JPH0371515A - Coaxial cable - Google Patents
Coaxial cableInfo
- Publication number
- JPH0371515A JPH0371515A JP1206909A JP20690989A JPH0371515A JP H0371515 A JPH0371515 A JP H0371515A JP 1206909 A JP1206909 A JP 1206909A JP 20690989 A JP20690989 A JP 20690989A JP H0371515 A JPH0371515 A JP H0371515A
- Authority
- JP
- Japan
- Prior art keywords
- polyimide
- conductor
- insulating layer
- sheath conductor
- coating layer
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 35
- 239000010410 layer Substances 0.000 claims abstract description 23
- 229920001721 polyimide Polymers 0.000 claims abstract description 20
- 239000004642 Polyimide Substances 0.000 claims abstract description 14
- 239000011247 coating layer Substances 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 229920003002 synthetic resin Polymers 0.000 abstract description 5
- 239000000057 synthetic resin Substances 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 4
- 239000010949 copper Substances 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract description 4
- 239000010409 thin film Substances 0.000 abstract description 2
- 230000002285 radioactive effect Effects 0.000 abstract 2
- 230000005855 radiation Effects 0.000 description 8
- 239000009719 polyimide resin Substances 0.000 description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 125000001841 imino group Chemical group [H]N=* 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
Landscapes
- Insulated Conductors (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明はたとえば液体金属冷却型高速増殖炉の原子炉容
器内の探査などの監視システムに使用される耐放射性高
温用同軸ケーブルに関する。[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention relates to a radiation-resistant high-temperature coaxial system used in a monitoring system such as the exploration of the inside of a reactor vessel of a liquid metal cooled fast breeder reactor. Regarding cables.
（従来の技術）
液体ナトリウムなどの液体金属を冷却材に使用する高速
増殖炉では高温または高放射線の環境下に曝されるため
、原子炉容器内の探査を行う監視システムに使用される
同軸ケーブルは第３図に示したように無機絶縁ケーブル
つまりＭ Ｉ （Ｍｉｎｅ「ａｌＩｎｓｕｌａｔｉｏｎ
）ケーブルが使用されている。(Prior technology) Fast breeder reactors that use liquid metal such as liquid sodium as a coolant are exposed to high temperature or high radiation environments, so coaxial cables are used in monitoring systems to explore the inside of the reactor vessel. As shown in Figure 3, the inorganic insulated cable, ie, M
) cable is used.
すなわち、Ｍｌケーブルは銅製単線からなる中心導体１
と、この中心導体１の周囲に無機絶縁物として酸化マグ
ネシウム（ＭｇＯ）などの粉末で満たされた絶縁層２と
、この絶縁層２を包囲した銅製チューブのシース導体３
とから構成されている。In other words, the Ml cable has a central conductor 1 made of a single copper wire.
Around this central conductor 1, there is an insulating layer 2 filled with powder such as magnesium oxide (MgO) as an inorganic insulator, and a sheath conductor 3 made of a copper tube surrounding this insulating layer 2.
It is composed of.
（発明が解決しようとする課題）
従来のＭＩケーブルは上述したように無機絶縁物の粉末
と金属シースとから構成されているため耐放射線性にす
ぐれ、高温での電気的２機械的特性も安定している。(Problem to be solved by the invention) As mentioned above, conventional MI cables are composed of inorganic insulating powder and a metal sheath, so they have excellent radiation resistance and stable electrical and mechanical properties at high temperatures. are doing.
しかしながら、柔軟性および耐久性については十分とは
いえず、特に原子炉容器内に据え付けられた駆動機器な
どの中に配線した場合、繰り返しの曲げ応力に対しては
耐久性が十分でない課題がある。However, flexibility and durability are not sufficient, especially when wiring is installed in drive equipment installed inside the reactor vessel. .
また、製造時に一体で引き延ばし加工を必要とするため
、原子炉容器内という狭い領域で使用するために不可欠
なケーブルの小型化つまり、細線化が困難であり、特に
多芯化することはほとんど不可能な課題がある。In addition, since the cable must be stretched in one piece during manufacturing, it is difficult to make the cable smaller and thinner, which is essential for use in the narrow area inside the reactor vessel, and it is almost impossible to make it multi-core. There are possible challenges.
本発明は上記課題を解決するためになされたもので、耐
放射線性、耐熱性にすぐれ、機械的な繰り返し応力に対
する耐久性が良好で、実装密度の高い同軸ケーブルを提
供することにある。The present invention has been made to solve the above problems, and an object of the present invention is to provide a coaxial cable that has excellent radiation resistance and heat resistance, good durability against repeated mechanical stress, and high packaging density.
