JP2003189457A - Of cable line and method of diagnosing cable line - Google Patents
Of cable line and method of diagnosing cable lineInfo
- Publication number
- JP2003189457A JP2003189457A JP2001379712A JP2001379712A JP2003189457A JP 2003189457 A JP2003189457 A JP 2003189457A JP 2001379712 A JP2001379712 A JP 2001379712A JP 2001379712 A JP2001379712 A JP 2001379712A JP 2003189457 A JP2003189457 A JP 2003189457A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- cable line
- cable
- supply pipe
- protective case
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 4
- 230000001681 protective effect Effects 0.000 claims abstract description 29
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 102100033029 Carbonic anhydrase-related protein 11 Human genes 0.000 description 1
- 101000867841 Homo sapiens Carbonic anhydrase-related protein 11 Proteins 0.000 description 1
- 101001075218 Homo sapiens Gastrokine-1 Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000538 analytical sample Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ＯＦケーブルから
絶縁油を採取するのに用いるＯＦケーブル線路とケーブ
ル線路の診断方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an OF cable line used for collecting insulating oil from an OF cable and a method for diagnosing the cable line.
【０００２】[0002]
【従来の技術】ＯＦケーブル線路では、線路の絶縁破壊
事故を未然に防止するために、線路内の絶縁油が定期的
あるいは必要時に採油される。採油された絶縁油は、含
有水分量や含有ガス量の分析がされる。この含有水分量
や含有ガス量に基づいて絶縁油の劣化等が発見される。
従って、線路内の適切な場所から適切な分析サンプルを
採油することが、線路事故の未然防止や早期発見に繋が
る。2. Description of the Related Art In an OF cable line, insulating oil in the line is collected periodically or when necessary in order to prevent accidental breakdown of the line. The collected insulating oil is analyzed for water content and gas content. Deterioration of the insulating oil or the like is found based on the amount of contained water and the amount of contained gas.
Therefore, collecting an appropriate analytical sample from an appropriate place in the track will lead to the prevention of track accidents and early detection.
【０００３】図６は、従来の採油箇所説明図である。図
より、ＯＦケーブル線路は、ＯＦケーブル線路終端部１
０１と、ＯＦケーブル１０２と、ケーブル接続部１０３
とを備える。ケーブル線路終端部１０１は、ＯＦケーブ
ル線路の終端立ち上げ部分に配置され、図示しない碍管
等に収容される。ケーブル接続部１０３は、隣り合うＯ
Ｆケーブル１０２を直線接続する部分である。このよう
なＯＦケーブル線路では、ケーブル線路終端部１０１に
油槽１０５が接続されている。従来、このＯＦケーブル
線路内部の絶縁油を分析するための採油箇所は、各ケー
ブル接続部１０３に配置されている。即ち、分析サンプ
ルは、各ケーブル接続部１０３に設けられた採油コネク
タ１０４から採油されていた。FIG. 6 is an explanatory view of a conventional oil collecting portion. From the figure, the OF cable line is the OF cable line termination 1
01, OF cable 102, and cable connecting portion 103
With. The cable line terminating portion 101 is arranged at the terminal rising portion of the OF cable line and is accommodated in a porcelain tube or the like (not shown). The cable connecting portions 103 are adjacent to each other.
This is a portion for connecting the F cable 102 in a straight line. In such an OF cable line, the oil tank 105 is connected to the cable line terminal portion 101. Conventionally, oil collecting points for analyzing insulating oil inside the OF cable line are arranged in each cable connecting portion 103. That is, the analysis sample was collected from the oil collection connector 104 provided in each cable connection portion 103.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上記のよう
な従来の技術には、次のような解決すべき課題があっ
た。このようなＯＦケーブル線路で、特にケーブル線路
終端部１０１から採油することが出来ないために、ケー
ブル線路終端部１０１で異常事態が発生している場合に
は、発見が遅れる場合があった。この弊害は、直線接続
部と同様に、採油コネクタを設けたケーブル線路終端部
をＯＦケーブル線路に採用すれば容易に解決される。し
かし、近年ＣＶケーブルの高圧化が進みＯＦケーブル線
路の新設は激減している。むしろ、現在敷設済みのＯＦ
ケーブル線路に対する対策が、当面の課題となってい
る。By the way, the above conventional techniques have the following problems to be solved. In such an OF cable line, in particular, oil cannot be collected from the cable line terminal portion 101, so that when an abnormal situation occurs in the cable line terminal portion 101, discovery may be delayed. This adverse effect can be easily solved by adopting the cable line terminal portion provided with the oil collecting connector in the OF cable line, as in the case of the straight line connecting portion. However, with the recent increase in the voltage of CV cables, the number of new OF cable lines has been dramatically reduced. Rather, OF that has already been laid
Countermeasures for cable lines have become an immediate issue.
