JP2005176536A - Gas-insulated switching device - Google Patents

Gas-insulated switching device Download PDF

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JP2005176536A
JP2005176536A JP2003414530A JP2003414530A JP2005176536A JP 2005176536 A JP2005176536 A JP 2005176536A JP 2003414530 A JP2003414530 A JP 2003414530A JP 2003414530 A JP2003414530 A JP 2003414530A JP 2005176536 A JP2005176536 A JP 2005176536A
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contact
voltage conductor
cylindrical holder
high voltage
gas
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Ryoichi Shinohara
亮一 篠原
Jinichi Hiroya
仁一 廣谷
Kazuhiko Takahashi
和彦 高橋
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Japan AE Power Systems Corp
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Japan AE Power Systems Corp
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  • Gas-Insulated Switchgears (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas-insulated switching device, having a contact portion enabling full effects to expect on displacement in the radial direction of a high-voltage conductor with dimensions equivalent to those of the conventional ones. <P>SOLUTION: This gas-insulated switching device has a top end side internal projection 5 with a prescribed distance in a shaft direction of a sleeve-shaped holder 3, and a base portion side internal projection 6. The inside diameter of the base portion side internal projection 6, positioned at the base portion side, is made smaller than the inside diameter of the top end side internal projection 5 positioned at the top end side of the sleeve-shaped holder 3; and either of them is made larger than the outside diameter of a contact side edge portion 14a at a middle portion high voltage conductor 14. A gap is formed at the engagement portion, between the contact side edge portion 14a of the middle portion high voltage conductor 14 and the sleeve-shaped holder 3 in the axial direction. This gap is set at least two types of gaps in the axial direction, and contacts 4a, 4b, 4c, made by a plurality of contact pieces having a coil-typed spring action, are respectively accommodated in the respective ring-shaped accommodation portions 3a, 3b, 3c. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、絶縁媒体を封入した容器内にそれから電気的に絶縁して高電圧導体を支持して構成したガス絶縁開閉装置に関する。   The present invention relates to a gas-insulated switchgear constituted by supporting a high-voltage conductor by electrically insulating it in a container enclosing an insulating medium.

複数の回線が接続されるような規模の大きなガス絶縁開閉装置においては、機器間の寸法公差等によって生じる寸法ずれの調整や、材料の熱伸縮による変位および機器が設置される基礎問の不均一な変位を吸収するため、変位吸収部を構成するか機器を変位に耐えられる構造とするのが一般的である。変位吸収部は、通常ベローズなどの伸縮継手を用いて容器を構成し、またこの伸縮継手内の高電圧導体にはチューリップ形コンタクトによる接触部を設けている（例えば、特許文献１および特許文献２参照）。このチューリップ形コンタクトは、一方の高電圧導体の端部外周に複数の接触子片をほぼ等間隔に配置し、その外周部からリング状のばねを配置して構成している。
特開平１−２６８４１３号公報 特開平８−３３１６８号公報 In large-scale gas-insulated switchgear where multiple lines are connected, adjustment of dimensional deviation caused by dimensional tolerances between devices, displacement due to thermal expansion and contraction of materials, and non-uniformity of basic issues on which devices are installed In order to absorb a large amount of displacement, it is common to construct a displacement absorbing portion or to have a structure that can withstand the displacement of the device. The displacement absorbing portion normally forms a container using an expansion joint such as a bellows, and a high voltage conductor in the expansion joint is provided with a contact portion by a tulip contact (for example, Patent Document 1 and Patent Document 2). reference). This tulip-shaped contact is configured by arranging a plurality of contact pieces on the outer periphery of the end of one high-voltage conductor at substantially equal intervals and arranging a ring-shaped spring from the outer periphery.
JP-A-1-268413 JP-A-8-33168

しかしながら、従来のガス絶縁開閉装置は、変位吸収部に伸縮継手とチューリップ形コンタクトを用いているが、特にチューリップ形コンタクトによる変位吸収量は、両側の高電圧導体の軸方向に対しては比較的大きな変位量を吸収することができるが、同導体の径方向の変位に対しては十分な効果を期待することができなかった。従って、所望の変位量を得ようとすると、径方向に大きな接触子となってしまい、対容器との絶縁上、容器径を大きくしてガス絶縁開閉装置を大型化してしてしまう。   However, the conventional gas-insulated switchgear uses an expansion joint and a tulip-shaped contact for the displacement absorbing portion. In particular, the amount of displacement absorbed by the tulip-shaped contact is relatively small with respect to the axial direction of the high-voltage conductors on both sides. Although a large amount of displacement can be absorbed, a sufficient effect cannot be expected for the radial displacement of the conductor. Therefore, if a desired amount of displacement is obtained, a large contact is formed in the radial direction, and the gas insulated switchgear is enlarged by increasing the diameter of the container for insulation from the container.

本発明の目的は、従来と同等の寸法で高電圧導体の径方向の変位に対して十分な効果を期待することができるようにした接触部を有するガス絶縁開閉装置を提供することにある。   An object of the present invention is to provide a gas-insulated switchgear having a contact portion that has a size equivalent to that of the prior art and can be expected to have a sufficient effect on the radial displacement of a high-voltage conductor.

