JPH0325806A - Coating type corrugated steel pipe armored cable - Google Patents
Coating type corrugated steel pipe armored cableInfo
- Publication number
- JPH0325806A JPH0325806A JP1156814A JP15681489A JPH0325806A JP H0325806 A JPH0325806 A JP H0325806A JP 1156814 A JP1156814 A JP 1156814A JP 15681489 A JP15681489 A JP 15681489A JP H0325806 A JPH0325806 A JP H0325806A
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- corrugated steel
- cable
- epoxy resin
- coating
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 36
- 239000010959 steel Substances 0.000 title claims abstract description 36
- 239000011248 coating agent Substances 0.000 title abstract description 6
- 238000000576 coating method Methods 0.000 title abstract description 6
- 239000003822 epoxy resin Substances 0.000 claims abstract description 15
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 15
- 239000000057 synthetic resin Substances 0.000 claims abstract 3
- 229920003002 synthetic resin Polymers 0.000 claims abstract 3
- 239000003973 paint Substances 0.000 claims description 36
- 238000004040 coloring Methods 0.000 claims description 4
- 239000000049 pigment Substances 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 abstract description 10
- 239000010410 layer Substances 0.000 abstract description 10
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000004850 liquid epoxy resins (LERs) Substances 0.000 abstract 2
- 239000010426 asphalt Substances 0.000 description 14
- 238000005260 corrosion Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010186 staining 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
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Insulated Conductors (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、塗装タイプ波付鋼管鎧装ケーブルに関する
．
［従来の技術］
従来、波付鋼管鎖装ケーブルでは、波付鋼管鎧装とその
上のシースの間にアスファルト系塗料，による防食層を
設けるようにしている．この防食層を設けることの目的
は、シースを透過する水分あるいはシース外傷等に起因
する浸水によってケーブルの波付鋼管鎧装である金属層
の腐食を低減させるためである．
この対策としては、多くの公知例が見られるが、基本的
にはアスファルト系塗料をベースに種々の材料を添加し
ている．（例えば、実公昭５０−４０８５１号公報参照
）
［発明が解決しようとする課題］
上述した従来技術，特にアスファルト系塗料をベースと
した防食層を波付鋼管鎧装の表面に施したものには、次
のような問題点がある．■波付鋼管鎧装に直に接するシ
ースがポリ塩化ビニル（ｐｖｃ）のケーブルの場合、ケ
ーブルのＰｖＣシース配合中の可塑剤がアスファルト系
塗料に移行し、したがってＰｖＣシースの硬化を来たし
、ひいてはケーブルのシースにクラックを招く場合があ
る．
■ケーブル端が下向きになるように布設されるような場
合、周囲温度が高くなると、端末部よりアスファルト系
塗料が流れ出し、この端末部を汚損し、本来絶縁性では
あるものの周囲の粉塵等を抱き込み、最終的に電気絶縁
性を失わせ、端末部で短絡を生じさせる虞れがある．こ
のアスファルトの溶け出し、流れ出しの対策としては、
ケーブル端末部を密封する等の種々の対策が施されるが
、このため事前・事後の処理に要する経済的損失は膨大
である．
■アスファルト系塗料による防食性能の一つの利点は金
属層との接着性にあるが、一方、この点は逆にケーブル
端末作業時の剥ぎ取りにくさとなり、特に、ケーブルの
金属層は第３種以上の接地工事が必要であり、端末作業
性を著しく損なうことになる．
＠さらに、従来の油性ペンキ系塗料のものでは乾燥が遅
く、水溶性塗料では油性塗料に比べ防錆効果が小さいも
のである．
この発明は、このような点に鑑みてなされたもので、上
記した従来技術の欠点を解消する塗装タイプの波付鋼管
鎧装ケーブルを提供することを目的とする．
［課題を解決するための手段および作用］この発明は、
アスファルト系塗料の代りに一液性エポキシ系樹脂を波
付鋼管鎧装に塗装することにある．この一液性エポキシ
系樹脂をベースとした塗料をケーブルの波付鋼管鎧装に
塗布することにより、ケーブル端末からの溶け出しおよ
び流れ出しを阻止し、さらに■この塗料をベースとした
導電塗料にすれば接地効果を変えずに、かつ、汚染のな
い端末処理が可能となること、■この塗料を着色すれば
端末だけでケーブルの識別ができる等、波付鋼管鎧装ケ
ーブルの性能的および機能的な効果が大きなものとする
ことができる．［実 施 例］
以下，図面に基づいてこの発明の実施例を説明する．図
は実施例の構成を示す波付鋼管鎧装ケーブルの一部を破
断して示した側面図である．即ち、ケーブル線心１は波
付鋼管２に挿入されており、この波付鋼管２の外周上を
一液性のエポキシ樹脂の塗料を塗装処理して塗層３が形
成される．そして、さらにこの外周上に、例えばＰｖＣ
等の防食層４を被覆してこの波付鋼管鎧装ケーブルは構
成されている．
塗層３を形成するエポキシ樹脂の組成の実施例を次に示
す．顔料は着色，防錆のために使用している．
（単位二重量％）
なお、塗料名の一例としてカナエ塗料■製の「エボノス
＃５００ブライマーＪ （商品名）が挙げられる．
上記各実施例の塗層３における防食性を評価するため、
従来のアスファルト系塗料を塗布した外径４８ｍｍ波付
鋼管と、実施例１〜３の塗層を最小厚ｌＯμで塗布した
外径４８ｍｍの波付鋼管とを、３％塩水に２０日間浸漬
し、その後３０日間常温（室温）下に放置して試験した
．
この実施例１〜３の塗層を施した波付鋼管では、鋼管の
表面に錆が発生しないが、従来のアスファルト系塗料を
塗布したものでは鋼管の表面に錆が発生していた．
また、外径４８ｍｍの波付鋼管にアスファルト系塗料お
よび実施例１〜３の塗層を１０〜２０μの厚さで塗布し
たちのについて、温度９０℃の温風を吹きかけたところ
、従来のアスファルト系塗料を塗装としたものは変化が
ないのに対し、実施例１〜３の塗層を施したものはいず
れも約５分で固化し、速乾性が認められた．
さらに、外径４８ｍｍの波付鋼管に実施例１〜３の塗層
を施したものを、温度−１０’Ｃおよび６０℃の恒温槽
中に４時間放置した後、これを取り出し、常温下で曲げ
半径４８０ｍｍで５往復曲げて耐曲げ性を試験した．そ
の結果いずれにおいても、塗布面に異常は見られなかっ
た．このように、波付鋼管３とシース（防食層）４との
間には従来アスファルト・系の塗料による塗装が施され
て構成されていたが、この発明では一液性のエポキシ樹
