JP3455471B2 - Gas insulated switchgear - Google Patents
Gas insulated switchgearInfo
- Publication number
- JP3455471B2 JP3455471B2 JP17351399A JP17351399A JP3455471B2 JP 3455471 B2 JP3455471 B2 JP 3455471B2 JP 17351399 A JP17351399 A JP 17351399A JP 17351399 A JP17351399 A JP 17351399A JP 3455471 B2 JP3455471 B2 JP 3455471B2
- Authority
- JP
- Japan
- Prior art keywords
- silver
- gas
- insulated switchgear
- layer
- contact
- 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.)
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- Gas-Insulated Switchgears (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は電力系統に使用さ
れるガス絶縁開閉機器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas insulated switchgear used in a power system.
【０００２】[0002]
【従来の技術】図６は、例えば特許公開公報特開平８−
２０３３６４号に記載された従来のガス絶縁開閉機器の
開閉接触子であり、断路器のチューリップ接触子の例を
示す。１３はチューリップ接触子、１４は可動接触子、
１４ａは可動接触子１４のめっき層、１５は固定接触子
片であり、多数の固定接触子片１５で固定接触子を構成
している。１５ａは固定接触子片１５のめっき層、１６
は導体、１７は取付け金具、１８は固定ボルト、１９は
支持金具、２０はガータスプリングである。2. Description of the Related Art FIG. 6 shows, for example, Japanese Patent Laid-Open Publication No. 8-
An example of a tulip contactor of a disconnector, which is an opening / closing contactor of a conventional gas-insulated switchgear described in No. 203364, is shown. 13 is a tulip contactor, 14 is a movable contactor,
Reference numeral 14a denotes a plated layer of the movable contactor 14, 15 denotes a fixed contact piece, and a large number of fixed contact pieces 15 form a fixed contact piece. 15a is a plating layer of the fixed contact piece 15, 16
Is a conductor, 17 is a mounting bracket, 18 is a fixing bolt, 19 is a supporting bracket, and 20 is a garter spring.
【０００３】次に動作について説明する。図６におい
て、ガス絶縁開閉装置の断路器の絶縁ガスを封入した容
器（図示せず）内に配設されたチューリップ接触子１３
の固定接触子片１５および可動接触子１４の摺動接触面
には、銀めっき或いは銀複合めっきを施しためっき層１
５ａおよび１４ａが設けられ、接触抵抗の低減が図られ
ている。銀めっき或いは銀複合めっきを施しためっき層
１５ａおよび１４ａのめっき層の厚さは５０〜２００μ
ｍである。チューリップ接触子１３の固定接触子片１５
および可動接触子１４の摺動により、めっき層１５ａと
１４ａが摺動し、摺動摩耗により、上記めっき層の厚さ
或いはそれに近い厚さの銀摩耗粉が生じて、絶縁物表面
或いはガス絶縁開閉機器の容器内面に蓄積し、絶縁低下
が生じる。また、めっき層１５ａおよび１４ａの銀の層
は固定接触子片１５および可動接触子１４の銅地金に機
械的に付着しているため、大きな荷重がかかると剥離し
て長さ数ｍｍの銀片が生じ、断路器のさらに大きな絶縁
低下を生じる。Next, the operation will be described. In FIG. 6, the tulip contactor 13 arranged in a container (not shown) in which the insulating gas of the disconnector of the gas insulated switchgear is sealed.
On the sliding contact surfaces of the fixed contact piece 15 and the movable contact 14 of FIG.
5a and 14a are provided to reduce the contact resistance. The plating layers 15a and 14a plated with silver or silver composite have a thickness of 50 to 200 μm.
m. Fixed contact piece 15 of tulip contact piece 13
And the sliding contact of the movable contact 14 causes the plating layers 15a and 14a to slide, and the sliding wear causes silver abrasion powder having a thickness of the plating layer or a thickness close to the thickness of the plating layer, and the surface of the insulator or the gas insulation. Accumulates on the inner surface of the container of the switchgear, causing insulation deterioration. Further, since the silver layers of the plating layers 15a and 14a are mechanically attached to the copper ingots of the fixed contact piece 15 and the movable contact 14, they are peeled off when a large load is applied and the silver having a length of several mm is peeled off. Stripping occurs, resulting in a greater insulation loss of the disconnector.
