JP6783720B2 - Vacuum switchgear - Google Patents

Vacuum switchgear Download PDF

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JP6783720B2
JP6783720B2 JP2017153257A JP2017153257A JP6783720B2 JP 6783720 B2 JP6783720 B2 JP 6783720B2 JP 2017153257 A JP2017153257 A JP 2017153257A JP 2017153257 A JP2017153257 A JP 2017153257A JP 6783720 B2 JP6783720 B2 JP 6783720B2
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spring
wipe
movable
switch
receiver
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JP2019032994A (en
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佐藤 隆
隆 佐藤
雅人 藪
雅人 藪
幸三 田村
幸三 田村
裕己 田井
裕己 田井
中山 靖章
靖章 中山
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Hitachi Industrial Equipment Systems Co Ltd
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Hitachi Industrial Equipment Systems Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/28Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/38Power arrangements internal to the switch for operating the driving mechanism using electromagnet
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches
    • H01H33/666Operating arrangements

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Description

本発明は真空開閉装置に係り、特に、開閉器と、この開閉器の開閉操作を行う操作器が直線上に配置されているものに好適な真空開閉装置に関する。 The present invention relates to a vacuum switchgear, and particularly relates to a switchgear and a vacuum switchgear suitable for a switchgear in which an operator for opening / closing the switchgear is arranged in a straight line.

従来の真空開閉装置、例えば、鉄道車両に搭載する高圧引き通しケーブル分岐ユニットを構成する真空開閉装置は、開閉器と操作器を直線上に配置されているが、両者を直線上に配置した場合、軸方向の長さが長くなっていた。 A conventional vacuum switchgear, for example, a vacuum switchgear constituting a high-voltage lead-through cable branching unit mounted on a railroad vehicle, has a switchgear and an operator arranged in a straight line, but when both are arranged in a straight line. , The length in the axial direction was long.

これを改善するための真空開閉装置として、例えば、特許文献1に記載されたものがある。この特許文献1に記載された真空開閉装置は、開閉器の開閉操作を行う電磁操作器の内部に、投入状態で開閉器電極に接触力を与えるばねワイプばねと、開閉器電極を開極するための遮断ばねとを入れ子に配置することで、軸方向の長さを短縮している。 As a vacuum switchgear for improving this, for example, there is one described in Patent Document 1. The vacuum switchgear described in Patent Document 1 opens a spring wipe spring that applies a contact force to the switchgear electrode in the closed state and a switchgear electrode inside the electromagnetic operator that opens and closes the switchgear. By arranging the shut-off springs for the purpose in a nested manner , the length in the axial direction is shortened.

そして、特許文献1に記載の真空開閉装置では、入れ子状に配置されたワイプばねと遮断ばねの一端を共に受け、電磁石の吸引力が伝達される第1の可動ばね受けと、ワイプばねの他端が接し、開閉器の可動側と機械的に接続されている第2の可動ばね受けと、遮断ばねの他端が接する固定ばね受けとを備え、開閉器では開閉動作中、第2の可動ばね受けが、常に固定ばね受けの内側に位置するようになっている。 In the vacuum opening / closing device described in Patent Document 1, a first movable spring receiver that receives both one end of a wipe spring and a blocking spring arranged in a nested manner and transmits an attractive force of an electromagnet, and a wipe spring and the like. It is equipped with a second movable spring receiver that is in contact with the end and mechanically connected to the movable side of the switch, and a fixed spring receiver that is in contact with the other end of the shutoff spring. The switch has a second movable during the opening / closing operation. The spring receiver is always located inside the fixed spring receiver.

中国特許出願公開第101615524号明細書Chinese Patent Application Publication No. 101615524

一般に、開閉器の開閉動作中の遮断ばねのエネルギロスを低減するには、遮断ばねの座屈を抑制する必要があり、そのためには、遮断ばねの内径と略等しい外径を持つガイドを遮断ばねの内側に配置することが有効である。 In general, in order to reduce the energy loss of the breaking spring during the opening / closing operation of the switch, it is necessary to suppress the buckling of the breaking spring, and for that purpose, the guide having an outer diameter substantially equal to the inner diameter of the breaking spring is cut off. It is effective to place it inside the spring.

特許文献1に記載の真空開閉装置では、遮断ばねの内部を貫通する電磁石の出力軸を段付き構造にし、この段付き構造の出力軸の大径部直径とワイプばねの外径を等しくすることにより、遮断ばねの内側を連続的、かつ、機械的にガイドすることで、遮断ばねの座屈を防止している。 In the vacuum opening / closing device described in Patent Document 1, the output shaft of the electromagnet penetrating the inside of the shutoff spring has a stepped structure, and the diameter of the large diameter portion of the output shaft of this stepped structure is made equal to the outer diameter of the wipe spring. As a result, the inside of the breaking spring is continuously and mechanically guided to prevent buckling of the breaking spring.

しかしながら、特許文献1に記載の真空開閉装置で遮断ばねの座屈を防止するためには、電磁石の出力軸にワイプばねの外径と等しい大径部を設ける必要があり、可動部重量の増加を招く恐れがあった。 However, in order to prevent buckling of the breaking spring in the vacuum opening / closing device described in Patent Document 1, it is necessary to provide a large diameter portion equal to the outer diameter of the wipe spring on the output shaft of the electromagnet, which increases the weight of the movable portion. There was a risk of inviting.

本発明は上述の点に鑑みなされたもので、その目的とするところは、可動部重量を増すことなく、遮断ばねの座屈を防止することができる真空開閉装置を提供することにある。 The present invention has been made in view of the above points, and an object of the present invention is to provide a vacuum switchgear capable of preventing buckling of a breaking spring without increasing the weight of a moving part.

