JP2508372B2 - Spacer type optical fiber cable - Google Patents
Spacer type optical fiber cableInfo
- Publication number
- JP2508372B2 JP2508372B2 JP2175897A JP17589790A JP2508372B2 JP 2508372 B2 JP2508372 B2 JP 2508372B2 JP 2175897 A JP2175897 A JP 2175897A JP 17589790 A JP17589790 A JP 17589790A JP 2508372 B2 JP2508372 B2 JP 2508372B2
- Authority
- JP
- Japan
- Prior art keywords
- spacer
- optical fiber
- melting point
- cable
- low melting
- 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
- Measuring Temperature Or Quantity Of Heat (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Insulated Conductors (AREA)
- Communication Cables (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、低融点合金線からなる異常温度検知線を
収容したスペーサ型光ファイバケーブルに関する。Description: [Industrial application] The present invention relates to a spacer type optical fiber cable accommodating an abnormal temperature detection wire made of a low melting point alloy wire.
［従来の技術］ 光エネルギー伝送用の光ケーブルまたは電力ケーブル
内での発生する熱により、ケーブルが断線すると火災の
発生等の危険な状態になるので、ケーブル内の熱を検知
するため、従来、ケーブル本体に熱電対を挿入する方法
等が考えられている。[Prior Art] Since the heat generated in the optical cable for transmitting optical energy or the power cable causes a dangerous state such as a fire when the cable is broken, the conventional cable is used to detect the heat in the cable. A method of inserting a thermocouple into the main body has been considered.
［発明が解決しようとする問題点］ 熱電対をケーブルに挿入する場合、熱電対はセンサー
部分近傍しか温度検知できないため、ケーブルの長手方
向に温度検知するためには、多数本の熱電対およびリー
ド線を必要とした。しかるに、熱電対およびリード線は
外径が太いため、ケーブル内への収容が難しく、特に多
数本の熱電対、リード線の場合は顕著であった。さら
に、熱電対を長手方向に一定間隔でケーブルに挿入しな
ければならないので、ケーブルの製造が難しい欠点があ
った。[Problems to be Solved by the Invention] When a thermocouple is inserted into a cable, the temperature of the thermocouple can be detected only near the sensor portion. Therefore, in order to detect the temperature in the longitudinal direction of the cable, a large number of thermocouples and leads are used. Needed a line. However, since the thermocouples and the lead wires have large outer diameters, it is difficult to accommodate them in the cable, and this is remarkable especially in the case of a large number of thermocouples and lead wires. Further, since the thermocouples have to be inserted into the cable at regular intervals in the longitudinal direction, it is difficult to manufacture the cable.
この発明は、このような点に鑑みてなされたもので、
ケーブル内の小スペースに収容でき、かつケーブル長手
方向に異常温度の検出できる検知線を入れたスペーサ型
光ファイバケーブルを提供することを目的とする。The present invention has been made in view of such points,
It is an object of the present invention to provide a spacer type optical fiber cable having a detection line that can be accommodated in a small space inside the cable and that can detect an abnormal temperature in the longitudinal direction of the cable.
［問題点を解決するための手段］ 上記目的は、スペーサの外周に複数の溝を設け、該溝
のうち少くともひとつを空溝とし、他の溝のうち少くと
もひとつに光ファイバを収容し、前記スペーサの外側に
押え巻テープ、シースを順次施してなるスペーサ型光フ
ァイバケーブルにおいて、低融点合金線の外周上に直接
ディスク型支持部材を間歇的に設けた異常温度検知線を
前記スペーサの空溝に収容したことにより達成される。[Means for Solving the Problems] The above object is to provide a plurality of grooves on the outer periphery of a spacer, at least one of the grooves is a hollow groove, and at least one of the other grooves accommodates an optical fiber. In a spacer type optical fiber cable in which a holding tape and a sheath are sequentially provided on the outer side of the spacer, an abnormal temperature detection line in which a disc type supporting member is intermittently provided directly on the outer periphery of a low melting point alloy wire is provided in the spacer. This is achieved by housing in the groove.
また、低融点合金線は単一のものだけでなく、融点温
度が異なる低融点合金線を複数本（例えば80℃,100℃,1
20℃等）収容することにより、外気温が何度位まで上昇
したかを検知するようにすることもできる。Also, the low melting point alloy wire is not limited to a single wire, but multiple low melting point alloy wires with different melting point temperatures (for example, 80 ° C, 100 ° C, 1
It is possible to detect how many times the outside air temperature has risen by accommodating it (20 ℃, etc.).
なお、低融点合金線のケーブル端末にリレー回路等を
設けることにより、破断時に警報を発するようにしても
よい。Note that a warning may be issued at the time of breakage by providing a relay circuit or the like at the cable end of the low melting point alloy wire.
［作用］ 低融点合金線は線条であるので、温度検知がケーブル
長手方向に一様に可能となり、かつケーブルにかさばら
ず収容される。[Operation] Since the low melting point alloy wire is a filament, the temperature can be uniformly detected in the longitudinal direction of the cable, and it is accommodated in the cable without being bulky.
