DE378054C - Underground cables - Google Patents
Underground cablesInfo
- Publication number
- DE378054C DE378054C DEB96856D DEB0096856D DE378054C DE 378054 C DE378054 C DE 378054C DE B96856 D DEB96856 D DE B96856D DE B0096856 D DEB0096856 D DE B0096856D DE 378054 C DE378054 C DE 378054C
- Authority
- DE
- Germany
- Prior art keywords
- underground cables
- conductors
- cables
- cable
- metal strips
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/226—Helicoidally wound metal wires or tapes
Landscapes
- Insulated Conductors (AREA)
Description
Jakob Burling in Hamborn a. Rh.Jakob Burling in Hamborn a. Rh.
Erdkabel. Patentiert im Deutschen Reiche vom 13. November 1920 ab. Underground cables. Patented in the German Empire on November 13, 1920.
In den Kabelnetzen, insbesondere in denen der Bergbaubezirke, ergeben sich bisher vielfach dadurch Störungen, daß die Kabel infolge der Einwirkung von Bodensenkungen an den Yerbindungsmuffen gestaucht oder gezerrt werden und dadurch die Leiter abreißen. Die bisher zur Verhinderung dieses Übelstandes benutzten Dehnungsmuffen können keine wirkliche Abhilfe schaffen.In the cable networks, especially in those of the mining districts, there are so far many thereby disturbances that the cables as a result of the action of subsidence on the Connection sleeves are compressed or pulled, thereby tearing off the conductors. the Expansion sleeves previously used to prevent this drawback cannot provide real relief.
ίο Nach der Erfindung werden die Kabel so ausgebildet, daß ihre Leiter dehnbar und stauchbar sind und daher die in Betracht kommenden Längsbeanspruchungen ertragen können. Es wird dazu von einer Maßnahme Gebrauch gemacht, welche zu anderem Zweck, nämlich zu der Verbesserung der Biegsamkeit beweglicher Leitungen, beispielsweise Telephonschnüren, schon benutzt worden ist. Die Leiter der Erdkabel werden aus mehrerenίο According to the invention, the cables are designed so that their conductors are stretchable and are compressible and can therefore withstand the longitudinal loads in question. For this purpose, use is made of a measure which, for a different purpose, namely to improve the flexibility of flexible lines, for example telephone cords, has already been used. The conductors of the underground cables are made up of several
ao Lagen von Metallbändern gebildet, die schraubenförmig so übereinandergewickelt werden, daß zwischen den einzelnen Gängen jeder Schicht sich Luftzwischenräume befinden, die von den benachbarten Bändern überdeckt werden. Durch dieses \ersetzen der Windungen benachbarter Schichten gegeneinander, welches bei den Telephonschnüren lediglich den Zweck hat, die Stromleitung nach dem infolge der ständigen Durchbiegungen erfolgenden Bandbruche aufrechtzuerhalten, wird hier bei dem Kabel der geschlossene röhrenförmige, zur Übertragung der in Betracht kommenden Energiemengen erforderliche Querschnitt der Leiter erzielt, die bei der Längsbeanspruchung der Kabel sich um ein gewisses Maß \-erkürzen oder verlängern können.ao layers of metal strips are formed, which are helically wound one on top of the other so that there are air gaps between the individual corridors of each layer, which are covered by the adjacent strips. By replacing the turns of adjacent layers against each other, which in the case of telephone cords only has the purpose of maintaining the current conduction after the band breaks resulting from the constant bending, the closed tubular cross-section of the cable, which is necessary for the transmission of the relevant amounts of energy, becomes the Head achieved which is a measure \ in the longitudinal strain of the cables - can erkürzen or extend.
In der Zeichnung ist eine Ausführungsform des Kabels dargestellt. Es zeigen: In the drawing, an embodiment of the cable is shown. Show it:
Abb. ι eine Ansicht eines Leiters,Fig. Ι a view of a conductor,
Abb. 2 einen dazugehörigen Querschnitt, Abb. 3 einen Querschnitt durch das Kabel,
Abb. 4 eine \'erbindungsstelle.
Um eine aus Hanf bestehende Seele α sind mehrere Metallbänder b, c, d usw. schraubenförmig
gewickelt. Zwischen den Lagen der einzelnen Bänder befinden sich Zwischenräume e, die jedoch jeweils von dem folgenden
Band überdeckt sind. Es ergibt sich somit ein röhrenförmiger Leiter, der bei der
Längsbeanspruchung des Kabels durch Bodensenkungen um das in Betracht kommende Maß zusammengedrückt oder verlängert
werden kann. Das Abreißen der Leiter an den Verbindungsmuffen und das Entstehen von Kurzschlüssen wird dadurch verhindert.Fig. 2 shows a corresponding cross-section, Fig. 3 shows a cross-section through the cable, Fig. 4 shows a connection point.
Several metal strips b, c, d , etc. are helically wound around a core α made of hemp. There are spaces e between the layers of the individual bands, but these are each covered by the following band. The result is a tubular conductor which, when the cable is subjected to longitudinal stress, can be compressed or lengthened by the relevant amount due to subsidence. This prevents the conductors from being torn off at the connection sleeves and from short circuits.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB96856D DE378054C (en) | Underground cables |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB96856D DE378054C (en) | Underground cables |
Publications (1)
Publication Number | Publication Date |
---|---|
DE378054C true DE378054C (en) | 1923-07-03 |
Family
ID=6988957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB96856D Expired DE378054C (en) | Underground cables |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE378054C (en) |
-
0
- DE DEB96856D patent/DE378054C/en not_active Expired
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