本発明の真空開閉装置は、上記目的を達成するために、開閉器と、この開閉器の開閉操作を行う操作器とが直線上に配置され、前記開閉器が投入状態で開閉器電極に接触力を与えるワイプばね及び前記開閉器電極を開極する遮断ばねを備え、前記ワイプばね及び前記遮断ばねの一端は、共通の第1の可動ばね受けに当接し、前記第1の可動ばね受けは前記操作器に機械的に接続され、前記ワイプばねの他端は第2の可動ばね受けに当接すると共に、前記第2の可動ばね受けは前記開閉器に機械的に接続され、前記遮断ばねの他端は固定ばね受けに当接する構成の真空開閉装置であって、前記ワイプばねを前記遮断ばねの内側に入れ子状に配置し、かつ、前記開閉器の開閉動作に伴って、前記第2の可動ばね受けは、前記第1の可動ばね受けと前記固定ばね受けによって挟まれる軸方向領域外で、前記固定ばね受けより前記開閉器側に位置する状態を有し、前記開閉器の遮断状態では、前記第2の可動ばね受けは、前記固定ばね受けより内側に位置し、前記開閉器の投入状態では、前記第2の可動ばね受けは、前記固定ばね受けより外側に位置していることを特徴とする。 In the vacuum switch of the present invention, in order to achieve the above object, a switch and an operator for opening / closing the switch are arranged in a straight line, and the switch comes into contact with the switch electrode in the closed state. A wipe spring for applying force and a shutoff spring for opening the switch electrode are provided, and one end of the wipe spring and the shutoff spring abuts on a common first movable spring receiver, and the first movable spring receiver It is mechanically connected to the operator, the other end of the wipe spring abuts on the second movable spring receiver, and the second movable spring receiver is mechanically connected to the switch of the blocking spring. The other end is a vacuum opening / closing device having a configuration in which it abuts on a fixed spring receiver, and the wipe spring is arranged in a nested manner inside the blocking spring, and the second switch is opened / closed with the opening / closing operation of the switch . The movable spring receiver has a state of being located on the switch side of the fixed spring receiver outside the axial region sandwiched between the first movable spring receiver and the fixed spring receiver, and in the shutoff state of the switch. The second movable spring receiver is located inside the fixed spring receiver, and when the switch is turned on, the second movable spring receiver is located outside the fixed spring receiver. It is a feature.

本発明によれば、可動部重量を増すことなく、遮断ばねの座屈を防止することができる。 According to the present invention, buckling of the blocking spring can be prevented without increasing the weight of the moving part.

本発明の真空開閉装置が採用される鉄道車両における車両編成の例を示す図である。It is a figure which shows the example of the vehicle formation in the railroad vehicle which adopts the vacuum switchgear of this invention. 図1に示した鉄道車両編成における電気回路図である。It is an electric circuit diagram in the railroad car formation shown in FIG. 本発明の真空開閉装置の実施例1に採用される開閉器であるユニット開閉器の配置構成を示す図である。It is a figure which shows the arrangement structure of the unit switchgear which is a switchgear adopted in Example 1 of the vacuum switchgear of this invention. 図3に示したユニット開閉器にT形ケーブルヘッドを接続した状態を示す図である。It is a figure which shows the state which connected the T-type cable head to the unit switch shown in FIG. 図4に示したユニット開閉器をケース中に収納し、電気接続部に偏荷重が掛からないようにした構成を示す図である。FIG. 5 is a diagram showing a configuration in which the unit switch shown in FIG. 4 is housed in a case so that an unbalanced load is not applied to the electrical connection portion. 図3の側面図である。It is a side view of FIG. 車両の屋根上に設置された本発明の真空開閉装置の実施例1にケーブルを取り付け、これを外装ケース内に収納した艤装状態を示す図である。It is a figure which shows the mounting state which attached the cable to Example 1 of the vacuum switchgear of this invention installed on the roof of a vehicle, and stored this in an outer case. 本発明の真空開閉装置の実施例1を示し、真空インタラプタの遮断状態におけるワイプばねと遮断ばねの位置関係を示す図である。It is a figure which shows Example 1 of the vacuum switchgear of this invention, and shows the positional relationship of a wipe spring and a shutoff spring in a cutoff state of a vacuum interrupter. 本発明の真空開閉装置の実施例1を示し、真空インタラプタの投入状態におけるワイプばねと遮断ばねの位置関係を示す図である。It is a figure which shows Example 1 of the vacuum switchgear of this invention, and shows the positional relationship of a wipe spring and a shut-off spring in a state where a vacuum interrupter is put in. 本発明の真空開閉装置の実施例2を示し、真空インタラプタの遮断状態におけるワイプばねと遮断ばねの位置関係を示す図である。FIG. 2 shows Example 2 of the vacuum switchgear of the present invention, and is a diagram showing the positional relationship between the wipe spring and the shutoff spring in the cutoff state of the vacuum interrupter. 本発明の真空開閉装置の実施例2を示し、真空インタラプタの投入状態におけるワイプばねと遮断ばねの位置関係を示す図である。FIG. 2 shows Example 2 of the vacuum switchgear of the present invention, and is a diagram showing the positional relationship between the wipe spring and the shutoff spring in the state where the vacuum interrupter is turned on. 本発明の真空開閉装置の実施例3を示し、真空インタラプタの投入状態におけるワイプばねと遮断ばねの位置関係を示す図である。FIG. 3 shows Example 3 of the vacuum switchgear of the present invention, and is a diagram showing the positional relationship between the wipe spring and the breaking spring in the state where the vacuum interrupter is turned on. 本発明の真空開閉装置の実施例4を示し、真空インタラプタの遮断状態におけるワイプばねと遮断ばねの位置関係を示す図である。FIG. 4 shows Example 4 of the vacuum switchgear of the present invention, and is a diagram showing the positional relationship between the wipe spring and the shutoff spring in the cutoff state of the vacuum interrupter. 本発明の真空開閉装置の実施例4を示し、真空インタラプタの投入状態におけるワイプばねと遮断ばねの位置関係を示す図である。FIG. 4 shows Example 4 of the vacuum switchgear of the present invention, and is a diagram showing the positional relationship between the wipe spring and the breaking spring in the state where the vacuum interrupter is turned on. 本発明の真空開閉装置の実施例5を示し、真空インタラプタの遮断状態におけるワイプばねと遮断ばねの位置関係を示す図である。FIG. 5 shows Example 5 of the vacuum switchgear of the present invention, and is a diagram showing the positional relationship between the wipe spring and the shutoff spring in the cutoff state of the vacuum interrupter.

以下、図示した実施例に基づいて本発明の真空開閉装置を説明する。なお、各実施例において、同一構成部品には同符号を使用する。 Hereinafter, the vacuum switchgear of the present invention will be described based on the illustrated examples. In each embodiment, the same reference numerals are used for the same components.

図1に、本発明の真空開閉装置が採用される鉄道車両における車両編成の例を示す。 FIG. 1 shows an example of vehicle formation in a railway vehicle in which the vacuum switchgear of the present invention is adopted.

該図に示す如く、本実施例における鉄道車両25は、符号1stCar、2ndCar、3rdCar、4thCar、5thCar、6thCar、7thCar、8thCarの8両編成で構成されている。 As shown in the figure, the railroad vehicle 25 in this embodiment is composed of eight cars of reference numerals 1stCar, 2ndCar, 3rdCar, 4thCar, 5thCar, 6thCar, 7thCar, and 8thCar.