［発明の構成］
（課題を解決するための手段）
本発明は中心導体と、この中心導体の周囲に密着された
ポリイミド系の樹脂絶縁層と、この樹脂絶縁層の周囲に
設けられたシース導体と、このシース導体の周囲に設け
られたポリイミド系の樹脂被覆層とからなることを特徴
とする。[Structure of the Invention] (Means for Solving the Problems) The present invention comprises a central conductor, a polyimide resin insulating layer closely adhered around the central conductor, and a sheath conductor provided around the resin insulating layer. and a polyimide-based resin coating layer provided around the sheath conductor.
（作 用）
樹脂絶縁層および樹脂被覆層として使用するポリイミド
系合成樹脂は１０７ラド（ｒａｄ）以上でも放射線に耐
え、また３００℃から４００℃の温度に耐え、かつ連続
使用にも耐え得る性質を有しているだけでなく、加工性
１機械的な強度および柔軟性に富んでいる。(Function) The polyimide-based synthetic resin used as the resin insulation layer and the resin coating layer has properties that can withstand radiation of 107 rad or more, withstand temperatures of 300°C to 400°C, and can withstand continuous use. It not only has excellent processability, mechanical strength and flexibility.
なお、イミドはイミノとも称され、２価の置換基−ＮＨ
，同一炭素原子と二重結合で結合している場合＞Ｃ＝Ｎ
Ｈと、２個の別々の炭素原子と結合している場合Ｃ−Ｎ
Ｈ−Ｃとがあり、ポリイミドはこれらが多数結合した有
機合成化合物の樹脂を指している。In addition, imide is also called imino, and has a divalent substituent -NH
, when bonded to the same carbon atom with a double bond>C=N
H and C-N when bonded to two separate carbon atoms
There are H-C, and polyimide refers to a resin of an organic synthetic compound in which a large number of these are bonded together.
また、シース導体を樹脂絶縁層の表面に金属蒸着または
金属薄膜テープを密着させて巻回させ、さらにこのシー
ス導体の表面に樹脂被覆層を設けることによってシース
導体を安定して固定できる。Further, the sheath conductor can be stably fixed by winding the sheath conductor with metal vapor deposition or metal thin film tape closely attached to the surface of the resin insulating layer, and further providing a resin coating layer on the surface of the sheath conductor.
このようにして同軸ケーブルの外径を小型化でき、実装
密度を高め、柔軟性を付与することができる。In this way, the outer diameter of the coaxial cable can be reduced, the packaging density can be increased, and flexibility can be imparted.
（実施例）
第１図を参照しながら本発明に係る同軸ケーブルの１の
実施例を説明する。(Embodiment) One embodiment of the coaxial cable according to the present invention will be described with reference to FIG.
第１図において、符号４は中心導体で、この中心導体４
は銅などの良好な導電性を有する単線または多線の金属
線からなっている。この中心導体４の周囲にはポリイミ
ド系の樹脂絶縁層５が密着されている。このポリイミド
系の合成樹脂は耐放射線性が１０７ラド以上、耐熱性３
００〜４００℃以上の性能を有している。In FIG. 1, reference numeral 4 is the center conductor, and this center conductor
consists of a single or multi-wire metal wire with good electrical conductivity, such as copper. A polyimide resin insulating layer 5 is tightly adhered around the center conductor 4. This polyimide-based synthetic resin has a radiation resistance of 107 rad or more and a heat resistance of 3.
It has performance of 00 to 400°C or higher.
ポリイミド系の樹脂絶縁層５の周囲にはシース導体６が
設けられている。このシース導体６は銅などの金属を蒸
着するかまたは金属の薄膜テープを巻回した金属層であ
る。シース導体６の周囲にはポリイミド系の樹脂被覆層
７が設けられている。A sheath conductor 6 is provided around the polyimide resin insulating layer 5. The sheath conductor 6 is a metal layer on which a metal such as copper is deposited or a thin metal film tape is wound around it. A polyimide resin coating layer 7 is provided around the sheath conductor 6.
この樹脂被覆層７はシース導体６を固定し、また外部か
ら電気的に絶縁し、機械的に保護するためのものである
。This resin coating layer 7 is for fixing the sheath conductor 6, electrically insulating it from the outside, and mechanically protecting it.
以上のように構成された同軸ケーブルはポリイミド系の
樹脂絶縁層５と樹脂被覆層７を有しているため、ポリイ
ミド系樹脂自体が適度な柔軟性と弾性を有し、機械的な
繰り返しの応力に対して中心導体４およびシース導体６
を保護することができ、耐久性を向上させることができ
る。Since the coaxial cable configured as described above has a polyimide-based resin insulation layer 5 and a resin coating layer 7, the polyimide-based resin itself has appropriate flexibility and elasticity, and can withstand repeated mechanical stress. against the center conductor 4 and sheath conductor 6
can be protected and durability can be improved.
