Surge arrester with parallel-connected improved spark gap structure
    1.
    发明授权
    Surge arrester with parallel-connected improved spark gap structure 失效
    具有并联连接的避雷器改善了火花隙结构

    公开(公告)号:US4366412A

    公开(公告)日:1982-12-28

    申请号:US156413

    申请日:1980-08-04

    IPC分类号: H01T1/14 H01J17/00 H01J21/00

    CPC分类号: H01T1/14

    摘要: A surge arrester with a parallel-connected improved spark gap structure has a flanged ring connected to one of the two electrodes of the surge arrester which forms the first electrode of the spark gap structure, an axially aligned insulator disc having recesses therein seated on the flanged ring, and an annular metal contact seated on the opposite side of the insulator ring forming the second electrode of the spark gap structure through the recesses in the insulating ring has the improvements of the metal contact forming the second electrode of the spark gap being an annular cup having a base seated against the insulator ring and a conical wall connected via contact springs with the other electrode of the surge arrester, and the base of the annular cup has projections in registry with the insulator ring recesses extending a distance therein such that the spark gap is formed between the flanged ring and the highest elevation of the projections. The spark gap serves as a back up to a fail-safe device which would normally permanently short the surge arrester to ground after an extended discharge, which spark gap is resistant to conductive deposits being formed thereon.

    摘要翻译: 具有并联连接的改进的火花间隙结构的电涌放电器具有连接到形成火花隙结构的第一电极的电涌放电器的两个电极中的一个的凸缘环,轴向对准的绝缘体盘,其具有位于法兰上的凹部 并且通过绝缘环中的凹部而位于形成火花隙结构的第二电极的绝缘体环的相对侧上的环形金属触点具有形成火花隙的第二电极的金属接触的改进,该金属接触是环形的 杯子具有抵靠绝缘体环的基座和通过接触弹簧与避雷器的另一个电极连接的锥形壁,并且环形杯的底部具有与绝缘体环凹部对准的突出部,其中延伸一定距离使得火花 凸缘环与凸起的最高高度之间形成间隙。 火花隙作为备用的故障安全装置,其通常将永久性地将电涌放电器短时间放电到扩展放电之后,该火花间隙抵抗在其上形成的导电沉积物。

    Overvoltage arrester with air gap
    2.
    发明授权
    Overvoltage arrester with air gap 失效
    带有空气隙的过压报警器

    公开(公告)号:US5142434A

    公开(公告)日:1992-08-25

    申请号:US422675

    申请日:1989-10-17

    IPC分类号: H01T4/12

    CPC分类号: H01T4/12

    摘要: For reducing the engineering cost of construction and manufacture for the air gap associated with the second electrode in an overvoltage arrester with air gap connected in parallel, the arrester (22) is enclosed by a cylindrical metal sleeve (28). One edge (19) of this metal sleeve contacts the first electrode (3) of the arrester, while the other edge (14) is laid over inwardly and grips the auxiliary electrode (27) placed on the second electrode (25) with interposition of an insulating disk (26). The outside diameter of this auxiliary electrode (27) is greater than the outside diameter of the second electrode (25). For the centering of the arrester (22) in the metal sleeve (28) the distance between the arrester and the metal sleeve is smaller, at least at three points over the circumference, than the required radial safety distance between the metal sleeve and the second electrode. This can be achieved, for example, by several punctiform depressions (30) of the metal sleeve arranged uniformly distributed over the circumference or also by an annular construction (29).

    摘要翻译: 为了降低与间隙连接的过电压避雷器中与第二电极相关联的气隙的工程造价工程成本,避雷器(22)被圆柱形金属套筒(28)封闭。 该金属套筒的一个边缘(19)与避雷器的第一电极(3)接触,而另一个边缘(14)向内放置并且夹住放置在第二电极(25)上的辅助电极(27),插入 绝缘盘(26)。 该辅助电极(27)的外径大于第二电极(25)的外径。 为了使金属套筒(28)中的避雷器(22)对中,避雷器和金属套管之间的距离至少在圆周上的三个点处比金属套筒和第二个金属套管之间所需的径向安全距离更小 电极。 这可以通过例如均匀地分布在圆周上的金属套管的几个点状凹陷(30)或者也可以通过环形结构(29)来实现。

    Gas discharge overvoltage arrester with parallel-connected spark gap
    3.
    发明授权
    Gas discharge overvoltage arrester with parallel-connected spark gap 失效
    气体放电过电压避雷器并联火花隙

    公开(公告)号:US4493006A

    公开(公告)日:1985-01-08

    申请号:US580759

    申请日:1984-02-17

    IPC分类号: H01T1/14 H02H9/06

    CPC分类号: H01T1/14

    摘要: Overvoltage arrester having a gas-filled housing, including two overvoltage arrester electrodes disposed across from each other in the housing, a tubular insulator body spacing the overvoltage arrester electrodes apart from each other, a ring-shaped flange integral with one of the overvoltage arrester electrodes forming a first spark gap electrode, a ring-shaped metal cap forming a second spark gap electrode being superimposed on the first spark gap electrode and pressed in on the tubular insulator body, the first and second spark gap electrodes forming a spark gap having a given clearance therebetween, and a contact spring connecting the second spark gap electrode to the other of the overvoltage arrester electrodes.

    摘要翻译: 具有气体充电壳体的过电压避雷器,包括在外壳中彼此相对设置的两个过电压避雷器电极,将过电压避雷器电极彼此间隔开的管状绝缘体,与过电压避雷器电极之一成一体的环形凸缘 形成第一火花隙电极,形成第二火花隙电极的环形金属盖叠加在第一火花隙电极上并被压在管状绝缘体上,第一和第二火花隙电极形成具有给定的火花隙 以及将第二火花隙电极连接到另一个过电压避雷器电极的接触弹簧。