JPH07335039A - High voltage refractory cable with shield - Google Patents
High voltage refractory cable with shieldInfo
- Publication number
- JPH07335039A JPH07335039A JP6131779A JP13177994A JPH07335039A JP H07335039 A JPH07335039 A JP H07335039A JP 6131779 A JP6131779 A JP 6131779A JP 13177994 A JP13177994 A JP 13177994A JP H07335039 A JPH07335039 A JP H07335039A
- Authority
- JP
- Japan
- Prior art keywords
- shield member
- layer
- wound
- shield
- conductor
- 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
- Insulated Conductors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、大型耐火炉に対応でき
るようなシールド付高電圧耐火ケーブルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shielded high-voltage refractory cable which can be applied to a large-scale refractory furnace.
【０００２】[0002]
【従来の技術】従来のシールド付高電圧耐火ケーブル
は、導体上に耐火層、絶縁層を順次施して構成した絶縁
線心の上に、半導電性テープを層状に巻回し、さらにそ
の上に銅テープによるシールド部材を施していた。2. Description of the Related Art A conventional shielded high-voltage fireproof cable has a semiconductive tape wound in layers on an insulating wire core which is formed by sequentially applying a fireproof layer and an insulating layer on a conductor, and further on that. It was shielded with copper tape.
【０００３】[0003]
【発明が解決しようとする課題】上記の従来のシールド
付高電圧耐火ケーブルでは、火災に遭遇し特に１時間以
上高温に曝されると、絶縁層は完全に焼失し、耐火層を
介するにしても導体とシールド部材とが接触し短絡する
可能性が大きかった。In the above-mentioned conventional shielded high-voltage fireproof cable, when a fire is encountered and exposed to a high temperature for more than one hour, the insulating layer is completely burned down, and the insulation layer is liable to be lost. Also, there was a high possibility that the conductor and the shield member would come into contact with each other to cause a short circuit.
【０００４】そこで、本発明の目的は、上記の従来技術
の欠点であった、導体とシールド部材との接触の可能性
を極力少なくし、短絡を防ぐことができる、シールド付
高電圧耐火ケーブルを提供することにある。Therefore, an object of the present invention is to provide a shielded high-voltage fireproof cable which is a drawback of the above-mentioned prior art and which can minimize the possibility of contact between the conductor and the shield member and prevent a short circuit. To provide.
【０００５】[0005]
【課題を解決するための手段・作用】上記の目的を達成
するためになされた本発明のシールド付高電圧耐火ケー
ブルは、導体上に耐火層、絶縁層を順次施した絶縁線心
上に、半導電層、シールド部材、シースを順次施してな
り、シールド部材は、テープ状にして半導電層の中に螺
旋状に埋設された第一のシールド部材と、テープまたは
線条体にして半導電層上に巻装された第二のシールド部
材とからなり、第一のシールド部材と第二のシールド部
材は、各々形状記憶合金からなっていてお互いに反対向
きの巻回形状を記憶するように形成されており、第一の
シールド部材は記憶した巻回形状と逆の方向に巻回さ
れ、第二のシールド部材は記憶した巻回形状と同一の方
向に巻回されたことを特徴とする。The shielded high-voltage fireproof cable of the present invention made in order to achieve the above-mentioned object is a conductor having a fireproof layer and an insulating layer formed on an insulated wire core. A semi-conductive layer, a shield member, and a sheath are sequentially applied, and the shield member is a tape-shaped first shield member that is spirally embedded in the semi-conductive layer and a tape or filament that is semi-conductive. A second shield member wound on the layer, wherein the first shield member and the second shield member are respectively made of a shape memory alloy so as to memorize the winding shapes opposite to each other. The first shield member is wound in a direction opposite to the stored winding shape, and the second shield member is wound in the same direction as the stored winding shape. .
【０００６】そのような特徴からなるシールド付高電圧
耐火ケーブルによれば、火災に遭遇した際の高熱で、第
一のシールド部材は反り返り、一方の第二のシールド部
材は収縮する方向に力を発生し、その結果として、第一
のシールド部材がケーブルの長手方向に突き出すように
なる。燃焼していない部分の第一のシールドは、半導電
層に埋設されているため、かかる突き出す力が導体の引
張り力となり、導体を中位空間に保持し、導体に対する
シールド部材の接触を防ぐように作用する。According to the shielded high-voltage fireproof cable having such characteristics, the first shield member warps due to the high heat at the time of encountering a fire, and the second shield member on one side exerts a force in a contracting direction. Occurs, and as a result, the first shield member projects in the longitudinal direction of the cable. Since the first shield in the non-burning part is embedded in the semi-conductive layer, the projecting force acts as a tensile force for the conductor, holds the conductor in the middle space, and prevents the shield member from contacting the conductor. Act on.