【０００５】[0005]
【課題を解決するための手段】本発明は以上の点を解決
するため次の構成を採用する。〈構成１〉ケーブル線路
終端部の保護ケースを貫通してＯＦケーブル内部の油通
路に接続されて絶縁油を収納した油槽に至る給油管と、
上記給油管を分岐する分岐器と、この分岐器に接続され
て絶縁油を採油するための採油バルブとを備えることを
特徴とするＯＦケーブル線路。The present invention adopts the following constitution in order to solve the above points. <Structure 1> An oil supply pipe penetrating a protective case at the end of the cable line and connected to an oil passage inside the OF cable to reach an oil tank containing insulating oil,
An OF cable line comprising: a branching device that branches the oil supply pipe, and an oil collecting valve that is connected to the branching device to collect insulating oil.
【０００６】〈構成２〉構成１に記載のＯＦケーブル線
路において、上記給油管には、上記油槽から複数のＯＦ
ケーブル線路終端部に絶縁油を供給するバルブパネルが
挿入されており、上記分岐器は、上記バルブパネルと上
記ＯＦケーブル線路終端部との間に配置されていること
を特徴とするＯＦケーブル線路。<Structure 2> In the OF cable line according to Structure 1, the oil supply pipe includes a plurality of OFs from the oil tank.
An OF cable line, wherein a valve panel for supplying insulating oil is inserted into a cable line terminal portion, and the branching device is arranged between the valve panel and the OF cable line terminal portion.
【０００７】〈構成３〉構成２に記載のＯＦケーブル線
路において、上記ＯＦケーブル線路の呼吸作用により、
上記保護ケースから上記給油管側に逆流する絶縁油の最
大油量をＶ立法メートルとし、上記給油管の実効断面積
をＳ平方メートルとしたとき、上記給油管に沿って上記
保護ケースからＶ／Ｓメートル以内の位置に上記分岐器
が配置されることを特徴とするＯＦケーブル線路。<Structure 3> In the OF cable line according to the structure 2, due to the breathing action of the OF cable line,
When the maximum amount of insulating oil that flows back from the protective case to the oil supply pipe side is V cubic meter, and the effective cross-sectional area of the oil supply pipe is S square meters, V / S from the protective case along the oil supply pipe An OF cable line in which the above branching device is arranged at a position within a meter.
【０００８】〈構成４〉ケーブル線路終端部の保護ケー
スを貫通してＯＦケーブル内部の油通路に接続されて絶
縁油を収納した油槽に至る給油管に対して、当該給油管
を分岐して絶縁油を採油する分岐器を接続し、上記ＯＦ
ケーブル線路の呼吸作用により、上記保護ケースから上
記給油管側に絶縁油が逆流するタイミングで上記分岐器
を通じて絶縁油を採油して、上記ＯＦケーブル線路中の
絶縁油を分析することを特徴とするケーブル線路の診断
方法。<Structure 4> The oil supply pipe is branched and insulated from the oil supply pipe which penetrates the protective case at the end of the cable line and is connected to the oil passage inside the OF cable to reach the oil tank containing the insulating oil. Connect a branching device that collects oil to the above OF
The insulating oil in the OF cable line is analyzed by collecting the insulating oil through the branching device at the timing when the insulating oil flows back from the protective case to the oil supply pipe side due to the breathing action of the cable line. How to diagnose cable tracks.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態を具体
例を用いて説明する。図１は、本発明のケーブル終端部
を採用したＯＦケーブル線路概略構成図である。図のＯ
Ｆケーブル線路は、所定の区間ごとにケーブル接続部５
を介して接続されたＯＦケーブル６から成る。その終端
には、ケーブル線路終端部３が設けられている。ケーブ
ル線路終端部３には、給油管９を介して油槽１が接続さ
れている。油槽１には、セル１０と加圧油１１とが収容
されている。油槽１とケーブル線路終端部３とを繋ぐ給
油管９には、バルブパネル２が挿入されている。このバ
ルブパネル２は、１本の給油管９を３方向に分岐するた
めに、主バルブ２−０と副バルブ２−１、２−２、２−
３が設けたものである。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to specific examples. FIG. 1 is a schematic configuration diagram of an OF cable line adopting the cable terminating portion of the present invention. O in the figure
The F cable line has a cable connecting portion 5 for each predetermined section.
Of the OF cable 6 connected via the. A cable line terminating portion 3 is provided at the end thereof. The oil tank 1 is connected to the cable line terminal portion 3 via an oil supply pipe 9. The oil tank 1 contains cells 10 and pressurized oil 11. A valve panel 2 is inserted in an oil supply pipe 9 that connects the oil tank 1 and the cable line terminal portion 3. The valve panel 2 has a main valve 2-0 and sub-valves 2-1, 2-2, 2-for branching one refueling pipe 9 in three directions.
3 is provided.
【００１０】例えば、３相１回線のＯＦケーブル線路の
場合、各相に対し１つの油槽１から絶縁油が供給され
る。バルブ２−１、２−２、２−３はこれらの各相に絶
縁油を供給するための給油管に接続される。この図で
は、その内の１相分のみを図示した。このバルブパネル
２とケーブル線路終端部３の間を結ぶ給油管９には、分
岐器２０が接続され、ここに採油バルブ２１が取り付け
られている。給油管９は所定の管径の金属管からなる。
分岐器２０も同様の金属管からなる。給油管９と分岐器
２０とは溶接接続されており、給油管９の内部を通る絶
縁油が採油バルブ２１の方向に取り出せるように構成さ
れている。For example, in the case of a three-phase one-line OF cable line, insulating oil is supplied from one oil tank 1 for each phase. The valves 2-1, 2-2, 2-3 are connected to an oil supply pipe for supplying insulating oil to each of these phases. In this figure, only one of them is shown. A branching device 20 is connected to an oil supply pipe 9 that connects the valve panel 2 and the cable line terminating portion 3, and an oil collection valve 21 is attached thereto. The oil supply pipe 9 is made of a metal pipe having a predetermined pipe diameter.
The branching device 20 is also made of a similar metal tube. The oil supply pipe 9 and the branching device 20 are connected by welding, and the insulating oil passing through the inside of the oil supply pipe 9 can be taken out toward the oil collection valve 21.
【００１１】本発明では、既存の給油管９に対し、分岐
器２０を取り付ける事によって、ケーブル線路終端部３
から新たに絶縁油を採取できるようにした。例えば、給
油管９に分岐器２０と採油バルブ２１を取り付けた構造
のものを別に用意し、既存の給油管９と置き換える事に
より、改造工事が完了する。ケーブル線路終端部３自体
の改造は不要である。以下図１に示した分岐器２０と採
油バルブ２１の部分の具体的な構成を説明する。According to the present invention, by attaching the branching device 20 to the existing oil supply pipe 9, the cable line terminating portion 3 is provided.
It is now possible to collect new insulating oil from. For example, the remodeling work is completed by separately preparing a structure in which the branching device 20 and the oil collecting valve 21 are attached to the oil supply pipe 9 and replacing the existing oil supply pipe 9. It is not necessary to modify the cable line terminal portion 3 itself. Hereinafter, a specific configuration of the branching device 20 and the oil collecting valve 21 shown in FIG. 1 will be described.
【００１２】図２は、本発明によるケーブル線路終端部
３の側面図である。図に示すように、ＯＦケーブル４の
立ち上げ終端は、碍管１２と上部覆１３によって絶縁保
護されている。ＯＦケーブル４の図示しない油通路は保
護ケース１５の内部で終端している。これらの構成は既
存のものと変わりない。給油管９は保護ケース１５を貫
通して、保護ケース１５の内部の油通路に接続される。
この給油管９に分岐器２０と採油バルブ２１を取り付け
る。FIG. 2 is a side view of the cable line termination 3 according to the present invention. As shown in the drawing, the rising end of the OF cable 4 is insulated and protected by the insulator 12 and the upper cover 13. An oil passage (not shown) of the OF cable 4 terminates inside the protective case 15. These configurations are the same as existing ones. The oil supply pipe 9 penetrates the protective case 15 and is connected to an oil passage inside the protective case 15.
