JPH0638140U - Airtight structure of the shaft penetration part of the gas switch - Google Patents
Airtight structure of the shaft penetration part of the gas switchInfo
- Publication number
- JPH0638140U JPH0638140U JP7413592U JP7413592U JPH0638140U JP H0638140 U JPH0638140 U JP H0638140U JP 7413592 U JP7413592 U JP 7413592U JP 7413592 U JP7413592 U JP 7413592U JP H0638140 U JPH0638140 U JP H0638140U
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- JP
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- Prior art keywords
- case
- resistance
- ring
- shaft
- gas
- Prior art date
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
(57)【要約】
【目的】 操作ハンドルの操作軸や指針の回転軸はケー
スに対し貫通した状態になっているとともに、かかる軸
貫通部の気密の保持は２重のＯリングによって行われて
いるが、従来のものは特に材質的にみて長期的信頼性の
点で不十分であった。本考案はかかる点を解決するため
のものである。
【構成】 ２重Ｏリングによる軸貫通部の気密構造にお
いて、ケース２を貫通する操作軸あるいは回転軸にはＳ
Ｆ6 ガス３を充填したケース２の内側に位置して、耐ガ
ス透過性、耐摩耗性を有するフッ素ゴムのＯリング８
０、８２を、またケース２の外側に位置して耐水性、耐
オゾン性、耐候性を有するＥＰＭゴムないしはＥＰＤＭ
ゴムのＯリング８１、８３を嵌装したため、軸貫通部に
おける長期気密性を一段と高めることができる。
(57) [Summary] [Purpose] The operating shaft of the operating handle and the rotating shaft of the pointer are in a state of penetrating the case, and the airtightness of the shaft penetrating portion is maintained by the double O-ring. However, the conventional ones were insufficient in terms of long-term reliability, especially in terms of material. The present invention solves this problem. [Structure] In an airtight structure of a shaft penetrating portion formed by a double O-ring, an S or S axis is used as an operating shaft or a rotating shaft penetrating the case 2.
Located inside the case 2 filled with F 6 gas, a fluororubber O-ring 8 having gas permeation resistance and abrasion resistance
0, 82 and EPM rubber or EPDM located outside the case 2 and having water resistance, ozone resistance and weather resistance
Since the rubber O-rings 81 and 83 are fitted, the long-term airtightness in the shaft penetrating portion can be further enhanced.
Description
【０００１】[0001]
本考案は高圧配電線路において使用されるガス開閉器の特にケースに対する２ 重Ｏリングによる軸貫通部の気密構造の改良に関するものである。 The present invention relates to an improvement of an airtight structure of a shaft penetrating portion of a gas switch used in a high-voltage power distribution line, particularly to a case by a double O-ring.
【０００２】[0002]
この種ガス開閉器においては、気密保持状態のケースに対して同ケースを貫通 するハンドル軸や指針軸等の各種軸についてもガスシール構造になっている。 In this kind of gas switch, various shafts such as a handle shaft and a pointer shaft that penetrate the case in the airtight state are also gas-sealed.
【０００３】 ところで従来においては、ケースを貫通する操作軸や回転軸等に複数（２重） のＯリングを介在してケースとの間の気密を保持するにようにしているが、かか る場合、外気にさらされるケース外側に位置するＯリングとＳＦ6 ガス３が充填 されたケース内側に位置するＯリングとが大抵は、同一材質のものを使用してい る。By the way, conventionally, a plurality of (double) O-rings are interposed on an operation shaft, a rotation shaft, etc. penetrating the case so as to maintain airtightness with the case. In this case, the O-ring located outside the case exposed to the outside air and the O-ring located inside the case filled with SF 6 gas 3 are mostly made of the same material.
【０００４】[0004]
前記従来のように２重のＯリングを共に同一材質で形成したものにおいては、 ガスの透過量が大きくなったり、温度変化に伴って所定の弾性が維持できずにガ スを漏洩させたり、また外部環境におかされたり、絶縁劣化したりさらには機械 的な摩耗により破損したりすることがある等まだ十分に長期信頼性が得られてい なかった。 In the case where the double O-rings are both formed of the same material as in the conventional case, the amount of gas permeation becomes large, the predetermined elasticity cannot be maintained due to the temperature change, and the gas leaks. In addition, it has not been able to obtain sufficient long-term reliability because it may be exposed to the external environment, its insulation may deteriorate, or it may be damaged by mechanical wear.
【０００５】[0005]
本考案は上記問題を解決するためのもので、ケース（２）内にＳＦ6 ガス等の 消孤性ガスを充填して気密保持するとともに、操作機構等の軸をケース（２）の 壁を内外方向に貫通して備え、同軸に、その内外方向に位置して、Ｏリングを２ 重に嵌装し、軸貫通部におけるケースの気密が保持されるようにしたものにおい て、上記２重のＯリングにおけるケース内側に位置するＯリングを耐ガス透過性 、耐摩耗性、耐熱性を有するフッ素ゴムとし、またケース外側に位置するＯリン グを耐候性、耐トラッキング性、耐水性、耐オゾン性を有するＥＰＭゴムないし はＥＰＤＭゴムとしたことを特徴とするガス開閉器の軸貫通部の気密構造を提案 するものである。The present invention is intended to solve the above-mentioned problems. The case (2) is filled with an insulative gas such as SF 6 gas to maintain airtightness, and the shaft of the operating mechanism is attached to the wall of the case (2). In the case where the case is provided so that it penetrates in the inside / outside direction, coaxially located in the inside / outside direction, and the O-ring is double-fitted to maintain the airtightness of the case at the shaft penetrating part, Of the O-rings, the O-ring located inside the case is made of fluororubber having gas permeability resistance, wear resistance, and heat resistance, and the O-ring located outside the case is weatherproof, tracking resistance, water resistance, and resistance. The present invention proposes an airtight structure of a shaft penetrating portion of a gas switch characterized by using EPM rubber or EPDM rubber having ozone property.
