが瞬時に消弧された状態で電流は遮断される。   When the insulator-type opening / closing device 30 is driven, an arc is generated between the fixed electrode 35 and the movable electrode 36 in the arc tube 31 for the arc extinguishing chamber. The arc is generated by the arc extinguishing action of the arc extinguishing gas G1 enclosed in the surrounding area. The current is cut off while the arc is extinguished instantaneously.

碍子型開閉装置３０によれば、両固定電極３５，可動電極３６間の開閉動作により起生する生成物が仕切板より下方に落下することはなく、下方の機構箱３４周辺を主とする碍子型開閉装置３０のメンテナンス周期を長くすることができる。   According to the lever-type opening / closing device 30, the product generated by the opening / closing operation between the fixed electrode 35 and the movable electrode 36 does not fall below the partition plate, and the lever is mainly around the mechanism box 34 below. The maintenance cycle of the mold opening / closing device 30 can be lengthened.

更に、消弧性ガスＧ１の区分には消弧性に優れた性状のガスを、絶縁性ガスＧ２の区分には絶縁性に優れた性状のガス、例えば乾燥空気を、それぞれ等しいまたは所望の異なる圧力で封入することができるので、碍子型開閉装置３０において、消弧室用碍管３１と支持碍管３２の組み立てる際の製作性が向上する。   Further, a gas having an excellent arc extinguishing property is used for the arc extinguishing gas G1, and a gas having an excellent insulating property, for example, dry air, is used for the insulating gas G2, which is equal or different from each other. Since it can be sealed with pressure, in the insulator-type opening / closing device 30, the manufacturability when the arc extinguishing chamber soot 31 and the support soot 32 are assembled is improved.

このように、消弧性ガスＧ１の区分には消弧性に優れた性状のガスを、絶縁性ガスＧ２の区分には絶縁性に優れた性状のガスを、それぞれ等しいまたは所望の異なる圧力で封入することにより全体的に所望の絶縁性能を満足できる碍子型開閉装置３０を得ることができる。   As described above, a gas having excellent arc-extinguishing properties is used for the arc extinguishing gas G1, and a gas having excellent insulating properties is used for the insulating gas G2 at equal or different desired pressures. By encapsulating, an insulator-type switchgear 30 that can satisfy the desired insulation performance as a whole can be obtained.

したがって、従来の碍子型開閉装置のように、ガス区分なく全体に消弧性ガスＧ１としてＳＦ６ガスを使用した従来の場合と比較してＳＦ６ガスの使用量を低減させることができ、地球温暖化への影響が小さい碍子型開閉装置３０を提供することができる。   Therefore, the amount of SF6 gas used can be reduced as compared with the conventional case in which SF6 gas is used as the arc extinguishing gas G1 as a whole without any gas division as in the conventional insulator type switchgear. It is possible to provide the lever-type opening / closing device 30 that has a small influence on the operation.

［第２の実施形態］
次に、第２の実施形態について図２を参照して説明する。 [Second Embodiment]
Next, a second embodiment will be described with reference to FIG.

第１の実施形態を示す図１と同一部分には同一符号を附した図２を参照して説明する。   The same part as FIG. 1 which shows 1st Embodiment is demonstrated with reference to FIG. 2 which attached | subjected the same code | symbol.

碍子型開閉装置４０は、消弧室用碍管３１と、支持碍管３２と、これら両者の消弧性碍管３１および支持碍管３２を接合する仕切板３３および支持碍管３２の下部に設けられる機構箱３４とから構成される。   The insulator-type opening / closing device 40 includes an arc extinguishing chamber soot pipe 31, a support soot pipe 32, a partition plate 33 for joining the arc extinguishing soot pipe 31 and the support soot pipe 32, and a mechanism box 34 provided below the support soot pipe 32. It consists of.

消弧室用碍管３１と支持碍管３２の接合部を仕切るように設けられる仕切板３３に透孔３３ａが設けられる。この透孔３３ａには、下端が機構箱３４に固定された絶縁棒３８の上端を透孔３３ａを貫通して所要のＬ２寸法突出するように設けられる。また、この突出した部分には、Ｌ２相当長さのベローズ４２が設けられる。具体的には、ベローズ４２の固定端側が仕切板３３の透孔３３ａを消弧室用碍管の消弧室側から気密的に覆い、且つ可動端部が可動電極側に固定されて設けられる。   A through-hole 33a is provided in a partition plate 33 provided so as to partition the joint portion between the arc extinguishing chamber soot 31 and the support soot 32. In the through hole 33a, the lower end is provided so that the upper end of the insulating rod 38 fixed to the mechanism box 34 penetrates the through hole 33a and protrudes to a required L2. Further, the protruding portion is provided with a bellows 42 having a length corresponding to L2. Specifically, the fixed end side of the bellows 42 covers the through hole 33a of the partition plate 33 in an airtight manner from the arc extinguishing chamber side of the arc extinguishing chamber soot and the movable end portion is fixed to the movable electrode side.

その他の構成については、図１に示す構成と同様であるので説明を省略する。   The other configuration is the same as the configuration shown in FIG.

次に、碍子型開閉装置４０の作用について説明する。   Next, the operation of the lever type opening / closing device 40 will be described.

碍子型開閉装置４０が駆動すると、消弧室用碍管３１内において、両固定電極３５，可動電極３６間でアークが生じるが、周囲に封入された消弧性ガスＧ１の消弧作用によりアークが瞬時に消弧された状態で電流は遮断される
また、支持碍管３２側においては、支持碍管３２の絶縁ガス室３２ａ内の絶縁性ガスＧ２の空気圧と消弧室用碍管３１内の消弧性ガスＧ１のガス圧がベローズ４２の伸縮作用により相互にバランスよく安定に保たれる。例えば、消弧性ガスＧ１のガス圧より絶縁性ガスＧ２の空気圧の方が大きい場合、ベローズ４２の長さＬ２が圧力バランスがとれるまで伸張する。そしてバランスよく安定に保たれる。 When the insulator-type switchgear 40 is driven, an arc is generated between the fixed electrode 35 and the movable electrode 36 in the arc tube 31 for the arc extinguishing chamber. The arc is generated by the arc extinguishing action of the arc extinguishing gas G1 enclosed in the surrounding area. In the state where the arc is extinguished instantaneously, the current is interrupted. On the side of the support soot pipe 32, the air pressure of the insulating gas G2 in the insulating gas chamber 32a of the support soot pipe 32 and the arc extinguishing property in the soot pipe 31 for the arc extinguishing chamber. The gas pressure of the gas G <b> 1 is kept balanced and stable by the expansion and contraction action of the bellows 42. For example, when the air pressure of the insulating gas G2 is larger than the gas pressure of the arc extinguishing gas G1, the length L2 of the bellows 42 extends until the pressure balance is achieved. And it is kept balanced and stable.

碍子型開閉装置４０によれば、両固定電極３５，可動電極３６間の開閉動作により起生する生成物が仕切板３３より下方に落下することはなく、下方の機構箱３４周辺を主とする碍子型開閉装置４０のメンテナンス周期を長くすることができる。   According to the insulator-type opening / closing device 40, the product generated by the opening / closing operation between the fixed electrode 35 and the movable electrode 36 does not fall below the partition plate 33, but mainly around the lower mechanism box 34. The maintenance cycle of the lever-type opening / closing device 40 can be lengthened.

更に、消弧性ガスＧ１の区分には消弧性に優れた性状のガスを、絶縁性ガスＧ２の区分には絶縁性に優れた性状のガス、例えば乾燥空気を、それぞれ等しいまたは所望の異なる圧力で封入することができるので、碍子型開閉装置４０において、消弧室用碍管３１と支持碍管３２の組み立てる際の製作性が向上する。   Further, a gas having an excellent arc extinguishing property is used for the arc extinguishing gas G1, and a gas having an excellent insulating property, for example, dry air, is used for the insulating gas G2, which is equal or different from each other. Since it can be sealed with pressure, in the insulator-type opening / closing device 40, manufacturability when the arc-extinguishing chamber tub tube 31 and the support tub tube 32 are assembled is improved.

また、碍子型開閉装置４０によれば、消弧性ガスＧ１と絶縁性ガスＧ２との境界を気密的に仕切る仕切板３３にベローズ４２を取り付けたから、絶縁ガス室３２ａ内のガス圧が消弧室３１ａ内のガス圧より高い場合および低い場合に応じて弾力的に伸縮する。したがって、ベローズ４２自体の伸縮作用によりガス区分の境界に摺動部が不要となり、これに伴う摺動部のメンテナンスが不要になること、および封入ガス圧の変動に対しても破壊等の症状が発生しない安定した開閉装置を得ることができる。   Further, according to the insulator-type switchgear 40, the bellows 42 is attached to the partition plate 33 that hermetically partitions the boundary between the arc-extinguishing gas G1 and the insulating gas G2, so that the gas pressure in the insulating gas chamber 32a is extinguished. It elastically expands and contracts depending on when it is higher or lower than the gas pressure in the chamber 31a. Therefore, the sliding portion is unnecessary at the boundary of the gas section due to the expansion and contraction action of the bellows 42 itself, the maintenance of the sliding portion accompanying this becomes unnecessary, and there is a symptom such as destruction with respect to fluctuations in the enclosed gas pressure. A stable switchgear that does not occur can be obtained.

このように、消弧性ガスＧ１の区分には消弧性に優れた性状のガスを、絶縁性ガスＧ２の区分には絶縁性に優れた性状のガスを、それぞれ等しいまたは所望の異なる圧力で封入することにより全体的に所望の絶縁性能を満足できる碍子型開閉装置４０を得ることができる。   As described above, a gas having excellent arc-extinguishing properties is used for the arc extinguishing gas G1, and a gas having excellent insulating properties is used for the insulating gas G2 at equal or different desired pressures. By encapsulating, an insulator-type switchgear 40 that can satisfy the desired insulation performance as a whole can be obtained.

したがって、従来の碍子型開閉装置のように、ガス区分なく全体に消弧性ガスＧ１としてＳＦ６ガスを使用した従来の場合と比較してＳＦ６ガスの使用量を低減させることができ、地球温暖化への影響が小さい碍子型開閉装置４０を提供することができる。   Therefore, the amount of SF6 gas used can be reduced as compared with the conventional case in which SF6 gas is used as the arc extinguishing gas G1 as a whole without any gas division as in the conventional insulator type switchgear. It is possible to provide the lever-type opening / closing device 40 that has a small influence on the operation.

［第３の実施形態］
次に、第３の実施形態について図３を参照して説明する。 [Third Embodiment]
Next, a third embodiment will be described with reference to FIG.

第１の実施形態を示す図１と同一部分には同一符号を附した図３を参照して説明する。   The same part as FIG. 1 which shows 1st Embodiment is demonstrated with reference to FIG. 3 which attached | subjected the same code | symbol.

碍子型開閉装置５０は、消弧室用碍管３１と、支持碍管３２と、これら両者の碍管３１および３２を接合する仕切板５１と、支持碍管３２の下部に設けられる機構箱３４および消弧性ガスＧ１を封入するガス導入管５２とから構成される。   An insulator-type opening / closing device 50 includes an arc extinguishing chamber soot 31, a support soot 32, a partition plate 51 that joins both soots 31 and 32, a mechanism box 34 provided at the lower part of the support soot 32, and arc extinguishing properties. It is comprised from the gas introduction pipe | tube 52 with which gas G1 is enclosed.

