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
Links
- 239000000463 material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 239000004848 polyfunctional curative Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000003995 emulsifying agent Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators 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
- H01B3/44—Insulators 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
- H01B3/442—Insulators 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/003—Filling materials, e.g. solid or fluid insulation
Landscapes
- 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)
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)
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 |
-
1967
- 1967-03-10 DE DE19671690389 patent/DE1690389B2/en not_active Ceased
-
1968
- 1968-03-06 SE SE02951/68A patent/SE328047B/xx unknown
- 1968-03-06 NL NL6803179A patent/NL6803179A/xx unknown
- 1968-03-08 NO NO90868A patent/NO125705B/no unknown
- 1968-03-08 BE BE711940D patent/BE711940A/xx unknown
- 1968-03-08 FR FR1556683D patent/FR1556683A/fr not_active Expired
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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