JP2018108026A - Tank type vacuum circuit breaker - Google Patents

Tank type vacuum circuit breaker Download PDF

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JP2018108026A
JP2018108026A JP2018071449A JP2018071449A JP2018108026A JP 2018108026 A JP2018108026 A JP 2018108026A JP 2018071449 A JP2018071449 A JP 2018071449A JP 2018071449 A JP2018071449 A JP 2018071449A JP 2018108026 A JP2018108026 A JP 2018108026A
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fixed
vacuum valve
movable
tank
insulating layer
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JP6471253B2 (en
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哲 塩入
Satoru Shioiri
哲 塩入
祐樹 藤井
Yuki Fujii
祐樹 藤井
直紀 浅利
Naoki Asari
直紀 浅利
佐藤　純一
Junichi Sato
純一 佐藤
信孝 久保田
Nobutaka Kubota
信孝 久保田
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Toshiba Corp
Toshiba Infrastructure Systems and Solutions Corp
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Toshiba Corp
Toshiba Infrastructure Systems and Solutions Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a tank type vacuum breaker in which an outer insulation of a first vacuum valve is reinforced and eco-friendly insulation gas is filled and in which a shutdown function and a ground opening/closing function are combined.SOLUTION: A tank type vacuum breaker includes: a tank 1; a first vacuum valve 2 formed in the tank 1; a fixed-side electrode 3 which is fixed at a fixed side of the first vacuum valve 2; a movable-side electrode 6 which is fixed at a movable side of the first vacuum valve 2; an insulation layer 10 formed over an outer periphery of the first vacuum valve 2; a ground layer 11 formed over an outer periphery of the insulation layer 10; a fixed-side bushing 22 which has a boundary surface connect portion; a movable-side bushing 27 which has a boundary surface connection portion; a ground open/close rod 14 that moves in a grounding cavity part 12 to come into contact with/separate away from a fixed-side electrode 3; an insulation operation rod 17 that moves in an open/close operation cavity part 16; and eco-friendly insulation gas sealed in the tank 1. The first vacuum valve 2, the ground open/close rod 14, and the insulation operation rod 17 are arranged on the same axis.SELECTED DRAWING: Figure 1

Description

本発明の実施形態は、タンク内に外部絶縁の補強をした真空バルブを収納し、接地開閉機能を付加したタンク形真空遮断器に関する。   Embodiments of the present invention relate to a tank-type vacuum circuit breaker in which a vacuum valve with reinforced external insulation is housed in a tank and a ground opening / closing function is added.

従来、タンク形真空遮断器には、タンク内にＳＦ６ガスのような絶縁ガスを封入し、真空バルブの外部絶縁の補強が行われている。しかしながら、環境上、ＳＦ６ガスの漏洩などを厳重に管理しなくてはならず、保守点検を困難とさせている（例えば、特許文献１参照。）。 Conventionally, tank-type vacuum circuit breakers are filled with an insulating gas such as SF 6 gas in the tank to reinforce the external insulation of the vacuum valve. However, due to the environment, leakage of SF 6 gas and the like must be strictly controlled, making maintenance and inspection difficult (see, for example, Patent Document 1).

このようなタンク形真空遮断器は、架空線から受電し、電力系統の開閉を行う遮断機能ほか、母線電流切換を行う断路機能や、誘導電流開閉を行う接地開閉機能を有するとしている。しかしながら、いずれの機能も単独で有するものであり、複数機能が必要な場合にはその機能を有する複数台が必要であった（例えば、特許文献２参照。）。   Such a tank-type vacuum circuit breaker has a disconnecting function for switching a bus current and a grounding switching function for opening and closing an induced current in addition to a blocking function for receiving power from an overhead line and switching the power system. However, each of the functions is independent, and when a plurality of functions are required, a plurality of units having the functions are required (for example, see Patent Document 2).

一方、真空絶縁容器内に、遮断用の接点と接地開閉用の接点を収納し、遮断機能と接地開閉機能を有するものが知られている。しかしながら、この真空絶縁容器は、箱体に収納され、電力ケーブルより受電されるものであり、定格電圧３０ｋＶ以下の中電圧クラスに適用されている（例えば、特許文献３参照。）。   On the other hand, there is known a vacuum insulating container having a blocking function and a ground switching function by housing a blocking contact and a ground switching contact. However, this vacuum insulation container is housed in a box and receives power from a power cable, and is applied to a medium voltage class with a rated voltage of 30 kV or less (see, for example, Patent Document 3).

