JP2847710B2 - Difficult-to-wear snow wire - Google Patents
Difficult-to-wear snow wireInfo
- Publication number
- JP2847710B2 JP2847710B2 JP63157645A JP15764588A JP2847710B2 JP 2847710 B2 JP2847710 B2 JP 2847710B2 JP 63157645 A JP63157645 A JP 63157645A JP 15764588 A JP15764588 A JP 15764588A JP 2847710 B2 JP2847710 B2 JP 2847710B2
- Authority
- JP
- Japan
- Prior art keywords
- wire
- snow
- electric wire
- magnetic layer
- temperature
- 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
Links
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)
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 Application Field] The present invention relates to a hard-to-snow electric wire in which icing and snow are prevented, which can be used, for example, for overhead power transmission lines.
［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
に沿って自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、この磁性体からの発熱で着雪を防止する方式のもの
等がある。[Prior art] As a conventional snow-resistant electric wire, a plastic ring is provided on the electric wire at regular intervals to prevent the snow that has arrived on the electric wire from rotating and growing along its own wire by its own weight. And a method in which a magnetic material is spirally wound around the outer periphery of an electric wire to prevent snow from accumulating due to heat generated from the magnetic material.
［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、素線に沿って雪が回転するの
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、電線に大きな電流
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 a conventional snow-resistant electric wire has the following problems. In other words, the method of attaching a plastic ring is effective for snow accretion because it prevents snow from rotating along the strands and suppresses the growth of snow accretion, but is effective for snow accretion. Has no drawback. Further, in the case of a method in which the magnetic body is wound in a spiral shape, there is a problem that the heat generation amount is small and the effect of preventing snow accumulation is insufficient because the magnetic body itself does not form a closed circuit. Further, when a large current flows through the electric wires, the amount of heat generated increases, and there is a problem that the temperature of the inner electric wires is unnecessarily increased.
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 such a conventional problem and to provide a hard-to-snow electric wire which has an effect on icing and does not unnecessarily raise 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全周を取
囲む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 according to claim 1, at least one or more of the wires located at the outer peripheral portion are provided with a magnetic layer surrounding the entire circumference of a core portion made of a conductor. It is characterized by being a wire.
請求項２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 2 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 present invention, at least one heat-generating wire having a magnetic layer provided around a core portion made of a conductor is provided on the outer peripheral portion.
More than books are provided. A part of the current flowing through the entire core wire portion of the heating wire is divided and flows. When a current flows through the core portion of the heating wire, a magnetic flux corresponding to the current is generated in the surrounding magnetic layer, and a hysteresis loss and an eddy current loss of the magnetic layer are generated, thereby generating heat. Since the heating wire that generates heat in this manner is provided on the outer peripheral portion of the electric wire, icing and snow on the electric wire are 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。In addition, when the temperature rises as a whole due to such heat generation, the resistance of the core portion of the heating wire gradually increases. For this reason, the current flowing through the core portion is reduced, the amount of heat generation is reduced, and the temperature of the entire electric wire is prevented from being excessively increased. Thus, the hard-to-reach snow wire of the present invention has a self-control function relating to temperature.
請求項２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 invention according to claim 2, the magnetic layer of the heating wire is made of a low-Curie magnetic material. For this reason, when the temperature is lower than the Curie temperature, heat is generated to prevent icing and snow, and when the temperature is higher than the Curie temperature, a non-magnetic material is formed and the heat generation effect is lost.
［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一つ
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、電線への着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 wires located on the outer periphery is a heating wire 1, and the other is a metal wire 4. The heating wire 1 includes a core wire portion 2 made of a conductor.
And the magnetic layer 3 around it. As the conductor of the core wire portion 2, a metal having high conductivity is suitable, and specific examples thereof include metals such as aluminum, copper, and silver. Further, it is preferable that the resistance temperature coefficient 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 electric wire from excessively rising at a high temperature at which there is no risk of icing and snow on the electric wire.
第２図は、この発明の他の実施例を示す断面図であ
る。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、四方に分布して位置
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13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、電線
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。FIG. 2 is a sectional view showing another embodiment of the present invention. In FIG. 2, four heating wires 11 are provided on the outer peripheral portion. The heating wires 11 are distributed in four directions, and the metal wires 14 are located in the outer peripheral portion between them. The heating wire 11 is a core wire 12 made of a conductor.
And a magnetic layer 13 provided therearound. Thus, the heating wire provided on the outer peripheral portion is
A plurality can be provided, and the number of heating wires can be appropriately selected according to the place where the electric wire is used, the number of twisted wires, and the like.
［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 described above, in the present invention, at least one or more heating wires each having a magnetic layer provided around a core portion made of a conductor are provided on the outer peripheral portion. The wire has a self-control function in which the calorific value decreases as the temperature increases. Therefore, unlike the related art, there is no possibility that the temperature of the electric wire is excessively increased. Further, since the electric wire is generated by heat, the effect of effectively preventing not only snow but also icing can be exerted.
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 such a reliable effect of preventing icing and snow, it is particularly useful as an electric wire for an overhead transmission line in which icing and snow are particularly problematic.
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。FIG. 1 is a sectional view showing an embodiment of the present invention. FIG. 2 is a sectional view showing another embodiment of the present invention. In the figure, 1 is a heating wire, 2 is a core portion, 3 is a magnetic layer, 4 is a metal wire, 11 is a heating wire, 11 is a core portion, 13 is a magnetic layer, and 14 is a metal wire. .
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H01B 5/08 - 5/10 H01B 7/28 H02G 7/16──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) H01B 5/08-5/10 H01B 7/28 H02G 7/16
Claims (2)
て、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全周を取囲む磁性体層を設
けた発熱用線材である、難着雪電線。1. A hard-to-wear snow wire made by twisting wires, wherein at least one of wires located on the outer periphery is provided with a magnetic layer surrounding the entire circumference of a core portion made of a conductor. Difficult-to-attach snow wire, which is a heating wire.
性材料からなる、請求項１記載の難着雪電線。2. The hard-to-wear snow 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 JPH027304A (en) | 1990-01-11 |
| JP2847710B2 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7302925B2 (en) * | 2005-07-29 | 2007-12-04 | Federal-Mogul World Wide, Inc | Manifold gasket having pushrod guide |
Family Cites Families (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
Also Published As
| Publication number | Publication date |
|---|---|
| JPH027304A (en) | 1990-01-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |