JPH07226131A - Internal accident detecting device for gas insulating electric equipment - Google Patents

Internal accident detecting device for gas insulating electric equipment

Info

Publication number
JPH07226131A
JPH07226131A JP1660994A JP1660994A JPH07226131A JP H07226131 A JPH07226131 A JP H07226131A JP 1660994 A JP1660994 A JP 1660994A JP 1660994 A JP1660994 A JP 1660994A JP H07226131 A JPH07226131 A JP H07226131A
Authority
JP
Japan
Prior art keywords
light
container
translucent
incident
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP1660994A
Other languages
Japanese (ja)
Inventor
Naohiro Kaneman
直弘 金万
Munechika Saito
宗敬 斉藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissin Electric Co Ltd
Original Assignee
Nissin Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissin Electric Co Ltd filed Critical Nissin Electric Co Ltd
Priority to JP1660994A priority Critical patent/JPH07226131A/en
Publication of JPH07226131A publication Critical patent/JPH07226131A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H2009/0292—Transparent window or opening, e.g. for allowing visual inspection of contact position or contact condition
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/065—Means for detecting or reacting to mechanical or electrical defects

Landscapes

  • Testing Relating To Insulation (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

PURPOSE:To reliably detect an accident when an arc-involving accident is caused in respective parts in a vessel by forming a surface facing inside of the vessel of a light transmissive body arranged to block up a window part of the vessel as an incident surface, and arranging a diffusive part on this. CONSTITUTION:An annular peripheral wall part 3 is protrusively arranged in a peripheral part of a window part la arranged in a vessel 1, and a plate like light transmissive body 4 composed of a light transmissive material such as glass is embedded in the part 3, and a surface facing inside of the vessel 1 of the body 4 is formed as an incient surface 4a, and a diffusive part is arranged on this. In the case where a grounding accident or the like is caused in the vessel 1 and an arc is generated, when the arc light reaches the surface 4a of the body 4, it is uniformly diffused in the body 4 by a diffusing surface, and is made incident on receiving fiber 8. Since the fiber 8 receives this scattered light and transmits it toward a light receiving unit 9, a detecting signal is obtained from the unit 9. The fact that an accident is caused in the vessel 1 is detected. Thereby, even if an arc generating position exists in any place, detecting output not less than a constant value can be obtained.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、ガス絶縁開閉装置等の
ガス絶縁電気機器の内部で生じる地絡事故や短絡事故を
検出する内部事故検出装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal accident detecting device for detecting a ground fault accident or a short circuit accident occurring inside a gas insulated electric device such as a gas insulated switchgear.

【０００２】[0002]

【従来の技術】ガス絶縁開閉装置等のガス絶縁電気機器
において、容器内で地絡事故や短絡事故が生じた場合に
は、機器のいずれの箇所で事故が生じたのかを標定し
て、事故に迅速に対処する必要がある。そのため、地絡
事故や短絡事故が生じた場合に生じるアークの発光を検
出することにより、事故の発生を検出するようにした内
部事故検出装置が提案されている。2. Description of the Related Art In a gas-insulated electric device such as a gas-insulated switchgear, when a ground fault or a short-circuit accident occurs in a container, the location of the accident is identified to determine the accident. Need to be dealt with promptly. Therefore, there has been proposed an internal accident detection device that detects the occurrence of an accident by detecting the light emission of an arc that occurs when a ground fault accident or a short circuit accident occurs.

【０００３】図１０はアーク光を検出することにより内
部事故を検出するようにした従来の内部事故検出装置の
構成を示したもので、同図において１はガス絶縁開閉装
置の母線部分の金属容器、２は金属容器１内に配置され
た母線導体であり、容器１内にはＳＦ6 ガスが所定の圧
力で封入されている。容器１の壁部の一部を貫通させて
窓部１ａが設けられ、該窓部１ａの周辺部に突設された
周壁部３内にガラス板４´が嵌め込まれて、ガラス板４
´が窓部１ａの周辺部にパッキン５を介して当接されて
いる。周壁部３の開口部周辺に押え板６がネジ止めされ
てガラス板４´が固定されている。押え板６にはケース
７が接続され、該ケースの底壁部に設けられた開口部７
ａを通して該ケース内に挿入された受信用光ファイバ８
の一端の端末部８ａがガラス板４´の中央部に対向させ
られている。光ファイバ８の他端は図示しない受光器に
結合されている。図１０と同様に構成された内部事故検
出装置が、ガス絶縁開閉装置の他の容器にも取り付けら
れている。FIG. 10 shows the structure of a conventional internal accident detection device for detecting an internal accident by detecting an arc light. In FIG. 10, 1 is a metal container of a busbar portion of a gas insulated switchgear. Reference numeral 2 denotes a bus conductor arranged in the metal container 1, and SF 6 gas is sealed in the container 1 at a predetermined pressure. A window portion 1a is provided by penetrating a part of the wall portion of the container 1, and a glass plate 4'is fitted into a peripheral wall portion 3 projecting from the peripheral portion of the window portion 1a.
′ Is in contact with the peripheral portion of the window portion 1a via the packing 5. A pressing plate 6 is screwed around the opening of the peripheral wall 3 to fix a glass plate 4 '. A case 7 is connected to the holding plate 6, and an opening 7 is provided in the bottom wall of the case.
Optical fiber for reception 8 inserted in the case through a
The terminal portion 8a at one end of is opposed to the central portion of the glass plate 4 '. The other end of the optical fiber 8 is coupled to a light receiver (not shown). The internal accident detection device configured similarly to FIG. 10 is also attached to another container of the gas insulated switchgear.

【０００４】図１０に示した内部事故検出装置におい
て、例えば図示のＰ1 点で地絡事故が生じ、アークＡ1
が生じると、そのアーク光はガラス板４´を通して光フ
ァイバ８の端末部８ａに達するため、該アーク光が光フ
ァイバ８を通して図示しない受光器に達する。従って該
受光器より検出信号を得ることができ、容器１内で事故
が発生したことを検出することができる。In the internal accident detection system shown in FIG. 10, for example, a ground fault occurs at a point P1 shown in the figure, and an arc A1
When the arc occurs, the arc light reaches the end portion 8a of the optical fiber 8 through the glass plate 4 ', so that the arc light reaches the light receiver (not shown) through the optical fiber 8. Therefore, a detection signal can be obtained from the photodetector, and it can be detected that an accident has occurred in the container 1.

【０００５】[0005]

【発明が解決しようとする課題】図１０に示した内部事
故検出装置においては、受信用光ファイバ８の端末部か
らガラス板４´を通して見通すことができる箇所でアー
クＡ1 が発生したときにそのアーク光を検出して事故の
発生を検出し得るが、光ファイバ８の端末部８ａからは
見通すことができない点、例えば図示のＰ2 点でアーク
Ａ2 が発生した場合には、そのアーク光が直接光ファイ
バ８の端末部８ａに達しないため、アークＡ2 の発生を
適確に検出することができず、事故検出の信頼性が低い
という問題があった。また光ファイバ８の端末部８ａに
アーク光が達したとしても、そのアーク光の入射角が、
光ファイバに固有の入射角（数度ないし２０度）から外
れている場合には、光ファイバ内をアーク光が伝搬しな
いため、事故の検出を行うことができない。In the internal accident detecting device shown in FIG. 10, when the arc A1 occurs at a position where the end of the receiving optical fiber 8 can be seen through the glass plate 4 ', the arc is generated. Although it is possible to detect the occurrence of an accident by detecting light, a point that cannot be seen from the terminal portion 8a of the optical fiber 8, for example, when an arc A2 occurs at the point P2 shown in the figure, the arc light directly emits light. Since it does not reach the terminal portion 8a of the fiber 8, the occurrence of the arc A2 cannot be accurately detected, and the reliability of accident detection is low. Even if the arc light reaches the terminal portion 8a of the optical fiber 8, the incident angle of the arc light is
If the incident angle (several degrees to 20 degrees) peculiar to the optical fiber is deviated, the arc light does not propagate in the optical fiber, so that the accident cannot be detected.

【０００６】本発明の目的は、容器内の各部でアークを
伴う事故が生じた場合に、その事故を確実に検出するこ
とができるようにしたガス絶縁電気機器の内部事故検出
装置を提供することにある。An object of the present invention is to provide an internal accident detection device for a gas-insulated electric device, which is capable of surely detecting, when an accident accompanied by an arc occurs in each part in a container, the accident. It is in.

【０００７】[0007]

【課題を解決するための手段】本発明は、電気機器本体
を絶縁ガスが封入された容器内に収納してなるガス絶縁
電気機器の容器内で事故が発生したときに生じるアーク
を検出することによりガス絶縁電気機器の内部事故を検
出する装置に係わるものである。DISCLOSURE OF THE INVENTION The present invention is to detect an arc generated when an accident occurs in a container of a gas-insulated electric device in which a main body of the electric device is housed in a container in which an insulating gas is sealed. The present invention relates to a device for detecting an internal accident in a gas-insulated electric device.

【０００８】本発明においては、容器の壁部を貫通させ
て設けられた窓部を塞ぐように透光体を取り付け、該透
光体の容器内に臨む面を該透光体への入射面（光を入射
させる面）として、該入射面に散乱性を有する部分を設
けておく。そして、透光体を透過した光を一端側から受
け入れて光ファイバを通して伝送する光信号伝送手段を
設け、該光信号伝送手段の他端に受光器を結合する。In the present invention, a light-transmissive body is attached so as to close a window provided through the wall of the container, and the surface of the light-transmissive body facing the inside of the container is an incident surface to the light-transmissive body. As a (light incident surface), a portion having a scattering property is provided on the incident surface. Then, an optical signal transmission means for receiving the light transmitted through the translucent body from one end side and transmitting it through the optical fiber is provided, and the light receiver is coupled to the other end of the optical signal transmission means.

【０００９】ここで「透光体」とは、光を透過させる材
料からなる板状またはブロック状等の任意の形状の部材
である。検出しようとするアーク光は紫外領域、可視領
域及び赤外領域のあらゆる領域の波長成分を含むので、
透光体を形成する材料はいずれかの領域の波長成分の光
を透過させるものであればよいが、検出感度を高めるた
めには、受光器の感度が高い領域の波長成分を多く通過
させる特性を有する材料を用いるのが好ましい。透光体
を構成する材料としては、各種のガラス、アクリル等の
樹脂、弗化バリウム、弗化カルシウム等の赤外線透過性
を有する結晶体等を用いることができる。Here, the "translucent body" is a plate-shaped or block-shaped member made of a material that transmits light. Since the arc light to be detected contains wavelength components in all regions of ultraviolet region, visible region and infrared region,
The material forming the translucent body may be any material that transmits the light of the wavelength component of any region, but in order to increase the detection sensitivity, a characteristic that allows many wavelength components of the region where the light receiver has high sensitivity to pass through. It is preferable to use a material having As a material for forming the translucent body, various kinds of glass, resins such as acrylic resin, infrared ray transmissive crystals such as barium fluoride and calcium fluoride, and the like can be used.