本発明は上記目的を達成するために、絶縁媒体を封入した容器内に高電圧導体を前記容器から電気的に絶縁した状態で支持し、前記容器の一部に変位を吸収するための伸縮継手を用い、この伸縮継手の内部に位置する前記高電圧導体に接触子による接続部を設けたガス絶縁開閉装置において、前記接触子を介して接続する前記高電圧導体の対向部にギャップを有する嵌合部を形成し、前記ギャップは前記両高電圧導体の嵌合方向に少なくとも二種類のギャップを有するように形成し、前記嵌合部に配置して両前記高電圧導体間を電気的に接続する前記接触子として、バネアクションを有する複数の接触子片で成るコンタクトを用いたことを特徴とする。   In order to achieve the above object, the present invention supports a high-voltage conductor in a state in which an insulating medium is enclosed in a container electrically insulated from the container, and an expansion joint for absorbing displacement in a part of the container. In the gas-insulated switchgear in which a connection portion by a contact is provided on the high-voltage conductor located inside the expansion joint, a fitting having a gap is formed at a facing portion of the high-voltage conductor connected through the contact. Forming a joint portion, and forming the gap so as to have at least two kinds of gaps in the fitting direction of the two high voltage conductors, and arranging the gap in the fitting portion to electrically connect the two high voltage conductors. As the contact, the contact made of a plurality of contact pieces having a spring action is used.

また請求項２に記載の本発明は、請求項１記載のものにおいて、一方の前記高電圧導体に他方の前記高電圧導体の対向部を包囲する筒状ホルダを取り付け、この筒状ホルダと前記他方の高電圧導体との嵌合部にその嵌合方向の異なる位置に二種類のギャップを形成し、前記筒状ホルダの二種類のギャップ間に位置する部分に前記コンタクトを配置したことを特徴とする。   According to a second aspect of the present invention, in the first aspect of the present invention, the cylindrical holder surrounding the opposite portion of the other high-voltage conductor is attached to the one high-voltage conductor, and the cylindrical holder and the Two types of gaps are formed at different positions in the fitting direction in the fitting portion with the other high-voltage conductor, and the contact is arranged at a portion located between the two types of gaps of the cylindrical holder. And

さらに請求項３に記載の本発明は、請求項１記載のものにおいて、一方の前記高電圧導体に他方の前記高電圧導体の対向部を包囲する筒状ホルダを取り付け、この筒状ホルダ内に嵌合する前記他方の高電圧導体に、異なる外径の先端側と基部側を形成して前記筒状ホルダと前記他方の高電圧導体との嵌合部にその嵌合方向の異なる二種類のギャップを形成し、前記筒状ホルダの二種類のギャップ間に位置する部分に前記コンタクトを配置したことを特徴とする。   Furthermore, the present invention according to claim 3 is the one according to claim 1, wherein a cylindrical holder surrounding the opposite portion of the other high-voltage conductor is attached to one of the high-voltage conductors, Two different types of fitting directions of the cylindrical holder and the other high-voltage conductor are formed in the other high-voltage conductor to be fitted, and a distal end side and a base side of different outer diameters are formed. A gap is formed, and the contact is arranged in a portion located between two types of gaps of the cylindrical holder.

本発明によるガス絶縁開閉装置は、対向配置した高電圧導体の嵌合部に軸方向のギャップを形成し、しかも、このギャップは軸方向において少なくとも二種類のギャップとしたため、ギャップが小さい部分で高電圧導体を支持することが可能となり、結果として高電圧導体の自重や電磁力に対してその移動を抑制することができ、それによって、バネアクションを有するコンタクトの接触圧力が安定し、軸方向長を大きく増大することなく通電容量を確保することができる。その結果、この接触部の径方向寸法を大きくすることなく、従来と同一寸法諸元で通電容量および角度変位吸収量を増大させることが可能となる。   In the gas insulated switchgear according to the present invention, an axial gap is formed at the fitting portion of the high voltage conductors arranged opposite to each other, and the gap is at least two types in the axial direction. It is possible to support the voltage conductor, and as a result, it is possible to suppress the movement of the high-voltage conductor due to its own weight and electromagnetic force, thereby stabilizing the contact pressure of the contact having a spring action and the axial length. The energization capacity can be ensured without greatly increasing the. As a result, it is possible to increase the current carrying capacity and the amount of angular displacement absorption with the same dimensions as before without increasing the radial dimension of the contact portion.

また請求項２に記載の本発明によるガス絶縁開閉装置は、対向配置した高電圧導体の一方に設けた筒状ホルダによる嵌合部に軸方向のギャップを形成したため、筒状ホルダを追加するだけでギャップを簡単に形成することができ、またギャップが小さい部分で高電圧導体を簡単に支持することが可能となる。   In the gas insulated switchgear according to the second aspect of the present invention, since the gap in the axial direction is formed in the fitting portion formed by the cylindrical holder provided on one of the opposed high voltage conductors, only the cylindrical holder is added. Thus, the gap can be easily formed, and the high-voltage conductor can be easily supported in a portion where the gap is small.

