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    • 7. 发明授权
    • Puffer type liquefied-gas self-injection circuit breaker
    • 河豚式液化气自注射断路器
    • US4736080A
    • 1988-04-05
    • US21761
    • 1987-03-04
    • Guy St-JeanMichel LandryRobert JeanjeanDaniel Demissy
    • Guy St-JeanMichel LandryRobert JeanjeanDaniel Demissy
    • H01H33/53H01H33/57H01H33/91H01H33/915H01H33/88
    • H01H33/53H01H33/91H01H2033/912H01H33/57
    • A puffer type liquefied-gas self-injection circuit breaker, used for the interruption at low temperature of a high current carried by a high-voltage power line. The circuit breaker comprises a first fixed contact and a compression chamber. The compression chamber has a bottom part which is fixed and an upper part of which is movable in the axial direction with respect to the bottom part. The upper part of the compression chamber comprises a second contact and an envelope concentrically disposed thereabout. An insulating nozzle is formed in a top portion of the envelope. The internal wall of the envelope is so shaped as to exactly match the external profile of the bottom part of the compression chamber. The breaker is also equipped with a liquefied-gas self-injection system which injects the liquefied-gas from their storage tank via a feed line and valve directly onto the electric arc formed at the moment of current interruption. This system comprises an injection chamber located in the wall of the moving part of the compression chamber. The injection chamber is terminated at one end by a narrow injection channel acting as a nozzle directed towards the electric arc while the other end rests on a compression piston formed by a pre-injection chamber. The latter forms an integral part of the fixed bottom part of the compression chamber and is equipped at its top end with a check valve permitting its use as a compression piston when the valve is closed and permitting the transfer of liqufied-gas to the injection chamber when the valve is in the open position. A storage tank placed at the bottom of the compression chamber provides for the recuperation by gravity of all the liquefied-gas in the apparatus.
    • 一种用于高压电力线承载的高电流低温中断的河豚型液化气自注射断路器。 断路器包括第一固定触点和压缩室。 压缩室具有固定的底部,其上部相对于底部沿轴向移动。 压缩室的上部包括第二接触件和同心地设置在其周围的外壳。 绝缘喷嘴形成在外壳的顶部。 外壳的内壁的形状是与压缩室的底部的外部轮廓精确匹配的。 断路器还配备有液化气自注射系统,其将来自储罐的液化气体通过进料管线和阀直接喷射到在电流中断时形成的电弧上。 该系统包括位于压缩室的移动部分的壁中的注射室。 注射室在一端被一个狭窄的注入通道端接,该狭窄的注入通道用作朝向电弧的喷嘴,而另一端则靠在由预注射室形成的压缩活塞上。 后者形成压缩室的固定底部的整体部分,并且在其顶端配备有止回阀,当止回阀关闭时允许其用作压缩活塞并允许液化气体转移到注射室 当阀处于打开位置时。 放置在压缩室底部的储罐通过设备中所有液化气体的重力来恢复。