JPH0226182Y2 - - Google Patents
Info
- Publication number
- JPH0226182Y2 JPH0226182Y2 JP1985126405U JP12640585U JPH0226182Y2 JP H0226182 Y2 JPH0226182 Y2 JP H0226182Y2 JP 1985126405 U JP1985126405 U JP 1985126405U JP 12640585 U JP12640585 U JP 12640585U JP H0226182 Y2 JPH0226182 Y2 JP H0226182Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- receiving
- cable
- piece
- vertical metal
- 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
Links
- 239000002184 metal Substances 0.000 claims description 44
- 239000012212 insulator Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は、洞道内において電力ケーブルを布設
するために用いられるケーブル受装置に関するも
のである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cable receiving device used for laying power cables in a tunnel.
［従来の技術］
一般に、洞道内で布設される電力ケーブルの受
材には、鋼板から成る断面四角形の受金物が立金
物により支持されている。しかし、この受金物の
上に電力ケーブルを載置すると、受金物と立金物
とは電力ケーブルから発生する磁束のために渦電
流が発生し、この渦電流による発熱などの損失が
生じる。[Prior Art] Generally, in a receiving material for a power cable laid in a tunnel, a receiving material made of a steel plate and having a rectangular cross section is supported by an upright metal receiving material. However, when a power cable is placed on this metal receiving object, an eddy current is generated between the receiving object and the vertical metal object due to the magnetic flux generated from the power cable, and this eddy current causes loss such as heat generation.
第３図は例として立金物１と受金物２の長手方
向の内部磁界の強さを表したグラフ図である。立
金物１の長さを220mmとし、この立金物１から磁
気的な接続状態を保持したまま水平方向に張り出
した受金物２の長さは1000mmとされ、受金物２の
上に300mm間隔で３本のケーブルＣが載置されて
いる。ここで、ケーブルＣに1900Aの電流を流し
た場合に生じる立金物１と受金物２に対する磁界
の強さＨ（AT／ｍ）は、実測によればそれぞれ
実線で示すような分布となる。そして、立金物
１、受金物２に発生する渦電流は内部磁界の大き
さにほぼ比例し、上述のような損失が生じる。 FIG. 3 is a graph showing, as an example, the strength of the internal magnetic field in the longitudinal direction of the vertical metal piece 1 and the metal receiving piece 2. The length of the standing metal piece 1 is 220 mm, and the length of the receiving piece 2 that extends horizontally from the standing metal piece 1 while maintaining the magnetic connection state is 1000 mm. A book cable C is placed there. Here, according to actual measurements, the magnetic field strength H (AT/m) generated when a current of 1900 A is passed through the cable C on the vertical metal piece 1 and the metal receiving piece 2 has a distribution as shown by the solid line. The eddy current generated in the vertical metal piece 1 and the metal receiving piece 2 is approximately proportional to the magnitude of the internal magnetic field, resulting in the above-mentioned loss.
また、例えば実開昭57−34129号公報に開示さ
れているように、金属線の周囲に合成樹脂板を取
り付けたものも知られている。この場合には、渦
電流の発生は殆どないとしても、電力ケーブルを
載置した場合に強度的に弱いという問題がある。 Furthermore, as disclosed in, for example, Japanese Utility Model Application Publication No. 57-34129, a synthetic resin plate attached around a metal wire is also known. In this case, although there is almost no eddy current generation, there is a problem that the strength is weak when a power cable is placed on the cable.
［考案の目的］
本考案の目的は、上述の送電損失の何分の１か
を防止するために、受金物を立金物から磁気的に
絶縁することにより、送電損失の発生を減少させ
るケーブル受装置を提供することにある。[Purpose of the invention] The purpose of the invention is to provide a cable receiver that reduces the occurrence of power transmission losses by magnetically insulating the receiving object from the upright metal object in order to prevent a fraction of the above-mentioned power transmission loss. The goal is to provide equipment.
［考案の概要］
上述の目的を達成するための本考案の要旨は、
布設電力ケーブルを載置する受金物を立金物に固
定する場合において、前記受金物の基部を磁気絶
縁体を介して前記立金物に取り付けたことを特徴
とするケーブル受装置である。[Summary of the invention] The gist of the invention to achieve the above objectives is as follows:
This cable receiving device is characterized in that, when a metal receiving object on which a laid power cable is placed is fixed to a vertical metal object, the base of the metal receiving object is attached to the vertical metal object via a magnetic insulator.
［考案の実施例］
本考案を図示の実施例に基づいて詳細に説明す
る。[Embodiments of the invention] The invention will be described in detail based on illustrated embodiments.
第１図は立金物１から受金物２を水平方向に張
り出した実施例であり、立金物１及び受金物２は
鋼製とされ、受金物２には断面四角形の形鋼が用
いられている。ここで、受金物２の基部には立金
物１を両側から挾む２つの板体状の取付部３ａ，
３ｂが設けられており、これらの取付部３ａ，３
ｂはボルト４・ナツト５によつて立金物１に固定
されている。なお、ボルト４には筒体の両端部に
鍔部を有する合成樹脂等から成る絶縁ワツシヤ６
が挿通されており、この絶縁ワツシヤ６により立
金物１と受金物２との間、及びボルト４と立金物
１との間は磁気的に絶縁されるようになつてい
る。なお、Ｃは受金物の上に載置した電力ケーブ
ルである。 Fig. 1 shows an embodiment in which a support 2 is extended horizontally from a vertical metal 1. The vertical metal 1 and the metal support 2 are made of steel, and the metal support 2 is made of steel with a square cross section. . Here, the base of the metal holder 2 has two plate-like mounting parts 3a that sandwich the vertical metal 1 from both sides.