【００１０】また本発明において「散乱性」とは、光を
散乱させる性質を意味する。透光体の入射面に散乱性を
持たせるには、例えば、該入射面にスリガラス処理のよ
うな散乱処理を施せばよい。また、透光体の入射面に散
乱処理を施す代りに、透光体の入射面を耐アーク性及び
散乱性を有する被膜（コーティングまたは薄膜）により
被覆することによっても散乱性を持たせることができ
る。In the present invention, the term "scattering property" means the property of scattering light. In order to make the incident surface of the translucent body have a scattering property, for example, the incident surface may be subjected to a scattering process such as a frosted glass process. Further, instead of performing the scattering treatment on the incident surface of the translucent body, the incident surface of the translucent body may be coated with a coating (coating or thin film) having arc resistance and scattering property so as to have the scattering property. it can.

【００１１】アークの発生を確実に検出するためには、
透光体の入射面の全体に散乱性を持たせる（入射面全体
を散乱面とする）のが好ましいが、場合によっては、透
光体の入射面の大部分に散乱性を持たせ、その一部を散
乱性を有しない部分として残しておくようにしてもよ
い。In order to reliably detect the occurrence of an arc,
It is preferable to make the entire incident surface of the light-transmitting body have a scattering property (the entire incident surface is a scattering surface), but in some cases, most of the incident surface of the light-transmitting member has a scattering property. You may make it leave one part as a part which does not have scattering property.

【００１２】上記のように、透光体の容器内に臨む面を
入射面として、該入射面に散乱性を持たせた部分を設け
ておくと、光信号伝送手段の受光部から見通すことがで
きない位置でアークが発生した場合でも、透光体の入射
面の散乱性を有する部分にアーク光が到達しさえすれ
ば、該アーク光が散乱されて透光体内に均等に入射す
る。このとき透光体の入射面をその反対側の面から見る
と、散乱性を有する部分が明るく輝いて見える。光信号
伝送手段は、透光体の入射面で均等に散乱されたアーク
光をその一端側の受光部から受け入れて受光器に伝搬さ
せるので、光信号伝送手段の受光部から見通すことがで
きない箇所でアークが発生した場合でも、そのアーク光
を捕らえて検出することができる。また透光体に対する
アーク光の入射角がいかなる場合でも、光信号伝送手段
の受光部に光を到達させることができるため、アーク光
の検出を確実に行わせることができ、内部事故を確実に
検出することができる。As described above, when the surface of the translucent body facing the inside of the container is used as the incident surface and a portion having a scattering property is provided on the incident surface, the light receiving portion of the optical signal transmission means can see through. Even if an arc is generated at a position where the arc cannot be generated, as long as the arc light reaches the scattering part of the incident surface of the transparent body, the arc light is scattered and uniformly enters the transparent body. At this time, when the light-incident surface of the light-transmitting body is viewed from the surface on the opposite side, the portion having the scattering property looks bright and bright. The optical signal transmission means receives the arc light that is evenly scattered on the incident surface of the translucent body from the light receiving portion on one end side thereof and propagates it to the light receiver, so that it cannot be seen through the light receiving portion of the optical signal transmission means. Even if an arc is generated at, the arc light can be caught and detected. Further, since the light can reach the light receiving portion of the optical signal transmission means regardless of the incident angle of the arc light with respect to the light-transmitting body, the arc light can be reliably detected, and the internal accident can be reliably performed. Can be detected.

【００１３】透光体の入射面の散乱性を有する部分で散
乱したアーク光を光信号伝送手段に導くための構造には
種々の態様が考えられる。Various modes are conceivable for the structure for guiding the arc light scattered by the scattering part of the incident surface of the light-transmitting body to the optical signal transmission means.

【００１４】例えば、上記透光体を板状に形成する場合
には、光信号伝送手段の一端の受光部を板状の透光体の
入射面（容器内に臨む面）と反対側の面に対向させた状
態で設ければよい。For example, when the transparent body is formed in a plate shape, the light receiving portion at one end of the optical signal transmitting means is a surface opposite to the incident surface (the surface facing the inside of the container) of the plate-shaped transparent body. It may be provided in a state of being opposed to.

【００１５】なお光信号伝送手段は、光ファイバのみで
構成してもよく、光ファイバと、該光ファイバの端部に
結合された端末部とにより構成してもよい。光ファイバ
の端末部は、光ファイバの端部の保護を図ったり、該光
ファイバの端部を適宜の取付け箇所に固定する場合にそ
の固定を容易にしたりするために設けられるもので、例
えば、光ファイバの端部を受け入れる筒状のケースと、
該ケースの開口部を閉じるように取り付けられた適宜の
光学素子（フィルタ、透明板またはコリメータレンズ
等）とにより構成される。The optical signal transmission means may be composed of only an optical fiber, or may be composed of an optical fiber and a terminal portion coupled to the end portion of the optical fiber. The end portion of the optical fiber is provided in order to protect the end portion of the optical fiber, or to facilitate the fixing when fixing the end portion of the optical fiber to an appropriate mounting location, for example, A cylindrical case that receives the end of the optical fiber,
It is composed of an appropriate optical element (filter, transparent plate, collimator lens, or the like) attached so as to close the opening of the case.

【００１６】光信号伝送手段を光ファイバのみにより構
成する場合には、該光ファイバの一端の端面そのものが
受光部となり、光ファイバとその端部に結合された端末
部とにより光伝送手段を構成する場合には、該端末部の
端面が受光部となる。When the optical signal transmission means is composed of only the optical fiber, the end face itself at one end of the optical fiber serves as a light receiving portion, and the optical transmission means is constituted by the optical fiber and the terminal portion coupled to the end portion. In this case, the end face of the terminal portion becomes the light receiving portion.

【００１７】また上記容器の外側に透光体を透過した光
を入射させる空洞を設けて該空洞の内面を反射面（光を
反射させる面）とし、光信号伝送手段の一端の受光部
を、空洞の外殻を貫通させて設けられた孔を通して該空
洞内に指向させるようにしてもよい。Further, a cavity for allowing the light transmitted through the light-transmitting body to enter is provided outside the container, and the inner surface of the cavity is used as a reflecting surface (a surface for reflecting light), and the light receiving portion at one end of the optical signal transmitting means is It may be directed into the cavity through a hole provided through the outer shell of the cavity.

【００１８】このように、ガラス板を透過した光を空洞
に入射させて該空洞の内面で反射させるようにすると、
空洞が積分球と同様の機能を果たすため、アーク光を高
感度で検出することができる。As described above, when the light transmitted through the glass plate is made incident on the cavity and reflected on the inner surface of the cavity,
Since the cavity functions similarly to the integrating sphere, the arc light can be detected with high sensitivity.

【００１９】また上記透光体として、容器の窓部を塞ぐ
ように設けられた板状部分と該板状部分に一体化された
球状部分とを有するものを用いることもできる。この場
合、透光体の板状部分の容器内に臨む面を入射面とし、
光信号伝送手段の一端の受光部を透光体の球状部分の外
面の一部に対向させた状態で配置する。透光体の外面の
光信号伝送手段の一端の受光部が対向する部分を除いた
部分には、該透光体内に入射した光を反射させる反射面
を形成しておく。Further, as the translucent body, it is possible to use a translucent body having a plate-shaped portion provided so as to close the window portion of the container and a spherical portion integrated with the plate-shaped portion. In this case, the surface of the translucent body facing the inside of the container is the incident surface,
The light receiving portion at one end of the optical signal transmission means is arranged so as to face a part of the outer surface of the spherical portion of the light transmitting body. On the outer surface of the light-transmitting body, a reflection surface for reflecting light incident on the light-transmitting body is formed in a portion except for a portion where one end of the light receiving portion of the optical signal transmitting means faces.

【００２０】このような透光体を用いると、入射面の散
乱性を有する部分で均等に散乱して透光体内に入射した
光が、該透光体内で反射を繰り返して光信号伝送手段の
受光部に達するため、アーク光を高感度で検出すること
ができる。When such a light-transmitting body is used, the light that is evenly scattered by the scattering portion of the incident surface and enters the light-transmitting body is repeatedly reflected in the light-transmitting body, and is repeatedly reflected in the light-transmitting means. Since it reaches the light receiving portion, the arc light can be detected with high sensitivity.

【００２１】また上記透光体を、容器の窓部の周辺部に
突設した周壁部内に嵌合した状態で設けて、該周壁部の
内面に沿う透光体の側面側に、該透光体内に入射した光
を反射させる反射面を設けるようにしてもよい。この場
合、光信号伝送手段は、その一端の受光部を透光体の入
射面と反対側の面に対向させた状態で設ける。透光体と
しては、円筒状、立方体状、横断面が多角形状を呈する
角柱状等任意の形状のものを用いることができる。Further, the above-mentioned light-transmitting body is provided in a state of being fitted into a peripheral wall portion projecting from a peripheral portion of a window portion of a container, and the light-transmitting body is provided on a side surface side of the light-transmitting body along an inner surface of the peripheral wall portion. You may make it provide the reflective surface which reflects the light which injected into the body. In this case, the optical signal transmission means is provided with the light receiving portion at one end thereof facing the surface opposite to the incident surface of the light transmitting body. The translucent body may have any shape such as a cylindrical shape, a cubic shape, and a prismatic shape having a polygonal cross section.

【００２２】このように構成した場合にも、透光体内に
入射した光が該透光体内で反射を繰り返して光信号伝送
手段の受光部に達するため、アーク光を高感度で検出す
ることができる。Even in the case of such a configuration, since the light incident on the light transmitting body is repeatedly reflected inside the light transmitting body and reaches the light receiving portion of the optical signal transmitting means, the arc light can be detected with high sensitivity. it can.

【００２３】本発明においてはまた、透光体を透過した
光を入射させる空洞を容器の外側に設けて、該空洞の外
殻を貫通させて設けた窓部を通して該空洞内にコーン状
の透光性ブロック（透光性を有するブロック）を、その
先端部を透光体に向けた状態で挿入し、該透光性ブロッ
クの後端面に受信用光ファイバの一端の受光部を対向さ
せるようにすることもできる。この場合、空洞内に位置
する透光性ブロックの表面は散乱性を有する面とし、空
洞の内面は光を反射させる反射面とする。Further, in the present invention, a cavity is provided outside the container for allowing the light transmitted through the light-transmitting body to enter, and a cone-shaped transparent member is provided in the cavity through a window portion penetrating the outer shell of the cavity. Insert a light-transmitting block (block having light-transmitting property) with its tip end facing the light-transmitting body, and make the light-receiving portion at one end of the receiving optical fiber face the rear end face of the light-transmitting block. You can also In this case, the surface of the light-transmitting block located inside the cavity is a surface having a scattering property, and the inner surface of the cavity is a reflecting surface that reflects light.

