JPS5829482B2 - Fireproof instrumentation cable - Google Patents
Fireproof instrumentation cableInfo
- Publication number
- JPS5829482B2 JPS5829482B2 JP55078837A JP7883780A JPS5829482B2 JP S5829482 B2 JPS5829482 B2 JP S5829482B2 JP 55078837 A JP55078837 A JP 55078837A JP 7883780 A JP7883780 A JP 7883780A JP S5829482 B2 JPS5829482 B2 JP S5829482B2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- power line
- optical fiber
- fireproof
- outer periphery
- 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
- 239000013307 optical fiber Substances 0.000 claims description 24
- 239000000835 fiber Substances 0.000 claims description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 2
- 239000003063 flame retardant Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 description 10
- 239000010410 layer Substances 0.000 description 10
- 239000010445 mica Substances 0.000 description 5
- 229910052618 mica group Inorganic materials 0.000 description 5
- 230000009970 fire resistant effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Insulated Conductors (AREA)
Description
【発明の詳細な説明】
本発明は防災システム等に使用される耐火計装ケーブル
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fireproof instrumentation cable used in disaster prevention systems and the like.
発電所等のプラントに備えられた防災システムに使用さ
れる耐火計装ケーブルは、消防関係の規則によって例え
ばＪＩＳＡ１３０４屋内火災温度曲線により３０分間で
８４０℃に加熱しても１５００■の電圧に耐えるような
特性を要求されている。Fireproof instrumentation cables used in disaster prevention systems installed in plants such as power plants are required to withstand a voltage of 1500cm even when heated to 840°C in 30 minutes according to fire safety regulations, for example, according to the JISA1304 indoor fire temperature curve. characteristics are required.
一方、この種のケーブルはダクト内に多条布設されるた
め蒸焼状態になってもよいよう電線管用耐火電線の特性
も要求され、さらに誘導障害防止のため遮蔽性のものが
要求されることも多い。On the other hand, since this type of cable is installed in multiple strips in a duct, fire-resistant electric wire for conduit tubes is required so that it can be exposed to evaporation, and shielding properties are also required to prevent induction interference. many.
このような要求に答えるため、誘導障害の恐れの無い光
ファイバを電力伝送線と一体化したり、撚り合せたりし
た電気ケーブルが特開昭５４４３８６号公報や実開昭５
１−１２１３３７号公報によって紹介されている。In order to meet these demands, electrical cables in which optical fibers with no risk of induction interference are integrated with power transmission lines or twisted together have been proposed in Japanese Patent Application Laid-open No. 544386 and Japanese Utility Model Application No. 5
1-121337.
また、光ファイバーの素材をソーダガラスや石英ガラス
にすればその耐熱性が非常に高いことを利用して、耐火
ケーブル材料に用いる技術も特開昭５０−１３１５４１
号公報に示されている。In addition, by utilizing the extremely high heat resistance of soda glass or quartz glass as the material for optical fibers, a technology for use in fire-resistant cable materials was developed in accordance with Japanese Patent Application Laid-Open No. 50-131541.
It is shown in the publication No.
本発明は上述のような光ファイバーと電力線とを複合し
た計装ケーブルにおいて、断面扁平にケーブル化した光
ファイバーを電力線の耐火絶縁層として用いるとともに
、ケーブル軸部の電力線を光ファイバーに張力をかけな
いようにするテンションメンバーとして用いたことを特
徴とするものである。The present invention is an instrumentation cable that combines an optical fiber and a power line as described above, in which an optical fiber cabled with a flat cross section is used as a fireproof insulating layer of the power line, and the power line in the shaft part of the cable is arranged so that no tension is applied to the optical fiber. It is characterized by being used as a tension member.
また本発明の目的は、光ファイバーを信号伝送に、電力
線を電力伝送に使用し、在来の耐火電線より高温、高電
圧に耐える無誘導計装ケーブルを提供することにある。Another object of the present invention is to provide a non-inductive instrumentation cable that uses optical fibers for signal transmission and power lines for electric power transmission, and that can withstand higher temperatures and voltages than conventional fire-resistant wires.
以下本発明を図によって詳述する。The present invention will be explained in detail below with reference to the drawings.
第１図は本発明の耐火計装ケーブルの実施例横断面図で
ある。FIG. 1 is a cross-sectional view of an embodiment of the fireproof instrumentation cable of the present invention.