3b are provided, and these mounting parts 3a, 3
b is fixed to the vertical hardware 1 with bolts 4 and nuts 5. The bolt 4 is provided with an insulating washer 6 made of synthetic resin or the like and having flanges at both ends of the cylindrical body.
is inserted therethrough, and the insulating washer 6 provides magnetic insulation between the vertical metal piece 1 and the metal support 2, and between the bolt 4 and the vertical metal piece 1. Note that C is a power cable placed on the metal receiver.
従つて、立金物１と受金物２との磁気的な絶縁
により、第３図に一点鎖線で示すような受金物２
と立金物１との間を通過する磁束は減少されるこ
とになる。また、電力ケーブルＣを流れる電流に
より形成される立金物１と受金物２の磁界の強さ
Ｈは、実測によればそれぞれ第３図における点線
で示すようになり、従来の実線の場合よりも少な
くなる。 Therefore, due to the magnetic insulation between the vertical metal piece 1 and the metal receiving piece 2, the metal receiving piece 2 as shown by the dashed line in FIG.
The magnetic flux passing between the vertical metal member 1 and the vertical metal member 1 will be reduced. Furthermore, according to actual measurements, the magnetic field strength H of the vertical metal piece 1 and the metal receiving piece 2 formed by the current flowing through the power cable C is as shown by the dotted lines in FIG. 3, which is higher than the conventional solid line. It becomes less.
なお、第４図は第３図の測定と同様な受装置に
おいて、ケーブルＣを流れる電流の大きさに対す
る渦電流による損失の実測グラフ図を示してい
る。ここで、実線で示す従来の立金物１と受金物
２を磁気的に接続した場合に比較して、本考案の
ように絶縁した場合の損失は約20％程度減少する
ことが判る。 Incidentally, FIG. 4 shows an actual measurement graph of the loss due to eddy current with respect to the magnitude of the current flowing through the cable C in a receiving device similar to the measurement in FIG. 3. Here, it can be seen that the loss is reduced by about 20% in the case of insulating them as in the present invention, compared to the conventional case where the vertical metal part 1 and the metal receiving part 2 are magnetically connected, as shown by the solid line.
［考案の効果］
以上説明したように本考案に係るケーブル受装
置は、受金物と立金物との間に磁気絶縁体を介在
しているために、受金物の磁気通路が減少し、渦
電流の発生を減少させることが可能となる。[Effects of the invention] As explained above, in the cable receiving device according to the invention, since a magnetic insulator is interposed between the receiving metal object and the vertical metal object, the magnetic path of the receiving object is reduced and eddy current is generated. This makes it possible to reduce the occurrence of
図面第１図、第２図は本考案に係るケーブル受
装置の一実施例を示し、第１図はその構成図、第
２図は要部断面図、第３図は磁界の強さを示すグ
ラフ図、第４図はケーブルを流れる電流に対する
損失のグラフ図である。
符号１は立金物、２は受金物、３ａ，３ｂは取
付部、４はボルト、５はナツト、６は絶縁ワツシ
ヤである。
Drawings 1 and 2 show an embodiment of the cable receiving device according to the present invention, FIG. 1 is a configuration diagram thereof, FIG. 2 is a sectional view of the main part, and FIG. 3 is a diagram showing the strength of the magnetic field. Graph Figure 4 is a graph of loss versus current flowing through the cable. Reference numeral 1 is a vertical metal piece, 2 is a metal holder, 3a and 3b are mounting parts, 4 is a bolt, 5 is a nut, and 6 is an insulating washer.
Claims (1)
固定する場合において、前記受金物の基部を磁気
絶縁体を介して前記立金物に取り付けたことを特
徴とするケーブル受装置。 1. A cable receiving device, characterized in that, in the case where a metal receiving object on which a laid power cable is placed is fixed to a vertical metal object, a base of the metal receiving object is attached to the vertical metal object via a magnetic insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985126405U JPH0226182Y2 (en) | 1985-08-19 | 1985-08-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985126405U JPH0226182Y2 (en) | 1985-08-19 | 1985-08-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6238027U JPS6238027U (en) | 1987-03-06 |
| JPH0226182Y2 true JPH0226182Y2 (en) | 1990-07-17 |
Family
ID=31020178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985126405U Expired JPH0226182Y2 (en) | 1985-08-19 | 1985-08-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0226182Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5734129B2 (en) * | 1973-10-09 | 1982-07-21 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5734129U (en) * | 1980-07-30 | 1982-02-23 |
-
1985
- 1985-08-19 JP JP1985126405U patent/JPH0226182Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5734129B2 (en) * | 1973-10-09 | 1982-07-21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6238027U (en) | 1987-03-06 |
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