【００２４】このように構成すると、空洞の内面で反射
を繰り返すことにより積分された光をコーン状のガラス
ブロックの表面で散乱させて光信号伝送手段に導くこと
ができるため、より多くの光を受光器に導いて検出感度
を高めることができる。According to this structure, the light integrated by repeating reflection on the inner surface of the cavity can be scattered on the surface of the cone-shaped glass block and guided to the optical signal transmission means, so that more light can be transmitted. The detection sensitivity can be increased by guiding the light to a light receiver.

【００２５】本発明の検出装置において、透光体の入射
面が万一絶縁ガスの分解ガスにより腐食されると、検出
性能が低下するおそれがある。そこで、透光体の入射面
の腐食の程度をモニタし得るようにしておくのが好まし
い。そのためには、透光体の入射面の一部に散乱性を有
しない部分を残しておき、容器内にミラーを設けて該ミ
ラーを入射面の散乱性を有しない部分に対向配置する。
透光体の外側にはチェック光伝送手段を設けて、該チェ
ック光伝送手段の一端を透光体を介してミラーに指向さ
せる。そしてチェック光伝送手段の他端をチェック用光
源に結合し、該チェック用光源が発生する光をチェック
光伝送手段を通してミラーに与える。In the detection device of the present invention, if the incident surface of the light-transmitting body is corroded by the decomposed gas of the insulating gas, the detection performance may deteriorate. Therefore, it is preferable that the degree of corrosion of the incident surface of the light-transmitting body can be monitored. For that purpose, a part having no scattering property is left in a part of the incident surface of the light-transmitting body, a mirror is provided in the container, and the mirror is arranged so as to face the non-scattering part of the incident surface.
Check light transmitting means is provided outside the light transmitting body, and one end of the check light transmitting means is directed to the mirror through the light transmitting body. Then, the other end of the check light transmission means is coupled to the check light source, and the light generated by the check light source is given to the mirror through the check light transmission means.

【００２６】このように構成しておくと、ミラーで反射
したチェック用光源からの光を光信号伝送手段を通して
受光器により検出することによって透光体の入射面の腐
食の程度をモニタすることができるため、透光体の腐食
に適確に対処することができる。With this structure, the degree of corrosion of the incident surface of the light-transmitting body can be monitored by detecting the light from the check light source reflected by the mirror through the optical signal transmission means by the light receiver. Therefore, it is possible to appropriately deal with the corrosion of the translucent body.

【００２７】本発明において、光信号伝送手段の一端に
透光性を有する端末部が設けられている場合には、該端
末部の端面が光信号伝送手段の受光部となる。この場
合、該端末部の端面に散乱性を持たせるのが好ましい。
このように光信号伝送手段の一端の受光部に散乱性を持
たせておくと、光信号伝送手段への入射可能角度を広く
することができるため、検出を更に確実にすることがで
きる。In the present invention, when a light-transmitting terminal portion is provided at one end of the optical signal transmitting means, the end face of the terminal portion serves as a light receiving portion of the optical signal transmitting means. In this case, it is preferable that the end face of the terminal portion has a scattering property.
If the light receiving portion at one end of the optical signal transmission means is made to have a scattering property in this way, the incident angle to the optical signal transmission means can be widened, so that the detection can be further ensured.

【００２８】上記の各構成では、透光体が光信号伝送手
段と別個に設けられているが、該光信号伝送手段の一端
に、容器の窓部を気密に貫通した状態で取り付け得る端
末部が設けられている場合には、該端末部を透光体とし
て用いることもできる。この場合、光信号伝送手段の端
末部の端面を入射面として、該入射面に散乱性を有する
部分を設ける。In each of the above constructions, the translucent body is provided separately from the optical signal transmitting means, but a terminal portion which can be attached to one end of the optical signal transmitting means in a state where the window portion of the container is hermetically penetrated When the terminal is provided, the terminal portion can be used as a light-transmitting body. In this case, the end face of the terminal portion of the optical signal transmission means is used as the incident surface, and the incident surface is provided with a portion having a scattering property.

【００２９】[0029]

【作用】上記のように、ガス絶縁電気機器の容器に設け
た窓部を塞ぐように透光体を取り付け、該透光体の容器
内に臨む面を入射面として、該入射面に散乱性を有する
部分を設けておくと、光信号伝送手段の受光部から見通
すことができない位置でアークが発生した場合でも、透
光体の入射面の散乱性を有する部分にアーク光が到達し
さえすれば、該アーク光を光伝送手段を通して受光器に
伝えることができる。従って、光信号伝送手段の受光部
から見通すことができない箇所でアークが発生した場合
でも、そのアーク光を捕らえて、検出することができ
る。また透光体に対するアーク光の入射角がいかなる場
合でも、光信号伝送手段の受光部に光を到達させること
ができるため、アーク光の検出を確実に行わせることが
でき、内部事故を確実に検出することができる。As described above, the light-transmitting body is attached so as to close the window provided in the container of the gas-insulated electric equipment, and the surface of the light-transmitting body facing the inside of the container is used as the incident surface, and the light-scattering property is scattered on the incident surface. By providing a portion having an arc, even if an arc occurs at a position that cannot be seen through from the light receiving portion of the optical signal transmission means, the arc light may even reach the scattering portion of the incident surface of the translucent body. For example, the arc light can be transmitted to the light receiver through the optical transmission means. Therefore, even if an arc occurs at a place that cannot be seen through from the light receiving portion of the optical signal transmission means, the arc light can be caught and detected. Further, since the light can reach the light receiving portion of the optical signal transmission means regardless of the incident angle of the arc light with respect to the light-transmitting body, the arc light can be reliably detected, and the internal accident can be reliably performed. Can be detected.

【００３０】[0030]

【実施例】図１はガス絶縁開閉装置の母線部分に本発明
を適用した第１の実施例を示したものである。同図にお
いて１はガス絶縁開閉装置の母線部分の金属容器、２は
金属容器１内に配置された母線導体であり、容器１内に
はＳＦ6 ガスが所定の圧力で封入されている。容器１の
壁部の一部を貫通させて設けられた窓部１ａの周辺部に
環状の周壁部３が突設され、該周壁部３内にガラス等の
透光性を有する材料からなる板状の透光体４が嵌め込ま
れている。透光体４は窓部１ａの周辺部にパッキン５を
介して当接されている。周壁部３の開口部に設けられた
フランジ部に押え板６がネジ止めされて透光体４が容器
１に対して固定されている。本発明においては、透光体
４の容器１内に臨む面が入射面４ａとなっていて、該入
射面４ａに散乱性（光を散乱させる性質）を有する部分
が設けられている。この実施例では、入射面４ａの全体
にスリガラス処理等の散乱処理が施されて、該入射面４
ａの全体が散乱面（光を散乱させる面）となっている。FIG. 1 shows a first embodiment in which the present invention is applied to the busbar portion of a gas insulated switchgear. In the figure, 1 is a metal container of the busbar part of the gas insulated switchgear, 2 is a busbar conductor arranged in the metal container 1, and SF 6 gas is sealed in the container 1 at a predetermined pressure. An annular peripheral wall portion 3 is projectingly provided around a window portion 1a provided by penetrating a part of the wall portion of the container 1, and a plate made of a translucent material such as glass is provided in the peripheral wall portion 3. The light-transmitting body 4 is fitted. The translucent body 4 is in contact with the peripheral portion of the window portion 1a via a packing 5. The translucent body 4 is fixed to the container 1 by screwing a pressing plate 6 to a flange portion provided in the opening of the peripheral wall portion 3. In the present invention, the surface of the translucent body 4 facing the inside of the container 1 is the incident surface 4a, and the incident surface 4a is provided with a portion having a scattering property (a property of scattering light). In this embodiment, the entire incident surface 4a is subjected to scattering processing such as frosted glass processing,
The entire a is a scattering surface (a surface that scatters light).

【００３１】なお入射面４ａに散乱処理を施す代りに、
該入射面に耐アーク性、耐分解ガス性及び散乱性を有す
る材料（例えばポリテトラフルオルエチレン）からなる
コーティングを施したり、該入射面を耐アーク性、耐分
解ガス性及び散乱性を有する材料からなる薄膜で被覆し
たりすることによって、入射面４ａに散乱性を持たせる
ようにしてもよい。Instead of performing the scattering process on the incident surface 4a,
The incident surface is coated with a material (for example, polytetrafluoroethylene) having arc resistance, decomposition gas resistance, and scattering resistance, and the incident surface has arc resistance, decomposition gas resistance, and scattering resistance. The incident surface 4a may be made to have a scattering property by being covered with a thin film made of a material.

【００３２】透光体４はその横断面の輪郭が円形を呈す
るものでもよく、矩形状、正方形状など他の形状を呈す
るものでもよい。透光体４を嵌め込む周壁部３の断面形
状は透光体の形状に応じて適宜に設定する。The translucent body 4 may have a circular cross-sectional outline, or may have another shape such as a rectangular shape or a square shape. The cross-sectional shape of the peripheral wall portion 3 into which the translucent body 4 is fitted is set appropriately according to the shape of the translucent body.

【００３３】押え板６にはケース７が接続され、該ケー
スの底壁部に設けられた開口部７ａを通して該ケース内
に受信用光ファイバ８の一端が挿入されている。受信用
光ファイバ８の一端にはスリーブ状を呈する端末部８ａ
が嵌着され、該端末部８ａの前端に取り付けられた薄い
透光板８ｂに光ファイバ８の一端が対向させられてい
る。この例では、光ファイバ８と端末部８ａとにより光
信号伝送手段が構成されている。端末部８ａの前端に設
けられた透光板８ｂの外面８b1が光信号伝達手段の受光
部となっており、この例では、透光板８ｂの外面８b1
が、透光体４の入射面と同様な散乱面となっている。A case 7 is connected to the holding plate 6, and one end of a receiving optical fiber 8 is inserted into the case through an opening 7a provided in a bottom wall of the case. One end of the receiving optical fiber 8 has a sleeve-shaped terminal portion 8a.
Is fitted and one end of the optical fiber 8 is opposed to a thin light-transmitting plate 8b attached to the front end of the terminal portion 8a. In this example, the optical fiber 8 and the terminal portion 8a constitute an optical signal transmission means. The outer surface 8b1 of the light transmitting plate 8b provided at the front end of the terminal portion 8a serves as the light receiving portion of the optical signal transmitting means, and in this example, the outer surface 8b1 of the light transmitting plate 8b.
However, it is a scattering surface similar to the incident surface of the translucent body 4.