そして、車両の屋根上には、高圧引き通しケーブルRC1、RC2、RC3、RC4、RC5が配置され、これらの高圧引き通しケーブルRC1、RC2、RC3、RC4、RC5は、直線ジョイントSJ1、SJ2、SJ3、SJ4で車両間が接続され、かつ、T分岐ジョイントTJ1、TJ2で車両の床下方向に分岐されている。 High-voltage pull-through cables RC1, RC2, RC3, RC4, and RC5 are arranged on the roof of the vehicle, and these high-voltage pull-through cables RC1, RC2, RC3, RC4, and RC5 are linear joints SJ1, SJ2, and SJ3. , SJ4 connects the vehicles, and T-branch joints TJ1 and TJ2 branch in the underfloor direction of the vehicle.

また、高圧引き通しケーブルRC3、RC5には、パンタグラフPG1、PG2が接続されていて、図示しないき電線から電力を受電している。 Further, pantographs PG1 and PG2 are connected to the high-voltage lead-through cables RC3 and RC5, and electric power is received from an electric wire (not shown).

図2は、図1に示した鉄道車両の車両編成における電気回路を示す。 FIG. 2 shows an electric circuit in the rolling stock formation of the railway vehicle shown in FIG.

該図に示すように、高圧引き通しケーブルRC1は、直接、車両の床下に設けられた受電用VCB1の1次側に接続され、受電用真空遮断器VCB1の2次側は主変圧器Tr1に接続され、主変圧器TR1の2次巻線は電動機に、3次巻き線は補器へそれぞれ電力を供給する。同じく、T分岐ユニットTJ1で分岐された高圧引き通しケーブルは、車両の床下に設けられた受電用真空遮断器VCB2の1次側に接続され、受電用VCB2の2次側は主変圧器Tr2に接続され、主変圧器TR2の2次巻線は電動機に、3次巻き線は補器へそれぞれ電力を供給する。同じく、T分岐ユニットTJ2で分岐された高圧引き通しケーブルは、車両の床下に設けられた受電用真空遮断器VCB3の1次側に接続され、受電用VCB3の2次側は主変圧器Tr3に接続され、主変圧器TR3の2次巻線は電動機に、3次巻き線は補器へそれぞれ電力を供給する。 As shown in the figure, the high-voltage lead-through cable RC1 is directly connected to the primary side of the power receiving VCB1 provided under the floor of the vehicle, and the secondary side of the power receiving vacuum circuit breaker VCB1 is connected to the main transformer Tr1. Connected, the secondary winding of the main transformer TR1 supplies power to the electric motor, and the tertiary winding supplies power to the auxiliary equipment. Similarly, the high-voltage lead-through cable branched by the T-branch unit TJ1 is connected to the primary side of the power receiving vacuum circuit breaker VCB2 provided under the floor of the vehicle, and the secondary side of the power receiving VCB2 is connected to the main transformer Tr2. Connected, the secondary winding of the main transformer TR2 supplies power to the electric motor, and the tertiary winding supplies power to the auxiliary equipment. Similarly, the high-voltage lead-through cable branched by the T-branch unit TJ2 is connected to the primary side of the power receiving vacuum circuit breaker VCB3 provided under the floor of the vehicle, and the secondary side of the power receiving VCB3 is connected to the main transformer Tr3. Connected, the secondary winding of the main transformer TR3 supplies power to the electric motor, and the tertiary winding supplies power to the auxiliary equipment.

図2に示すように、受電用真空遮断器VCB1、VCB2、VCB3及び各主変圧器Tr1、Tr2、Tr3は、車両の床下に配置されており、それ以外の図2に記載されている電気機器(ケーブルRC1、RC2、RC3、RC4、RC5、直線ジョイントSJ1、SJ2、SJ3、SJ4、パンタグラフPG1、PG2、T分岐ジョイントTJ1、TJ2)は、車両の屋根の上に配置されている。 As shown in FIG. 2, the power receiving vacuum breakers VCB1, VCB2, and VCB3 and the main transformers Tr1, Tr2, and Tr3 are arranged under the floor of the vehicle, and other electrical devices shown in FIG. (Cables RC1, RC2, RC3, RC4, RC5, straight joints SJ1, SJ2, SJ3, SJ4, pantographs PG1, PG2, T-branch joints TJ1, TJ2) are arranged on the roof of the vehicle.

ところで、作業者が車両の屋根の上に登るのは利便性を欠くため、極力、作業者が車両の屋根の上に登らずに作業できることが好ましい。また、車両の屋根の上に、電気機器を配置する場合、車両の屋根の特に高さ方向でのスペースの制約が大きく、電気機器も高さを低減できることが望まれる。 By the way, since it is not convenient for the worker to climb on the roof of the vehicle, it is preferable that the worker can work without climbing on the roof of the vehicle as much as possible. Further, when the electric device is arranged on the roof of the vehicle, the space of the roof of the vehicle is particularly restricted in the height direction, and it is desired that the height of the electric device can be reduced.

例えば、図2に示した電気回路において、Faultで示した位置で地絡故障が発生した場合には、直線ジョイントSJ2を外部からの指令により自動的に開放することで、主変圧器Tr1のみを切り離して運転を続行することが可能になる。具体的には、下述するユニット開閉器における可動電極5を動作させる。 For example, in the electric circuit shown in FIG. 2, when a ground fault occurs at the position indicated by Fault, the linear joint SJ2 is automatically opened by an external command to open only the main transformer Tr1. It becomes possible to disconnect and continue the operation. Specifically, the movable electrode 5 in the unit switch described below is operated.

本実施例では、図2にFaultで示した位置で地絡故障が生じた場合を例に説明しているため、事故の波及を防ぐべく、直線ジョイントSJ2のみが回路の切り離しを行っているが、地絡故障の場所に応じて、切り離しを行う直線ジョイントが変わるのは言うまでもない。 In this embodiment, the case where a ground fault occurs at the position shown by Fault in FIG. 2 is described as an example. Therefore, in order to prevent the spread of the accident, only the linear joint SJ2 disconnects the circuit. Needless to say, the straight joint to be separated changes depending on the location of the ground fault.

このような構造とすることで、車両の屋根上に作業者が登ることなく、不具合箇所を含む高電圧ケーブルと健全な高電圧ケーブルとを自動的に分離することができる。 With such a structure, it is possible to automatically separate the high-voltage cable including the defective portion from the sound high-voltage cable without the operator climbing on the roof of the vehicle.

図3に、本実施例の真空開閉装置に採用される開閉器であるユニット開閉器(T分岐ジョイントTJ1、TJ2)の詳細を示す。 FIG. 3 shows details of the unit switchgear (T-branch joints TJ1 and TJ2), which is a switchgear used in the vacuum switchgear of this embodiment.

