DE519557C - High voltage cables - Google Patents

High voltage cables

Info

Publication number
DE519557C
DE519557C DE1930519557D DE519557DD DE519557C DE 519557 C DE519557 C DE 519557C DE 1930519557 D DE1930519557 D DE 1930519557D DE 519557D D DE519557D D DE 519557DD DE 519557 C DE519557 C DE 519557C
Authority
DE
Germany
Prior art keywords
pressure
high voltage
voltage cables
pressure medium
substances
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
DE1930519557D
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.)
Felten and Guilleaume Carlswerk AG
Original Assignee
Felten and Guilleaume Carlswerk 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 Felten and Guilleaume Carlswerk AG filed Critical Felten and Guilleaume Carlswerk AG
Application granted granted Critical
Publication of DE519557C publication Critical patent/DE519557C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/06—Gas-pressure cables; Oil-pressure cables; Cables for use in conduits under fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2101/00—Uses or applications of pigs or moles
    • F16L2101/30—Inspecting, measuring or testing

Landscapes

  • Locating Faults (AREA)

Description

Hochspannungskabel ES ist bekannt, die Isolation von Hochspannungskabeln zwecks Verbesserung der Durchschlagsfestigkeit unter Druck zu setzen und dabei das Druckmittel von der Isolation durch eine für das Druckmittel undurchlässige, aber drucknachgiebige Schicht zu trennen. Eine Beanspruchung des Druckmittels durch das elektrische Feld kann durch Leitendmachung dieser Schicht vermieden werden. Als Druckmittel können ein Gas oder eine Flüssigkeit verwendet werden. Die Auswahl der Stoffe, die .als Druckgas oder -flüssigkeit in Frage kommen, ist für die Druckwirkung ohne Bedeutung. Es ist nun für die Frage der Lebensdauer und der Betriebssicherheit solcher Kabel von größter Wichtigkeit, daß etwa auftretende Undichtigkeiten in den Druckleitungen schnell gefunden und beseitigt werden können. Zur Aufsuchung solcher Stellen sind keine elektrischen Meßv erfahren bekannt, wie sie bei der Kabelfehlerortsbestimmung sonst üblich sind. Druckgefällemessungen sind nur bei groben Fehlern anwendbar und dann noch recht ungenau.High-voltage cable ES is known, the insulation of high-voltage cables in order to improve the dielectric strength under pressure and thereby the Pressure medium from the insulation by a pressure medium impermeable, but to separate pressure-resilient layer. A stress on the pressure medium by the electric field can be avoided by making this layer conductive. as Pressure medium can be a gas or a liquid. The choice of Substances that come into question as pressurized gas or liquid are responsible for the pressure effect irrelevant. It is now for the question of service life and operational safety such cables of the utmost importance that any leaks occurring in the Pressure lines can be found and eliminated quickly. To locate such No electrical Meßv experience are known, as they are in the cable fault location are otherwise common. Pressure gradient measurements can only be used for gross errors and then still quite imprecise.

Erfindungsgemäß wird durch eine Zeeignete Auswahl des Druckmittels ein leichtes Auffinden des Fehlerorts in der Druckleitung ermöglicht. Als Druckmittel werden solche Stoffe gewählt, die sich durch besonders starken Geruch oder Färbekraft auszeichnen, oder diese Stoffe werden dem an sich neutralen Druckmittel zugesetzt. Durch das Ausströmen dieser Stoffe aus der Druckleitung an der Fehlerstelle kann der Fehlerort in der Druckleitung ohne Schwierigkeit gefunden werden. Es eignen sich für die Zwecke der Erfindung beispielsweise Schwefelwasserstoff, Moschus, Merkaptan oder Fluoreszein, die dem Druckgas oder der Druckflüssigkeit zugesetzt werden. Schließlich kann das Druckmittel auch solche Stoffe enthalten, die bei Berührung mit dem Erdreich oder der Luft Verfärbungen oder Nebel bilden. Die beschriebene Maßnahme ermöglicht die Auffindung kleinster Undichtigkeiten in den Druckleitungen. Gegebenenfalls können zum leichteren Auffinden des Fehlerorts Hunde verwendet werden, falls die Druckleitung mit einem Druckmittel angefüllt ist, dem stark riechende Bestandteile zugemischt sind.According to the invention, a suitable selection of the pressure medium allows easy finding of the fault location in the pressure line. As a means of pressure those substances are chosen that have a particularly strong odor or color strength or these substances are added to the neutral pressure medium. The leakage of these substances from the pressure line at the point of failure can the fault location in the pressure pipe can be found without difficulty. It suit For the purposes of the invention, for example, hydrogen sulfide, musk, mercaptan or fluorescein, which are added to the pressurized gas or the pressurized fluid. In the end The pressure medium can also contain substances that come into contact with the ground discoloration or mist in the air. The measure described enables the detection of the smallest leaks in the pressure lines. If necessary, can Dogs can be used to make it easier to find the location of the fault if the pressure pipe is filled with a pressure medium to which strong-smelling ingredients are added are.

Claims (1)

PATENTANSPRUCH: Hochspannungskabel, dessen Isolation unter Druck steht und von dem Druckmittel durch eine undurchlässige, aber drucknachgiebige Schicht getrennt ist, dadurch gekennzeichnet, daß das druckausübende Mittel stark riechende, stark fär bende, ätzende oder nebelbildende Bestandteile enthält. PATENT CLAIM: High-voltage cable, the insulation of which is under pressure and separated from the pressure medium by an impermeable, but pressure-resilient layer, characterized in that the pressure-exerting agent contains strong smelling, strong staining, caustic or mist-forming components.
DE1930519557D 1930-01-19 1930-01-19 High voltage cables Expired DE519557C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE519557T 1930-01-19

Publications (1)

Publication Number Publication Date
DE519557C true DE519557C (en) 1931-03-02

Family

ID=6550576

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930519557D Expired DE519557C (en) 1930-01-19 1930-01-19 High voltage cables

Country Status (1)

Country Link
DE (1) DE519557C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152560B (en) * 1960-03-04 1963-08-08 Siemens Ag Device for checking the tightness of longitudinally sealed cable sheaths by means of a test gas introduced into the cable core
DE1273279B (en) * 1966-07-01 1968-07-18 Clinton Orrin Bunn Method and device for monitoring leaks in underground pipelines surrounded by a jacket pipe
US5017617A (en) * 1988-11-22 1991-05-21 Saraya Kabushiki Kaisha Disinfectant composition for medical use
DE102009047745A1 (en) * 2009-12-09 2011-06-16 Prüftech GmbH Cable with indicator material to detect damage

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152560B (en) * 1960-03-04 1963-08-08 Siemens Ag Device for checking the tightness of longitudinally sealed cable sheaths by means of a test gas introduced into the cable core
DE1273279B (en) * 1966-07-01 1968-07-18 Clinton Orrin Bunn Method and device for monitoring leaks in underground pipelines surrounded by a jacket pipe
US5017617A (en) * 1988-11-22 1991-05-21 Saraya Kabushiki Kaisha Disinfectant composition for medical use
DE102009047745A1 (en) * 2009-12-09 2011-06-16 Prüftech GmbH Cable with indicator material to detect damage
US9472321B2 (en) 2009-12-09 2016-10-18 Pruftech Gmbh Cable comprising indicator material for detecting damage control

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