［実施例］ 第１図は本発明の実施例について示したものである。
光ファイバ２を収容するスペーサ３の空溝に低融点合金
線１を収容している。この低融点合金線１は、外径1mm
である。低融点合金線１は外気等の温度上昇により所定
温度（例えば80℃）に達すると、スペーサ溝内で溶融し
て破断する。ただ、低融点合金線１の外周全体がプラス
チックで被覆されているような場合には、溶融しても破
断に至らないことも考えられる。そこで低融点合金線１
の外周上に直接ディスク型支持部材15を間歇的に設け
た。これによりスペーサの溝に挿入でき、かつ低融点合
金線の破断を確実なものとすることが可能となる。Embodiments FIG. 1 shows an embodiment of the present invention.
The low melting point alloy wire 1 is housed in the groove of the spacer 3 which houses the optical fiber 2. This low melting point alloy wire 1 has an outer diameter of 1 mm
Is. When the low melting point alloy wire 1 reaches a predetermined temperature (for example, 80 ° C.) due to a temperature rise of outside air or the like, it melts and breaks in the spacer groove. However, in the case where the entire outer periphery of the low melting point alloy wire 1 is covered with plastic, it is considered that even if the low melting point alloy wire 1 is melted, it will not be broken. So low melting point alloy wire 1
A disc-shaped support member 15 was intermittently provided directly on the outer periphery of the. This makes it possible to insert the spacer into the groove of the spacer and to ensure the breakage of the low melting point alloy wire.
［発明の効果］ 低融点合金線の外周上に直接ディスク型支持部材を間
歇的に設けた異常温度検知線をスペーサの溝に挿入して
いるため、ケーブル外径を大きくすることなく温度検知
が可能となる。[Advantages of the Invention] Since the abnormal temperature detection wire in which the disc type supporting member is intermittently provided directly on the outer periphery of the low melting point alloy wire is inserted into the groove of the spacer, the temperature can be detected without increasing the outer diameter of the cable. It will be possible.
また、低融点合金線自体が検知機能を持っているた
め、ケーブル長手方向に一様に検知可能となった。Moreover, since the low melting point alloy wire itself has a detection function, it can be detected uniformly in the longitudinal direction of the cable.
さらに、低融点合金線の外周上に直接ディスク型支持
部材を間歇的に設けたことにより、破断が確実に起こる
ようにできる。Further, by intermittently providing the disk-shaped support member directly on the outer periphery of the low melting point alloy wire, the breakage can be surely caused.
第１図はこの発明のスペーサ型光ファイバケーブルの実
施例を示す断面図、第２図は本発明に用いるスペーサを
示す断面図、第３図は低融点合金線の外周上にディスク
型支持部材を間歇的に設けた異常温度検知線を示す斜視
図である。 1:低融点合金線 2:光ファイバ 3:スペーサ 4:押え巻テープ 5:シース 6:テンションメンバ 15:支持部材FIG. 1 is a sectional view showing an embodiment of a spacer type optical fiber cable of the present invention, FIG. 2 is a sectional view showing a spacer used in the present invention, and FIG. 3 is a disc type supporting member on the outer periphery of a low melting point alloy wire. It is a perspective view which shows the abnormal temperature detection line which provided intermittently. 1: Low melting point alloy wire 2: Optical fiber 3: Spacer 4: Holding tape 5: Sheath 6: Tension member 15: Support member
Claims (1)
うち少くともひとつを空溝とし、他の溝のうち少くとも
ひとつに光ファイバを収容し、前記スペーサの外側に押
え巻テープ、シースを順次施してなるスペーサ型光ファ
イバケーブルにおいて、 低融点合金線の外周上に直接ディスク型支持部材を間歇
的に設けた異常温度検知線を前記スペーサの空溝に収容
したことを特徴とするスペーサ型光ファイバケーブル。1. A spacer is provided with a plurality of grooves on the outer circumference thereof, at least one of the grooves is an empty groove, and an optical fiber is accommodated in at least one of the other grooves, and a holding tape is provided outside the spacer. In a spacer type optical fiber cable in which a sheath is sequentially provided, an abnormal temperature detection line in which a disc type supporting member is intermittently provided directly on the outer periphery of a low melting point alloy wire is housed in a groove of the spacer. Spacer type optical fiber cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2175897A JP2508372B2 (en) | 1990-07-03 | 1990-07-03 | Spacer type optical fiber cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2175897A JP2508372B2 (en) | 1990-07-03 | 1990-07-03 | Spacer type optical fiber cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0465029A JPH0465029A (en) | 1992-03-02 |
| JP2508372B2 true JP2508372B2 (en) | 1996-06-19 |
Family
ID=16004144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2175897A Expired - Lifetime JP2508372B2 (en) | 1990-07-03 | 1990-07-03 | Spacer type optical fiber cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2508372B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100228046B1 (en) * | 1997-03-19 | 1999-11-01 | 정명세 | High temperature platinum resistance thermometer |
| CN211699808U (en) * | 2020-05-11 | 2020-10-16 | 江苏中利集团股份有限公司 | Temperature-sensing fire detection cable |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52128034U (en) * | 1976-03-26 | 1977-09-29 | ||
| JPH0330951Y2 (en) * | 1981-03-30 | 1991-06-28 | ||
| JPS6451224U (en) * | 1987-09-24 | 1989-03-29 |
-
1990
- 1990-07-03 JP JP2175897A patent/JP2508372B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0465029A (en) | 1992-03-02 |
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