該図に示すユニット開閉器(T分岐ジョイントTJ1、TJ2)は、固定電極3と、この固定電極3に対して接触または開離する可動電極5と、固定電極3及び可動電極5の周囲を覆うアークシールド6と、このアークシールド6を支持し、真空インタラプタ1の外側容器を構成する円筒形状のセラミック絶縁筒7A、7Bと、ベローズ2等から構成される真空インタラプタ1を備えている。 The unit switch (T-branch joint TJ1, TJ2) shown in the figure covers the fixed electrode 3, the movable electrode 5 that contacts or opens the fixed electrode 3, and the fixed electrode 3 and the movable electrode 5. It includes an arc shield 6, cylindrical ceramic insulating cylinders 7A and 7B that support the arc shield 6 and form an outer container of the vacuum interrupter 1, and a vacuum interrupter 1 composed of bellows 2 and the like.

上述した真空インタラプタ1の外側容器は、セラミック絶縁筒7A、7Bの両端を端板で覆って構成され、内部を真空状態に維持している。固定電極3は、固定導体3aに接続されており、固定導体3aは真空インタラプタ1の外に引き出されている。一方、可動電極5は、可動導体5aに接続されており、可動導体5aは真空インタラプタ1の外に引き出されている。上述したベローズ2は、可動導体5aと可動側の端版の間に配置されて、真空インタラプタ1の真空状態を維持したまま、可動導体5aが可動できるようになっている。 The outer container of the vacuum interrupter 1 described above is configured by covering both ends of the ceramic insulating cylinders 7A and 7B with end plates, and keeps the inside in a vacuum state. The fixed electrode 3 is connected to the fixed conductor 3a, and the fixed conductor 3a is pulled out of the vacuum interrupter 1. On the other hand, the movable electrode 5 is connected to the movable conductor 5a, and the movable conductor 5a is pulled out of the vacuum interrupter 1. The bellows 2 described above is arranged between the movable conductor 5a and the end plate on the movable side so that the movable conductor 5a can move while maintaining the vacuum state of the vacuum interrupter 1.

また、ユニット開閉器は、固定導体3aと接続されるブッシング導体9Aと、可動導体5aと接続されるブッシング導体9B及び9Cを、エポキシ樹脂などの固体絶縁物11でモールドし、真空インタラプタ1の可動側には、真空インタラプタ1の可動電極5を固定電極3に対して接離自在に駆動する気中絶縁操作ロッド10を備えている。 Further, in the unit switch, the bushing conductor 9A connected to the fixed conductor 3a and the bushing conductors 9B and 9C connected to the movable conductor 5a are molded with a solid insulating material 11 such as epoxy resin, and the vacuum interrupter 1 is movable. On the side, an aerial insulation operation rod 10 for driving the movable electrode 5 of the vacuum interrupter 1 to and from the fixed electrode 3 is provided.

上述した固体絶縁物11は、真空インタラプタ1、ブッシング導体9A、9B及び9Cを密着して覆う他、気中絶縁操作ロッド10の周囲を覆っている。また、気中絶縁操作ロッド10の周囲の空間は、固体絶縁物11と封止手段によって封止され、内部には乾燥空気やSF6ガスなどの絶縁ガスが封入されている。なお、封止手段としては、直線シールやベローズが適用される。 The solid insulator 11 described above closely covers the vacuum interrupter 1, the bushing conductors 9A, 9B and 9C, and also covers the periphery of the aerial insulation operation rod 10. Further, the space around the aerial insulation operation rod 10 is sealed with a solid insulator 11 by a sealing means, and an insulating gas such as dry air or SF6 gas is sealed inside. As the sealing means, a straight seal or a bellows is applied.

また、気中絶縁操作ロッド10は電磁操作器12に接続され、電磁操作器12は真空インタラプタ1と略直線上に配置されている。なお、8A、8B、8Cは、電気接続部である。 Further, the air insulation operating rod 10 is connected to the electromagnetic operating device 12, and the electromagnetic operating device 12 is arranged substantially in a straight line with the vacuum interrupter 1. Note that 8A, 8B, and 8C are electrical connection portions.

次に、図4に、図3に示したユニット開閉器(T分岐ジョイントTJ1、TJ2)にT形ケーブルヘッド13A、13B、13Cを接続した状態を示す。 Next, FIG. 4 shows a state in which the T-shaped cable heads 13A, 13B, and 13C are connected to the unit switch (T branch joints TJ1, TJ2) shown in FIG.

図4に示すように、真空インタラプタ1は、電磁操作器12と略直線上に配置されており、固定電極3側の固定導体3aに接続されたブッシング導体9Aに、電気接続部8Aを介してT形ケーブルヘッド13Aが図4中の上方配置となるように接続され、可動電極5側の可動導体5aに接続されたブッシング導体9B及び9Cに、電気接続部8B及び8Cを介してT形ケーブルヘッド13B及び13Cが図4中の左右配置となるように接続されている。14A、14B、14Cは絶縁栓である。 As shown in FIG. 4, the vacuum interrupter 1 is arranged substantially linearly with the electromagnetic controller 12, and is connected to the bushing conductor 9A connected to the fixed conductor 3a on the fixed electrode 3 side via the electrical connection portion 8A. The T-type cable head 13A is connected so as to be arranged upward in FIG. 4, and is connected to the bushing conductors 9B and 9C connected to the movable conductor 5a on the movable electrode 5 side via the electrical connection portions 8B and 8C. The heads 13B and 13C are connected so as to be arranged in the left-right arrangement in FIG. 14A, 14B and 14C are insulating plugs.

このような配置とすることで、電磁操作器12とT形ケーブルヘッド13B及び13Cから延びるケーブルが干渉しないため、全幅を縮小することができる。 With such an arrangement, the total width can be reduced because the electromagnetic controller 12 and the cables extending from the T-shaped cable heads 13B and 13C do not interfere with each other.

なお、電磁操作器12は、詳述は省略するが、例えば、ばねに永久磁石と電磁石を組み合わせて、電磁石を構成するコイルへの通電をON/OFF切り換えることで駆動力を発生している。 Although detailed description is omitted, the electromagnetic actuator 12 generates a driving force by, for example, combining a permanent magnet and an electromagnet with a spring and switching ON / OFF of energization of a coil constituting the electromagnet.

次に、図5に、図4に示したユニット開閉器(T分岐ジョイントTJ1、TJ2)を外装ケース17中に収納し、電気接続部8A、8B、8Cに偏荷重が掛からないようにした構成を示す。 Next, in FIG. 5, the unit switches (T branch joints TJ1 and TJ2) shown in FIG. 4 are housed in the outer case 17 so that an unbalanced load is not applied to the electrical connection portions 8A, 8B and 8C. Is shown.

該図に示すように、T形ケーブルヘッド13A、13B、13Cからそれぞれ延びるケーブル15A、15B、15Cを、外装ケース17で機械的に保持して分岐ジョイントを構成し、電気接続部8A、8B、8Cに偏荷重が掛からないようにしている。 As shown in the figure, the cables 15A, 15B, 15C extending from the T-shaped cable heads 13A, 13B, 13C, respectively, are mechanically held by the outer case 17 to form a branch joint, and the electrical connection portions 8A, 8B, An unbalanced load is not applied to 8C.

ここで、ケーブル15Bは鉄道車両の前方(図中下方向)へ、ケーブル15Aは鉄道車両の後方(図中上方向)へ引き通され、ケーブル15Cは床下の主変圧器に接続されている。 Here, the cable 15B is routed to the front of the railway vehicle (downward in the figure), the cable 15A is routed to the rear of the railway vehicle (upward in the figure), and the cable 15C is connected to the main transformer under the floor.

このような構成では、安全性を確保すべく、車両の屋根は接地されており、更に、T形ケーブルヘッド13A、13B、13C、ユニット開閉器(T分岐ジョイントTJ1、TJ2)の表面は接地電位になっている。 In such a configuration, the roof of the vehicle is grounded to ensure safety, and the surfaces of the T-shaped cable heads 13A, 13B, 13C and the unit switch (T branch joints TJ1, TJ2) are grounded. It has become.

一般に、作業者の安全性確保の観点から車両の屋根は接地されているが、上述したように、車両の屋根に配置する電気機器に対しては、高さ上の制約も大きい。 Generally, the roof of the vehicle is grounded from the viewpoint of ensuring the safety of workers, but as described above, there are also large height restrictions on the electrical equipment arranged on the roof of the vehicle.

これに対して、図5に示した構成によれば、T形ケーブルヘッド13A、13B、13C、ユニット開閉器(T分岐ジョイントTJ1、TJ2)の表面が接地電位になっているため、車両の屋根との間で絶縁距離を確保する必要が無く、高さを低減できる。より具体的には、分岐ユニットを屋根上に、屋根に対して略並行に配置することが可能になる。 On the other hand, according to the configuration shown in FIG. 5, since the surfaces of the T-shaped cable heads 13A, 13B, 13C and the unit switch (T branch joints TJ1 and TJ2) are at the ground potential, the roof of the vehicle It is not necessary to secure an insulation distance between the and, and the height can be reduced. More specifically, the branch unit can be arranged on the roof and substantially parallel to the roof.

また、ブッシング導体9B、9Cは、可動電極5の可動方向に対して実質的に直角な方向に配置されており、可動方向に大型化することを防止している。 Further, the bushing conductors 9B and 9C are arranged in a direction substantially perpendicular to the movable direction of the movable electrode 5 to prevent the bushing conductors 9B and 9C from increasing in size in the movable direction.

図5に示した構成では、可動電極5の可動方向に対して実質的に直角な方向にブッシング導体9B、9Cを配置しているが、少なくとも可動電極5の可動方向とは異なる方向に設けられていれば、一定の効果は期待できる。 In the configuration shown in FIG. 5, the bushing conductors 9B and 9C are arranged in a direction substantially perpendicular to the movable direction of the movable electrode 5, but are provided at least in a direction different from the movable direction of the movable electrode 5. If so, a certain effect can be expected.

また、図6に示すように、ユニット開閉器(T分岐ジョイントTJ1、TJ2)は、ステー19A、19B、19Cによってベース18に固定され、ベース18が鉄道車両に固定されている。 Further, as shown in FIG. 6, the unit switches (T branch joints TJ1 and TJ2) are fixed to the base 18 by the stays 19A, 19B and 19C, and the base 18 is fixed to the railway vehicle.

また、図7は、車両の屋根16上に設置された上述した真空開閉装置にケーブル15A、15Bを取り付け、これを外装ケース17内に収納した艤装状態を示すものである。 Further, FIG. 7 shows a state in which cables 15A and 15B are attached to the above-mentioned vacuum switchgear installed on the roof 16 of the vehicle and the cables 15A and 15B are housed in the outer case 17.

次に、図8及び図9に、本実施例の真空開閉装置における真空インタラプタ1が遮断状態(固定電極3と可動電極5が開離状態)及び投入状態(固定電極3と可動電極5が接触状態)で可動電極5に接触力を与えるワイプばね20と可動電極5を開極する遮断ばね21の詳細を示す(図8のA部は、図3のA部に相当する)。なお、図8は真空インタラプタ1の遮断状態、図9は真空インタラプタ1の投入状態を示す。 Next, in FIGS. 8 and 9, the vacuum interrupter 1 in the vacuum opening / closing device of this embodiment is in a cutoff state (fixed electrode 3 and movable electrode 5 are in an open state) and in a closed state (fixed electrode 3 and movable electrode 5 are in contact with each other). The details of the wipe spring 20 that gives a contact force to the movable electrode 5 and the blocking spring 21 that opens the movable electrode 5 in the state) are shown (part A in FIG. 8 corresponds to part A in FIG. 3). Note that FIG. 8 shows a shutoff state of the vacuum interrupter 1, and FIG. 9 shows a closed state of the vacuum interrupter 1.

図8及び図9に示すように、本実施例の真空開閉装置は、真空インタラプタ1と、この真空インタラプタ1の開閉操作を行う電磁操作器12が略直線状に配置されていると共に、ワイプばね20遮断ばね21の内側に入れ子状に配置されている。 As shown in FIGS. 8 and 9, in the vacuum switchgear of this embodiment, the vacuum interrupter 1 and the electromagnetic actuator 12 that performs the opening / closing operation of the vacuum interrupter 1 are arranged substantially linearly, and the wipe spring. 20 are arranged in a nested manner inside the blocking spring 21.

そして、ワイプばね20及び遮断ばね21の一端(電磁操作器12側)は、共通の第1の可動ばね受け22に当接し、この第1の可動ばね受け22は、電磁操作器12に機械的に接続され、ワイプばね20の他端(真空インタラプタ1側)は、第2の可動ばね受け23に当接すると共に、第2の可動ばね受け23は、真空インタラプタ1に機械的に接続され、遮断ばね21の他端(真空インタラプタ1側)は、固定ばね受け24に当接して構成され、しかも、真空インタラプタ1の開閉動作に伴って、第2の可動ばね受け23は、第1の可動ばね受け22と固定ばね受け24によって挟まれる軸方向領域(図9のLの範囲)外に位置する状態を有している。 Then, one end (electromagnetic operator 12 side) of the wipe spring 20 and the cutoff spring 21 abuts on the common first movable spring receiver 22, and the first movable spring receiver 22 mechanically attaches to the electromagnetic operator 12. The other end (vacuum interrupter 1 side) of the wipe spring 20 abuts on the second movable spring receiver 23, and the second movable spring receiver 23 is mechanically connected to the vacuum interrupter 1 and shuts off. The other end of the spring 21 (on the vacuum interrupter 1 side) is configured to be in contact with the fixed spring receiver 24, and the second movable spring receiver 23 is a first movable spring as the vacuum interrupter 1 opens and closes. It has a state of being located outside the axial region (range L in FIG. 9) sandwiched between the receiver 22 and the fixed spring receiver 24.

