NO841450L - UNDER-CABLE SKATE BOX - Google Patents
UNDER-CABLE SKATE BOXInfo
- Publication number
- NO841450L NO841450L NO84841450A NO841450A NO841450L NO 841450 L NO841450 L NO 841450L NO 84841450 A NO84841450 A NO 84841450A NO 841450 A NO841450 A NO 841450A NO 841450 L NO841450 L NO 841450L
- Authority
- NO
- Norway
- Prior art keywords
- cable
- housing
- epoxy resin
- sections
- junction box
- Prior art date
Links
- 239000003822 epoxy resin Substances 0.000 claims description 15
- 229920000647 polyepoxide Polymers 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- 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
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
-
- 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
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
- H02G15/12—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes for incorporating transformers, loading coils or amplifiers
- H02G15/14—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes for incorporating transformers, loading coils or amplifiers specially adapted for submarine cables
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Cable Accessories (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Description
Foreliggende oppfinnelse vedrører en husenhet for under-vannskabelskjøter. The present invention relates to a housing unit for underwater cable joints.
'Betegnelsen "kabel" brukes nedenfor om elektriske kabler, fiberoptiske kabler, slangebunter eller en eller annen kom-binasjon av dem. En enkelt kabel kan f.eks. omfatte slanger som fører hydrauliske fluider, isolerte metalliske ledere for elektrisk strømforsyning og metalliske ledere eller op-tiske fibre for kommunikasjonsformål. Kabelen omfatter også utvendige armerings tråder eller bånd. The term "cable" is used below to refer to electrical cables, fiber optic cables, hose bundles or some combination thereof. A single cable can e.g. include hoses carrying hydraulic fluids, insulated metallic conductors for electrical power supply and metallic conductors or optical fibers for communication purposes. The cable also includes external reinforcing wires or bands.
Slike kabler, og spesielt skjøter i slike kabler, må motstå betydelige påkjenninger i lengderetning når de legges ut i åpen sjø eller senkes fra oljeplattformer, samtidig som de må motstå svært høye komprimeringskrefter når de er på plass på store dyp. Such cables, and especially joints in such cables, must withstand significant stresses in the longitudinal direction when they are laid out in the open sea or lowered from oil platforms, while at the same time they must withstand very high compression forces when they are in place at great depths.
Tradisjonelt er sk j øtebok.ser for unndervannskabler blitt fremstilt av maskinbehandlede stålrør, san (om nødvendig) omfatter stålarmeringsforankringer, justerbare belastnings-krager,. gjengede endekapper og fylles med fyllmasse etter at skjøten er opprettet og huset er festet på plass. Strekk-belastningen på skjøten overføres fra armeringen, -via be-las tningskragéne til stålrøret. Fyllmassen sørger for å hindre fuktighet som måtte trenge inn i røret i å nå frem til kabelskjøtene i husenheten. Slike stålhus er kostbare og tunge å håndtere. Traditionally, junction boxes for underwater cables have been manufactured from machine-treated steel tubes, which (if necessary) include steel reinforcement anchorages, adjustable load collars. threaded end caps and filled with filler after the joint has been created and the housing is fixed in place. The tensile load on the joint is transferred from the reinforcement via the load collars to the steel pipe. The filler ensures that moisture that may penetrate the pipe is prevented from reaching the cable joints in the housing unit. Such steel houses are expensive and heavy to handle.
