DE2119573A1 - Power cable - with space between sheathed leads filled with weakly conductive polyurethane foam - Google Patents

Power cable - with space between sheathed leads filled with weakly conductive polyurethane foam

Info

Publication number
DE2119573A1
DE2119573A1 DE19712119573 DE2119573A DE2119573A1 DE 2119573 A1 DE2119573 A1 DE 2119573A1 DE 19712119573 DE19712119573 DE 19712119573 DE 2119573 A DE2119573 A DE 2119573A DE 2119573 A1 DE2119573 A1 DE 2119573A1
Authority
DE
Germany
Prior art keywords
power cable
polyurethane foam
space
filled
weakly conductive
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
Application number
DE19712119573
Other languages
German (de)
Inventor
Kadry Dipl.-Ing. 4100 Duisburg El Amir
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.)
Vereinigte Draht und Kabelwerke AG
Original Assignee
Vereinigte Draht und Kabelwerke AG
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 Vereinigte Draht und Kabelwerke AG filed Critical Vereinigte Draht und Kabelwerke AG
Priority to DE19712119573 priority Critical patent/DE2119573A1/en
Publication of DE2119573A1 publication Critical patent/DE2119573A1/en
Pending 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
    • H01B7/1895Internal space filling-up means
    • 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
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • H01B7/288Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using hygroscopic material or material swelling in the presence of liquid
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/02Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Landscapes

  • Insulated Conductors (AREA)

Abstract

Cable has several cores individually insulated with plastic and shielded with a weakly conductive material and sheathed in a common sleeve in which the filler space within the common sleeve is filled with an electrically conductive plastic foam. Pref. the filler material is a polyurethane foam.

Description

S t a r k s t r o m k a b e l Die Erfindung betrifft ein Starkstromkabel mit- mehreren einzeln mit Kunstsoff isolierten Adern, welche mit einer gemeinsamen Umhüllung umgeben sind.S t a r k s t r o m k a b e l The invention relates to a power cable with several wires individually insulated with plastic, which are connected to a common Enclosure are surrounded.

Derartige Starkstromkabel bestehen in der Regel aus drei Leitern, die einzeln isoliert sind. Um einen radialen Verlauf der Feldinien um eine jede Ader zu erreichen und damit die elektrische Sicherheit des Kabels zu erhöhen, ist jeder der Leiter mit liner Abschirmung, beispielsweise aus leitfähigem Kunstst9rf, versehen. Die Adern sind in der Regel miteinander verseilt. Zum Schutz der Adern des Kabels vor Beschädigungen durch äußere Einflüsse sind sie mit einer gemeinsamen äußeren Umhüllung versehen, welche beispielsweise in Form eines Wellrohrmantels oder einer Bewicklung und Bewchrung aufgebracht sein kann. Die äußere Umhüllung muß @ierbei so dimensioniert sein, daß sic Kurzschlußströme führen kann.Such power cables usually consist of three conductors, which are individually isolated. Around a radial course of the field lines around each Reaching the core and thus increasing the electrical safety of the cable is each of the conductors with liner shielding, for example made of conductive plastic, Mistake. The cores are usually stranded together. To protect the cores of the cable from damage by external influences they are with a common outer Envelope provided, which for example in the form of a corrugated pipe jacket or a Wrapping and reinforcement can be applied. The outer covering must be @ierbei be dimensioned so that it can carry short-circuit currents.

Aus Sicherheitsgründen werden die Abschirmungen der Adern auf Erdpotential gebracht. Hierzu sind die Zwickel mit leitfähigen Beiläufen oder oxtrudierten leitfähigen Füllungen ausgefüllt, so daß ein elektrischer Koatakt zwischen den Aderabschirmungen und der äußeren Umhüllung der Kabels besteht.For safety reasons, the wire shields are at ground potential brought. For this purpose, the gussets are provided with conductive fillings or extruded conductive ones Fillings filled in, so that an electrical co-contact between the core shields and the outer covering of the cable.