【００３４】透光板８ｂの外面８b1は透光体４の外面４
ｂに対向させられ、光ファイバ８の他端（光信号伝送手
段の他端）は受光器９に結合されている。受光器９はフ
ォトダイオード等の受光素子や該受光素子の出力を増幅
する増幅器等からなっていて、容器１内で発生したアー
ク光に相応した電気信号を判定回路に与える。判定回路
は例えば受光器の出力信号を所定のしきい値と比較する
比較器からなっていて、受光器９から所定のしきい値以
上の出力信号が発生したときに、アークを伴う事故が生
じたと判定する。The outer surface 8b1 of the translucent plate 8b is the outer surface 4 of the translucent body 4.
The other end of the optical fiber 8 (the other end of the optical signal transmission means) is made to face b, and is coupled to the light receiver 9. The light receiver 9 includes a light receiving element such as a photodiode and an amplifier that amplifies the output of the light receiving element, and gives an electric signal corresponding to the arc light generated in the container 1 to the determination circuit. The determination circuit includes, for example, a comparator that compares the output signal of the light receiver with a predetermined threshold value. When the output signal from the light receiver 9 is equal to or higher than the predetermined threshold value, an accident involving an arc occurs. It is determined that

【００３５】図１の実施例において、容器１内で地絡事
故等が生じてアークが発生すると、そのアーク光が透光
体４の入射面４ａに達する。透光体４の入射面４ａは散
乱面となっているため、透光体４に達した光は該透光体
４内に均等に散乱して受信用光ファイバ８に入射する。
このとき透光体４の入射面４ａを光ファイバ８の端末部
８ａ側から見ると該入射面４ａ全体が明るく輝いて見え
る。光ファイバ８は、この散乱光を受け入れて受光器９
に向けて伝送するため、該受光器から検出信号が得ら
れ、容器内で事故が生じたことが検出される。In the embodiment shown in FIG. 1, when an arc occurs due to a ground fault or the like in the container 1, the arc light reaches the incident surface 4a of the light transmitting body 4. Since the incident surface 4a of the transparent body 4 is a scattering surface, the light reaching the transparent body 4 is evenly scattered inside the transparent body 4 and is incident on the receiving optical fiber 8.
At this time, when the incident surface 4a of the translucent body 4 is viewed from the end portion 8a side of the optical fiber 8, the entire incident surface 4a looks bright and bright. The optical fiber 8 receives the scattered light and receives the light receiver 9
Since it is transmitted to the optical receiver, a detection signal is obtained from the optical receiver, and it is detected that an accident has occurred in the container.

【００３６】従って上記実施例によれば、アークの発生
位置がいかなる場合でも、一定値以上の検出出力を得る
ことができ、光信号伝送手段の受光部（透光板８ｂの外
面８b1）から見通すことができる図示のＰ1 点で発生し
たアークＡ1 を検出することができるのはもちろん、該
受光部から見通すことができないＰ2 点で発生したアー
クＡ2 をも検出することができる。Therefore, according to the above embodiment, it is possible to obtain a detection output above a certain value regardless of the position where the arc is generated, and it is possible to see through from the light receiving portion (the outer surface 8b1 of the transparent plate 8b) of the optical signal transmission means. It is possible not only to detect the arc A1 generated at the point P1 shown in the drawing, but also to detect the arc A2 generated at the point P2 which cannot be seen through from the light receiving portion.

【００３７】光ファイバ８の開口数ＮＡ（入射可能最大
角度の正弦値）は、０．２〜０．５程度であり、光ファ
イバに入射可能な角度範囲は非常に小さい（数度〜１５
度程度）が、上記実施例のように、光ファイバ８の端末
部に設けた透光板の外面８b1を散乱面としておくと、光
ファイバ８への入射可能角度範囲を広くすることができ
るため、検出動作を更に確実にすることができる。The numerical aperture NA (the sine value of the maximum incident angle) of the optical fiber 8 is approximately 0.2 to 0.5, and the angle range in which the optical fiber 8 can be incident is extremely small (several degrees to 15 degrees).
However, if the outer surface 8b1 of the translucent plate provided at the end of the optical fiber 8 is used as a scattering surface as in the above-described embodiment, the incident angle range to the optical fiber 8 can be widened. The detection operation can be made more reliable.

【００３８】図９は光ファイバ８の端末部に設けた透光
板８ｂの外面８b1を散乱面としない場合と、散乱面とし
た場合とについて、光ファイバ８への入射角と、入射す
る光の強度との関係を示したもので、同図において曲線
ａは透光板の外面８b1を散乱面としない場合を示し、曲
線ｂは散乱面とした場合を示している。このように、光
ファイバ８の端末部に設けた透光板の外面８b1（光信号
伝送手段の受光部）を散乱面としておくと、光ファイバ
８の指向性をなくしてその入射可能角度範囲を広くする
ことができるため、検出性能を高めて容器内で生じたア
ーク光の検出を更に確実に行わせることができる。FIG. 9 shows the incident angle to the optical fiber 8 and the incident light when the outer surface 8b1 of the transparent plate 8b provided at the end of the optical fiber 8 is not a scattering surface and is a scattering surface. The curve a shows the case where the outer surface 8b1 of the translucent plate is not used as the scattering surface, and the curve b shows the case where the scattering surface is used. Thus, if the outer surface 8b1 (light receiving portion of the optical signal transmission means) of the light transmitting plate provided at the end of the optical fiber 8 is used as the scattering surface, the directivity of the optical fiber 8 is lost and the incident angle range is reduced. Since the width can be widened, the detection performance can be improved and the arc light generated in the container can be detected more reliably.

【００３９】なお上記のように光信号伝送手段の受光部
を散乱面とすると、受光器に達する光量は減少するが、
受信光量の減少は受光器の感度を上げることにより対処
できるので問題ない。When the light receiving portion of the optical signal transmitting means is a scattering surface as described above, the amount of light reaching the light receiver decreases,
There is no problem because the decrease in the amount of received light can be dealt with by increasing the sensitivity of the light receiver.

【００４０】ガス絶縁開閉装置のように、容器１内にＳ
Ｆ6 ガスが封入されている場合には、アーク発生時に生
じる分解ガスにより透光体４の入射面が腐食するおそれ
がある。透光体４の入射面が散乱面となっていない場合
には、透光体の入射面が腐食すると、その腐食による透
過光量の減少が検出動作に大きく影響する。これに対
し、上記実施例のように透光体４の入射面を当初から散
乱面としておくと、腐食に起因する散乱による透過光量
の減少の影響を少なくすることができる。Like the gas-insulated switchgear, S is placed inside the container 1.
When the F 6 gas is enclosed, the incident surface of the light-transmitting body 4 may be corroded by the decomposition gas generated when the arc is generated. If the incident surface of the translucent body 4 is not a scattering surface and the incident surface of the translucent body is corroded, the reduction in the amount of transmitted light due to the corrosion greatly affects the detection operation. On the other hand, if the incident surface of the light transmissive body 4 is made to be a scattering surface from the beginning as in the above-described embodiment, the influence of the decrease in the amount of transmitted light due to scattering due to corrosion can be reduced.

【００４１】また透光体の入射面に耐分解ガス性と散乱
性とを有するコーティングを施したり、同様の材料の薄
膜を貼り付けたりすることにより散乱性を持たせるよう
にすると、耐分解ガス性を改善することができる。If the incident surface of the light-transmitting body is provided with a coating having a decomposition gas resistance and a scattering property, or if a thin film of the same material is attached so as to have the scattering property, the decomposition gas resistance is improved. The sex can be improved.

【００４２】図２は本発明の第２の実施例を示したもの
で、この実施例では、押え板６に筒体１０の開口部が接
続され、押え板６と筒体１０とにより空洞１１が構成さ
れている。空洞１１の内面１１ａは、光を乱反射させる
乱反射面となっている。この乱反射面は、例えば、筒体
１０の内面及び押え板６の筒体１０内に臨む面にフッ化
マグネシウム等の散乱反射塗料１３を塗布することによ
り形成できる。空洞１１の外殻を構成する筒体１０の壁
部を貫通させて孔１０ｂが設けられ、受信用光ファイバ
８の一端の端末部８ａが孔１０ｂを通して空洞内に指向
されている。この実施例でも、透光体４の入射面４ａ及
び、光ファイバ８の端末部８ａの透光板８ｂの外面８b1
は散乱面となっている。光ファイバ８の他端は受光器に
結合されている。筒体１０の断面形状は円形でもよく、
正方形等の角形でもよい。FIG. 2 shows a second embodiment of the present invention. In this embodiment, the opening of the cylindrical body 10 is connected to the holding plate 6 and the cavity 11 is formed by the holding plate 6 and the cylindrical body 10. Is configured. The inner surface 11a of the cavity 11 is a diffuse reflection surface that diffusely reflects light. This irregular reflection surface can be formed, for example, by applying a scattering reflection paint 13 such as magnesium fluoride to the inner surface of the cylinder 10 and the surface of the holding plate 6 facing the inside of the cylinder 10. A hole 10b is provided so as to penetrate the wall portion of the cylindrical body 10 forming the outer shell of the cavity 11, and the terminal portion 8a at one end of the receiving optical fiber 8 is directed into the cavity through the hole 10b. Also in this embodiment, the incident surface 4a of the light transmitting body 4 and the outer surface 8b1 of the light transmitting plate 8b of the terminal portion 8a of the optical fiber 8 are formed.
Is a scattering surface. The other end of the optical fiber 8 is coupled to the light receiver. The cross-sectional shape of the cylindrical body 10 may be circular,
It may be a square or other square.

【００４３】図２のように構成すると、アークＡ1 によ
り生じた光は、透光体４の入射面４ａで散乱させられて
透光体４内にほぼ均等に分散して入射する。透光体４を
通過した光は空洞１１内に入射して該空洞の内面（乱反
射面）１０ａにより乱反射させられるため、空洞１１が
積分球と同様に働き、入射光が積分される。積分された
アーク光は受信用光ファイバ８を通して受光器に与えら
れる。With the structure shown in FIG. 2, the light generated by the arc A1 is scattered by the incident surface 4a of the light-transmitting body 4 and is dispersed and incident on the light-transmitting body 4 substantially evenly. The light that has passed through the translucent body 4 enters the cavity 11 and is diffusely reflected by the inner surface (irregular reflection surface) 10a of the cavity 11, so that the cavity 11 functions like an integrating sphere and the incident light is integrated. The integrated arc light is given to the light receiver through the receiving optical fiber 8.