脂系の塗料からなる塗層３が形成されているので、この
ケーブルではケーブル端末部にアスファルト系塗料のよ
うに流れ出すこともなく、また、エポキシ樹脂系塗料に
カーボン等を混入して導電性を付与させて接地効果を高
めることも簡単に可能となる．
また、このエポキシ樹脂系塗料に色別のための顔料を混
入させることにより波付鋼管鎧装ケーブルに色付けし、
例えばパワーケーブルを赤，コントロールケーブルを青
等と用途別に形成して識別できるように簡単に構成する
ことも可能になる．［発明の効果］
以上説明したとおり、この発明の塗装タイプ波付鋼管鎧
装ケーブルは、
■一液性エポキシ樹脂を波付鋼管表面に塗装することで
、ケーブル端末から溶け出しおよび流れ出しが皆無とな
る．
■塗料に導電性を付与することで、万一接地処理の際に
塗料の取り残しがあってち接地効果は変わらない．
■塗料にカラー着色することで、例えば電力用：赤．制
御用；青等のように用途別に回路の識別が可能である．
■一液性エポキシ樹脂塗料は油性，水溶性の塗料に比べ
て速乾性で、かつ防食効果が大きい．[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a coated corrugated steel pipe armored cable. [Prior Art] Conventionally, in corrugated steel pipe chain-clad cables, a corrosion protection layer of asphalt-based paint is provided between the corrugated steel pipe sheath and the sheath above it. The purpose of providing this anti-corrosion layer is to reduce corrosion of the metal layer, which is the cable's corrugated steel pipe sheath, due to moisture penetrating the sheath or water intrusion caused by damage to the sheath. There are many known examples of countermeasures against this problem, but they basically involve adding various materials to an asphalt-based paint. (For example, see Japanese Utility Model Publication No. 50-40851.) [Problems to be Solved by the Invention] The above-mentioned conventional techniques, especially those in which an anticorrosion layer based on asphalt paint is applied to the surface of corrugated steel pipe sheathing, , there are the following problems. ■If the cable has a polyvinyl chloride (PVC) sheath that comes into direct contact with the corrugated steel pipe sheath, the plasticizer in the cable's PvC sheath formulation will migrate to the asphalt-based paint, causing the PvC sheath to harden, and eventually the cable This may lead to cracks in the sheath. ■If the cable is installed with the end facing downward, when the ambient temperature rises, asphalt-based paint will flow out from the terminal, staining the terminal, and although it is originally insulating, it will trap surrounding dust, etc. There is a risk that the electrical insulation will eventually be lost and a short circuit may occur at the terminal. As a countermeasure against this asphalt melting and flowing out,
Various measures are taken, such as sealing the cable terminals, but the economic losses required for pre- and post-processing are enormous. ■One of the advantages of the anticorrosion performance of asphalt-based paints is its adhesion to the metal layer, but on the other hand, this makes it difficult to peel off when working on cable terminals. The above grounding work is required, which significantly impairs terminal workability. Furthermore, conventional oil-based paints dry slowly, and water-soluble paints have less rust prevention effect than oil-based paints. The present invention has been made in view of the above points, and an object of the present invention is to provide a coated corrugated steel pipe armored cable that eliminates the drawbacks of the prior art described above. [Means and effects for solving the problem] This invention has the following features:
The purpose is to paint corrugated steel pipe sheathing with a one-component epoxy resin instead of asphalt paint. By applying this one-component epoxy resin-based paint to the cable's corrugated steel pipe sheath, it prevents it from melting or flowing out from the cable terminal. The performance and functionality of corrugated steel pipe armored cables are improved, such as the ability to process terminals without changing the grounding effect and without contamination, and the ability to identify cables from just the terminals by coloring the paint. The effect can be large. [Examples] Examples of the present invention will be described below based on the drawings. The figure is a partially cutaway side view of a corrugated steel pipe armored cable showing the configuration of an example. That is, the cable core 1 is inserted into a corrugated steel pipe 2, and a one-component epoxy resin paint is applied to the outer circumference of the corrugated steel pipe 2 to form a coating layer 3. Further, on this outer periphery, for example, PvC
This corrugated steel pipe armored cable is constructed by covering it with a corrosion protection layer 4 such as. An example of the composition of the epoxy resin forming the coating layer 3 is shown below. Pigments are used for coloring and rust prevention. (Unit: double weight %) An example of a paint name is "Ebonos #500 Brimer J (trade name)" manufactured by Kanae Paint ■. In order to evaluate the corrosion resistance of the coating layer 3 of each of the above examples,
A corrugated steel pipe with an outer diameter of 48 mm coated with a conventional asphalt-based paint and a corrugated steel pipe with an outer diameter of 48 mm coated with the coating layers of Examples 1 to 3 with a minimum thickness of lOμ were immersed in 3% salt water for 20 days, Thereafter, the test was carried out by leaving it at room temperature for 30 days. In the corrugated steel pipes coated with the coating layers of Examples 1 to 3, rust did not occur on the surface of the steel pipe, but in those coated with the conventional asphalt-based paint, rust occurred on the surface of the steel pipe. In addition, when a corrugated steel pipe with an outer diameter of 48 mm was coated with asphalt-based paint and the coating layers of Examples 1 to 3 to a thickness of 10 to 20 μm, hot air at a temperature of 90°C was blown on it, and it was found that the conventional asphalt While there was no change in the paints coated with the system paints, the coats of Examples 1 to 3 all solidified in about 5 minutes, demonstrating quick-drying properties. Furthermore, corrugated steel pipes with an outer diameter of 48 mm coated with the coating layers of Examples 1 to 3 were left in thermostats at temperatures of -10'C and 60°C for 4 hours, and then taken out and placed at room temperature. The bending resistance was tested by bending it back and forth 5 times with a bending radius of 480 mm. As a result, no abnormality was observed on the coated surface in any case. In this way, the space between the corrugated steel pipe 3 and the sheath (anti-corrosion layer) 4 was conventionally constructed with asphalt-based paint, but in this invention, a one-component epoxy resin-based paint is applied. Because the coating layer 3 is formed on this cable, unlike asphalt-based paint, this cable does not flow out at the end of the cable, and carbon, etc. are mixed into the epoxy resin-based paint to give it conductivity and allow it to be grounded. It is also easy to increase the effectiveness. In addition, by mixing color pigments into this epoxy resin paint, we can color the corrugated steel pipe armored cable.
For example, it is possible to easily configure the power cable to be distinguished by different uses, such as red for power cables and blue for control cables. [Effects of the Invention] As explained above, the coated type corrugated steel pipe armored cable of the present invention has the following features: ■By coating the surface of the corrugated steel pipe with a one-component epoxy resin, there is no melting or flowing out from the cable terminal. Become. ■By adding conductivity to the paint, even if some paint is left behind during the grounding process, the grounding effect will not change. ■By coloring the paint, for example, for electric power: red. For control; circuits can be identified by purpose, such as blue. ■One-component epoxy resin paint dries faster than oil-based or water-soluble paints, and has a greater anti-corrosion effect.