Diese Zwickelfüllungen dienen gleichzeitig zur Vermeldung von Deformierungen der äußeron Umhüllung und damit Gefährdungen der Adern und zur Erzielung einer gewissen Längswasserdichtigkeit der Anordnung. Der Nachtteil der bekannten Strakstromkabel dieser Art liegt darin, daß die leitfähigen Beiläufe und extrudierten Füllungen sehr unwirtschaftlich sind, da sic hohen Aufwand erfordern. Aißerdem läßt sich mit einer solchen Zwickelfüllung auch keine zuverlässige Abdichtung der Anordung in Längsrichtung bewirken.These gusset fillings also serve to prevent deformations the outer covering and thus endangerment of the veins and to achieve a certain Longitudinal watertightness of the arrangement. The night part of the well-known Strakstromkabel this type lies in the conductive drains and extruded fillings are very uneconomical because they require a lot of effort. In addition, can be with such a gusset filling also does not provide a reliable seal for the arrangement Cause longitudinal direction.

Aufgabe der vorliegenden Erfindung Ist es, ein längswasserdichtes Starkstromkabel aufzuzeigen, bei welchem auf der Kontakt zwischen Abschirmung und äußerer Umhüllung einfache und wirtschaftliche Art hergestellt ist. Gelöst wird diese Aufgabe gemäß der Erfindung dadurch, daß die Zwickelräume innerhalb der gemeinsamen Umhüllung mit einem elektrisch leitenden Kunststoffschaum gefüllt sind. Als Kunststoffschaum ist insbesondere ein elektrisch schwach leitend gemachter Polyurethanschaum vorgesehen.The object of the present invention is to provide a longitudinally watertight Power cable to show where the contact between the shield and outer covering is made simple and economical type. Is resolved this object according to the invention in that the gusset spaces within the common Enclosure are filled with an electrically conductive plastic foam. As plastic foam In particular, a polyurethane foam made electrically weakly conductive is provided.

Der Vorteil des erfindungsgemäßen Starkstromkabels. Ist darin zu sehen, daß seine Herstellung überaus einfach und wirtschaftlich ist. Der Kabelaufbau ist kompakt und bietct eine zuverlässige Längswasserdichtigkeit sowie einen ausreichenden elektrischen und mechanischen Schutz. Die zuverlässige Längswasserdichtigkeit und die Verwendung de schwach leitenden Kunststoffschaums als Füllmittel für die Zwickelräume und die auf die Aderisolierung aufgebrachte Schicht aus elektrisch leitendem Material machen die Aufbringung von Metallmänteln zuf die Aderisolierungen entbehrlich, wenn die äußere Umhüllung kurzschlußfest dimensioniert ist.The advantage of the power cable according to the invention. Can be seen in it that its manufacture is extremely simple and economical. The cable structure is compact and offers reliable longitudinal watertightness as well as adequate electrical and mechanical protection. The reliable longitudinal watertightness and the use de weakly conductive plastic foam as a filler for the interstices and the Make a layer of electrically conductive material applied to the core insulation the application of metal sheaths to the core insulation is dispensable if the outer sheath is dimensioned to be short-circuit proof.

Ein Ausführungsbeispiel des Starkstromkabels nach der Erfindung ist in der Zeichnung dargestellt. 1 sind die Leiter des Kabels, die einzeln jeweils mit einer halbleitender, Schicht 2, einer Aderisolierung 3 und einer schwach leitenden Schicht 4 umgeben sind. Die Adern liegen gemeinsam in einem Metallwellmantel G, der auf seiner Außenseite mit einer Korrosions-Schutzschicht 7 und einer Schutzhülle 8 versehen sein kann.An embodiment of the power cable according to the invention is shown in the drawing. 1 are the conductors of the cable, individually each with a semiconducting layer 2, a core insulation 3 and a weakly conductive one Layer 4 are surrounded. The cores lie together in a corrugated metal jacket G, the one on its outside with a corrosion protection layer 7 and a protective cover 8 can be provided.