【００４４】このように内面を乱反射面とした空洞を設
けて該空洞内に光信号伝送手段の一端の受光部を指向さ
せると、透光体４を通過した光が積分されて光信号伝送
手段に到達するため、検出感度を高めて内部事故の検出
を確実にすることができる。図２の実施例のように、空
洞１１内で、入射したアーク光を積分するようにする
と、アークの発生場所の如何にかかわらず光ファイバ８
に到達する光の光量をほぼ均一化することができるた
め、透光体４の入射面４ａの散乱処理を省略することが
できる。When the cavity having the irregular surface as the inner surface is provided and the light receiving portion at one end of the optical signal transmitting means is directed into the cavity, the light passing through the light transmitting body 4 is integrated and the optical signal transmitting means is integrated. Therefore, the detection sensitivity can be increased to ensure the detection of the internal accident. When the incident arc light is integrated in the cavity 11 as in the embodiment of FIG. 2, the optical fiber 8 is irrespective of where the arc is generated.
Since it is possible to make the amount of light reaching the light source substantially uniform, it is possible to omit the scattering process on the incident surface 4a of the light transmitting body 4.

【００４５】なお図２の実施例において、光ファイバ８
の一端の端末部の透光板８ｂの外面の散乱処理は省略す
ることができる。In the embodiment of FIG. 2, the optical fiber 8
The scattering process on the outer surface of the transparent plate 8b at the terminal portion at one end of can be omitted.

【００４６】図３は本発明の更に他の実施例を示したも
ので、この実施例では、板状部分１５と該板状部分の一
面側に一体化された球状部分１６とを有する透光体１７
が用いられている。透光体１７の板状部分１５がガス絶
縁開閉装置の容器１の窓部１ａの周辺部に設けられた周
壁部３内に嵌め込まれて、押え板６により固定されてい
る。透光体１７の球状部分１６の外面はその一部１６ａ
を除いて反射面を内側に向けたミラー膜１８により被覆
され、透光性ブロック１７の球状部分１６の外面のミラ
ー膜１８により被覆されていない部分１６ａに受信用光
ファイバ８の一端の端末部８ａが対向配置されている。
受信用光ファイバ８の他端は受光器に結合されている。
透光体１７の板状部分１５の容器１内に臨む面が透光体
１７の入射面１５ａとなっており、該入射面１５ａが散
乱面となっている。FIG. 3 shows still another embodiment of the present invention. In this embodiment, a light transmitting member having a plate-shaped portion 15 and a spherical portion 16 integrated on one side of the plate-shaped portion. Body 17
Is used. The plate-shaped portion 15 of the translucent body 17 is fitted in the peripheral wall portion 3 provided in the peripheral portion of the window portion 1a of the container 1 of the gas insulated switchgear and is fixed by the holding plate 6. The outer surface of the spherical portion 16 of the translucent body 17 has a portion 16a.
Except the above, a portion of the outer surface of the spherical portion 16 of the translucent block 17 which is covered by the mirror film 18 and which is not covered by the mirror film 18 has a terminal portion at one end of the receiving optical fiber 8. 8a are arranged to face each other.
The other end of the receiving optical fiber 8 is coupled to the light receiver.
The surface of the plate-shaped portion 15 of the translucent body 17 that faces the inside of the container 1 is an incident surface 15a of the translucent body 17, and the incident surface 15a is a scattering surface.

【００４７】図３の実施例においては、透光体１７の板
状部分１５に入射したアーク光が球状部分１６内で反射
を繰り返すため、透光体１７が積分球と同様の動作を
し、積分された光が光ファイバ８に到達する。In the embodiment of FIG. 3, since the arc light incident on the plate-shaped portion 15 of the light transmitting body 17 is repeatedly reflected in the spherical portion 16, the light transmitting body 17 operates in the same manner as the integrating sphere, The integrated light reaches the optical fiber 8.

【００４８】図３の実施例において、光ファイバ８の端
末部８ａの受光面は散乱処理が施されていてもよく、散
乱処理が施されていなくてもよい。In the embodiment of FIG. 3, the light receiving surface of the terminal portion 8a of the optical fiber 8 may or may not have been subjected to the scattering treatment.

【００４９】図４は本発明の更に他の実施例を示したも
ので、この実施例においては、キュービック状または円
柱状の透光体２０が設けられ、この透光体２０は、容器
１の窓部１ａの周辺部に突設された奥行きの深い周壁部
３内に嵌合されて押え板６により固定されている。周壁
部３の断面形状は、透光体２０の形状に応じて適宜に設
定される。透光体２０の容器１内に臨む入射面２０ａは
散乱面となっている。透光体２０の外面は、その他端の
端面の中央部２０ｂを除いて反射面を内側に向けたミラ
ー膜２１により被覆され、透光体２０のミラー膜２１が
形成されていない部分２０ｂに受信用光ファイバ８の一
端の端末部８ａが対向配置されている。光ファイバの端
末部８ａの前端には透光板８ｂが取り付けられ、透光板
８ｂの外面も散乱面となっている。受信用光ファイバ８
の他端は受光器に結合されている。FIG. 4 shows still another embodiment of the present invention. In this embodiment, a cubic or cylindrical light-transmitting body 20 is provided, and this light-transmitting body 20 is of the container 1. It is fitted in a peripheral wall portion 3 having a deep depth, which is provided so as to project from the peripheral portion of the window portion 1 a, and is fixed by a holding plate 6. The cross-sectional shape of the peripheral wall portion 3 is appropriately set according to the shape of the translucent body 20. The incident surface 20a of the translucent body 20 facing the container 1 is a scattering surface. The outer surface of the translucent body 20 is covered with a mirror film 21 having a reflective surface facing inward except for the central portion 20b of the end face at the other end, and is received by a portion 20b of the translucent body 20 where the mirror film 21 is not formed. The terminal portion 8a at one end of the optical fiber 8 is arranged to face. A transparent plate 8b is attached to the front end of the terminal portion 8a of the optical fiber, and the outer surface of the transparent plate 8b is also a scattering surface. Optical fiber for reception 8
The other end of is coupled to the light receiver.

【００５０】図５は図４の実施例の変形例を示したもの
で、この例では、光ファイバ８の端末部８ａの受光面
（透光板８ｂの外面）の散乱処理が省略され、代りに、
透光体２０の他端の端面のミラー膜２１が形成されてい
ない部分２０ｂに散乱性を有する部分２０b1が設けられ
ている。その他の点は図４の実施例と同様である。FIG. 5 shows a modification of the embodiment shown in FIG. 4, in which the scattering process of the light receiving surface of the terminal portion 8a of the optical fiber 8 (outer surface of the transparent plate 8b) is omitted, and instead, To
A portion 20b1 having a scattering property is provided on a portion 20b on the other end face of the light transmitting body 20 where the mirror film 21 is not formed. The other points are similar to those of the embodiment shown in FIG.

【００５１】図４または図５に示した実施例において
は、透光体２０に入射したアーク光がその内部で反射を
繰り返して光ファイバ８に入射するため、透光体２０に
入射したアーク光が積分されて光ファイバ８に到達す
る。従ってこれらの実施例においても、図２または図３
の実施例と同様の効果を得ることができる。In the embodiment shown in FIG. 4 or FIG. 5, the arc light incident on the light-transmitting body 20 is repeatedly reflected inside and enters the optical fiber 8, so that the arc light entering the light-transmitting body 20 is reflected. Is integrated and reaches the optical fiber 8. Therefore, also in these examples, FIG.
It is possible to obtain the same effect as that of the embodiment.

【００５２】図４の実施例において、光ファイバ８の端
末部８ａの受光面は散乱性を有しない面であってもよ
い。また図５の実施例において、透光体２０のミラー膜
が形成されていない部分２０ｂの散乱性を有する部分２
０b1は省略してもよい。In the embodiment of FIG. 4, the light receiving surface of the terminal portion 8a of the optical fiber 8 may be a surface having no scattering property. Further, in the embodiment of FIG. 5, the portion 2b having the scattering property of the portion 20b of the translucent body 20 where the mirror film is not formed.
0b1 may be omitted.

【００５３】図４及び図５に示した実施例において、透
光体２０の外面を覆うミラー膜２１は、周壁部３の内面
に沿う側面部にのみ設けてもよい。また透光体２０の側
面を覆うようにミラー膜を設ける代りに、周壁部３の内
面にミラー膜を設けるようにしてもよい。In the embodiment shown in FIGS. 4 and 5, the mirror film 21 covering the outer surface of the light transmitting body 20 may be provided only on the side surface portion along the inner surface of the peripheral wall portion 3. Further, instead of providing the mirror film so as to cover the side surface of the translucent body 20, a mirror film may be provided on the inner surface of the peripheral wall portion 3.

【００５４】図６は本発明の更に他の実施例を示したも
ので、この実施例では、容器１の壁部を貫通させて設け
られた窓部１ａの周辺部に突設された周壁部３内に透光
体４が嵌め込まれ、不透明な材料により箱形または円筒
形に形成されたケース２５の天井壁２５ａが周壁部３の
端部にボルト止めされている。透光体４はケースの天井
壁２５ａにより周壁部３内に押え込まれた状態で固定さ
れている。ケース２５の天井壁２５ａには開口部２５a1
が形成され、透光体４を透過した光が開口部２５a1を通
してケース２５内に入射させられている。ケース２５の
底壁部２５ｂの中央部に窓部２５b1が形成され、この窓
部２５b1を通してケース２５内に、ガラス等の透明材料
からなるコーン状の透光性ブロック２６が、その先端２
６ａを透光体４側に向けた状態で挿入されている。この
実施例では、ケース２５により空洞が構成され、該空洞
の内面２５ｃは乱反射面となっている。この乱反射面
は、フッ化マグネシウム等の散乱反射塗料１３を塗布す
ることにより形成される。また透光体４の容器１内に臨
む入射面４ａは散乱面となっている。FIG. 6 shows still another embodiment of the present invention. In this embodiment, the peripheral wall portion protruding from the peripheral portion of the window portion 1a provided through the wall portion of the container 1 is provided. A translucent body 4 is fitted in the casing 3, and a ceiling wall 25a of a case 25 formed of an opaque material in a box shape or a cylindrical shape is bolted to an end portion of the peripheral wall portion 3. The translucent body 4 is fixed in a state of being pressed into the peripheral wall portion 3 by the ceiling wall 25a of the case. The opening 25a1 is formed in the ceiling wall 25a of the case 25.
Is formed, and the light transmitted through the translucent body 4 is incident on the case 25 through the opening 25a1. A window portion 25b1 is formed in the center of the bottom wall portion 25b of the case 25, and a cone-shaped light-transmitting block 26 made of a transparent material such as glass is provided in the case 25 through the window portion 25b1.
6a is inserted with the light-transmitting body 6a facing the light-transmitting body 4 side. In this embodiment, the case 25 forms a cavity, and the inner surface 25c of the cavity is a diffuse reflection surface. This irregular reflection surface is formed by applying a scattering reflection paint 13 such as magnesium fluoride. Further, the incident surface 4a of the translucent body 4 which faces the container 1 is a scattering surface.

