JPH0615465Y2 - Snow melting equipment for overhead power lines - Google Patents
Snow melting equipment for overhead power linesInfo
- Publication number
- JPH0615465Y2 JPH0615465Y2 JP1987158632U JP15863287U JPH0615465Y2 JP H0615465 Y2 JPH0615465 Y2 JP H0615465Y2 JP 1987158632 U JP1987158632 U JP 1987158632U JP 15863287 U JP15863287 U JP 15863287U JP H0615465 Y2 JPH0615465 Y2 JP H0615465Y2
- Authority
- JP
- Japan
- Prior art keywords
- snow melting
- transmission line
- protective cover
- current transformer
- power transmission
- 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 - Lifetime
Links
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Description
【考案の詳細な説明】 〔技術分野〕 本考案は、架空送電線の融雪装置に関するものである。TECHNICAL FIELD The present invention relates to a snow melting device for an overhead power transmission line.
架空送電線に付着した雪が落下すると、例えば線路下に
温室などがある場合、それを破損するおそれおがあるの
で、このような箇所では送電線に付着した雪を融かす融
雪装置が設けられる。If snow attached to the overhead power transmission line falls, for example, if there is a greenhouse under the railroad, it may be damaged. Therefore, a snow melting device for melting the snow attached to the power transmission line is provided in such a place.
従来の融雪装置は、送電線に変流器を取り付け、その二
次コイルに接続した絶縁電熱線を、送電線にらせん状に
巻き付けることにより、送電線を融雪温度に加熱する構
造となっている（実開昭59-107529号公報）。A conventional snow melting device has a structure in which a current transformer is attached to a power transmission line, and an insulated heating wire connected to a secondary coil of the current transformer is spirally wound around the power transmission line to heat the power transmission line to a snow melting temperature. (Publication No. 59-107529).
この種の融雪装置で、変流器のサイズが大きく、かつ重
量も大きくなる場合は、これを鉄塔に支持させる構造に
する必要があるが、このような融雪装置では、変流器保
護のため防護カバーが被せられる。In this type of snow melting device, if the size and weight of the current transformer is large, it is necessary to have a structure that supports this on a steel tower, but in such a snow melting device, in order to protect the current transformer, A protective cover is put on.
しかし、変流器に防護カバーを被せると、防護カバーの
振動により騒音が発生するという問題のあることが判明
した。However, it has been found that when the protective cover is put on the current transformer, noise is generated due to the vibration of the protective cover.
本考案の目的は、上記のような従来技術の問題点に鑑
み、騒音の小さい架空送電線用融雪装置を提供すること
にある。SUMMARY OF THE INVENTION An object of the present invention is to provide a snow melting device for an overhead power transmission line with low noise in view of the problems of the above-mentioned conventional techniques.
本考案者等は当初、変流器の電磁力の影響を受けないよ
うにするため、防護カバーを非磁性材料であるアルミニ
ウムで製作した。しかしアルミニウム製の防護カバーで
も騒音を十分に低くすることはできなかった。これは、
変流器の漏れ磁束により防護カバーにうず電流が誘起さ
れ、このうず電流と変流器の磁界との相互作用で防護カ
バーが振動し、騒音を発生するためであることが分かっ
た。The present inventors initially manufactured the protective cover of aluminum, which is a non-magnetic material, in order to prevent it from being affected by the electromagnetic force of the current transformer. However, even a protective cover made of aluminum could not reduce the noise sufficiently. this is,
It was found that an eddy current was induced in the protective cover by the leakage flux of the current transformer, and the interaction between the eddy current and the magnetic field of the current transformer caused the protective cover to vibrate and generate noise.
そこで本考案は、送電線の電流を流す一次コイルと、送
電線に巻き付けた絶縁電熱線に電流を供給する二次コイ
ルと、これら一次コイルおよび二次コイルが巻かれた鉄
心とからなる変流器を、基台上に設置し、上記変流器を
覆うように防護カバーを被せてなる送電線用融雪装置に
おいて、上記防護カバーを絶縁材料で形成したことを特
徴とするものである。Therefore, the present invention proposes a current transformer consisting of a primary coil for passing a current of a transmission line, a secondary coil for supplying a current to an insulated heating wire wound around the transmission line, and an iron core around which the primary coil and the secondary coil are wound. In a snow melting device for a power transmission line, in which a device is installed on a base and a protective cover is covered so as to cover the current transformer, the protective cover is formed of an insulating material.
このようにすれば、防護カバーにはうず電流は誘起され
ないし、もちろん電磁力も作用しないので、防護カバー
自体が騒音発生源になることはなくなる。In this way, no eddy current is induced in the protective cover, and of course no electromagnetic force acts, so the protective cover itself does not become a noise source.
以下、本考案の実施例を図面を参照して詳細に説明す
る。Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は本考案に係る融雪装置の一実施例を示す。図に
おいて、11は一次コイル、12は二次コイル、13は鉄心
で、これらは変流器14を構成している。一次コイル11の
両端は送電線（実際には鉄塔部のジャンパ線部分）15に
接続され、一次コイル11には送電線15の電流が流れるよ
うになっている。また二次コイル11には送電線15に巻き
付けられた絶縁電熱線16が接続されおり、これにより絶
縁電熱線16を通電加熱して、送電線15の着氷雪を融かす
ようになっている。FIG. 1 shows an embodiment of a snow melting apparatus according to the present invention. In the figure, 11 is a primary coil, 12 is a secondary coil, 13 is an iron core, and these constitute a current transformer 14. Both ends of the primary coil 11 are connected to a power transmission line (actually, a jumper wire portion of a steel tower part) 15, and a current of the power transmission line 15 flows through the primary coil 11. Further, an insulated heating wire 16 wound around the power transmission line 15 is connected to the secondary coil 11, whereby the insulated heating wire 16 is electrically heated to melt the iced snow on the power transmission line 15.
変流器14はコア受け台17により支持され、防護ゴム18を
介して基台19に取り付けられている。また基台19上に
は、変流器14を覆う箱形の防護カバー20が設置され、基
台19に固定されている。さらに基台19には枠体21が取り
付けられ、この枠体21の上部に、全体を碍子を介して鉄
塔アームに吊下げるための吊下げ金具22が設けられてい
る。The current transformer 14 is supported by a core pedestal 17 and attached to a base 19 via a protective rubber 18. A box-shaped protective cover 20 that covers the current transformer 14 is installed on the base 19 and is fixed to the base 19. Further, a frame 21 is attached to the base 19, and a suspending metal member 22 for suspending the whole on the tower arm via an insulator is provided on the upper portion of the frame 21.
本考案はこのような融雪装置において、防護カバー20を
絶縁材料たとえばＦＲＰ（繊維強化プラスチック）板な
どに形成したことを特徴とするものである。The present invention is characterized in that in such a snow melting apparatus, the protective cover 20 is formed of an insulating material such as an FRP (fiber reinforced plastic) plate.
ＦＲＰ製の防護カバーを使用した融雪装置は、アルミニ
ウム製の防護カバーを使用した融雪装置にくらべ、発生
する騒音が次のように低下する。変流器の中心から１ｍ
の位置では、アルミニウム製の場合100Hz（商用周波数
の２倍）の騒音が63dBであるのに対し、ＦＲＰ製ではそ
れが33dBに低下した。また変流器の真下15m（鉄塔下、
地上１ｍ）の位置でも、アルミニウム製の場合100Hzの
騒音が40dBであるのに対し、ＦＲＰ製ではそれが26dBに
低下した。The snow melting device using the protective cover made of FRP produces less noise as follows than the snow melting device using the protective cover made of aluminum. 1m from the center of the current transformer
In the position of, the noise of 100Hz (twice the commercial frequency) is 63dB for aluminum, whereas it is 33dB for FRP. Also, 15m below the current transformer (under the steel tower,
Even at a position 1m above the ground, the noise of 100Hz is 40dB when made of aluminum, while it is reduced to 26dB when made of FRP.
以上説明したように本考案によれば、架空送電線用融雪
装置の防護カバーを絶縁材料で形成することにより、発
生騒音を大幅に低減することができる。As described above, according to the present invention, the noise generated can be significantly reduced by forming the protective cover of the snow melting device for an overhead power transmission line with an insulating material.
第１図は本考案に係る架空送電線用融雪装置の一実施例
を示す断面図である。 11〜一次コイル、12〜２次コイル、13〜鉄心、14〜変流
器、15〜送電線、16〜絶縁電熱線、19〜基台、20〜防護
カバー。FIG. 1 is a sectional view showing an embodiment of a snow melting device for an overhead power transmission line according to the present invention. 11 to primary coil, 12 to secondary coil, 13 to iron core, 14 to current transformer, 15 to power line, 16 to insulated heating wire, 19 to base, 20 to protective cover.
フロントページの続き (72)考案者 柳沢 健史 栃木県日光市清滝町500 古河電気工業株 式会社日光電気精銅所内 (56)参考文献 特開 昭58−63018（ＪＰ，Ａ) 実開 昭59−107529（ＪＰ，Ｕ)Front page continued (72) Inventor Kenji Yanagisawa 500 Kiyotaki-cho, Nikko, Tochigi Prefecture Furukawa Electric Co., Ltd. Nikko Denki Copper Works (56) References JP 58-63018 (JP, A) Actual development Sho 59- 107529 (JP, U)
Claims (1)
に巻き付けた絶縁電熱線に電流を供給する二次コイル
と、これら一次コイルおよび二次コイルが巻かれた鉄心
とからなる変流器を、基台上に設置し、上記変流器を覆
うように防護カバーを被せてなる送電線用融雪装置にお
いて、上記防護カバーを絶縁材料で形成したことを特徴
とする送電線用融雪装置。Claim: What is claimed is: 1. A current transformer comprising a primary coil for passing a current through a transmission line, a secondary coil for supplying a current to an insulated heating wire wound around the transmission line, and an iron core around which the primary coil and the secondary coil are wound. A snow melting device for a power transmission line, in which a protective device is installed on a base and a protective cover is covered so as to cover the current transformer, wherein the protective cover is formed of an insulating material. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987158632U JPH0615465Y2 (en) | 1987-10-19 | 1987-10-19 | Snow melting equipment for overhead power lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987158632U JPH0615465Y2 (en) | 1987-10-19 | 1987-10-19 | Snow melting equipment for overhead power lines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0164925U JPH0164925U (en) | 1989-04-26 |
| JPH0615465Y2 true JPH0615465Y2 (en) | 1994-04-20 |
Family
ID=31439130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987158632U Expired - Lifetime JPH0615465Y2 (en) | 1987-10-19 | 1987-10-19 | Snow melting equipment for overhead power lines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0615465Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5863018A (en) * | 1981-10-05 | 1983-04-14 | 中部電力株式会社 | Method of preventing stress corrosion disconnection of aerial power distribution wire and rust preventing agent composition mounting implement |
| JPS59107529U (en) * | 1982-12-30 | 1984-07-19 | 東京電力株式会社 | Snow melting equipment for overhead power lines |
-
1987
- 1987-10-19 JP JP1987158632U patent/JPH0615465Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0164925U (en) | 1989-04-26 |
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