さらに請求項３に記載の本発明によるガス絶縁開閉装置は、対向配置した高電圧導体の一方に設けた筒状ホルダによる嵌合部に軸方向のギャップを形成し、この二種類のギャップ間に位置する部分に前記コンタクトを配置したため、所定距離隔てた二種類のギャップにより嵌合した高電圧導体の変位を効率的吸収することができる。   Furthermore, the gas insulated switchgear according to the third aspect of the present invention forms an axial gap in a fitting portion formed by a cylindrical holder provided on one of the opposed high voltage conductors, and the gap between the two types of gaps. Since the contact is disposed in the position, the displacement of the high voltage conductor fitted by two types of gaps separated by a predetermined distance can be efficiently absorbed.

以下、本発明の実施の形態を図面に基づいて説明する。
図１は、本発明の一実施の形態によるガス絶縁開閉装置を示す平面図である。
ガス絶縁開閉装置は、鉄筋コンクリートなどで製作された強固な基礎Ａ、Ｂに埋設された埋め込みベースに溶接またはボルト等により固定され、地震や機器の開閉操作による振動に耐えるよう固定されている。基礎Ａ、Ｂは比較的小規模なものであれば一体として製作されるが、大規模な変電所の場合は施工上の問題から分割されることが多く、また既設変電所の増設や、計画の一部分のみ設置する場合は、増設分および将来分の基礎は実際に機器が据え付けられるまで施工せず、分割して施工することが一般的である。ここでは、既設の基礎Ａに隣接して増設の基礎Ｂを設け、それら両基礎Ａ、Ｂの上にガス絶縁開閉装置を構成した場合を示している。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing a gas insulated switchgear according to an embodiment of the present invention.
The gas-insulated switchgear is fixed to an embedded base embedded in a strong foundation A, B made of reinforced concrete or the like by welding or bolts, and is fixed to withstand earthquakes and vibrations caused by opening and closing operations of equipment. The foundations A and B are manufactured as a unit if they are relatively small, but in the case of large-scale substations, they are often divided due to construction problems. In the case of installing only a part of the base, it is common to divide the foundation for the extension and the future part without constructing until the equipment is actually installed. Here, a case is shown in which an additional foundation B is provided adjacent to the existing foundation A, and a gas insulated switchgear is configured on both the foundations A and B.

ガス絶縁開閉装置は、一端に気中線に接続したブッシングを有するライン側開閉装置ユニット２０と、このライン側開閉装置ユニット２０の他端に接続した母線ユニット２６と、この母線ユニット２６に一端を接続して他端をケーブルなどによって導出したフィーダ側開閉ユニット２１、２２とから成る既設分を基礎Ａ上に構成し、一端を母線ユニット２６に接続し他端を増設母線ユニット２７に接続した母線セクションユニット２３と、増設母線ユニット２７に一端を接続し他端をケーブルなどによって導出したフィーダ側開閉ユニット２４、２５とから成る増設分を基礎Ｂ上に構成している。   The gas-insulated switchgear includes a line-side switchgear unit 20 having a bushing connected to an airline at one end, a busbar unit 26 connected to the other end of the line-side switchgear unit 20, and one end to the busbar unit 26. An existing part consisting of feeder-side opening / closing units 21 and 22 connected and connected at the other end by a cable or the like is configured on the foundation A, one end connected to the bus unit 26 and the other end connected to the additional bus unit 27 An extension comprising a section unit 23 and feeder-side opening / closing units 24 and 25 each having one end connected to the extension bus unit 27 and the other end led by a cable or the like is configured on the base B.

各ユニットの構成は広く知られているので、ここではフィーダ側開閉ユニット２１についてのみ説明する。図２は、フィーダ側開閉ユニット２１の側面図である。支持部材３３によって所定の高さに支持した母線ユニット２６には縦型遮断器２８の一方の端が接続され、縦型遮断器２８の他方の端には計器用変流器２９を介してケーブルヘッド３０に接続されている。このケーブルヘッド３０からはケーブル３１が絶縁導出されると共に、ＰＤ３２などの他の機器が接続されている。   Since the configuration of each unit is widely known, only the feeder side opening / closing unit 21 will be described here. FIG. 2 is a side view of the feeder side opening / closing unit 21. One end of the vertical circuit breaker 28 is connected to the bus unit 26 supported at a predetermined height by the support member 33, and the other end of the vertical circuit breaker 28 is connected to the cable via a current transformer 29. It is connected to the head 30. A cable 31 is insulated from the cable head 30 and is connected to other devices such as a PD 32.

このようなガス絶縁開閉装置の場合、分割された基礎Ａ、Ｂ上に構成されているために、地盤の特性の違いや、地震波の伝わり方の違いによりそれぞれ相対的な変位が発生することになる。この変位はガス絶縁開閉装置の容器の長さ方向だけではなく、不等沈下による垂直方向の相対変位や振動による水平方向の相対変位が生じる。このため、一般的には基礎Ａ、Ｂの近傍に位置する例えば母線ユニット２６の途中に伸縮継手部３３を設け、この伸縮継手部３３で変位を吸収できる構造としている。   In the case of such a gas-insulated switchgear, since it is configured on the divided foundations A and B, relative displacement occurs due to the difference in the characteristics of the ground and the difference in how the seismic waves are transmitted. Become. This displacement occurs not only in the length direction of the container of the gas insulated switchgear but also in the vertical direction due to uneven settlement and in the horizontal direction due to vibration. For this reason, the expansion joint part 33 is generally provided in the middle of the bus bar unit 26 located in the vicinity of the foundations A and B, and the expansion joint part 33 can absorb the displacement.