【０００６】[0006]
以下、本考案の実施例を図面に基づき説明する。 １はバット接点（電極）からなるガス開閉器であり、また早切りによって電極 間で発生するアークを引き延し消孤するため、特別な消孤装置を備えていない。 An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 is a gas switch consisting of a butt contact (electrode), and it does not have a special arc-extinguishing device because it stretches and extinguishes the arc generated between the electrodes due to early cutting.
【０００７】 ２はステンレスなどからなる気密構造のケースであり、ケース内にはＳＦ6 ガ ス３が 1.2kg／cm2 〜1.6 kg／cm2 の所定の圧力に充填されている。４はケース の側壁２ａに対し貫装した負荷側のブッシングであり、ケース２に対して気密保 持された状態で取り付けられている。Reference numeral 2 denotes an airtight case made of stainless steel or the like, and SF 6 gas 3 is filled in the case at a predetermined pressure of 1.2 kg / cm 2 to 1.6 kg / cm 2 . Reference numeral 4 denotes a load-side bushing that penetrates the side wall 2a of the case, and is attached to the case 2 in an airtight manner.
【０００８】 ５は磁器製の碍管、６は碍管５の鍔部５ａを押さえ金具７を介してケースの外 面２ｂに押圧固定して同管５を取付けるためのボルト、８はナット、９は鍔部５ ａとケース２の外面２ｂ間に介在したパッキン、１０は同じくケースの外面２ｂ の収納部２ｃと鍔部５ａ間に介在したＯリング、１１はブッシング保護用のガー ド金具、１２はケース内に位置する碍管の外周に嵌装した地絡電流検出用の変流 器であり、支持金具１３によりケースの内面側にボルト１４、ナット１５により 止着されている。なお、変流器１２は地絡電流を検出した場合にロック状態にあ る後述の操作機構に対しトリップ指令を与えるためのものである。１６は支持金 具１３の当接部１３ａに装着したゴムなどからなる絶縁チューブを示す。Reference numeral 5 is a porcelain porcelain insulator tube, 6 is a bolt for attaching the flange portion 5 a of the porcelain insulator tube 5 to the outer surface 2 b of the case by pressing it with a metal fitting 7, and 8 is a nut. A packing interposed between the collar portion 5a and the outer surface 2b of the case 2, 10 is an O-ring also interposed between the housing portion 2c of the outer surface 2b of the case and the collar portion 5a, 11 is a guard metal fitting for bushing, and 12 is This is a current transformer for detecting a ground fault current fitted on the outer circumference of the porcelain bushing located in the case, and is fixed to the inner surface side of the case by a support metal fitting 13 by bolts 14 and nuts 15. The current transformer 12 is for giving a trip command to an operating mechanism, which will be described later, in a locked state when a ground fault current is detected. Reference numeral 16 denotes an insulating tube made of rubber or the like attached to the abutting portion 13a of the supporting metal member 13.
【０００９】 また１７は碍管５の貫通孔５ｂに貫挿してなる中心導体、１８は中心導体の鍔 １７ａに設けた収納溝１７ｂに収納され、さらに碍管の外段部５ｃに対して密着 したＯリング、１９は中心導体１７に嵌装した略小判形に形成した回り止め金具 であり同金具１９は、中心導体１７に対し相互に回転不能に嵌合すると共にさら に碍管５の内段部の凹み５ｈにその凸部１９ａを回動不能に没入している。Reference numeral 17 designates a central conductor which is inserted through the through hole 5b of the porcelain bushing, and 18 is housed in a storage groove 17b provided in the flange 17a of the central conductor, and is further adhered to the outer step portion 5c of the porcelain bushing. The ring 19 is a substantially oval-shaped metal fitting fitted to the central conductor 17, and the metal fitting 19 is fitted to the central conductor 17 so that they cannot rotate relative to each other, and further, the inner step portion of the porcelain tube 5 is The convex portion 19a is non-rotatably immersed in the recess 5h.
【００１０】 ２０はパッキン、２１はスプリングワッシャー、２２は締付ナット、２３はシ リコーン樹脂などからなる絶縁性のシール材を示す。また２４は中心導体１７の 外部側の先端に設けた袋状の接続部１７ｄに芯線２４ａを圧着接続してなる口出 し線、２５は口出し線２４の芯線２４ａと接続部１７ｄの外周面を被覆する絶縁 性チューブ、２６は接続部１７ｄの最奥部に介入した凍結割れ防止用の緩衝ゴム 、２７はシリコーン樹脂等のシール材を示す。Reference numeral 20 is a packing, 21 is a spring washer, 22 is a tightening nut, and 23 is an insulating sealing material made of silicone resin or the like. Further, 24 is a lead wire formed by crimping and connecting a core wire 24a to a bag-shaped connecting portion 17d provided on the outer end of the center conductor 17, and 25 is a core wire 24a of the lead wire 24 and outer peripheral surfaces of the connecting portion 17d. An insulating tube to be covered, 26 is a buffer rubber for preventing freezing and cracks which intervenes in the innermost portion of the connecting portion 17d, and 27 is a sealing material such as silicone resin.
【００１１】 また２８は可撓性を有する接続導電板で、その一端２８ａが中心導体１７の内 部測端部１７ｇにネジ２９着されており、他端２８ｂが可動碍子３０にねじ３１ 着されている。同板２８は、薄板銅板を何枚も重ね合わせて作ったもので、その 両端は半田処理され、さらに該部分には取付穴２８ｃが設けられている。Reference numeral 28 denotes a flexible connecting conductive plate, one end 28 a of which is attached to the inner measuring end portion 17 g of the center conductor 17 with a screw 29, and the other end 28 b of which is attached to a movable insulator 30 with a screw 31. ing. The plate 28 is made by stacking a number of thin copper plates on each other, and both ends thereof are soldered, and mounting holes 28c are provided in the portions.
【００１２】 ３３は接続導電板の外周面を被覆するためのゴムチューブである。 ３０はその上面３０ａと下面３０ｂに袋ナットをインサートしてなるエポキシ 樹脂等からなる外形が略四角形の可動碍子であり、操作機構６０と連結する同じ く駆動フレーム４６に一体的にネジ３２着されていて、開閉時に操作ハンドル６ ２を操作すると操作機構６０を介して駆動板３４の回転支持軸３５が回転し、そ れに伴って可動碍子３０さらには同碍子と一体の可動電極５０が同軸３５を中心 に時計あるいは反時計方向に回転するようになっている。Reference numeral 33 is a rubber tube for covering the outer peripheral surface of the connection conductive plate. Reference numeral 30 denotes a movable insulator made of epoxy resin or the like having cap nuts inserted into its upper surface 30a and lower surface 30b and having a substantially rectangular outer shape. The movable insulator 30 is connected to the operation mechanism 60 and is integrally screwed to the drive frame 46 by the screw 32. However, when the operation handle 62 is operated during opening / closing, the rotary support shaft 35 of the drive plate 34 rotates via the operation mechanism 60, and the movable insulator 30 and the movable electrode 50 integrated with the insulator are coaxial with it. It is designed to rotate clockwise or counterclockwise around 35.
【００１３】 ３６は接続導電板２８の上面（内面）２８ｇ側に重合配設した状態でその一端 ３６ａを接続導電板２８と共に可動碍子３０にネジ３１着した中間電極板であり 、さらに中間電極板３６の他端３６ｂにはその上面３６ｃ側に重合して可動電極 板３７の一端３７ａがガイドピン３８により連結接続されている。４０は断面が コ字形のガイド金具であり、可動電極板３７の上面３７ｃ側から同板３７の上面 ３７ｃおよび両側面３７ｍと中間電極板３６の両側面３６ｍを挟むようにして上 記のピン３８により連結されている。Reference numeral 36 denotes an intermediate electrode plate in which one end 36 a of the connection conductive plate 28 is placed on the upper surface (inner surface) 28 g side of the connection conductive plate 28 and is screwed to the movable insulator 30 together with the connection conductive plate 28 by screws 31. One end 37a of the movable electrode plate 37, which overlaps with the upper surface 36c of the other end 36b of 36, is connected and connected by a guide pin 38. Reference numeral 40 denotes a guide fitting having a U-shaped cross section, which is connected from the upper surface 37c side of the movable electrode plate 37 so as to sandwich the upper surface 37c and both side surfaces 37m of the movable electrode plate 37 and both side surfaces 36m of the intermediate electrode plate 36 by the pin 38 described above. Has been done.
【００１４】 なお、上記のガイドピン３８は中間電極板３６の連結穴３６ｎと可動電極板３ ７の連結穴３７ｎとガイド金具４０の連結穴４０ｎの３者を貫通して、これらを 軸着するもので、さらに同ピン３８には中間電極板３６の下面３６ｄとピン３８ の下端側に止着されたストッパー４１、４２間に介在するコイルバネ４３が圧縮 状態で捲装されており、これら３者がコイルバネ４３のバネ力により適切な接触 圧力でもって弾力的に密着している。The guide pin 38 passes through the connecting hole 36n of the intermediate electrode plate 36, the connecting hole 37n of the movable electrode plate 37, and the connecting hole 40n of the guide metal fitting 40 to pivotally mount them. Further, a coil spring 43 interposed between the lower surface 36d of the intermediate electrode plate 36 and stoppers 41 and 42 fixed to the lower end side of the pin 38 is wound around the pin 38 in a compressed state. The spring force of the coil spring 43 makes the elastic contact with an appropriate contact pressure.
【００１５】 ４７はガイドピン３８の抜止ピン、３７ｓは可動電極板３７の先端側の主接触 部、３７ｐは同接触部３７ｓに隣接し先端にロウ付けした耐弧メタルからなる補 助接触部、４８は可動電極板３７に一体的にネジ４９着された吸着片で、その断 面がコ字形で、かつ鉄片等の磁性体により形成されている。そして該吸着片４８ は可動電極板３７の主接触部３７ｓと補助接触部３７ｐとを下面３７ｄ側から包 み込むようにしてネジ着４９されており、同片の側面側に位置する吸着用の先端 ４８ａを補助接触部３７ｐの上面に比して上方に若干突出させるようにしている 。なお、上記の可動電極５０は中間電極板３６、可動電極板３７、主接触部３７ ｓ、吸着片４８等から構成されている。Reference numeral 47 is a retaining pin of the guide pin 38, 37s is a main contact portion on the tip side of the movable electrode plate 37, 37p is an auxiliary contact portion made of an arc-resistant metal brazed to the tip adjacent to the contact portion 37s, Reference numeral 48 denotes an attracting piece integrally fixed to the movable electrode plate 37 with a screw 49, the cross section of which is U-shaped and is made of a magnetic material such as an iron piece. The suction piece 48 is screwed 49 so as to enclose the main contact portion 37s and the auxiliary contact portion 37p of the movable electrode plate 37 from the lower surface 37d side, and the suction tip 48a located on the side surface side of the piece. Are projected slightly above the upper surface of the auxiliary contact portion 37p. The movable electrode 50 is composed of the intermediate electrode plate 36, the movable electrode plate 37, the main contact portion 37 s, the adsorption piece 48 and the like.
【００１６】 ５１は上記負荷側のブッシング４に対向してケースの反対側の側壁２ｄに気密 的に貫装した電源側のブッシングであり、上記負荷側のブッシング４と同様な構 造からなる。５２は碍管であり、ケース内端側には中心導体５３が突出した状態 で設けられており、その先端には固定電極５４が固設されている。Reference numeral 51 denotes a power source-side bushing that faces the load-side bushing 4 and hermetically penetrates the side wall 2 d on the opposite side of the case, and has the same structure as the load-side bushing 4. Reference numeral 52 denotes a porcelain insulator. A center conductor 53 is provided on the inner end side of the case in a protruding state, and a fixed electrode 54 is fixedly provided at the tip thereof.
【００１７】 ５５は中心導体５３にネジ着固定したナット、５６はナット５５の外側に位置 してその穴５６ａを中心導体５３に対して回動不能に嵌挿した回転防止金具、５ ７は回転防止金具５６の欠所５６ｂに対し回動不能に嵌装した補強金具、５８は 補強金具５７のさらに上側から同じく回転防止金具５６の欠所５６ｂに対し上記 補強金具５７に重ね合わせるうにして回転不能に嵌装した固定電極板であり、こ れらはスプリングワッシャー５９を介してネジ６０により締め付けられて中心導 体５３およびナット５５に接続固定されている。Reference numeral 55 denotes a nut screwed and fixed to the central conductor 53, 56 denotes an anti-rotation fitting which is located outside the nut 55 and has a hole 56a inserted into the central conductor 53 so as not to rotate. A reinforcing metal fitting 58 is fitted in a non-rotatable manner into the recess 56b of the prevention metal fitting 56, and 58 is rotated from the upper side of the reinforcing metal fitting 57 so as to overlap the above-mentioned reinforcing metal fitting 57 with respect to the recess 56b of the rotation prevention metal fitting 56. These are fixed electrode plates that are fixedly mounted, and these are fixed to the central conductor 53 and the nut 55 by being tightened by screws 60 via spring washers 59.
【００１８】 なお、上記の補強金具５７は機械的強度があり、また同時に磁性体でもある鉄 片をプレス等により略フ字形に折曲して形成されるもので、同金具５７は、銅板 からなる固定電極板５８に対しその上面５８ａ側に重合配設して同板を機械的に 補強すると同時に同板５８の両側を挟み込むように折り曲げ形成した両側の吸着 部５７ｂを下方に突出させ、これを上記可動電極側の吸着片４８の先端４８ａに 対向させている。つまり、補強金具５７は固定電極金具５８を機械的に補強する と同時に吸着片をも兼用する。The reinforcing metal member 57 has mechanical strength and is also formed by bending an iron piece that is also a magnetic material into a substantially U-shape by pressing or the like. The metal member 57 is made of a copper plate. The fixed electrode plate 58 is superposed on the upper surface 58a side thereof to mechanically reinforce the fixed plate 58, and at the same time, both sides of the plate 58 are bent so as to be sandwiched so that the adsorption portions 57b on both sides are projected downward. Is opposed to the tip 48a of the adsorption piece 48 on the movable electrode side. That is, the reinforcing metal member 57 mechanically reinforces the fixed electrode metal member 58, and at the same time, also serves as an adsorption piece.
【００１９】 また、上記の固定電極板５８も補強金具５７と同じようにプレスで略フ字形に 折り曲げ形成したもので、同板５８には上記可動電極５０の主接触部３７ｓに対 向して下方に突出する円弧状の主接触部５８ｓが形成されている。同主接触部５ ８ｓの後部に形成した凹部５８ｇには耐弧メタルからなる補助接触部５８ｐがロ ウ付けされている。上記の固定電極５４は中心導体５３の外、固定電極板５８、 回転防止金具５６等で構成されている。上記のように可動電極と固定電極が突き 合わせ接触となるものを一般にバット接点（電極）と呼んでいる。The fixed electrode plate 58 is also formed into a substantially U-shape by pressing similarly to the reinforcing metal member 57. The fixed electrode plate 58 faces the main contact portion 37s of the movable electrode 50 on the plate 58. An arcuate main contact portion 58s protruding downward is formed. An auxiliary contact portion 58p made of arc-resistant metal is attached to a recess 58g formed in the rear portion of the main contact portion 58s. The fixed electrode 54 is composed of the central conductor 53, a fixed electrode plate 58, a rotation preventing metal fitting 56, and the like. The contact between the movable electrode and the fixed electrode as described above is generally called a butt contact (electrode).
【００２０】 上記において固定電極板５４に付設した補強金具の吸着部５７ｂと可動電極側 に付設した吸着片４８は吸引力（接触圧力）が最も必要となる主接触部３７ｓと 主接触部５８ｓに位置して設けられている。In the above description, the suction portion 57b of the reinforcing metal fitting attached to the fixed electrode plate 54 and the suction piece 48 attached to the movable electrode side are connected to the main contact portion 37s and the main contact portion 58s where the suction force (contact pressure) is the most necessary. It is located and provided.
【００２１】 次に操作機構６０について説明する。６１はケース２に対して図２０に示すよ うに２重のＯリング８０、８１を介して気密的に貫通してなる操作軸、６２は操 作軸６１のケース外に位置する部分にネジ６２ａ着して取付けた操作ハンドル、 ６３は操作軸６１のケース内に位置する部分に固着した操作板、６４は一端の取 付穴６４ａを操作板６３の取付穴６３ａにピン６５に連結すると共に他端の取付 穴６４ｂを駆動板３４の取付穴３４ｃにピン６６により連結した連結金具、３４ は中心に回転支持軸３５を固着すると共に同軸３５を中心にしてその両端に取付 穴３４ｃ、３４ｄを設けた駆動板であり、上記のごとく連結金具６４に一端を連 結しさらに他端の取付穴３４ｄをバネガイド板６７に対しピン６８により連結し ている。Next, the operation mechanism 60 will be described. Reference numeral 61 denotes an operating shaft which is hermetically penetrated through the case 2 through double O-rings 80 and 81 as shown in FIG. 20, and 62 denotes a screw 62a at a portion of the operating shaft 61 located outside the case. The operation handle 63 is attached and attached, 63 is an operation plate fixed to a portion of the operation shaft 61 located in the case, and 64 is an attachment hole 64a at one end connected to the attachment hole 63a of the operation plate 63 with the pin 65 and A connecting fitting in which the end mounting hole 64b is connected to the mounting hole 34c of the drive plate 34 by a pin 66, the rotating support shaft 35 is fixed to the center, and mounting holes 34c and 34d are provided at both ends around the coaxial 35. It is a drive plate having one end connected to the connecting metal fitting 64 as described above, and the mounting hole 34d at the other end is connected to the spring guide plate 67 by a pin 68.
【００２２】 ６９は早切り用の蓄力バネ、７０は蓄力バネ６９とバネガイド板６７を支持す るためのケース内面に溶接等の手段により固着した支持軸、７１はケースの内面 に同じく溶接等により固着したストッパーであり、開閉器の開放時に上記駆動板 ３４の側端３４ｇがこれに衝突して過度の開放を規制する。69 is a power storage spring for early cutting, 70 is a support shaft fixed to the inner surface of the case for supporting the power storage spring 69 and the spring guide plate 67 by means such as welding, and 71 is also welded to the inner surface of the case. The side end 34g of the drive plate 34 collides with this when the switch is opened, and restricts excessive opening.
【００２３】 なお、上記において可動碍子３０をネジ着した駆動フレーム４６および同フレ ーム４６と一体に組み立てられた駆動板３４、７２の各々の回転支持軸３５、７ ３は操作ハンドル６２側と指針７４側のケース内面にそれぞれネジ着固定した支 持金具７６、７７に対して各々回転自在に支持されている。In the above description, the rotary support shafts 35 and 73 of the drive frame 46 to which the movable insulator 30 is screwed and the drive plates 34 and 72 integrally assembled with the frame 46 are connected to the operation handle 62 side. Each of them is rotatably supported by supporting metal fittings 76 and 77 which are screwed and fixed to the inner surface of the case on the pointer 74 side.
【００２４】 ７４は操作ハンドル側と反対側のケース外面に備えた開閉状態を表示するため の指針であり、同指針７４はケース２に対し気密的に貫通した回転軸７８に対し 同軸のケース外に位置して一体的にネジ７９着されている。Reference numeral 74 is a pointer provided on the outer surface of the case on the side opposite to the operation handle side for displaying the open / closed state. The pointer 74 is outside the case coaxial with the rotating shaft 78 penetrating the case 2 in an airtight manner. The screw 79 is integrally attached at the position.
