JPH0793064B2 - Bushing equipment - Google Patents
Bushing equipmentInfo
- Publication number
- JPH0793064B2 JPH0793064B2 JP2262551A JP26255190A JPH0793064B2 JP H0793064 B2 JPH0793064 B2 JP H0793064B2 JP 2262551 A JP2262551 A JP 2262551A JP 26255190 A JP26255190 A JP 26255190A JP H0793064 B2 JPH0793064 B2 JP H0793064B2
- Authority
- JP
- Japan
- Prior art keywords
- bushing
- shield ring
- flange
- porcelain
- cap
- 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.)
- Expired - Lifetime
Links
Landscapes
- Insulators (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、高電圧電気機器の口出し部に設けられ高圧
導体を外部に引き出すためのブッシング装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bushing device that is provided in a lead-out portion of a high-voltage electric device and draws out a high-voltage conductor to the outside.
一般的に電気機器の口出し部にはブッシングが設けられ
ているが、高電圧になるにつれてブッシングと頭部付近
における電界が集中し非常に厳しい状態になるため、頭
部に電界緩和用のシールドリングを取付け電解を緩和さ
せている。Generally, a bushing is provided at the lead-out part of electrical equipment, but as the voltage gets higher and the electric field near the head concentrates, it becomes a very severe state. Is attached to alleviate electrolysis.
第４図は例えば特開昭62−140314号公報に示されたこの
種従来のブッシング装置の概略構成を示す図である。図
において、（１）は例えば電力用ガス遮断器、変成器等
の電気機器、（２）はこの電気機器（１）上に載置され
外側に複数段の笠部（3a）が形成された碍管（３）内部
に電気機器（１）の口出し部と接続された中心導体（図
示せず）を収納するとともに頭部には中心導体を支持す
るフランジ（４）が設けられたブッシング、（５）はフ
ランジ（４）を介してブッシング（２）に接続され、内
部にセンタークランプ方式のためのコイルバネ（図示せ
ず）や電気機器（１）、ブッシング（２）内の絶縁油
（図示せず）の膨張・収縮による異常圧力を抑制するた
めの不活性ガス等が収納されたケース、（６）はこのケ
ース（５）の上部に設けられ中心導体と架線（11）とを
電気的に接続するための接続端子金具、（７）（８）
（９）はそれぞれ電界の集中する個所に設けられた電界
緩和用のシールドリング、（10）はシールドリング
（９）の上方に設けられた屋根形リングである。FIG. 4 is a diagram showing a schematic structure of a conventional bushing device of this type disclosed in, for example, Japanese Patent Laid-Open No. 62-140314. In the figure, (1) is an electric device such as an electric power gas circuit breaker and a transformer, (2) is mounted on the electric device (1), and a plurality of stages of cap portions (3a) are formed outside A bushing (5) in which a central conductor (not shown) connected to the lead-out portion of the electric device (1) is housed inside the porcelain insulator (3) and a flange (4) for supporting the central conductor is provided on the head. ) Is connected to the bushing (2) via a flange (4), and internally has a coil spring (not shown) for a center clamp system, an electric device (1), and insulating oil (not shown) in the bushing (2). ) A case containing an inert gas or the like for suppressing abnormal pressure due to expansion / contraction, (6) is provided above the case (5) and electrically connects the central conductor and the overhead wire (11). Connection terminal fittings for (7) (8)
(9) is a shield ring for relaxing the electric field, which is provided at a location where the electric field is concentrated, and (10) is a roof ring provided above the shield ring (9).
上記のように構成された従来のブッシング装置におい
て、雨天の際、雨水と一緒にクリースや空気中の汚損物
等が、接続端子金具（６）およびケース（５）に伝わっ
て碍管（３）の方に落下するが、屋根形リング（10）が
設けられているために直接碍管（３）の表面を流れるこ
とはなく、汚損による耐電圧低下や金属部分の腐食が防
止されている。In the conventional bushing device configured as described above, during rainy weather, creases and contaminants in the air are transmitted to the connection terminal fittings (6) and the case (5) together with rainwater, and the creases (3) Although it falls toward one side, it does not flow directly on the surface of the porcelain bushing (3) because the roof-shaped ring (10) is provided, and the withstand voltage drop due to stains and the corrosion of metal parts are prevented.
従来のブッシング装置は以上のように構成されているの
で、電気機器（１）の使用電圧の上昇に伴なってシール
ドリング（７）（８）（９）の径を大きくしなければな
らず、又、屋根形リング（10）の径も大きくしなければ
碍管（３）の汚損を防止できなくなるといった問題点が
あった。Since the conventional bushing device is configured as described above, it is necessary to increase the diameters of the shield rings (7), (8) and (9) as the working voltage of the electric device (1) increases. Further, there is a problem that it is impossible to prevent the porcelain pipe (3) from being soiled unless the diameter of the roof ring (10) is increased.
この発明は上記のような問題点を解消するためになされ
たもので、電気機器の使用電圧が上昇してもシールドリ
ング径を大きくする必要がなく、且つ屋根形リングがな
くとも碍管の汚損を防止できるブッシング装置を提供す
ることを目的とするものである。The present invention has been made to solve the above problems, it is not necessary to increase the diameter of the shield ring even if the operating voltage of the electric equipment rises, and the contamination of the porcelain tube is eliminated even without the roof ring. It is an object of the present invention to provide a bushing device that can be prevented.
この発明に係るブッシング装置は、外側に複数段の笠部
を有する碍管内部に中心導体を収納するとともに頭部に
上記中心導体を支持するフランジを有するブッシング
と、上記フランジの外縁部と上記碍管の笠部との間を遮
るように設けられ上記ブッシングの頭部近傍における電
界に応じた曲率半径Ｒに形成された湾曲状の第１のシー
ルドリングと、上記フランジの外縁部からさらに外方に
突出し最外縁部に湾曲部を有し且つその径が上記碍管の
笠部の径より大に形成された第２のシールドリングとを
備えたものである。A bushing device according to the present invention has a bushing having a flange for supporting the central conductor in a head portion while accommodating the central conductor inside the porcelain bushing having a plurality of cap portions on the outside, and an outer edge portion of the flange and the porcelain insulator A curved first shield ring that is provided so as to block the gap from the cap portion and has a radius of curvature R corresponding to the electric field near the head of the bushing, and projects further outward from the outer edge of the flange. A second shield ring having a curved portion at the outermost edge and having a diameter larger than that of the cap portion of the porcelain bushing is provided.
この発明における第１のシールドリングは電界の緩和を
行い、第２のシールドリングは碍管の汚損を防止する。The first shield ring in the present invention mitigates the electric field, and the second shield ring prevents the porcelain tube from being soiled.
以下、この発明の一実施例におけるブッシング装置を図
について説明する。第１図はこの発明の一実施例におけ
るブッシング装置の概略構成を示す図、第２図は第１図
におけるブッシング装置を示す平面図、第３図は第１図
におけるブッシング装置の要部を示す一部破断詳細図で
ある。図において、電気機器（１）、ブッシング
（２）、碍管（３）、笠部（3a）、フランジ（４）、ケ
ース（５）、接続端子金具（６）、シールドリング
（７）（８）および架線（11）は第４図における従来の
ものと同様なので説明を省略する。（12）はフランジ
（４）の外縁部に一端が固着されるとともに、他端は上
記外縁部と碍管（３）の笠部（3a）との間を遮るように
設けられ、且つ先端がブッシング（２）の頭部近傍にお
ける電界に応じた曲率半径Ｒの湾曲状に形成された第１
のシールドリング、（13）は一端が第１のシールドリン
グ（12）の一端側に押え金具（14）によって固定される
とともに、フランジ（４）の外縁部からさらに外方に延
出し最外端部に湾曲部が形成された第２のシールドリン
グで、最外端部の外形は碍管（３）の笠部（3a）の外径
より大に形成されている。尚、これら両シールドリング
（12）（13）は円周方向で２分割され、分割部にはシー
ル材（15）が充填され水密構造が形成されている。Hereinafter, a bushing device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a bushing device according to an embodiment of the present invention, FIG. 2 is a plan view showing the bushing device shown in FIG. 1, and FIG. 3 is a main part of the bushing device shown in FIG. FIG. In the figure, electric equipment (1), bushing (2), porcelain insulator (3), cap portion (3a), flange (4), case (5), connection terminal fitting (6), shield ring (7) (8) Since the overhead line (11) is the same as the conventional one in FIG. 4, its description is omitted. One end of the (12) is fixed to the outer edge of the flange (4), the other end is provided so as to block between the outer edge and the cap portion (3a) of the porcelain bushing (3), and the tip of the bushing is provided. (1) The first portion formed in a curved shape with a radius of curvature R according to the electric field near the head
The one end of the shield ring (13) is fixed to one end of the first shield ring (12) by the holding metal fitting (14), and further extends outward from the outer edge of the flange (4) to the outermost end. In the second shield ring having a curved portion formed, the outermost end portion is formed to have an outer diameter larger than the outer diameter of the cap portion (3a) of the porcelain bushing (3). The shield rings (12) and (13) are divided into two in the circumferential direction, and the divided portions are filled with the sealing material (15) to form a watertight structure.
上記のように構成されたこの発明の一実施例におけるブ
ッシング装置においては、第２のシールドリング（13）
の外径を碍管（３）の笠部（3a）の外径より大にしてい
るため、接続端子金具（６）、ケース（５）を伝って落
下する空気中の汚損物や水は、第２のシールドリング
（13）の外縁より四方に飛散して屋根形リングが無くと
も碍管（３）の笠部（3a）の表面には付着しない。又、
第１のシールドリング（12）は電気機器（１）の使用電
圧が上昇しても湾曲部の曲率半径Ｒを大きくするだけで
対処でき、径を大きくする必要もない。In the bushing device according to the embodiment of the present invention configured as described above, the second shield ring (13)
Since the outer diameter of is larger than the outer diameter of the cap portion (3a) of the porcelain bushing (3), contaminants and water in the air that fall along the connection terminal fittings (6) and the case (5) are Even if there is no roof ring by scattering from the outer edge of the second shield ring (13), it will not adhere to the surface of the cap portion (3a) of the insulator (3). or,
The first shield ring (12) can be dealt with only by increasing the radius of curvature R of the curved portion even if the operating voltage of the electric device (1) rises, and it is not necessary to increase the diameter.
以上のように、この発明によれば外側に複数段の笠部を
有する碍管内部に中心導体を収納するとともに頭部に上
記中心導体を支持するフランジを有するブッシングと、
上記フランジの外縁部と上記碍管の笠部との間を遮るよ
うに設けられ上記ブッシングの頭部近傍における電界に
応じた曲率半径Ｒに形成された湾曲状の第１のシールド
リングと、上記フランジの外縁部からさらに外方に突出
し最外縁部に湾曲部を有し且つその径が上記碍管の笠管
の径より大に形成された第２のシールドリングとを備え
たので、電気機器の使用電圧が上昇してもシールドリン
グ径を大きくする必要がなく、且つ屋根形リングがなく
とも碍管の汚損を防止できるブッシング装置を提供する
ことができるという効果を奏する。As described above, according to the present invention, a bushing having a flange for supporting the central conductor in the head portion while accommodating the central conductor inside the porcelain tube having a plurality of cap portions on the outside,
A curved first shield ring that is provided so as to block between the outer edge portion of the flange and the cap portion of the porcelain bushing, and has a radius of curvature R according to an electric field near the head of the bushing; And a second shield ring having a curved portion at the outermost edge and having a diameter larger than the diameter of the cap tube of the porcelain bushing, the use of the electric device Even if the voltage rises, there is an effect that it is not necessary to increase the diameter of the shield ring, and it is possible to provide a bushing device that can prevent the pollution of the porcelain bushing without the roof ring.
第１図はこの発明の一実施例におけるブッシング装置の
概略構成を示す図、第２図は第１図におけるブッシング
装置を示す平面図、第３図は第１図におけるブッシング
装置の要部を示す一部破断詳細図、第４図は従来におけ
るブッシング装置の概略構成を示す図である。 図において、（３）は碍管、（3a）は笠部、（４）はフ
ランジ、（12）は第１のシールドリング、（13）は第２
のシールドリングである。 尚、各図中同一符号は同一または相当部分を示す。FIG. 1 is a diagram showing a schematic configuration of a bushing device according to an embodiment of the present invention, FIG. 2 is a plan view showing the bushing device shown in FIG. 1, and FIG. 3 is a main part of the bushing device shown in FIG. FIG. 4 is a partially broken detailed view showing a schematic configuration of a conventional bushing device. In the figure, (3) is an insulator pipe, (3a) is a cap portion, (4) is a flange, (12) is a first shield ring, and (13) is a second shield ring.
It is a shield ring. In the drawings, the same reference numerals indicate the same or corresponding parts.
Claims (1)
心導体を収納するとともに頭部に上記中心導体を支持す
るフランジを有するブッシングと、上記フランジの外縁
部と上記碍管の笠部との間を遮るように設けられ上記ブ
ッシングの頭部近傍における電界に応じた曲率半径Ｒに
形成された湾曲状の第１のシールドリングと、上記フラ
ンジの外縁部からさらに外方に突出し最外縁部に湾曲部
を有し且つその径が上記碍管の笠部の径より大に形成さ
れた第２のシールドリングとを備えたことを特徴とする
ブッシング装置。1. A bushing having a flange for supporting the center conductor in a head portion, the bushing having a central conductor housed inside a porcelain insulator having a plurality of cap portions on the outside, and an outer edge portion of the flange and the cap portion of the porcelain insulator. A first shield ring having a curved shape, which is provided so as to block the gap between the bushings and has a radius of curvature R corresponding to an electric field in the vicinity of the head portion of the bushing, and the outermost edge portion which protrudes further outward from the outer edge portion of the flange. And a second shield ring having a curved portion and having a diameter larger than that of the cap portion of the porcelain bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2262551A JPH0793064B2 (en) | 1990-09-27 | 1990-09-27 | Bushing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2262551A JPH0793064B2 (en) | 1990-09-27 | 1990-09-27 | Bushing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04137320A JPH04137320A (en) | 1992-05-12 |
| JPH0793064B2 true JPH0793064B2 (en) | 1995-10-09 |
Family
ID=17377383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2262551A Expired - Lifetime JPH0793064B2 (en) | 1990-09-27 | 1990-09-27 | Bushing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0793064B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0766701B2 (en) * | 1985-12-13 | 1995-07-19 | 株式会社東芝 | Bushing |
-
1990
- 1990-09-27 JP JP2262551A patent/JPH0793064B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04137320A (en) | 1992-05-12 |
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