【０００７】好ましい態様として、第一のシールド部材
は細幅にして開放螺旋状に巻回され、第二のシールド部
材は広幅にして閉鎖螺旋状に巻回されたものである。そ
うすることで、第二のシールド部材が第一シールド部材
をその反発力以上の力で押さえ込み、第一シールド部材
の復元力を長手方向の伸張力に変えるのを確実にするこ
とができる。In a preferred embodiment, the first shield member is narrow and wound in an open spiral shape, and the second shield member is wide and wound in a closed spiral shape. By doing so, it is possible to ensure that the second shield member holds down the first shield member with a force equal to or greater than the repulsive force thereof and changes the restoring force of the first shield member into the extension force in the longitudinal direction.
【０００８】[0008]
【実施例】図１は、本発明のシールド付高電圧耐火ケー
ブルの好ましい一実施例を示したもので、符号中１４は
絶縁線心にして、導体１上に耐火層２と絶縁層３を順次
施して構成されている。５は半導電層、６はシールド部
材、７はセパレータテープ、８はシースである。FIG. 1 shows a preferred embodiment of the shielded high-voltage fireproof cable of the present invention, in which reference numeral 14 is an insulating wire core, and the fireproof layer 2 and the insulating layer 3 are provided on the conductor 1. It is configured by applying sequentially. Reference numeral 5 is a semiconductive layer, 6 is a shield member, 7 is a separator tape, and 8 is a sheath.
【０００９】しかして、シールド部材６は、半導電層５
の中において細幅テープ状にして開放螺旋状に埋設され
た第一のシールド部材６１と、半導電層５上において広
幅テープ状にして閉鎖螺旋状に巻装された第二のシール
ド部材６２とからなっており、それら何れのシールド部
材６１，６２においても形状記憶合金により自己の巻回
形状を記憶するように形成されたものである。Therefore, the shield member 6 includes the semiconductive layer 5
A first shield member 61 which is embedded in an open spiral shape in the form of a narrow tape, and a second shield member 62 which is wound in a closed spiral shape in a wide tape shape on the semiconductive layer 5. Each of the shield members 61 and 62 is formed of a shape memory alloy so as to memorize its own winding shape.
【００１０】第一のシールド部材６１は、図面上Ｓ巻の
巻回形状を記憶させたもので、その記憶形状とは逆の方
向にして巻回されている。一方の第二のシールド部材６
２は、図面上Ｚ巻の巻回形状を記憶させたもので、その
記憶形状と同一の方向にして巻回されている。The first shield member 61 memorizes the winding shape of S winding in the drawing, and is wound in the direction opposite to the memorized shape. One second shield member 6
In FIG. 2, the winding shape of the Z winding is memorized in the drawing, and the winding shape is wound in the same direction as the memorized shape.
【００１１】上記のようにしてなる本実施例のシールド
付高電圧耐火ケーブルによれば、火災時の高熱に曝され
た場合には、第一のシールド部材６１は反り返り、第二
のシールド部材６２は収縮する方向の力を発生し、ひい
ては、第一のシールドテープ６１が第二のシールドテー
プ６２に押さえ込まれながら自己の形状復元力で長手方
向への突き出すようになり、その突き出し力は半導電層
５の中で発生するので導体への引張り力となり、ひいて
は、導体１を中位空間に保持し、シールド部材と導体１
との接触が小さくなるように仕向けられるのである。According to the shielded high-voltage fireproof cable of the present embodiment constructed as described above, when exposed to high heat during a fire, the first shield member 61 bends back, and the second shield member 62. Generates a force in the direction of contraction, and as a result, the first shield tape 61 is pressed by the second shield tape 62 and protrudes in the longitudinal direction by its own shape restoring force. Since it is generated in the layer 5, it acts as a tensile force on the conductor, which in turn holds the conductor 1 in the intermediate space, and the shield member and the conductor 1
It is designed to reduce the contact with.
【００１２】なお、第二のシールド部材６２は、広幅の
テープ状としたが、それに限らず、線条体（ワイヤー）
にしてその多数本を半導電層の外周に巻き付けたものと
しても良い。Although the second shield member 62 has a wide tape shape, the present invention is not limited to this.
Alternatively, a large number of them may be wound around the outer periphery of the semiconductive layer.