【０００４】さらに、ガス絶縁開閉機器が遮断器である
場合、接触子の摺動速度が断路器より大幅に大きく、数
ｍｍ程度の大きな銀片を生じて、ガス絶縁開閉装置の遮
断器の絶縁低下を生じ易い。これは、銀めっき層と地金
の銅との間の付着力が弱く、銀めっき層の厚さが厚いこ
とに起因していた。また、従来のガス絶縁開閉装置で
は、初期慣らし操作後に摩耗した銀めっき粉の清掃が必
要であり、所定の期間運転後の定期点検時にも運転中に
生じた銀めっき粉の清掃が必要であり、余分の手間がか
かりその分コストが高くなる。Furthermore, when the gas-insulated switchgear is a circuit breaker, the sliding speed of the contact is much higher than that of the disconnector, and a large silver piece of about several millimeters is produced to insulate the circuit breaker of the gas-insulated switchgear. It tends to decrease. This is because the adhesion between the silver plating layer and the copper of the base metal is weak, and the thickness of the silver plating layer is large. Further, in the conventional gas-insulated switchgear, it is necessary to clean the silver-plated powder worn after the initial break-in operation, and it is also necessary to clean the silver-plated powder generated during the operation during the regular inspection after the operation for a predetermined period. However, extra work is required and the cost is increased accordingly.
【０００５】[0005]
【発明が解決しようとする課題】従来のガス絶縁開閉機
器は以上のような構成であったので、開閉接触子の銀め
っき層よりの摩耗粉が生じて絶縁性能が低下したり、初
期および定期点検の費用が高くなる等の問題点があっ
た。ガス絶縁開閉機器を含めてガス絶縁電気機器は、コ
ンパクトにするため絶縁強度の大きいＳＦ6ガスなどの
絶縁ガスを絶縁空間に封入し、絶縁寸法を小さくしてい
る。従って、上記のような摩耗粉による悪影響は、絶縁
寸法の大きい空気絶縁の場合に比べて顕著となる。Since the conventional gas-insulated switchgear has the above-mentioned structure, abrasion powder is generated from the silver-plated layer of the switchgear, which deteriorates the insulation performance, and the initial and regular intervals. There were problems such as high inspection costs. In order to make the gas-insulated electrical equipment including the gas-insulated switchgear compact, an insulating gas such as SF6 gas, which has high insulation strength, is enclosed in the insulating space to reduce the insulating dimension. Therefore, the adverse effects of the above-mentioned abrasion powder are more remarkable than in the case of air insulation having a large insulation dimension.
【０００６】この発明は上記のような問題点を解決する
ためになされたもので、開閉接触子の開閉動作による摩
耗粉の生じ難いガス絶縁開閉機器を提供することを目的
としている。The present invention has been made to solve the above problems, and an object of the present invention is to provide a gas-insulated switchgear in which abrasion powder is less likely to be generated by the opening / closing operation of an opening / closing contact.
【０００７】[0007]
【課題を解決するための手段】請求項１に係るガス絶縁
開閉機器は、開閉接触子の地金を銅または銅合金で形成
し、開閉接触子の少なくとも一方の地金の表面に、外側
から銀成分を導入することにより該地金と銀の合金から
なる厚さ０.５〜１０μｍの表面層を形成して、この表
面層上で上記開閉接触子が摺動するようにしたものであ
る。請求項２に係るガス絶縁開閉機器は、請求項１記載
のものにおいて、表面層上に厚さ５〜２０μｍ銀めっき
層からなる保護層を形成したものである。請求項３に係
るガス絶縁開閉機器は、請求項１または請求項２記載の
ものにおいて、開閉接触子の開閉速度を２〜２０ｍ/ｓ
としたものである。請求項４に係るガス絶縁開閉機器
は、請求項１から請求項３のいずれかに記載のものにお
いて、表面層の成分が、地金側から表面に向かって銀の
比率が増加するようにしたものである。According to a first aspect of the present invention, there is provided a gas-insulated switchgear according to claim 1, wherein a metal of an opening / closing contact is made of copper or a copper alloy, and an outer surface of at least one of the opening / closing contact has an outer surface .
To form a surface layer having a thickness of 0.5~10μm made of the base metal and silver alloy by introducing silver component from those above closing contacts is to slide on this surface layer is there. A gas-insulated switchgear according to a second aspect of the present invention is the gas insulated switchgear according to the first aspect, wherein a protective layer made of a silver-plated layer having a thickness of 5 to 20 μm is formed on the surface layer. The gas-insulated switchgear according to claim 3 is the gas-insulated switchgear according to claim 1 or 2, wherein the opening / closing speed of the opening / closing contactor is 2 to 20 m / s.