【００２５】 なお、操作軸６１と回転軸７８のケース２に対する気密構造は次のようになっ ている。 まず操作軸６１側について図２０により説明する。The airtight structure of the operating shaft 61 and the rotating shaft 78 with respect to the case 2 is as follows. First, the operation shaft 61 side will be described with reference to FIG.
【００２６】 ８５はケース２に対し貫通固着した支持パイプであり、同パイプ８５に操作軸 ６１が回転自在に貫通している。操作軸６１の大略中央に位置する外周面６１ａ には３個の環状壁６１ｂが連続形成されており、これら環状壁間で形成する２つ の凹部６１ｃ−６１ｄには、ケース内側に位置してフッ素ゴムのＯリング８０を 嵌装し、また外側に位置してＥＰＭないしはＥＰＤＭ（エチレンプロピレンゴム ）のＯリング８１を嵌装したもので、当該軸部の気密を２重のＯリングにより保 持している。８６は環状壁６１ｂ群の両側に位置する操作軸の外周面６１ａに嵌 挿した金属製のカラーであり操作軸６１の支持パイプ８５に対する傾きを規制し ている。８７、８８は操作板６３と支持パイプ８５の端面間および操作ハンドル ６２と支持パイプ８５の端面間および操作ハンドル６２と支持パイプ８５の端面 間に介在した円板状の閉鎖板を示す。Reference numeral 85 denotes a support pipe fixed to the case 2 in a penetrating manner, and the operation shaft 61 penetrates through the pipe 85 rotatably. Three annular walls 61b are continuously formed on the outer peripheral surface 61a located substantially at the center of the operating shaft 61, and two concave portions 61c-61d formed between these annular walls are located inside the case. An O-ring 80 made of fluororubber is fitted, and an O-ring 81 made of EPM or EPDM (ethylene propylene rubber) is fitted on the outer side. The airtightness of the shaft is maintained by a double O-ring. is doing. Reference numeral 86 denotes a metal collar fitted to the outer peripheral surfaces 61a of the operation shafts located on both sides of the group of annular walls 61b, and restricts the inclination of the operation shaft 61 with respect to the support pipe 85. Reference numerals 87 and 88 denote disc-shaped closing plates interposed between the operation plate 63 and the end faces of the support pipe 85, between the operation handle 62 and the end faces of the support pipe 85, and between the operation handle 62 and the end face of the support pipe 85.
【００２７】 次に指針用の回転軸側の気密構造について図２１により説明する。 ８９はケース２に貫通固着した支持パイプであり、同パイプ８９には指針用の 回転軸７８が回転自在に貫通している。７８ｂは環状の環状壁であり、上記と同 じくＳＦ6 ガス３が充填されるケース２の内側に位置してフッ素ゴムのＯリング ８２を嵌装しさらにケース外側に位置してＥＰＭないしはＥＰＤＭのＯリング８ ３を嵌装したもので、上記操作ハンドルの操作軸６１の場合と同様に指針の回転 軸７８部においても２重のＯリングにより気密を保持している。９０は金属製の カラー、９１は閉鎖板を示す。Next, the airtight structure on the rotary shaft side for the pointer will be described with reference to FIG. Reference numeral 89 is a support pipe fixed to the case 2 in a penetrating manner, and a rotary shaft 78 for a pointer is rotatably passed through the pipe 89. Reference numeral 78b is an annular wall, which is located inside the case 2 filled with the SF 6 gas as described above and fitted with an O-ring 82 of fluororubber, and is located outside the case and is located at the EPM or EPDM. The O-ring 83 is fitted in, and as in the case of the operating shaft 61 of the operating handle, the rotary shaft 78 of the pointer is kept airtight by the double O-ring. 90 is a metal collar and 91 is a closing plate.
【００２８】 なお、上記において操作軸６１および回転軸７８部には、上記のようにケース 内側に位置してフッ素ゴムのＯリング８２をまたケース外側に位置してＥＰＭな いしはＥＰＤＭのＯリング８３を使用しているが、これは前者のフッ素ゴムＯリ ング８２がガス耐透過性と耐摩耗性、耐高温性に優れていることと、さらに後者 のＥＰＭないしはＥＰＤＭＯリング８３が、耐オゾン性、耐候性、耐低温性に優 れていることなど両者の材質上の長所をそれぞれ生かすことにより操作軸６１お よび回転軸７８の軸部における気密信頼性を一段と高めるようにしている。In the above description, the operation shaft 61 and the rotary shaft 78 are provided with a fluororubber O-ring 82 located inside the case and an EPM or EPDM O-ring located outside the case as described above. 83 is used because the former fluororubber O-ring 82 has excellent gas permeation resistance, abrasion resistance and high temperature resistance, and the latter EPM or EPDMO ring 83 has ozone resistance. The airtight reliability of the shaft portion of the operating shaft 61 and the rotating shaft 78 is further enhanced by taking advantage of the material properties of the two, such as superiority in heat resistance, weather resistance and low temperature resistance.
