JPS59171407A - Method of accelerating snowfall resistance of aerial ground wire - Google Patents
Method of accelerating snowfall resistance of aerial ground wireInfo
- Publication number
- JPS59171407A JPS59171407A JP58045687A JP4568783A JPS59171407A JP S59171407 A JPS59171407 A JP S59171407A JP 58045687 A JP58045687 A JP 58045687A JP 4568783 A JP4568783 A JP 4568783A JP S59171407 A JPS59171407 A JP S59171407A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- aluminum
- overhead ground
- ground wire
- wires
- 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
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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
- Non-Insulated Conductors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明はアルミ被鋼線を撚り合わせてなる架空地線の難
着雪効果を一層的確に増大せしめる方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for more accurately increasing the anti-snow accretion effect of an overhead ground wire made of twisted aluminum steel wires.
いわゆる架空地線は架空送電線路の鉄塔上部に架線され
送電線を雪害から防止するものであるが、長年月の使用
に耐える耐食性と長径間の架線張力下で強風圧に耐える
機械的強度と落雷や閃落時の大電流に対処できる導電性
能を有している必要があり、かつては主どして亜鉛メッ
キ鋼撚線が使用されて来た。その後、アルミ被鋼線の出
現に伴い、その機械的強度とすぐれた導電性、耐食性に
着目され、架空地線どして次第にこのアルミ被鋼線撚線
が代って使用されるようになった。So-called overhead ground wires are wires attached to the top of the towers of overhead power transmission lines to protect the power lines from snow damage, but they must have corrosion resistance that can withstand years of use, mechanical strength that can withstand strong wind pressure under long span tension, and lightning strikes. Galvanized steel stranded wires have traditionally been used because they must have conductive properties that can handle large currents during flashing and flashing. Later, with the appearance of aluminum-covered wires, attention was paid to their mechanical strength, excellent conductivity, and corrosion resistance, and these stranded aluminum-covered wires gradually came to be used instead for overhead ground wires. Ta.
一方、近年の光通信技術の進歩に伴ない、送電線路の各
施設相互間における情報制御連絡のための通信線として
、第1図に示したように内部に光ファイバ6を収容した
パイプ9の外周にアルミ被鋼線10.10−一−−−を
撚り合わせた光ファイバ複合架空地線の実用に供される
ようになった。On the other hand, with the recent progress in optical communication technology, as shown in FIG. Optical fiber composite overhead ground wires having aluminum coated wires 10.10-1 twisted around the outer periphery have come into practical use.
これは、架空地線に従来の雷害防止の役目をもたせつつ
内部の光ファイバをもって通信回線に使用しようとする
ものであり、電波障害や誘導障害のない光ファイバの特
質を生かした通信手段とじて注目されている。This is an attempt to use the internal optical fiber for communication lines while providing the overhead ground wire with the conventional role of lightning damage prevention. It is attracting attention.
この場合、光ファイバは当然のことながら機械的強度が
小さく、歪によって光伝送特性に悪影響があるため、苛
酷な条件下にも耐え得るにうその構成にはそれなりの配
慮がなされている。In this case, the optical fiber naturally has low mechanical strength and distortion has an adverse effect on optical transmission characteristics, so some consideration is given to the structure of the fiber so that it can withstand even severe conditions.
第1図はそのような光ファイバ複合架空地線の一例を示
す断面図であって、中心部に例えばピアノ線の如き高張
力心線4を配し、その周囲にスポンドの如き軟質弾性部
材5を設け、その外周に光ファイバ6をゆる(巻回して
やってから、これをガラスクロスの如き耐熱保護層7と
これの押えひも8で被覆し、これをアルミパイプ9内に
納めてその外周にアルミ被鋼線10.10−一−−−を
撚り合わせてなる。FIG. 1 is a cross-sectional view showing an example of such an optical fiber composite overhead ground wire, in which a high-tensile core wire 4, such as a piano wire, is arranged in the center, and a soft elastic member 5, such as a sponge, is arranged around it. The optical fiber 6 is loosely wound around its outer periphery, then covered with a heat-resistant protective layer 7 such as glass cloth and its presser string 8, and placed inside an aluminum pipe 9 and wrapped around its outer periphery. It is made by twisting aluminum covered wires 10.10-1--.
このように構成されていれば、光フアイバ6部分に張力
が加わったとしても高張力心線4がそのデンションに耐
え、光ファイバ6に加わった張力は軟質弾性部材5が吸
収してくれるので、無理な異常張力が光ファイバ6に加
わらないように配慮されているのである。With this configuration, even if tension is applied to the optical fiber 6 portion, the high-tension core wire 4 will withstand the tension, and the tension applied to the optical fiber 6 will be absorbed by the soft elastic member 5. Care is taken to prevent excessive and abnormal tension from being applied to the optical fiber 6.
3−
しかしながら、これは通常の気象状態下での話であり、
豪雪時には話はまた別になる。すなわち、周知の通り電
線には予想以上に雪が付着しやすく、着雪によって電線
の自重は異常に増大し、そのために異常張力が生じて現
象以上の伸びが生ずるのである。この場合その伸びに光
ファイバが追随し切れず、断線や異常歪の発生が起るば
かりではなく、架空地線そのものが断線してしまうとい
う致命的状態に立ち到るおそれすらある。3- However, this is under normal weather conditions;
During heavy snowfall, it's a different story. In other words, as is well known, snow tends to adhere to electric wires more easily than expected, and the weight of the electric wires increases abnormally due to the accumulation of snow, which causes abnormal tension and elongation beyond normal conditions. In this case, the optical fiber will not be able to follow the elongation, and not only will breakage and abnormal distortion occur, but there is also the risk that the overhead ground wire itself will break, a fatal situation.
電線に雪がイ」着するのは上部に積った雪が電線の周囲
を自重によって順次回転落下し、筒状に成長するためで
あることがわかっており、この着雪を防止するには電線
の外周に突起を形成し、その雪の回転を阻止することが
有効であることもわかっている。It is known that snow accumulates on electric wires because the snow that accumulates on the top of the wire rotates and falls around the wire due to its own weight and grows into a cylindrical shape.To prevent this snow from accumulating, It has also been found that it is effective to form protrusions on the outer periphery to prevent the snow from rotating.
このため、豪雪地帯に架線される架空地線には第1図に
示すようなヒレ状突起3を形成し、着雪防止がはかられ
る。とはいえ、現実にこのヒレ状突起3をアルミ被鋼線
10に形成することが非常にむずかしいのである。すな
わち、アルミ被鋼線4−
10は、鋼線1−の外周に例えば押出し法によりアルミ
被2を被覆してなるものであるが架線地線の外径と強度
の面からヒレ状突起3に変形できるアルミ被2層という
ものが限られた厚さしかとれず、これをヒレ状に突出変
形することがむずかしくヒレ状突起3の長さHlが限ら
れてしまい、なかなか十分なH着雪効果が望めないので
ある。For this reason, fin-like protrusions 3 as shown in FIG. 1 are formed on overhead ground wires connected to areas with heavy snowfall to prevent snow from accumulating. However, it is actually very difficult to form these fin-like protrusions 3 on the aluminum covered wire 10. That is, the aluminum coated wire 4-10 is made by coating the outer periphery of the steel wire 1- with an aluminum coat 2 by, for example, an extrusion method. The two deformable aluminum layers can only have a limited thickness, and it is difficult to deform them into fin-like protrusions, which limits the length Hl of the fin-like protrusions 3, making it difficult to achieve sufficient H snow accretion effects. I cannot hope for it.
ヒレ状突起3をもって長くしようとすれば、アルミ被2
の厚さを大にしてやらねばならないことになり、そうす
ればアルミ被鋼線10の線径は太くなり、必然的に架空
地線全体の径が太くなり自重が増大するばかりでなく当
然に風圧荷重が増大し、安全裕度が臨界に近付いてしま
うおそれがある。If you try to make it longer with the fin-like protrusion 3, the aluminum cover 2
In doing so, the wire diameter of the aluminum covered wire 10 becomes thicker, which inevitably increases the diameter of the entire overhead ground wire, which not only increases its own weight but also naturally increases the wind pressure. There is a risk that the load will increase and the safety margin will approach criticality.
本発明はこのような実情にかんがみてなされたものであ
り、架空地線の外径を増大することなく、ヒレ状突起の
長さを十分に大きくし、難着雪効果を一段と増進せしめ
る方法を提供しようとするものである。The present invention has been made in view of these circumstances, and provides a method of increasing the length of the fin-like protrusions to a sufficient extent without increasing the outer diameter of the overhead ground wire, thereby further improving the effect of preventing snow from accreting. This is what we are trying to provide.
以下に実施例に基いて順次説明する。The following is a sequential explanation based on examples.
第2図は本発明に係る難着雪化増進方法を実施した光フ
ァイバ複合架空地線の断面図である。FIG. 2 is a sectional view of an optical fiber composite overhead ground wire in which the method for improving snow accretion resistance according to the present invention is implemented.
本発明においては、アルミ被鋼線10の外径は従来の標
準外径とほぼ等しく保たれ、鋼線1の強度が積極的に大
にされて、アルミ被鋼線自体の標準破断荷重(架空地線
の抗張力)を低下せしめることなく、鋼線1の線径が縮
少せられる。すなわち、通常のアルミ被鋼線の鋼線の引
張強さは180/(g/−程度であるが、これを200
/(y/i以上望むらくは230/1g/−以上とし線
径を細くしても標準抗張力を十分に保持可能とする。そ
して鋼線1の径が細くなった分だけアルミ被2層を厚く
するのである。このJ:うにして、アルミ被2を厚くす
ればヒレ状突起3の突き出し長ざH2をそれだけ長くと
ることが可能となり難着雪効化は一段と確実にそして十
分に増進ぜしめ得る。In the present invention, the outer diameter of the aluminum-covered wire 10 is kept approximately equal to the conventional standard outer diameter, the strength of the steel wire 1 is actively increased, and the standard breaking load of the aluminum-covered wire itself (an aerial The wire diameter of the steel wire 1 can be reduced without reducing the tensile strength of the ground wire. In other words, the tensile strength of a normal aluminum coated wire is about 180/(g/-), but this is
/(y/i or more is preferably 230/1 g/- or more, so that the standard tensile strength can be sufficiently maintained even if the wire diameter is made thinner.Then, the second layer of aluminum is added to correspond to the thinner diameter of the steel wire 1. By increasing the thickness of the aluminum cover 2, the protruding length H2 of the fin-like protrusion 3 can be increased accordingly, and the effect of preventing snow from accreting can be further reliably and sufficiently improved. I can tighten it.
しかして、本発明によれば、難着雪化は増進されるが、
架空地線そのものの外径は従来の標準外径と変らず自重
や風圧荷重が増大して安全率に悪影響を及ぼすおそれは
ない。However, according to the present invention, difficulty in snow accretion is improved; however,
The outer diameter of the overhead ground wire itself is the same as the conventional standard outer diameter, and there is no risk that its own weight or wind pressure load will increase and adversely affect the safety factor.
なお、鋼線の強度を大にした上、第3図に示す如くじし
状突起3を形成しない鋼線1aば従来のまま太く描成し
、ヒレ状突起3を形成する鋼線1bのみを細くするよう
にすれば、相対的に鋼線1bを一層細くしても架空地線
全体は十分な抗張力を保持づ−るから鋼線1bの外周の
アルミ被2は一層厚くすることが可能どなり、これによ
ってヒレ状突起3をより一層長く形成せしめることが可
能となり離着化効果はざらに一層増進せしめ得ることに
なる。In addition, in addition to increasing the strength of the steel wire, the steel wire 1a that does not form the fin-like projections 3 is drawn as thick as before, as shown in FIG. 3, and only the steel wire 1b that forms the fin-like projections 3 is drawn thickly. If it is made thinner, the entire overhead ground wire will maintain sufficient tensile strength even if the steel wire 1b is made thinner, so the aluminum sheath 2 on the outer periphery of the steel wire 1b can be made even thicker. This makes it possible to form the fin-like protrusions 3 even longer, and the detachment effect can be further enhanced.
以上は光ファイバ複合架空地線を例にとって説明したが
、内部に光ファイバを有しない従来のアルミ被鋼撚線の
みをもってなる架空地線に対しても本発明に係る技術思
想を適用できることはいうまでもない。Although the above explanation has been made using an optical fiber composite overhead ground wire as an example, it is clear that the technical idea of the present invention can also be applied to an overhead ground wire that has only conventional aluminum steel-covered wires without an internal optical fiber. Not even.
以上本発明をもってすれば、架空地線の線径は従来のま
まを鞘持しその強度になんら影響を及ぼづ−ことなく、
難着雪化効果を格別に増進せしめ得るものであり、斯界
に与える利益は【ブだし大きい。As described above, with the present invention, the wire diameter of the overhead ground wire can be maintained as before, without affecting its strength in any way.
It can significantly improve the effect of reducing snow accumulation, and the benefits to the industry are enormous.
第1図は従来の架空地線の一例としての光ファイバ複合
架空地線の断面図、第2図および第3図(j、本発明に
係る方法を適用した架空地線の断面図である。
1.1”、1a、 1b :鋼線、2ニアルミ被、3:
ヒレ状突起、10ニアルミ被鋼線。
冨 tfB
第 2 m
第 3 囚
D
lべ t。FIG. 1 is a sectional view of an optical fiber composite overhead ground wire as an example of a conventional overhead ground wire, and FIGS. 2 and 3 (j) are sectional views of an overhead ground wire to which the method according to the present invention is applied. 1.1”, 1a, 1b: Steel wire, 2 aluminum coated, 3:
Fin-like protrusions, 10 Ni aluminum steel wire. Tomi tfB 2nd m 3rd prisoner D lbe t.
Claims (1)
被鋼線の外径をほぼ標準外径に紐持し、鋼線の強度を積
極的に大にしてアルミ被鋼線自体の標準破断荷重を低下
せしめることなく鋼線の線径を縮少させ、その縮少力だ
(プアルミ被層の厚さを増大させ、その肉厚を人にした
アルミ被鋼線のアルミ被覆を突出変形せしめて、架空地
線の外周により長いヒレ状突起を形成ゼしぬるようにす
る架空地線の難@雪化増進方法。 2 架空地線が、パイプ内に光ファイバを収容し、該パ
イプの外周にアルミ被鋼線を撚り合わゼた光ファイバ複
合架空地線である特許請求の範囲第1項記載の架空地線
の同着雪化増進方法。[Scope of Claims] 1. The aluminum-covered wire of an overhead ground wire made by twisting aluminum-covered wires is tied to a substantially standard outer diameter, and the strength of the steel wire is actively increased to create an aluminum-covered ground wire. This is the reduction power of reducing the wire diameter of the steel wire without reducing the standard breaking load of the steel wire itself. Difficult @ snow formation improvement method for overhead ground wires in which the aluminum coating is deformed protrudingly to form longer fin-like protrusions on the outer periphery of the overhead ground wires. 2. The overhead ground wire accommodates the optical fiber in the pipe. The method for promoting snow accretion of an overhead ground wire according to claim 1, which is an optical fiber composite overhead ground wire in which aluminum steel wires are twisted around the outer periphery of the pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58045687A JPH069127B2 (en) | 1983-03-17 | 1983-03-17 | Difficult snow land type overhead ground wire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58045687A JPH069127B2 (en) | 1983-03-17 | 1983-03-17 | Difficult snow land type overhead ground wire |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3186457A Division JPH0687370B2 (en) | 1991-07-25 | 1991-07-25 | Difficult snow land type overhead ground wire |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59171407A true JPS59171407A (en) | 1984-09-27 |
JPH069127B2 JPH069127B2 (en) | 1994-02-02 |
Family
ID=12726296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58045687A Expired - Lifetime JPH069127B2 (en) | 1983-03-17 | 1983-03-17 | Difficult snow land type overhead ground wire |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH069127B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61153226U (en) * | 1985-03-13 | 1986-09-22 | ||