It is what The gas-insulated switchgear according to claim 4 is the gas insulated switchgear according to any one of claims 1 to 3, wherein the component of the surface layer is such that the ratio of silver increases from the metal side toward the surface. It is a thing.
【０００８】[0008]
【発明の実施の形態】実施の形態１．以下、この発明の
一実施の形態について説明する。図１は本実施の形態に
おけるガス絶縁開閉機器である断路器の断面図であり、
図２は可動接触子の断面図である。図１および図２にお
いて、１は断路器、２は可動接触子、２ａは可動接触子
２の銅合金の地金、２ｂは可動接触子２の表面層であ
り、固定接触子（後述）との摺動面、すなわち可動接触
子２の表面に厚さ０.５〜１０μｍの銅と銀の合金層で
形成されている。３は固定接触子、３ａは固定接触子３
の銅合金の地金、３ｂは固定接触子３の表面層であり、
可動接触子２との摺動面、すなわち固定接触子３の表面
に厚さ０.５〜１０μｍの銅と銀の合金層で形成されて
いる。可動接触子２と固定接触子３とで、接離可能な２
つの開閉接触子を構成している。４はフィンガー接触
子、５および６は可動側と固定側の導体部、７は絶縁
筒、８および９は金属製シールド、１０は絶縁空間であ
り、上記１〜９が図示しない金属容器に収納され金属容
器の中にはＳＦ6ガス等の絶縁媒体が封入されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. An embodiment of the present invention will be described below. FIG. 1 is a sectional view of a disconnector which is a gas-insulated switchgear according to the present embodiment,
FIG. 2 is a sectional view of the movable contactor. 1 and 2, 1 is a disconnector, 2 is a movable contactor, 2a is a copper alloy metal of the movable contactor 2, and 2b is a surface layer of the movable contactor 2 and a fixed contactor (described later). On the sliding surface, that is, the surface of the movable contact 2, is formed of an alloy layer of copper and silver having a thickness of 0.5 to 10 μm. 3 is a fixed contactor, 3a is a fixed contactor 3
Copper alloy base metal 3b is a surface layer of the fixed contactor 3,
On the sliding surface with the movable contact 2, that is, on the surface of the fixed contact 3, an alloy layer of copper and silver having a thickness of 0.5 to 10 μm is formed. The movable contact 2 and the fixed contact 3 can be contacted and separated from each other 2
It constitutes one open / close contact. Reference numeral 4 is a finger contact, 5 and 6 are conductor parts on the movable side and a fixed side, 7 is an insulating cylinder, 8 and 9 are metal shields, 10 is an insulating space, and the above 1 to 9 are housed in a metal container (not shown). An insulating medium such as SF6 gas is enclosed in the metal container.
【０００９】可動接触子２および固定接触子３の表面層
２ｂ、３ｂは、地金２ａ、３ａの銅合金に対して、イオ
ンクラスタビーム法を用い、銀の微粒子を高真空中で電
気的に加速し高速で当てて、地金２ａ、３ａ上にその銅
合金と銀との合金層を形成することにより製造される。
この合金層つまり表面層２ｂ、３ｂの硬度は、地金の硬
度よりも高くなる。このイオンクラスタビーム法を用い
たものには、地金の表面に銀層を形成する方法もある
が、この場合は表面硬度は銀並であり、高い硬度が得ら
れないので、合金層を形成する条件で製造を行う必要が
ある。なお、イオンクラスタビーム法の他に、例えばイ
オン注入法、ＣＶＤ法などによって製造することもでき
る。The surface layers 2b and 3b of the movable contactor 2 and the fixed contactor 3 are made of copper fine particles of the bare metal 2a and 3a by an ion cluster beam method, and silver fine particles are electrically charged in a high vacuum. It is manufactured by accelerating and applying at a high speed to form an alloy layer of the copper alloy and silver on the base metal 2a, 3a.
The hardness of the alloy layers, that is, the surface layers 2b and 3b is higher than the hardness of the base metal. There is also a method using this ion cluster beam method to form a silver layer on the surface of the metal, but in this case the surface hardness is comparable to silver and high hardness cannot be obtained, so an alloy layer is formed. It is necessary to manufacture under the conditions. In addition to the ion cluster beam method, it can be manufactured by, for example, an ion implantation method, a CVD method, or the like.