【００２９】 次に上記構成の開閉器の投入から開放までの動作は次の通りである。 図４及び図５は開閉器の投入と開放状態を示すもので、図４は投入状態を示し 、負荷側の口出し線２４−中心導体１７−接続導電板２８−中間電極板３６−可 動電極板３７−主接触部３７ｓ−主接触部５８ｓ−固定電極板５８−中心導体５ ３−電源側の口出し線８４の経路で通電されている。Next, the operation from closing to opening of the switch having the above configuration is as follows. 4 and 5 show the closed and opened states of the switch, and FIG. 4 shows the closed state. The lead wire 24 on the load side-the center conductor 17-the connecting conductive plate 28-the intermediate electrode plate 36-the movable electrode. The plate 37-the main contact portion 37s-the main contact portion 58s-the fixed electrode plate 58-the central conductor 53-is energized in the route of the lead wire 84 on the power supply side.
【００３０】 かかる投入状態で、操作ハンドル６２を開放操作すると、同ハンドル６２に連 結する操作機構６０を介して可動碍子３０および可動電極５０が回転支持軸３５ 、７３を中心に時計方向に回転するため、今まで接触状態にあった可動電極５０ が固定電極５４から離間して電路が開放される。When the operation handle 62 is opened in such a closed state, the movable insulator 30 and the movable electrode 50 rotate clockwise around the rotation support shafts 35 and 73 via the operation mechanism 60 linked to the handle 62. Therefore, the movable electrode 50 which has been in contact with the fixed electrode 54 is separated from the fixed electrode 54 and the electric path is opened.
【００３１】 つまり、図４の投入状態にある時は、可動電極５０の主接触部３７ｓと固定電 極５４の主接触部５８ｓ間のみが接触状態にある。そして開放操作により可動電 極が回転すると主接触部３７ｓ、５８ｓ間はスベリながら接触状態を続けさらに 補助接触部３７ｐ、５８ｐ間も接触状態となる。そしてさらに回転すると今度は 主接触部３７ｓ、５８ｓ間が離間し補助接触部３７ｐ、５８ｐ間はスベリながら 接触状態を続ける。そしてさらに回転すると最後に補助接触部３７ｐ、５８ｐ間 が離間し、両補助接触部３７ｐ、５８ｐ間にアークが発生する。発生したアーク は早切り方式の操作機構６０により両接触部３７ｐ、５８ｐ間を急激に離間する ため、それに伴ってアークは一挙にＳＦ6 ガス中で引き伸ばされて消孤され図５ のように電路は開放される。That is, in the closed state of FIG. 4, only the main contact portion 37s of the movable electrode 50 and the main contact portion 58s of the fixed electrode 54 are in contact with each other. When the movable electrode is rotated by the opening operation, the main contact portions 37s and 58s are kept in contact with each other while sliding, and the auxiliary contact portions 37p and 58p are also in contact with each other. Then, when further rotated, the main contact portions 37s and 58s are separated from each other, and the auxiliary contact portions 37p and 58p continue to be in a contact state while sliding. When further rotated, the auxiliary contact portions 37p and 58p are finally separated from each other, and an arc is generated between the auxiliary contact portions 37p and 58p. The generated arc causes the contact mechanism 37p and 58p to be rapidly separated from each other by the quick cut operation mechanism 60, so that the arc is stretched and extinguished in SF 6 gas all at once, and as shown in FIG. Is released.
【００３２】 また、投入については上記とは逆の動作になることは当然である。なお、上記 は、操作ハンドルの手動操作による開閉操作の説明であるが、これとは別に開閉 器の投入状態において、事故が発生して地絡電流が流れた場合には、この電流を 変流器１２で検出し、操作機構に対し指令を出してロックを解除（トリップ）し 、蓄力バネ６９によりただちに開閉器が開放するようになっている。In addition, it goes without saying that the operation is the reverse of the above regarding the turning on. The above is an explanation of the opening / closing operation by manual operation of the operating handle.In addition to this, when an accident occurs and a ground fault current flows when the switch is closed, this current is changed. The device 12 detects it, issues a command to the operating mechanism to release (trip) the lock, and the force accumulation spring 69 immediately opens the switch.
【００３３】[0033]
以上のように本考案はＳＦ6 ガスを充填したケースを貫通する操作軸あるいは 回転軸の２重Ｏリング構造において、直接ＳＦ6 ガスに触れるあるいは触れるお それのあるケース内側のＯリングには耐ガス透過性、耐摩耗性、耐熱性を有する フッ素ゴムを、またケース外側の位置して外部環境に影響される側には、耐候性 、耐水性、トラッキング性、絶縁性、耐熱性を有するＥＰＭゴムないしはＥＰＤ Ｍゴムを使用したことにより軸貫通部における２重Ｏリングによる気密信頼性を 一段と高めることができる。Resistance for the present invention are SF 6 in double O-ring structure of the operation shaft or rotating shaft extending through the casing filled with gas, the O-ring inside the case with it you touch or come into direct contact with SF 6 gas as described above Fluorine rubber with gas permeability, abrasion resistance, and heat resistance, and EPM with weather resistance, water resistance, tracking resistance, insulation, and heat resistance on the side outside the case that is affected by the external environment By using rubber or EPDM rubber, airtightness reliability due to the double O-ring in the shaft penetrating portion can be further enhanced.
【図１】本考案のガス開閉器の正面側から見た一部切開
した縦断面図である。FIG. 1 is a partially cutaway vertical sectional view of a gas switch of the present invention viewed from the front side.
