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    Device for cross-linking of coating material such as rubber or plastic, for electric wire
    2.
    发明授权
    Device for cross-linking of coating material such as rubber or plastic, for electric wire 失效
    用于电线交联涂层材料如橡胶或塑料的装置

    公开(公告)号：US4174677A

    公开(公告)日：1979-11-20

    申请号：US872768

    申请日：1978-01-27

    申请人： Hiroo Nagano ,  Chuki Ikeda ,  Kenji Takahashi ,  Naoyoshi Kato ,  Norio Sato

    发明人： Hiroo Nagano ,  Chuki Ikeda ,  Kenji Takahashi ,  Naoyoshi Kato ,  Norio Sato

    IPC分类号： B29C35/06 ,  B29C47/00 ,  H01B13/06 ,  B05C11/00

    CPC分类号： H01B13/06 ,  B29C35/065 ,  B29C47/0014 ,  B29C47/00 ,  B29K2021/00

    摘要： A device for cross-linking of coating material such as rubber or plastic having a vertical or inclined cross-linking tube including a heating portion and a succeeding cooling portion, said heating portion comprising at the side thereof a gas circulating passage having a gas supply device, a gas heating device, a gas cooling device and a filter, said gas circulating passage communicating with an exhaust port above the heating portion and with a gas supply port below the heating portion so that the gas circulate in a direction opposed to the traveling direction of a conducting strand passing therethrough, whereby said conductive strand is heated and cross-linked while residue emitted from the coating material of said conductive strand is effectively removed.

    摘要翻译： 一种用于交联诸如橡胶或塑料的涂料的装置，其具有包括加热部分和后续冷却部分的垂直或倾斜交联管，所述加热部分在其侧面包括具有气体供应装置的气体循环通道 气体加热装置，气体冷却装置和过滤器，所述气体循环通道与加热部分上方的排气口连通，并且在加热部分下方具有气体供给口，使得气体沿与行进方向相反的方向循环 其中所述导电链被加热和交联，同时有效地除去从所述导电链的涂层材料发射的残留物。

    Method for diagnosing an insulation deterioration of a power cable
    3.
    发明授权
    Method for diagnosing an insulation deterioration of a power cable 失效
    诊断电力电缆绝缘劣化的方法

    公开(公告)号：US4980645A

    公开(公告)日：1990-12-25

    申请号：US489800

    申请日：1990-03-05

    申请人： Kenichiro Soma ,  Kazuo Kotani ,  Nobuju Takaoka ,  Chuki Ikeda ,  Moritada Marumo

    发明人： Kenichiro Soma ,  Kazuo Kotani ,  Nobuju Takaoka ,  Chuki Ikeda ,  Moritada Marumo

    IPC分类号： G01R27/18 ,  G01R31/02 ,  G01R31/12

    CPC分类号： G01R27/18 ,  G01R31/021

    摘要： A power cable such as a rubber or plastic insulated power cable is diagnosed to be detected an insulation deterioration resulted from water tree generated in an insulation material thereof. At first, charging current flowing from the power cable through a grounding conductor connected to a metal shielding layer thereof to the ground is measured under a state that a rated AC voltage is applied to the power cable. In accordance with the charging current, stray current flowing from the ground to the power cable is calculated. Then, a direct current component of the charging current is detected, and an intrinsic direct current component is calculated by subtracting the stray current from the direct current component. The insulation deterioration is diagnosed in accordance with the level of the intrinsic direct current component.

    摘要翻译： 诊断出诸如橡胶或塑料绝缘电力电缆的电力电缆被检测到在其绝缘材料中产生的水树导致的绝缘劣化。 首先，在向电力电缆施加额定交流电压的状态下，测量从电力电缆流过与其金属屏蔽层连接的地线的接地的充电电流。 根据充电电流，计算从地面流向电力电缆的杂散电流。 然后，检测充电电流的直流分量，并通过从直流分量中减去杂散电流来计算本征直流分量。 绝缘劣化根据本征直流分量的水平进行诊断。