具体的には、真空インタラプタ1が遮断状態(図8の状態)では、第2の可動ばね受け23は、固定ばね受け24よりやや内側(電磁操作器12側)に位置し、真空インタラプタ1の投入状態(図9の状態)では、第2の可動ばね受け23は、固定ばね受け24より外側(反操作器側=真空インタラプタ1側)に位置している。 Specifically, when the vacuum interrupter 1 is in the cutoff state (the state shown in FIG. 8), the second movable spring receiver 23 is located slightly inside the fixed spring receiver 24 (on the electromagnetic controller 12 side), and is located on the vacuum interrupter 1. In the closed state (state of FIG. 9), the second movable spring receiver 23 is located outside the fixed spring receiver 24 (anti-operator side = vacuum interrupter 1 side).

このような本実施例の構成とすることにより、真空インタラプタ1の開閉動作の間、ワイプばね20を遮断ばね21の内側に入れ子状に配置しているため、ワイプばね20の外周面が、遮断ばね21の内周面をガイドするので、座屈防止のためのガイドを設ける必要がないため可動部重量が増えることはないし、しかも、第2の可動ばね受け23は、第1の可動ばね受け22と固定ばね受け24によって挟まれる軸方向領域(図9のLの範囲)外に位置する状態を有しているので、遮断ばね21の全体(端から端まで)がワイプばね20でガイドされるため、遮断ばね21の座屈が抑制され、その結果、遮断ばね21のエネルギロスが低減される。 With the configuration of this embodiment as described above, since the wipe spring 20 is arranged in a nested manner inside the blocking spring 21 during the opening / closing operation of the vacuum interrupter 1, the outer peripheral surface of the wipe spring 20 is blocked. Since the inner peripheral surface of the spring 21 is guided, it is not necessary to provide a guide for preventing buckling, so that the weight of the movable portion does not increase, and the second movable spring receiver 23 is the first movable spring receiver. Since it has a state of being located outside the axial region (range L in FIG. 9) sandwiched between the 22 and the fixed spring receiver 24, the entire shutoff spring 21 (from end to end) is guided by the wipe spring 20. that reason, buckling of the opening spring 21 is suppressed, so that energy loss of the blocking spring 21 is reduced.

また、ワイプばね20は、ばね状とすることで同じ外径を持つ中実軸よりも重量が小さいため、中実軸の外周面で遮断ばね21の内周面をガイドする場合に比べて、可動部重量の増加を抑制することができる。 Further, since the wipe spring 20 has a spring shape, the weight is smaller than that of the solid shaft having the same outer diameter, so that the wipe spring 20 is smaller than the solid shaft having the same outer diameter. It is possible to suppress an increase in the weight of the moving part.

また、本実施例では、ワイプばね20と遮断ばね21の素線の巻方向を逆方向(例えば、ワイプばね20の素線を右巻きにし、遮断ばね21の素線を左巻き)にすることで、ワイプばね20と遮断ばね21の素線がお互いに噛み合うことがなく、円滑なガイド作用を実現できる。 Further, in this embodiment, the winding directions of the wires of the wipe spring 20 and the blocking spring 21 are opposite to each other (for example, the wires of the wipe spring 20 are wound right and the wires of the blocking spring 21 are wound left). , The wire of the wipe spring 20 and the breaking spring 21 do not mesh with each other, and a smooth guide action can be realized.

更に、本実施例では、図9の投入状態で、第2可動ばね受け23の近傍のねじの締め付け状況が目視で点検できるため、信頼性が高いという効果もある。 Further, in this embodiment, the tightening state of the screw in the vicinity of the second movable spring receiver 23 can be visually inspected in the state of being turned on in FIG. 9, so that there is also an effect of high reliability.

よって、本実施例によれば、遮断ばね21とワイプばね20を入れ子構造にすることで軸方向の長さが短縮され、かつ、可動部重量を増加させずに遮断ばね21の内側をワイプばね20でガイドすることで、遮断ばね21の座屈を防止し、遮断動作時のエネルギロスを低減できる。 Therefore, according to this embodiment, by forming the shutoff spring 21 and the wipe spring 20 into a nested structure, the length in the axial direction is shortened, and the inside of the shutoff spring 21 is wiped without increasing the weight of the movable part. By guiding with 20, the buckling of the shutoff spring 21 can be prevented and the energy loss during the shutoff operation can be reduced.

本発明の真空開閉装置の実施例2について、図10及び図11を用いて説明する。なお、図10は真空インタラプタ1の遮断状態、図11は真空インタラプタ1の投入状態を示す。 Example 2 of the vacuum switchgear of the present invention will be described with reference to FIGS. 10 and 11. Note that FIG. 10 shows a shutoff state of the vacuum interrupter 1, and FIG. 11 shows a closed state of the vacuum interrupter 1.

該図に示す本実施例は、その構成は実施例1と略同一であるが、本実施例では、ワイプばね20と遮断ばね21の素線の巻方向を同じ方向にし、しかも、ワイプばね20の素線を粗に巻き、遮断ばね21の素線を密に巻いているものである(ワイプばね20の素線を密に巻き、遮断ばね21の素線を粗に巻いても構わない)。 The configuration of the present embodiment shown in the figure is substantially the same as that of the first embodiment, but in the present embodiment, the winding directions of the wires of the wipe spring 20 and the blocking spring 21 are the same, and the wipe spring 20 (The wire of the wipe spring 20 may be wound tightly and the wire of the blocking spring 21 may be wound roughly). ..

このような本実施例でも、ワイプばね20の巻ピッチを適切に選べば(ワイプばね20の素線を粗に巻き、遮断ばね21の素線を密に巻くこと)、実施例1と同様の効果を得ることができる。また、ワイプばね20と遮断ばね21の素線の巻方向が同じため、ばねの内側の貫通軸や、ねじ締結部を外部から目視しやすいという効果がある。 In this embodiment as well, if the winding pitch of the wipe spring 20 is appropriately selected (the wire of the wipe spring 20 is roughly wound and the wire of the blocking spring 21 is tightly wound), the same as in the first embodiment. The effect can be obtained. Further, since the winding direction of the wire of the wipe spring 20 and the breaking spring 21 is the same, there is an effect that the through shaft inside the spring and the screw fastening portion can be easily seen from the outside.

