JP4463149B2 - Gas insulated switchgear - Google Patents

Gas insulated switchgear Download PDF

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JP4463149B2
JP4463149B2 JP2005147830A JP2005147830A JP4463149B2 JP 4463149 B2 JP4463149 B2 JP 4463149B2 JP 2005147830 A JP2005147830 A JP 2005147830A JP 2005147830 A JP2005147830 A JP 2005147830A JP 4463149 B2 JP4463149 B2 JP 4463149B2
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film
silver plating
contact
sliding
plating film
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JP2006325363A (en
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栄一 永尾
牧子 川田
忠郎 皆川
瑛 土江
恭一 大塚
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to JP2005147830A priority Critical patent/JP4463149B2/en
Priority to CN2006101054733A priority patent/CN1897199B/en
Priority to US11/436,545 priority patent/US8314355B2/en
Publication of JP2006325363A publication Critical patent/JP2006325363A/en
Priority to HK07104446.5A priority patent/HK1098248A1/en
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Priority to US13/004,191 priority patent/US20120012558A1/en
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Description

この発明は、ガス絶縁開閉装置、特に、電力系統の変電分野で使用されるガス絶縁遮断器に関して摺動接触部に形成された銀めっきに関する。   The present invention relates to a gas-insulated switchgear, and more particularly, to silver plating formed on a sliding contact portion with respect to a gas-insulated circuit breaker used in the field of power system transformation.

図2は、この発明が適用される2方向吹付方式の消弧室を備えたパッファ式ガス絶縁遮断装置の構成を示す側面図であり、このような基本構成は従来技術として広く知られている。
図2において、絶縁媒体であるSFガス11を封入した接地タンク12と操作装置13を収納する操作ハウジング14から構成され、軸シール15を介して、操作力を伝える構造となっている。操作装置13の駆動力は、接地タンク12内の絶縁支持筒16内に収納された絶縁操作ロッド17を介して伝達され、可動アークコンタクト18および可動コンタクト19をそれぞれ固定アークコンタクト20および固定コンタクト21から機械的に切り離すことにより、電流遮断を行う。
パッファシリンダ22とフィンガーコンタクト23は電気的に接続する必要があるため、パッファシリンダ22の表面をフィンガーコンタクト23が摺動する構造となっており、良好な電気的接触状態を実現するため、摺動部には銀めっき処理が施されている。
摺動により銀めっきの磨耗が進行した結果、銀めっき膜が消失すると、摺動部の接触抵抗の増加が起り、通電によるジュール熱に起因する発熱に至る恐れがある。
FIG. 2 is a side view showing a configuration of a puffer-type gas insulation cutoff device having a two-way blowing type arc extinguishing chamber to which the present invention is applied. Such a basic configuration is widely known as the prior art. .
In FIG. 2, it is composed of a ground tank 12 filled with SF 6 gas 11 as an insulating medium and an operation housing 14 that houses an operation device 13, and has a structure for transmitting an operation force via a shaft seal 15. The driving force of the operating device 13 is transmitted through an insulating operation rod 17 housed in an insulating support cylinder 16 in the ground tank 12, and the movable arc contact 18 and the movable contact 19 are respectively connected to the fixed arc contact 20 and the fixed contact 21. The current is interrupted by mechanically disconnecting from the circuit.
Since the puffer cylinder 22 and the finger contact 23 need to be electrically connected, the finger contact 23 slides on the surface of the puffer cylinder 22, and the sliding is performed in order to realize a good electrical contact state. The part is silver-plated.
If the silver plating film disappears as a result of the progress of silver plating abrasion due to sliding, the contact resistance of the sliding portion increases, which may lead to heat generation due to Joule heat due to energization.

摺動部の潤滑性を向上して、銀めっきの磨耗および接触抵抗の増加を抑制するため、潤滑材の適用が行われている(例えば、特許文献1参照)。
特許文献1における図4において、摺動部の母材としての可動接触子7の表面には銀めっき21が施されている。更に、摺動部の潤滑性を良好にするため、パーフロロポリエーテルによるバインダー22およびグラファイト23が潤滑材として使用されている。これらの潤滑材は400℃以上の耐熱性を備えており、バインダー22はグラファイト23を強固に保持することが可能であり、良好な潤滑性が維持される。
Lubricants have been applied to improve the lubricity of the sliding portion and to suppress silver plating wear and increase in contact resistance (see, for example, Patent Document 1).
In FIG. 4 in Patent Document 1, silver plating 21 is applied to the surface of the movable contact 7 as a base material of the sliding portion. Furthermore, in order to improve the lubricity of the sliding portion, a binder 22 and graphite 23 made of perfluoropolyether are used as a lubricant. These lubricants have heat resistance of 400 ° C. or higher, and the binder 22 can hold the graphite 23 firmly, and good lubricity is maintained.

特開平9−306326号公報(第3頁、図4)Japanese Patent Laid-Open No. 9-306326 (page 3, FIG. 4) 「表面技術総覧−めっき・陽極酸化編−」、初版、株式会社広信社、昭和58年6月15日、p.352−355"Surface Technology Overview-Plating / Anodic Oxidation-", First Edition, Hiroshinsha Co., Ltd., June 15, 1983, p. 352-355

上記のように、銀めっきには良好な電気接触状態の実現と良好な摺動状態の維持との相反する機能が要求される。良好な電気的接触の実現には接触抵抗の軽減が必要であるが、この機能を実現するには、軟質のめっき膜が適している。   As described above, silver plating is required to have a contradictory function of realizing a good electrical contact state and maintaining a good sliding state. In order to realize good electrical contact, it is necessary to reduce contact resistance. To realize this function, a soft plating film is suitable.

図3は摺動部の接触状態を微視的に描いた模式図である。一般に2つの面が接触する場合、各々の表面に存在する微小突起同士が接触し、押圧に応じて塑性変形が起こる。塑性変形の大きさは押圧と接触する部材の硬度に支配され、軟質膜は硬質膜よりも塑性変形が大きく、接触面積も大きくなる。接触抵抗はこの接触面積に支配されるため、接触面積が大きい軟質膜の接触抵抗は小さくなる。   FIG. 3 is a schematic diagram microscopically illustrating the contact state of the sliding portion. In general, when two surfaces come into contact with each other, microprotrusions existing on the respective surfaces come into contact with each other, and plastic deformation occurs in response to pressing. The magnitude of the plastic deformation is governed by the hardness of the member in contact with the pressure, and the soft film has a larger plastic deformation and a larger contact area than the hard film. Since the contact resistance is governed by this contact area, the contact resistance of a soft film having a large contact area becomes small.

一方、摺動に関しては、逆に硬質膜が有利である。ガス絶縁遮断器の摺動部に銀めっき膜を用いるのは、元来、銀めっき膜は柔らかく、押圧により大きな塑性変形が起こり、接触抵抗が小さくなる効果を期待しているからである。
パッファシリンダ22とフィンガーコンタクト23の摺動により、銀めっきが磨耗するが、一般に磨耗量は硬度に支配され、硬い膜ほど磨耗量は少なくなる。従って、軟質膜の場合、摺動による磨耗が大きくなり、あらかじめ、銀めっき膜を厚くする必要があるだけでなく、磨耗粉金属異物となり、機器の絶縁性能を低下させる恐れがある。
逆に、硬質膜の場合、磨耗量は低減できるが、接触抵抗が大きくなる。従来例にあるパーフロロポリエーテルによるバインダーおよびグラファイトから構成される潤滑材を軟質膜に適用することで、磨耗量を低減させる効果はある程度期待できるが、硬質膜に比べると、磨耗量は依然として多く、その効果は十分ではない。
On the other hand, for sliding, a hard film is advantageous. The reason why the silver plating film is used for the sliding portion of the gas insulated circuit breaker is that the silver plating film is originally soft and large plastic deformation is caused by pressing, so that the effect of reducing the contact resistance is expected.
Although the silver plating is worn by the sliding of the puffer cylinder 22 and the finger contact 23, the wear amount is generally governed by the hardness, and the harder the film, the smaller the wear amount. Therefore, in the case of a soft film, wear due to sliding increases, and it is not only necessary to thicken the silver plating film in advance, but also wear powder metal foreign matter, which may reduce the insulation performance of the device.
Conversely, in the case of a hard film, the amount of wear can be reduced, but the contact resistance increases. Although the effect of reducing the amount of wear can be expected to some extent by applying the lubricant composed of the binder made of perfluoropolyether and graphite in the conventional example to the soft film, the amount of wear is still much larger than that of the hard film. The effect is not enough.

なお、軟質膜と硬質膜は一般に光沢剤の有無に対応している。基本的組成による銀めっきの場合、軟質膜である無光沢銀めっきとなるが、前記非特許文献1のp.354における表2.70に記載された次の(1)〜(7)に示すような光沢剤を用いた銀めっきの場合、光沢剤の添加による電気化学反応の抑制により、銀の結晶組織が微細化され、表面平滑度が向上して光沢が得られる。微細な結晶の粒界には、添加された物質や水素が不純物として析出している結果、硬質のめっき膜となる。
(1)二酸化炭素とケトン類の縮合生成物
(2)キサントゲン塩
(3)ASK化合物(アクロレイン−二硫化硫黄縮合生成物)
(4)チオカクバジッド縮合生成物
(5)チオ硫酸塩
(6)セレニウムとテルリウム化合物
(7)アンチモン−ビスマス化合物
Note that the soft film and the hard film generally correspond to the presence or absence of a brightener. In the case of silver plating with a basic composition, it is matte silver plating which is a soft film. In the case of silver plating using a brightener as shown in the following (1) to (7) described in Table 2.70 in 354, the suppression of the electrochemical reaction due to the addition of the brightener causes the silver crystal structure to be reduced. Refined, surface smoothness is improved, and gloss is obtained. As a result of the addition of added substances and hydrogen as impurities at the grain boundaries of fine crystals, a hard plating film is formed.
(1) Condensation product of carbon dioxide and ketones (2) Xanthogen salt (3) ASK compound (Acrolein-sulfur disulfide condensation product)
(4) Thioccabazide condensation product (5) Thiosulfate (6) Selenium and tellurium compound (7) Antimony-bismuth compound

この発明は、上述のような課題を解決するためになされたもので、良好な電気接触状態を実現するとともに良好な摺動状態の維持を行える摺動接触部を備えたガス絶縁開閉装置を得ようとするものである。   The present invention has been made to solve the above-described problems, and provides a gas-insulated switchgear having a sliding contact portion that realizes a good electrical contact state and can maintain a good sliding state. It is about to try.

この発明に係るガス絶縁開閉装置では、絶縁ガスを封入した容器内に摺動接触部を有する開閉要素を収納したガス絶縁開閉装置において、前記摺動接触部に形成された銀めっき膜が、硬度の異なる複数のめっき膜の層で構成されており、前記めっき膜の一方が光沢銀めっきにより形成されるとともに、前記めっき膜の他方が無光沢銀めっきにより形成されるものであって、前記銀めっき膜として、その内部層が軟質膜で構成され、表面部分となる外部層が硬質膜で構成されているものである。 In the gas-insulated switchgear according to the present invention, in the gas-insulated switchgear in which an open / close element having a sliding contact part is housed in a container filled with insulating gas, the silver plating film formed on the sliding contact part has a hardness The plating film is formed by bright silver plating and the other of the plating film is formed by matte silver plating , wherein the silver As a plating film, the inner layer is composed of a soft film, and the outer layer serving as a surface portion is composed of a hard film .

この発明によれば、摺動接触部に形成された銀めっき膜が、硬度の異なる複数のめっき膜の層で構成されており、前記めっき膜の一方が光沢銀めっきにより形成されるとともに、前記めっき膜の他方が無光沢銀めっきにより形成され、前記銀めっき膜として、その内部層が軟質膜で構成され、表面部分となる外部層が硬質膜で構成されていることにより、所望の膜厚の銀めっき膜の層を容易に形成でき良好な電気接触状態を実現するとともに良好な摺動状態の維持を行える摺動接触部を備えたガス絶縁開閉装置を得ることができる。
According to this invention, the silver plating film formed on the sliding contact portion is composed of a plurality of plating film layers having different hardnesses, and one of the plating films is formed by bright silver plating, The other of the plating films is formed by matte silver plating, and as the silver plating film, the inner layer is composed of a soft film, and the outer layer serving as the surface portion is composed of a hard film, thereby obtaining a desired film thickness. Thus, a gas-insulated switchgear having a sliding contact portion capable of easily forming a silver plating film layer and realizing a good electrical contact state and maintaining a good sliding state can be obtained.

実施の形態1.
この発明による実施の形態1を図1から図5までについて説明する。図1は、この発明による実施の形態における構成を示す断面図である。図2は、この発明を適用する2方向吹付方式の消弧室を備えたパッファ式ガス絶縁遮断装置の構成を示す側面図である。図3は摺動接触部の接触状態を微視的に描いた模式図である。図4はこの発明による実施の形態における銀めっき膜の摩耗特性に関する評価結果を示す線図である。図5はこの発明による実施の形態における銀めっき膜の接触抵抗に関する評価結果を示す線図である。
Embodiment 1 FIG.
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing a configuration according to an embodiment of the present invention. FIG. 2 is a side view showing a configuration of a puffer-type gas insulation cutoff device provided with a two-way blowing type arc extinguishing chamber to which the present invention is applied. FIG. 3 is a schematic diagram microscopically illustrating the contact state of the sliding contact portion. FIG. 4 is a diagram showing the evaluation results regarding the wear characteristics of the silver plating film in the embodiment according to the present invention. FIG. 5 is a diagram showing an evaluation result regarding the contact resistance of the silver plating film in the embodiment according to the present invention.

