JPH027304A - Snow hard-to-deposit electric wire - Google Patents
Snow hard-to-deposit electric wireInfo
- Publication number
- JPH027304A JPH027304A JP63157645A JP15764588A JPH027304A JP H027304 A JPH027304 A JP H027304A JP 63157645 A JP63157645 A JP 63157645A JP 15764588 A JP15764588 A JP 15764588A JP H027304 A JPH027304 A JP H027304A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- snow
- heat
- electric wire
- core
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000000696 magnetic material Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000004907 flux Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 4
- 238000010276 construction Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000020169 heat generation Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Non-Insulated Conductors (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、たとえば架空送電線等に用いることのでき
る、着氷雪が防止された難着雪電線に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a snow-resistant electric wire that can be used, for example, as an overhead power transmission line, and can prevent ice and snow from accumulating.
［従来の技術］
従来の難着雪電線としては、電線に一定間隔でプラスチ
ック製リングを設け、電線に着雪した雪が電線の素線に
沿って０重により回転し成長するのを防止する方式のも
のや、電線の外周部に磁性体をスパイラル状に巻付けて
、この磁性体がらの発熱で着雪を防止する方式のもの等
がある。[Prior art] Conventional snow-resistant electric wires include a method in which plastic rings are provided at regular intervals on the electric wire to prevent snow that has settled on the electric wire from rotating and growing along the strands of the electric wire. There is also a method in which a magnetic material is wound spirally around the outer periphery of the electric wire, and the heat generated by the magnetic material prevents snow from accumulating.
［発明が解決しようとする課題］
しかしながら、このような従来の難着雪電線には以下の
ような問題があった。すなわち、プラスチックリングを
取付ける方式のものは、素線に沿って雲が回転するのを
防止して着雪が成長するのを抑制するものであるため、
着雪に対しては有効であるが、着氷に対しては効果がな
いという欠点があった。また、磁性体をスパイラル状に
巻付ける方式のものは、磁性体自身が閉回路を形成して
いないため、発熱量が小さく着雪防止効果が不十分であ
るという問題があった。さらに、’Ｑｄｊｌに大きな電
流が流れると、発熱量が増加し、不必要に内側の電線の
温度を上昇させてしまうという問題もあった。[Problems to be Solved by the Invention] However, such conventional snow-resistant electric wires have the following problems. In other words, the type that attaches a plastic ring prevents the cloud from rotating along the wire and suppresses the growth of snow.
Although it is effective against snow accretion, it has the disadvantage that it is not effective against icing. Further, in the case of a method in which a magnetic material is spirally wound, since the magnetic material itself does not form a closed circuit, there is a problem in that the amount of heat generated is small and the snow accretion prevention effect is insufficient. Furthermore, when a large current flows through 'Qdjl, the amount of heat generated increases, which causes the temperature of the inner wire to rise unnecessarily.
この発明の目的は、かかる従来の問題を解消し、着氷に
対しても効果を有し、しかも不必要に電線を温度上昇さ
せることのない難着雪電線を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve these conventional problems and provide a snow-resistant electric wire that is effective against icing and does not unnecessarily increase the temperature of the electric wire.
［課題を解決するための手段］
請求項１の発明では、外周部に位置する線材のうち少な
くとも１本以上が、導電体からなる芯線部のまわりに磁
性体層を設けた発熱用線材であることを特徴としている
。[Means for Solving the Problems] In the invention of claim 1, at least one of the wires located on the outer periphery is a heating wire in which a magnetic layer is provided around a core wire made of a conductor. It is characterized by
請求項２の発明では、さらに、発熱用線材の芯線部の導
電体が超電導材料であることを特徴としている。The invention according to claim 2 is further characterized in that the conductor of the core wire portion of the heating wire is a superconducting material.
請求項３の発明では、発熱用線材の磁性体層が低キュリ
ー磁性材料であることを特徴としている。The invention according to claim 3 is characterized in that the magnetic layer of the heating wire is made of a low Curie magnetic material.
［作用］
請求項１の発明では、導電体からなる芯線部のまわりに
磁性体層を設けた発熱用線材が外周部に少なくとも１本
以上設けられている。発熱用線材の芯線部には、全体を
流れる電流の一部が分流して流れる。発熱用線材の芯線
部に電流が流れると、まわりの磁性体層に電流に応じた
磁束が発生し、磁性体層のヒステリシス損および渦電流
損が生じ、発熱する。このようにして発熱する発熱用線
材は、電線の外周部に設けられているため、電線への着
氷雪が防止される。[Function] According to the first aspect of the invention, at least one heating wire having a magnetic layer provided around a core wire portion made of a conductor is provided on the outer peripheral portion. A part of the current flowing through the entire heat-generating wire flows in a branched manner through the core wire portion of the heat-generating wire. When a current flows through the core wire of the heating wire, magnetic flux corresponding to the current is generated in the surrounding magnetic layer, causing hysteresis loss and eddy current loss in the magnetic layer, which generates heat. Since the heat-generating wire that generates heat in this manner is provided on the outer periphery of the electric wire, icing and snow on the electric wire is prevented.
