JPS637409B2 - - Google Patents
Info
- Publication number
- JPS637409B2 JPS637409B2 JP55144584A JP14458480A JPS637409B2 JP S637409 B2 JPS637409 B2 JP S637409B2 JP 55144584 A JP55144584 A JP 55144584A JP 14458480 A JP14458480 A JP 14458480A JP S637409 B2 JPS637409 B2 JP S637409B2
- Authority
- JP
- Japan
- Prior art keywords
- watertight
- conductor
- mixture
- cable
- hydroxyl group
- 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
- 239000004020 conductor Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 claims description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- KIQKWYUGPPFMBV-UHFFFAOYSA-N diisocyanatomethane Chemical compound O=C=NCN=C=O KIQKWYUGPPFMBV-UHFFFAOYSA-N 0.000 claims description 4
- 238000004132 cross linking Methods 0.000 description 5
- 229920001451 polypropylene glycol Polymers 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 230000008733 trauma Effects 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
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
- Manufacturing Of Electric Cables (AREA)
Description
本発明は水密性導体を有する電力ケーブルに関
する。
従来海底ケーブルには、水密性導体を有する電
力ケーブルが使用されているが、これは事故時の
ケーブル外傷から侵入する水により起るケーブル
の損傷を低減させるためである。
この種のケーブルの製造においては、撚線工程
中素線上にウレタン混和物、ポリブテン混和物等
からなる水密混和物を塗布するか、または素線を
水密性混和物槽中に通過させながら、撚り合せる
という方法がとられていた。
しかしながら、この従来の方法は撚線工程にお
ける線速に限界があり、撚線機を高速運転すると
水密混和物の充填が不完全となり、ケーブルとし
ての水密性が確保できないため止むを得ず低速運
転によつて製造されていた。
本発明者らは、かかる不都合を取り除くべく鋭
意検討した結果、全く新しい方法によつて水密性
構造のケーブルを得ることに成功し、本発明を完
成した。
本発明は、分子中に水酸基を有する液状クロロ
プレンとメチレンジイソシアネートとを含有する
水密混和物を撚線導体の空隙に充填したことを特
徴とする電力ケーブルとその製造方法に関するも
のである。
本発明に用いる水密混和物は、水酸基を有する
液状クロロプレンとメチレンジイソシアネートを
必須成分とし、ポリプロピレングリコール
（PPG）のほか必要に応じて充填剤、軟化剤、老
化防止剤等の添加剤を配合した液状物であつて、
従来の水密混和物よりもはるかにすぐれた耐熱性
を示すもので、液状クロロプレンとPPGとの比
率が100/0〜20/80の場合、好適な水密特性が得ら
れる。本発明はこのような水密混和物を撚線工程
中に導体に充填する従来方法とは異なり、できあ
がつた通常の撚線導体に対し前記水密混和物を充
填するのである。
この場合の充填装置は図に示すように、充填筒
１と水密混和物の貯槽２からなり、貯槽２は図示
していない加圧装置と管３で結合している。
撚線導体４は矢印方向から充填筒１内に送入さ
れ、筒内を通過する間に貯槽２内の水密混和物５
が管３からくる加圧ガスによつて充填筒１に圧入
され、撚線外周から撚線空隙内に充填される。充
填された撚線導体が充填筒から出ると同時にこれ
にゴム引きのナイロンや木綿製のテープ６が巻き
つけられる。さらにこの上に内部半導電層、ポリ
エチレン絶縁体層が押出被覆され、引続き連続架
橋装置に送られ、そこで加熱架橋される。本発明
の方法によると液状クロロプレンはその水酸基と
イソシアネートが反応して耐熱性の水密導体を形
成するので、従来より高い線速でケーブルを製造
することができ、製造効率を上げることができ
る。
以下実施例によつて説明する。
素線径2.6mm、導体断面積400mm2の撚線導体に前
記装置を使用して下記組成の水密混和物を導体外
周から加圧充填し、水密性導体とした後、この上
に内部半導電層、ポリエチレン絶縁体層をそれぞ
れ１mm厚、４mm厚に押出被覆し、引続き連続架橋
装置（架橋温度250〜300℃）によつてケーブルを
製造した。
The present invention relates to power cables with watertight conductors. Conventionally, power cables with watertight conductors have been used in submarine cables in order to reduce damage to the cables caused by water entering through cable trauma in the event of an accident. In the production of this type of cable, a watertight mixture such as a urethane mixture, a polybutene mixture, etc. is applied to the strands during the stranding process, or the strands are twisted while passing through a watertight mixture bath. The method of matching was taken. However, this conventional method has a limit to the wire speed in the wire twisting process, and if the wire twisting machine is operated at high speed, filling of the watertight mixture will be incomplete, making it impossible to ensure the watertightness of the cable, so low speed operation is unavoidable. It was manufactured by. As a result of intensive studies aimed at eliminating such disadvantages, the present inventors succeeded in obtaining a cable with a watertight structure using a completely new method, and completed the present invention. The present invention relates to a power cable characterized in that the voids of a stranded wire conductor are filled with a watertight mixture containing liquid chloroprene having a hydroxyl group in the molecule and methylene diisocyanate, and a method for manufacturing the same. The watertight mixture used in the present invention is a liquid mixture containing liquid chloroprene having a hydroxyl group and methylene diisocyanate as essential components, and containing additives such as fillers, softeners, anti-aging agents, etc. in addition to polypropylene glycol (PPG) as necessary. It is a thing,
It exhibits much better heat resistance than conventional water-tight mixtures, and suitable water-tight properties are obtained when the ratio of liquid chloroprene to PPG is 100/0 to 20/80. The present invention differs from conventional methods in which conductors are filled with such watertight admixtures during the stranding process, in that the watertight admixture is filled into the resulting conventional stranded conductor. As shown in the figure, the filling device in this case consists of a filling cylinder 1 and a watertight mixture storage tank 2, and the storage tank 2 is connected to a pressurizing device (not shown) through a pipe 3. The stranded wire conductor 4 is fed into the filling cylinder 1 from the direction of the arrow, and the watertight mixture 5 in the storage tank 2 passes through the cylinder.
