AT151506B - Lead sheath replacement for cables. - Google Patents

Lead sheath replacement for cables.

Info

Publication number
AT151506B
AT151506B AT151506DA AT151506B AT 151506 B AT151506 B AT 151506B AT 151506D A AT151506D A AT 151506DA AT 151506 B AT151506 B AT 151506B
Authority
AT
Austria
Prior art keywords
alternating current
earth
practically
wave
cables
Prior art date
Application number
Other languages
German (de)
Inventor
Fritz Dr Schmidt
Original Assignee
Fritz Dr Schmidt
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 Fritz Dr Schmidt filed Critical Fritz Dr Schmidt
Application granted granted Critical
Publication of AT151506B publication Critical patent/AT151506B/en

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
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Organic Insulating Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



    Kesselsteinbeseitigting   mittels Wechselstrom. 



   Bekannt sind verschiedene Verfahren und Einrichtungen, welche durch   Zuführung   von elek- trischem Strom verschiedener Art und Spannung die Kesselsteinbildung in Flüssigkeitsbehältern ver- hindern und bereits bestehenden Steinansatz beseitigen. 



   Alle diese Verfahren erfordern mehr oder minder kostspielige Einrichtungen und Installationen, weswegen sie trotz des sehr grossen Verwendungsgebietes nicht recht Eingang finden können. Vorliegendes Verfahren verwendet gleichfalls elektrischen Strom, doch ist die zu seiner Verwendung geeignete Einrichtung derart vereinfacht, dass eine solche Anlage mit minimalsten Mitteln aufgestellt werden kann, wobei die Wirkung durch etwaige auftretende Defekte, welche in einer komplizierten
Apparatur auftreten würden, nicht beeinträchtigt werden kann. 



   Wechselstrom hat sieh für den vorliegenden Zweck nicht als günstig erwiesen und desgleichen
Gleichstrom, der bei grösserem Stromdurchgang und niedriger Spannung zwar die Steinbildung unterbindet, jedoch gleichzeitig das Metall der Behälter oder Rohre zersetzt. Verwendung von anders gearteter Elektrizität, z. B. pulsierendem Gleichstrom, bedingt eine besondere Einrichtung. 



   Vorliegende Erfindung verwendet Wechselstrom, der durch die Anordnung der Einrichtung sich in Art von pulsierendem Gleichstrom auswirkt bzw. dessen für den vorliegenden Zweck erforderliche Eigenschaften aufweist, ohne indessen eine   tatsächliche   Gleichrichtung des Wechselstromes durch- zuführen. 



   Bei der vorliegenden Einrichtung werden derart geringe Intensitäten der angewandten Elektrizität verwendet, dass hiebei die in der Leitung und noch mehr an dem meist umfangreichen Metallobjekt entstehenden Verluste die ausschlaggebende Rolle spielen, da die Anordnung der Einrichtung erreicht, dass nur eine Halbwelle des Wechselstromes praktisch genutzt wird, hingegen die andere infolge Verluste und Erdung praktisch unterdrückt wird. Es ist klar, dass dergleichen Anordnung wohl nur für den vorliegenden Zweck Verwendung finden kann und von einer neuen Art von Wechselstromgleichrichtung nicht die Rede ist. In der Zeichnung sind die zwei Leitstüeke einer Wechselstromquelle mit 1 bezeichnet, von welchen wir den Wechselstrom mittels weiterer zwei Leitstücke 2 und 3 dem Metallobjekt 4 zuführen, dessen Erdung mit 5 bezeichnet ist. 



   Das der Erdung. 5 mehr entfernte   Leitstück.'2   hat vor dem Anschluss an das Metallobjekt 4 einen Widerstand 2'zwischengeschaltet, welcher geringer bemessen ist, als der Widerstand 3'des der Erdung 5 nähergelegenen   Leitstückes 3.   

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



    Removal of scale using alternating current.



   Various methods and devices are known which, by supplying electrical currents of various types and voltages, prevent the formation of scale in liquid containers and remove existing scale deposits.



   All of these methods require more or less expensive facilities and installations, which is why they cannot really find their way despite the very large area of application. The present method also uses electrical current, but the equipment suitable for its use is simplified in such a way that such a system can be set up with minimal resources, the effect being caused by any defects that occur, which in a complicated
Apparatus would occur cannot be impaired.



   Alternating current has not proven beneficial for the present purpose and the like
Direct current, which prevents the formation of stones when there is a higher current flow and low voltage, but at the same time decomposes the metal of the containers or pipes. Use of other types of electricity, e.g. B. pulsating direct current, requires a special facility.