【００１０】次に動作について説明する。図１におい
て、断路器１は開状態にあり、可動接触子２が右方向に
動いて、固定接触子３に接触し、固定接触子３の内面を
摺動して所定の閉状態定位置で止まる。また、断路器１
の開動作は逆の動きをする。すなわち可動接触子２が、
図１において左方向に動いて固定接触子３の内面を摺動
し、固定接触子３から離れて開状態になる。可動接触子
２の外側の表面層２ｂと固定接触子３に内側の表面層３
ｂとが接触し、その部分は銀を含有しているために接触
抵抗が小さく通電による温度上昇に耐えるようになって
いる。摺動面である表面層２ｂ、３ｂの硬度が高く、ま
た可動接触子２と固定接触子３の摺動面にはコンタクト
グリースが薄く塗布され、摺動による焼付を防止する役
割を果たしている。また、上記の例では地金２ａ、３ａ
を銅合金としたが、銅合金の代わりに銅であっても、表
面層２ｂ、３ｂとして銅と銀の合金層を形成することに
より、同様の効果が得られる。いずれの場合も、表面層
２ｂ、３ｂである合金層の銀の成分比率は２０〜９９％
とする。銀成分が少なすぎると接触抵抗が大きくなり、
逆に多すぎると硬度が小さくなって不具合である。Next, the operation will be described. In FIG. 1, the disconnector 1 is in an open state, the movable contactor 2 moves to the right, contacts the fixed contactor 3, and slides on the inner surface of the fixed contactor 3 at a predetermined closed state fixed position. Stop. Also, the disconnector 1
The opening operation of is the opposite. That is, the movable contact 2
In FIG. 1, it moves to the left and slides on the inner surface of the fixed contactor 3, and is separated from the fixed contactor 3 to be in an open state. The outer surface layer 2b of the movable contactor 2 and the inner surface layer 3 of the fixed contactor 3
Since b is in contact therewith and that part contains silver, the contact resistance is small and it withstands the temperature rise due to energization. The surface layers 2b and 3b, which are sliding surfaces, have a high hardness, and a thin contact grease is applied to the sliding surfaces of the movable contact 2 and the fixed contact 3 to prevent seizure due to sliding. In the above example, the metal 2a, 3a
Although a copper alloy was used, even if copper is used instead of the copper alloy, the same effect can be obtained by forming an alloy layer of copper and silver as the surface layers 2b and 3b. In either case, the composition ratio of silver in the alloy layers which are the surface layers 2b and 3b is 20 to 99%.
And If the silver component is too small, the contact resistance will increase,
On the contrary, if the amount is too large, the hardness becomes small, which is a problem.
【００１１】図１および図２において、断路器１は多数
回の操作後でも、可動接触子２と固定接触子３の摺動面
の硬度が高いため、可動接触子２と固定接触子３の摺動
による摩耗粉の量は極めて微量になっている。これは銀
のビッカース硬度が２６程度であるのに対して、可動接
触子２と固定接触子３の表面層２ｂ、３ｂの合金層の一
例ではビッカース硬度が１００程度と大幅に高いことに
よっている。また、銅合金にイオンクラスタビーム法で
銀粒子を当てることにより、銅合金の表面硬化現象によ
り、さらに硬度が上昇していることにも起因している。In FIGS. 1 and 2, the disconnecting switch 1 has a high hardness of the sliding surfaces of the movable contact 2 and the fixed contact 3 even after a large number of operations, so that the movable contact 2 and the fixed contact 3 have a high hardness. The amount of abrasion powder caused by sliding is extremely small. This is because the Vickers hardness of silver is about 26, while the Vickers hardness of the alloy layers of the surface layers 2b and 3b of the movable contact 2 and the fixed contact 3 is about 100, which is significantly high. Further, it is also caused by the fact that when the silver particles are applied to the copper alloy by the ion cluster beam method, the hardness is further increased due to the surface hardening phenomenon of the copper alloy.
【００１２】図３は、接触子の開閉速度と接触子の摩耗
量の関係を示すグラフである。曲線Ａが従来同様の銀め
っき（厚さ５０μｍ）の場合を示し、曲線Ｂは銀と銅の
合金の例を示す。回閉回数１００回当たりの摩耗量で比
較したものである。縦軸の単位のＰ.Ｕ.は、前者の低速
度における摩耗量を１として表したという意味である。
図３から分かるように、接触子の摺動速度が２ｍ/ｓを
超えると銀めっきでは摩耗量が大幅に増加する傾向にあ
り、銀と銅の合金では余り変化しない傾向にある。摺動
速度の大きい銀めっきの接触子の場合、接触子同士が当
たったときの荷重により銀めっきの剥離が生じるためで
ある。これに対して、摺動速度の大きい銀と銅の合金の
接触子の場合、合金層の硬度および地金との付着強度が
高いことにより、剥離や摩耗が生じ難いためである。FIG. 3 is a graph showing the relationship between the contact opening / closing speed and the contact wear amount. The curve A shows the case of silver plating (thickness 50 μm) as in the conventional case, and the curve B shows an example of an alloy of silver and copper. The amount of wear per 100 times of closing and closing is compared. The unit PU on the vertical axis means that the former amount of wear at low speed is expressed as 1.
As can be seen from FIG. 3, when the sliding speed of the contact exceeds 2 m / s, the amount of wear tends to increase significantly with silver plating, and the amount of wear tends to change little with alloys of silver and copper. This is because, in the case of silver-plated contacts having a high sliding speed, the silver plating is peeled off due to the load when the contacts hit each other. On the other hand, in the case of a silver-copper alloy contactor having a high sliding speed, peeling and abrasion are less likely to occur due to the hardness of the alloy layer and the high adhesion strength with the base metal.
【００１３】図１において、可動接触子２の表面層２ｂ
はイオンクラスタビーム法により形成されるが、加工済
みの銅合金の表面に薄い合金層を形成するには最も適し
た方法であり、他の方法では面精度の良い銀と銅の合金
層を形成することは困難である。面精度の良い銀と銅の
合金層の形成は、高真空中でイオン化した銀を高速で銅
合金表面に当てるイオンクラスタビーム法の特に優れた
効果である。In FIG. 1, the surface layer 2b of the movable contact 2 is shown.
Is formed by the ion cluster beam method, but it is the most suitable method for forming a thin alloy layer on the surface of a processed copper alloy, and other methods form a silver-copper alloy layer with good surface accuracy. Is difficult to do. The formation of a silver-copper alloy layer with good surface accuracy is a particularly excellent effect of the ion cluster beam method in which silver ionized in a high vacuum is applied to the copper alloy surface at high speed.
【００１４】図１では、ガス絶縁開閉機器として断路器
の事例で示したが、遮断器にも適用できる。遮断器は、
開閉速度２〜２０ｍ/ｓで用いられているが、このよう
に開閉速度がより大幅に大きい遮断器の場合には、図３
に示すように摩耗粉の発生量が、従来と比べて大幅に減
少し、ガス絶縁開閉機器の絶縁信頼性向上および保守費
用低減の面ではさらに効果的になる。また、ガス絶縁の
接地開閉器等の他のガス絶縁開閉機器の場合でも同様の
効果が得られる。In FIG. 1, a disconnector is shown as an example of the gas-insulated switchgear, but it can also be applied to a circuit breaker. Circuit breaker
Although it is used at a switching speed of 2 to 20 m / s, in the case of a circuit breaker with a significantly higher switching speed, as shown in FIG.
As shown in (1), the amount of abrasion powder generated is greatly reduced compared to the conventional one, and it becomes more effective in terms of improving the insulation reliability of the gas-insulated switchgear and reducing the maintenance cost. The same effect can be obtained in the case of other gas-insulated switchgear such as a gas-insulated ground switch.
【００１５】図２において、表面層２ｂ、３ｂの厚さは
０．５〜１０μｍと薄いが、摩耗量が少ないので、例え
ば数千回以上の多数回動作後でも地金２ａ、３ａが露出
することなく、長期にわたり銀成分による低接触抵抗を
維持できる。図２の表面層２ｂ、３ｂの厚さは部分的に
少し厚く形成されても、支障なく同様の効果が得られ
る。また、図１に示したものは、可動接触子２および固
定接触子３の両方に表面層が形成されているが、片方で
も若干摩耗量は増えるもののほぼ片方分相当の同様の効
果が得られる。さらに、表面層２ｂ、３ｂの成分が、地
金２ａ、３ａ側から表面に向かって銀の比率が増加する
ように、表面層２ｂ、３ｂを傾斜合金層としてもよい。
これにより表面層２ｂ、３ｂと地金２ａ、３ａとの密着
度が高くなる。In FIG. 2, the thickness of the surface layers 2b and 3b is as thin as 0.5 to 10 μm, but since the amount of wear is small, the bare metals 2a and 3a are exposed even after a large number of operations, for example, several thousand times or more. The low contact resistance due to the silver component can be maintained for a long period of time. Even if the surface layers 2b and 3b shown in FIG. 2 are partially thickened, the same effect can be obtained without any trouble. In addition, although the surface layer is formed on both the movable contact 2 and the fixed contact 3 in the structure shown in FIG. 1, even if one side has a slightly increased amount of wear, a similar effect equivalent to that of one side can be obtained. . Further, the surface layers 2b, 3b may be made to be a graded alloy layer so that the components of the surface layers 2b, 3b increase the ratio of silver from the side of the metal 2a, 3a toward the surface.
As a result, the degree of adhesion between the surface layers 2b and 3b and the base metals 2a and 3a is increased.
【００１６】実施の形態２．以下、この発明の他の実施
の形態について説明する。図４は本実施の形態における
ガス絶縁開閉機器である断路器の可動接触子の断面図で
ある。図において、２ｃは表面層２ｂ上に形成された保
護層である銀めっき層で、厚さが５〜２０μｍになって
いる。その他は実施の形態１の場合と同様であるので説
明を省略する。Embodiment 2. Hereinafter, another embodiment of the present invention will be described. FIG. 4 is a cross-sectional view of the movable contactor of the disconnector which is the gas-insulated switchgear according to the present embodiment. In the figure, 2c is a silver plating layer which is a protective layer formed on the surface layer 2b and has a thickness of 5 to 20 μm. Others are the same as in the case of the first embodiment, and therefore description thereof will be omitted.
【００１７】図４に示した可動接触子２の製造方法は、
図２の場合と同様に銅合金の地金２ａの表面にイオンク
ラスタビーム法により銀の微粒子を高真空中で電気的に
加速して高速で当て、その表面に地金２ａと銀との合金
層を厚さ０．５〜１０μｍに形成して表面層２ｂとな
し、さらに表面層２ｂ上に従来と同様の銀めっき層２ｃ
を５〜２０μｍと薄く施したものである。地金２ａと銀
との１０μｍ以下の合金の表面層２ｂは、取り扱いによ
っては軽い傷が付いて部分的に地金２ａが表面に露出す
る。気中で長期保管する場合、銅の酸化物或いは銅の硫
化物が生じて接触抵抗が増加することがあり、この酸化
或いは硫化を防止するために、表面を保護する薄い銀め
っき層２ｃが設けられている。この銀めっき層２ｃは、
従来の銀めっき層の膜厚５０〜２００μｍと比べて、５
〜２０μｍと薄いため、多数回動作により摩耗や剥離が
生じても、２０μｍ以下の微細な銀粉となり、ガス絶縁
開閉機器の絶縁にあまり影響しない。銀めっき層２ｃが
摩耗してしまった後は、実施の形態１の場合と同様に作
用する。従って、薄い銀めっきを施すことにより、ガス
絶縁電気機器の長期的信頼性向上の面で効果を有してい
る。保護層２ｃの厚さを５〜２０μｍとしたのは、厚す
ぎると銀摩耗粉が大きくなって絶縁性能に悪影響を及ぼ
し、逆に薄すぎると保護層としての役割を果たせないか
らである。なお、上記では銀めっき層２ｃを、可動接触
子２の表面層２ｂ上に形成したが、固定接触子の表面層
上に形成してもよいし、その両方に形成してもよい。The manufacturing method of the movable contactor 2 shown in FIG.
As in the case of FIG. 2, fine silver particles are electrically accelerated in a high vacuum and applied at high speed to the surface of the copper alloy ingot 2a by the ion cluster beam method, and the alloy of the ingot 2a and silver is applied to the surface. A layer having a thickness of 0.5 to 10 μm is formed as a surface layer 2b, and a silver plating layer 2c similar to the conventional one is formed on the surface layer 2b.