図３は、伸縮継手部３３の断面図である。
母線ユニット２６を構成する容器８、９の対向側にそれぞれ構成したフランジ８ａ、９ａに、ベローズなどの伸縮継手容器１０の両側に形成したフランジ１０ａ、１０ｂを支持板１８、１９を介して耐気密接続して伸縮継手を構成している。支持板１８、１９にはそれぞれ絶縁スペーサ１１、１６が支持されており、この絶縁スペーサ１１、１６の中心導体にそれぞれ高電圧導体１２、１７が連結されている。両絶縁スペーサ１１、１６の中心導体の対向側には中間部高電圧導体１４が配置され、その両端が接触子１３、１５によってそれぞれ接続されている。容器８、９および伸縮継手容器１０内には、六フッ化硫黄ガスもしくはその他の絶縁性ガスなどの絶縁性媒体が封入されており、さらに絶縁スペーサ１１、１６によってこれら各容器から電気的に絶縁した状態でガス絶縁開閉装置の主回路を構成する高電圧導体１２、１７などを支持している。伸縮継手部に変位が加わった場合、容器８、９問の変位はベローズなどの伸縮継手容器１０の伸縮により吸収される。一方、高電圧導体１２、１７間の変位は接触子１３、１５で吸収しなければならない。 FIG. 3 is a cross-sectional view of the expansion joint 33.
Flanges 10a and 10b formed on both sides of the expansion joint container 10 such as bellows are formed on the opposite sides of the containers 8 and 9 constituting the bus bar unit 26 through the support plates 18 and 19, respectively. Connected to form an expansion joint. Insulating spacers 11 and 16 are supported on the support plates 18 and 19, respectively, and high voltage conductors 12 and 17 are connected to central conductors of the insulating spacers 11 and 16, respectively. An intermediate high-voltage conductor 14 is disposed on the opposite side of the central conductors of both insulating spacers 11 and 16, and both ends thereof are connected by contacts 13 and 15, respectively. The containers 8 and 9 and the expansion joint container 10 are filled with an insulating medium such as sulfur hexafluoride gas or other insulating gas, and further electrically insulated from these containers by insulating spacers 11 and 16. In this state, the high voltage conductors 12 and 17 constituting the main circuit of the gas insulated switchgear are supported. When displacement is applied to the expansion joint, the displacement of the containers 8 and 9 is absorbed by expansion and contraction of the expansion joint container 10 such as a bellows. On the other hand, the displacement between the high voltage conductors 12 and 17 must be absorbed by the contacts 13 and 15.

図４は、上述した伸縮継手における接触子１３、１５の具体的な構成を示す断面図である。
接触子１３、１５はほぼ同一構成であるから、ここでは接触子１５について説明する。絶縁スペーサ１６の中心部には高電圧導体である中心導体２０が一体的に埋め込まれており、この中心導体２０の端面に有底筒状の筒状ホルダ３を配置し、その底側を中心導体２に複数本のねじ９によって固定している。この筒状ホルダ３は、高電圧導体１２、１７と同じ所定の定格電流を流せる通電容量を持つと共に、中間部高電圧導体１４の重量や短絡あるいは地絡によって生じる電磁力に耐えうる構造となっている。 FIG. 4 is a cross-sectional view showing a specific configuration of the contacts 13 and 15 in the expansion joint described above.
Since the contacts 13 and 15 have substantially the same configuration, the contact 15 will be described here. A central conductor 20, which is a high voltage conductor, is integrally embedded in the central portion of the insulating spacer 16. A bottomed cylindrical cylindrical holder 3 is disposed on the end face of the central conductor 20, and the bottom side is centered. The conductor 2 is fixed with a plurality of screws 9. The cylindrical holder 3 has a current-carrying capacity that allows the same predetermined rated current as the high-voltage conductors 12 and 17 to flow, and has a structure that can withstand electromagnetic force generated by the weight, short circuit, or grounding of the intermediate high-voltage conductor 14. ing.