Ifølge foreliggende oppfinnelse er det tilveiebrakt en skjø-teboks for undervannskabel som omfatter en hul, rørformet struktur og erkarakterisert vedat minst to husendeseksjoner hver er utformet san et hult rør av filamentviklet epoksyharpikskompositt, hvor hver endeseksjon er utformet med et innvendig avsmalnende endeparti, hvor nabo-husseksjoner forbindes ved heftforankrede skjøter mellom ikke avsmalnende partier av seksjonene, hvor minst en husseksjon er forsynt med et påfyllingshull, gjennom hvilket det fullførte hus fylles med en epoksyharpiks med fyllstofftilsetning. Ifølge oppfinnelsen tilveiebringes også en fremgangsmåte for a skjøte en armert undervannskabel i et rørformet hus, som deretter.blir fylt med en epoksyharpiks-fyllstoff-forbindelse. Denne fremgangsmåte utmerker seg ved at den omfatter ut-spiling og deformering av endene av armeringstrådene eller båndene nær hver kabelende, omslutting av kabelskjøten med et rørformet, filamentviklet epoksyharpikshus som har innvendig avsmalnende endepartier som passer tett inn i kabelens ytre mantel og fylling av huset med epoksyharpiksforbindelse med fyllstofftilsetning. According to the present invention, a junction box for underwater cable is provided which comprises a hollow, tubular structure and is characterized in that at least two housing end sections are each designed like a hollow tube of filament-wound epoxy resin composite, where each end section is designed with an internally tapered end portion, where neighboring housing sections are connected by adhesive anchored joints between non-tapered portions of the sections, where at least one housing section is provided with a filling hole, through which the completed housing is filled with an epoxy resin with filler addition. According to the invention, a method is also provided for splicing an armored underwater cable in a tubular housing, which is then filled with an epoxy resin-filler compound. This method is distinguished by the fact that it includes flaring out and deforming the ends of the reinforcing wires or tapes near each cable end, enclosing the cable joint with a tubular, filament-wound epoxy resin housing having internally tapered end portions that fit snugly into the cable's outer sheath, and filling the housing with epoxy resin compound with filler addition.
Et utførelseseksempel av oppfinnelsen skal nå beskrives un-der henvisning til vedlagte tegning, som avbilder et leng-desnitt gjennom en halvdel av en undervannskabelskjøt. An embodiment of the invention will now be described with reference to the attached drawing, which depicts a longitudinal section through one half of an underwater cable joint.
Kabelen som skal skjøtes er illustrert som en hydraulisk slangebunt som omfatter slangene 1, 2, som er innesluttet i ■• polyetylenremmer som i sin tur er viklet med armeringstråder 4: av' stål. Til slutt er armeringen dekket med en ytre poly-etylenmantel 5. The cable to be spliced is illustrated as a hydraulic hose bundle comprising the hoses 1, 2, which are enclosed in ■• polyethylene straps which in turn are wound with reinforcing wires 4: of' steel. Finally, the reinforcement is covered with an outer polyethylene sheath 5.
Hver kabel er akeuss inn gjennom en respektive halvdel av filamentviklet glass-epoksyharpiks husparti 10. Husseksjonen har rørformet tverrsnitt, hvor hoveddelen har større diameter enn den utvendige diameter av kabelens yttermantel 5. Hver seksjon har et innad avsmalnende endeparti 10a, som passer tett over kabelens yttermantel 5. Each cable is routed through a respective half of filament-wound glass-epoxy resin housing section 10. The housing section has a tubular cross-section, the main section having a larger diameter than the outer diameter of the cable's outer jacket 5. Each section has an inwardly tapered end section 10a, which fits snugly over the cable's outer mantle 5.
For opprettelse av en kabelskjøt, blir hver kabelende først skrudd gjennom en varmekrympbar hylse 11, en harpiksbundet, ringformet fiberpropp lia (SRBF) og en ringformet "U"-ring tetning 11b. Husseksjonen 10 blir deretter skjøvet over kabel enden. Den ytre mantel 5 blir skrelt av over en lengde, slik at armeringen 4 blir blottlagt. Armeringstrådene blir spredt utover og endene 4a av trådene blir tilfeldig deformert, f.eks. ved riving og krølling. Alternativt kan tråden-,dene forbli rette eller bare bli sandblåst. Også de inre remmer 3 blir skrelt tilbake et mindre stykke, slik at de enkelte slangeender 1, 2 blir blottlagt. Hver slangeende forsynes med en gjenget kopling 12 hhv 13. En stabiliseren-de metallhylse 14 blir presset over indre remlag 3 og en sir-kulær klemme 15 blir festet til denne ved hjelp av skruer 16. Kompresjon av en ringformet tetningsring 17 oppnås mellom hylsen og klemmeflensene når skruene 16 skrues til. Til slutt kan en varmekrympende slange anbringes over enden av de indre remmer 3 og klemmen 15.Kabelenden er nå rede for skjø-ting medsen annen, tilsvarende istandsatt kabelende. To create a cable joint, each cable end is first threaded through a heat-shrinkable sleeve 11, a resin-bonded annular fiber plug 11a (SRBF) and an annular "U" ring seal 11b. The housing section 10 is then pushed over the cable end. The outer sheath 5 is peeled off over a length, so that the reinforcement 4 is exposed. The reinforcing wires are spread out and the ends 4a of the wires are randomly deformed, e.g. by tearing and curling. Alternatively, the threads can remain straight or simply be sandblasted. The inner straps 3 are also peeled back a small distance, so that the individual hose ends 1, 2 are exposed. Each hose end is provided with a threaded coupling 12 or 13. A stabilizing metal sleeve 14 is pressed over the inner belt layer 3 and a circular clamp 15 is attached to this by means of screws 16. Compression of an annular sealing ring 17 is achieved between the sleeve and the clamping flanges when the screws 16 are tightened. Finally, a heat-shrinkable tube can be placed over the end of the inner straps 3 and the clamp 15. The cable end is now ready for splicing with the other, correspondingly repaired cable end.
