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DE727742C - Lead sheath replacement for electrical lines - Google Patents

Lead sheath replacement for electrical lines

Info

Publication number
DE727742C
DE727742C DEK157497D DEK0157497D DE727742C DE 727742 C DE727742 C DE 727742C DE K157497 D DEK157497 D DE K157497D DE K0157497 D DEK0157497 D DE K0157497D DE 727742 C DE727742 C DE 727742C
Authority
DE
Germany
Prior art keywords
electrical lines
lead sheath
replacement
sheath
sheath replacement
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
Application number
DEK157497D
Other languages
German (de)
Inventor
Max Maltzahn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KABELWERK VACHA AKT GES
Original Assignee
KABELWERK VACHA AKT GES
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KABELWERK VACHA AKT GES filed Critical KABELWERK VACHA AKT GES
Priority to DEK157497D priority Critical patent/DE727742C/en
Application granted granted Critical
Publication of DE727742C publication Critical patent/DE727742C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring

Landscapes

  • Manufacturing Of Electric Cables (AREA)

Description

Bleimantelersatz für elektrische Leitungen Zusatz zum Patent 704 668 Nach dem Patent 70q.668 wird eine luftraumfreieDielektrikumhülle fürHochfrequenzleitungen aus thermoplastischen Kunststoffen im Bedeckungsverfahren in der Weise hergestellt, daß Bänder, die abwechselnd Querstreifen aus hartem Dielektrikum, wie beispielsweise hochpolymerisiertem Polystyrol, und geschmeidigem Dielektrikum, wie Polyisobutylen, aufweisen, von beiden- Seiten so auf einen blanken oder isolierten Leiter aufgelegt werden, daß die harten Querstreifen auf der einen Leiterseite im wesentlichen in die gleiche Querschnittsebene fallen wie die auf der anderen Seite und ebenso entsprechend die weichen Querstreifen, so daß die Bedeckungswalzen dann ein Dielektrikum erzeugen, das aus im wesentlichen starren oder formfesten Zylinderstücken besteht, zwischen denen nachgiebige Zylinderstücke liegen, derart, daß das gesamte Gebilde eine wasserfeste Isolierhülle bildet.Lead sheath replacement for electrical cables Addition to patent 704 668 According to the patent 70q.668 an air space-free dielectric sheath for high-frequency lines made of thermoplastics in the covering process in such a way that that tapes that alternate transverse strips of hard dielectric, such as high-polymerized polystyrene, and flexible dielectric, such as polyisobutylene, have, placed on a bare or insulated conductor from both sides that the hard transverse strips on one side of the conductor are essentially in fall the same cross-sectional plane as those on the other side and likewise accordingly the soft transverse strips, so that the covering rollers then produce a dielectric, which consists of essentially rigid or dimensionally stable cylinder pieces, between which are flexible cylinder pieces, such that the entire structure is waterproof Forms insulating cover.

Die Erfindung beruht nun auf der Erkenntnis, daß eine auf diese Weise hergestellte wasserdichte Dielektrikumhülle einen ausgezeichneten Ersatz für Bleimäntel elektrischer Leitungen darstellt.The invention is based on the knowledge that one in this way made waterproof dielectric sheath is an excellent substitute for lead sheaths represents electrical lines.

Alle bisherigen Vorschläge, bei Kabelmänteln Blei durch einen anderen Werkstoff zu ersetzen, leiden darunter, daß dem Werkstoff entweder die notwendige Schmiegsamkeit oder die nötige Formfestigkeit fehlt. Die in der neuartigen Weise gebildete Hülle aus das Leitergebilde umschließenden Ringen von abwechselnd formfestem und nachgiebigem Isolierstoff nach dem Hauptpatent ergibt nun einen vollkommen wasserdichten und biegsamen Verbundschlauch, der die Aufgaben der Schmiegsamkeit und der Formfestigkeit auf die aufeinanderfolgenden Ringe verteilt. Durch das Aufbringen in der Bedeckungsmaschine verbinden sich die Ringkörper schon dann zu einer querwasserfesten Hülle, wenn sie mit Kreisringflächen stumpf aufeinandertreffen. Eine noch größere Sicherheit läßt sich erzielen, wenn in der im Hauptpatent geschilderten Weise durch Aufdecken von mehreren Gebilden, in denen die Querstreifen abwechselnd verschiedene Breite haben, eine Verzahnung zwischen den einander folgenden Ringstücken bewirkt wird.All previous proposals, in the case of cable sheaths, lead by another To replace material, suffer from the fact that the material either the necessary Pliability or the necessary dimensional stability is lacking. The in the novel way Sheath formed from the conductor structure enclosing rings of alternately dimensionally stable and flexible insulating material according to the main patent now results in one completely watertight and flexible composite hose that does the job of being flexible and the dimensional stability distributed over the successive rings. By applying In the covering machine, the ring bodies then combine to form a transverse water-resistant one Shell when they butt meet with circular ring surfaces. An even bigger one Security can be achieved if in the manner described in the main patent Uncovering several structures in which the horizontal stripes alternate different Have width, causes a toothing between the following ring pieces will.

Beim Biegen einer derartigen Hülle vermögen die weichen Zwischenringe in ausreichendem Maße nachzugeben. Andererseits bilden die Ringe aus formfestem Werkstoff eine vollkommen sichere Stütze, die insbesondere ihre Wirkung dann zeigt, wenn der ummantelte Leiter von Schellen gehaltert oder durch Wanddurchführungen geleitet wird, in denen die Leitung einem seitlichen Druck ausgesetzt ist. In dieser Richtung unterscheidet sich, der Bleimantelersatz nach vorliegender Erfindung wesentlich von den bekannten Kunststoffhüllen, beispielsweise aus Polyvinylchloridmischungen, die bei ausreichender Biegsamkeit der Hülle sich in den Schellen verlagern bzw. unter dem Druck der metallischen Halter im-Laufe der Zeit nachgeben.The soft intermediate rings are capable of bending such a casing to give in sufficiently. On the other hand, the rings are made of dimensionally stable Material a completely secure support, which especially shows its effect, if the sheathed conductor is held in place by clamps or through wall ducts in which the line is subjected to side pressure. In this Direction differs, the lead sheath replacement according to the present invention is essential of the known plastic casings, for example made of polyvinyl chloride mixtures, which move or move in the clamps if the sheath is sufficiently flexible. yield under the pressure of the metal holder over time.

Claims (1)

PATENTANSPRUCH: Verwendung der nach dem Verfahren nach Patent 704668 hergestellten Dielektrikumhülle aus thermoplastischem Kunststoff aus abwechselnd formfesten und nachgiebigen Dielektrikumringkörpern als Bleimantelersatz für elektrische Leitungen. PATENT CLAIM: Use of the dielectric sheath made of thermoplastic material, made according to the method according to patent 704668, consisting of alternately dimensionally stable and flexible dielectric ring bodies as a lead sheath replacement for electrical lines.
DEK157497D 1940-03-01 1940-03-01 Lead sheath replacement for electrical lines Expired DE727742C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK157497D DE727742C (en) 1940-03-01 1940-03-01 Lead sheath replacement for electrical lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK157497D DE727742C (en) 1940-03-01 1940-03-01 Lead sheath replacement for electrical lines

Publications (1)

Publication Number Publication Date
DE727742C true DE727742C (en) 1942-11-11

Family

ID=7253690

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK157497D Expired DE727742C (en) 1940-03-01 1940-03-01 Lead sheath replacement for electrical lines

Country Status (1)

Country Link
DE (1) DE727742C (en)

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