この筒状ホルダ３は、図５に示すようにその軸方向に所定距離を隔てて先端側内部突起５と、基部側内部突起６とを有している。ホルダ３の基部側に位置する基部側内部突部６の径Φ１は、筒状ホルダ３の先端側に位置する先端側内部突部５の径Φ２よりも小さくしており、ここでは基部側内部突部６が最小内径で、先端側内部突部５が最大内径となっている。しかも、いずれも中間部高電圧導体１４における接触側端部１４ａの外径より大きく、接触側端部１４ａを筒状ホルダ３内に挿入し両者を嵌合したとき、定常状態では両者間に軸方向全体をギャップが形成されて非接触状態となっている。先端側内部突部５と基部側内部突部６間に位置する筒状ホルダ３の内面には、例えば、先端側内部突部５の最小内径部と基部側内部突部６の最小内径部間を結んだ直線よりも後退した内面を有し、しかも複数のリング状収納部３ａ、３ｂ、３ｃを軸方向に離散的に形成している。   As shown in FIG. 5, the cylindrical holder 3 has a tip-side internal protrusion 5 and a base-side internal protrusion 6 with a predetermined distance therebetween in the axial direction. The diameter Φ1 of the base-side internal protrusion 6 located on the base side of the holder 3 is smaller than the diameter Φ2 of the tip-side internal protrusion 5 located on the tip side of the cylindrical holder 3. The protrusion 6 has a minimum inner diameter, and the tip side internal protrusion 5 has a maximum inner diameter. Moreover, both are larger than the outer diameter of the contact side end 14a in the intermediate high voltage conductor 14, and when the contact side end 14a is inserted into the cylindrical holder 3 and they are fitted together, in the steady state, the shaft is between them. A gap is formed in the entire direction and is in a non-contact state. The inner surface of the cylindrical holder 3 positioned between the front end side internal protrusion 5 and the base side internal protrusion 6 is, for example, between the minimum inner diameter portion of the front end side internal protrusion 5 and the minimum inner diameter portion of the base side internal protrusion 6. The ring-shaped storage portions 3a, 3b, and 3c are discretely formed in the axial direction.

各リング状収納部３ａ、３ｂ、３ｃ内にはコイル状のバネアクションを持った複数の接触片で成るコンタクト４ａ、４ｂ、４ｃがそれぞれ収納されており、これらコンタクト４ａ、４ｂ、４ｃの収納状態で、中間部高電圧導体１４の接触側端部１４ａを筒状ホルダ３内に挿入すると、各コンタクト４ａ、４ｂ、４ｃのみが接触側端部１４ａの外周面に所定の接触圧を保持しながら接触する。中間部高電圧導体１４の接触側端部１４ａと筒状ホルダ３間の通電容量は、軸方向に配置したバネアクションを持った複数の接触片で成るコンタクト４ａ、４ｂ、４ｃの数によって対応することができ、チューリップ形コンタクトの場合のように外径を大きくすることはない。   Contacts 4a, 4b, and 4c made of a plurality of contact pieces each having a coil-like spring action are housed in each of the ring-shaped storage portions 3a, 3b, and 3c. When the contact side end 14a of the intermediate high voltage conductor 14 is inserted into the cylindrical holder 3, only the contacts 4a, 4b, 4c hold a predetermined contact pressure on the outer peripheral surface of the contact side end 14a. Contact. The current-carrying capacity between the contact-side end 14a of the intermediate high-voltage conductor 14 and the cylindrical holder 3 corresponds to the number of contacts 4a, 4b, and 4c formed of a plurality of contact pieces having spring actions arranged in the axial direction. The outer diameter is not increased as in the case of a tulip contact.

このようにして中間部高電圧導体１４の接触側端部１４ａと筒状ホルダ３の嵌合部には、軸方向にギャップを形成し、しかも、このギャップは軸方向において少なくとも二種類のギャップつまり先端側内部突部５と接触側端部１４ａ間、また基部側内部突部６と接触側端部１４ａ間に形成した二種類のギャップとしたため、伸縮継手３３の変位に対応して中間部高電圧導体１４の挿入寸法は勿論のこと、その挿入角度が変化できるようになり、チューリップ形接触子を用いた場合よりも伸縮継手容器１０の変位に近い変位を吸収することができる。   In this way, a gap is formed in the axial direction between the contact side end portion 14a of the intermediate high-voltage conductor 14 and the fitting portion of the cylindrical holder 3, and this gap has at least two types of gaps in the axial direction, that is, Since there are two types of gaps formed between the tip-side inner protrusion 5 and the contact-side end 14a and between the base-side inner protrusion 6 and the contact-side end 14a, the height of the intermediate portion is increased corresponding to the displacement of the expansion joint 33. The insertion angle of the voltage conductor 14 as well as the insertion angle can be changed, and a displacement closer to the displacement of the expansion joint container 10 can be absorbed than when the tulip-shaped contactor is used.

つまり、中間部高電圧導体１４の接触側端部１４ａと筒状ホルダ３間には軸方向のギャップを形成し、しかも、このギャップは軸方向において少なくとも二種類のギャップとしたため、ギャップが小さい基部側内部突部６で接触側端部１４ａを支持することが可能となり、結果として中間部高電圧導体１４の自重や電磁力に対して中間部高電圧導体１４の移動を抑制することができる。また中間部高電圧導体１４の移動が抑制されるため、コンタクト４ａ、４ｂ、４ｃの接触圧力が安定し、軸方向長を大きく増大することなく通電容量を確保することができる。さらに、筒状ホルダ３の入口部でのギャップが大きくなっているため、挿入角度の変化に対して安定したコンタクト４ａ、４ｂ、４ｃの接触圧力が確保できる。その結果、筒状ホルダ３の寸法を大きくすることなく、同一寸法諸元で通電容量および角度変位吸収量を増大させることが可能となる。   That is, an axial gap is formed between the contact-side end portion 14a of the intermediate high-voltage conductor 14 and the cylindrical holder 3, and the gap has at least two types of gaps in the axial direction. The side inner protrusion 6 can support the contact side end 14a, and as a result, the movement of the intermediate high-voltage conductor 14 can be suppressed against the dead weight and electromagnetic force of the intermediate high-voltage conductor 14. Further, since the movement of the intermediate high-voltage conductor 14 is suppressed, the contact pressure of the contacts 4a, 4b, and 4c is stabilized, and the current carrying capacity can be ensured without greatly increasing the axial length. Furthermore, since the gap at the inlet portion of the cylindrical holder 3 is large, a stable contact pressure of the contacts 4a, 4b, and 4c can be secured against changes in the insertion angle. As a result, the energization capacity and the angular displacement absorption amount can be increased with the same dimensions without increasing the dimensions of the cylindrical holder 3.