is forced into the filling cylinder 1 by pressurized gas coming from the tube 3, and the stranded wire gap is filled from the outer periphery of the stranded wire. As soon as the filled stranded wire conductor comes out of the filling tube, a rubberized nylon or cotton tape 6 is wrapped around it. Furthermore, an internal semiconducting layer, a polyethylene insulating layer, is extrusion coated onto this and subsequently sent to a continuous crosslinking unit where it is thermally crosslinked. According to the method of the present invention, liquid chloroprene reacts with its hydroxyl group and isocyanate to form a heat-resistant watertight conductor, so cables can be manufactured at a higher wire speed than conventional cables, and manufacturing efficiency can be increased. This will be explained below using examples. A stranded wire conductor with a wire diameter of 2.6 mm and a conductor cross-sectional area of 400 mm 2 is pressurized with a watertight mixture having the following composition from the outer periphery of the conductor using the above device to make a watertight conductor. The cable was coated by extrusion with a polyethylene insulator layer and a polyethylene insulating layer to a thickness of 1 mm and 4 mm, respectively, and then a cable was produced using a continuous crosslinking device (crosslinking temperature 250-300° C.).
【表】【table】
【表】
製造したケーブルから1m長の試料をとり、そ
の一端から６Kg／cm2の水圧を24時間加えたあとの
他端からの水もれの有無をしらべる、耐水密性試
験を行つたところ、Ａ、Ｂ、Ｃを用いたものは
300℃の架橋温度の熱履歴を受けても全く変化す
ることなく良好で完全な耐水密性を示し、Ｄは
250℃の架橋温度で良好で同様の耐水密性を示し
たが、Ｅは混和物が250℃で熱劣化し、耐水密性
が不良であり、海底ケーブルには不適当である。
Ａ、Ｂ、Ｃ、Ｄの結果から実際上不都合のない耐
熱特性はLCGとPPGの比率が100/0〜20/80の範
囲のときに得られると推定された。[Table] A 1m long sample was taken from the manufactured cable, and a watertightness test was conducted in which water pressure of 6 kg/cm 2 was applied from one end for 24 hours to check for water leakage from the other end. , A, B, and C are used.
Even after undergoing thermal history at a crosslinking temperature of 300℃, it shows no change at all and exhibits good and complete watertightness, and D is
Although it showed good watertightness at a crosslinking temperature of 250°C, E had poor watertightness due to heat deterioration of the mixture at 250°C, making it unsuitable for submarine cables.
From the results of A, B, C, and D, it was estimated that practically acceptable heat resistance properties could be obtained when the ratio of LCG to PPG was in the range of 100/0 to 20/80.
第１図は本発明による電力ケーブルの製造に使
用する装置の断面説明図である。
１……充填筒、２……貯槽、３……管、４……
撚線導体、５……水密混和物、６……テープ。
FIG. 1 is an explanatory cross-sectional view of an apparatus used for manufacturing a power cable according to the present invention. 1...Filling cylinder, 2...Storage tank, 3...Pipe, 4...
Stranded wire conductor, 5... Watertight mixture, 6... Tape.
Claims (1)
メチレンジイソシアネートとを含有する水密混和
物を撚線導体の空隙に充填したことを特徴とする
水密性導体を有する電力ケーブル。 ２ 分子中に水酸基を有する液状クロロプレンと
メチレンジイソシアネートとを含有する水密混和
物を撚線導体の外周より加圧充填して水密性導体
を得ることを特徴とする水密性導体を有する電力
ケーブルの製造方法。[Scope of Claims] 1. A power cable having a watertight conductor, characterized in that the voids of the stranded wire conductor are filled with a watertight mixture containing liquid chloroprene having a hydroxyl group in the molecule and methylene diisocyanate. 2. Production of a power cable having a watertight conductor, characterized in that the watertight conductor is obtained by filling a watertight mixture containing liquid chloroprene and methylene diisocyanate having a hydroxyl group in the molecule from the outer periphery of the stranded conductor under pressure. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55144584A JPS5769614A (en) | 1980-10-16 | 1980-10-16 | Power cable with watertight conductor and method of producing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55144584A JPS5769614A (en) | 1980-10-16 | 1980-10-16 | Power cable with watertight conductor and method of producing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5769614A JPS5769614A (en) | 1982-04-28 |
| JPS637409B2 true JPS637409B2 (en) | 1988-02-16 |
Family
ID=15365508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55144584A Granted JPS5769614A (en) | 1980-10-16 | 1980-10-16 | Power cable with watertight conductor and method of producing same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5769614A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04118922U (en) * | 1991-04-04 | 1992-10-23 | 本田技研工業株式会社 | spline broach tool |
| KR20230052853A (en) * | 2021-10-13 | 2023-04-20 | 한국세라믹기술원 | Performance test device for filter-type photocatalyst sample |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6407035B2 (en) * | 2015-01-13 | 2018-10-17 | 三菱重工業株式会社 | Bulkhead cable unit and cable penetration part |
-
1980
- 1980-10-16 JP JP55144584A patent/JPS5769614A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04118922U (en) * | 1991-04-04 | 1992-10-23 | 本田技研工業株式会社 | spline broach tool |
| KR20230052853A (en) * | 2021-10-13 | 2023-04-20 | 한국세라믹기술원 | Performance test device for filter-type photocatalyst sample |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5769614A (en) | 1982-04-28 |
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