Die Zwickelraume innerhalb des Metallwellmantels 6 und zwiehen den Kabeladern sind mit eie schwach leitenden Kunststoffschaum 5 ausgefüllt.The interstices within the corrugated metal jacket 6 and between the Cable cores are filled with a weakly conductive plastic foam 5.

@ S. Zerchr@lbung @ Bl. Zeinung. m. 1 Fig.@ S. Zerchr @ lbung @ Bl. Zeinung. with 1 fig.

@ Patentanspüche Patentansprüche @ Patent claims Patent claims

Claims (2)

P a t e n t a n s p r ü c h e 1. Starkstromkabel mit mehreren einzeln mit Kunststoff isolierten,mit einer Schicht aus elektrisch schwach leitendem Material abgeschirmten Adern, welche mit; einer gemeinsamen Umhüllung umgeben sind, dadurch gekennzeichnet, daß die Zwickelräume innerhalb der gemeinsamen Umhüllung mit einem elektrisch leitenden Kunststoffschaum öefüllt sind.P a t e n t a n t a n t r ü c h e 1. Power cables with several individually insulated with plastic, with a layer of electrically weakly conductive material shielded cores, which with; are surrounded by a common envelope, thereby characterized in that the gusset spaces within the common envelope with a electrically conductive plastic foam are filled. 2. Starkstromkabel nach Anspruch 1, dadurch gekennzeichnet, daß als Kunststoffschaum ein elektrisch schwach leltend gemachter Polyurethanschaum vorgesehen ist.2. Power cable according to claim 1, characterized in that as Plastic foam, an electrically weakly leltend made polyurethane foam, is provided is.
DE19712119573 1971-04-17 1971-04-17 Power cable - with space between sheathed leads filled with weakly conductive polyurethane foam Pending DE2119573A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712119573 DE2119573A1 (en) 1971-04-17 1971-04-17 Power cable - with space between sheathed leads filled with weakly conductive polyurethane foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712119573 DE2119573A1 (en) 1971-04-17 1971-04-17 Power cable - with space between sheathed leads filled with weakly conductive polyurethane foam

Publications (1)

Publication Number Publication Date
DE2119573A1 true DE2119573A1 (en) 1972-11-02

Family

ID=5805498

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712119573 Pending DE2119573A1 (en) 1971-04-17 1971-04-17 Power cable - with space between sheathed leads filled with weakly conductive polyurethane foam

Country Status (1)

Country Link
DE (1) DE2119573A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2678763A1 (en) * 1991-07-02 1993-01-08 Thomson Csf Connection cable, especially for an intracavitary probe
EP1921635A1 (en) * 2006-11-10 2008-05-14 Nexans Electrical connecting cable for a motor vehicle sub-unit
WO2013131787A1 (en) * 2012-03-08 2013-09-12 Tyco Electronics Amp Gmbh Cable having electrical shielding and seal
CN104409147A (en) * 2014-11-19 2015-03-11 浙江汉维通信器材有限公司 Plastic flexible foam filler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2678763A1 (en) * 1991-07-02 1993-01-08 Thomson Csf Connection cable, especially for an intracavitary probe
EP1921635A1 (en) * 2006-11-10 2008-05-14 Nexans Electrical connecting cable for a motor vehicle sub-unit
WO2013131787A1 (en) * 2012-03-08 2013-09-12 Tyco Electronics Amp Gmbh Cable having electrical shielding and seal
US9613731B2 (en) 2012-03-08 2017-04-04 Te Connectivity Germany Gmbh Cable having electrical shielding and seal
CN104409147A (en) * 2014-11-19 2015-03-11 浙江汉维通信器材有限公司 Plastic flexible foam filler

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