JPS58201516A - Trough for cable - Google Patents
Trough for cableInfo
- Publication number
- JPS58201516A JPS58201516A JP57085225A JP8522582A JPS58201516A JP S58201516 A JPS58201516 A JP S58201516A JP 57085225 A JP57085225 A JP 57085225A JP 8522582 A JP8522582 A JP 8522582A JP S58201516 A JPS58201516 A JP S58201516A
- Authority
- JP
- Japan
- Prior art keywords
- trough
- cable
- vinyl chloride
- mentioned
- tunnel
- 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.)
- Pending
Links
Landscapes
- Details Of Indoor Wiring (AREA)
- Laying Of Electric Cables Or Lines Outside (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】
本発明はケーブル用トラフに関し、洞道内にＯＦケーブ
ルを布設する場合に使用するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cable trough, which is used when an OF cable is laid in a tunnel.
洞道内に布設するＯＦケーブルにおいては、万−ＯＦケ
ーブルに地絡事故等が発生し、その地絡７′−りがケー
ブル絶縁油に引火するようなことがあれば、火災が洞道
内金体に拡大するおそれがあるので、密閉構造の防災ト
ラフを洞道内に設け（洞道内のケーブル支持上腕木上に
載設する）、該防災トラフ内にＯＦケーブルを収納する
ことが必要である。For OF cables installed in tunnels, if a ground fault occurs in the OF cable and the ground fault ignites the cable insulating oil, a fire may occur within the tunnel metal body. Therefore, it is necessary to provide a disaster prevention trough with a sealed structure in the tunnel (mounted on the cable supporting arm tree in the tunnel) and to store the OF cable within the disaster prevention trough.
従来、上記の防災トラフには、ガラス繊維強化エポキシ
樹脂又はポリエステル樹脂から成形したものが使用され
ているが、樹脂が熱硬化性樹脂であるために、ハンドレ
イアップ又はプレス法により成形するしかすべがなく、
これらの成形法の作業性の悪さに加え、トラフ単位の長
さが運搬に支障のない約３〜４ｍもの長尺であることか
らして、製造能率に劣るといった不利がある。Traditionally, the above-mentioned disaster prevention troughs have been molded from glass fiber-reinforced epoxy resin or polyester resin, but since the resin is a thermosetting resin, the only way is to mold them using hand lay-up or press methods. There is no
In addition to the poor workability of these molding methods, the length of the trough unit is about 3 to 4 m long, which does not pose a problem in transportation, and therefore there is a disadvantage of poor manufacturing efficiency.
更に、防災トラフにおいては、万一トラフ内ＯＦケーブ
ルが既述したように引火しても、酸素の供給を遮断し、
かつ炎がトラフ外に漏出しないように密閉構造にするこ
とが不可欠であり、ＯＦケーブルの通電発生熱に対する
空冷効果が上記トラフの密閉構造のためにさして期待で
きず、これに加えてトラフ材の熱伝導性が低いので、Ｏ
Ｆケーブルの熱放出抵抗がかなり高く、か＼る点よりＯ
ＩＰケーブルの通電々流の制限が余儀なくされる。ある
いは、か＼る制限に対処するためにトラフ内にＯＦケー
ブル冷却用水冷管を設けなければならないといった面倒
さがある。Furthermore, in the disaster prevention trough, even if the OF cable in the trough ignites as mentioned above, the oxygen supply is cut off,
In addition, it is essential to have a sealed structure to prevent the flame from leaking out of the trough, and because of the sealed structure of the trough, the air cooling effect against the heat generated by energization of the OF cable cannot be expected. Since thermal conductivity is low, O
The heat dissipation resistance of the F cable is quite high, so it is O
It will be necessary to restrict the current flow of IP cables. Alternatively, in order to cope with such limitations, it is necessary to provide a water cooling pipe for cooling the OF cable in the trough, which is a hassle.
本発明に係るケーブル用トラフは、上述した不利を解消
できる構成であり、塩化ビニルに無機質骨材を配合した
組成物から成形してなることを特徴とするものである。The cable trough according to the present invention has a structure that can eliminate the above-mentioned disadvantages, and is characterized by being molded from a composition containing vinyl chloride and an inorganic aggregate.
以下、図面により本発明を説明する。The present invention will be explained below with reference to the drawings.
第１図において、Ａはケーブルトラフを示し、下半片ａ
１と上半片ａ２とからなり、これらの両半片がＨ型ジョ
イナ−ｂ、ｂによって結合されている。これらの上下ト
ラフ片＆１． ａ２は塩化ビニルに無機質骨材を配合し
た組成物から成形されており、その組成物が熱可塑性で
あるから、これらトラフ片は押出成形によって製造する
ことが可能である。無機質骨材には、ガラス短繊維、マ
イカ片等を使用でき、その配合量は塩化ビニル１００部
（重量部）に対し１０−４００部である。In Figure 1, A indicates the cable trough, and the lower half a
1 and an upper half piece a2, and these two halves are joined by H-shaped joiners b, b. These upper and lower trough pieces &1. A2 is molded from a composition of vinyl chloride mixed with inorganic aggregate, and since the composition is thermoplastic, these trough pieces can be manufactured by extrusion molding. Short glass fibers, mica pieces, etc. can be used as the inorganic aggregate, and the amount thereof is 10 to 400 parts per 100 parts (by weight) of vinyl chloride.