本発明の真空開閉装置の実施例3について、図12を用いて説明する。なお、図12は真空インタラプタ1の投入状態を示す。 Example 3 of the vacuum switchgear of the present invention will be described with reference to FIG. Note that FIG. 12 shows a state in which the vacuum interrupter 1 is charged.

該図に示す本実施例は、その構成は実施例1と略同一であるが、本実施例では、第1可動ばね受け22のワイプばね20に当接する部分を肉厚にすることで、ワイプばね20の全長を短縮するものである。 This embodiment shown in the drawing, although its construction is substantially the same as in Example 1, in this embodiment, by abutting portions wiping spring 20 of the first movable spring bearing 22 to the wall thickness, The total length of the wipe spring 20 is shortened.

即ち、本実施例では、第1可動ばね受け22のワイプばね20に当接する部位を軸方向に突出させて凸部22aを形成し、この凸部22aの径方向の厚みを、ワイプばね20の外径と同程度にしたものである。 That is, in this embodiment, the portion of the first movable spring receiver 22 that comes into contact with the wipe spring 20 is projected in the axial direction to form the convex portion 22a, and the radial thickness of the convex portion 22a is determined by the wipe spring 20. It is about the same as the outer diameter.

このような本実施例では、実施例1と同じガイド効果、第2可動ばね受け23近傍のねじの締め付け状況を目視で点検できる効果を得ながら、第1可動ばね受け22の肉厚の部分にワイプばね20を配置しなくてよいので、ワイプばね20の全長を短縮できるため、ワイプばね20の全長の選択範囲を広げられる効果がある。 In this embodiment, the same guide effect as in the first embodiment and the effect of visually checking the tightening state of the screw in the vicinity of the second movable spring receiver 23 can be obtained, and the thick portion of the first movable spring receiver 22 can be used. Since it is not necessary to arrange the wipe spring 20, the total length of the wipe spring 20 can be shortened, which has the effect of expanding the selection range of the total length of the wipe spring 20.

本発明の真空開閉装置の実施例4について、図13及び図14を用いて説明する。なお、図13は真空インタラプタ1の遮断状態、図14は真空インタラプタ1の投入状態を示す。 Example 4 of the vacuum switchgear of the present invention will be described with reference to FIGS. 13 and 14. Note that FIG. 13 shows a shutoff state of the vacuum interrupter 1, and FIG. 14 shows a closed state of the vacuum interrupter 1.

該図に示す本実施例は、その構成は実施例1と略同一であるが、本実施例では、第2の可動ばね受け23は、第1の可動ばね受け22と固定ばね受け24によって挟まれる軸方向領域(図13及び図14のLの範囲)外に常に(遮断状態及び投入状態でも)位置しているものである。 The configuration of the present embodiment shown in the figure is substantially the same as that of the first embodiment, but in the present embodiment, the second movable spring receiver 23 is sandwiched between the first movable spring receiver 22 and the fixed spring receiver 24. It is always located outside the axial region (the range L in FIGS. 13 and 14) (even in the shut-off state and the closed state).

即ち、本実施例では、真空インタラプタ1の遮断状態(図13の状態)と投入状態(図14の状態)で、第2の可動ばね受け23は、第1の可動ばね受け22と固定ばね受け24によって挟まれる軸方向領域(図13及び図14のLの範囲)外で、固定ばね受け24より真空インタラプタ1側に常に位置している。 That is, in this embodiment, the second movable spring receiver 23 is the first movable spring receiver 22 and the fixed spring receiver in the shutoff state (state of FIG. 13) and the closing state (state of FIG. 14) of the vacuum interrupter 1. It is always located on the vacuum interrupter 1 side of the fixed spring receiver 24 outside the axial region (range L in FIGS. 13 and 14) sandwiched by the 24.

このような本実施例でも、実施例1と同様の効果が得られることは勿論、真空インタラプタ1の投入状態のみならず遮断状態でも第2可動ばね受け23の近傍のねじ締め付け状況を目視できるため、更に信頼性が向上する。 In this embodiment as well, the same effect as that of the first embodiment can be obtained, and the screw tightening state in the vicinity of the second movable spring receiver 23 can be visually observed not only in the closed state but also in the closed state of the vacuum interrupter 1. , Further improvement in reliability.

本発明の真空開閉装置の実施例5について、図15を用いて説明する。なお、図15は真空インタラプタ1の遮断状態を示す。 Example 5 of the vacuum switchgear of the present invention will be described with reference to FIG. Note that FIG. 15 shows the cutoff state of the vacuum interrupter 1.

該図に示す本実施例は、その構成は実施例1と略同一であるが、本実施例では、ワイプばねを2つ用い、1つのワイプばね20を内側にし、その外側にワイプばね20Aを入れ子状に配置すると共に、この入れ子状になった2つのワイプばね20、20Aを内側にし、その外側に遮断ばね21を入れ子状に配置する構成としたものである。 The configuration of this embodiment shown in the figure is substantially the same as that of the first embodiment, but in this embodiment, two wipe springs are used, one wipe spring 20 is on the inside, and the wipe spring 20A is on the outside. In addition to being arranged in a nested manner, the two nested wipe springs 20 and 20A are arranged inside, and the blocking spring 21 is arranged in a nested manner on the outside.

このような本実施例でも、実施例1と同様の効果を得ながら、異なる外径の2つのワイプばね20、20Aを組み合わせることで、ワイプばねのサージング特性を変更することができる。 In this embodiment as well, the surging characteristics of the wipe spring can be changed by combining two wipe springs 20 and 20A having different outer diameters while obtaining the same effect as in the first embodiment.

なお、上記した実施例は本発明を分かり易く説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。 It should be noted that the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is possible to add / delete / replace a part of the configuration of each embodiment with another configuration.

1…真空インタラプタ、2…ベローズ、3…固定電極、3a…固定導体、5…可動電極、5a…可動導体、6…アークシールド、7A、7B…セラミック絶縁筒、8A、8B、8C…電気接続部、9A、9B、9C…ブッシング導体、10…気中絶縁操作ロッド、11…固体絶縁物、12…電磁操作器、13A、13B、13C…T形ケーブルヘッド、14A、14B、14C…絶縁栓、15A、15B、15C…ケーブル、16…屋根、17…外装ケース、18…ベース、19A、19B、19C…ステー、20、20A…ワイプばね、21…遮断ばね、22…第1の可動ばね受け、22a…第1の可動ばね受けの凸部、23…第2の可動ばね受け、24…固定ばね受け、25…鉄道車両。 1 ... Vacuum interrupter, 2 ... Bellows, 3 ... Fixed electrode, 3a ... Fixed conductor, 5 ... Movable electrode, 5a ... Movable conductor, 6 ... Arc shield, 7A, 7B ... Ceramic insulation cylinder, 8A, 8B, 8C ... Electrical connection Parts, 9A, 9B, 9C ... Bushing conductor, 10 ... Air insulation operating rod, 11 ... Solid insulation, 12 ... Electromagnetic controller, 13A, 13B, 13C ... T-type cable head, 14A, 14B, 14C ... Insulation plug , 15A, 15B, 15C ... Cable, 16 ... Roof, 17 ... Exterior case, 18 ... Base, 19A, 19B, 19C ... Stay, 20, 20A ... Wipe spring, 21 ... Blocking spring, 22 ... First movable spring receiver , 22a ... Convex portion of the first movable spring receiver, 23 ... Second movable spring receiver, 24 ... Fixed spring receiver, 25 ... Railway vehicle.

