DE457959C - Protection tube for electrical lines - Google Patents

Protection tube for electrical lines

Info

Publication number
DE457959C
DE457959C DEF60395D DEF0060395D DE457959C DE 457959 C DE457959 C DE 457959C DE F60395 D DEF60395 D DE F60395D DE F0060395 D DEF0060395 D DE F0060395D DE 457959 C DE457959 C DE 457959C
Authority
DE
Germany
Prior art keywords
protection tube
electrical lines
jacket
iron
insulating
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
DEF60395D
Other languages
German (de)
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.)
HERMANN FIRNAU FA
Original Assignee
HERMANN FIRNAU FA
Publication date
Priority to DEF60395D priority Critical patent/DE457959C/en
Application granted granted Critical
Publication of DE457959C publication Critical patent/DE457959C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0462—Tubings, i.e. having a closed section
    • H02G3/0481—Tubings, i.e. having a closed section with a circular cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Insulated Conductors (AREA)

Description

Als Schutzrohre für elektrische Leitungen sind Falzronre_ bekannt, bei denen das eigentliche, aus Isolierstoff bestehende Rohr mit einem,1 darumgefalzten, gegebenenfalls auch feuerverbleiten Eisenband versehen ist. Derartige Isolierrohre sind zwar für Wonnräume und ähnliche Zwecke, nicht aber beispielsweise für chemische Fabriken geeignet, bei denen dieFalzronre_ are known as protective tubes for electrical lines, in which the actual tube, made of insulating material, is provided with an iron band, 1 folded around it, possibly also fire-leaded. Such insulating tubes are indeed suitable for living rooms and similar purposes, but not, for example, for chemical factories where the

ίο Luft mit Dämpfen von Säure oder anderen Chemikalien geschwängert ist. An solchen Orten werden daher grundsätzlich Stahlpanzerrohre verwendet; die bestehen aus einem massiven Eisenmantel, in dessen Innerem dasίο Air is laden with fumes from acids or other chemicals . Steel armored pipes are therefore generally used in such places; they consist of a massive iron jacket, inside which the

ig eigentliche, beispielsweise aus imprägnierten Papierlagen o. dgl. bestehende Isolierrohr untergebracht ist. Obwohl man eine erhöhte Schutzwirkung bei Verwendung in chemischen Fabriken dadurch anzustreben versucht hat, daß man den Eisenmantel mit einer Verzin'-kung (Eeuerverzinkung;) versehen hat, so ist dennoch dieses Ziel niemals erreicht worden. Die Säuredämpfe zerstören mit der Zeit auch den stärksten verzinkten Eisenmantel, so daßig actual, for example from impregnated Layers of paper or the like. Existing insulating tube is housed. Although one raised one Has attempted to achieve a protective effect when used in chemical factories by that the iron jacket has been galvanized (re-galvanized;) so is yet this goal has never been achieved. The acid vapors also destroy over time the strongest galvanized iron jacket, so that

ag erfahrungsgemäß an den gefährdeten Stellen eine häufige Ersetzung der Isolierrohre erforderlich wird.ag, based on experience, in the endangered areas frequent replacement of the insulating tubes is required.

Diese Übelstände beseitigt die Erfindung dadurch, daß ein Stahlpanzerrohr noch mit einem gepreßten, gewalzten oder gezogenen, massiven Bleimantel umgeben wird.
• Die Zeichnung venanschaulicht ein Ausführungsbeispiel der Erfindung in Seitenansicht und Querschnitt eines Stückes des neuen Isolierrohres. Dieses setzt sich zusammen aus der inneren, beispielsweise aus imprägnierten Papierlagen bestehenden Isolierschicht 1, dem massiven Eisenmantel 2 und dem gleichfalls massiven, durch Pressen, Walzen oder Ziehen aufgebrachten Bleimantel 3. Unter gewissen Umständen kann auch die innere Isolierschicht 1 wegbleiben, z. B. bei Drehstromanlagen und dann, wenn eine Innenisolation der Rohre nicht verlangt wird.The invention eliminates these drawbacks in that an armored steel pipe is surrounded by a pressed, rolled or drawn, solid lead jacket.
• The drawing illustrates an embodiment of the invention in side view and cross section of a piece of the new insulating tube. This is composed of the inner insulating layer 1, for example consisting of impregnated paper layers, the solid iron jacket 2 and the equally massive lead jacket 3, which is applied by pressing, rolling or drawing. B. with three-phase systems and when internal insulation of the pipes is not required.

Claims (1)

Patentanspruch:Claim: !Schutzrohr für elektrische Leitungen, bestehend aus einem Eisenmantel mit oder ohne innere Isolierschicht, dadurch gekennzeichnet, daß auf den Eisenmantel ein massiver Bleimantel durch Pressen, Walzen oder Ziehen aufgebracht ist.! Protection tube for electrical cables, consisting of an iron jacket with or without inner insulating layer, characterized in that a solid lead jacket is pressed onto the iron jacket, Rolling or pulling is applied.
DEF60395D Protection tube for electrical lines Expired DE457959C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF60395D DE457959C (en) Protection tube for electrical lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF60395D DE457959C (en) Protection tube for electrical lines

Publications (1)

Publication Number Publication Date
DE457959C true DE457959C (en) 1928-03-27

Family

ID=7109066

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF60395D Expired DE457959C (en) Protection tube for electrical lines

Country Status (1)

Country Link
DE (1) DE457959C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1222135B (en) * 1954-12-06 1966-08-04 Fraenk Isolierrohr & Metall Flexible electrical conduit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1222135B (en) * 1954-12-06 1966-08-04 Fraenk Isolierrohr & Metall Flexible electrical conduit

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