上記塩化ビニルには、化学架橋可能なグラフトポリマー
を使用することもできる。而して、上記組成物に、グラ
フトポリマーに化学架橋剤並びに上記無機質骨材を配合
したものを用い、これを上記トラフ片に押出成形後、加
熱によりグラフトポリマーを架橋することが可能である
。A chemically crosslinkable graft polymer can also be used for the vinyl chloride. Thus, it is possible to use a composition in which a graft polymer is blended with a chemical crosslinking agent and the above inorganic aggregate, extrude this into the above trough piece, and then crosslink the graft polymer by heating.
第２図は本発明に係るトラフの使用状態を示しており、
洞道内縦支柱Ｃ１・・・の腕木ｄ、・・・上にトラフＡ
が載置され、該トラフＡ内に単心ＯＦタケ−ル三条θ（
−回線分）が収納されている。FIG. 2 shows the state of use of the trough according to the present invention,
Arm d of vertical support C1 in the tunnel, trough A on top
is placed in the trough A, and a single-core OF takele with three threads θ (
- line) is stored.
トラフＡ、Ａ間は気密構造の継手ｆにより接合されてい
る。The troughs A and A are connected by a joint f having an airtight structure.
第２図において、腕木ｄ、ｄ間の間隔は通常約２ｍであ
り、トラフＡが上記骨材配合のため高剛性を有している
から、腕木ｄ、ｄ間でのトラフ並びにケーブルの自重に
よるたわみは回避できる。特に、塩化ビニルに上記した
架橋塩化ビニルを用いるときは、塩化ビニル樹脂自体の
高剛性のため、上記のたわみ防止に有利である。In Fig. 2, the distance between the arms d and d is usually about 2 m, and since the trough A has high rigidity due to the above-mentioned aggregate composition, the distance between the arms d and d is due to the weight of the trough and the cable. Deflection can be avoided. In particular, when the above-mentioned crosslinked vinyl chloride is used as the vinyl chloride, it is advantageous in preventing the above-mentioned deflection due to the high rigidity of the vinyl chloride resin itself.
上記トラフ内ＯＦケーブルにおいて、万一、地絡事故等
のアークのためにケーブル絶縁油引火の事故が発生して
も、トラフ材の塩化ビニルが建築材料難燃性２級の秀れ
た難燃性を有するから（ＦＲＰの難燃性は２級よりも劣
る）、大きな火災事故にまで拡大するのを防止できる。In the above-mentioned OF cable in the trough, even if an accident occurs in which the cable insulation oil ignites due to an arc caused by a ground fault, the vinyl chloride of the trough material has excellent flame retardancy, which is rated as Class 2 flame retardant for building materials. (The flame retardance of FRP is inferior to class 2), it can prevent the fire from escalating into a major fire accident.
又、トラフ材には熱伝導性に秀れた無機質骨材が多量に
配合されているから、トラフが密閉構造であっても、ト
ラフの壁の良好な熱伝導性のために、ＯＦケーブルから
発生するジュール熱をトラフ壁を介してよく放出でき、
ＯＦケーブルの通電電流の制限（熱抵抗による制限）も
良好に排除できる。In addition, since the trough material contains a large amount of inorganic aggregate with excellent thermal conductivity, even if the trough has a closed structure, the OF cable can be easily The generated Joule heat can be well released through the trough wall,
Limitations on the current flowing through the OF cable (limitations due to thermal resistance) can also be effectively eliminated.
上述した通り、本発明によれば、従来のＦＲＰ製トシト
ラフも製造容易な難燃性トラフを提供でき、しかも、ト
ラフのたわみ剛性、ケーブル通電発生熱に対する熱放出
性も充分であるから、その工業的価値は犬である。As described above, according to the present invention, it is possible to provide a flame-retardant trough that is easy to manufacture even with conventional FRP toshi troughs, and the trough has sufficient bending rigidity and heat dissipation properties against cable energization heat, making it suitable for the industry. The value is a dog.
第１図は本発明に係るトラフの横断面を示す説明図、第
２図は本発明に係るトラフの使用状態を示す斜視説明図
である。
図において、Ａはトラフ、ｅは電カケープルである。FIG. 1 is an explanatory diagram showing a cross section of a trough according to the present invention, and FIG. 2 is a perspective explanatory diagram showing a state in which the trough according to the present invention is used. In the figure, A is a trough and e is an electric cable.
Claims (2)
形してなることを特徴とするケーブル用トラフ。(1) A trough for a cable, characterized in that it is molded from a composition containing vinyl chloride and an inorganic aggregate.
する特許請求の範囲第１項記載のケーブル用トラフ。(2) The cable trough according to claim 1, wherein the vinyl chloride is crosslinked vinyl chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57085225A JPS58201516A (en) | 1982-05-19 | 1982-05-19 | Trough for cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57085225A JPS58201516A (en) | 1982-05-19 | 1982-05-19 | Trough for cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58201516A true JPS58201516A (en) | 1983-11-24 |
Family
ID=13852617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57085225A Pending JPS58201516A (en) | 1982-05-19 | 1982-05-19 | Trough for cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58201516A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6383931U (en) * | 1986-11-21 | 1988-06-01 | ||
| JPH0265023U (en) * | 1988-10-28 | 1990-05-16 |
-
1982
- 1982-05-19 JP JP57085225A patent/JPS58201516A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6383931U (en) * | 1986-11-21 | 1988-06-01 | ||
| JPH0265023U (en) * | 1988-10-28 | 1990-05-16 | ||
| JPH0540659Y2 (en) * | 1988-10-28 | 1993-10-15 |
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