Claims (6)

開閉器と、この開閉器の開閉操作を行う操作器とが直線上に配置され、前記開閉器が投入状態で開閉器電極に接触力を与えるワイプばね及び前記開閉器電極を開極する遮断ばねを備え、
前記ワイプばね及び前記遮断ばねの一端は、共通の第1の可動ばね受けに当接し、前記第1の可動ばね受けは前記操作器に機械的に接続され、前記ワイプばねの他端は第2の可動ばね受けに当接すると共に、前記第2の可動ばね受けは前記開閉器に機械的に接続され、前記遮断ばねの他端は固定ばね受けに当接する構成の真空開閉装置であって、
前記ワイプばねを前記遮断ばねの内側に入れ子状に配置し、かつ、前記開閉器の開閉動作に伴って、前記第2の可動ばね受けは、前記第1の可動ばね受けと前記固定ばね受けによって挟まれる軸方向領域外で、前記固定ばね受けより前記開閉器側に位置する状態を有し、
前記開閉器の遮断状態では、前記第2の可動ばね受けは、前記固定ばね受けより内側に位置し、前記開閉器の投入状態では、前記第2の可動ばね受けは、前記固定ばね受けより外側に位置していることを特徴とする真空開閉装置。
A switch and an operator for opening / closing the switch are arranged in a straight line, and a wipe spring that gives a contact force to the switch electrode when the switch is turned on and a shutoff spring that opens the switch electrode. With
One end of the wipe spring and the blocking spring abuts on a common first movable spring receiver, the first movable spring receiver is mechanically connected to the operator, and the other end of the wipe spring is a second. The second movable spring receiver is mechanically connected to the switch, and the other end of the shutoff spring is a vacuum opening / closing device that abuts the fixed spring receiver.
The wipe spring is nested inside the shutoff spring, and the second movable spring receiver is provided by the first movable spring receiver and the fixed spring receiver in accordance with the opening / closing operation of the switch . It has a state of being located on the switch side from the fixed spring receiver outside the sandwiched axial region.
In the shutoff state of the switchgear, the second movable spring receiver is located inside the fixed spring receiver, and in the closed state of the switchgear, the second movable spring receiver is outside the fixed spring receiver. A vacuum switchgear characterized by being located in .
開閉器と、この開閉器の開閉操作を行う操作器とが直線上に配置され、前記開閉器が投入状態で開閉器電極に接触力を与えるワイプばね及び前記開閉器電極を開極する遮断ばねを備え、
前記ワイプばね及び前記遮断ばねの一端は、共通の第1の可動ばね受けに当接し、前記第1の可動ばね受けは前記操作器に機械的に接続され、前記ワイプばねの他端は第2の可動ばね受けに当接すると共に、前記第2の可動ばね受けは前記開閉器に機械的に接続され、前記遮断ばねの他端は固定ばね受けに当接する構成の真空開閉装置であって
前記ワイプばねを前記遮断ばねの内側に入れ子状に配置し、かつ、前記開閉器の遮断状態と投入状態では、前記第2の可動ばね受けは、前記第1の可動ばね受けと前記固定ばね受けによって挟まれる軸方向領域外で、前記固定ばね受けより前記開閉器側に常に位置していることを特徴とする真空開閉装置。
A switch and an operator for opening / closing the switch are arranged in a straight line, and a wipe spring that gives a contact force to the switch electrode when the switch is turned on and a shutoff spring that opens the switch electrode. With
One end of the wipe spring and the blocking spring abuts on a common first movable spring receiver, the first movable spring receiver is mechanically connected to the operator, and the other end of the wipe spring is a second. The second movable spring receiver is mechanically connected to the switch, and the other end of the shutoff spring is a vacuum opening / closing device that abuts the fixed spring receiver .
When the wipe spring is arranged inside the shutoff spring in a nested manner and the switchgear is shut off and turned on, the second movable spring receiver is the first movable spring receiver and the fixed spring receiver. A vacuum switchgear that is always located on the switchgear side of the fixed spring receiver outside the axial region sandwiched by the switchgear.
請求項1又は2に記載の真空開閉装置において、
前記ワイプばねと前記遮断ばねの素線の巻方向が逆巻きであることを特徴とする真空開閉装置。
In the vacuum switchgear according to claim 1 or 2 .
A vacuum switchgear characterized in that the winding directions of the wires of the wipe spring and the blocking spring are reverse winding.
請求項1又は2に記載の真空開閉装置において、
前記ワイプばねと前記遮断ばねの素線の巻方向が同じであり、かつ、前記ワイプばねと前記遮断ばねの素線のいずれか一方が粗に巻かれ、他方が密に巻かれていることを特徴とする真空開閉装置。
In the vacuum switchgear according to claim 1 or 2 .
The winding direction of the wire of the wipe spring and the breaking spring is the same, and one of the wire of the wipe spring and the breaking spring is roughly wound and the other is tightly wound. A featured vacuum switchgear.
請求項1乃至のいずれか1項に記載の真空開閉装置において、
前記第1の可動ばね受けの前記ワイプばねに当接する部位を軸方向に突出させて凸部を形成し、この凸部の径方向の厚みを、前記ワイプばねの外径と同程度にしたことを特徴とする真空開閉装置。
In the vacuum switchgear according to any one of claims 1 to 4 .
A portion of the first movable spring receiver that comes into contact with the wipe spring is projected in the axial direction to form a convex portion, and the radial thickness of the convex portion is set to be about the same as the outer diameter of the wipe spring. A vacuum switchgear characterized by.
請求項1乃至のいずれか1項に記載の真空開閉装置において、
前記ワイプばねは、2つのワイプばねが入れ子状になって構成され、この入れ子状になった2つの前記ワイプばねが前記遮断ばねと入れ子状になっていることを特徴とする真空開閉装置。
In the vacuum switchgear according to any one of claims 1 to 5 ,
The wipe spring is a vacuum switchgear characterized in that two wipe springs are nested, and the two nested wipe springs are nested with the blocking spring.
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