JPH0819155A - Universal bending unit for pipeline air transmission line - Google Patents
Universal bending unit for pipeline air transmission lineInfo
- Publication number
- JPH0819155A JPH0819155A JP17326894A JP17326894A JPH0819155A JP H0819155 A JPH0819155 A JP H0819155A JP 17326894 A JP17326894 A JP 17326894A JP 17326894 A JP17326894 A JP 17326894A JP H0819155 A JPH0819155 A JP H0819155A
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- sheath
- pair
- bellows
- transmission line
- 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.)
- Pending
Links
- 238000005452 bending Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 title claims abstract description 11
- 239000004020 conductor Substances 0.000 claims abstract description 37
- 125000006850 spacer group Chemical group 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 description 6
- 241000722921 Tulipa gesneriana Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
(57)【要約】
【目的】 地震等によるシース〜導体間の絶縁距離が小
さくなることを防止するとともに、組立作業性を改善し
た管路気中送電線のユニバーサル変角ユニットを提供す
る。
【構成】 端部近くの導体とシース間に１対のコーン型
スペーサを設け、上記スペーサの長さ方向の内側のシー
スに左右１対のベローズを設けるとともに、その内部の
導体には１対のプラグインコンタクトを設け、さらに前
記ベローズの長さ方向の外側のシース間をタイロッドに
より連結した管路気中送電線のユニバーサル変角ユニッ
トにおいて、前記１対のベローズ間のほぼ中央の導体と
シース間にコーン型スペーサを設けた。
(57) [Summary] [Purpose] To provide a universal bending unit for a pipeline air transmission line that prevents the insulation distance between the sheath and the conductor from becoming small due to an earthquake or the like and improves the assembly workability. [Structure] A pair of cone-shaped spacers is provided between the conductor near the end and the sheath, a pair of left and right bellows is provided on the inner sheath of the spacer in the length direction, and a pair of left and right bellows is provided inside the conductor. In a universal bending unit of a pipeline air transmission line, in which a plug-in contact is provided and the outer sheaths in the lengthwise direction of the bellows are connected by tie rods, between the conductor and the sheath at approximately the center between the pair of bellows. A cone type spacer was provided on the.
Description
【０００１】[0001]
【産業上の利用分野】本発明は管路気中送電線のユニバ
ーサル変角ユニットの改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a universal bending unit of a pipeline air transmission line.
【０００２】[0002]
【従来の技術】最近、大容量送電線として管路気中送電
線（ＧＩＬ）が注目されている。管路気中送電線は円筒
形状のシースとその内部に配置された導体とを絶縁スペ
ーサで同心状に保持し、高電圧の導体とシース間を SF6
ガスで絶縁した構造である。このような管路気中送電線
は導体及びシースの輻射放熱やガスの対流効果により、
8,000A〜10,000A の大電流を流せるという特長がある。
一方、導体及びシースともにリジット構造であるため、
布設後、地震や地盤沈下のような線路に対して直角方向
の変形に対して追隨して変形できない。このため、従来
線路に対して直角方向（上下、左右、斜等のあらゆる方
向）の変位に対して追隨して変形できるように、ユニバ
ーサル変角ユニットがそのような変位が予想されるヶ所
に使用されている。2. Description of the Related Art Recently, a pipeline air transmission line (GIL) has attracted attention as a large capacity transmission line. In the pipeline air transmission line, the cylindrical sheath and the conductor arranged inside are held concentrically by an insulating spacer, and the SF 6 is placed between the high-voltage conductor and the sheath.
It is a gas insulated structure. Such a pipeline air transmission line, due to the radiation heat dissipation of the conductor and sheath and the convection effect of gas,
It has the feature that it can pass a large current of 8,000A to 10,000A.
On the other hand, since the conductor and sheath are rigid structures,
After laying, it cannot be deformed following the deformation in the direction perpendicular to the track, such as an earthquake or subsidence. For this reason, the universal bending unit is used at locations where such displacement is expected so that it can be deformed following changes in the direction perpendicular to the conventional line (all directions such as vertical, horizontal, and diagonal). Has been done.
【０００３】図２（イ）は従来のユニバーサル変角ユニ
ットの上半分縦断面をあらわした側面図であり、図２
（ロ）はその変位状況説明図である。図面に示すよう
に、端部近くの導体２とシース１間には左右１対のコー
ン型スペーサ４があって導体２をシース１に対して同心
状に保持している。上記コーン型スペーサ４の長さ方向
の内側のシース１には、直角方向変位に伴い発生するシ
ース１の曲がりを吸収する左右１対のベローズ５が設け
られており、その内部の導体２には１対のプラグインコ
ンタクト３が設けられており、直角方向変位に伴い発生
する導体の曲がりを吸収する。このプラグインコンタク
ト３はオス、メスのカップリングで構成し、大電流を流
しつつ導体の伸縮、曲げ変位を吸収できるチューリップ
コンタクトの一種である。そして、前記１対のベローズ
の長さ方向の外側のシース１上には固定フランジ７が一
体に設けられ、これらフランジ７間をタイロッド６で連
結しており、ベローズ５が内圧により伸び切らないよう
に、ガス圧力に耐える構造となっている。なお、図面に
おいて、８はシース１の拡管部で、隣接するシースと嵌
合した後溶接して接続するものであり、この内部の導体
はプラグインコンタクト３で隣接導体に接続する。FIG. 2A is a side view showing an upper half longitudinal section of a conventional universal angle changing unit.