A branching device 20 and an oil collecting valve 21 are attached to the oil supply pipe 9.
【００１３】図３は、上記保護ケースの分岐器２０を取
り付けた部分の拡大側面図である。図３（ａ）は、図２
に示した保護ケース１５の主要部をそのまま拡大した側
面図で、（ｂ）は、（ａ）の部分を左側から見た側面図
である。FIG. 3 is an enlarged side view of the portion of the protective case to which the branching device 20 is attached. FIG. 3 (a) is shown in FIG.
2B is a side view in which the main part of the protective case 15 shown in FIG. 2 is enlarged as it is, and FIG. 3B is a side view of the portion of FIG.
【００１４】図に示すように、ＯＦケーブルの終端の保
護ケース１５に、ステンレスバンド２２とバルブ取付座
２３を取り付ける事によって、採油バルブ２１を固定す
る。そして、給油管９に接続した分岐器２０と採油バル
ブ２１を通じて絶縁油を採油するように構成している。
採油バルブ２１を開放すると、採油口２５から絶縁油を
採取できる。給油管９はエルボーパイプ２６を通じて保
護ケース１５の内部のＯＦケーブルの図示しない油通路
に接続される。その接続方法は任意であり、従来どおり
でよい。給油管９は、ナット２７を回転させる事によっ
てエルボーパイプ２６に着脱できる。従って、この部分
で従来取り付けられていた給油管９を外し、新たに分岐
器２０を取り付けた給油管９を接続する事によって、既
存のＯＦケーブル線路終端部に採油機能を付与する事が
できる。As shown in the drawing, the oil collecting valve 21 is fixed by attaching the stainless band 22 and the valve mounting seat 23 to the protective case 15 at the end of the OF cable. Then, the insulating oil is collected through the branching device 20 connected to the oil supply pipe 9 and the oil collecting valve 21.
When the oil collection valve 21 is opened, insulating oil can be collected from the oil collection port 25. The oil supply pipe 9 is connected to an oil passage (not shown) of the OF cable inside the protective case 15 through the elbow pipe 26. The connection method is arbitrary and may be the same as the conventional one. The oil supply pipe 9 can be attached to and detached from the elbow pipe 26 by rotating the nut 27. Therefore, by removing the oil supply pipe 9 conventionally attached at this portion and connecting the oil supply pipe 9 to which the branching device 20 is newly attached, it is possible to impart an oil collecting function to the end portion of the existing OF cable line.
【００１５】なお、このように給油管９の途中に分岐器
２０を接続して採油を行う場合、分岐器２０を取り付け
る位置が問題になる。図３に示した例では、保護ケース
１５を利用して分岐器２０の先に設けられた採油バルブ
２１を固定支持した。しかしながら、別の任意の場所に
採油バルブを取り付ける事ができれば、それでもよい。When the branching device 20 is connected in the middle of the oil supply pipe 9 to collect oil, the position where the branching device 20 is attached becomes a problem. In the example shown in FIG. 3, the protective case 15 is used to fix and support the oil collection valve 21 provided at the tip of the branching device 20. However, if the oil collection valve can be attached to another arbitrary place, that may be sufficient.
【００１６】図４は、ＯＦケーブル線路への分岐器２０
の取付位置を説明する説明図である。ＯＦケーブル線路
では、外気温の変化や線路電流の増減により、内部に満
たされた絶縁油の熱伸縮が生じる。内部に出された絶縁
油が熱膨張すると、図４に示したように保護ケース１５
から油槽１の方向に、矢印Ｘのように給油管９を通って
絶縁油が逆流する。一方、環境温度が低下して絶縁油が
熱収縮すると、内部の油圧が下がった分だけ油槽１から
矢印Ｙ方向に絶縁油が供給される。これがＯＦケーブル
線路の呼吸作用である。FIG. 4 shows a branching device 20 to an OF cable line.
It is explanatory drawing explaining the attachment position of. In the OF cable line, thermal expansion and contraction of the insulating oil filled inside occurs due to changes in the outside temperature and changes in the line current. When the insulating oil discharged inside thermally expands, as shown in FIG.
The insulating oil flows backward from the oil tank 1 through the oil supply pipe 9 in the direction of the arrow X. On the other hand, when the environmental temperature decreases and the insulating oil thermally contracts, the insulating oil is supplied from the oil tank 1 in the direction of the arrow Y by the amount of decrease in the internal hydraulic pressure. This is the breathing action of the OF cable line.