【００５５】コーン状の透光性ブロック２６の後端面２
６ｂに受信用光ファイバ８の一端の端末部８ａ（光信号
伝送手段の受光部）が対向配置され、受信用光ファイバ
８の他端は図示しない受光器に結合されている。ケース
２５により構成された空洞内に位置する透光性ブロック
２６の表面２６ｃには光を散乱させる散乱処理が施され
ている。Rear end surface 2 of the cone-shaped transparent block 26
A terminal portion 8a (a light receiving portion of the optical signal transmitting means) at one end of the receiving optical fiber 8 is arranged to face 6b, and the other end of the receiving optical fiber 8 is coupled to a light receiver (not shown). The surface 26c of the translucent block 26 located in the cavity formed by the case 25 is subjected to a scattering process for scattering light.

【００５６】図６の実施例では、ケース２５により構成
された空洞内に入射した光が、該空洞の内面の乱反射面
により反射を繰り返してガラスブロック２６の散乱処理
が施された表面２６ｃに達する。ガラスブロック２６の
表面に達した光は散乱して該ガラスブロック２６内に均
等に分散して入射し、光ファイバ８の一端に入射する。In the embodiment of FIG. 6, the light that has entered the cavity formed by the case 25 is repeatedly reflected by the irregular reflection surface of the inner surface of the cavity and reaches the surface 26c of the glass block 26 which has been subjected to the scattering treatment. . The light reaching the surface of the glass block 26 is scattered, uniformly dispersed and incident on the glass block 26, and is incident on one end of the optical fiber 8.

【００５７】この実施例においても、透光体４に入射し
た光が空洞内で積分されるため、図２ないし図５の実施
例と同様の効果を得ることができる。またコーン状の透
光性ブロック２６を設けると、光信号伝送手段の受光部
に入射する光の角度成分を多くすることができるため、
検出感度を高めることができる。Also in this embodiment, since the light incident on the light transmitting body 4 is integrated in the cavity, the same effect as that of the embodiment of FIGS. 2 to 5 can be obtained. Further, by providing the cone-shaped light transmitting block 26, it is possible to increase the angular component of the light incident on the light receiving portion of the optical signal transmission means.
The detection sensitivity can be increased.

【００５８】図６の実施例において、光ファイバ８の端
末部８ａの受光面に散乱処理を施すこともできる。In the embodiment shown in FIG. 6, the light receiving surface of the terminal portion 8a of the optical fiber 8 may be subjected to scattering treatment.

【００５９】図７は本発明の更に他の実施例を示したも
ので、この実施例では、受信用光ファイバ８の一端に設
けられた端末部８ａが、ガス絶縁開閉装置の容器１の壁
部を貫通させて設けられた小さな窓部１ａを気密に貫通
した状態で該容器１内に挿入されている。受信用光ファ
イバ８の端末部８ａの前面には透光板８ｂが取り付けら
れていて、透光板８ｂの外面８b1が散乱面となってい
る。受信用光ファイバ８の他端は受光器に結合されてい
る。FIG. 7 shows still another embodiment of the present invention. In this embodiment, the terminal portion 8a provided at one end of the receiving optical fiber 8 is the wall of the container 1 of the gas insulated switchgear. It is inserted into the container 1 in a state in which the small window portion 1a provided by penetrating the portion is airtightly penetrated. A transparent plate 8b is attached to the front surface of the terminal portion 8a of the receiving optical fiber 8, and an outer surface 8b1 of the transparent plate 8b serves as a scattering surface. The other end of the receiving optical fiber 8 is coupled to the light receiver.

【００６０】図７の実施例では、光ファイバの一端に設
けられた端末部８ａ自体が透光体を構成しており、容器
１内で発生したアーク光が端末部８ａの先端の透光板８
ｂに直接到達する。透光板８ｂに到達した光はその外面
（入射面）の散乱面により散乱して均等に分散して光フ
ァイバ８の一端に入射するため、アークの発生場所の如
何に係わりなく、光ファイバ８に一定の光量以上の光を
入射することができる。In the embodiment of FIG. 7, the terminal portion 8a itself provided at one end of the optical fiber constitutes a light-transmitting body, and the arc light generated in the container 1 is a light-transmitting plate at the tip of the terminal portion 8a. 8
reach b directly. The light reaching the light transmitting plate 8b is scattered by the scattering surface of the outer surface (incident surface) thereof and is evenly dispersed and is incident on one end of the optical fiber 8. Therefore, regardless of where the arc is generated, the optical fiber 8b A certain amount of light or more can be incident on.

【００６１】図８は本発明の更に他の実施例を示したも
ので、この実施例では、容器１の壁部を貫通させて設け
られた窓部１ａを塞ぐように取り付けられた板状の透光
体４の内面４ａに散乱性を持たせる処理（散乱処理また
は散乱性被膜の接着等）を施す際に、その一部に散乱性
を有しない部分４a1が残される。容器１内にはミラー３
０が設けられて該ミラーが透光体４の内面の散乱性を有
しない部分４a1に対向配置されている。透光体４の外側
にはチェック光伝送手段を構成するチェック用光ファイ
バ３１が配置され、該光ファイバ３１の一端の端末部３
１ａが透光体４を介してミラー３０に指向されている。
チェック用光ファイバ３１の他端は図示しないチェック
用光源に結合されていて、該光源から光ファイバ３１と
透光体４の散乱性を有しない部分とを通してミラー３０
に光が照射され、ミラー３０で反射された光が透光体４
の散乱性を有しない部分を通して受信用光ファイバ８の
端末部８ａに入射するようになっている。FIG. 8 shows still another embodiment of the present invention. In this embodiment, a plate-like member attached so as to close the window 1a provided by penetrating the wall portion of the container 1 is shown. When a treatment for imparting a scattering property to the inner surface 4a of the light-transmitting body 4 (scattering treatment or adhesion of a scattering coating) is performed, a portion 4a1 having no scattering property is left. Mirror 3 in container 1
0 is provided so that the mirror is arranged so as to face the inner surface 4a1 of the translucent body 4 having no scattering property. A check optical fiber 31 constituting a check light transmission means is arranged outside the light transmitting body 4, and the terminal portion 3 at one end of the optical fiber 31 is arranged.
1 a is directed to the mirror 30 via the light transmitting body 4.
The other end of the check optical fiber 31 is coupled to a check light source (not shown), and the mirror 30 is passed from the light source through the optical fiber 31 and the non-scattering portion of the light-transmitting body 4.
The light reflected by the mirror 30 is radiated to the transparent body 4
The light is incident on the terminal portion 8a of the receiving optical fiber 8 through a portion having no scattering property.

【００６２】この実施例において、受信用光ファイバ８
の端末部８ａの受光面に散乱処理が施されていない場合
には、光ファイバ３１から出射した光の内、できるだけ
多くの部分を受信用光ファイバ８に入射させるように、
ミラー３０への入出射角θと受信用光ファイバ８への入
射角θ´とを選ぶことが必要であるが、光ファイバ８の
端末部８ａの受光面に散乱処理が施されている場合に
は、これらの角度をある程度自由に選定することができ
る。In this embodiment, the receiving optical fiber 8
When the light-receiving surface of the terminal portion 8a is not subjected to the scattering process, the light emitted from the optical fiber 31 is made to be incident on the receiving optical fiber 8 as much as possible.
It is necessary to select the angle of incidence / emission θ to the mirror 30 and the angle of incidence θ ′ to the receiving optical fiber 8, but when the light receiving surface of the terminal portion 8a of the optical fiber 8 is subjected to scattering processing. Can freely select these angles to some extent.

【００６３】図８の実施例のようにミラー３０とチェッ
ク光伝送手段を構成する光ファイバ３１とを設けておく
と、光ファイバ３１から出射した光を受信用光ファイバ
８で受けてその受信光量をチェックすることにより、腐
食に伴う透光体４の透過光量の低下やミラー３０の反射
率の低下をモニタすることができるので、分解ガスが事
故検出装置に与える影響を確認することができるだけで
なく、そのモニタ結果に基いて受光器の感度を調整する
ことにより、所定の検出感度を維持することができる。When the mirror 30 and the optical fiber 31 constituting the check light transmission means are provided as in the embodiment of FIG. 8, the light emitted from the optical fiber 31 is received by the receiving optical fiber 8 and the received light amount thereof is received. By checking, it is possible to monitor the decrease in the amount of transmitted light of the translucent body 4 and the decrease in the reflectance of the mirror 30 due to corrosion, so that it is possible to confirm only the effect of decomposed gas on the accident detection device. Instead, the predetermined detection sensitivity can be maintained by adjusting the sensitivity of the light receiver based on the monitoring result.

【００６４】またこの実施例によれば、容器１内で事故
が生じていない状態でチェック用光ファイバ３１から光
を出射させて、ミラー３０で反射した光を受信用光ファ
イバ８を通して受信することにより、装置が正常に動作
するか否かを確認することができる。Further, according to this embodiment, light is emitted from the check optical fiber 31 in a state where no accident occurs in the container 1, and the light reflected by the mirror 30 is received through the receiving optical fiber 8. This makes it possible to confirm whether or not the device operates normally.

【００６５】図８の実施例に示した構造は、図１の実施
例に適用することができるが、空洞内にチェック用光フ
ァイバ３１の一端を挿入することにより、図２及び図６
の実施例にも適用することができる。The structure shown in the embodiment of FIG. 8 can be applied to the embodiment of FIG. 1, but by inserting one end of the checking optical fiber 31 into the cavity, the structure shown in FIGS.
Can also be applied to the embodiment.

【００６６】図２の実施例及び図６の実施例において
は、空洞の内面を乱反射面としたが、この空洞の内面は
光を反射させる面（反射面）であればよく、ミラー面で
あってもよい。In the embodiment of FIG. 2 and the embodiment of FIG. 6, the inner surface of the cavity is a diffuse reflection surface, but the inner surface of this cavity may be a surface (reflection surface) that reflects light, and is a mirror surface. May be.

【００６７】図３の実施例においては、透光体１７の球
状部分１６の外面をミラー面で被覆するようにしたが、
球状部分１６の外面に散乱処理を施して、球状部分の内
側から見てその外面が乱反射面となるようにしてもよ
い。In the embodiment shown in FIG. 3, the outer surface of the spherical portion 16 of the translucent body 17 is covered with a mirror surface.
The outer surface of the spherical portion 16 may be subjected to scattering treatment so that the outer surface thereof becomes a diffuse reflection surface when viewed from the inside of the spherical portion.

【００６８】図４及び図５の実施例においては、透光体
２０の外面にミラー面を形成したが、透光体２０の外面
に散乱処理を施すようにしてもよい。また透光体２０を
取り囲む周壁部３の内面の反射率が高い場合には、透光
体２０の外面をミラー膜で被覆したり、該透光体の外面
に散乱処理を施したりしなくてもよい。Although the mirror surface is formed on the outer surface of the translucent body 20 in the embodiments of FIGS. 4 and 5, the outer surface of the translucent body 20 may be subjected to scattering treatment. If the inner surface of the peripheral wall 3 surrounding the translucent body 20 has a high reflectance, it is not necessary to coat the outer surface of the translucent body 20 with a mirror film or to apply a scattering treatment to the outer surface of the translucent body. Good.

【００６９】上記の実施例では、ガス絶縁開閉装置の母
線部分に適用したが、ガス絶縁開閉装置の他の部分や、
他のガス絶縁電気機器にも本発明の内部事故検出装置を
適用できるのはもちろんである。In the above embodiment, the invention was applied to the busbar part of the gas insulated switchgear, but other parts of the gas insulated switchgear, and
It goes without saying that the internal accident detection device of the present invention can be applied to other gas-insulated electric equipment.

【００７０】[0070]

【発明の効果】本発明によれば、透光体のガス絶縁電気
機器の容器内に臨む面を入射面として、該入射面に散乱
性を有する部分を設け、該散乱性を有する部分で散乱し
て透光体内を透過した光を光信号伝送手段を通して受光
器に導くようにしたので、透光体の入射面に入射したア
ーク光を均等に分散させて光信号伝送手段に入射させる
ことができ、光信号伝送手段の受光部から直接見通すこ
とができない位置でアークが発生した場合でも、そのア
ーク光を捕らえて検出することができ、内部事故の検出
を確実に行わせることができる。According to the present invention, the surface of the light-transmitting body facing the inside of the container of the gas-insulated electrical equipment is used as an incident surface, and a portion having a scattering property is provided on the incident surface, and the scattering portion scatters. Since the light transmitted through the light-transmitting body is guided to the light receiver through the optical signal transmitting means, the arc light incident on the incident surface of the light-transmitting body can be evenly distributed and made incident on the optical signal transmitting means. Even if an arc occurs at a position where it cannot be directly seen from the light receiving portion of the optical signal transmission means, the arc light can be caught and detected, and the internal accident can be surely detected.

【００７１】特に請求項３に記載した発明によれば、透
光体を透過した光を空洞に入射させて該空洞の内面で反
射させるようにしたので、空洞に積分球と同様の機能を
持たせてアーク光の検出感度を高めることができる。In particular, according to the invention described in claim 3, since the light transmitted through the transparent body is made incident on the cavity and reflected on the inner surface of the cavity, the cavity has a function similar to that of the integrating sphere. Therefore, the detection sensitivity of the arc light can be increased.

【００７２】更に、請求項４に記載した発明によれば、
球状部を有する透光体を設けて、該透光体の球状部の外
面に反射面を設けたので、透光体に積分球と同様の機能
を持たせて、アーク光を高感度で検出することができ
る。Further, according to the invention described in claim 4,
Since a light-transmitting body having a spherical portion is provided and a reflecting surface is provided on the outer surface of the spherical portion of the light-transmitting body, the light-transmitting body has a function similar to that of an integrating sphere, and arc light can be detected with high sensitivity. can do.

【００７３】また請求項５に記載した発明によれば、透
光体を容器に設けた窓部の周辺部に設けた周壁部内に嵌
合させた状態で取り付け、該周壁部の内面に沿う透光体
の側面側に反射面を設けることにより、透光体に入射し
た光がその内部で反射を繰り返して光信号伝送手段の受
光部に入射するようにしたので、透光体に積分球と同様
の機能を持たせて検出感度を高めることができる。According to the invention described in claim 5, the translucent body is attached in a state fitted in the peripheral wall portion provided in the peripheral portion of the window portion provided in the container, and the translucent member along the inner surface of the peripheral wall portion is attached. By providing a reflecting surface on the side surface of the optical body, the light incident on the translucent body is repeatedly reflected inside and enters the light receiving portion of the optical signal transmitting means. The detection sensitivity can be increased by providing the same function.

【００７４】更に請求項６に記載した発明によれば、透
光体を透過した光を入射させる空洞を設けて該空洞の内
面を反射面とし、表面に散乱性を持たせたコーン状の透
光性ブロックを空洞の外殻に設けられた孔を通して該空
洞内に挿入したので、空洞により積分された光をコーン
状の透光性ブロックの表面で散乱させて光信号伝送手段
に導くことができ、より多くの光を光信号伝送手段に導
いて検出感度を高めることができる。Further, according to the invention described in claim 6, there is provided a cavity into which the light transmitted through the light-transmitting body is made incident, and the inner surface of the cavity is used as a reflecting surface, and the surface of the cone-shaped transparent body has a scattering property. Since the optical block is inserted into the cavity through the hole provided in the outer shell of the cavity, the light integrated by the cavity can be scattered on the surface of the cone-shaped transparent block and guided to the optical signal transmission means. Therefore, more light can be guided to the optical signal transmission means to increase the detection sensitivity.

【００７５】また請求項７に記載した発明によれば、チ
ェック光伝送手段から出射させた光を容器内に設けたミ
ラーにより反射させて光信号伝送手段に導くようにした
ので、容器内に絶縁ガスの分解ガスが存在して透光体の
内面が腐食する恐れがある場合に、その腐食の程度をモ
ニタすることができ、透光体の腐食に適確に対処するこ
とができる。Further, according to the invention described in claim 7, since the light emitted from the check light transmission means is reflected by the mirror provided in the container and guided to the optical signal transmission means, it is insulated in the container. When there is a possibility that the inner surface of the light-transmitting body is corroded due to the presence of decomposed gas of the gas, the degree of the corrosion can be monitored, and the corrosion of the light-transmitting body can be appropriately dealt with.

【００７６】請求項８に記載した発明によれば、光信号
伝送手段の受光部に散乱性を持たせたので、光信号伝送
手段を構成する光ファイバへの入射可能角度を広くし
て、検出を確実にすることができる。According to the invention described in claim 8, since the light receiving portion of the optical signal transmitting means is provided with the scattering property, the incident angle to the optical fiber constituting the optical signal transmitting means is widened and the detection is performed. Can be ensured.

【００７７】請求項９に記載した発明によれば、光信号
伝送手段を構成する光ファイバの端末部自体を透光体と
して用いたので、構造を簡単にして、しかも内部事故の
検出を確実に行うことができる。According to the ninth aspect of the invention, since the terminal portion itself of the optical fiber forming the optical signal transmitting means is used as the light transmitting body, the structure is simplified and the internal accident is surely detected. It can be carried out.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の第１の実施例の要部を示した断面図で
ある。FIG. 1 is a sectional view showing an essential part of a first embodiment of the present invention.

【図２】本発明の第２の実施例の要部を示した断面図で
ある。FIG. 2 is a sectional view showing a main part of a second embodiment of the present invention.

【図３】本発明の第３の実施例の要部を示した断面図で
ある。FIG. 3 is a sectional view showing a main part of a third embodiment of the present invention.

【図４】本発明の第４の実施例の要部を示した断面図で
ある。FIG. 4 is a sectional view showing a main part of a fourth embodiment of the present invention.

【図５】本発明の第５の実施例の要部を示した断面図で
ある。FIG. 5 is a sectional view showing a main part of a fifth embodiment of the present invention.

【図６】本発明の第６の実施例の要部を示した断面図で
ある。FIG. 6 is a sectional view showing a main part of a sixth embodiment of the present invention.

【図７】本発明の第７の実施例の要部を示した断面図で
ある。FIG. 7 is a sectional view showing an essential part of a seventh embodiment of the present invention.

【図８】本発明の第８の実施例の要部を示した断面図で
ある。FIG. 8 is a sectional view showing an essential part of an eighth embodiment of the present invention.

【図９】光ファイバの端末部の入射面に散乱処理を施し
た場合と施さない場合とについて入射特性を比較して示
した線図である。FIG. 9 is a diagram showing incident characteristics of the case where the scattering process is applied to the incident surface of the end portion of the optical fiber and the case where the scattering process is not performed.

【図１０】従来の内部事故検出装置の要部を示した断面
図である。FIG. 10 is a sectional view showing a main part of a conventional internal accident detection device.

【符号の説明】 １ ガス絶縁開閉装置の容器 １ａ 窓部 ２ 母線導体 ３ 周壁部 ４ 透光体 ８ 光信号伝送手段を構成する光ファイバ ９ 受光器 １１ 空洞 １５ 板状部 １６ 球状部 １７ 透光体 ２０ 透光体 ２１ ミラー膜 ２５ 空洞を構成するケース ２６ コーン状の透光性ブロック ３０ ミラー ３１ チェック用光ファイバ[Explanation of reference numerals] 1 container of gas insulated switchgear 1a window 2 busbar conductor 3 peripheral wall 4 translucent body 8 optical fiber constituting optical signal transmission means 9 light receiver 11 cavity 15 plate-like portion 16 spherical portion 17 translucent Body 20 Light-transmitting body 21 Mirror film 25 Cavity forming case 26 Cone-shaped light-transmitting block 30 Mirror 31 Checking optical fiber

Claims (9)

