Composite electrical insulator and method of forming same
    1.
    发明授权
    Composite electrical insulator and method of forming same 失效
    复合电绝缘子及其形成方法

    公开(公告)号:US4845318A

    公开(公告)日:1989-07-04

    申请号:US158065

    申请日:1988-02-12

    摘要: The invention provides an electrical insulator comprising a cylindrical core (2) of an insulating refractory material, such as porcelain, onto a portion of the curved surface of which a sleeve (8) of insulating polymeric material is fitted. Metal end-caps (4), for electrically connecting the insulator, are fitted to the ends of the porcelain core such that there is an exposed portion (10) of the curved surface of the core between the sleeve and each end-cap. Thus, any damaging electrical activity which takes place at the metal end-caps is directed primarily onto the surface of the porcelain core (2), and not onto the surface of the electrically vulnerable polymeric sleeve (8), which serves to protect mechanically the relatively brittle porcelain core. Optionally, the polymeric sleeve (8) may have a convoluted or a shedded outer surface (12) to increase the leakage path length of the insulator, or to prevent the formation of a continuous moisture path, or both.

    摘要翻译: 本发明提供了一种电绝缘体,其包括绝缘耐火材料(例如瓷器)的圆柱形芯(2),其在弯曲表面的一部分上安装有绝缘聚合物材料的套筒(8)。 用于电连接绝缘体的金属端盖(4)装配到瓷芯的端部,使得在套筒和每个端盖之间存在芯的弯曲表面的暴露部分(10)。 因此,在金属端盖处发生的任何有害的电活动主要指向瓷芯(2)的表面,而不是指向电气易损的聚合物套筒(8)的表面,其用于机械地保护 比较脆的瓷芯。 可选地,聚合物套筒(8)可以具有回旋或脱落的外表面(12),以增加绝缘体的泄漏路径长度,或防止形成连续的湿气路径,或两者。

    Composite electrical insulator
    2.
    发明授权
    Composite electrical insulator 失效
    复合电绝缘子

    公开(公告)号:US5389742A

    公开(公告)日:1995-02-14

    申请号:US866071

    申请日:1992-04-01

    摘要: An electrical insulator comprising a cylindrical core (2) of an insulating refractory material, such as porcelain, onto a portion of the curved surface of which a sleeve (8) of insulating polymeric material is fitted. Metal end-caps (4), for electrically connecting the insulator, are fitted to the ends of the porcelain core such that there is an exposed portion (10) of the curved surface of the core between the sleeve and each end-cap. Thus, any damaging electrical activity which takes place at the metal end-caps is directed primarily onto the surface of the porcelain core (2), and not onto the surface of the electrically vulnerable polymeric sleeve (8), which serves to protect mechanically the relatively brittle porcelain core. Optionally, the polymeric sleeve (8) may have a convoluted or a shedded outer surface (12) to increase the leakage path length of the insulator, or to prevent the formation of a continuous moisture path, or both.

    摘要翻译: 一种电绝缘体,其包括绝缘耐火材料(例如瓷器)的圆柱形芯(2),所述绝缘耐火材料的一部分弯曲表面安装有绝缘聚合材料的套筒(8)。 用于电连接绝缘体的金属端盖(4)装配到瓷芯的端部,使得在套筒和每个端盖之间存在芯的弯曲表面的暴露部分(10)。 因此,在金属端盖处发生的任何有害的电活动主要导向到瓷芯(2)的表面上,而不是导电到电气易损的聚合物套筒(8)的表面上,其用于机械地保护 比较脆的瓷芯。 可选地,聚合物套筒(8)可以具有回旋或脱落的外表面(12),以增加绝缘体的泄漏路径长度,或防止形成连续的湿气路径,或两者。

    Helical insulator containing at least one optical fiber
    4.
    发明授权
    Helical insulator containing at least one optical fiber 失效
    含有至少一根光纤的螺旋绝缘体

    公开(公告)号:US4827081A

    公开(公告)日:1989-05-02

    申请号:US235703

    申请日:1988-08-17

    摘要: A high voltage insulator that has a helical configuration in which successive turns are axially spaced apart, and an exposed surface of insulating and substantially non-tracking material. The helical configuration provides a long creepage path length and an ability to shed water. The insulator is sufficiently rigid for it to provide a support, for example, for a high voltage cable or for a fibre optic cable.

    摘要翻译: 具有螺旋形构型的高压绝缘体,其中连续的匝轴向间隔开,以及绝缘和基本上不跟踪材料的暴露表面。 螺旋结构提供了较长的爬电路径长度和脱水能力。 绝缘体具有足够的刚性以使其能够提供例如用于高压电缆或光纤电缆的支撑。