   The present invention uses alternating current which, due to the arrangement of the device, has the effect of pulsating direct current or has the properties required for the present purpose, without actually rectifying the alternating current.



   In the case of the present device, such low intensities of the applied electricity are used that the losses occurring in the line and even more on the mostly extensive metal object play the decisive role, since the arrangement of the device ensures that only a half-wave of the alternating current is used in practice , while the other is practically suppressed due to losses and grounding. It is clear that the same arrangement can only be used for the present purpose and that there is no question of a new type of AC rectification. In the drawing, the two conducting pieces of an alternating current source are denoted by 1, from which we supply the alternating current to the metal object 4, the grounding of which is denoted by 5, by means of further two conducting pieces 2 and 3.



   That of grounding. 5 more distant conductive piece. '2 has a resistor 2' interposed before the connection to the metal object 4, which is dimensioned smaller than the resistance 3 'of the conductive piece 3 closer to the grounding 5.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

Infolge der Schaltung dieser Einrichtung wird praktisch nur jene Halbwelle des Wechselstromes genutzt, welche in der Richtung von Wechselstromquelle über Gleitstück'7 über das Objekt 4 zum Leitstück 3 und Erde 5 verläuft, wogegen die entgegengesetzt abgehende Halbwelle infolge entsprechend stark bemessenen Widerstandes 3', naher Erde 5 und der Verluste praktisch unterdrückt ist. As a result of the switching of this device, practically only that half-wave of the alternating current is used, which runs in the direction of the alternating current source via slider'7 via object 4 to conductive piece 3 and earth 5, whereas the half-wave outgoing in the opposite direction due to a correspondingly strong resistance 3 ', closer Earth 5 and the losses are practically suppressed. Die Vorzüge derartiger Einrichtung für Entfernung und Verhinderung von Kesselsteinsätzen an Behältern und Rohren sind hauptsächlich : defektlose Arbeitsweise der Einrichtung, da keine Hilfseinrichtungen benötigt werden, welche einer Abnutzung unterworfen sind und ausserdem billigste Einrichtung, da keine zentrale Apparatur benötigt wird, welche eine verzweigte Leitungsverlegung von Apparat zu einzelnen Stellen des Sehutzobjektes erfordert, sondern es kann jeder Anschluss nach vorliegender Erfindung direkt dem überall zur Verfügung stehenden Lichtstromnetz entnommen werden. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. The advantages of such a device for the removal and prevention of scale deposits on containers and pipes are mainly: the device works properly, since no auxiliary devices are required that are subject to wear and tear and, moreover, the cheapest device, since no central apparatus is required to lay a branched line from Requires apparatus to individual points of the protective object, but each connection according to the present invention can be taken directly from the luminous flux network available everywhere. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT151506D 1933-11-20 1934-10-06 Lead sheath replacement for cables. AT151506B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE780470X 1933-11-20

Publications (1)

Publication Number Publication Date
AT151506B true AT151506B (en) 1937-11-25

Family

ID=6688656

Family Applications (1)

Application Number Title Priority Date Filing Date
AT151506D AT151506B (en) 1933-11-20 1934-10-06 Lead sheath replacement for cables.

Country Status (3)

Country Link
AT (1) AT151506B (en)
FR (1) FR780470A (en)
GB (1) GB443855A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967316C (en) * 1951-07-04 1957-11-07 Silec Liaisons Elec Fireproof electrical cable that is operationally reliable even at temperatures over 200íÒC
DE972906C (en) * 1939-09-15 1959-10-29 Aeg Insulating material for electrical conductors
DE973016C (en) * 1938-12-30 1959-11-19 Dynamit Nobel Ag Sheath mass for cables and wires

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE959118C (en) * 1937-11-11 1957-02-28 Kabelwerk Wagner K G Fiber-free electrical cable with rubber insulation, which is covered with a cellulose derivative layer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973016C (en) * 1938-12-30 1959-11-19 Dynamit Nobel Ag Sheath mass for cables and wires
DE972906C (en) * 1939-09-15 1959-10-29 Aeg Insulating material for electrical conductors
DE967316C (en) * 1951-07-04 1957-11-07 Silec Liaisons Elec Fireproof electrical cable that is operationally reliable even at temperatures over 200íÒC

Also Published As

Publication number Publication date
GB443855A (en) 1936-03-09
FR780470A (en) 1935-04-26

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