この発明を適用する2方向吹付方式の消弧室を備えたパッファ式ガス絶縁遮断器を示す図2において、絶縁媒体であるSFガス11を封入した接地タンク12と操作装置13を収納する操作ハウジング14から構成され、軸シール15を介して、操作力を伝える構造となっている。操作装置13の駆動力は、接地タンク12内の絶縁支持筒16内に収納された絶縁操作ロッド17を介して伝達され、可動アークコンタクト18および可動コンタクト19をそれぞれ固定アークコンタクト20および固定コンタクト21から機械的に切り離すことにより、電流遮断を行う。パッファシリンダ22は可動アークコンタクト18とともに固定アークコンタクト20からの開離方向へ移動しパッファシリンダ22内部の消弧媒体としてのSFガス11を圧縮してアークに吹き付け消弧作用を行う。
可動アークコンタクト18とともに移動するパッファシリンダ22と固定部分に設けられたフィンガーコンタクト23とは電気的に接続する必要があるため、パッファシリンダ22の表面をフィンガーコンタクト23が摺動する構造となっており、良好な電気的接触状態を実現するため、摺動部には銀めっき処理が施されている。
In FIG. 2 showing a puffer type gas insulated circuit breaker having a two-way blowing type arc extinguishing chamber to which the present invention is applied, an operation for housing a grounding tank 12 and an operating device 13 enclosing SF 6 gas 11 as an insulating medium. The housing 14 is configured to transmit the operating force via the shaft seal 15. The driving force of the operating device 13 is transmitted through an insulating operation rod 17 housed in an insulating support cylinder 16 in the ground tank 12, and the movable arc contact 18 and the movable contact 19 are respectively connected to the fixed arc contact 20 and the fixed contact 21. The current is interrupted by mechanically disconnecting from the circuit. The puffer cylinder 22 moves together with the movable arc contact 18 in a direction away from the fixed arc contact 20, compresses the SF 6 gas 11 as the arc extinguishing medium inside the puffer cylinder 22, and blows the arc to perform an arc extinguishing action.
Since the puffer cylinder 22 that moves together with the movable arc contact 18 and the finger contact 23 provided in the fixed portion need to be electrically connected, the finger contact 23 slides on the surface of the puffer cylinder 22. In order to realize a good electrical contact state, the sliding portion is subjected to silver plating treatment.

図1は、この発明を実施するための実施の形態におけるガス絶縁遮断器摺動部の断面図である。
図1において可動コンタクト19、固定コンタクト21、パッファシリンダ22、フィンガーコンタクト23等における摺動接触部を構成する導電体からなる母材1の表面には軟質銀めっき膜2を介して硬質銀めっき膜3が配置されている。摺動部の母材1としては、一般にアルミニウムが使用され、1μm以下の薄い銅めっき膜を介して、無光沢銀めっきである軟質銀めっき膜2を製作する。その後、前記非特許文献1のp.354における表2.70に記載された次の(1)〜(7)に示すような光沢剤を入れた銀めっき浴により、光沢銀めっきである硬質銀めっき膜3を製作する。
(1)二酸化炭素とケトン類の縮合生成物
(2)キサントゲン塩
(3)ASK化合物(アクロレイン−二硫化硫黄縮合生成物)
(4)チオカクバジッド縮合生成物
(5)チオ硫酸塩
(6)セレニウムとテルリウム化合物
(7)アンチモン−ビスマス化合物
なお、めっき膜の硬度としては、ビッカース硬度による評価が一般的であり、軟質銀めっき膜2の硬度としては、Hv70〜80、硬質銀めっき膜3の硬度としては、Hv140〜160であるものを用いた。
FIG. 1 is a sectional view of a sliding portion of a gas insulated circuit breaker in an embodiment for carrying out the present invention.
In FIG. 1, a hard silver plating film is provided on the surface of a base material 1 made of a conductor constituting a sliding contact portion in a movable contact 19, a fixed contact 21, a puffer cylinder 22, a finger contact 23, etc. via a soft silver plating film 2. 3 is arranged. As the base material 1 of the sliding portion, aluminum is generally used, and a soft silver plating film 2 which is matte silver plating is manufactured through a thin copper plating film of 1 μm or less. Thereafter, p. The hard silver plating film 3 which is bright silver plating is manufactured by the silver plating bath containing the brightener as shown in the following (1) to (7) described in Table 2.70 in 354.
(1) Condensation product of carbon dioxide and ketones (2) Xanthogen salt (3) ASK compound (Acrolein-sulfur disulfide condensation product)
(4) Thioccabazide condensation product (5) Thiosulfate (6) Selenium and tellurium compound (7) Antimony-bismuth compound The hardness of the plating film is generally evaluated by Vickers hardness, and the soft silver plating film The hardness of 2 is Hv 70-80, and the hardness of the hard silver plating film 3 is Hv 140-160.

