JP3443904B2 - Three-phase bus - Google Patents

Three-phase bus

Info

Publication number
JP3443904B2
JP3443904B2 JP31460793A JP31460793A JP3443904B2 JP 3443904 B2 JP3443904 B2 JP 3443904B2 JP 31460793 A JP31460793 A JP 31460793A JP 31460793 A JP31460793 A JP 31460793A JP 3443904 B2 JP3443904 B2 JP 3443904B2
Authority
JP
Japan
Prior art keywords
conductor
insulating
pipe
spacer
insulating spacer
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 - Fee Related
Application number
JP31460793A
Other languages
Japanese (ja)
Other versions
JPH07170634A (en
Inventor
高司 宮崎
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.)
Meidensha Corp
Original Assignee
Meidensha Corp
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 Meidensha Corp filed Critical Meidensha Corp
Priority to JP31460793A priority Critical patent/JP3443904B2/en
Publication of JPH07170634A publication Critical patent/JPH07170634A/en
Application granted granted Critical
Publication of JP3443904B2 publication Critical patent/JP3443904B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00Installations of bus-bars
    • H02G5/06Totally-enclosed installations, e.g. in metal casings
    • H02G5/066Devices for maintaining distance between conductor and enclosure
    • H02G5/068Devices for maintaining distance between conductor and enclosure being part of the junction between two enclosures

