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NO125705B - - Google Patents

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Publication number
NO125705B
NO125705B NO90868A NO90868A NO125705B NO 125705 B NO125705 B NO 125705B NO 90868 A NO90868 A NO 90868A NO 90868 A NO90868 A NO 90868A NO 125705 B NO125705 B NO 125705B
Authority
NO
Norway
Prior art keywords
sleeve
stated
mass
cavity
sheath
Prior art date
Application number
NO90868A
Other languages
Norwegian (no)
Inventor
H Dagefoerde
Original Assignee
Ver Draht & Kabelwerke 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 Ver Draht & Kabelwerke Ag filed Critical Ver Draht & Kabelwerke Ag
Publication of NO125705B publication Critical patent/NO125705B/no

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/442Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from aromatic vinyl compounds
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00Cable fittings
    • H02G15/003Filling materials, e.g. solid or fluid insulation

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Processing Of Terminals (AREA)
  • Cable Accessories (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Description

Fremgangsmåte til fremstilling av en kabelskjøtemuffe. Method for manufacturing a cable joint sleeve.

Oppfinnelsen angår en fremgangsmåte til fremstilling av en kabelskjotemuffe. Muffen har et fast mantelparti og omgir spleisestedet for elektriske kabler og ledninger. Der er kjent å beskytte spleisestedene mot ytre, for det meste atmosfæriske innflytelser ved hjelp av et beskyttelseshylster, muffelegemet. Spleisestedet for lederne ligger enten i hulrommet i det omgivende beskyttelseshylster eller de innleires i en stivnende masse, f.eks. stopeharpiks. The invention relates to a method for producing a cable joint sleeve. The sleeve has a fixed sheath part and surrounds the splice point for electrical cables and wires. It is known there to protect the splicing points against external, mostly atmospheric influences by means of a protective sleeve, the muffle body. The splice point for the conductors is either in the cavity in the surrounding protective sheath or they are embedded in a solidifying mass, e.g. stop resin.

En muffespleis som ligger i et hulrom i det omgivende beskyttelseshylster, har den fordel at det ved omkoblingsarbeider er mulig å åpne det ytre muffelegeme påny og straks gjore skjotestedet fritt tilgjengelig. Når arbeidet er ferdig, kan muffelegemet, resp. beskyttelseshylsteret, lett lukkes igjen. Ulempen ved denne form for skjotemuffe ligger i at f.eks. vann som måtte trenge inn, også kan komme inn til kabelkjernen og dermed sette kabelanlegget ut av drift .v A sleeve splice that is located in a cavity in the surrounding protective sleeve has the advantage that, during switching work, it is possible to open the outer sleeve body again and immediately make the joint freely accessible. When the work is finished, the muffle body, resp. the protective sleeve, easily closed again. The disadvantage of this type of joint sleeve is that e.g. water that may penetrate can also get to the cable core and thus put the cable system out of service .v

Ved innleiring i stopeharpiks stoter man på vanskeligheter Difficulties are encountered when embedding in stope resin

ved reparasjons- og omkoblingsarbeider som dem der ofte kreves ved kommunikasjonskabler, forsåvidt som stopeharpiksen hefter meget fast til de enkelte ledere og ikke lenger kan fjernes fra disse uten å skade dem. Når slike arbeider skal utfores, må man derfor forst fjerne hele skjoten og så fremstille den påny. Fordélen ved innleiring i stopeharpiks består i at skjotemuffen virker som propp og dermed hindrer vann som måtte trenge inn i kabelen, i å flyte videre inn i kabelkjernens hulrom. during repair and switching work such as those often required for communication cables, provided that the stop resin adheres very firmly to the individual conductors and can no longer be removed from these without damaging them. When such work is to be carried out, one must therefore first remove the entire joint and then prepare it again. The advantage of embedding in stop resin is that the splicing sleeve acts as a stopper and thus prevents water that might penetrate the cable from flowing further into the cavity of the cable core.

Til grunn for den foreliggende oppfinnelse ligger nu den oppgave å skaffe en skjotemuffe for elektriske kabler hvor fordelene ved de hittil kjente metoder blir bibeholdt, men deres ulemper unngås. Denne oppgave blir lost ved at der i det av mantelen omgitte hulrom gjennom en åpning i mantelen fylles inn et materiale som forst oker sitt volum og deretter stivner til en fast masse. Ved hjelp av denne masse, hvor tidspunktet for volumøkningen og tidspunktet for stiv-ningen kan fastlegges på forhånd, oppnår man den fordel at de frie hulrom i splelserommet blir utfylt med en celleformet stopemasse som allikevel lett kan fjernes fra kabelens ledere. En ytterligere fordel ved oppfinnelsen består i at der ved hjelp av den innfylte masse kan gjennomfores en ekstra prove på tetthet for muffen. Fyllmassens komponenter kan innstilles slik at der, når det endelige volum nås, oppstår et betraktelig overtrykk i det indre av kabelmuffen så fyllmassen trenger inn i de minste kilerom. På grunn av overtrykket prover man muffesommene. Utettheter i muffelegemet og arbeidsfeil ved muffesommene gir seg da tilkjenne ved utsivende fyllmasse. The present invention is now based on the task of providing a splicing sleeve for electric cables where the advantages of the previously known methods are retained, but their disadvantages are avoided. This task is solved by filling the cavity surrounded by the mantle through an opening in the mantle with a material that first increases its volume and then solidifies into a solid mass. With the help of this mass, where the time for the increase in volume and the time for the stiffening can be determined in advance, one achieves the advantage that the free cavities in the splicing space are filled with a cell-shaped stoping mass which can nevertheless be easily removed from the cable's conductors. A further advantage of the invention consists in the fact that with the help of the filled mass, an additional test of tightness can be carried out for the sleeve. The components of the filler can be adjusted so that, when the final volume is reached, a considerable overpressure occurs in the interior of the cable sleeve so that the filler penetrates into the smallest wedge spaces. Because of the overpressure, the sleeve seams are tested. Leakages in the socket body and malfunctions at the socket joints are then indicated by oozing filler.

Disse feil kan så også fjernes etterpå. Det er imidlertid også These errors can then also be removed afterwards. However, it is also

mulig å la de utette steder avtettes av fyllmassen. possible to let the leaky places be sealed with the filling compound.

I en utforelse av oppfinnelsens gjenstand kan det materiale som skal fylles inn i muffens hulrom, være en stopeharpiks med tilsatt herdér og esningsmiddel. Tidspunktet for oppskumningen av denne masse kan fastlegges noyaktig på forhånd ved tilsvarende avpasning. Takket være herderen stivner den således innfylte masse etter skumningsprosessen, og det forbigående overtrykk går da tilbake. In one embodiment of the object of the invention, the material to be filled into the socket's cavity can be a stop resin with added hardener and emulsifier. The time for the foaming of this mass can be determined precisely in advance by corresponding adjustment. Thanks to the hardener, the thus filled mass hardens after the foaming process, and the transient overpressure then returns.

Hele massen blir på grunn av herderen mer stabil og får ved utherd-ningen en ytterst fast form, som imidlertid i tilfellet av ombygnings-arbeider på spleisestedet når som helst lett kan fjernes fra de enkelte ledere. Den celleformede masse har slik beskaffenhet at den ved fornyet åpning av kabelskjotemuffen lett kan skjæres med kniv, skrapes av eller til og med smuldres opp med hånden fra muffespleisen. Due to the hardener, the entire mass becomes more stable and takes on an extremely firm form during curing, which, however, in the case of reconstruction work at the splice site, can be easily removed from the individual conductors at any time. The cellular mass is of such a nature that when the cable joint sleeve is opened again, it can easily be cut with a knife, scraped off or even crumbled by hand from the sleeve joint.

I en ytterligere utforelse av oppfinnelsesgjenstanden kan der som materiale også anvendes en fast masse i pulverform eller småkornet form, som skummer opp ved oppvarmning og således likeledes fyller ut hulrommet innenfor mantelen og også trenger inn i de minste mellomrom mellom lederne. En slik masse er f.eks. kjent under betegnelsen polystyrol. In a further embodiment of the object of the invention, a solid mass in powder or granular form can also be used as material, which foams up when heated and thus likewise fills the cavity within the mantle and also penetrates into the smallest spaces between the conductors. Such a mass is e.g. known under the name polystyrene.

