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    • 专利摘要:

    公开号:SE1400480A1
    申请号:SE1400480
    申请日:2014-10-14
    公开日:2014-12-04
    发明作者:Andreas Farkas
    申请人:Abb Technology Ltd；
    IPC主号:
    专利说明:

    14. OCT. 2014 8:54 ABAB105 NO. 991 P.forms an insulatíon system for the conductor, and moving the power cablecore through a cooling pipe, which cooling pipe de fl nes a longltudinal spacefor reeeiving the power cable core, and which longltudinal space contains apolar- oil that has a water content of at most 100 parts per million, ppm, forcooling the insulation system, and which longitudinal space is oxygen- fi- ee.
    By means of the polar oil which has no or essentially no water content, thenegative in fl uence on the electrical properties of the insulation system may beFurthermore, thermooxidative degradation is eliminated duringthe process since the cooling environment is oxygen-free.
    Polar oil is compatible with the outer layer, typically a semiconductor layer,and any other layer of the insulation system.
    Preferably, the polar oil uiilised is an environmental fñendly liquid.
    According to one embodiment the cooling pipe comprises a sealing systemarranged to maintain the polar oil in the longitudinal space.
    According to one embodiment polar oil has an over-pressure relative toambient pressure. Thereby, the sagging effect due to gravity may beoverwmeïheoverpressureofthepohroilminimisestheriskwithrespectmcont-action voids.
    Accordingto one embodhnentthe overpressure is at least 1.5 har.
    According to one embodirnent the polar o fl is a polyallqrlene glycol oil or asílieon oil.
    According to one embodiment the cooling pipe forms part of one of a verticalcooling arrangement, a horizontal ooolíng arrangement and a catenarycooling armngement.
    Aocordingto asecondaspectofthepresentdisclosurethereis providedanarrangement for manufacturing a thermoplastic power cable oomprlsíng apower cable core, wherein the arrangement includes: an extruder ananged514. OCT. 2014 8:54 ABB ABABB AB1020NO. 991 P.to apply heated insula fi ng material onto a conductor to form the power cablecore, where the insulating material forms an insulatlon system for theconductor, and a cooling pipe which de fi nes a longltudinal space for receivingthe power cable core, wherein the arrangement is arranged to move thepower cable core through the cooling pipe through the longitudinal space,wherein the longitudinal space contains a pclar oil that hm a water content ofat most 100 parts per million, ppm, for cooling the insulation system, andwhich longitudinal space is oxygen- fi ee.
    According to one embodiment the coollng pipe wmprises a sealing system tomaintainthepolaroilinthelongitudinalspace.
    According to one ernbodiment the polar oil has an overpressure relative toambient pressure.
    According to one embodiment the cverpressure is at least 1.5 har.
    According to one emhodiment the polar oil is a polyalltylene gly oil ol oil or asilicon oil.
    According to one embodiment the cooling pipe forms part of one of a verticalcooling arrangement, a horizontal cooling arrangement and a catenarycooling arrangement.
    Generally, allterms usedintheclaitns are tobe interpreted accordingtotheirordinary meaning in the technical fi eld, unless explicitly de fi ned otherwiseherein. All references to ”a / an / the element, apparatus, component, means,etc. are to be interpreted openly as referrlng to at least one instance of theelement, apparatus, component, means, etc., unless explicitly statedotherwise.
    LETTER DESCRIPTION OF THE DRAWINGSThe speci fi c embodlrnents of the inventive concept will nowbe described, byway of example, with reference to the accompanying clrawings, in which:614. OCT. 2014 8:541030NO. 991 P. 7Fig. 1 is a schematic view of an an-angement for manufacturing a power cable;andPig. 2 shows a method of manufacturing a power cable.
    DEIAIIED DESCRIPTIONThe inven concept ve concept will now be described more fully hereínafter withreference to the accompaniment drawlngs, ln which exemplifyingembodiments are shown. The inventive concept may, however, be embodiedin many different forms and should not be construed as limibedto theembodiments set forth heroin; rather, these embodiments are provided byway of example so that this dieclomre will be thorough and complete, andwillfullyconveythescopeofthe inventive conceptto those sldlledintheart.like numbers nefer to like elements throughout the description.
    Fig. 1 depicls an arrangement 1 for manufacturing a power cable. Thearrangement 1 oomprises an ertruder 3. The exuuder 3 ie arranged to applyheated, molten, insula fi ng material 5 onto a conductor 7 to form a powercable core 9, shown with dashed lines in Flg. 1. The insulating material 5forms an ínsulation system for the conductor 7. The ínsralating material mayoomprise semieondnctor material and / or thennoplastlc material. Theextrusion may involve applying several layer-s of insulating material.