また一方の高電圧導体である中心導体２に筒状ホルダ３を取り付け、この筒状ホルダ３によって二種類のギャップを形成するようにしたため、ギャップの形成が簡単であり、筒状ホルダ３に所定の電流通電容量を確保すれば十分の機械強度も得られて、中間部高電圧導体１４を保持することができる。また、筒状ホルダ３の内面に形成した先端側内部突部５と基部側内部突部６間にバネアクションを持った複数の接触片で成るコンタクト４ａ、４ｂ、４ｃを配置しているため、先端側内部突部５と基部側内部突部６間に所定の距離を保持して、その内径差を利用しての中間部高電圧導体１４の挿入角度の変化に対して安定した保持が可能となる。   In addition, since the cylindrical holder 3 is attached to the central conductor 2 which is one of the high-voltage conductors, and two types of gaps are formed by the cylindrical holder 3, the formation of the gap is simple, and the cylindrical holder 3 has a predetermined shape. If sufficient current carrying capacity is secured, sufficient mechanical strength can be obtained, and the intermediate high-voltage conductor 14 can be held. Further, since the contacts 4a, 4b, and 4c formed of a plurality of contact pieces having a spring action are disposed between the distal end side internal protrusion 5 and the base side internal protrusion 6 formed on the inner surface of the cylindrical holder 3, A predetermined distance is maintained between the front end side internal protrusion 5 and the base side internal protrusion 6, and stable holding is possible against changes in the insertion angle of the intermediate high voltage conductor 14 using the difference in inner diameter. It becomes.

図６は、本発明の他の実施の形態によるガス絶縁開閉装置における接触部１５を示す要部拡大断面図である。
筒状ホルダ３の内部に嵌合した中間部高電圧導体１４の接触側端部１４ａは、筒状ホルダ３内への挿入側先端より第一外径部７Ｃ、第二外径部７ｂ、第三外径部７ａを形成し、筒状ホルダ３内への挿入側先端部より順次外径を小さくしている。 FIG. 6 is an enlarged cross-sectional view showing a main part of a contact portion 15 in a gas insulated switchgear according to another embodiment of the present invention.
The contact side end 14a of the intermediate high voltage conductor 14 fitted inside the cylindrical holder 3 has a first outer diameter portion 7C, a second outer diameter portion 7b, Three outer diameter portions 7 a are formed, and the outer diameter is sequentially reduced from the distal end portion on the insertion side into the cylindrical holder 3.

この実施の形態においても、中間部高電圧導体１４の接触側端部１４ａと筒状ホルダ３間には軸方向にギャップを形成し、しかも、このギャップは軸方向において少なくとも二種類のギャップとなっているため、先の実施の形態の場合と同様に中間部高電圧導体１４の挿入角度が変化しても十分に対応することができる。しかも、筒状ホルダ３の内面と接触側端部１４ａ間に形成されるギャップは、筒状ホルダ３の先端側に位置する先端側内部突部５との間で形成されるギャップの方が、筒状ホルダ３における基部側に位置する基部側内部突部６との間で形成されるギャップよりもさらに大きくなっているため、先の実施の形態の場合よりも中間部高電圧導体１４の挿入角度が大きく変化しても十分に対応することができる。   Also in this embodiment, a gap is formed in the axial direction between the contact side end portion 14a of the intermediate high-voltage conductor 14 and the cylindrical holder 3, and the gap is at least two types of gaps in the axial direction. Therefore, as in the case of the previous embodiment, even if the insertion angle of the intermediate high-voltage conductor 14 changes, it is possible to cope with it sufficiently. Moreover, the gap formed between the inner surface of the cylindrical holder 3 and the contact-side end portion 14a is the gap formed between the front-end side internal projection 5 located on the front-end side of the cylindrical holder 3, Since the gap formed between the cylindrical holder 3 and the base-side internal protrusion 6 located on the base side is larger than that in the previous embodiment, the insertion of the intermediate high-voltage conductor 14 is greater than in the previous embodiment. Even if the angle changes greatly, it can cope sufficiently.