【００１７】油槽１の内部の絶縁油の成分とＯＦケーブ
ル６の終端に近い部分の絶縁油の成分とを実際に採取し
て比較すると、ＯＦケーブル線路の呼吸作用によっても
絶縁油の混ざり合いがほとんどないことがわかる。すな
わち、油槽１に近い部分で絶縁油を採取しても、ＯＦケ
ーブル６の終端部近傍の絶縁油の成分を知る事は難し
い。しかし、ＯＦケーブル６の終端に近い部分や、保護
ケース１５の内部から直接絶縁油を採取使用とすると、
これらの改造が必要になる。それは、送電を停止して行
わなければならない工事になる。When the composition of the insulating oil inside the oil tank 1 and the composition of the insulating oil in the portion near the end of the OF cable 6 are actually sampled and compared, the mixing of the insulating oil is also caused by the breathing action of the OF cable line. You can see that there is almost no. That is, even if the insulating oil is collected in the portion close to the oil tank 1, it is difficult to know the component of the insulating oil near the end portion of the OF cable 6. However, if the insulating oil is directly collected and used from the portion near the end of the OF cable 6 or the inside of the protective case 15,
These modifications are needed. That is the work that must be done with the power transmission stopped.
【００１８】一方、本発明では、給油管９に分岐器を取
り付けるだけなので、送電を継続したまま簡単な工事で
採油機能が付与できる。分岐器２０からＯＦケーブル６
の終端に近い部分の絶縁油を採油するには、ＯＦケーブ
ル線路の呼吸作用により給油管９側に保護ケース１５か
ら絶縁油が逆流するタイミングで絶縁油を採油する。す
なわち、環境温度が比較的高く、ＯＦケーブル６から保
護ケース１５を通じて矢印Ｘ方向に絶縁油が流れ出して
いる時に、採油バルブ２１を開いて絶縁油を採取する。On the other hand, in the present invention, since only the branching device is attached to the oil supply pipe 9, the oil collecting function can be provided by a simple construction while continuing the power transmission. From branch switch 20 to OF cable 6
In order to collect the insulating oil in the portion close to the terminal end, the insulating oil is collected at the timing when the insulating oil flows backward from the protective case 15 to the oil supply pipe 9 side by the breathing action of the OF cable line. That is, when the environmental temperature is relatively high and the insulating oil flows from the OF cable 6 through the protective case 15 in the direction of the arrow X, the oil collecting valve 21 is opened to collect the insulating oil.
【００１９】また、こうした採油を可能にするために
は、保護ケース１５からあまり遠い位置に分岐器２０を
取り付ける事は好ましくない。例えば、図４に示したＣ
の位置では、バルブパネル２を通じて他相のＯＦケーブ
ル線路の絶縁油が流れ込むため、採油位置として適さな
い。さらに、Ａの位置とＢの位置とを比較した場合に
は、Ａの位置の方がより採油に適する。例えば、全長が
数キロメートルのＯＦケーブル線路では、絶縁油は保護
ケース１５から数リットル程度熱膨張によって給油管９
方向に逆流する。このため、給油管９に逆流する絶縁油
の最大油量をＶ立方メートルとし、給油管の実効断面積
をＳ平方メートルとした時、給油管に沿って保護ケース
からＶ／Ｓメートル以内の位置に上記分岐器２０を設け
るとよい。Further, in order to enable such oil collection, it is not preferable to attach the branching device 20 at a position far from the protective case 15. For example, C shown in FIG.
At the position, the insulating oil of the OF cable line of the other phase flows in through the valve panel 2 and is not suitable as the oil collecting position. Furthermore, when the position A and the position B are compared, the position A is more suitable for oil collection. For example, in an OF cable line having a total length of several kilometers, the insulating oil is thermally expanded from the protective case 15 by several liters to the oil supply pipe 9.
Flow back in the direction. Therefore, when the maximum amount of insulating oil that flows back into the oil supply pipe 9 is V cubic meters and the effective cross-sectional area of the oil supply pipe is S square meters, the above-mentioned position is within V / S meters from the protective case along the oil supply pipe. A branching device 20 may be provided.