消弧室用碍管３１は、支持碍管３２の上部に仕切板５１を介して絶縁支持され、その内部に円筒状の消弧室３１ａが形成されている。この消弧室３１ａ内にはＳＦ６ガスを含有する消弧性ガスＧ１が封入され、この上部に固定電極３５が、下部に可動電極３６が設けられる。   The arc extinguishing chamber hoist pipe 31 is insulated and supported on the upper side of the support hoist pipe 32 via a partition plate 51, and a cylindrical arc extinguishing chamber 31a is formed therein. The arc extinguishing chamber 31a is filled with an arc extinguishing gas G1 containing SF6 gas, and a fixed electrode 35 is provided in the upper part and a movable electrode 36 is provided in the lower part.

支持碍管３２は、この支持碍管３２内にあってＣＯ２、乾燥空気または大気等の絶縁性ガスを含む絶縁ガスＧ２を封入した絶縁ガス室３２ａを形成している。この支持碍管３２は、その下部が図示しない操作機構を収納した機構箱３４に対し絶縁性ガスＧ２により電気絶縁された状態で支持固定される。支持碍管３２の絶縁ガス室３２ａ内には、碍子型開閉装置５０の動作時において、機構箱３４からの駆動エネルギーを消弧室用碍管３１側に伝達させるための絶縁棒３８が設けられる。 The supporting soot tube 32 forms an insulating gas chamber 32a in which the insulating gas G2 containing insulating gas such as CO 2 , dry air, or the atmosphere is enclosed. The lower support pipe 32 is supported and fixed in a state where the lower part thereof is electrically insulated by an insulating gas G2 with respect to a mechanism box 34 containing an operation mechanism (not shown). An insulating rod 38 is provided in the insulating gas chamber 32a of the support soot tube 32 to transmit drive energy from the mechanism box 34 to the arc extinguishing chamber soot 31 side when the insulator-type opening / closing device 50 is operated.

また、ガス導入管５２は、絶縁ガス室３２ａに消弧性ガスＧ１を封入するために設けられる。このガス導入管５２は、具体的には、絶縁棒３８と同様の絶縁耐力を持つ材質のものであって、仕切板５１に設けた透孔５１ｂに一方の開口端が気密的に接続され、他方側の開口端が機構箱３４の筐体部３４ａに延出するように設けられる。この構成により、消弧性ガスの導入口すなわち、可動電極３６を筐体部３４ａと同じ接地電位の条件に設置することができる。   The gas introduction pipe 52 is provided to enclose the arc extinguishing gas G1 in the insulating gas chamber 32a. Specifically, the gas introduction pipe 52 is made of a material having the same dielectric strength as that of the insulating rod 38, and one open end is hermetically connected to the through hole 51b provided in the partition plate 51, The other open end is provided so as to extend to the housing part 34 a of the mechanism box 34. With this configuration, the arc-extinguishing gas inlet, that is, the movable electrode 36 can be installed under the same ground potential condition as that of the casing 34a.

その他の構成については、図１に示す構成と同様であるので説明を省略する。   The other configuration is the same as the configuration shown in FIG.

次に、碍子型開閉装置５０の作用について説明する。   Next, the operation of the lever-type opening / closing device 50 will be described.

碍子型開閉装置５０が駆動すると、消弧室３１ａ内において、両固定電極３５，可動電極３６間でアークが生じるが周囲に封入された消弧性ガスＧ１の消弧作用によりアークが瞬時に消弧された状態で電流は遮断される。   When the insulator-type opening / closing device 50 is driven, an arc is generated between the fixed electrode 35 and the movable electrode 36 in the arc extinguishing chamber 31a, but the arc is extinguished instantaneously by the arc extinguishing action of the arc extinguishing gas G1 enclosed in the surrounding area. The current is interrupted in the arced state.