図において、ケーブル軸部には、受信側機器の電源へ電
力を伝送するための電力線１が設けられ、これは例えば
銅線を７本撚り合せて構成されている。In the figure, a power line 1 for transmitting power to a power source of a receiving device is provided on the cable shaft, and this is made up of, for example, seven copper wires twisted together.
実際の使用は例えば本ケーブル２本で電力伝送を行う。In actual use, for example, power is transmitted using two cables.
この電力線１の外周には在来の耐火電線と同様マイカガ
ラステープを縦沿えした第１次絶縁層２を設ける。On the outer periphery of this power line 1, a primary insulating layer 2 is provided with a mica glass tape vertically aligned, similar to conventional fire-resistant electric wires.
そして、その上に断面扁平の光フアイバーケーブル３が
隙間無く撚り合わされ第２次絶縁層を形成している。Then, optical fiber cables 3 having a flat cross section are twisted together without gaps thereon to form a secondary insulating layer.
さらに上記光フアイバーケーブル３の外周には、マイカ
ガラステープのラップ巻きによる押え巻き層４が設けら
れ、その外周に先の光フアイバーケーブル３よりも扁平
率の小さい光フアイバーケーブル５が撚り合されている
。Further, on the outer periphery of the optical fiber cable 3, a pressing layer 4 is provided by wrapping mica glass tape, and on the outer periphery, an optical fiber cable 5 having a smaller flatness than the previous optical fiber cable 3 is twisted. There is.
そして、最外層には難燃材料を配合したビニルシースの
被覆層６が設けられている。A vinyl sheath coating layer 6 containing a flame retardant material is provided as the outermost layer.
上記断面扁平の光フアイバーケーブル３の構成およびそ
の製法を第２図と第３図によって説明する。The structure and manufacturing method of the optical fiber cable 3 having a flat cross section will be explained with reference to FIGS. 2 and 3.
第３図は断面扁平の光フアイバーケーブル３の横断面図
で、石英ガラスのコア７とクラッド８を設けた光ファイ
バー９が複数本並べられ、その外周に不燃テープ例えば
ガラステープ１０が２枚縦添えされガラスヤー７１１に
よって押え巻きを施された構成となっている。FIG. 3 is a cross-sectional view of an optical fiber cable 3 with a flat cross-section, in which a plurality of optical fibers 9 each having a core 7 and a cladding 8 made of quartz glass are lined up, and two pieces of non-combustible tape, for example, glass tape 10 are vertically attached to the outer periphery of the optical fibers 9. It has a configuration in which it is pressed and rolled by a glass yarn 711.
このようなケーブルを得るにはまず第２図に示すように
、光ファイバー９の複数本をゆるく束ねてガラステープ
１０で被覆しガラスヤーン１１の押え巻きを施こした後
、これを第１図の電力線１の外周に撚り合わせる際にロ
ーラーやダイスによって扁平に押しつぶしながらただち
にマイカガラステープ４の押え巻きを施すようにする。To obtain such a cable, first, as shown in FIG. 2, a plurality of optical fibers 9 are loosely bundled, covered with a glass tape 10, and wrapped with a glass yarn 11. When twisting around the outer periphery of the power line 1, the mica glass tape 4 is immediately pressed and wrapped while flattening it with a roller or die.
このとき撚り合わせる光フアイバーケーブル３の扁平率
と数とを適当に選定しておけば電力線１の外周を隙間無
く覆うように配置することができる。At this time, if the flatness and number of the optical fiber cables 3 to be twisted are appropriately selected, they can be arranged so as to cover the outer periphery of the power line 1 without any gaps.
なお、断面扁平の光フアイバーケーブル３は上述のよう
に複数本の光ファイバを束ねたバンドルファイバと呼ば
れるものであり、種々の扁平度にしても光の伝送特性に
は影響がない。Note that the optical fiber cable 3 having a flat cross section is called a bundle fiber in which a plurality of optical fibers are bundled together as described above, and the optical transmission characteristics are not affected even if the cable is made into various degrees of flatness.
以上の構成の本発明の耐火計装ケーブルにおいては、電
力線１の電気的な絶縁層は縦沿のマイカガラステープ層
２による第１次絶縁層と断面扁平の光フアイバーケーブ
ル３および５を撚り合せた第２次絶縁層とマイカガラス
テープの押え巻層４によって形成されている。In the fireproof instrumentation cable of the present invention having the above configuration, the electrical insulation layer of the power line 1 is made by twisting together the primary insulation layer of the vertical mica glass tape layer 2 and the optical fiber cables 3 and 5 having a flat cross section. It is formed by a secondary insulating layer and a pressing layer 4 of mica glass tape.
