JPH0480611B2 - - Google Patents
Info
- Publication number
- JPH0480611B2 JPH0480611B2 JP61200719A JP20071986A JPH0480611B2 JP H0480611 B2 JPH0480611 B2 JP H0480611B2 JP 61200719 A JP61200719 A JP 61200719A JP 20071986 A JP20071986 A JP 20071986A JP H0480611 B2 JPH0480611 B2 JP H0480611B2
- Authority
- JP
- Japan
- Prior art keywords
- phase
- cone
- insulating spacer
- substrate
- conduit
- 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
- Installation Of Bus-Bars (AREA)
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は密閉式ガス絶縁開閉装置に使用される
三相絶縁スペーサの改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a three-phase insulating spacer used in a closed gas insulated switchgear.
（従来の技術）
一般にガス絶縁開閉装置はたとえばSF6ガス等
の絶縁耐力の高いガスを金属密閉容器内に圧縮封
入したものであり、機器の小形化をはかり、絶縁
耐力の向上を目ざす為、ますますガスを高圧縮化
し使用する傾向にある。その為、これに共通され
るガス区分および導体支持の目的で使用される絶
縁スペーサは、高い圧力条件下でも十分な強度を
有することが要求される。(Prior art) Gas insulated switchgear is generally a device in which a gas with high dielectric strength, such as SF 6 gas, is compressed and sealed in a metal sealed container.In order to downsize the equipment and improve dielectric strength, There is a tendency to use more and more highly compressed gas. Therefore, insulating spacers commonly used for the purpose of gas division and conductor support are required to have sufficient strength even under high pressure conditions.
従来の三相絶縁スペーサの一例を第３図ａ，ｂ
に示している。コーン状の基板部１に３本の導体
２を支持するためのコーン部３，４，５が配置さ
れ、タンク６のフランジ部７で固定されている。
一般的に、半径がＲ，板厚がＴの平板状の絶縁ス
ペーサに圧力Ｐが負荷されたときその中央部で得
られる最大応力〓maxは、
〓max〓Ｐ（Ｒ／Ｔ）2
で与えられる。Ｒ／Ｔの２乗に比例し、この関係
は最大応力〓maxがＲ／Ｔの２乗に比例すると
いう関係はコーン形状の絶縁スペーサにおいても
同様なことが言える。 An example of a conventional three-phase insulating spacer is shown in Figure 3 a and b.
It is shown in Cone parts 3, 4, and 5 for supporting three conductors 2 are arranged on a cone-shaped substrate part 1, and are fixed by a flange part 7 of a tank 6.
Generally, when a pressure P is applied to a flat insulating spacer with radius R and thickness T, the maximum stress 〓max obtained at the center is given by 〓max〓P(R/T) 2 . It will be done. This relationship is proportional to the square of R/T, and the same can be said of the cone-shaped insulating spacer as the maximum stress max is proportional to the square of R/T.
（発明が解決しようとする問題点）
上記の関係から絶縁スペーサの機械的強度を高
めて高い圧力条件下で使用するには、板厚Ｔを増
加させ、かつ半径Ｒを減少させれば十分な機械的
強度が得られると考えられるが、電気的特性の点
から上記のように板厚Ｔを増加させ、かつ半径Ｒ
を減少させるには困難が生じる。(Problem to be solved by the invention) From the above relationship, in order to increase the mechanical strength of the insulating spacer and use it under high pressure conditions, it is sufficient to increase the plate thickness T and decrease the radius R. It is thought that mechanical strength can be obtained, but from the viewpoint of electrical properties, the plate thickness T must be increased as described above, and the radius R
Difficulties arise in reducing the
また、第３図のように絶縁スペーサの中央部に
最大応力〓maxが生ずるため、三相絶縁スペー
サでは中央部あるいはコーン部３とコーン部４，
５のの谷間で幾何学的非対称及び基板部１とコー
ン部３〜５の剛性の差により局部的な応力集中が
生ずる。これは導体２が支持されるコーン部３〜
５が二等辺三角形の頂点に配置されていて幾何学
的非対称に形成されているからであり、このため
第４図ａ，ｂに示すように対称性を持たせて局部
的な応力集中を防止するようにしたものが従来技
術（特開昭55−18824号公報）である。すなわち、
第４図は４個のコーン部１１，１２，１３，１４
を等配置し、これらのうちコーン部１４を除きコ
ーン部１１，１２，１３において導体を支持させ
るように埋込金属を設けるようにしたものであ
る。しかしながら、第４図の場合には導体支持に
使用される剛性の高い埋込金属１５を有するコー
ン部１１，１２，１３と導体支持に使用されない
コーン部１４では剛性に差が生じる為、剛性の非
対称性による応力集中が生じることになる。 Furthermore, as shown in Fig. 3, the maximum stress max occurs at the center of the insulating spacer, so in a three-phase insulating spacer, the center or cone portion 3 and cone portion 4
A local stress concentration occurs between the valleys of 5 and 5 due to the geometrical asymmetry and the difference in rigidity between the substrate portion 1 and the cone portions 3 to 5. This is the cone portion 3 to which the conductor 2 is supported.
