JPH04253107A - Electric cable with low wind noise - Google Patents
Electric cable with low wind noiseInfo
- Publication number
- JPH04253107A JPH04253107A JP3026727A JP2672791A JPH04253107A JP H04253107 A JPH04253107 A JP H04253107A JP 3026727 A JP3026727 A JP 3026727A JP 2672791 A JP2672791 A JP 2672791A JP H04253107 A JPH04253107 A JP H04253107A
- Authority
- JP
- Japan
- Prior art keywords
- spiral
- spiral rod
- electric cable
- wind noise
- electric wire
- 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
- 238000004804 winding Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 abstract description 13
- 238000007796 conventional method Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、電線に風が吹きつけた
ときに発生する風音を防止した低風音電線に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low wind noise electric wire that prevents wind noise generated when wind blows on the electric wire.
【０００２】0002
【従来の技術】架設された電線に風が吹きつけると風音
が発生し、騒音公害を起こすことがある。この風音を防
止するには、電線の外周にスパイラルロッドを巻き付け
ることが有効とされている。この方法は電線外周にらせ
ん状の突起を形成することによりカルマン渦の発生を抑
えて、風音を抑制するものである。しかし電線外周にス
パイラルロッドを巻き付けると、降雨時などにコロナハ
ム音が発生しやすくなる。これを防止する手段としては
従来、図４に示すように電線１の外周に隣接する２本の
スパイラルロッド２を１組として巻き付け、スパイラル
ロッド２付近の電界を緩和してコロナ放電を弱めるとい
う方法が提案されている。2. Description of the Related Art When wind blows on installed electric wires, wind noise is generated, which can cause noise pollution. In order to prevent this wind noise, it is considered effective to wrap a spiral rod around the outer circumference of the electric wire. This method suppresses the generation of Karman vortices by forming spiral protrusions on the outer periphery of the electric wire, thereby suppressing wind noise. However, when a spiral rod is wrapped around the outer circumference of a wire, corona hum sounds are more likely to occur during times of rain. A conventional method for preventing this is to wrap two adjacent spiral rods 2 around the outer periphery of the electric wire 1 as a set, as shown in FIG. 4, to relax the electric field near the spiral rods 2 and weaken the corona discharge. is proposed.
【０００３】0003
【発明が解決しようとする課題】しかしスパイラルロッ
ドを２本１組で巻き付けると、１本巻きに比べスパイラ
ルロッドの重量が２倍になり、電線および支持物の荷重
負担が大きくなってしまうという問題がある。[Problem to be Solved by the Invention] However, when two spiral rods are wound in a set, the weight of the spiral rod becomes twice as much as when one spiral rod is wound, and the load burden on the electric wires and supports increases. There is.
【０００４】0004
【課題を解決するための手段】本発明者等は種々の実験
の結果から、電線外周にスパイラルロッドを２本１組で
巻き付けた場合、その一方の外径を小さくしてもコロナ
ハム音の低減効果はほとんど変わらないことを見出した
。本発明は、このような知見に基づきなされたもので、
その構成は、電線外周にスパイラルロッドを２本１組で
巻き付けてなる低風音電線において、同じ組のうちの一
方のスパイラルロッドを他方のスパイラルロッドより細
くしたことを特徴とするものである。[Means for Solving the Problems] Based on the results of various experiments, the inventors of the present invention have found that when two spiral rods are wound around the outer circumference of an electric wire, corona hum noise can be reduced even if the outer diameter of one of the spiral rods is made smaller. We found that the effects were almost the same. The present invention was made based on such knowledge,
The structure is characterized in that in a low wind noise electric wire made up of two sets of spiral rods wound around the outer periphery of the wire, one spiral rod of the same set is made thinner than the other spiral rod.
【０００５】[0005]
【作用】低風音電線の場合、風音低減効果を得るため、
電線の外径に対するスパイラルロッドの外径が定められ
ている。しかしスパイラルロッドを２本１組で巻き付け
る場合は、その一方を細くしても風音低減効果は変わら
ない。２本１組のうちの一方のスパイラルロッドを細く
すれば、そのぶん電線および支持物の荷重負担が軽減さ
れる。なお細い方のスパイラルロッドは、その外径が小
さすぎるとコロナハム音低減効果が損なわれるので、そ
の外径ｄ１は太い方のスパイラルロッドの外径ｄ２の１
／２ 以上とすることが好ましい。[Effect] In the case of low wind noise electric wires, in order to obtain the wind noise reduction effect,
The outer diameter of the spiral rod is determined relative to the outer diameter of the electric wire. However, when spiral rods are wound in pairs, the wind noise reduction effect remains the same even if one of the spiral rods is made thinner. If one of the spiral rods in a set is made thinner, the load on the electric wire and the support will be reduced accordingly. Note that if the outer diameter of the thinner spiral rod is too small, the corona hum noise reduction effect will be lost, so the outer diameter d1 of the thinner spiral rod is 1 of the outer diameter d2 of the thicker spiral rod.
/2 or more is preferable.
【０００６】[0006]
【実施例】以下、本発明の実施例を図面を参照して詳細
に説明する。図１は本発明の一実施例を示す。この低風
音電線は、電線１の外周に従来と同じサイズの太いスパ
イラルロッド２と、それより細いスパイラルロッド３を
隣接させて２本１組で巻き付けたものである。Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of the invention. This low wind noise electric wire is made by winding a thick spiral rod 2 of the same size as conventional wires and a thinner spiral rod 3 adjacent to each other around the outer periphery of an electric wire 1 in pairs.
【０００７】例えば電線１がＡＣＳＲ ８１０ｍｍ２（
外径３８．４ｍｍ） である場合、風音防止のための標
準のスパイラルロッドは外径７ｍｍ、ピッチ ４００ｍ
ｍである。このスパイラルロッドを太い方のスパイラル
ロッド２とし、これと、それより細い種々の径のスパイ
ラルロッド３を２本１組として巻いた場合の、コロナハ
ム音レベルの測定結果を図２に示す。この結果によれば
、細い方のスパイラルロッドの外径ｄ１が、太い方のス
パイラルロッドの外径ｄ２の１／２ 以上であれば、コ
ロナハム音低減効果は、従来の低風音電線（スパイラル
ロッドの外径が２本ともｄ２）とほとんど変わらないこ
とが明らかである。For example, the electric wire 1 has an ACSR of 810 mm2 (
(outer diameter 38.4 mm), the standard spiral rod for wind noise prevention has an outer diameter of 7 mm and a pitch of 400 m.
It is m. FIG. 2 shows the measurement results of the corona hum sound level when this spiral rod is used as the thicker spiral rod 2, and two spiral rods 3 of various diameters smaller than the thicker spiral rod are wound as a set. According to this result, if the outer diameter d1 of the thinner spiral rod is 1/2 or more of the outer diameter d2 of the thicker spiral rod, the corona hum noise reduction effect is lower than that of the conventional low wind noise electric wire (spiral rod It is clear that the outer diameters of the two wires are almost the same as d2).
【０００８】図３は本発明の他の実施例を示す。この低
風音電線は、電線１の外周の、中心軸線に対し対称な位
置にそれぞれ、太いスパイラルロッド２と細いスパイラ
ルロッド３を２本１組として巻き付けたものである。こ
のように２組のスパイラルロッドを巻き付けると風音低
減効果を大きくできる。FIG. 3 shows another embodiment of the invention. This low wind noise electric wire is made by winding a thick spiral rod 2 and a thin spiral rod 3 in sets of two on the outer periphery of an electric wire 1 at positions symmetrical with respect to the central axis. By winding two sets of spiral rods in this manner, the wind noise reduction effect can be increased.
【０００９】[0009]
【発明の効果】以上説明したように本発明に係る低風音
電線は、風音低減効果、コロナハム音低減効果を損なう
ことなくスパイラルロッド巻付けによる電線および支持
物の荷重負担を低減できるという顕著な効果がある。[Effects of the Invention] As explained above, the low wind noise electric wire according to the present invention is remarkable in that it can reduce the load burden on the electric wire and the support by winding the spiral rod without impairing the wind noise reduction effect and the corona hum noise reduction effect. It has a great effect.
【図１】 本発明の一実施例に係る低風音電線の断面
図。FIG. 1 is a sectional view of a low wind noise electric wire according to an embodiment of the present invention.
【図２】 図１の低風音電線のコロナハム音低減効果
を示すグラフ。FIG. 2 is a graph showing the corona hum noise reduction effect of the low wind noise electric wire in FIG. 1.
【図３】 本発明の他の実施例に係る低風音電線の断
面図。FIG. 3 is a sectional view of a low wind noise electric wire according to another embodiment of the present invention.
【図４】 従来の低風音電線の断面図。[Fig. 4] Cross-sectional view of a conventional low wind noise electric wire.
１：電線 ２：太い方のスパイラルロッド
３：細い方のスパイラルロッド1: Electric wire 2: Thick spiral rod
3: Thinner spiral rod
Claims (2)
組で巻き付けてなる低風音電線において、同じ組のうち
の一方のスパイラルロッドを他方のスパイラルロッドよ
り細くしたことを特徴とする低風音電線。[Claim 1] Two spiral rods are installed on the outer periphery of the electric wire.
A low wind noise electric wire formed by winding in pairs, characterized in that one spiral rod of the same group is made thinner than the other spiral rod.
細い方のスパイラルロッドの外径ｄ１は、太い方のスパ
イラルロッドの外径ｄ２の１／２ 以上であることを特
徴とするもの。2. The low wind noise electric wire according to claim 1,
The outer diameter d1 of the thinner spiral rod is 1/2 or more of the outer diameter d2 of the thicker spiral rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3026727A JP2945149B2 (en) | 1991-01-29 | 1991-01-29 | Low wind noise electric wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3026727A JP2945149B2 (en) | 1991-01-29 | 1991-01-29 | Low wind noise electric wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04253107A true JPH04253107A (en) | 1992-09-08 |
| JP2945149B2 JP2945149B2 (en) | 1999-09-06 |
Family
ID=12201357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3026727A Expired - Fee Related JP2945149B2 (en) | 1991-01-29 | 1991-01-29 | Low wind noise electric wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2945149B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5808238A (en) * | 1995-11-24 | 1998-09-15 | The Furukawa Electric Co., Ltd. | Multiple-cable power for transmission line system |
-
1991
- 1991-01-29 JP JP3026727A patent/JP2945149B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5808238A (en) * | 1995-11-24 | 1998-09-15 | The Furukawa Electric Co., Ltd. | Multiple-cable power for transmission line system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2945149B2 (en) | 1999-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |