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
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
- H01B7/28—Protection 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)
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)
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)
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 |
-
1934
- 1934-10-06 AT AT151506D patent/AT151506B/en active
- 1934-10-30 FR FR780470D patent/FR780470A/en not_active Expired
- 1934-11-09 GB GB32267/34A patent/GB443855A/en not_active Expired
Cited By (3)
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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