【特許請求の範囲】[Claims] 【請求項１】 電気機器本体を絶縁ガスが封入された容
器内に収納してなるガス絶縁電気機器の前記容器内で事
故が発生したときに生じるアークを検出することにより
ガス絶縁電気機器の内部事故を検出する装置であって、 前記容器の壁部を貫通させて設けられた窓部を塞ぐよう
に取り付けられた透光体と、 前記透光体を透過した光を一端側から受け入れて光ファ
イバを通して伝送する光信号伝送手段と、 前記光信号伝送手段の他端に結合された受光器とを具備
し、 前記透光体の容器内に臨む面を該透光体の入射面とし
て、該入射面に散乱性を有する部分を設けたことを特徴
とするガス絶縁電気機器の内部事故検出装置。1. An inside of a gas-insulated electric device by detecting an arc generated when an accident occurs in the container of the gas-insulated electric device, wherein the main body of the electric device is housed in a container filled with an insulating gas. A device for detecting an accident, wherein a translucent body attached so as to close a window provided through the wall of the container and a light transmitted through the translucent body from one end An optical signal transmitting means for transmitting through a fiber, and a light receiver coupled to the other end of the optical signal transmitting means are provided, and a surface of the transparent body facing the inside of the container is used as an incident surface of the transparent body. An internal accident detection device for gas-insulated electrical equipment, characterized in that a scattering portion is provided on the incident surface. 【請求項２】 前記透光体は板状に形成され、 前記光信号伝送手段は、前記透光体の入射面と反対側の
面にその一端の受光部を対向させた状態で配置されてい
ることを特徴とする請求項１に記載のガス絶縁電気機器
の内部事故検出装置。2. The translucent body is formed in a plate shape, and the optical signal transmission means is arranged with a light receiving section at one end thereof facing the incident surface of the translucent body. The internal accident detection device for gas-insulated electrical equipment according to claim 1, wherein: 【請求項３】 前記透光体を透過した光を入射させる空
洞が前記容器の外側に配置され、 前記光信号伝送手段の一端の受光部が前記空洞の外殻を
貫通させて設けられた孔を通して該空洞内に指向され、 前記空洞の内面は光を反射する反射面となっていること
を特徴とする請求項１または２に記載のガス絶縁電気機
器の内部放電検出装置。3. A cavity through which the light transmitted through the translucent body is incident is arranged outside the container, and a light receiving portion at one end of the optical signal transmission means is provided through the outer shell of the cavity. The internal discharge detection device for gas-insulated electrical equipment according to claim 1 or 2, characterized in that the inner surface of the cavity is a reflection surface that reflects light. 【請求項４】 前記透光体は、前記容器の窓部を塞ぐよ
うに設けられた板状部分と該板状部分に一体化された球
状部分とを有していて、該透光体の板状部分の容器内に
臨む面が前記入射面となっており、 前記光信号伝送手段は、その一端の受光部を前記透光体
の球状部分の外面の一部に対向させた状態で配置され、 前記透光体の外面の前記光信号伝送手段の受光部が対向
する部分を除いた部分には、該透光体内に入射した光を
反射させる反射面が形成されていることを特徴とする請
求項１に記載のガス絶縁電気機器の内部事故検出装置。4. The light-transmitting body has a plate-shaped portion provided so as to close the window of the container and a spherical portion integrated with the plate-shaped portion, The surface of the plate-shaped portion facing the inside of the container is the incident surface, and the optical signal transmission means is arranged with the light receiving portion at one end thereof facing a part of the outer surface of the spherical portion of the translucent body. And a reflection surface for reflecting the light incident on the light-transmitting body is formed on a portion of the outer surface of the light-transmitting body except for a portion where the light-receiving portion of the optical signal transmitting unit faces. The internal accident detection device for gas-insulated electrical equipment according to claim 1. 【請求項５】 前記容器の窓部の周辺部に周壁部が突設
されて、該周壁部内に前記透光体が嵌合され、 前記周壁部の内面に沿う前記透光体の側面側には、該透
光体の入射面から該透光体内に入射した光を反射させる
反射面が設けられ、 前記光信号伝送手段は、その一端の受光部を前記透光体
の入射面と反対側の面に対向させた状態で設けられてい
ることを特徴とする請求項１に記載のガス絶縁電気機器
の内部事故検出装置。5. A peripheral wall portion is provided so as to project from a peripheral portion of a window portion of the container, the translucent body is fitted in the peripheral wall portion, and a side surface side of the translucent body along an inner surface of the peripheral wall portion is provided. Is provided with a reflecting surface for reflecting light that has entered the light-transmitting body from the light-incident surface of the light-transmitting body. The internal accident detection device for gas-insulated electric equipment according to claim 1, wherein the internal accident detection device is provided so as to face the surface of the gas insulation electric equipment. 【請求項６】 前記透光体を透過した光を入射させる空
洞が前記容器の外側に配置され、 前記空洞の外殻を貫通させて設けられた窓部を通して前
記空洞内にコーン状の透光性ブロックがその先端部を前
記透光体に向けた状態で挿入され、 前記光信号伝送手段は、その一端の受光部を前記透光性
ブロックの後端面に対向させた状態で設けられ、 前記空洞内に位置する透光性ブロックの表面は散乱性を
有する面となっており、 前記空洞の内面は光を反射させる反射面となっているこ
とを特徴とする請求項１または２に記載のガス絶縁電気
機器の内部事故検出装置。6. A cavity into which the light transmitted through the translucent body is incident is disposed outside the container, and a cone-shaped translucent light is transmitted into the cavity through a window portion penetrating an outer shell of the cavity. A transparent block is inserted with its tip end facing the translucent body, and the optical signal transmission means is provided with the light receiving part at one end thereof facing the rear end surface of the translucent block, The surface of the translucent block located in the cavity is a surface having a scattering property, and the inner surface of the cavity is a reflective surface for reflecting light. Internal accident detection device for gas-insulated electrical equipment. 【請求項７】 前記透光体の入射面の一部に散乱性を有
しない部分が残され、 前記容器内にミラーが設けられて該ミラーが前記透光体
の入射面の散乱性を有しない部分に対向配置され、 前記透光体の外側には一端が該透光体を介して前記ミラ
ーに指向されたチェック光伝送手段が配置され、 前記チェック光伝送手段の他端はチェック用光源に結合
されていることを特徴とする請求項１，２または３のい
ずれか１つに記載のガス絶縁電気機器の内部事故検出装
置。7. A portion of the incident surface of the translucent body having no scattering property is left, and a mirror is provided in the container so that the mirror has a scattering property of the incident surface of the translucent member. A check light transmission means, which is disposed opposite to the non-exposed portion, has one end directed to the mirror through the light transmission body outside the light transmission body, and the other end of the check light transmission means is a check light source. The internal accident detection device for gas-insulated electrical equipment according to any one of claims 1, 2 and 3, wherein 【請求項８】 前記光信号伝送手段は、光ファイバと、
該光ファイバの一端に結合された透光性を有する端末部
とを備えていて、該端末部の端面が該光信号伝送手段の
受光部となっており、該端末部の端面が散乱性を有する
面となっている請求項１，２，３，４，５，６または７
のいずれか１つに記載のガス絶縁電気機器の内部事故検
出装置。8. The optical signal transmission means comprises an optical fiber,
A light-transmitting terminal portion coupled to one end of the optical fiber, the end surface of the terminal portion serves as a light-receiving portion of the optical signal transmitting means, and the end surface of the terminal portion has a scattering property. Claims 1, 2, 3, 4, 5, 6 or 7 having a surface having
An internal accident detection device for gas-insulated electrical equipment according to any one of 1. 【請求項９】 前記光信号伝送手段は、光ファイバと該
光ファイバの一端に結合された透光性を有する端末部と
を備えていて、該端末部が前記容器の窓部を気密に貫通
した状態で該容器に固定され、該端末部が前記透光体を
構成していることを特徴とする請求項１に記載のガス絶
縁電気機器の内部事故検出装置。9. The optical signal transmission means comprises an optical fiber and a translucent terminal portion coupled to one end of the optical fiber, the terminal portion airtightly penetrating a window portion of the container. The internal accident detection device for a gas-insulated electric device according to claim 1, wherein the terminal part is fixed to the container in such a state that the terminal portion constitutes the translucent body.
JP1660994A 1994-02-10 1994-02-10 Internal accident detecting device for gas insulating electric equipment Withdrawn JPH07226131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1660994A JPH07226131A (en) 1994-02-10 1994-02-10 Internal accident detecting device for gas insulating electric equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1660994A JPH07226131A (en) 1994-02-10 1994-02-10 Internal accident detecting device for gas insulating electric equipment

Publications (1)

Publication Number Publication Date
JPH07226131A true JPH07226131A (en) 1995-08-22

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Application Number Title Priority Date Filing Date
JP1660994A Withdrawn JPH07226131A (en) 1994-02-10 1994-02-10 Internal accident detecting device for gas insulating electric equipment

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JP (1) JPH07226131A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0875972A1 (en) * 1997-04-16 1998-11-04 AEG Sachsenwerk GmbH Device for optical detection of arcing in switchgear
WO2007003529A1 (en) * 2005-06-30 2007-01-11 Siemens Aktiengesellschaft Gas-tight enclosure casing for a power transmitting device
JP2014525725A (en) * 2011-08-16 2014-09-29 シュナイダー エレクトリック ユーエスエイ インコーポレイテッド Adaptive luminescence detection for arc mitigation system
JP2017522569A (en) * 2014-07-28 2017-08-10 ゼネラル エレクトリック テクノロジー ゲゼルシャフト ミット ベシュレンクテル ハフツングＧｅｎｅｒａｌ Ｅｌｅｃｔｒｉｃ Ｔｅｃｈｎｏｌｏｇｙ ＧｍｂＨ Device for detecting partial discharge from gas-insulated high-voltage equipment
DE102019202363B4 (en) 2019-02-21 2022-10-06 Siemens Aktiengesellschaft Switchgear with an optical control system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0875972A1 (en) * 1997-04-16 1998-11-04 AEG Sachsenwerk GmbH Device for optical detection of arcing in switchgear
WO2007003529A1 (en) * 2005-06-30 2007-01-11 Siemens Aktiengesellschaft Gas-tight enclosure casing for a power transmitting device
US7692880B2 (en) 2005-06-30 2010-04-06 Siemens Aktiengesellschaft Gas-tight encapsulating enclosure for a power transmission device
JP2014525725A (en) * 2011-08-16 2014-09-29 シュナイダー エレクトリック ユーエスエイ インコーポレイテッド Adaptive luminescence detection for arc mitigation system
JP2017522569A (en) * 2014-07-28 2017-08-10 ゼネラル エレクトリック テクノロジー ゲゼルシャフト ミット ベシュレンクテル ハフツングＧｅｎｅｒａｌ Ｅｌｅｃｔｒｉｃ Ｔｅｃｈｎｏｌｏｇｙ ＧｍｂＨ Device for detecting partial discharge from gas-insulated high-voltage equipment
DE102019202363B4 (en) 2019-02-21 2022-10-06 Siemens Aktiengesellschaft Switchgear with an optical control system
US11605510B2 (en) 2019-02-21 2023-03-14 Siemens Aktiengesellschaft Switchgear with an optical monitoring system

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Effective date: 20010508