また、消弧室３１ａへの消弧性ガスＧ１の封入および封入圧力の調整については、機構箱３４側のガス導入弁５３を開閉しながらガス封入を行う。このときに支持碍管３２の絶縁ガス室３２ａ内の絶縁性ガスＧ２の空気圧を勘案してバランスよく、または所望の異なる圧力で封入することができる。   Further, with regard to the sealing of the arc extinguishing gas G1 in the arc extinguishing chamber 31a and the adjustment of the sealing pressure, gas sealing is performed while opening and closing the gas introduction valve 53 on the mechanism box 34 side. At this time, the insulating gas G2 in the insulating gas chamber 32a of the supporting soot tube 32 can be sealed in a well-balanced or desired different pressure in consideration of the air pressure of the insulating gas G2.

碍子型開閉装置５０によれば、両固定電極３５，可動電極３６間の開閉動作により起生する生成物が仕切板５１より下方に落下することはなく、下方の機構箱３４周辺を主とする碍子型開閉装置５０のメンテナンス周期を長くすることができる。   According to the insulator-type opening / closing device 50, the product generated by the opening / closing operation between the fixed electrode 35 and the movable electrode 36 does not fall below the partition plate 51, but mainly around the lower part of the mechanism box 34. The maintenance cycle of the lever-type opening / closing device 50 can be lengthened.

更に、消弧性ガスＧ１の区分には消弧性に優れた性状のガスを、絶縁性ガスＧ２の区分には絶縁性に優れた性状のガス、例えば乾燥空気を、それぞれ等しいまたは所望の異なる圧力で封入することができるので、碍子型開閉装置５０において、消弧室用碍管３１と支持碍管３２の組み立てる際の製作性が向上する。   Further, a gas having an excellent arc extinguishing property is used for the arc extinguishing gas G1, and a gas having an excellent insulating property, for example, dry air, is used for the insulating gas G2, which is equal or different from each other. Since it can be sealed with pressure, in the insulator-type opening / closing device 50, the manufacturability when the arc-extinguishing chamber tub tube 31 and the support tub tube 32 are assembled is improved.

このように、消弧性ガスＧ１の区分には消弧性に優れた性状のガスを、絶縁性ガスＧ２の区分には絶縁性に優れた性状のガスを、それぞれ等しいまたは所望の異なる圧力で封入することにより全体的に所望の絶縁性能を満足できる碍子型開閉装置５０を得ることができる。   As described above, a gas having excellent arc-extinguishing properties is used for the arc extinguishing gas G1, and a gas having excellent insulating properties is used for the insulating gas G2 at equal or different desired pressures. By encapsulating, it is possible to obtain an insulator-type switchgear 50 that can satisfy the desired insulation performance as a whole.

したがって、従来の碍子型開閉装置のように、ガス区分なく全体に消弧性ガスＧ１としてＳＦ６ガスを使用した従来の場合と比較してＳＦ６ガスの使用量を低減させることができ、地球温暖化への影響が小さい碍子型開閉装置５０を提供することができる。   Therefore, the amount of SF6 gas used can be reduced as compared with the conventional case in which SF6 gas is used as the arc extinguishing gas G1 as a whole without any gas division as in the conventional insulator type switchgear. It is possible to provide the lever-type opening / closing device 50 that has a small influence on the operation.

３０，４０，５０ 碍子型開閉装置
３１ 消弧室用碍管
３１ａ 消弧室
３２ 支持碍管
３２ａ 絶縁ガス室
３３，５１ 仕切板
３３ａ，５１ａ，５１ｂ 透孔
３４ 機構箱
３５ 固定電極
３６ 可動電極
３７ 絶縁ノズル
３８ 絶縁棒
３９ａ，３９ｂ 導体
４２ ベローズ
５２ ガス導入管
５３ ガス導入弁
Ｇ１ 消弧性ガス（ＳＦ６ガス）
Ｇ２ 絶縁性ガス（乾燥空気） 30, 40, 50 Insulator-type switchgear 31 Arc extinguishing chamber soot 31a Arc extinguishing chamber 32 Support soot tube 32a Insulating gas chamber 33, 51 Partition plates 33a, 51a, 51b Through hole 34 Mechanism box 35 Fixed electrode 36 Movable electrode 37 Insulating nozzle 38 Insulating rods 39a, 39b Conductor 42 Bellows 52 Gas introduction pipe 53 Gas introduction valve G1 Arc extinguishing gas (SF6 gas)
G2 Insulating gas (dry air)