硬度が異なる2種類の銀めっき膜の機能に関しては、表面に配置した硬質膜が摺動による磨耗抑制機能を発揮し、内側に配置した軟質膜の塑性変形効果により、良好な電気接触状態が実現されるものである。摺動特性に関しては、摺動部表面が硬質銀めっき膜を備えているので、耐摩耗性に優れており、摺動による銀めっき膜の磨耗が軽減され、磨耗粉の発生も抑制される効果がある。   With regard to the functions of two types of silver plating films with different hardness, the hard film placed on the surface exerts the function of suppressing wear due to sliding, and a good electrical contact state is realized by the plastic deformation effect of the soft film placed inside It is what is done. As for sliding properties, the surface of the sliding part is equipped with a hard silver plating film, so it has excellent wear resistance, the wear of the silver plating film due to sliding is reduced, and the generation of wear powder is also suppressed. There is.

図3は摺動部の接触状態を微視的に描いた模式図である。一般に2つの面が接触する場合、各々の表面に存在する微小突起同士が接触し、押圧に応じて塑性変形が起こる。塑性変形の大きさは押圧と接触する部材の硬度に支配され、軟質膜は硬質膜よりも塑性変形が大きく、接触面積も大きくなる。接触抵抗はこの接触面積に支配されるため、接触面積が大きい軟質膜の接触抵抗は小さくなる。   FIG. 3 is a schematic diagram microscopically illustrating the contact state of the sliding portion. In general, when two surfaces come into contact with each other, microprotrusions existing on the respective surfaces come into contact with each other, and plastic deformation occurs in response to pressing. The magnitude of the plastic deformation is governed by the hardness of the member in contact with the pressure, and the soft film has a larger plastic deformation and a larger contact area than the hard film. Since the contact resistance is governed by this contact area, the contact resistance of a soft film having a large contact area becomes small.

一方、摺動に関しては、逆に硬質膜が有利である。ガス絶縁遮断器の摺動部に銀めっき膜を用いるのは、元来、銀めっき膜は柔らかく、押圧により大きな塑性変形が起こり、接触抵抗が小さくなる効果を期待しているからである。   On the other hand, for sliding, a hard film is advantageous. The reason why the silver plating film is used for the sliding portion of the gas insulated circuit breaker is that the silver plating film is originally soft and large plastic deformation is caused by pressing, so that the effect of reducing the contact resistance is expected.

図4は、この発明の銀めっき膜の磨耗特性に関する評価結果である。磨耗特性の評価は、ピンオンディスク装置を用いて、ガス絶縁遮断器における摺動部と同じ摺動速度、同じ押圧下で、1万回の摺動距離に相当する摺動試験を行い、試験後の銀めっき膜の磨耗厚さを測定した。
図4から、この発明による銀めっき膜の磨耗厚は30μm以下であり、軟質膜の磨耗厚の約半分であり、硬質膜とほぼ同程度の磨耗であることが明らかである。
FIG. 4 shows the evaluation results regarding the wear characteristics of the silver plating film of the present invention. The wear characteristics were evaluated using a pin-on-disk device with a sliding test equivalent to 10,000 sliding distances under the same sliding speed and pressure as the sliding part in a gas insulated circuit breaker. The wear thickness of the later silver plating film was measured.
From FIG. 4, it is clear that the wear thickness of the silver plating film according to the present invention is 30 μm or less, about half the wear thickness of the soft film, and almost the same as the hard film.

一方、電気接触状態に関しては、内部の軟質膜が塑性変形することにより、接触抵抗を低く抑えることが可能となる。上記の通り、接触抵抗は接触面積に支配されるが、本発明に銀めっき膜の場合、内部に軟質膜を備えており、この軟質膜が押圧下で塑性変形するため、十分な接触面積が得られ、接触抵抗を低くできる。   On the other hand, regarding the electrical contact state, the internal soft film is plastically deformed, so that the contact resistance can be kept low. As described above, the contact resistance is governed by the contact area, but in the case of the silver plating film according to the present invention, a soft film is provided inside, and since this soft film is plastically deformed under pressure, a sufficient contact area is obtained. Obtained, and contact resistance can be lowered.

図5は、この発明の銀めっき膜の接触抵抗に関する評価結果である。ガス絶縁遮断器の内部構造と同様の試験モデルを製作して、通電電流が100Aの場合における接触抵抗を電圧降下法にて測定した。
図5から、この発明の銀めっき膜の接触抵抗は5.0〜5.5μΩであり、硬質膜の約70%であり、軟質膜とほぼ同程度の接触抵抗であることが明らかである。
FIG. 5 shows the evaluation results regarding the contact resistance of the silver plating film of the present invention. A test model similar to the internal structure of the gas insulated circuit breaker was produced, and the contact resistance when the energization current was 100 A was measured by the voltage drop method.
From FIG. 5, it is clear that the contact resistance of the silver plating film of the present invention is 5.0 to 5.5 μΩ, about 70% of the hard film, and approximately the same contact resistance as that of the soft film.

従って、硬度が異なる2種類の銀めっき膜を用いることにより、表面に配置した硬質膜が摺動による磨耗を抑制し、内側に配置した軟質膜の塑性変形効果による良好な電気接触状態が実現され、硬質膜と同じレベルの磨耗特性、軟質膜と同じレベルの電気接触状態を有する摺動部を備えたガス絶縁遮断器の摺動部が得られる。   Therefore, by using two types of silver plating films with different hardnesses, the hard film disposed on the surface suppresses wear due to sliding, and a good electrical contact state is realized by the plastic deformation effect of the soft film disposed on the inside. A sliding part of a gas insulated circuit breaker having a sliding part having the same level of wear characteristics as a hard film and an electrical contact state of the same level as a soft film is obtained.

なお、従来例で示したパーフロロポリエーテルによるバインダーおよびグラファイト、あるいはオイルまたはグリースのような有機系潤滑材を、この発明による銀めっき膜の表面に塗布することで、更に潤滑性能が向上して、磨耗低減を図ることが可能である。特に、従来例に記載されている過大電流による異常発熱に関しては、上記潤滑材との併用により、異常発熱を抑制することが可能であることが知られている。   By applying the perfluoropolyether binder and graphite, or an organic lubricant such as oil or grease as shown in the conventional example to the surface of the silver plating film according to the present invention, the lubricating performance is further improved. It is possible to reduce wear. In particular, regarding abnormal heat generation due to an excessive current described in the conventional example, it is known that abnormal heat generation can be suppressed by using the lubricant together.

この発明の活用例として、SFガスを絶縁媒体として用いるガス絶縁遮断器の摺動部である可動コンタクト、固定コンタクト、パッファシリンダ、フィンガーコンタクト等を挙げることができる。 Examples of utilization of the present invention include movable contacts, fixed contacts, puffer cylinders, finger contacts, etc., which are sliding parts of gas insulated circuit breakers using SF 6 gas as an insulating medium.

この発明による実施の形態1によれば、SFなどの絶縁ガスを封入した接地タンク12からなる導電性容器内に可動コンタクト、固定コンタクト、パッファシリンダ22、フィンガーコンタクト23などにおける摺動接触部を有する遮断器部等の開閉要素を収納したガス絶縁遮断器等のガス絶縁開閉装置において、前記摺動接触部に形成された銀めっき膜が、硬度の異なる複数のめっき膜2,3で構成されているので、良好な電気接触状態を実現するとともに良好な摺動状態の維持を行える摺動接触部を備えたガス絶縁開閉装置を得ることができる。 According to the first embodiment according to the present invention, the movable contact in the conductive container made of the grounded tank 12 enclosing the insulating gas such as SF 6, a fixed contact, a puffer cylinder 22, the sliding contact portion such as in the fingers contact 23 In a gas-insulated switchgear such as a gas-insulated circuit breaker that houses switching elements such as a circuit breaker unit, the silver plating film formed on the sliding contact portion is composed of a plurality of plating films 2 and 3 having different hardnesses. Therefore, it is possible to obtain a gas insulated switchgear having a sliding contact portion that can realize a good electrical contact state and maintain a good sliding state.

また、この発明による実施の形態によれば、前項の構成において、前記銀めっき膜として、その内部層が軟質膜2で構成され、表面部分となる外部層が硬質膜3で構成されているので、内部層が軟質膜で構成され、表面部分となる外部層が硬質膜で構成されている銀めっき膜により、良好な電気接触状態を実現するとともに良好な摺動状態の維持を行える摺動接触部を備えたガス絶縁開閉装置を得ることができる。   According to the embodiment of the present invention, in the configuration of the preceding paragraph, as the silver plating film, the inner layer is constituted by the soft film 2, and the outer layer serving as the surface portion is constituted by the hard film 3. Sliding contact that realizes a good electrical contact state and maintains a good sliding state by a silver plating film in which the inner layer is made of a soft film and the outer layer that is a surface portion is made of a hard film. A gas-insulated switchgear having a portion can be obtained.

さらに、この発明による実施の形態によれば、前項の構成において、前記軟質膜2としての銀めっき膜のビッカース硬度がHv80以下で、前記硬質膜3としての銀めっき膜のビッカース硬度がHv100以上であるようにしたので、軟質膜および硬質膜の硬度を適正化することにより、良好な電気接触状態を実現するとともに良好な摺動状態の維持を行える摺動接触部を備えたガス絶縁開閉装置を得ることができる。   Furthermore, according to the embodiment of the present invention, in the configuration of the preceding paragraph, the Vickers hardness of the silver plating film as the soft film 2 is Hv 80 or less, and the Vickers hardness of the silver plating film as the hard film 3 is Hv 100 or more. A gas-insulated switchgear having a sliding contact portion that realizes a good electrical contact state and can maintain a good sliding state by optimizing the hardness of the soft film and the hard film. Obtainable.

この発明による実施の形態では、次の(1)〜(3)項にそれぞれ示す構成が提案されている。
(1)絶縁ガスを封入した接地タンク内に遮断器部を収納したガス絶縁遮断器において、摺動接触部を有する可動コンタクト、固定コンタクト、パッファシリンダとフィンガーコンタクトの摺動接触部に形成された銀めっき膜が、硬度の異なる複数のめっき膜で構成されていることを特徴とするガス絶縁遮断器。
(2)前記銀めっき膜が、内部層が軟質膜、外部(表面)層が硬質膜で構成されているを特徴とする前記(1)項記載のガス絶縁遮断器。
(3)前記軟質銀めっき膜のビッカース硬度がHv80以下で、前記硬質銀めっき膜のビッカース硬度がHv100以上であることを特徴とする前記(1)項記載のガス絶縁遮断器。
In the embodiment according to the present invention, configurations shown in the following items (1) to (3) are proposed.
(1) In a gas insulated circuit breaker in which a circuit breaker unit is housed in a grounded tank filled with insulating gas, it is formed on a movable contact having a sliding contact part, a fixed contact, a sliding contact part of a puffer cylinder and a finger contact. A gas-insulated circuit breaker, wherein the silver plating film is composed of a plurality of plating films having different hardnesses.
(2) The gas-insulated circuit breaker according to (1), wherein the silver plating film is composed of a soft film as an inner layer and a hard film as an outer (surface) layer.
(3) The gas insulated circuit breaker according to (1), wherein the soft silver plating film has a Vickers hardness of Hv80 or less, and the hard silver plating film has a Vickers hardness of Hv100 or more.

この発明による実施の形態では、良好な電気接触状態の実現と良好な摺動状態の維持との相反する機能を満たす銀めっき膜を備えたガス絶縁遮断器の摺動部を得るものである。   In the embodiment according to the present invention, a sliding portion of a gas insulated circuit breaker having a silver plating film that satisfies the contradictory functions of realizing a good electrical contact state and maintaining a good sliding state is obtained.

この発明による実施の形態に係る銀めっき膜を備えたガス絶縁遮断器の摺動部は、摺動部母材に軟質膜を配置して、軟質膜の外側である摺動部表面に硬質膜を備えている。   The sliding part of the gas insulated circuit breaker provided with the silver plating film according to the embodiment of the present invention includes a soft film disposed on the sliding part base material, and a hard film on the surface of the sliding part that is outside the soft film. It has.

この発明による実施の形態によれば、ガス絶縁遮断器摺動部の表面に硬度が異なる2種類の銀めっき膜を備えているので、表面に配置した硬質膜が摺動による磨耗抑制機能を発揮し、内側に配置した軟質膜の塑性変形効果により、良好な電気接触状態が実現される。   According to the embodiment of the present invention, since the surface of the gas insulation circuit breaker sliding portion is provided with two types of silver plating films having different hardnesses, the hard film disposed on the surface exhibits a wear suppressing function due to sliding. In addition, a good electrical contact state is realized by the plastic deformation effect of the soft film disposed inside.