(B) is an explanatory view of the displacement situation. As shown in the drawing, a pair of left and right cone-shaped spacers 4 are provided between the conductor 2 and the sheath 1 near the ends to hold the conductor 2 concentrically with respect to the sheath 1. A pair of left and right bellows 5 for absorbing the bending of the sheath 1 generated by the displacement in the right angle direction is provided on the sheath 1 on the inner side of the cone type spacer 4 in the length direction, and the conductor 2 inside the bellows 5 is provided on the conductor 2. A pair of plug-in contacts 3 are provided to absorb the bending of the conductor that occurs with the displacement in the right angle direction. This plug-in contact 3 is a kind of tulip contact that is composed of male and female couplings and can absorb the expansion and contraction and bending displacement of the conductor while allowing a large current to flow. A fixed flange 7 is integrally provided on the outer sheath 1 in the lengthwise direction of the pair of bellows, and the flanges 7 are connected by a tie rod 6 so that the bellows 5 may not be fully extended by internal pressure. In addition, it has a structure that can withstand gas pressure. In the drawings, reference numeral 8 denotes an expanded portion of the sheath 1, which is fitted to an adjacent sheath and then welded to be connected. The internal conductor is connected to an adjacent conductor by a plug-in contact 3.
【０００４】一般に、シース外径は 500mm、導体外径は
200mm程度であり、Ｌは８〜10ｍ、Ｓは３〜４ｍ程度で
ある。又線路直角方向変位（段差）（図２、ロ参照）は
100〜200mm 程度である。例えばＳ＝4000mm、段差＝20
0mm の場合、１ヶ所のベローズ及びプラグインコンタク
トの曲げ角＝tan-1 （ 200／4000）＝2.86°となる。Generally, the outer diameter of the sheath is 500 mm, and the outer diameter of the conductor is
It is about 200 mm, L is about 8 to 10 m, and S is about 3 to 4 m. Also, the displacement (step) in the direction perpendicular to the track (see Fig. 2, b)
It is about 100 to 200 mm. For example, S = 4000mm, step = 20
In the case of 0 mm, the bending angle of one bellows and plug-in contact = tan -1 (200/4000) = 2.86 °.
【０００５】[0005]
【発明が解決しようとする課題】上述した従来のユニバ
ーサル変角ユニットにおいては、次に列記するような問
題点がある。 （１）地震が発生すると中央部のプラグインコンタクト
３間の導体2aが撓み、シース１〜導体２間の絶縁距離が
小さくなる。 （２）組立作業性が悪い。いずれかのコーン型スペーサ
を組込んだ後、Ｓ部の導体を挿入しつつ、残りのコーン
型スペーサを組込む必要があり、導体の芯が出にくい。The above-mentioned conventional universal angle changing unit has the following problems. (1) When an earthquake occurs, the conductor 2a between the plug-in contacts 3 in the central portion bends, and the insulation distance between the sheath 1 and the conductor 2 decreases. (2) Assembly workability is poor. After incorporating any one of the cone-shaped spacers, it is necessary to incorporate the remaining cone-shaped spacers while inserting the conductor of the S portion, and the conductor core is hard to come out.
【０００６】[0006]
【課題を解決するための手段】本発明は上述の問題点を
解消し、地震等によるシース〜導体間の絶縁距離が小さ
くなることを防止するとともに、組立作業性を改善した
管路気中送電線のユニバーサル変角ユニットを提供する
もので、その特徴は、図２（イ）に示すユニバーサル変
角ユニットにおいて、１対のベローズ間のほぼ中央の導
体とシース間にコーン型スペーサを設けたことにある。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, prevents the insulation distance between the sheath and the conductor from becoming small due to an earthquake or the like, and improves the assembling workability in the pipeline. The present invention provides a universal bending unit for electric wires, which is characterized in that in the universal bending unit shown in Fig. 2 (a), a cone-shaped spacer is provided between a conductor and a sheath at a substantially center between a pair of bellows. It is in.