図７は、本発明の他の実施の形態によるガス絶縁開閉装置における接触部１５を示す要部拡大断面図である。
筒状ホルダ３の内部に嵌合した中間部高電圧導体１４の接触側端部１４ａは、筒状ホルダ３内への挿入側先端からテーパ状に順次外径を小さくしている。この実施の形態においても、中間部高電圧導体１４の接触側端部１４ａと筒状ホルダ３間にはギャップを形成し、しかも、このギャップは軸方向において少なくとも二種類のギャップとなる構成を満足しているため、先の実施の形態の場合と同様に中間部高電圧導体１４の挿入角度が変化しても十分に対応することができる。また図６に示した場合と同様に、筒状ホルダ３の内面と接触側端部１４ａ間に形成されるギャップは、筒状ホルダ３の先端側に位置する先端側内部突部５との間で形成されるギャップの方が、筒状ホルダ３における基部側に位置する基部側内部突部６との間で形成されるギャップよりもさらに大きくなっているため、先の実施の形態の場合よりも中間部高電圧導体１４の挿入角度が大きく変化しても十分に対応することができる。 FIG. 7 is an enlarged cross-sectional view showing a main part of a contact portion 15 in a gas insulated switchgear according to another embodiment of the present invention.
The contact-side end 14 a of the intermediate high-voltage conductor 14 fitted inside the cylindrical holder 3 has an outer diameter that gradually decreases in a tapered manner from the distal end on the insertion side into the cylindrical holder 3. Also in this embodiment, a gap is formed between the contact-side end 14a of the intermediate high-voltage conductor 14 and the cylindrical holder 3, and the gap satisfies at least two types of gaps in the axial direction. Therefore, as in the case of the previous embodiment, even if the insertion angle of the intermediate high-voltage conductor 14 changes, it is possible to cope with it sufficiently. Similarly to the case shown in FIG. 6, the gap formed between the inner surface of the cylindrical holder 3 and the contact-side end portion 14 a is between the front-end side internal protrusion 5 located on the front end side of the cylindrical holder 3. Is larger than the gap formed between the base-side internal protrusions 6 located on the base side of the cylindrical holder 3, and is therefore larger than that of the previous embodiment. Also, even if the insertion angle of the intermediate high-voltage conductor 14 changes greatly, it is possible to cope with it sufficiently.

本発明の他の実施の形態では、筒状ホルダ３の内面と接触側端部１４ａ間に形成されるギャップを、筒状ホルダ３の先端側に位置する先端側内部突部５との間で形成されるギャップの方が、筒状ホルダ３における基部側に位置する基部側内部突部６との間で形成されるギャップよりも小さくしたり、筒状ホルダ３の軸方向の中央部分に最小のギャップが形成されるようにしても、支点の位置が変化するだけでほぼ同様の効果を得ることができる。   In another embodiment of the present invention, a gap formed between the inner surface of the cylindrical holder 3 and the contact-side end 14 a is formed between the distal-side inner protrusion 5 positioned on the distal-end side of the cylindrical holder 3. The gap to be formed is smaller than the gap formed between the base side internal protrusions 6 located on the base side of the cylindrical holder 3, or is minimal at the axial center portion of the cylindrical holder 3. Even if the gap is formed, substantially the same effect can be obtained only by changing the position of the fulcrum.

また、本発明の他の実施の形態では、バネアクションを持った複数の接触片で成るコンタクト４ａ、４ｂ、４ｃとしてコイル状のものを用いたが、これに限らずマルチコンタクト（ソルトン社商品名）のようにほぼ三角状の接触片自体にバネアクションを持たせ、それを複数連結してリング状にした、バネアクションを持った複数の接触片で成るコンタクトを用いることもできる。   Further, in another embodiment of the present invention, the coil-shaped contacts 4a, 4b, and 4c made of a plurality of contact pieces having spring action are used. The contact made of a plurality of contact pieces having a spring action can be used in which a substantially triangular contact piece itself has a spring action as shown in FIG.

本発明の一実施の形態によるガス絶縁開閉装置を示す平面図である。It is a top view which shows the gas insulated switchgear by one embodiment of this invention. 図１に示したガス絶縁開閉装置のフィーダ側開閉ユニットを示す側面図である。It is a side view which shows the feeder side opening / closing unit of the gas insulated switchgear shown in FIG. 図１に示したガス絶縁開閉装置の伸縮継手を示す断面図である。It is sectional drawing which shows the expansion joint of the gas insulated switchgear shown in FIG. 図３に示した伸縮継手の接触子を示す拡大断面図である。It is an expanded sectional view which shows the contact of the expansion joint shown in FIG. 図４に示した接触子の筒状ホルダを示す断面図である。It is sectional drawing which shows the cylindrical holder of the contact shown in FIG. 本発明の他の実施の形態によるガス絶縁開閉装置の要部を示す断面図である。It is sectional drawing which shows the principal part of the gas insulated switchgear by other embodiment of this invention. 本発明のさらに他の実施の形態によるガス絶縁開閉装置の要部を示す断面図である。It is sectional drawing which shows the principal part of the gas insulated switchgear by other embodiment of this invention.

符号の説明Explanation of symbols

２ 中心導体
３ 筒状ホルダ
４ａ〜４ｃ コンタクト
５ 先端側内部突起
６ 基部側内部突起
１０ 伸縮継手容器
１１ 絶縁スペーサ
１３ 接触子
１４ 中間高電圧導体
１５ 接触子
2 Center conductor 3 Cylindrical holder 4a-4c Contact 5 Tip side internal protrusion 6 Base side internal protrusion 10 Expansion joint container 11 Insulating spacer 13 Contact 14 Intermediate high voltage conductor 15 Contact

Claims (3)

絶縁媒体を封入した容器内に高電圧導体を前記容器から電気的に絶縁した状態で支持し、前記容器の一部に変位を吸収するための伸縮継手を用い、この伸縮継手の内部に位置する前記高電圧導体に接触子による接続部を設けたガス絶縁開閉装置において、前記接触子を介して接続する前記高電圧導体の対向部にギャップを有する嵌合部を形成し、前記ギャップは前記両高電圧導体の嵌合方向に少なくとも二種類のギャップを有するように形成し、前記嵌合部に配置して両前記高電圧導体間を電気的に接続する前記接触子として、バネアクションを有する複数の接触子片で成るコンタクトを用いたことを特徴とするガス絶縁開閉装置。   A high-voltage conductor is supported in a state of being electrically insulated from the container in a container in which an insulating medium is enclosed, and an expansion joint for absorbing displacement is used in a part of the container, and is located inside the expansion joint. In the gas-insulated switchgear in which a contact portion by a contact is provided on the high voltage conductor, a fitting portion having a gap is formed at a facing portion of the high voltage conductor connected via the contact, and the gap is A plurality of spring action is formed as the contact that is formed so as to have at least two kinds of gaps in the fitting direction of the high-voltage conductor and is arranged in the fitting portion to electrically connect the high-voltage conductors. A gas-insulated switchgear characterized by using a contact made of a contact piece. 請求項１記載のものにおいて、一方の前記高電圧導体に他方の前記高電圧導体の対向部を包囲する筒状ホルダを取り付け、この筒状ホルダと前記他方の高電圧導体との嵌合部にその嵌合方向の異なる位置に二種類のギャップを形成し、前記筒状ホルダの二種類のギャップ間に位置する部分に前記コンタクトを配置したことを特徴とするガス絶縁開閉装置。   In the thing of Claim 1, the cylindrical holder which surrounds the opposing part of the other said high voltage conductor to one said high voltage conductor is attached, and the fitting part of this cylindrical holder and said other high voltage conductor is attached. A gas insulated switchgear characterized in that two types of gaps are formed at different positions in the fitting direction, and the contact is arranged at a portion located between the two types of gaps of the cylindrical holder. 請求項１記載のものにおいて、一方の前記高電圧導体に他方の前記高電圧導体の対向部を包囲する筒状ホルダを取り付け、この筒状ホルダ内に嵌合する前記他方の高電圧導体に、異なる外径の先端側と基部側を形成して前記筒状ホルダと前記他方の高電圧導体との嵌合部にその嵌合方向の異なる二種類のギャップを形成し、前記筒状ホルダの二種類のギャップ間に位置する部分に前記コンタクトを配置したことを特徴とするガス絶縁開閉装置。
The thing of Claim 1 WHEREIN: The cylindrical holder which encloses the opposing part of the other said high voltage conductor is attached to one said high voltage conductor, and the other said high voltage conductor fitted in this cylindrical holder is attached to the said high voltage conductor, Two types of gaps having different fitting directions are formed in a fitting portion between the cylindrical holder and the other high-voltage conductor by forming a distal end side and a base side having different outer diameters, and two cylindrical holders are formed. A gas insulated switchgear characterized in that the contact is arranged in a portion located between different types of gaps.
JP2003414530A 2003-12-12 2003-12-12 Gas-insulated switching device Pending JP2005176536A (en)

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JP2009152050A (en) * 2007-12-20 2009-07-09 Bridgestone Corp Heater unit and assembly structure of heater unit
US8057270B2 (en) 2007-12-05 2011-11-15 Mitsubishi Electric Corporation Contact device
KR101086992B1 (en) * 2009-12-23 2011-11-29 주식회사 효성 conductive spring type contactor
KR101106839B1 (en) * 2010-01-18 2012-01-19 엘에스산전 주식회사 Connecting mechanism of conductors for switchgear
KR200461872Y1 (en) 2011-05-30 2012-08-14 엘에스산전 주식회사 Conductor connecting structure for gas insulated switchgear
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WO2020175757A1 (en) * 2019-02-26 2020-09-03 엘에스일렉트릭(주) Conductor connecting structure of gas-insulated switchgear
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KR101106839B1 (en) * 2010-01-18 2012-01-19 엘에스산전 주식회사 Connecting mechanism of conductors for switchgear
KR200461872Y1 (en) 2011-05-30 2012-08-14 엘에스산전 주식회사 Conductor connecting structure for gas insulated switchgear
JP2013033849A (en) * 2011-08-02 2013-02-14 Toshiba Corp Stationary induction electric apparatus and manufacturing method of the same
CN103871695A (en) * 2013-11-29 2014-06-18 中国水电顾问集团西北勘测设计研究院有限公司 Basin type insulator
WO2020175757A1 (en) * 2019-02-26 2020-09-03 엘에스일렉트릭(주) Conductor connecting structure of gas-insulated switchgear
CN114765357A (en) * 2021-01-13 2022-07-19 河南平高电气股份有限公司 Bus combination unit
CN114765358A (en) * 2021-01-13 2022-07-19 河南平高电气股份有限公司 GIL (Gate electrode array)
CN114765358B (en) * 2021-01-13 2024-05-17 河南平高电气股份有限公司 GIL (gas insulated switchgear)
CN114765357B (en) * 2021-01-13 2024-05-17 河南平高电气股份有限公司 Bus combined unit

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