図は、本発明の実施例の塗装タイプ波付鋼管壇装ケーブ
ルの構成を示す横断面図である．ｌ・・・ケーブル線心
２・・・波付鋼管
３・・・エポキシ樹脂層
４・・・防食層（シース）The figure is a cross-sectional view showing the structure of a coated type corrugated steel pipe casing cable according to an embodiment of the present invention. l... Cable core 2... Corrugated steel pipe 3... Epoxy resin layer 4... Anti-corrosion layer (sheath)
Claims (3)
使用して合成樹脂塗料層を設けたことを特徴とする塗装
タイプ波付鋼管鎧装ケーブル。(1) A coated type corrugated steel pipe sheathed cable characterized in that a synthetic resin paint layer is provided on the surface of the corrugated steel pipe sheath using a one-component epoxy resin paint.
ことを特徴とする請求項１記載の塗装タイプ波付鋼管鎧
装ケーブル。(2) The coated corrugated steel pipe armored cable according to claim 1, wherein the one-component epoxy resin paint is imparted with electrical conductivity.
混入し、色別した合成樹脂塗料層を施したことを特徴と
する塗装タイプ波付鋼管鎧装ケーブル。(3) A coated type corrugated steel pipe armored cable characterized in that the one-component epoxy resin paint is mixed with a pigment for coloring and a colored synthetic resin paint layer is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1156814A JPH0325806A (en) | 1989-06-21 | 1989-06-21 | Coating type corrugated steel pipe armored cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1156814A JPH0325806A (en) | 1989-06-21 | 1989-06-21 | Coating type corrugated steel pipe armored cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0325806A true JPH0325806A (en) | 1991-02-04 |
Family
ID=15635915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1156814A Pending JPH0325806A (en) | 1989-06-21 | 1989-06-21 | Coating type corrugated steel pipe armored cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0325806A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6906264B1 (en) | 2004-06-17 | 2005-06-14 | Southwire Company | Color-coded armored cable |
| US7812259B2 (en) | 2008-10-24 | 2010-10-12 | Southwire Company | Metal-clad cable with foraminous coded label |
| CN104575704A (en) * | 2013-10-12 | 2015-04-29 | 宁夏海洋线缆有限公司 | Galvanized steel core cable |
| US9950826B1 (en) | 2009-01-30 | 2018-04-24 | Encore Wire Corporation | Method for applying labels to cable or conduit |
| US10035618B1 (en) | 2009-01-30 | 2018-07-31 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
| US10046879B1 (en) | 2007-06-04 | 2018-08-14 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
| US11031157B1 (en) | 2013-08-23 | 2021-06-08 | Southwire Company, Llc | System and method of printing indicia onto armored cable |
| US11319104B1 (en) | 2009-01-30 | 2022-05-03 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
-
1989
- 1989-06-21 JP JP1156814A patent/JPH0325806A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6906264B1 (en) | 2004-06-17 | 2005-06-14 | Southwire Company | Color-coded armored cable |
| US11827409B1 (en) | 2007-06-04 | 2023-11-28 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
| US11667085B1 (en) | 2007-06-04 | 2023-06-06 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
| US11498715B1 (en) | 2007-06-04 | 2022-11-15 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
| US10046879B1 (en) | 2007-06-04 | 2018-08-14 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
| US10272616B1 (en) | 2007-06-04 | 2019-04-30 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
| US11247404B1 (en) | 2007-06-04 | 2022-02-15 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
| US10759558B1 (en) | 2007-06-04 | 2020-09-01 | Encore Wire Corporation | Method and apparatus for applying labels to cable |
| US7812259B2 (en) | 2008-10-24 | 2010-10-12 | Southwire Company | Metal-clad cable with foraminous coded label |
| US8344254B2 (en) | 2008-10-24 | 2013-01-01 | Southwire Company | Electrical cable with foraminous label |
| US10906685B1 (en) | 2009-01-30 | 2021-02-02 | Encore Wire Corporation | Method for applying labels to cable or conduit |
| US10654607B1 (en) | 2009-01-30 | 2020-05-19 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
| US11319104B1 (en) | 2009-01-30 | 2022-05-03 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
| US10035618B1 (en) | 2009-01-30 | 2018-07-31 | Encore Wire Corporation | System and apparatus for applying labels to cable or conduit |
| US9950826B1 (en) | 2009-01-30 | 2018-04-24 | Encore Wire Corporation | Method for applying labels to cable or conduit |
| US11673702B1 (en) | 2009-01-30 | 2023-06-13 | Encore Wire Corporation | Method for applying labels to cable or conduit |
| US12091207B1 (en) | 2009-01-30 | 2024-09-17 | Encore Wire Corporation | Method for applying labels to cable or conduit |
| US11031157B1 (en) | 2013-08-23 | 2021-06-08 | Southwire Company, Llc | System and method of printing indicia onto armored cable |
| US11670438B2 (en) | 2013-08-23 | 2023-06-06 | Southwire Company, Llc | System and method of printing indicia onto armored cable |
| CN104575704A (en) * | 2013-10-12 | 2015-04-29 | 宁夏海洋线缆有限公司 | Galvanized steel core cable |
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