これらのことより、架空線から受電し、定格電圧６０ｋＶ以上の高電圧クラスに適用するタンク形真空遮断器において、真空バルブの外部絶縁を補強してＳＦ６ガスのような絶縁ガスを不要とし、環境配慮形とするとともに、遮断機能と接地開閉機能を兼ね備えたものが望まれていた。複合機能化により、単独機能のものと比べて、設置面積の縮小化を図ることができる。これら環境配慮形や複合機能化は、最近の趨勢である。 From these, in tank type vacuum circuit breakers that receive power from overhead wires and are applied to the high voltage class with a rated voltage of 60 kV or higher, the external insulation of the vacuum valve is reinforced to eliminate the need for insulating gas such as SF 6 gas, In addition to being environmentally friendly, it has been desired to have a shut-off function and a ground opening / closing function. Due to the composite function, the installation area can be reduced as compared with a single function. These environmentally conscious forms and compound functions are recent trends.

特開２０１１−２２９１９５号公報JP2011-229195A 特開２００１−３１９５５１号公報JP 2001-319551 A 特開２０１１−１２０３６４号公報JP 2011-120364 A

本発明が解決しようとする課題は、真空バルブの外部絶縁を補強してＳＦ６ガスに替わって環境に適する絶縁ガスを封入し、遮断機能とともに接地開閉機能を有して設置面積の縮小化を図ることのできるタンク形真空遮断器を提供することにある。 The problem to be solved by the present invention is to reinforce the external insulation of the vacuum valve and enclose an insulating gas suitable for the environment in place of the SF 6 gas, and to have a ground opening / closing function as well as a shut-off function to reduce the installation area. An object of the present invention is to provide a tank type vacuum circuit breaker that can be realized.

上記課題を解決するために、実施形態のタンク形真空遮断器は、タンクと、前記タンク内に設けられた第１の真空バルブと、前記第１の真空バルブの固定側に固定された固定側電極と、前記第１の真空バルブの可動側に固定された可動側電極と、前記第１の真空バルブ、前記固定側電極、前記可動側電極の外周に設けられるとともに、固定側界面接続部および可動側界面接続部を設けた絶縁層と、前記絶縁層の外周に設けられた接地層と、前記固定側界面接続部に接続された界面接続部を有する固定側ブッシングと、前記可動側界面接続部に接続された界面接続部を有する可動側ブッシングと、前記絶縁層の固定側に設けた接地開閉空洞部を移動して前記固定側電極に接離する接地開閉棒と、前記絶縁層の可動側に設けた開閉操作空洞部を移動するとともに、前記第１の真空バルブの可動軸に連結された絶縁操作ロッドと、前記タンク内に封入された環境に適する絶縁ガスとを備え、前記第１の真空バルブ、前記接地開閉棒、前記絶縁操作ロッドを同軸上に配置したことを特徴とする。   In order to solve the above problems, a tank-type vacuum circuit breaker according to an embodiment includes a tank, a first vacuum valve provided in the tank, and a fixed side fixed to a fixed side of the first vacuum valve. An electrode, a movable side electrode fixed to the movable side of the first vacuum valve, the first vacuum valve, the fixed side electrode, an outer periphery of the movable side electrode, and a fixed side interface connecting portion; An insulating layer provided with a movable side interface connection portion, a ground layer provided on an outer periphery of the insulating layer, a fixed side bushing having an interface connection portion connected to the fixed side interface connection portion, and the movable side interface connection A movable-side bushing having an interface connection portion connected to the portion; a ground-opening / closing rod that moves on and off the ground-opening / closing cavity provided on the fixed side of the insulating layer; Move the open / close operation cavity on the side. And an insulating operation rod connected to the movable shaft of the first vacuum valve, and an insulating gas suitable for the environment enclosed in the tank, the first vacuum valve, the ground opening / closing rod, The insulating operation rod is arranged on the same axis.

本発明の実施例１に係るタンク形真空遮断器の構成を示す断面図。Sectional drawing which shows the structure of the tank type vacuum circuit breaker which concerns on Example 1 of this invention. 本発明の実施例２に係るタンク形真空遮断器の構成を示す断面図。Sectional drawing which shows the structure of the tank type vacuum circuit breaker which concerns on Example 2 of this invention.