Claims (5)

内部に消弧室を形成した消弧室用碍管と、この消弧室用碍管の下部に設けられ、内部に絶縁ガス室を形成した支持碍管と、この支持碍管の下部に設けられた機構箱と、前記消弧室と絶縁ガス室の間を気密的に区分するように設けられた仕切板と、を備え、
前記消弧室にはＳＦ６ガスを含有する消弧性ガスが封入され、前記絶縁ガス室には前記消弧性ガスよりも地球温暖化係数の小さい絶縁性ガスが封入され、
前記消弧室用碍管には、その消弧室に設けられる固定電極および可動電極を備えたことを特徴とする碍子型開閉装置。 Arc extinguishing chamber soot tube with an arc extinguishing chamber formed therein, a supporting soot tube provided under the arc extinguishing chamber soot tube with an insulating gas chamber formed therein, and a mechanism box provided under the supporting soot tube And a partition plate provided so as to hermetically partition between the arc extinguishing chamber and the insulating gas chamber,
The arc extinguishing chamber is filled with an arc extinguishing gas containing SF6 gas, and the insulating gas chamber is filled with an insulating gas having a smaller global warming coefficient than the arc extinguishing gas,
An insulator-type opening / closing device characterized in that the arc extinguishing chamber insulator tube includes a fixed electrode and a movable electrode provided in the arc extinguishing chamber. 前記可動電極には可動端部が気密的に固定されて設けられ、仕切板に設けた透孔には固定端部が消弧室に対して気密的に取りつけられるベローズを設けたことを特徴とする請求項１記載の碍子型開閉装置。   The movable electrode is provided with a movable end fixed in an airtight manner, and a through hole provided in the partition plate is provided with a bellows in which the fixed end is attached airtight to the arc extinguishing chamber. The lever-type switchgear according to claim 1. 前記可動電極を筐体部と同じ接地電位の条件で設置することを特徴とする請求項１または請求項２記載の碍子型開閉装置。   The lever-type switchgear according to claim 1 or 2, wherein the movable electrode is installed under the same ground potential condition as that of the casing. 前記絶縁性ガスは、ＣＯ２、乾燥空気または大気であることを特徴とする請求項１乃至請求項３のいずれか１つに記載の碍子型開閉装置。 The insulating gas, CO 2, insulator switchgear according to any one of claims 1 to 3, characterized in that it is dry air or air. 前記可動電極には、固定電極に対向配置して設けられて消弧性ガスを噴出するノズルを備えたことを特徴とする請求項１記載乃至請求項４のいずれか１つに記載の碍子型開閉装置。   The insulator type according to any one of claims 1 to 4, wherein the movable electrode is provided with a nozzle that is provided so as to face the fixed electrode and ejects arc-extinguishing gas. Switchgear.
JP2010171353A 2010-07-30 2010-07-30 Insulator type switchgear Withdrawn JP2012033363A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Publications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105390329A (en) * 2015-11-19 2016-03-09 平高集团有限公司 Column type circuit breaker housing and column type circuit breaker using column type circuit breaker housing
KR102318987B1 (en) * 2020-11-10 2021-10-29 주식회사 비츠로이엠 Vacuum interrupter assembly with vacuum degree monitoring function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105390329A (en) * 2015-11-19 2016-03-09 平高集团有限公司 Column type circuit breaker housing and column type circuit breaker using column type circuit breaker housing
KR102318987B1 (en) * 2020-11-10 2021-10-29 주식회사 비츠로이엠 Vacuum interrupter assembly with vacuum degree monitoring function

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