5 is placed at the apex of an isosceles triangle and is formed geometrically asymmetrically. Therefore, as shown in Figure 4 a and b, the symmetry is created to prevent local stress concentration. The prior art (Japanese Unexamined Patent Application Publication No. 18824/1983) is designed to do this. That is,
Figure 4 shows four cone parts 11, 12, 13, 14.
are arranged equally, and embedded metal is provided in the cone parts 11, 12, and 13 except for the cone part 14 so as to support the conductor. However, in the case of FIG. 4, there is a difference in rigidity between the cone parts 11, 12, 13 that are used to support the conductor and have the embedded metal 15 with high rigidity, and the cone part 14 that is not used to support the conductor. Stress concentration will occur due to asymmetry.
そこで、本発明は板厚を厚くすることなく、機
械的強度の高い三相絶縁スペーサを提供すること
を目的とする。 Therefore, an object of the present invention is to provide a three-phase insulating spacer with high mechanical strength without increasing the plate thickness.
（問題点を解決するための手段）
本発明は上記目的を達成するため、絶縁性ガス
が充填された管路内部に三相導体を配置し、上記
管路相互間を互いに連結区分し、上記管路内に配
置された三相導体を支持する三相絶縁スペーサに
おいて、冠状の基板部と、この基板部の周縁に配
置され上記管路のに連結するためのフランジ部と
が一体に形成されるとともに、上記基板部の底面
中央に断面が凸状に隆起した隆起部を有し、この
隆起部をのぞく基板部の底面に上記三相導体が貫
通固定され、かつ上記隆起部の中央の板厚が、上
記フランジ部と基板部との連結部近傍の板厚より
厚くしたことを特徴とするものである。
(Means for Solving the Problems) In order to achieve the above object, the present invention arranges a three-phase conductor inside a conduit filled with an insulating gas, connects and divides the conduit with each other, and In a three-phase insulating spacer that supports a three-phase conductor arranged in a conduit, a crown-shaped substrate part and a flange part arranged at the periphery of this substrate part and connected to the conduit are integrally formed. At the same time, the substrate part has a raised part having a convex cross section in the center of the bottom surface, and the three-phase conductor is fixed through the bottom surface of the board part except for this raised part, and a plate in the center of the raised part. It is characterized in that the thickness is greater than the plate thickness near the connecting portion between the flange portion and the base plate portion.
（作用）
上記構成によれば、板厚を厚くすることなく強
度の高い三相絶縁スペーサが得られる。(Function) According to the above configuration, a three-phase insulating spacer with high strength can be obtained without increasing the plate thickness.
（実施例）
以下、本発明の実施例について図面を参照して
説明する。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図は本発明による三相絶縁スペーサの一実
施例を示す断面図で、これは基板部Ｂとフランジ
部Ｆとから構成されている。基板部Ｂは全体とし
て冠状であつて、この基板部Ｂの周縁に配置され
管路２０にに連結するためのフランジ部Ｆとが一
体形成されるととも、上記基板部Ｂの底面中央に
断面が凸状に隆起した隆起部２１を有し、この隆
起部２１をのぞく基板部Ｂの底面に埋込金具２２
とともに三相導体２３が貫通固定され、かつ上記
隆起部２１中央の板厚が、上記フラジ部Ｆと基板
部Ｂとの連結部近傍の板厚より厚くしたタンク２
０のフランジ部２４で固定されている。 FIG. 1 is a cross-sectional view showing one embodiment of the three-phase insulating spacer according to the present invention, which is composed of a substrate portion B and a flange portion F. The base plate part B has a crown shape as a whole, and a flange part F disposed on the periphery of the base plate part B for connecting to the pipe line 20 is integrally formed, and a cross section is formed at the center of the bottom surface of the base plate part B. has a raised part 21 which is raised in a convex shape, and an embedded metal fitting 22 is provided on the bottom surface of the substrate part B excluding this raised part 21.