以下、図面を参照して本発明の実施例を説明する。   Embodiments of the present invention will be described below with reference to the drawings.

先ず、本発明の実施例１に係るタンク形真空遮断器を図１を参照して説明する。図１は、本発明の実施例１に係るタンク形真空遮断器の構成を示す断面図である。   First, a tank type vacuum circuit breaker according to Embodiment 1 of the present invention will be described with reference to FIG. 1 is a cross-sectional view showing a configuration of a tank-type vacuum circuit breaker according to Embodiment 1 of the present invention.

図１に示すように、金属製の筒状のタンク１内には、軸方向に接離自在の一対の接点を有する第１の真空バルブ２が設けられている。第１の真空バルブ２の固定側には、円柱状の固定側電極３が固定されている。固定側電極３には、図示上部の側面に突出した固定側接続部４、第１の真空バルブ２と対向する軸面に窪んだ接地電極部５が設けられている。可動側には、筒状の可動側電極６が固定されている。可動側電極６には、図示上部の側面に突出した可動側接続部７が設けられ、内周部に第１の真空バルブ２の可動軸８が接触子９を介して移動自在に貫通している。   As shown in FIG. 1, a first vacuum valve 2 having a pair of contacts that can be contacted and separated in the axial direction is provided in a metal cylindrical tank 1. A cylindrical fixed side electrode 3 is fixed to the fixed side of the first vacuum valve 2. The fixed-side electrode 3 is provided with a fixed-side connecting portion 4 that protrudes from the side surface in the upper part of the figure and a ground electrode portion 5 that is recessed in the axial surface facing the first vacuum valve 2. A cylindrical movable electrode 6 is fixed on the movable side. The movable side electrode 6 is provided with a movable side connecting portion 7 protruding from the side surface in the upper part of the figure, and the movable shaft 8 of the first vacuum valve 2 penetrates the inner peripheral portion through a contactor 9 so as to be movable. Yes.

固定側電極３、第１の真空バルブ２、可動側電極６の周りには、エポキシ樹脂をモールドして形成した絶縁層１０が設けられている。絶縁層１０の外周には、後述する界面接続部を除き、点線で示すように、導電性塗料を塗布した接地層１１が設けられている。   Around the fixed side electrode 3, the first vacuum valve 2, and the movable side electrode 6, an insulating layer 10 formed by molding an epoxy resin is provided. On the outer periphery of the insulating layer 10, a ground layer 11 to which a conductive paint is applied is provided as indicated by a dotted line, except for an interface connecting portion described later.

絶縁層１０の固定側電極３側では、固定側接続部４がテーパ状に窪んだ固定側界面接続部となっており、また、筒状の接地開閉空洞部１２が第１の真空バルブ２と同軸上に配置されている。接地電極部５は、接地開閉空洞部１２に露出している。接地開閉空洞部１２の絶縁層１０端とタンク１の一方開口端は、フランジ１３に固定されている。フランジ１３の中央開口部には、接地開閉空洞部１２を移動自在に移動し、接地電極部５に接離する接地電極棒１４が設けられている。接地電極棒１４は、接地操作機構１５に連結され、接地極に接続されている。   On the fixed-side electrode 3 side of the insulating layer 10, the fixed-side connection portion 4 is a fixed-side interface connection portion that is recessed in a taper shape, and a cylindrical ground opening / closing cavity portion 12 is connected to the first vacuum valve 2. It is arranged on the same axis. The ground electrode portion 5 is exposed to the ground opening / closing cavity 12. The insulating layer 10 end of the ground opening / closing cavity 12 and one open end of the tank 1 are fixed to the flange 13. At the center opening of the flange 13, a ground electrode rod 14 is provided that moves movably through the ground opening / closing cavity 12 and contacts and separates from the ground electrode 5. The ground electrode rod 14 is connected to the ground operation mechanism 15 and connected to the ground electrode.