Description

【発明の詳細な説明】 【0001】 【産業上の利用分野】本発明は三相母線に関し、導体の
中間部を支持するようにしたものである。 【0002】 【従来の技術】発電所や変電所にはガス絶縁開閉装置が
設置される。図5(a)はガス絶縁開閉装置の回路図を
単線で示すものであり、図5(b)はその構成機器の構
成図である。図中、DSは断路器、ESは接地装置、C
Bは遮断器、CHはケーブルヘッド、Trは変圧器、P
CTは計器用変成器を示す。 【0003】図5(b)に示すように各機器が収容され
たタンク1〜6が三相母線7,8により接続されてい
る。この三相母線は略円筒形の管路の中に三相分の導体
を収容したものであり、タンクのレイアウトによってそ
の長さが異なる。三相母線7のA−A断面を図6に示す
ように、長い三相母線7の中間位置には導体を支持する
部分が設けられる。 【0004】即ち、以下のように構成されている。管路
10の長さ方向での同一の位置であって相互に90°を
なす位置にフランジ部11,12,13が形成され、フ
ランジ部11,12,13に夫々盲板14が図示しない
ボルトを介して気密に取り付けられる。そして、盲板1
4の内面に絶縁材料からなる支持部材15の一端が夫々
結合され、三相分の各導体16が支持部材15の他端に
夫々結合されている。 【0005】 【発明が解決しようとする課題】ところが、支持部材を
取り付けるためのフランジ部を導体の数だけ管路のまわ
りに形成しなければならないため、管路の構造が複雑に
なりコスト高となる。 【0006】そこで本発明は、斯る課題を解決した三相
母線を提供することを目的とする。 【0007】 【課題を解決するための手段】斯る目的を達成するため
の本発明の構成は、略筒形状の管路の両端に絶縁スペー
サを結合し、管路の内部に収容した三相分の導体を気密
に絶縁スペーサに貫通させて管路内に絶縁ガスを充填し
た三相母線において、前記管路を2以上の分割管路で構
成するとともに、隣り合う分割管路どうしを第二の絶縁
スペーサを介して連結することで前記管路とし、前記第
二の絶縁スペーサに前記導体を貫通させることにより前
記第二の絶縁スペーサで前記三相分の導体の中間部を支
持し、前記第二の絶縁スペーサへの前記導体の貫通部
は、前記第二の絶縁スペーサに金属製のパイプを嵌合
し、前記導体のうちの前記金属製のパイプに挿通されて
いる部分の外周面に平面部を形成することにより前記金
属製のパイプと前記導体との間に連通孔を形成し、前記
平面部に穴を形成すると共に当該穴にバネを介して金属
製のピンを収容したことを特徴とする。 【0008】 【作用】隣り合う分割管路どうしが第二の絶縁スペーサ
を介して連結され、三相分の導体の両端以外の中間部が
第二の絶縁スペーサによって支持される。第二の絶縁ス
ペーサの取り付けは、連結した分割管路の両端に設ける
ものと構造が略同じであるため簡単である。分割管路の
内部どうしは第二の絶縁スペーサに形成した連通孔を介
して連通するので、いずれかの分割管路の内部の絶縁ガ
スを管理すれば足りる。また、金属製のパイプと前記導
体との間に連通孔を形成し、導体の平面部に形成された
穴にバネを介して金属製のピンを収容したので、金属製
のパイプと導体とが同電位に保持される。 【0009】 【実施例】以下、本発明を図面に示す実施例に基づいて
詳細に説明する。 【0010】本発明による三相母線の構成を図1〜図4
に示す。図1のようにひとつの管路を分割した一対の分
割管路20,20が第二の絶縁スペーサ21を介して連
結されている。そして、分割管路20の端部が夫々絶縁
スペーサ22を介して他の管路23,23に連結されて
いる。絶縁スペーサ21,22には図2に示すように三
相分の導体24が貫通して支持されている。 【0011】分割管路20,20の連結部の拡大図を図
3に示す。リング状の金属スペーサ25及び分割管路2
0のフランジ部20aどうしをボルト26で結合するこ
とによりフランジ部20aどうしの間に第二の絶縁スペ
ーサ21が挾持され、第二の絶縁スペーサ21とフラン
ジ部20aとの間には夫々Oリング27が設けられる。
第二の絶縁スペーサ21の3ケ所には筒部21aが形成
されており、筒部21aの中には金属製のパイプ28が
嵌合されている。第二の絶縁スペーサ21はモールド注
型品であるため、三相分のパイプ28の位置はモールド
型の精度で正確に設定されている。パイプ28には夫々
導体24が挿通されており、導体24のうちのパイプ2
8に挿通された部分の外周面には平面部29が形成され
て導体24とパイプ28との間に連通孔33が形成され
ている。これは、分割管路20の内部の絶縁ガスが充填
されたガス室どうしをつなぐためである。そして、平面
部29には導体24の軸心へ向かって穴30が形成され
るとともに穴30内にバネ31を介して金属製のピン3
2が収容され、ピン32が常時パイプ28へ向かって押
圧されている。これは、パイプ28を導体24と同電位
に保持するためである。 【0012】次に、導体24が絶縁スペーサ22を貫通
する部分の構造を図4に示す。絶縁スペーサ22は絶縁
ガスを区分するとともに導体24を支持するものであ
る。前記と同様にして絶縁スペーサ22が分割管路20
と管路23との間に気密に取り付けられており、絶縁ス
ペーサ22に三相分の埋込導体34が埋め込まれて両者
間がシールされている。そして、各導体24の端部に形
成されたフランジ部24aの取付孔24bに六角穴付ボ
ルト35を挿通し、この六角穴付ボルト35を埋込導体
34のタップ孔34aへ螺合することにより、各導体2
4と埋込導体34とが一体的に結合されている。なお、
図4は図1の右端の構造を示すものであるが、左端の構
造も図4と同様である。 【0013】このほか、図1に示すように導体24どう
しを連結するためにコンタクトを用いた連結部36が設
けられている。 【0014】次に、斯かる三相母線の作用を説明する。 【0015】一対の分割管路20にわたって配設された
長い導体24は、その中間部が第二の絶縁スペーサ21
によって支持される。一対の分割管路20を連結した部
分の両端に気密に絶縁スペーサ22が取り付けられて夫
々の分割管路20の中には絶縁ガスが充填されている。
この双方の分割管路20内の絶縁ガスは図3に示す連通
孔33を介して連通している。従って、いずれか一方の
分割管路20内の絶縁ガスの圧力等を管理すればよいこ
とになる。 【0016】なお、本実施例はひとつの管路を2つの分
割管路に分割して第二の絶縁スペーサをひとつだけ介在
させたものであるが、3つ以上の分割管路に分割するこ
ともできる。 【0017】 【発明の効果】以上の説明からわかるように、請求項1
に係る発明によれば、管路を2以上の分割管路で構成す
るとともに、隣り合う分割管路どうしを第二の絶縁スペ
ーサを介して連結することで管路とし、前記第二の絶縁
スペーサに導体を貫通させることにより第二の絶縁スペ
ーサで三相分の導体の中間部を支持したので、簡単な構
造で長い導体の中間部を支持することができる。また、
第二の絶縁スペーサには連通孔が形成されているので、
複数の分割管路の内部どうしが連通し、ガス区分が細分
化されない。従って、絶縁ガスの管理が煩雑になること
もない。更に、第二の絶縁スペーサに金属製のパイプを
嵌合し、導体のうちの金属製のパイプに挿通されている
部分の外周面に平面部を形成し、平面部に穴を形成する
と共に穴にバネを介して金属製のピンを収容したので、
パイプと導体とが同電位に保持される。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-phase bus which supports an intermediate portion of a conductor. 2. Description of the Related Art Gas-insulated switchgears are installed in power plants and substations. FIG. 5 (a) shows a circuit diagram of the gas insulated switchgear by a single line, and FIG. 5 (b) is a configuration diagram of components thereof. In the figure, DS is a disconnector, ES is a grounding device, C
B is a circuit breaker, CH is a cable head, Tr is a transformer, P
CT indicates an instrument transformer. [0005] As shown in FIG. 5 (b), tanks 1 to 6 in which respective devices are accommodated are connected by three-phase buses 7 and 8. The three-phase bus accommodates three-phase conductors in a substantially cylindrical conduit, and its length varies depending on the layout of the tank. As shown in FIG. 6 showing the A-A cross section of the three-phase bus 7, a portion for supporting the conductor is provided at an intermediate position of the long three-phase bus 7. That is, it is configured as follows. Flanges 11, 12, and 13 are formed at the same position in the longitudinal direction of the conduit 10 and at 90 ° to each other, and a blind plate 14 is provided on each of the flanges 11, 12, and 13 with a bolt (not shown). Can be mounted airtight. And blind plate 1
One end of a supporting member 15 made of an insulating material is respectively connected to the inner surface of 4, and each conductor 16 for three phases is connected to the other end of the supporting member 15, respectively. [0005] However, since the number of flanges for mounting the support member must be formed around the pipes by the number of conductors, the structure of the pipes becomes complicated and cost increases. Become. Therefore, an object of the present invention is to provide a three-phase bus which solves the above problem. [0007] In order to achieve the above object, a configuration of the present invention is a three-phase structure in which insulating spacers are connected to both ends of a substantially cylindrical pipe and accommodated inside the pipe. In a three-phase bus in which the conductor is airtightly penetrated through an insulating spacer and the pipe is filled with an insulating gas, the pipe is formed of two or more divided pipes, and the adjacent divided pipes are connected to each other by a second pipe. insulation through the spacer and the conduit by connecting, to support the intermediate portion of the second insulating spacer in the three phases of the conductor by penetrating the conductor to the second insulating spacer, the Penetration of the conductor to a second insulating spacer