De to kabelender som skal forbindes, føres sammen og tilsvarende,; slangekoplinger 12, 13 blir skrudd sammen. De respektive husseksjoner 10 blir deretter skjøvet sammen butt-i-butt, etter at en innvendig forbindelseshyIse 19 er innført i den ene husseksjonen. Husseksjonene festes sammen og til forbindelseshyIsen ved en klebrig bindende lappskjøt 10c, hjulpet av buttskjøten 10b. SRBF-proppen lia skyves inn i den maskinbearbeidede fordypning i husendeseksjonen for derved å trykke sammen "U"-ringtetningen 11b. Den varme-krympbare hylse 11 beveges deretter på plass over proppen og varmes opp for å danne en tett, krympepasset tetning over enden av huset og en del av kabelen. Alternativt kan hele skjøtboksen innkapsles i en varmekrympet dekkmantel. The two cable ends to be connected are brought together and correspondingly,; hose connections 12, 13 are screwed together. The respective housing sections 10 are then pushed together butt-in-butt, after an internal connecting housing 19 has been introduced into one housing section. The housing sections are attached together and to the connecting housing by an adhesive bonding patch joint 10c, aided by the butt joint 10b. The SRBF plug 11a is pushed into the machined recess in the housing end section to thereby compress the "U" ring seal 11b. The heat-shrinkable sleeve 11 is then moved into place over the plug and heated to form a tight, shrink-fit seal over the end of the housing and part of the cable. Alternatively, the entire junction box can be encased in a heat-shrinkable cover jacket.
Når samtlige, ovennevnte operasjoner ér fullført, blir hu-sets indre fylt med en epoksyharpiksforbindelse med fyll-stoff tilsetning via påfyllingshuller 10d i husseksjonene 10, som virker som støpeform. When all the above-mentioned operations are completed, the inside of the housing is filled with an epoxy resin compound with filler addition via filling holes 10d in the housing sections 10, which act as moulds.
Resultatet er en sterk, lett kabelskjøt som er motstands-dyktig mot trykk og ugjennomtrengelig overfor inntrengning av fuktighet. Lengsgående strekkspenning i kabelen blir via de utspilte og deformerte armerings tråder overført til epoksyharpiks-fylistoff et innenfor de avsmalnende eller ko-niske endeformer. Noe av belastningen blir overført videre til husseksjonene 10 og via den bundne skjøt 10c til den andre seksjon og deretter tilbake gjennom fyllstoffet til armerings trådene på den andre.kabelende. The result is a strong, lightweight cable joint that is resistant to pressure and impervious to the ingress of moisture. Longitudinal tensile stress in the cable is transferred via the expanded and deformed reinforcement threads to the epoxy resin filler within the tapered or conical end forms. Some of the load is transferred further to the housing sections 10 and via the bonded joint 10c to the second section and then back through the filler to the reinforcing wires on the other cable end.
Produksjonen av husendeseksjonene 10 er rimelig, sammenlig-net med de tradisjonelle stålhus. Hver endeseksjon kan lett fremstilles på en avtagbar spindel, og.den eneste form for vmaskinbearbeiding som siden kreves er på skjøtområdene for sikring av gode skjøter og på det avsmalnende endeparti for opprettelse av, en god tilpasning for "U"-ring tetningen. The production of the housing end sections 10 is reasonable, compared to the traditional steel housings. Each end section can be easily fabricated on a removable mandrel, and the only machining required thereafter is on the joint areas to ensure good joints and on the tapered end portion to create a good fit for the "U" ring seal.