絶縁層１０の可動側電極６側では、可動側接続部７がテーパ状に窪んだ可動側界面接続部となっており、また、筒状の開閉操作空洞部１６が第１の真空バルブ２と同軸上に配置されている。開閉操作空洞部１６には、可動軸８に連結された絶縁操作ロッド１７が移動自在に配置されている。開閉操作空洞部１６の絶縁層１０端とタンク１の他方開口端は、フランジ１８に固定されている。フランジ１８の中央開口部には、絶縁操作ロッド１７に連結された操作軸が貫通し、開閉操作機構１９に連結されている。   On the movable side electrode 6 side of the insulating layer 10, the movable side connection portion 7 is a movable side interface connection portion that is recessed in a taper shape, and the cylindrical opening / closing operation cavity portion 16 is connected to the first vacuum valve 2. It is arranged on the same axis. An insulating operation rod 17 connected to the movable shaft 8 is movably disposed in the opening / closing operation cavity 16. The insulating layer 10 end of the opening / closing operation cavity 16 and the other opening end of the tank 1 are fixed to the flange 18. An operation shaft connected to the insulating operation rod 17 passes through the central opening of the flange 18 and is connected to the opening / closing operation mechanism 19.

固定側接続部４には、固定側導体２０が接続され、固定側がい管２１を貫通している。固定側がい管２１は、タンク１の図示左上部の開口穴に傾斜して取付けられている。固定側導体２０の周りには、エポキシ樹脂をモールドした固定側絶縁層２２が設けられ、図示下部側が突出した界面接続部となっており、絶縁層１０に設けた固定側界面接続部と密着している。固定側絶縁層２２の周りには、点線で示すように導電性塗料を塗布した固定側接地層２３が設けられている。固定側がい管２１内の固定側絶縁層２２部分が沿面絶縁となる。固定側がい管２１の先端には、一方の架空線が接続される固定側外部電極２４が設けられている。   A fixed-side conductor 20 is connected to the fixed-side connecting portion 4 and penetrates the fixed-side insulating tube 21. The fixed side insulating pipe 21 is attached to the opening hole in the upper left portion of the tank 1 in an inclined manner. Around the fixed-side conductor 20, a fixed-side insulating layer 22 molded with an epoxy resin is provided. The lower side of the figure is an interface connection portion that protrudes, and is in close contact with the fixed-side interface connection portion provided on the insulating layer 10. ing. Around the fixed-side insulating layer 22, a fixed-side ground layer 23 to which a conductive paint is applied is provided as indicated by a dotted line. The fixed-side insulating layer 22 portion in the fixed-side insulating tube 21 is creeping insulation. A fixed-side external electrode 24 to which one overhead wire is connected is provided at the tip of the fixed-side insulation tube 21.

可動側接続部７には、可動側導体２５が接続され、可動側がい管２６を貫通している。可動側がい管２６は、タンク１の図示右上部の開口穴に傾斜して取付けられている。可動側導体２５の周りには、エポキシ樹脂をモールドした可動側絶縁層２７が設けられ、図示下部側が突出した界面接続部となっており、絶縁層１０に設けた可動側界面接続部と密着している。可動側絶縁層２７の周りには、点線で示すように導電性塗料を塗布した可動側接地層２８が設けられている。可動側がい管２６内の可動側絶縁層２７部分が沿面絶縁となる。可動側がい管２６の先端には、他方の架空線が接続される可動側外部電極２９が設けられている。   A movable side conductor 25 is connected to the movable side connecting portion 7 and penetrates through the movable side insulating pipe 26. The movable side insulating pipe 26 is attached to the opening hole in the upper right portion of the tank 1 in an inclined manner. Around the movable-side conductor 25, a movable-side insulating layer 27 molded with epoxy resin is provided. The lower side in the figure is an interface connection portion that protrudes, and is in close contact with the movable-side interface connection portion provided in the insulating layer 10. ing. Around the movable insulating layer 27, there is provided a movable ground layer 28 to which a conductive paint is applied as indicated by a dotted line. A portion of the movable insulating layer 27 in the movable insulating pipe 26 is creeping insulation. A movable side external electrode 29 to which the other overhead wire is connected is provided at the tip of the movable side insulation tube 26.

がい管２１、２６内を含むタンク１内には、乾燥空気、窒素ガス、二酸化炭素ガスのような環境に適するいずれかの絶縁ガスが正圧力で封入されている。接地開閉空洞部１２、開閉操作空洞部１７も同様である。なお、がい管２１、２６の外周に、貫通形変流器を設けることができる。   In the tank 1 including the inside of the insulating pipes 21 and 26, any insulating gas suitable for the environment such as dry air, nitrogen gas, and carbon dioxide gas is sealed at a positive pressure. The same applies to the ground opening / closing cavity 12 and the opening / closing operation cavity 17. In addition, a through-type current transformer can be provided on the outer periphery of the insulator tubes 21 and 26.