Fits a metal pipe to the second insulating spacer
And is inserted through the metal pipe of the conductor
By forming a flat portion on the outer peripheral surface of the
Forming a communication hole between the metal pipe and the conductor,
A hole is formed in the flat part and metal is inserted into the hole via a spring.
It is characterized by containing a pin made of . The divided pipes adjacent to each other are connected to each other via the second insulating spacer, and intermediate portions other than both ends of the three-phase conductor are supported by the second insulating spacer. The attachment of the second insulating spacer is simple because the structure is substantially the same as that provided at both ends of the connected divided pipeline. Since the insides of the divided pipes communicate with each other through communication holes formed in the second insulating spacer, it is sufficient to manage the insulating gas inside one of the divided pipes. In addition, the metal pipe and the conductor
Formed a communication hole between the body and the conductor
Since a metal pin was housed in the hole via a spring,
And the conductor are kept at the same potential. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments shown in the drawings. FIGS. 1 to 4 show the configuration of a three-phase bus according to the present invention.
Shown in As shown in FIG. 1, a pair of divided conduits 20, 20 obtained by dividing one conduit are connected via a second insulating spacer 21. The ends of the divided pipes 20 are connected to other pipes 23 via insulating spacers 22, respectively. As shown in FIG. 2, three-phase conductors 24 penetrate and are supported by the insulating spacers 21 and 22. FIG. 3 is an enlarged view of a connecting portion of the divided pipes 20, 20. Ring-shaped metal spacer 25 and split conduit 2
The second insulating spacers 21 are sandwiched between the flange portions 20a by connecting the two flange portions 20a with bolts 26, and an O-ring 27 is provided between the second insulating spacer 21 and the flange portion 20a. Is provided.
A cylindrical portion 21a is formed at three places of the second insulating spacer 21, and a metal pipe 28 is fitted in the cylindrical portion 21a. Since the second insulating spacer 21 is a cast product, the position of the three-phase pipe 28 is set accurately with the accuracy of the mold. The conductors 24 are inserted through the pipes 28, respectively.
A flat portion 29 is formed on the outer peripheral surface of the portion inserted through 8, and a communication hole 33 is formed between the conductor 24 and the pipe 28. This is for connecting the gas chambers filled with the insulating gas inside the divided pipeline 20. A hole 30 is formed in the plane portion 29 toward the axis of the conductor 24, and the metal pin 3 is inserted into the hole 30 via a spring 31.
2 are accommodated, and the pin 32 is constantly pressed toward the pipe 28. This is to keep the pipe 28 at the same potential as the conductor 24. Next, FIG. 4 shows a structure of a portion where the conductor 24 penetrates the insulating spacer 22. The insulating spacer 22 separates the insulating gas and supports the conductor 24. In the same manner as described above, the insulating spacer 22 is
And a conduit 23 are hermetically mounted. A three-phase buried conductor 34 is buried in the insulating spacer 22 to seal between them. Then, a hexagonal socket is attached to the mounting hole 24b of the flange portion 24a formed at the end of each conductor 24.
By the belt 35 is inserted, it is screwed the hexagon socket head cap screw 35 into the tapped hole 34a of the buried conductors 34, each conductor 2
4 and the embedded conductor 34 are integrally connected. In addition,
FIG. 4 shows the structure at the right end of FIG. 1, but the structure at the left end is also the same as FIG. In addition, as shown in FIG. 1, a connecting portion 36 using a contact for connecting the conductors 24 is provided. Next, the operation of the three-phase bus will be described. The intermediate portion of the long conductor 24 disposed over the pair of divided conduits 20 has a second insulating spacer 21.
Supported by Insulating spacers 22 are hermetically attached to both ends of a portion where the pair of divided conduits 20 are connected, and each divided conduit 20 is filled with an insulating gas.
The insulating gas in the two divided pipes 20 communicates via the communication holes 33 shown in FIG. Therefore, the pressure and the like of the insulating gas in one of the divided pipes 20 may be managed. In the present embodiment, one conduit is divided into two divided conduits and only one second insulating spacer is interposed. However, the conduit is divided into three or more divided conduits. Can also. As can be seen from the above description, claim 1
According to the invention according to the above, the pipeline is constituted by two or more divided pipelines, and the adjacent divided pipelines are connected to each other via the second insulating spacer to form a pipeline, and the second insulating spacer Since the middle portion of the three-phase conductor is supported by the second insulating spacer by penetrating the conductor into the middle portion, the middle portion of the long conductor can be supported with a simple structure. Also,
Since the communication hole is formed in the second insulating spacer,
The insides of the plurality of divided pipes communicate with each other, and the gas division is not divided. Therefore, the management of the insulating gas does not become complicated. In addition, a metal pipe is used for the second insulating spacer.
Mates and is inserted through metal pipe out of conductor
Form a flat part on the outer peripheral surface of the part and form a hole in the flat part
With a metal pin housed in the hole via a spring,
The pipe and the conductor are kept at the same potential.