Den ferdige skjøt er svært sterk. Typiske testtall for en skjøt av'en kabel med en diameter på 12,70 cm og med et hus med en total lengde på 121,92 cm viser at den motstår minst en strekkspenning på 3 0 tonn. The finished joint is very strong. Typical test figures for a splice of a cable with a diameter of 12.70 cm and a housing with a total length of 121.92 cm show that it resists at least a tensile stress of 30 tons.
Alternativt til et hus i to deler som vist i tegningen, kan det brukes et hus som f.eks. består av tre deler. Et sent-ralt, glatt rørparti kan forbindes med to avsmalnende endepartier. En slik konstruksjon er vist i figuren med en ma-skimbearbéidet lappskjøt 10e mellom det sentrale parti og det avsmalnende endeparti. Den kan forsterkes med en skjøt-<1>' hylse 18b hvis det er ønsket (bare vist med stiplet kontur). Dette gjør det mulig å utarbeide et mangfoldig system med felles endepartier som kan benyttes med sentrale partier med en rekke forskjellige lengder. As an alternative to a house in two parts as shown in the drawing, a house such as e.g. consists of three parts. A central, smooth pipe section can be connected to two tapered end sections. Such a construction is shown in the figure with a machined lap joint 10e between the central part and the tapered end part. It can be reinforced with a splicing sleeve 18b if desired (only shown with dashed outline). This makes it possible to prepare a diverse system with common end parts that can be used with central parts of a number of different lengths.
Skjønt det er. nevnt glassfilamentforsterkning av epoksy-harpiksf orbindelsen, kan andre fiberholdige materialer og-så benyttes, f. eks. KEVLAR (reg. varemerke) , karbonfibre, polyester m.v. Filamentenes legningsvinkel kan også være forskjellig i forskjellige deler av røret for å gi den nød-vendige strekk/løkkespennings-adferd i forskjellige stil-linger. Although it is. mentioned glass filament reinforcement of the epoxy-resin compound, other fiber-containing materials can also be used, e.g. KEVLAR (reg. trademark), carbon fibres, polyester etc. The laying angle of the filaments can also be different in different parts of the tube to provide the necessary tensile/loop tension behavior in different positions.
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08310159A GB2138088A (en) | 1983-04-14 | 1983-04-14 | Submarine cable joint housing |
Publications (1)
Publication Number | Publication Date |
---|---|
NO841450L true NO841450L (en) | 1984-10-15 |
Family
ID=10541113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO84841450A NO841450L (en) | 1983-04-14 | 1984-04-11 | UNDER-CABLE SKATE BOX |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR2544562A1 (en) |
GB (1) | GB2138088A (en) |
NO (1) | NO841450L (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8620286D0 (en) * | 1986-08-20 | 1986-10-01 | Plessey Co Plc | Hybrid connector |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB874895A (en) * | 1957-02-13 | 1961-08-16 | Silec Liaisons Elec | Improvements in or relating to the protection of junctions between electric cables |
GB1102837A (en) * | 1966-01-13 | 1968-02-14 | Pirelli General Cable Works | Improvements in or relating to the jointing of electric cables |
DE2448705C2 (en) * | 1974-10-12 | 1982-01-21 | Felten & Guilleaume Carlswerk AG, 5000 Köln | Termination insulator set for electrical power cables |
GB2059691A (en) * | 1979-09-29 | 1981-04-23 | Pirie J K | Underwater cable terminations |
-
1983
- 1983-04-14 GB GB08310159A patent/GB2138088A/en not_active Withdrawn
-
1984
- 1984-04-10 FR FR8405673A patent/FR2544562A1/en not_active Withdrawn
- 1984-04-11 NO NO84841450A patent/NO841450L/en unknown
Also Published As
Publication number | Publication date |
---|---|
GB2138088A (en) | 1984-10-17 |
FR2544562A1 (en) | 1984-10-19 |
GB8310159D0 (en) | 1983-05-18 |
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