従って火災等による高温雰囲気においても溶融したり焼
失することが無く、電力線を露出させないので高耐電圧
特性を維持することができる。Therefore, even in a high-temperature atmosphere due to fire or the like, it will not melt or burn down, and the power line will not be exposed, so high withstand voltage characteristics can be maintained.
また、バンドルファイバを用いたことによって上記のケ
ーブルの扁平化も容易であり、かつかりにもし一部破断
しても伝号伝送が可能なため火災発生時長時間信号伝送
機能を維持する計装ケーブルとして好適する。In addition, by using bundled fibers, it is easy to flatten the cable mentioned above, and even if a part of the cable breaks, signal transmission is possible, so the instrumentation maintains the signal transmission function for a long time in the event of a fire. Suitable as a cable.
また、バンドルファイバであるため接続部等においても
断面積が大きく各種の衝撃に耐え得る利点を有している
。Further, since it is a bundle fiber, it has a large cross-sectional area at the connecting portion, etc., and has the advantage of being able to withstand various types of impact.
第１図は本発明の耐火計装ケーブル実施例横断面図、第
３図は断面扁平の光フアイバーケーブル３の横断面図、
第２図はその製造方法の説明図で、１は電力線、３およ
び５は断面扁平の光フアイバーケーブル、６は被覆層、
１０は不燃テープを示している。FIG. 1 is a cross-sectional view of an embodiment of the fireproof instrumentation cable of the present invention, and FIG. 3 is a cross-sectional view of an optical fiber cable 3 with a flat cross-section.
FIG. 2 is an explanatory diagram of the manufacturing method, in which 1 is a power line, 3 and 5 are optical fiber cables with a flat cross section, 6 is a coating layer,
10 indicates a nonflammable tape.
Claims (1)
周に撚り合わされた複数本の光フアイバーケーブルと、
さらにその外周を覆う難燃シースとから戊る計装ケーブ
ルにおいて、前記光フアイバーケーブルは複数本の光フ
ァイバを束ね不燃テープで包囲した断面扁平のバンドル
ファイバで、前記電力線は前記バンドルファイバによっ
てその外周を隙間無く覆われていることを特徴とする耐
火計装ケーブル。1. A power line provided on the cable shaft, a plurality of optical fiber cables twisted around the outer periphery of the power line,
Furthermore, in the instrumentation cable that is cut from a flame-retardant sheath covering the outer periphery, the optical fiber cable is a bundle fiber with a flat cross section made by bundling a plurality of optical fibers and surrounding it with a non-combustible tape, and the power line is connected to the outer periphery by the bundle fiber. A fireproof instrumentation cable characterized by being covered with no gaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55078837A JPS5829482B2 (en) | 1980-06-11 | 1980-06-11 | Fireproof instrumentation cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55078837A JPS5829482B2 (en) | 1980-06-11 | 1980-06-11 | Fireproof instrumentation cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS575010A JPS575010A (en) | 1982-01-11 |
| JPS5829482B2 true JPS5829482B2 (en) | 1983-06-23 |
Family
ID=13672935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55078837A Expired JPS5829482B2 (en) | 1980-06-11 | 1980-06-11 | Fireproof instrumentation cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5829482B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6046278U (en) * | 1983-09-08 | 1985-04-01 | 株式会社学習研究社 | Writing instrument with lead storage tube |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4818060A (en) * | 1987-03-31 | 1989-04-04 | American Telephone And Telegraph Company, At&T Bell Laboratories | Optical fiber building cables |
| US5468913A (en) * | 1993-08-19 | 1995-11-21 | The United States Of America As Represented By The Secretary Of The Navy | Electro-optical coaxial tow cable |
| WO2003098307A1 (en) * | 2002-05-17 | 2003-11-27 | Sumitomo Electric Industries, Ltd. | Tape-like optical fiber core, production method therefor, tape core-carrying connector, tape core-carrying optical fiber array, and optical wiring system |
-
1980
- 1980-06-11 JP JP55078837A patent/JPS5829482B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6046278U (en) * | 1983-09-08 | 1985-04-01 | 株式会社学習研究社 | Writing instrument with lead storage tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS575010A (en) | 1982-01-11 |
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