この発明による実施の形態における構成を示す断面図である。It is sectional drawing which shows the structure in embodiment by this invention. この発明を適用する2方向吹付方式の消弧室を備えたパッファ式ガス絶縁遮断装置の構成を示す側面図である。It is a side view which shows the structure of the puffer type gas insulation cutoff device provided with the arc-extinguishing chamber of the two-way spraying method to which this invention is applied. 摺動接触部の接触状態を微視的に描いた模式図である。It is the schematic diagram which drawn the contact state of the sliding contact part microscopically. この発明による実施の形態における銀めっき膜の摩耗特性に関する評価結果を示す線図である。It is a diagram which shows the evaluation result regarding the abrasion characteristic of the silver plating film in embodiment by this invention. この発明による実施の形態における銀めっき膜の接触抵抗に関する評価結果を示す線図である。It is a diagram which shows the evaluation result regarding the contact resistance of the silver plating film in embodiment by this invention.

符号の説明Explanation of symbols

1 摺動部の母材、2 軟質銀めっき膜、3 硬質銀めっき膜、11 SFガス、12 接地タンク、13 操作装置、14 操作ハウジング、15 軸シール、16 極間絶縁支持筒、17 絶縁操作ロッド、18 可動アークコンタクト、19 可動コンタクト、20 固定アークコンタクト、21 固定コンタクト、22 パッファシリンダ、23 フィンガーコンタクト。
DESCRIPTION OF SYMBOLS 1 Base material of sliding part, 2 Soft silver plating film, 3 Hard silver plating film, 11 SF 6 gas, 12 Ground tank, 13 Operation apparatus, 14 Operation housing, 15 Shaft seal, 16 Interelectrode insulation support cylinder, 17 Insulation Operation rod, 18 Movable arc contact, 19 Movable contact, 20 Fixed arc contact, 21 Fixed contact, 22 Puffer cylinder, 23 Finger contact.

Claims (3)

絶縁ガスを封入した容器内に摺動接触部を有する開閉要素を収納したガス絶縁開閉装置において、前記摺動接触部に形成された銀めっき膜が、硬度の異なる複数のめっき膜の層で構成されており、前記めっき膜の一方が光沢銀めっきにより形成されるとともに、前記めっき膜の他方が無光沢銀めっきにより形成されるものであって、前記銀めっき膜として、その内部層が軟質膜で構成され、表面部分となる外部層が硬質膜で構成されていることを特徴とするガス絶縁開閉装置。 In a gas insulated switchgear in which an opening / closing element having a sliding contact portion is housed in a container filled with insulating gas, the silver plating film formed on the sliding contact portion is composed of a plurality of plating film layers having different hardnesses One of the plating films is formed by bright silver plating, and the other of the plating films is formed by matte silver plating , and the inner layer is a soft film as the silver plating film A gas-insulated switchgear characterized in that the outer layer serving as a surface portion is composed of a hard film . 前記軟質膜としての銀めっき膜のビッカース硬度がHv80以下で、前記硬質膜としての銀めっき膜のビッカース硬度がHv100以上であることを特徴とする請求項に記載のガス絶縁開閉装置。 The Vickers hardness of the silver plating film as the soft film is Hv80 less, the gas insulated switchgear according to claim 1, Vickers hardness of the silver plating film as the hard film is characterized in that at Hv100 or more. 前記銀めっき膜の摩耗厚が30μm以下であって、前記硬質膜の膜厚は前記摩耗厚よりも厚いことを特徴とする請求項1または請求項2に記載のガス絶縁開閉装置。 3. The gas insulated switchgear according to claim 1, wherein the wear thickness of the silver plating film is 30 μm or less, and the film thickness of the hard film is thicker than the wear thickness.
JP2005147830A 2005-05-20 2005-05-20 Gas insulated switchgear Expired - Fee Related JP4463149B2 (en)

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CN2006101054733A CN1897199B (en) 2005-05-20 2006-05-18 Gas insulated switch device
US11/436,545 US8314355B2 (en) 2005-05-20 2006-05-19 Gas insulated breaking device
HK07104446.5A HK1098248A1 (en) 2005-05-20 2007-04-26 Gas insulated breaking device
US13/004,191 US20120012558A1 (en) 2005-05-20 2011-01-11 Gas insulated breaking device

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