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    • 18. 发明授权
    • Electric arc confining device
    • 电弧限制装置
    • US4362915A
    • 1982-12-07
    • US282361
    • 1981-07-13
    • David L. Swindler
    • David L. Swindler
    • H01H33/08H01H33/12
    • H01H33/123H01H33/08H01H2033/085
    • An arc chute for a high voltage load interrupter switch has a pair of closely spaced side walls defining an arc chamber. An inner side of each wall has at least one groove between an open outer end of the chamber and an inner area of the chamber where blade contact is first broken resulting in a electrical arc. The longer axes of the grooves are generally perpendicular to the direction of flow of expanding arc gases that form at an inner end of the chamber when the switch is opened under load. The grooves have a semi-teardrop shaped cross section with the deeper portions of the grooves nearer the outer end of the chamber. As the expanding arc gases flow toward the chamber opening, some gas flows into the grooves which function as vortex generators causing the gases to swirl. The swirling gases then reverse direction and impede the flow of additional gases coming from the inner end of the chamber, and increase the pressure within said chamber fostering arc interruption by aiding molecular recombination by reducing the distance between ions.
    • 用于高压负载断路器开关的电弧槽具有限定电弧室的一对紧密间隔的侧壁。 每个壁的内侧在腔室的开放的外端和腔室的内部区域之间具有至少一个凹槽,其中叶片接触件首先断开,从而产生电弧。 当开关在负载下打开时,槽的较长的轴线大致垂直于在室的内端处形成的膨胀电弧气体的流动方向。 凹槽具有半泪珠形横截面,凹槽的较深部分靠近腔室的外端。 当扩大的电弧气体朝向腔室开口流动时,一些气体流入作为涡流发生器的凹槽,导致气体旋转。 然后旋转气体反向并阻止来自腔室内端的附加气体的流动,并通过减少离子之间的距离来帮助分子重组,从而增加所述室内的压力,从而促进电弧中断。