【図面の簡単な説明】 【図1】本発明による三相母線の実施例を示す断面図。 【図2】図1のB−B矢視図。 【図3】(a)は図1のC部の拡大図、(b)は(a)
のD−D矢視図。 【図4】(a)は図1のE部の拡大図、(b)は(a)
のF−F矢視図。 【図5】ガス絶縁開閉装置に係り、(a)は回路図、
(b)は構成図。 【図6】従来の三相母線の要部を示すもので、図5
(b)のA−A矢視図。 【符号の説明】 20…分割管路 21…第二の絶縁スペーサ 22…絶縁スペーサ 23…管路 24…導体28…パイプ 29…平面部 30…穴 31…バネ 32…ピン 33…連通孔
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing an embodiment of a three-phase bus according to the present invention. FIG. 2 is a view taken in the direction of arrows BB in FIG. 1; 3A is an enlarged view of a portion C in FIG. 1, and FIG.
FIG. 4A is an enlarged view of a portion E in FIG. 1, and FIG.
FIG. FIG. 5 relates to a gas insulated switchgear, (a) is a circuit diagram,
(B) is a block diagram. 6 shows a main part of a conventional three-phase bus, and FIG.
FIG. [Description of Signs] 20 ... Divided conduit 21 ... Second insulating spacer 22 ... Insulating spacer 23 ... Pipe 24 ... Conductor 28 ... Pipe 29 ... Planar part 30 ... Hole 31 ... Spring 32 ... Pin 33 ... Communication hole