En tredje mulighet for anvendelse av en utfyllingsmasse i hen-hold til oppfinnelsen består i at der anvendes et materiale som skummes opp ved hjelp av trykkluft og fylles inn i kabelmuffens hulrom under trykk. Også denne masse stivner etter noen tid. På grunn av innsproytningstrykket kan der her også foretas tetthetsprovning. Den åpning som til å begynne med er tilstede i mantelen for å gjore det mulig å fore fyllmassen inn, kan lukkes umiddelbart etter fyllingen. Til dette kan man f.eks. benytte et klebebånd. Det er imidlertid også mulig å la åpningen tettes av selve den utsvellende fyllmasse. A third possibility for using a filling compound according to the invention consists in using a material that is foamed up with the help of compressed air and filled into the cavity of the cable sleeve under pressure. This mass also hardens after some time. Due to the injection pressure, tightness testing can also be carried out here. The opening which is initially present in the mantle to make it possible to insert the filling material can be closed immediately after filling. For this, you can e.g. use an adhesive tape. However, it is also possible to let the opening be sealed by the swelling filler itself.

Claims (5)

1. Fremgangsmåte til fremstilling av en kabelskjotemuffe hvor spleisestedet er omgitt av en fast mantel, karakterisert ved at der i det av mantelen omgitte hulrom gjennom en åpning i mantelen fylles inn et materiale som forst oker sitt volum og deretter stivner til en fast masse.1. Method for producing a cable joint sleeve where the splice is surrounded by a solid sheath, characterized in that a material is filled into the cavity surrounded by the sheath through an opening in the sheath, which first increases its volume and then solidifies into a solid mass. 2. Fremgangsmåte som angitt i krav 1, karakterisert ved at der som materiale anvendes en stopeharpiks med tilsatt herder og esningsmiddel.2. Method as stated in claim 1, characterized in that a stop resin with added hardener and emulsifier is used as material. 3. Fremgangsmåte som angitt i krav 1, karakterisert ved at der som materiale anvendes en ved oppvarmning oppskummende fast masse i pulverform eller småkornet form.3. Method as stated in claim 1, characterized in that a solid mass in powder form or small-grained form that foams up when heated is used as material. 4. Fremgangsmåte som angitt i krav 1, karakterisert ved at der til å fylle opp hulrommet anvendes et med trykkluft oppskummet materiale.4. Method as stated in claim 1, characterized in that a material foamed with compressed air is used to fill up the cavity. 5. Fremgangsmåte som angitt i et av kravene 1-4, karakterisert ved at åpningen i mantelen lukkes etter innfyllingen av materialet..5. Method as stated in one of claims 1-4, characterized in that the opening in the mantle is closed after filling in the material.
NO90868A 1967-03-10 1968-03-08 NO125705B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV0033204 1967-03-10

Publications (1)

Publication Number Publication Date
NO125705B true NO125705B (en) 1972-10-16

Family

ID=7587930

Family Applications (1)

Application Number Title Priority Date Filing Date
NO90868A NO125705B (en) 1967-03-10 1968-03-08

Country Status (6)

Country Link
BE (1) BE711940A (en)
DE (1) DE1690389B2 (en)
FR (1) FR1556683A (en)
NL (1) NL6803179A (en)
NO (1) NO125705B (en)
SE (1) SE328047B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1005538A (en) * 1972-07-24 1977-02-15 Minnesota Mining And Manufacturing Company Re-enterable splice enclosure
US3955043A (en) * 1974-04-11 1976-05-04 General Electric Company High voltage cable splice using foam insulation with thick integral skin in highly stressed regions
US3985951A (en) * 1975-07-10 1976-10-12 Niemand Bros. Inc. Electrical insulator including a polymeric resin foam forming composition and method of insulation
AT361560B (en) * 1979-05-17 1981-03-25 Laha Manfred CABLE SLEEVE FOR ELECTRICAL CABLES

Also Published As

Publication number Publication date
SE328047B (en) 1970-09-07
FR1556683A (en) 1969-02-07
BE711940A (en) 1968-07-15
NL6803179A (en) 1968-09-11
DE1690389A1 (en) 1971-05-27
DE1690389B2 (en) 1973-06-28

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