第２図は本発明の第２の実施例を示したもので、この実
施例は第１の実施例で構成した同軸ケーブルを横列状態
で連結してフラットケーブル状に構成したことにある。FIG. 2 shows a second embodiment of the present invention, in which the coaxial cables constructed in the first embodiment are connected in rows to form a flat cable.
すなわち、中心導体４の周囲にポリイミド系の樹脂絶縁
層５が密着され、この樹脂絶縁層５の外周にシース導体
６が設けられ、シース導体６の外周囲にポリイミド系の
樹脂被覆層７から構成された同軸ケーブルを同一平面状
に配置し各樹脂被覆層７間に連結部８を有して結合しフ
ラットケーブルに形成したことにある。この実施例によ
れば被覆層７を一体で成形することによって機械的な強
度を確保することができる。That is, a polyimide resin insulating layer 5 is tightly adhered around the center conductor 4, a sheath conductor 6 is provided around the outer periphery of the resin insulating layer 5, and a polyimide resin coating layer 7 is provided around the outer periphery of the sheath conductor 6. The coaxial cables are arranged on the same plane and connected by connecting portions 8 between each resin coating layer 7 to form a flat cable. According to this embodiment, mechanical strength can be ensured by integrally molding the covering layer 7.
［発明の効果コ
本発明によれば耐放射線性、耐熱性のみならず、柔軟性
および加工性に優れ、また適度な弾性を有するポリイミ
ド系合成樹脂を絶縁層および被覆層として用いることに
よって小形で実装密度の高い耐久性に優れた耐放射線高
温用同軸ケーブルを提供することができる。[Effects of the Invention] According to the present invention, a polyimide synthetic resin having not only radiation resistance and heat resistance, but also excellent flexibility and processability, and appropriate elasticity is used as an insulating layer and a covering layer. It is possible to provide a radiation-resistant high-temperature coaxial cable with high packaging density and excellent durability.
第１図は本発明に係る同軸ケーブルの第１の実施例を示
す横断面図、第２図は同じく本発明の第２の実施例を示
す横断面図、第３図は従来の同軸ケーブルを示す横断面
図である。
１・・・中心導体
２・・・絶縁層
３・・・シース導体
４・・・中心導体
６・・・樹脂絶縁層
６・・・シース導体
７・・・樹脂被覆層
８・・・連結部FIG. 1 is a cross-sectional view showing a first embodiment of a coaxial cable according to the present invention, FIG. 2 is a cross-sectional view showing a second embodiment of the present invention, and FIG. 3 is a cross-sectional view of a conventional coaxial cable. FIG. 1... Center conductor 2... Insulating layer 3... Sheath conductor 4... Center conductor 6... Resin insulating layer 6... Sheath conductor 7... Resin coating layer 8... Connection portion
Claims (1)
ド系の樹脂絶縁層と、この樹脂絶縁層の周囲に設けられ
たシース導体と、このシース導体の周囲に設けられたポ
リイミド系の樹脂被覆層とからなることを特徴とする同
軸ケーブル。A center conductor, a polyimide-based resin insulating layer tightly attached around this center conductor, a sheath conductor provided around this resin insulating layer, and a polyimide-based resin coating layer provided around this sheath conductor. A coaxial cable characterized by consisting of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1206909A JPH0371515A (en) | 1989-08-11 | 1989-08-11 | Coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1206909A JPH0371515A (en) | 1989-08-11 | 1989-08-11 | Coaxial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0371515A true JPH0371515A (en) | 1991-03-27 |
Family
ID=16531084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1206909A Pending JPH0371515A (en) | 1989-08-11 | 1989-08-11 | Coaxial cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0371515A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007146247A (en) * | 2005-11-29 | 2007-06-14 | Hitachi Cable Ltd | Composite material made from metal and resin, production method therefor and product using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57103209A (en) * | 1980-10-27 | 1982-06-26 | Cise Spa | Non-impregnating single-conductor or plural-conductor cable used in corrosive environment at high temperature |
| JPS57168410A (en) * | 1981-04-10 | 1982-10-16 | Japan Atomic Energy Res Inst | Radiation resistant and heat resistant cable |
| JPS605014B2 (en) * | 1980-11-20 | 1985-02-07 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | diagnostic system |
-
1989
- 1989-08-11 JP JP1206909A patent/JPH0371515A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57103209A (en) * | 1980-10-27 | 1982-06-26 | Cise Spa | Non-impregnating single-conductor or plural-conductor cable used in corrosive environment at high temperature |
| JPS605014B2 (en) * | 1980-11-20 | 1985-02-07 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | diagnostic system |
| JPS57168410A (en) * | 1981-04-10 | 1982-10-16 | Japan Atomic Energy Res Inst | Radiation resistant and heat resistant cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007146247A (en) * | 2005-11-29 | 2007-06-14 | Hitachi Cable Ltd | Composite material made from metal and resin, production method therefor and product using the same |
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