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    • 37. 发明专利
    • Insulation joint box for power cable
    • 电力电缆绝缘接线盒
    • JP2006074926A
    • 2006-03-16
    • JP2004256672
    • 2004-09-03
    • Furukawa Electric Co Ltd:TheViscas Corp古河電気工業株式会社株式会社ビスキャス
    • HORIGUCHI NORIAKI
    • H02G15/08H02G15/115
    • PROBLEM TO BE SOLVED: To provide an insulation joint box for a power cable that fully protects an insulating cylinder by suppressing an excessive voltage rise between the insulating cylinders caused by the invasion of a switching surge or a lightning surge, whose structure is simple and small, and whose cost can be cut. SOLUTION: Metal casings 2, 2 comprising two pieces of copper tubes are arranged in such a way as to cover the entirety of a joint box unit 1. Outside ends of the metal casings 2, 2 are connected to cable sheaths 4, 4. Between connecting flanges 2a, 2a formed at inside ends facing each other of the metal casings 2, 2, the insulating cylinder 10 made of a zinc oxide element is provided in such a way as to be positioned almost at the center in the longitudinal direction of the joint box unit 1. The insulating cylinder 10 is fixed to the connecting flanges 2a, 2a by tightening a plurality of bolts. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种用于电力电缆的绝缘接合盒,其通过抑制由于开关浪涌或雷电浪涌的侵入引起的绝缘筒之间的过度的电压上升而完全保护绝缘筒,其结构是 简单小巧,可以削减成本。

      解决方案:包括两片铜管的金属外壳2,2以覆盖接合盒单元1整体的方式布置。金属外壳2,2的外端连接到电缆护套4, 在形成在金属壳体2,2的彼此面对的内侧的连接凸缘2a,2a之间,由氧化锌元件制成的绝缘圆筒10以几乎位于纵向的中心的方式设置 接合盒单元1的方向。绝缘筒10通过拧紧多个螺栓而固定到连接凸缘2a,2a。 版权所有(C)2006,JPO&NCIPI