Is as thin as 5 to 20 μm. The surface layer 2b made of an alloy of the metal 2a and silver having a thickness of 10 μm or less is slightly scratched depending on the handling, and the metal 2a is partially exposed on the surface. When stored for a long time in the air, a copper oxide or a copper sulfide may be generated to increase the contact resistance. In order to prevent this oxidation or sulfidation, a thin silver plating layer 2c for protecting the surface is provided. Has been. This silver plating layer 2c is
Compared with the conventional film thickness of the silver plating layer of 50 to 200 μm, 5
Since the thickness is as thin as ˜20 μm, even if abrasion or peeling occurs due to a large number of operations, it becomes fine silver powder of 20 μm or less, and does not affect the insulation of the gas insulated switchgear so much. After the silver plating layer 2c is worn, it operates in the same manner as in the first embodiment. Therefore, by applying thin silver plating, it is effective in improving the long-term reliability of gas-insulated electrical equipment. The thickness of the protective layer 2c is set to 5 to 20 μm because if it is too thick, the silver abrasion powder becomes large and adversely affects the insulation performance, and if it is too thin, it cannot serve as a protective layer. Although the silver plating layer 2c is formed on the surface layer 2b of the movable contact 2 in the above, it may be formed on the surface layer of the fixed contact or on both of them.
【００１８】実施の形態３．以下、この発明のさらに他
の実施の形態について説明する。図５は本実施の形態に
おけるガス絶縁開閉機器である断路器の可動接触子の断
面図である。表面層２ｂは、可動接触子２の先端部分と
これに続く一部分の表面のみに形成されている。その他
は実施の形態１の場合と同様であるので説明を省略す
る。図５の可動接触子２の場合、イオンクラスタビーム
法により部分的に表面層２ｂを形成していて、表面層２
ｂの面積が図２場合より大幅に小さいため、図２の可動
接触子２より製造コストを大幅に低減でき、経済性を向
上させることができる。Embodiment 3. Hereinafter, still another embodiment of the present invention will be described. FIG. 5 is a cross-sectional view of the movable contactor of the disconnector which is the gas-insulated switchgear according to the present embodiment. The surface layer 2b is formed only on the front end portion of the movable contactor 2 and a part of the surface subsequent thereto. Others are the same as in the case of the first embodiment, and therefore description thereof will be omitted. In the case of the movable contactor 2 of FIG. 5, the surface layer 2b is partially formed by the ion cluster beam method.
Since the area of b is significantly smaller than that in the case of FIG. 2, the manufacturing cost can be greatly reduced and the economical efficiency can be improved as compared with the movable contactor 2 of FIG.
【００１９】[0019]
【発明の効果】以上のように、この発明の請求項１に係
るガス絶縁開閉機器によれば、開閉接触子の地金の表面
に、地金と銀の合金からなる表面層を形成したので、開
閉接触子表面の硬度が高くなって、両接触子の摺動によ
る摩耗粉が生じ難く、これによりガス絶縁開閉機器の絶
縁信頼性が向上し、保守費用が低減するという効果が得
られる。As described above, according to the gas-insulated switchgear according to claim 1 of the present invention, the surface layer made of an alloy of metal and silver is formed on the surface of the metal of the switching contact. Further, the hardness of the surface of the switching contact becomes high, and abrasion powder due to the sliding of both contacts is less likely to occur, which improves the insulation reliability of the gas-insulated switchgear and reduces the maintenance cost.
【００２０】また、請求項２に係るガス絶縁開閉機器に
よれば、開閉接触子の表面層上に銀めっきによる保護層
を形成したので、保管中に表面を保護し、銅の酸化、硫
化を防止する。また、請求項３に係るガス絶縁開閉機器
によれば、開閉速度が２〜２０ｍ/ｓと高速のものに適
用したので、開閉接触子の摩耗量を従来のものに比べて
大幅に低減できる。また、請求項４に係るガス絶縁開閉
機器によれば、表面層の成分が地金側から表面に向かっ
て銀の比率が増加するようにしたので、表面層と地金と
の密着度が高くなる。Further, according to the gas-insulated switchgear according to the second aspect, since the protective layer formed by silver plating is formed on the surface layer of the switching contact, the surface is protected during storage and copper is not oxidized or sulfurized. To prevent. Further, according to the gas-insulated switchgear according to the third aspect, since it is applied to a high-speed switch having an opening / closing speed of 2 to 20 m / s, the wear amount of the opening / closing contact can be significantly reduced as compared with the conventional one. Further, according to the gas-insulated switchgear according to claim 4, since the component of the surface layer is such that the ratio of silver increases from the metal side toward the surface, the degree of adhesion between the surface layer and the metal is high. Become.
【図１】 この発明の実施の形態１における断路器の断
面図である。FIG. 1 is a sectional view of a disconnector according to a first embodiment of the present invention.
【図２】 図１の断路器の可動接触子の断面図である。FIG. 2 is a cross-sectional view of a movable contactor of the disconnector of FIG.
