High voltage direct current cable with impregnated tape insulation
    1.
    发明授权
    High voltage direct current cable with impregnated tape insulation 失效
    高压直流电缆带浸渍胶带绝缘

    公开(公告)号:US4417093A

    公开(公告)日:1983-11-22

    申请号:US327353

    申请日:1981-12-04

    摘要: A direct current, electric, submarine cable which may be used in long lengths and at great depths and which has improved voltage breakdown characteristics with respect to voids which form in the insulation. The cable has a conductor surrounded by an inner semi-conductive screen which is surrounded by cellulose paper tape insulation which is surrounded by an outer semi-conductive screen which is surrounded by a metal sheath. The paper tape is impregnated with a compound comprising a viscous hydrocarbon oil containing a substance having polar groups, the amount of the substance being sufficient to make the volume resistivity of the compound 100 times lower than the volume resistivity of the tape with the compound therein.

    摘要翻译: 直流电动海底电缆,其长度可长,深度大​​,并且相对于在绝缘体中形成的空隙具有改善的电压击穿特性。 电缆具有被内部半导电屏幕包围的导体,该内部半导体屏幕被由纤维素纸带绝缘体包围,该绝缘体由被金属护套包围的外部半导电屏幕包围。 纸带被含有含有具有极性基团的物质的粘性烃油的化合物浸渍,该物质的量足以使化合物的体积电阻率低于其中化合物的带的体积电阻率的100倍。

    High voltage, electric submarine cable with insulation of longitudinally
varying voltage breakdown strength
    2.
    发明授权
    High voltage, electric submarine cable with insulation of longitudinally varying voltage breakdown strength 失效
    高电压,海底电缆具有绝缘纵向变化的电压击穿强度

    公开(公告)号:US4224462A

    公开(公告)日:1980-09-23

    申请号:US18766

    申请日:1979-03-08

    IPC分类号: H01B7/14 H01B9/06 H02G9/02

    CPC分类号: H01B7/14 H01B9/0611

    摘要: A submarine cable and an electric power line using such cable for transmitting electric power at high voltge from a first point adjacent the surface of a water body to a second point adjacent the surface of a water body, a portion of the cable lying in great water depths where the hydrostatic pressure is high. The cable comprises at least three sections, each section having its insulation dimensioned or selected for operation at the high voltage when subjected to the ambient pressures. The section, or sections, lying at great depths has insulation with a voltage breakdown strength which varies with pressure, the strength increasing with pressure, so that the insulation thereof may be less than would be required if the such sections were to be used under pressures less than those at the great depths.

    摘要翻译: 使用这种电缆的海底电缆和电力线从邻近水体表面的第一点向高电压传输电力到邻近水体表面的第二点,电缆的一部分位于大水中 静水压力高的深度。 电缆包括至少三个部分,每个部分具有其绝缘尺寸或选择用于在受到环境压力时在高电压下操作。 位于较深的部分或部分具有绝缘,其电压击穿强度随压力而变化,强度随压力而增加,使得其绝缘可能小于如果这些部分在压力下使用时所需的绝缘 少于那些在深处的人。

    Taped electric cable
    3.
    发明授权
    Taped electric cable 失效
    带状电缆

    公开(公告)号:US4415761A

    公开(公告)日:1983-11-15

    申请号:US283556

    申请日:1981-07-15

    CPC分类号: H01B7/02

    摘要: The invention concerns an improvement in taped cables having large diameter and suitable for use at voltages up to and over 1000 kV. The taping of one or more layers is wound according to a double-start or multi-start helix, said helix having an inclination less than 75.degree..

    摘要翻译: 本发明涉及具有大直径并适用于高达和超过1000kV的电压的带状电缆的改进。 一层或多层的胶带根据双重启动或多次启动螺旋缠绕,所述螺旋具有小于75°的倾斜度。

    Underwater optical fiber cable with segmented protective tube
    4.
    发明授权
    Underwater optical fiber cable with segmented protective tube 失效
    水下光缆与分段保护管

    公开(公告)号:US4690497A

    公开(公告)日:1987-09-01

    申请号:US738059

    申请日:1985-05-24

    IPC分类号: H01B7/14 G02B6/44

    CPC分类号: G02B6/4427 G02B6/4494

    摘要: An underwater optical fiber cable for laying at great depths in which an optical fiber core containing a plurality of optical fibers is protected by a peripherally segmented metal tube, each metal segment, in cross-section, having the shape of a sector of an annular, which is surrounded by at least one layer of elongated metal elements wound helicoidally around the tube, each element having radially extending sides which have radial lengths less than the peripheral lengths of the peripheral surfaces of the element. The layer or layers are surrounded by a watertight, conductive metal sheath and preferably, the sheath is surrounded by a plastic sheath.

    摘要翻译: 一种水下光纤缆线,用于铺设在其中包含多根光纤的光纤芯线的大深度处被外围分段的金属管保护,每个金属段的横截面具有环形扇形的形状, 其被围绕管缠绕的至少一层细长金属元件围绕,每个元件具有径向延伸的侧面,其径向长度小于该元件的周边表面的周长。 该层被水密的导电金属护套包围,优选地,护套由塑料护套包围。

    Optical fiber cable including layers which compensate for thermal
expansion
    5.
    发明授权
    Optical fiber cable including layers which compensate for thermal expansion 失效
    光缆包括补偿热膨胀的层

    公开(公告)号:US4568144A

    公开(公告)日:1986-02-04

    申请号:US636065

    申请日:1984-07-30

    IPC分类号: H01B7/17 G02B6/44 G02B5/16

    CPC分类号: G02B6/443 G02B6/441

    摘要: Telecommunication elements each comprising one or more optical fibers surrounded by one or more layers of a plastic are wrapped with a non-metallic protective layer. The protective layer is enclosed by a metal tube which has at least portions which press into the protective layer so as to provide dimensional stability to the elements and protective layer within the tube. The metal tube may have a cylindrical inner wall or be a corrugated tube, and such tube protects the optical fibers with respect to electrical discharges.

    摘要翻译: 每个包括由一层或多层塑料包围的一个或多个光纤的电信元件用非金属保护层包裹。 保护层由金属管包围,该金属管具有至少部分压入保护层中,以便为管内的元件和保护层提供尺寸稳定性。 金属管可以具有圆柱形内壁或波纹管,并且这种管相对于放电来保护光纤。

    Optical fiber element with three layer protective covering
    6.
    发明授权
    Optical fiber element with three layer protective covering 失效
    具有三层保护罩的光纤元件

    公开(公告)号:US4448484A

    公开(公告)日:1984-05-15

    申请号:US364187

    申请日:1982-03-31

    IPC分类号: C03C25/10 G02B6/44 G02B5/14

    摘要: An optical fiber element comprising an optical fiber surrounded and protected from mechanical stresses by three layers of plastic material, the intermediate layer having a modulus of elasticity substantially less than the moduli of elasticity of the adjacent inner and outer layers and less than one Kilogram/mm.sup.2.

    摘要翻译: 一种光纤元件,包括被三层塑料材料包围和保护免受机械应力的光纤,该中间层的弹性模量基本上小于邻近的内层和外层的弹性模量,小于一千克/平方毫米 。