また、全体がこのような発熱によって温度上昇すると、
発熱用線材の芯線部の抵抗が徐々に大きくなる。このた
め、芯線部を流れる電流が小さくなり、発熱量が小さく
なって、電線全体が過度に温度上昇するのが防止される
。このように、この発明の難着雪電線は、温度に関する
自己制御機能を有している。Also, if the temperature of the entire body rises due to such heat generation,
The resistance of the core wire of the heating wire gradually increases. Therefore, the current flowing through the core wire portion is reduced, the amount of heat generated is reduced, and the temperature of the entire wire is prevented from rising excessively. As described above, the snow-resistant electric wire of the present invention has a self-control function regarding temperature.
請求項２の電線では、発熱用線材の芯線部の導体が超電
導材料から構成される。このため、芯線部に用いた超電
導材料の臨界温度以下のときには、芯線部が超電導性を
示し、電線全体を流れる電流の大部分がこの芯線部を流
れるため、極めて大きな発熱量を示し、顕著な着氷雪防
止効果を発揮することができる。In the electric wire according to the second aspect of the present invention, the conductor of the core wire portion of the heating wire is made of a superconducting material. Therefore, when the temperature is below the critical temperature of the superconducting material used for the core wire, the core wire exhibits superconductivity, and most of the current flowing through the entire wire flows through this core wire, resulting in an extremely large amount of heat generation, which is noticeable. It can exhibit the effect of preventing the accumulation of ice and snow.
請求項３の発明では、発熱用線材の磁性体層が低キュリ
ー磁性材料からなる。このため、キュリー温度より低い
温度のときには、発熱して着氷雪を防止し、キュリー温
度より高い温度のときには、非磁性体となり発熱効果が
なくなり、過度に電線が温度上昇するのを防止で、きる
。In the third aspect of the invention, the magnetic layer of the heating wire is made of a low Curie magnetic material. Therefore, when the temperature is lower than the Curie temperature, it generates heat and prevents the formation of ice and snow, and when the temperature is higher than the Curie temperature, it becomes a non-magnetic material and loses its heat generation effect, preventing the wire from rising in temperature excessively. .
［実施例］
第１図は、この発明の一実施例を示す断面図である。第
１図において、外周部に位置する線材のうちの１つが、
発熱用線材１であり、その他は金属素線４から構成され
ている。発熱用線材１は、導電体からなる芯線部２と、
そのまわりの磁性体層３から構成されている。芯線部２
の導電体としては、高い導電率を有する金属が適してお
り、具体的には、アルミニウム、銅および銀などの金属
が挙げられる。また、この導電体の抵抗温度係数はでき
るだけ大きいことが好ましい。抵抗温度係数が大きいと
、電線へのる氷雪のおそれがないような高い温度におい
て、電線が過度に温度上昇するのを有効に防止できる。[Embodiment] FIG. 1 is a sectional view showing an embodiment of the present invention. In FIG. 1, one of the wire rods located on the outer periphery is
This is a heat generating wire 1, and the rest is made up of a metal wire 4. The heating wire 1 includes a core wire portion 2 made of a conductor,
It is composed of a magnetic layer 3 surrounding it. Core wire part 2
As the conductor, a metal having high electrical conductivity is suitable, and specific examples thereof include metals such as aluminum, copper, and silver. Further, it is preferable that the temperature coefficient of resistance of this conductor is as large as possible. If the temperature coefficient of resistance is large, it is possible to effectively prevent the temperature of the wire from increasing excessively at a high temperature where there is no risk of ice or snow getting onto the wire.
第２図は、この発明の他の実施例を示す断面図である。FIG. 2 is a sectional view showing another embodiment of the invention.
第２図において、外周部には４つの発熱用線材１１が設
けられている。発熱用線材１１は、四方に分１′ｌｉ
Ｌ、て位置しており、それらの間の外周部には、金属素
線１４が位置している。発熱用線材１１は、導電体から
なる芯線部１２と、そのまわりに設けられる磁性体層１
３から構成されている。このように、外周部に設けられ
る発熱用線材は、複数設けることができ、電線が使用さ
れる場所や、Ｔｈ線の撚線数等に応じて適宜発熱用線材
の数を選択することができる。In FIG. 2, four heat generating wires 11 are provided on the outer periphery. The heating wire 11 is divided into 1′li on all sides.