    The arrangement 1 comprises a cooling pipe 11 which extends longitudinallyspace 13 for receivlng the power cable core 9. The longirudinal space extendsfrom one end of the cooling pipe u to its other end such that a power cablecore 9 can move through the oooling pipe 11. The arrangement 1 is arrangedto move the power cable core 9 through the cooling pipe 11.
    The longltudlnal space 13 contains a polar oil 15 that has a water content of atmost 100 parts per million, ppm, for cooling the insula fi on system.
    Preferably, the polar oil 15 has a water content of less than 25 ppm.
    According to one variation the polar oil 15 has no water content at all. TheIongitudinal space 13 is oxygen- fi ee. According to one variation, thelongitudinalspace 13 mayforthispurposecontain ages otherthan oxygen,14. OCT, 2014 8:541020GFLC / IP Ü NO. 991 P.
    ABB ABABB AB GFLC / IPfor example nitrogen, in any voids in the longitudinal space 13 not fi lled withthepolaroil 15andthepower cablecoreg.
    According to one variation, the cooling pipe 11 comprisee a sealing system17a, nban-angedtomaintainthepolaroíl 15ínthelongitudinalspaoe13 andthus within the cooling pipe u. The sealing system 17a, 17b may be arrangedat the two ends, Le. the power cable core 9 receiving side and at the powercable core 9 exit side of the cooling pipa n.
    According to one variation, the polar oil 15 has an over-pressure rela fi ve toambient pressure. The overpreswre AP may be at least 1.5 bar.
    'Aooordingto one variation the polar oil 15 is a polyalkylene glycol oil or asilicon oil. These are examples of polar oils 15 that are compatible with theinsula fi on system. The insulation system may for example eompríse twosemlconductor layers; an inner semieonductor layer, an intermediateinsulation layer, and an outar semiconductor layer.
    Thecoolingpipe irformspartofoneofaverticaleooling arrangement, ahorizontal cooling arrangement and a catenary cooling arrangement. Thecooling pipe n is hence suitable for any of these processes.
    With reference to Pig. 2, a method Of manufacturing a power cable by meansof the arrangement 1 will nowbe described.
    In a step a) heated, molten, insula fi ng material 5 is applied onto a eonducborfl oformapowercablecore glheinsula fi ngmaterialthus femmanlnsulation system for the conductor 7. Step a) may involve the application ofseveral layers of insula material ng material 5 to the conductor 7.
    In a step b) the power cable core 9 is moved through the ooolíng pipe 11, andthe ínsulartlng material 5 applied to the conductor 7 is thereby eooled bymeans of the polar oil 15.
    The mantrfacturing method is typically a continuous process in which thepower cable core 9 oontinually moves through oooling pipe n. In order to814. OCT. 2014 8:5410ABB AB GFLC / IP 5 NO. 991 P.
    ABB AB GFLC / IPobtain a thermoplastic power cable from the power cable core, furthermanufacturing steps may for example include providing a metal sheet aroundthe power cable core 9 and and / or an external sheath, for example made of apeace mmm iIn order to obtain optimal ooolíng, the cooling pipe 11 may be sec fi onalised toobtain díiïerent cooling environment: in each section. The cooling pipe 11may hence according to one variation be physically suhdivided into aplurallty of cooling sections. Each cooling section may contain polar oll urlthdifferent temperature.
    The thermoplastic power cable that may be manufactured by the method andarrangements presented heroin mav be a low voltage, a medium voltage or ahigh voltage power cable. The thennoplastic power cable may be enalternating current (AC) power cable or a direct current (DC) power cable.
    The thermoplastlc power cable may be an onshore or a mar-ine power cable.
    The inventive concept has mainlybeen described above with reference to afew examples. However, as is readily appreciated by a person skilled in theart, other emhodiments than the ones disclosed above are equally possiblewithin the ecope of the inventive concept, ae de fi ned by the appended claims.9
    权利要求:
    Claims (1)
    [1]
    Patent application No: 1400480-8 On the filing date of this application, no Patent Claims Were enelosed.
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    同族专利:
    公开号 | 公开日
    SE1400480A2|2015-02-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2015-07-14| NAV| Patent application has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1400480A|SE1400480A2|2014-10-14|2014-10-14|A method and arrangement for manufacturing a power cable|SE1400480A| SE1400480A2|2014-10-14|2014-10-14|A method and arrangement for manufacturing a power cable|
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