【００１３】[0013]
【発明の効果】以上説明したような本発明のシールド付
高電圧耐火ケーブルによれば、火災に遭遇して絶縁層が
焼失したとしても、第一のシールド部材と第二のシール
ド部材の形状記憶効果により、導体をシールド部材の取
り巻きの内部中央に保持することができ、もって、導体
とシール部材との接触が少なくできたものである。従っ
て、１時間を越える火災に際しても、短絡せずに非常電
源として機能することが可能で、貴重な人命、財産の逸
失を防ぐことができ、経済的に大きな効果が得られる。According to the shielded high-voltage fireproof cable of the present invention as described above, the shape memory of the first shield member and the second shield member is maintained even if the insulating layer is burned down due to a fire. Due to the effect, the conductor can be held in the center of the inside of the surrounding of the shield member, so that the contact between the conductor and the seal member can be reduced. Therefore, even if the fire exceeds one hour, it can function as an emergency power source without short-circuiting, and it is possible to prevent the loss of precious human life and property, and it is possible to obtain a great economical effect.
【図１】本発明にかかるシールド付高電圧耐火ケーブル
の一実施例を示す斜視図。FIG. 1 is a perspective view showing an embodiment of a shielded high-voltage fireproof cable according to the present invention.
１ 導体 ２ 耐火層 ３ 絶縁層 ４ 絶縁線心 ５ 半導電層 ６ シールド部材 ６１ 第一のシールド部材 ６２ 第二のシールド部材 ８ シース DESCRIPTION OF SYMBOLS 1 conductor 2 fireproof layer 3 insulating layer 4 insulating wire core 5 semiconductive layer 6 shield member 61 first shield member 62 second shield member 8 sheath
Claims (2)
線心上に、半導電層、シールド部材、シースを順次施し
てなり、シールド部材は、テープ状にして半導電層の中
に螺旋状に埋設された第一のシールド部材と、テープま
たは線条体にして半導電層上に巻装された第二のシール
ド部材とからなり、第一のシールド部材と第二のシール
ド部材は、各々形状記憶合金からなっていてお互いに反
対向きの巻回形状を記憶するように形成されており、第
一のシールド部材は記憶した巻回形状と逆の方向に巻回
され、第二のシールド部材は記憶した巻回形状と同一の
方向に巻回されたことを特徴とするシールド付高電圧耐
火ケーブル。1. A semiconductive layer, a shield member, and a sheath are sequentially provided on an insulated wire core in which a fireproof layer and an insulating layer are sequentially provided on a conductor, and the shield member is formed into a tape in the semiconductive layer. A first shield member that is spirally embedded in the first shield member, and a second shield member that is wound on the semiconductive layer in the form of a tape or filament, and the first shield member and the second shield member. Each of which is made of a shape memory alloy and is formed so as to memorize the winding shape in the opposite direction to each other, and the first shield member is wound in a direction opposite to the memorized winding shape, The shielded high-voltage fireproof cable is characterized in that the shield member is wound in the same direction as the stored winding shape.
状に巻回され、第二のシールド部材は広幅にして閉鎖螺
旋状に巻回された、請求項１記載のシールド付高電圧耐
火ケーブル。2. The shielded high voltage according to claim 1, wherein the first shield member has a narrow width and is wound in an open spiral shape, and the second shield member is wide and wound in a closed spiral shape. Fireproof cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6131779A JPH07335039A (en) | 1994-06-14 | 1994-06-14 | High voltage refractory cable with shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6131779A JPH07335039A (en) | 1994-06-14 | 1994-06-14 | High voltage refractory cable with shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07335039A true JPH07335039A (en) | 1995-12-22 |
Family
ID=15065958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6131779A Pending JPH07335039A (en) | 1994-06-14 | 1994-06-14 | High voltage refractory cable with shield |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07335039A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7665300B2 (en) | 2005-03-11 | 2010-02-23 | Massachusetts Institute Of Technology | Thin, flexible actuator array to produce complex shapes and force distributions |
| CN107833679A (en) * | 2017-11-29 | 2018-03-23 | 浙江亘古电缆股份有限公司 | A kind of row for heat treatment department hangs cable |
| CN110911040A (en) * | 2019-12-25 | 2020-03-24 | 江苏江扬线缆有限公司 | Cable for new energy automobile and preparation method thereof |
-
1994
- 1994-06-14 JP JP6131779A patent/JPH07335039A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7665300B2 (en) | 2005-03-11 | 2010-02-23 | Massachusetts Institute Of Technology | Thin, flexible actuator array to produce complex shapes and force distributions |
| CN107833679A (en) * | 2017-11-29 | 2018-03-23 | 浙江亘古电缆股份有限公司 | A kind of row for heat treatment department hangs cable |
| CN107833679B (en) * | 2017-11-29 | 2023-10-27 | 浙江亘古电缆股份有限公司 | A hang cable in a row for thermal treatment workshop |
| CN110911040A (en) * | 2019-12-25 | 2020-03-24 | 江苏江扬线缆有限公司 | Cable for new energy automobile and preparation method thereof |
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