【００２０】図５は、本発明の変形例を示すＯＦケーブ
ル線路終端部の主要部側面図である。図に示すように、
保護ケース１５を貫通するように設けられたエルボーパ
イプ２６には、ナット３１と銅管付きユニオン３２とナ
ット３３と絶縁継ぎ手３４とナット３５が順に取り付け
られ、ここに給油管９が接続されている。従来のＯＦケ
ーブル線路においては、給油管９と保護ケース１５との
間を電気的に切り離すために、絶縁継ぎ手３４を設けた
ものが多い。このような構造のＯＦケーブル線路終端部
では、ナット３１とナット３３をゆるめて、既設の図示
しないユニオンを取り外し、図に示すように、新たに分
岐器２０と採油バルブ２１を取り付けた銅管付きユニオ
ン３２を取付ければ、既存のＯＦケーブル線路に本発明
を採用する事ができる。しかも給油管９全体を交換する
必要がないため、交換作業も容易であり、交換のための
コストも充分に安くなる。FIG. 5 is a side view of a main portion of an OF cable line terminal portion showing a modification of the present invention. As shown in the figure,
A nut 31, a copper pipe union 32, a nut 33, an insulating joint 34 and a nut 35 are sequentially attached to an elbow pipe 26 provided so as to pass through the protective case 15, and the oil supply pipe 9 is connected thereto. . In many of the conventional OF cable lines, an insulating joint 34 is provided to electrically disconnect the oil supply pipe 9 and the protective case 15. At the end of the OF cable line having such a structure, the nut 31 and the nut 33 are loosened, the existing unillustrated union is removed, and as shown in the figure, the branch pipe 20 and the oil collecting valve 21 are newly attached to the copper pipe. If the union 32 is attached, the present invention can be applied to an existing OF cable line. Moreover, since it is not necessary to replace the entire oil supply pipe 9, the replacement work is easy and the replacement cost is sufficiently low.
【発明の効果】以上説明した本発明のＯＦケーブル終端
部は、ケーブル線路終端部に設けられた既存の給油管に
分岐器２０と採油バルブ２１とを取り付ける事によって
線路終端部付近の絶縁油を採油する事が可能になる。こ
れにより、既存のＯＦケーブル線路についてもケーブル
線路終端部の大幅な改造をする事なく、容易に採油が可
能になり、線路の信頼性を高める事ができる。The OF cable end portion of the present invention described above removes insulating oil near the line end portion by attaching the branching device 20 and the oil collection valve 21 to the existing oil supply pipe provided at the cable line end portion. It is possible to collect oil. As a result, it is possible to easily oil the existing OF cable line without significantly modifying the end of the cable line, thereby improving the reliability of the line.
【図１】本発明のケーブル終端部を採用したＯＦケーブ
ル線路概略構成図である。FIG. 1 is a schematic configuration diagram of an OF cable line that employs a cable terminal portion of the present invention.
【図２】本発明によるケーブル線路終端部３の側面図で
ある。FIG. 2 is a side view of the cable line terminating portion 3 according to the present invention.
【図３】（ａ）は、図２に示した保護ケース１５の主要
部をそのまま拡大した側面図で、（ｂ）は、（ａ）の部
分を左側から見た側面図である。3A is a side view in which a main part of the protective case 15 shown in FIG. 2 is enlarged as it is, and FIG. 3B is a side view of the part of FIG.
【図４】ＯＦケーブル線路への分岐器２０の取付位置を
説明する説明図である。FIG. 4 is an explanatory diagram illustrating a mounting position of a branching device 20 on an OF cable line.
【図５】本発明の変形例を示すＯＦケーブル線路終端部
の主要部側面図である。FIG. 5 is a side view of a main portion of an OF cable line terminal portion showing a modified example of the present invention.
【図６】従来の採油箇所説明図である。FIG. 6 is an explanatory view of a conventional oil collecting portion.
１ 油槽 ２ バルブパネル ３ ケーブル線路終端部 ５ ケーブル接続部 ６ ＯＦケーブル ８ 分岐器 ９ 給油管 1 oil tank 2 valve panel 3 Cable line termination 5 Cable connection 6 OF cable 8 switch 9 Refueling pipe
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2G052 AA08 AB00 AC21 AD07 AD27 BA02 BA28 CA02 CA11 DA13 HA01 HA15 HC02 HC10 HC28 HC39 HC42 JA04 JA22 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 2G052 AA08 AB00 AC21 AD07 AD27 BA02 BA28 CA02 CA11 DA13 HA01 HA15 HC02 HC10 HC28 HC39 HC42 JA04 JA22
Claims (4)
してＯＦケーブル内部の油通路に接続されて絶縁油を収
納した油槽に至る給油管と、前記給油管を分岐する分岐
器と、この分岐器に接続されて絶縁油を採油するための
採油バルブとを備えることを特徴とするＯＦケーブル線
路。1. A fuel supply pipe which penetrates a protective case at the end of the cable line and is connected to an oil passage inside the OF cable to reach an oil tank containing insulating oil, a branching device for branching the oil supply pipe, and a branching device. And an oil collection valve connected to the container for collecting insulating oil.
いて、 前記給油管には、前記油槽から複数のＯＦケーブル線路
終端部に絶縁油を供給するバルブパネルが挿入されてお
り、前記分岐器は、前記バルブパネルと前記ＯＦケーブ
ル線路終端部との間に配置されていることを特徴とする
ＯＦケーブル線路。2. The OF cable line according to claim 1, wherein a valve panel for supplying insulating oil from the oil tank to a plurality of terminal ends of the OF cable line is inserted into the oil supply pipe, and the branching device comprises: An OF cable line is provided between the valve panel and the terminal end of the OF cable line.
いて、 前記ＯＦケーブル線路の呼吸作用により、前記保護ケー
スから前記給油管側に逆流する絶縁油の最大油量をＶ立
法メートルとし、前記給油管の実効断面積をＳ平方メー
トルとしたとき、前記給油管に沿って前記保護ケースか
らＶ／Ｓメートル以内の位置に前記分岐器が配置される
ことを特徴とするＯＦケーブル線路。3. The OF cable line according to claim 2, wherein the maximum amount of insulating oil that flows back from the protective case to the oil supply pipe side by the breathing action of the OF cable line is V cubic meter, An OF cable line, wherein the branching device is arranged at a position within V / S meters from the protective case along the oil supply pipe when the effective cross-sectional area of the pipe is S square meters.
してＯＦケーブル内部の油通路に接続されて絶縁油を収
納した油槽に至る給油管に対して、当該給油管を分岐し
て絶縁油を採油する分岐器を接続し、前記ＯＦケーブル
線路の呼吸作用により、前記保護ケースから前記給油管
側に絶縁油が逆流するタイミングで前記分岐器を通じて
絶縁油を採油して、前記ＯＦケーブル線路中の絶縁油を
分析することを特徴とするケーブル線路の診断方法。4. An oil supply pipe is connected to an oil passage inside the OF cable through a protective case at the end of the cable line to reach an oil tank containing insulating oil, and the oil supply pipe is branched to supply insulating oil. By connecting a branching device for collecting oil, the insulating oil is collected through the branching device at a timing at which the insulating oil flows back from the protective case to the oil supply pipe due to the breathing action of the OF cable line. A method of diagnosing a cable line, characterized by analyzing insulating oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001379712A JP3708045B2 (en) | 2001-12-13 | 2001-12-13 | OF cable line and cable line diagnostic method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001379712A JP3708045B2 (en) | 2001-12-13 | 2001-12-13 | OF cable line and cable line diagnostic method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003189457A true JP2003189457A (en) | 2003-07-04 |
| JP3708045B2 JP3708045B2 (en) | 2005-10-19 |
Family
ID=27591126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001379712A Expired - Fee Related JP3708045B2 (en) | 2001-12-13 | 2001-12-13 | OF cable line and cable line diagnostic method |
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| Country | Link |
|---|---|
| JP (1) | JP3708045B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8673748B2 (en) | 2009-03-05 | 2014-03-18 | Osaka University | Method for fabricating semiconductor thin film using substrate irradiated with focused light, apparatus for fabricating semiconductor thin film using substrate irradiated with focused light, method for selectively growing semiconductor thin film using substrate irradiated with focused light, and semiconductor element using substrate irradiated with focused light |
-
2001
- 2001-12-13 JP JP2001379712A patent/JP3708045B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8673748B2 (en) | 2009-03-05 | 2014-03-18 | Osaka University | Method for fabricating semiconductor thin film using substrate irradiated with focused light, apparatus for fabricating semiconductor thin film using substrate irradiated with focused light, method for selectively growing semiconductor thin film using substrate irradiated with focused light, and semiconductor element using substrate irradiated with focused light |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3708045B2 (en) | 2005-10-19 |
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