JPS639064Y2

JPS639064Y2 -

Info

Publication number: JPS639064Y2
Application number: JP16874281U
Authority: JP
Priority date: 1981-11-12
Filing date: 1981-11-12
Publication date: 1988-03-17
Also published as: JPS5873516U

Description

【考案の詳細な説明】（考案の技述分野）本考案は、ケーブルの仕上り外径を小径となし
うる場合に有用な内冷OFケーブルの改良に係る。[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to an improvement of an internally cooled OF cable that is useful when the finished outer diameter of the cable can be made small.

（従来技術）従来、内冷OFケーブル用の導体としては、第
１図に示すように、導体１中心部に設けた油通路
２内にこれより小径の冷却パイプ３を配置し、こ
の冷却パイプに冷媒４を油通路２内に絶縁油５を
充填したものが知られている。(Prior art) Conventionally, as shown in Fig. 1, as a conductor for an internally cooled OF cable, a cooling pipe 3 with a smaller diameter is arranged in an oil passage 2 provided at the center of the conductor 1, and this cooling pipe It is known that a refrigerant 4 is filled in an oil passage 2 with insulating oil 5.

（従来技術の問題点）しかしながら、このような内冷OFケーブル用
の導体にあつては、冷却パイプを収納する分だけ
油通路径が大きくなりケーブルの仕上りが大径化
する不都合があつた。(Problems with the Prior Art) However, the conductor for such an internally cooled OF cable has the disadvantage that the diameter of the oil passage increases to accommodate the cooling pipe, resulting in a finished cable with a large diameter.

（他の従来技術とその問題点）一方、第２図に示すように絶縁体６外周にスキ
ツドワイヤー７をスパイラル巻きし、この上にア
ルミシース８を設けることによつて形成される外
部通路９に絶縁油１０を充填する方法も知られて
いるが、この方法においては、導体１１と外部通
路９間の油流抵抗が大きく給油上不利であつた。(Other conventional techniques and their problems) On the other hand, as shown in FIG. 2, an external passage is formed by spirally winding a skid wire 7 around the outer periphery of an insulator 6 and providing an aluminum sheath 8 thereon. A method of filling the insulating oil 10 into the conductor 9 is also known, but in this method, the oil flow resistance between the conductor 11 and the external passage 9 is large, which is disadvantageous in terms of oil supply.

（考案の目的）本考案はこのような点に着目してなされたもの
で、導体中心部に設けた内部通路に長さ方向に添
つて中心部に向かう凹みを形成し、この凹み部分
に絶縁油を、内部通路内に冷媒を充填することに
より、前述の欠点を解消せんとするものである。(Purpose of the invention) The present invention was made with attention to these points, and a recess is formed along the length direction toward the center in the internal passage provided at the center of the conductor, and an insulating layer is provided in this recessed part. The above-mentioned drawbacks are attempted to be overcome by filling the internal passages with oil and refrigerant.

（考案の実施例）以下、本考案を一実施例の図面に基づいて説明
する。第３図において、内冷OFケーブル１２は
導体１３と、この外周に順次設けられた絶縁体１
４金属シース１５および保護層１６とで構成され
ている。(Embodiment of the invention) Hereinafter, the invention will be explained based on the drawings of one embodiment. In FIG. 3, the internally cooled OF cable 12 includes a conductor 13 and an insulator 1 sequentially provided on the outer periphery of the conductor 13.
It is composed of a four-metal sheath 15 and a protective layer 16.

導体１３の中心部には長さ方向に添つて中心部
に向う凹み１７が形成された内部通路１８が配設
され、この内部通路には水等の冷媒１９が、導体
１３と凹み１７とによつて形成される外部通路２
０には、絶縁油２１が充填されている。 An internal passage 18 is provided in the center of the conductor 13 in which a recess 17 is formed extending toward the center in the length direction. External passage 2 thus formed
0 is filled with insulating oil 21.

凹み１７の大きさあるいはその形成個数は、そ
のケーブル線路に要求される条件により決定され
るもので第３図の実施例に限定されない。 The size of the recesses 17 or the number of recesses formed are determined by the conditions required for the cable line, and are not limited to the embodiment shown in FIG.

（考案の効果）以上述べたように本考案においては、内部通路
に凹みを形成しこの凹みに絶縁油を充填している
ので、ケーブルの仕上り外径を増大しない内冷
OFケーブルを提供でき、また、内部通路外周に
導体を形成する場合、何ら新技術を伴うことなく
容易に形成することができる。更に内部通路に凹
みが付与されているので内部通路の表面積が増大
し冷却効果が第１図に示す方式に比し大きくな
り、もつて送電容量を増大できる内冷OFケーブ
ルを提供できる。(Effects of the invention) As mentioned above, in this invention, a recess is formed in the internal passage and this recess is filled with insulating oil, so the internal cooling does not increase the finished outer diameter of the cable.
An OF cable can be provided, and when a conductor is formed on the outer periphery of the internal passage, it can be easily formed without any new technology. Furthermore, since the inner passage is provided with a recess, the surface area of the inner passage increases, and the cooling effect becomes greater than that of the system shown in FIG. 1, thereby providing an internally cooled OF cable that can increase the power transmission capacity.

[Brief explanation of drawings]

第１図および第２図は従来における内冷OFケ
ーブルの横断面図、第３図は本考案における内冷
OFケーブルの横断面図である。１３……導体、１４……絶縁体、１６……保護
層、１７……凹み、１８……内部通路、１９……
冷媒、２０……外部通路、２１……絶縁油。 Figures 1 and 2 are cross-sectional views of conventional internally cooled OF cables, and Figure 3 is the internally cooled OF cable of the present invention.
FIG. 3 is a cross-sectional view of an OF cable. 13... Conductor, 14... Insulator, 16... Protective layer, 17... Recess, 18... Internal passage, 19...
Refrigerant, 20...External passage, 21...Insulating oil.

Claims

[Scope of utility model registration request]

In an internally cooled OF cable in which a conductor, an insulating layer, and a protective layer are sequentially provided on an internal passage filled with a refrigerant, a recess is formed along the length of the internal passage toward the center, and the recess and the An internally cooled OF cable characterized by filling an external passage formed by a conductor with insulating oil.