【０００７】[0007]
【作用】上述した本発明のユニバーサル変角ユニットに
おいては、次に列記するような作用を奏する。 （１）左右のプラグインコンタクト間にコーン型スペー
サがあるため、地震等による振動が加わっても導体の撓
みが小さくなり、シース〜導体間の絶縁距離が小さくな
ることを防止できる。 （２）組立作業性が改善される。まず中央のコーン型ス
ペーサと導体を組立てた後、左右のコーン型スペーサ及
び導体を挿入すればよいので、各導体、シースが短いた
め組立が容易である。The above universal diverting unit of the present invention has the following actions. (1) Since the cone-shaped spacers are provided between the left and right plug-in contacts, the bending of the conductor can be reduced even when vibration such as an earthquake is applied, and the insulation distance between the sheath and the conductor can be prevented from being reduced. (2) Assembly workability is improved. First, the central cone-shaped spacer and the conductor are assembled, and then the left and right cone-shaped spacers and the conductor are inserted, so that the conductors and the sheath are short, so that the assembly is easy.
【０００８】[0008]
【実施例】図１は本発明のユニバーサル変角ユニットの
具体例の上半分縦断面をあらわした斜視図である。図に
おいて、図２（イ）と同一符号は同一部位をあらわして
いる。本発明のユニバーサル変角ユニットにおいては、
図より明らかなように、図２（イ）において、１対のベ
ローズ５間のほぼ中央の導体２とシース１間にコーン型
スペーサ４が設けたものである。1 is a perspective view showing an upper half longitudinal section of a specific example of a universal angle changing unit of the present invention. In the figure, the same reference numerals as those in FIG. 2A represent the same parts. In the universal bending unit of the present invention,
As is clear from the figure, in FIG. 2A, a cone-type spacer 4 is provided between the sheath 1 and the conductor 2 in the center between the pair of bellows 5.
【０００９】[0009]
【発明の効果】以上説明したように、本発明の管路気中
送電線のユニバーサル変角ユニットによれば、１対のベ
ローズ間のほぼ中央の導体〜シース間にコーン型スペー
サを設けることにより、地震等の振動が加わっても導体
の撓みが小さくなり、導体〜シース間の絶縁距離が小さ
くなることを防止し、安定した電気絶縁性能を保持でき
る。又各導体、シースが短いため組立作業性が改善され
る等の利点を有する。As described above, according to the universal bending unit of the pipeline air transmission line of the present invention, the cone type spacer is provided between the conductor and the sheath at the substantially center between the pair of bellows. Even when vibration such as an earthquake is applied, the bending of the conductor is reduced, the insulation distance between the conductor and the sheath is prevented from being reduced, and stable electrical insulation performance can be maintained. Further, each conductor and sheath are short, so that there is an advantage that assembly workability is improved.
【図１】本発明のユニバーサル変角ユニットの具体的の
上半分縦断面をあらわした側面図である。FIG. 1 is a side view showing a specific vertical half section of a universal bending unit of the present invention.
【図２】図２（イ）は従来のユニバーサル変角ユニット
の上半分縦断面をあらわした側面図、図２（ロ）は図２
（イ）のユニバーサル変角ユニットの変形状況の説明図
である。FIG. 2 (a) is a side view showing an upper half longitudinal section of a conventional universal angle changing unit, and FIG. 2 (b) is FIG.
It is explanatory drawing of the deformation | transformation condition of the universal variable angle unit of (a).
１ シース ２ 導体 ３ プラグインコンタクト ４ コーン型スペーサ ５ ベローズ ６ タイロッド ７ 固定フランジ ８ シース拡管部 1 sheath 2 conductor 3 plug-in contact 4 cone type spacer 5 bellows 6 tie rod 7 fixed flange 8 sheath expansion part
Claims (1)
コーン型スペーサを設け、上記スペーサの長さ方向の内
側のシースに左右１対のベローズを設けるとともに、そ
の内部の導体には１対のプラグインコンタクトを設け、
さらに前記ベローズの長さ方向の外側のシース間をタイ
ロッドにより連結した管路気中送電線のユニバーサル変
角ユニットにおいて、前記１対のベローズ間のほぼ中央
の導体とシース間にコーン型スペーサを設けたことを特
徴とする管路気中送電線のユニバーサル変角ユニット。1. A pair of left and right cone-shaped spacers are provided between a conductor near an end and a sheath, a pair of left and right bellows are provided on a sheath inside the spacer in the length direction, and conductors inside the spacers are provided. Providing a pair of plug-in contacts,
Further, in the universal bending unit of the pipeline air transmission line in which the outer sheaths in the lengthwise direction of the bellows are connected by tie rods, a cone-type spacer is provided between the substantially central conductor between the pair of bellows and the sheath. A universal bending unit for pipeline air transmission lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17326894A JPH0819155A (en) | 1994-07-01 | 1994-07-01 | Universal bending unit for pipeline air transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17326894A JPH0819155A (en) | 1994-07-01 | 1994-07-01 | Universal bending unit for pipeline air transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0819155A true JPH0819155A (en) | 1996-01-19 |
Family
ID=15957307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17326894A Pending JPH0819155A (en) | 1994-07-01 | 1994-07-01 | Universal bending unit for pipeline air transmission line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0819155A (en) |
-
1994
- 1994-07-01 JP JP17326894A patent/JPH0819155A/en active Pending
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