A three-phase conductor 23 is fixed through the tank 2, and the thickness of the central portion of the raised portion 21 is thicker than the thickness of the plate near the connecting portion between the flange portion F and the substrate portion B.
It is fixed by the flange part 24 of 0.
更に上記コーン部（第４図の１１，１２，１３
に相当する）の埋込金具２２の剛性と同等となる
ようにコーン部２５の部の板厚が厚くされてい
る。 Further, the cone portion (11, 12, 13 in Fig. 4)
The thickness of the cone portion 25 is increased so that the rigidity is equivalent to that of the embedded metal fitting 22 (corresponding to the above).
このような構成となつているので局部的な集中
応力が分散し、破壊強度が高くスペーサ端部の不
必要な板厚の増加がない。このことは第２図ａ，
ｂに示す応力分布図から明らかであり、ａは第４
図に示す従来技術の場合の例であり、ｂは本発明
の場合である。図中２６，２７はベクトルであ
り、２８，２９は圧縮力であり、３０，３１は引
張力である。この図から本願は従来技術に比べ
て、基板部のＢの中央部応力集中がなくなり、基
板部Ｂ全体に応力の分散化が図れ、これにより破
壊強度が向上する。 With this configuration, local concentrated stress is dispersed, the fracture strength is high, and there is no unnecessary increase in plate thickness at the end of the spacer. This is shown in Figure 2a,
It is clear from the stress distribution diagram shown in b, and a is the fourth
This is an example of the conventional technology shown in the figure, and b is the case of the present invention. In the figure, 26 and 27 are vectors, 28 and 29 are compressive forces, and 30 and 31 are tensile forces. As can be seen from this figure, compared to the prior art, the present invention eliminates stress concentration at the center of the substrate portion B, and allows stress to be dispersed over the entire substrate portion B, thereby improving fracture strength.
以上述べた本発明によれば、絶縁性ガスが充填
された管路内部に三相導体を配置し、上記管路相
互間を互いに連結区分し、上記管路内に配置され
た三相相導体を支持する三相絶縁スペーサにおい
て、冠状の基板部と、この基板部の周縁に配置さ
れ上記管路に連結するためのフランジ部とが一体
に形成されるとともに、上記基板部の底面中央に
断面が凸状隆起した隆起部を有し、この隆起部を
のぞく基板部の底面に上記三相導体が貫通固定さ
れ、かつ上記隆起部の中央の板厚が、上記フラン
ジ部と基板部との連結部近傍の板厚より厚くした
ので、板厚を厚くすることなく、強度の高い三相
絶縁スペーサを提供できる。
According to the present invention described above, a three-phase conductor is disposed inside a conduit filled with insulating gas, the conduits are interconnected and sectioned, and the three-phase conductor disposed within the conduit is In the three-phase insulating spacer that supports the substrate, a crown-shaped substrate portion and a flange portion disposed around the periphery of the substrate portion for connecting to the conduit are integrally formed, and a cross section is formed at the center of the bottom surface of the substrate portion. has a convex raised part, the three-phase conductor is fixed through the bottom of the board part except for this raised part, and the plate thickness at the center of the raised part is the connection between the flange part and the board part. Since the plate thickness is made thicker than the plate thickness near the part, a high-strength three-phase insulating spacer can be provided without increasing the plate thickness.