JPS6214621U (en) * | 1985-07-10 | 1987-01-28 | ||
JPS6421918U (en) * | 1987-07-31 | 1989-02-03 | ||
JPH0644825A (en) * | 1991-07-25 | 1994-02-18 | Tohoku Electric Power Co Inc | Snow-repellant type overhead earth cable |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4852078U (en) * | 1971-10-15 | 1973-07-06 | ||
JPS4873772A (en) * | 1972-01-05 | 1973-10-04 | ||
JPS57106120U (en) * | 1980-12-20 | 1982-06-30 | ||
JPS57179384A (en) * | 1981-04-27 | 1982-11-04 | Hiroaki Murakami | Method of electric power saving operation for compressor in accordance with unloading time |
-
1983
- 1983-03-17 JP JP58045687A patent/JPH069127B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4852078U (en) * | 1971-10-15 | 1973-07-06 | ||
JPS4873772A (en) * | 1972-01-05 | 1973-10-04 | ||
JPS57106120U (en) * | 1980-12-20 | 1982-06-30 | ||
JPS57179384A (en) * | 1981-04-27 | 1982-11-04 | Hiroaki Murakami | Method of electric power saving operation for compressor in accordance with unloading time |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61153226U (en) * | 1985-03-13 | 1986-09-22 | ||
JPH0424568Y2 (en) * | 1985-03-13 | 1992-06-10 | ||
JPS6214621U (en) * | 1985-07-10 | 1987-01-28 | ||
JPS6421918U (en) * | 1987-07-31 | 1989-02-03 | ||
JPH0644825A (en) * | 1991-07-25 | 1994-02-18 | Tohoku Electric Power Co Inc | Snow-repellant type overhead earth cable |
Also Published As
Publication number | Publication date |
---|---|
JPH069127B2 (en) | 1994-02-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0337912A (en) | Electric cable and manufacture thereof | |
JPS59171407A (en) | Method of accelerating snowfall resistance of aerial ground wire | |
RU2673568C2 (en) | Overhead communication cable | |
CN2904215Y (en) | Aluminium alloy core alluminium twisted cross-linked polytene insulated water resistance overhead cable | |
JPH0374008A (en) | Aerial transmission line | |
JPS63119110A (en) | Aerial cable | |
JPH0687370B2 (en) | Difficult snow land type overhead ground wire | |
CN210640006U (en) | Large-span anti-superwind-strength anti-vibration and anti-shake aerial cable | |
CN213150446U (en) | Compound carbon fiber air wire | |
CN214123545U (en) | Stretch-proof low-temperature-resistant moisture-proof multi-core cable | |
CN214012600U (en) | Outdoor overhead flexible communication cable | |
CN210896660U (en) | Wear-resistant overhead insulated cable | |
CN210349343U (en) | Flexible towline cable | |
JPS58135514A (en) | Highly flexible submarine cable | |
CN206293183U (en) | A kind of high-strength high-voltage power transmission line with multilayer proofing structure | |
JPH041528Y2 (en) | ||
CN113053570A (en) | High-efficiency energy-saving overhead insulated cable | |
JPH04154004A (en) | Overhead bare electric wire | |
JP2003087953A (en) | Preventing method for breakage and dropping-off of overhead ground wire | |
JPH07113933A (en) | Thunder resistant overhead ground wire | |
JP3036229B2 (en) | Overhead transmission line | |
JP2879779B2 (en) | Manufacturing method of stranded conductor for coated electric wire | |
JPS58152305A (en) | Light composite aerial line | |
JPH03176908A (en) | Elongation restricting wire | |
CN114005596A (en) | Overhead conductor with composite reinforced core |