これにより、絶縁層１０で第１の真空バルブ２の外部絶縁を補強することができ、定格電圧６０ｋＶ以上の高電圧クラスに適用するものでも、絶縁耐力がＳＦ６ガスよりも低いとされる環境に適する絶縁ガスを封入することができる。適用する電圧クラスにより、絶縁層１０の絶縁厚さや、絶縁層２２、２７の沿面絶縁距離を選定するものとする。また、固定側がい管２１、可動側がい管２６を有しているので、屋外にも設置することができ、架空線から受電することができる。更に、第１の真空バルブ２による電力系統の遮断機能と、接地電極部５と接離する接地開閉棒１４を備えた接地開閉機能とを有しているので、機器の複合機能化を図ることができる。 Thereby, the external insulation of the first vacuum valve 2 can be reinforced by the insulating layer 10, and even if it is applied to the high voltage class having a rated voltage of 60 kV or higher, the dielectric strength is assumed to be lower than the SF 6 gas. An insulating gas suitable for the above can be sealed. The insulation thickness of the insulating layer 10 and the creeping insulation distance of the insulating layers 22 and 27 are selected according to the applied voltage class. Moreover, since it has the fixed side insulating pipe 21 and the movable side insulating pipe 26, it can also be installed outdoors and can receive electric power from an overhead wire. Furthermore, since it has a power system cutoff function by the first vacuum valve 2 and a ground opening / closing function provided with a ground opening / closing rod 14 that is in contact with and away from the ground electrode section 5, a composite function of the device is achieved. Can do.

機器配置では、接地開閉棒１４、第１の真空バルブ２、絶縁操作ロッド１７を同軸上に配置し、第１の真空バルブ２を境に対称配置としているので、開閉機能と接地開閉機能の操作力を絶縁層１０でバランスよく受けることができる。なお、第１の真空バルブ２によって遮断機能を有するので、電流開閉においては断路機能を有するものとなる。断路機能では、極間耐電圧が課せられるので、例えば遮断機能のものよりもギャップ長を大きくすればよい。   In the arrangement of the equipment, the grounding opening / closing rod 14, the first vacuum valve 2, and the insulation operating rod 17 are coaxially arranged and symmetrically arranged with the first vacuum valve 2 as a boundary. The force can be received in a balanced manner by the insulating layer 10. In addition, since it has a cutoff function by the 1st vacuum valve 2, it has a disconnection function in current switching. Since the withstand voltage between the electrodes is imposed in the disconnection function, for example, the gap length may be made larger than that in the disconnection function.

接地開閉空洞部１２から第１の真空バルブ２、開閉操作空洞部１６までを一体の絶縁層１０としたが、接地開閉空洞部１２、第１の真空バルブ２、開閉操作空洞部１６で分割し、互いを界面接続部で接続することができる。これにより、遮断機能と断路機能の真空バルブの入れ替えを容易とすることができる。   The ground insulating opening / closing cavity 12 to the first vacuum valve 2 and the opening / closing operation cavity 16 are integrated into the insulating layer 10. However, the grounding opening / closing cavity 12, the first vacuum valve 2, and the opening / closing operation cavity 16 are divided. , And can be connected to each other at the interface connection. Thereby, replacement | exchange of the vacuum valve of a interruption | blocking function and a disconnection function can be made easy.

ここで、固定側導体２０、固定側絶縁層２２、固定側接地層２３などで構成される部材を、界面接続部を有する固定側ブッシングと定義する。また、可動側導体２５、可動側絶縁層２７、可動側接地層２８などで構成される部材を、界面接続部を有する可動側ブッシングと定義する。   Here, a member composed of the fixed-side conductor 20, the fixed-side insulating layer 22, the fixed-side ground layer 23, and the like is defined as a fixed-side bushing having an interface connection portion. Further, a member composed of the movable side conductor 25, the movable side insulating layer 27, the movable side ground layer 28, and the like is defined as a movable side bushing having an interface connection portion.

上記実施例１のタンク形真空遮断器によれば、第１の真空バルブ２の外周に絶縁層１０を設け、固定側に固定側がい管２１に収納される固定側ブッシングを接続し、可動側に可動側がい管２６に収納される可動側ブッシングを接続しているので、第１の真空バルブ２の外部絶縁を補強することができ、環境に適する絶縁ガスによっても定格電圧６０ｋＶ以上の高電圧クラスに適用できるものとすることができる。また、第１の真空バルブ２による遮断機能と、固定側電極３に設けた接地電極部５と移動自在の接地開閉棒１４によって接地開閉機能を持たせることができる。機器の複合機能化により、設置面積の縮小化を図ることができる。   According to the tank type vacuum circuit breaker of the first embodiment, the insulating layer 10 is provided on the outer periphery of the first vacuum valve 2, the fixed side bushing accommodated in the fixed side insulating tube 21 is connected to the fixed side, and the movable side Since the movable-side bushing accommodated in the movable-side insulating tube 26 is connected to the outer side, the external insulation of the first vacuum valve 2 can be reinforced, and a high voltage of a rated voltage of 60 kV or higher can be obtained even with an insulating gas suitable for the environment. It can be applicable to the class. Further, the blocking function by the first vacuum valve 2 and the ground opening / closing function can be provided by the ground electrode portion 5 provided on the fixed side electrode 3 and the movable ground opening / closing rod 14. The installation area can be reduced by combining the functions of the devices.

次に、本発明の実施例２に係るタンク形真空遮断器を図２を参照して説明する。図２は、本発明の実施例２に係るタンク形真空遮断器の構成を示す断面図である。なお、この実施例２が実施例１と異なる点は、接地開閉機能に第２の真空バルブを用いたことである。図２において、実施例１と同様の構成部分においては、同一符号を付し、その詳細な説明を省略する。   Next, a tank type vacuum circuit breaker according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 2 is a cross-sectional view showing a configuration of a tank-type vacuum circuit breaker according to Embodiment 2 of the present invention. The second embodiment differs from the first embodiment in that a second vacuum valve is used for the ground opening / closing function. In FIG. 2, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

図２に示すように、固定側電極３には、接離自在の一対の接点を有する第２の真空バルブ３０の固定側が固定されている。第２の真空バルブ３０の可動側は、接地操作機構１５に連結され、接地極に接続されている。第２の真空バルブ３０の外周には、絶縁層１０が設けられている。   As shown in FIG. 2, the fixed side of the second vacuum valve 30 having a pair of contactable and separable contacts is fixed to the fixed side electrode 3. The movable side of the second vacuum valve 30 is connected to the ground operation mechanism 15 and connected to the ground electrode. An insulating layer 10 is provided on the outer periphery of the second vacuum valve 30.

上記実施例２のタンク形真空遮断器によれば、実施例１による効果のほかに、接地開閉機能を、投入性能や絶縁性能の優れた第２の真空バルブ３０で行うことができ、縮小化を図ることができる。また、第２の真空バルブ３０の固定側接点を固定側封着金具に固定しているので、可動側接点のストロークを長くすることができ、接地開閉器としての信頼性を向上させることができる。   According to the tank-type vacuum circuit breaker of the second embodiment, in addition to the effects of the first embodiment, the ground opening / closing function can be performed by the second vacuum valve 30 having excellent charging performance and insulation performance. Can be achieved. Moreover, since the fixed side contact of the second vacuum valve 30 is fixed to the fixed side metal fitting, the stroke of the movable side contact can be lengthened and the reliability as a ground switch can be improved. .

以上述べたような実施形態によれば、遮断性能を有する第１の真空バルブの外部絶縁を補強することができ、タンク内に環境に適する絶縁ガスを封入することができる。また、遮断機構（断路機能）と接地開閉機能を持たせることができる。   According to the embodiment as described above, the external insulation of the first vacuum valve having the shut-off performance can be reinforced, and the insulating gas suitable for the environment can be sealed in the tank. In addition, a blocking mechanism (disconnection function) and a ground opening / closing function can be provided.

本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

１ タンク
２ 第１の真空バルブ
３ 固定側電極
６ 可動側電極
１０ 絶縁層
１１ 接地層
１２ 接地開閉空洞部
１４ 接地開閉棒
１６ 開閉操作空洞部
３０ 第２の真空バルブ DESCRIPTION OF SYMBOLS 1 Tank 2 1st vacuum valve 3 Fixed side electrode 6 Movable side electrode 10 Insulating layer 11 Grounding layer 12 Grounding opening / closing cavity 14 Grounding opening / closing bar 16 Opening / closing operation cavity 30 Second vacuum valve

Claims (4)

タンクと、
前記タンク内に設けられた第１の真空バルブと、
前記第１の真空バルブの固定側に固定された固定側電極と、
前記第１の真空バルブの可動側に固定された可動側電極と、
前記第１の真空バルブ、前記固定側電極、前記可動側電極の外周に設けられるとともに、固定側界面接続部および可動側界面接続部を設けた絶縁層と、
前記絶縁層の外周に設けられた接地層と、
前記固定側界面接続部に接続された界面接続部を有する固定側ブッシングと、
前記可動側界面接続部に接続された界面接続部を有する可動側ブッシングと、
前記絶縁層の固定側に設けた接地開閉空洞部を移動して前記固定側電極に接離する接地開閉棒と、
前記絶縁層の可動側に設けた開閉操作空洞部を移動するとともに、前記第１の真空バルブの可動軸に連結された絶縁操作ロッドと、
前記タンク内に封入された環境に適する絶縁ガスとを備え、
前記第１の真空バルブ、前記接地開閉棒、前記絶縁操作ロッドを同軸上に配置したことを特徴とするタンク形真空遮断器。 A tank,
A first vacuum valve provided in the tank;
A fixed side electrode fixed to the fixed side of the first vacuum valve;
A movable electrode fixed to the movable side of the first vacuum valve;
An insulating layer provided on the outer periphery of the first vacuum valve, the fixed electrode, and the movable electrode, and provided with a fixed interface interface and a movable interface interface;
A grounding layer provided on the outer periphery of the insulating layer;
A fixed-side bushing having an interface connection connected to the fixed-side interface connection;
A movable-side bushing having an interface connection portion connected to the movable-side interface connection portion;
A grounding open / close bar that moves through a grounding open / close cavity provided on the fixed side of the insulating layer and contacts and separates from the fixed side electrode;
Moving the open / close operation cavity provided on the movable side of the insulating layer and connected to the movable shaft of the first vacuum valve;
An insulating gas suitable for the environment enclosed in the tank,
A tank-type vacuum circuit breaker characterized in that the first vacuum valve, the ground opening / closing rod, and the insulating operation rod are arranged coaxially. 前記絶縁ガスは、乾燥空気、窒素ガス、二酸化炭素ガスのいずれかであることを特徴とする請求項１に記載のタンク形真空遮断器。   The tank-type vacuum circuit breaker according to claim 1, wherein the insulating gas is any one of dry air, nitrogen gas, and carbon dioxide gas. 前記第１の真空バルブを断路用としたことを特徴とする請求項１または請求項２に記載のタンク形真空遮断器。   The tank-type vacuum circuit breaker according to claim 1 or 2, wherein the first vacuum valve is used for disconnection. タンクと、
前記タンク内に設けられた第１の真空バルブと、
前記第１の真空バルブの固定側に固定側が固定された第２の真空バルブと、
前記第２の真空バルブの可動軸に接続された接地極と、
前記第１の真空バルブ、前記第２の真空バルブの外周に設けられるとともに、固定側界面接続部および可動側界面接続部を設けた絶縁層と、
前記絶縁層の外周に設けられた接地層と、
前記固定側界面接続部に接続された界面接続部を有する固定側ブッシングと、
前記可動側界面接続部に接続された界面接続部を有する可動側ブッシングと、
前記絶縁層の可動側に設けた開閉操作空洞部を移動するとともに、前記第１の真空バルブの可動軸に連結された絶縁操作ロッドと、
前記タンク内に封入された環境に適する絶縁ガスとを備え、
前記第２の真空バルブの固定側接点を固定側封着金具に固定したことを特徴とするタンク形真空遮断器。 A tank,
A first vacuum valve provided in the tank;
A second vacuum valve having a fixed side fixed to a fixed side of the first vacuum valve;
A grounding electrode connected to the movable shaft of the second vacuum valve;
An insulating layer provided on an outer periphery of the first vacuum valve and the second vacuum valve, and provided with a fixed-side interface connecting portion and a movable-side interface connecting portion;
A grounding layer provided on the outer periphery of the insulating layer;
A fixed-side bushing having an interface connection connected to the fixed-side interface connection;
A movable-side bushing having an interface connection portion connected to the movable-side interface connection portion;
Moving the open / close operation cavity provided on the movable side of the insulating layer and connected to the movable shaft of the first vacuum valve;
An insulating gas suitable for the environment enclosed in the tank,
A tank-type vacuum circuit breaker characterized in that a fixed contact of the second vacuum valve is fixed to a fixed sealing metal fitting.
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