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭56−136109(JP,A) 特開 昭57−65214(JP,A) 特開 平2−79710(JP,A) 実開 昭59−145223(JP,U) 特公 昭44−7895(JP,B1) 実公 昭41−2940(JP,Y1) 実公 昭41−2941(JP,Y1) (58)調査した分野(Int.Cl.7,DB名) H02G 5/06 351 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-56-136109 (JP, A) JP-A-57-65214 (JP, A) JP-A-2-79710 (JP, A) 145223 (JP, U) JP-B-44-7895 (JP, B1) JP-B-41-2940 (JP, Y1) JP-B-41-2941 (JP, Y1) (58) Fields investigated (Int. Cl. 7 , DB name) H02G 5/06 351

Claims (1)

(57)【特許請求の範囲】 【請求項1】 略筒形状の管路の両端に絶縁スペーサを
結合し、管路の内部に収容した三相分の導体を気密に絶
縁スペーサに貫通させて管路内に絶縁ガスを充填した三
相母線において、 前記管路を2以上の分割管路で構成するとともに、隣り
合う分割管路どうしを第二の絶縁スペーサを介して連結
することで前記管路とし、前記第二の絶縁スペーサに前
記導体を貫通させることにより前記第二の絶縁スペーサ
で前記三相分の導体の中間部を支持し、前記第二の絶縁
スペーサへの前記導体の貫通部は、前記第二の絶縁スペ
ーサに金属製のパイプを嵌合し、前記導体のうちの前記
金属製のパイプに挿通されている部分の外周面に平面部
を形成することにより前記金属製のパイプと前記導体と
の間に連通孔を形成し、前記平面部に穴を形成すると共
に当該穴にバネを介して金属製のピンを収容したことを
特徴とする三相母線。
(57) [Claims 1] Insulating spacers are connected to both ends of a substantially cylindrical pipe, and three-phase conductors housed inside the pipe are passed through the insulating spacer in an airtight manner. In a three-phase bus filled with an insulating gas in a pipe, the pipe is constituted by two or more divided pipes, and adjacent divided pipes are connected to each other via a second insulating spacer. and road, the middle portion of the second insulating spacer by a conductor of the three phases is supported by a second possible to penetrate the conductor insulation spacer, the second insulating
The penetrating portion of the conductor to the spacer is provided in the second insulating space.
Fitting a metal pipe to the
A flat part on the outer peripheral surface of the part inserted through the metal pipe
By forming the metal pipe and the conductor
A communication hole is formed between the
Characterized in that a metal pin is accommodated in the hole via a spring .
JP31460793A 1993-12-15 1993-12-15 Three-phase bus Expired - Fee Related JP3443904B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31460793A JP3443904B2 (en) 1993-12-15 1993-12-15 Three-phase bus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31460793A JP3443904B2 (en) 1993-12-15 1993-12-15 Three-phase bus

Publications (2)

Publication Number Publication Date
JPH07170634A JPH07170634A (en) 1995-07-04
JP3443904B2 true JP3443904B2 (en) 2003-09-08

Family

ID=18055338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31460793A Expired - Fee Related JP3443904B2 (en) 1993-12-15 1993-12-15 Three-phase bus

Country Status (1)

Country Link
JP (1) JP3443904B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007004656A1 (en) * 2007-01-25 2008-07-31 Abb Technology Ag insulator

Also Published As

Publication number Publication date
JPH07170634A (en) 1995-07-04

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