【図３】 この発明のガス絶縁開閉装置の可動接触子の
開閉速度と摩耗量の関係を示すグラフである。FIG. 3 is a graph showing the relationship between the amount of wear and the opening / closing speed of the movable contact of the gas insulated switchgear according to the present invention.
【図４】 この発明の実施の形態２における断路器の可
動接触子の断面図である。FIG. 4 is a sectional view of a movable contactor of a disconnector according to Embodiment 2 of the present invention.
【図５】 この発明の実施の形態３における断路器の可
動接触子の断面図である。FIG. 5 is a sectional view of a movable contactor of a disconnector according to a third embodiment of the present invention.
【図６】 従来の開閉装置の開閉接触子を示す断面図で
ある。FIG. 6 is a sectional view showing an opening / closing contact of a conventional opening / closing device.
２ 可動接触子、２ａ 可動接触子の地金、２ｂ 可動
接触子の表面層、３ 固定接触子、３ａ 固定接触子の
地金、３ｂ 固定接触子の表面層、２ｃ 銀めっき層。2 movable contactor, 2a ingot of movable contactor, 2b surface layer of movable contactor, 3 fixed contactor, 3a ingot of fixed contactor, 3b surface layer of fixed contactor, 2c silver plating layer.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01H 1/02 H01H 1/38 H02B 13/02 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) H01H 1/02 H01H 1/38 H02B 13/02
Claims (4)
能な２つの開閉接触子を装着し、絶縁ガスを封入したガ
ス絶縁開閉機器において、上記開閉接触子の地金を銅ま
たは銅合金で形成し、上記開閉接触子の少なくとも一方
の地金の表面に、外側から銀成分を導入することにより
該地金と銀の合金からなる厚さ０.５〜１０μｍの表面
層を形成して、この表面層上で上記開閉接触子が摺動す
るようにしたことを特徴とするガス絶縁開閉機器。1. A gas-insulated switchgear in which two opening / closing contacts which can be slidably contacted and separated from each other are mounted in a metal container, and an insulating gas is enclosed in the metal container. By forming an alloy and introducing a silver component from the outside onto the surface of at least one of the open and closed contacts
To form a surface layer having a thickness of 0.5~10μm made of the base metal and silver alloy, gas insulated switchgear, characterized in that the opening and closing contacts in the surface layer was made to slide.
層からなる保護層を形成したことを特徴とする請求項１
記載のガス絶縁開閉機器。2. A protective layer made of a silver-plated layer having a thickness of 5 to 20 μm is formed on the surface layer.
Gas-insulated switchgear described.
であることを特徴とする請求項１または請求項２記載の
ガス絶縁開閉機器。3. The opening / closing speed of the opening / closing contactor is 2 to 20 m / s.
The gas-insulated switchgear according to claim 1 or 2, wherein
って銀の比率が増加するようにしたことを特徴とする請
求項１から請求項３のいずれかに記載のガス絶縁開閉機
器。4. The gas-insulated switchgear according to claim 1, wherein the component of the surface layer is such that the proportion of silver increases from the metal side toward the surface. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17351399A JP3455471B2 (en) | 1999-06-21 | 1999-06-21 | Gas insulated switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17351399A JP3455471B2 (en) | 1999-06-21 | 1999-06-21 | Gas insulated switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001006468A JP2001006468A (en) | 2001-01-12 |
| JP3455471B2 true JP3455471B2 (en) | 2003-10-14 |
Family
ID=15961929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17351399A Expired - Fee Related JP3455471B2 (en) | 1999-06-21 | 1999-06-21 | Gas insulated switchgear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3455471B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5306242B2 (en) * | 2010-01-12 | 2013-10-02 | 株式会社東芝 | Gas insulated switchgear |
| JP2016012388A (en) * | 2012-09-12 | 2016-01-21 | 株式会社日立製作所 | Gas-insulation opening/closing equipment |
| CN113990692B (en) * | 2021-10-28 | 2023-08-01 | 清研特材科技(洛阳)有限公司 | Manufacturing method of high-strength wear-resistant corrosion-resistant contact |
| CN117995570A (en) * | 2022-10-28 | 2024-05-07 | 温州泰钰新材料科技有限公司 | Electrical contact conductor |
-
1999
- 1999-06-21 JP JP17351399A patent/JP3455471B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001006468A (en) | 2001-01-12 |
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