L, and the metal wire 14 is located on the outer periphery between them. The heating wire 11 includes a core wire portion 12 made of a conductor and a magnetic layer 1 provided around the core wire portion 12.
It consists of 3. In this way, a plurality of heat-generating wires can be provided on the outer periphery, and the number of heat-generating wires can be selected as appropriate depending on the location where the electric wire is used, the number of strands of the Th wire, etc. .
［発明の効果］
以上説明したように、この発明では、導電体からなる芯
線部のまわりに磁性体層を設けた発熱用線材が、外周部
に少なくとも１本以上設けられており、この発熱用線材
は、温度上昇とともに発熱量が小さくなる自己制御機能
を有している。したがって、従来のように電線が過度に
温度上昇するおそれがなく、また発熱によるものである
ため、着雪のみならず着氷に対しても有効に防止効果を
発揮することができる。[Effects of the Invention] As explained above, in the present invention, at least one heat-generating wire in which a magnetic layer is provided around a core wire portion made of a conductor is provided on the outer peripheral portion, and this heat-generating wire The wire has a self-control function in which the amount of heat generated decreases as the temperature rises. Therefore, there is no fear that the temperature of the electric wire will rise excessively as in the conventional case, and since it is caused by heat generation, it is possible to effectively prevent not only snow accumulation but also icing accumulation.
この発明の難着雪電線は、このように着氷雪防止効果が
確実なものであるため、着氷雪が特に問題となる架空送
電線用の電線として特に有用である。Since the snow-resistant electric wire of the present invention has a reliable effect of preventing ice and snow build-up, it is particularly useful as an electric wire for overhead power transmission lines where ice and snow build-up is a particular problem.
第１図は、この発明の一実施例を示す断面図である。第
２図は、この発明の他の実施例を示す断面図である。
図において、１は発熱用線材、２は芯線部、３は磁性体
層、４は金属素線、１１は発熱用線材、１１は芯線部、
１３は磁性体層、１４は金属素線を示す。
第２図FIG. 1 is a sectional view showing an embodiment of the present invention. FIG. 2 is a sectional view showing another embodiment of the invention. In the figure, 1 is a heating wire, 2 is a core wire portion, 3 is a magnetic layer, 4 is a metal wire, 11 is a heating wire, 11 is a core wire portion,
13 is a magnetic layer, and 14 is a metal wire. Figure 2
Claims (3)
部に位置する線材のうち少なくとも１本以上が、導電体
からなる芯線部のまわりに磁性体層を設けた発熱用線材
である、難着雪電線。(1) A snow-resistant electric wire made of twisted wires, in which at least one of the wires located on the outer periphery is a heat-generating wire with a magnetic layer provided around a core wire made of a conductor. There is a power line that has difficulty accumulating snow.
ある、請求項１記載の難着雪電線。(2) The snow-resistant electric wire according to claim 1, wherein the conductor of the core wire portion of the heat generating wire is a superconducting material.
からなる、請求項１記載の難着雪電線。(3) The snow-resistant electric wire according to claim 1, wherein the magnetic layer of the heating wire is made of a low Curie magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63157645A JP2847710B2 (en) | 1988-06-25 | 1988-06-25 | Difficult-to-wear snow wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63157645A JP2847710B2 (en) | 1988-06-25 | 1988-06-25 | Difficult-to-wear snow wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH027304A true JPH027304A (en) | 1990-01-11 |
| JP2847710B2 JP2847710B2 (en) | 1999-01-20 |
Family
ID=15654254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63157645A Expired - Fee Related JP2847710B2 (en) | 1988-06-25 | 1988-06-25 | Difficult-to-wear snow wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2847710B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4884470B2 (en) * | 2005-07-29 | 2012-02-29 | フェデラル−モーグル コーポレイション | Manifold gasket with push rod guide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59125012U (en) * | 1983-02-10 | 1984-08-23 | 昭和電線電纜株式会社 | overhead power lines |
| JPS634024U (en) * | 1986-06-27 | 1988-01-12 |
-
1988
- 1988-06-25 JP JP63157645A patent/JP2847710B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59125012U (en) * | 1983-02-10 | 1984-08-23 | 昭和電線電纜株式会社 | overhead power lines |
| JPS634024U (en) * | 1986-06-27 | 1988-01-12 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4884470B2 (en) * | 2005-07-29 | 2012-02-29 | フェデラル−モーグル コーポレイション | Manifold gasket with push rod guide |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2847710B2 (en) | 1999-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |