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    • 1. 发明授权
    • Gas pressurized cable and conduit system
    • 气体加压电缆和导管系统
    • US4581478A
    • 1986-04-08
    • US366172
    • 1982-04-07
    • Paul F. PughPaul Pugh, Jr.
    • Paul F. PughPaul Pugh, Jr.
    • H01B7/00H01B9/06H02G15/24
    • H01B7/0036H01B9/0622H02G15/24Y10S174/07
    • A way to evacuate all moisture and air and then pressurize with SF.sub.6 gas, a cable and conduit system used for electrical power distribution and transmission lines, by fabricating a termination at each end. A termination is made up of a first end plate with a hole slightly larger than the conduit and sealed around the hole to the conduit. For a single phase cable, one electrical terminal is sealed as it goes through the first end plate and is connected to the neutral conductor. A second electrical terminal is sealed as it goes through a second end plate and is connected to the conductor. An enlarged conduit is spaced between these two end plates and is sealed to, the two end plates. A tire valve is installed in one end plate. A hole to fit a pipe nipple is made at the top of the enlarged conduit of one termination. A vacuum pump is connected to a pipe nipple screwed into the hole and the termination evacuated. SF.sub.6 gas is then let in through the tire valve until a pressure of 1 psig is reached, then shut off. The vacuum pump and nipple are removed, then a patch is sealed over the hole. SF.sub.6 gas is now let in to pressurize at 20-80 psig. Various numbers, sizes and kinds of conductors can be used in a conduit to make various kinds of high voltage power cables.
    • 通过在每一端制造终端,通过SF6气体,用于配电和输电线路的电缆和管道系统对所有水分和空气进行排气,然后进行加压。 终端由具有稍大于导管的孔的第一端板构成,并且围绕孔连接到导管。 对于单相电缆,一个电气端子在其穿过第一端板时被密封并且连接到中性导体。 当第二电端子通过第二端板并且被连接到导体时被密封。 这两个端板间隔一个放大的导管,并密封在两个端板上。 轮胎阀安装在一个端板上。 在一个终端的扩大管道的顶部制造一个适合管接头的孔。 真空泵连接到螺纹连接到孔中的管接头,并将端子抽真空。 SF6气体然后通过轮胎阀进入,直到达到1 psig的压力,然后关闭。 去除真空泵和乳头,然后在孔上密封贴片。 现在,SF6气体以20-80psig进行加压。 可以在管道中使用各种数量,尺寸和种类的导体来制造各种高压电力电缆。