第１図は本発明による三相絶縁スペーサの一実
施例を示す横断面図、第２図は同実施例の作用を
説明するための応力分布図、第３図ａ，ｂは従来
の三相絶縁スペーサの一例を示す縦断面および横
断面図、第４図は従来技術の三相絶縁スペーサの
一例を示す縦断面図および横断面図である。
Ｂ……基板部、Ｆ………フランジ部、２０……
タンク、２１……隆起部、２２……埋込金具、２
３……三相導体、２４……フランジ、２５……コ
ーン部。
Fig. 1 is a cross-sectional view showing one embodiment of the three-phase insulating spacer according to the present invention, Fig. 2 is a stress distribution diagram for explaining the action of the same embodiment, and Fig. 3 a and b are the conventional three-phase insulating spacer. FIG. 4 is a vertical cross-sectional view and a cross-sectional view showing an example of an insulating spacer. FIG. 4 is a vertical cross-sectional view and a cross-sectional view showing an example of a conventional three-phase insulating spacer. B... Board part, F... Flange part, 20...
Tank, 21... Raised portion, 22... Embedded metal fitting, 2
3...three-phase conductor, 24...flange, 25...cone part.
Claims (1)
を配置し、上記管路相互間を互いに連結区分し、
上記管路内に配置された三相導体を支持する三相
絶縁スペーサにおいて、 冠状の基板部と、この基板部の周縁に配置さ
れ、上記管路に連結するためのフランジ部とが一
体に形成されるとともに、上記基板部の底面中央
に断面が凸状に隆起した隆起部を有し、この隆起
部を除く基板部の底面に上記三相導体が貫通固定
され、かつ上記隆起部の中央の板厚が、上記フラ
ンジ部と基板部との連結部近傍の板厚より厚くし
たことを特徴とする三相絶縁スペーサ。 ２ 基板部の底面において、上記隆起部を除く部
分に４個のコーン部を等間隔に形成し、このコー
ン部のうちの１個を除く３個に上記三相導体を貫
通固定し、上記各コーン部の剛性が同等となるよ
うにコーン部の板厚を変えたことを特徴とする特
許請求の範囲第１項記載の三相絶縁スペーサ。[Claims] 1. A three-phase conductor is arranged inside a conduit filled with an insulating gas, and the conduits are interconnected and sectioned,
In a three-phase insulating spacer that supports a three-phase conductor placed in the conduit, a crown-shaped substrate portion and a flange portion disposed around the periphery of the substrate portion and connected to the conduit are integrally formed. At the same time, the substrate part has a raised part with a convex cross section in the center of the bottom surface, and the three-phase conductor is fixed through the bottom surface of the board part excluding this raised part, and A three-phase insulating spacer, characterized in that the plate thickness is greater than the plate thickness near the connecting portion between the flange portion and the substrate portion. 2. On the bottom surface of the substrate part, four cone parts are formed at equal intervals in a part other than the raised part, and the three-phase conductor is penetrated and fixed through three of the cone parts except for one, and each of the above The three-phase insulating spacer according to claim 1, wherein the thickness of the cone portion is changed so that the rigidity of the cone portion is the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20071986A JPS6359712A (en) | 1986-08-27 | 1986-08-27 | Three-phase insulating spacer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20071986A JPS6359712A (en) | 1986-08-27 | 1986-08-27 | Three-phase insulating spacer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6359712A JPS6359712A (en) | 1988-03-15 |
| JPH0480611B2 true JPH0480611B2 (en) | 1992-12-21 |
Family
ID=16429064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20071986A Granted JPS6359712A (en) | 1986-08-27 | 1986-08-27 | Three-phase insulating spacer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6359712A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5271344A (en) * | 1989-09-18 | 1993-12-21 | Mitsubishi Denki K.K. | Method and apparatus for controlling an automatic sewing machine |
| DE102006040038A1 (en) * | 2006-08-23 | 2008-03-20 | Siemens Ag | Arrangement with a disc insulator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5260948A (en) * | 1975-11-14 | 1977-05-19 | Fuji Electric Co Ltd | Spacer for/3-phase package sealed type make and break equipment |
| JPS6016818B2 (en) * | 1978-07-27 | 1985-04-27 | 株式会社東芝 | Three phase insulation spacer |
-
1986
- 1986-08-27 JP JP20071986A patent/JPS6359712A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6359712A (en) | 1988-03-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| EXPY | Cancellation because of completion of term |