【図２】負荷側ブッシング部の縦断面図である。FIG. 2 is a vertical sectional view of a load side bushing portion.
【図３】ガス開閉器を側面側から見た概略縦断面図であ
る。FIG. 3 is a schematic vertical cross-sectional view of the gas switch seen from the side surface side.
【図４】ガス開閉器の投入状態の電極部分である。FIG. 4 is an electrode portion in a closed state of the gas switch.
【図５】ガス開閉器の開放状態の電極部分図である。FIG. 5 is a partial view of the electrodes of the gas switch in an open state.
【図６】操作機構の要部の斜視図である。FIG. 6 is a perspective view of a main part of the operation mechanism.
【図７】可動電極を可動碍子に組付けた状態の正面図で
ある。FIG. 7 is a front view of a state in which a movable electrode is attached to a movable insulator.
【図８】図７の側面図である。FIG. 8 is a side view of FIG. 7.
【図９】図７の底面図の一部を示すものである。9 shows a part of the bottom view of FIG.
【図１０】可動電極側の一部を示す斜視図である。FIG. 10 is a perspective view showing a part of the movable electrode side.
【図１１】ガイド金具とガイドピンの組立状態を示す断
面図である。FIG. 11 is a cross-sectional view showing an assembled state of the guide fitting and the guide pin.
【図１２】固定電極側の組立状態を示す正面図である。FIG. 12 is a front view showing an assembled state on the fixed electrode side.
【図１３】固定電極板と補強金具の組立状態を示す斜視
図である。FIG. 13 is a perspective view showing an assembled state of a fixed electrode plate and a reinforcing metal member.
【図１４】固定電極板の縦断面図である。FIG. 14 is a vertical sectional view of a fixed electrode plate.
【図１５】図１４の底面図である。FIG. 15 is a bottom view of FIG.
【図１６】補強金具の正面図である。FIG. 16 is a front view of a reinforcing metal member.
【図１７】図１６の側面図である。FIG. 17 is a side view of FIG.
【図１８】回転防止金具の正面図である。FIG. 18 is a front view of a rotation prevention fitting.
【図１９】図１８の底面図である。FIG. 19 is a bottom view of FIG. 18.
【図２０】操作軸付近における縦断面図である。FIG. 20 is a vertical cross-sectional view near the operation shaft.
【図２１】指針の回転軸付近における縦断面図である。FIG. 21 is a vertical cross-sectional view near the rotation axis of the pointer.
２ ケース ３ ＳＦ6 ガス ６１ 操作軸 ７４ 指針 ７８ 回転軸 ８０，８２ 内側のＯリング ８１，８３ 外側のＯリング2 Case 3 SF 6 gas 61 Operation axis 74 Pointer 78 Rotation axis 80, 82 Inner O-ring 81, 83 Outer O-ring
Claims (1)
ガスを充填して気密保持するとともに、操作機構等の軸
をケース（２）の壁を内外方向に貫通して備え、同軸
に、その内外方向に位置して、Ｏリングを２重に嵌装
し、軸貫通部におけるケースの気密が保持されるように
したものにおいて、上記２重のＯリングにおけるケース
内側に位置するＯリングを耐ガス透過性、耐摩耗性、耐
熱性を有するフッ素ゴムとし、またケース外側に位置す
るＯリングを耐候性、耐トラッキング性、耐水性、耐オ
ゾン性を有するＥＰＭゴムないしはＥＰＤＭゴムとした
ことを特徴とするガス開閉器の軸貫通部の気密構造。1. A case (2) is filled with an insulative gas such as SF 6 gas to maintain airtightness, and a shaft for an operating mechanism is provided so as to penetrate a wall of the case (2) inward and outward, An O-ring which is coaxially positioned in the inner and outer directions thereof and which is double-fitted so as to maintain the airtightness of the case at the shaft penetrating portion is located inside the case of the double O-ring. The O-ring is made of fluororubber having gas permeation resistance, abrasion resistance and heat resistance, and the O-ring located outside the case is made of EPM rubber or EPDM rubber having weather resistance, tracking resistance, water resistance and ozone resistance. The airtight structure of the shaft penetrating part of the gas switch characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992074135U JP2596280Y2 (en) | 1992-10-23 | 1992-10-23 | Airtight structure of shaft opening of gas switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992074135U JP2596280Y2 (en) | 1992-10-23 | 1992-10-23 | Airtight structure of shaft opening of gas switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0638140U true JPH0638140U (en) | 1994-05-20 |
| JP2596280Y2 JP2596280Y2 (en) | 1999-06-07 |
Family
ID=13538444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992074135U Expired - Lifetime JP2596280Y2 (en) | 1992-10-23 | 1992-10-23 | Airtight structure of shaft opening of gas switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2596280Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008277014A (en) * | 2007-04-26 | 2008-11-13 | Toshiba Corp | Gas-blast circuit breaker and its manufacturing method |
-
1992
- 1992-10-23 JP JP1992074135U patent/JP2596280Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008277014A (en) * | 2007-04-26 | 2008-11-13 | Toshiba Corp | Gas-blast circuit breaker and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2596280Y2 (en) | 1999-06-07 |
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