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    • 3. 发明授权
    • Gas-blast switch
    • 鼓风开关
    • US4689453A
    • 1987-08-25
    • US832468
    • 1986-02-20
    • Imre HorvathLutz NiemeyerWolfgang Widl
    • Imre HorvathLutz NiemeyerWolfgang Widl
    • H01H33/98H01H33/985H01H33/82
    • H01H33/98
    • A switch, preferably for switching medium voltages, includes a structure which creates a gas-blast to quench an arc drawn between two separating contact pieces of the switch. The gas-blast is created solely by the quenching gas which is heated by the arc, without auxiliary pressure creating mechanisms. The gas blast is sufficiently powerful to cut off high and low currents without use of pressure-controlling valves. The result is realized via a flow-off pipe located between a space where the arc develops and a gas exhaust space. One end of the flow-off pipe opens into the exhaust space. The size of the flow-off pipe is determined in part by the speed of propagation of a pressure wave which is formed in the arc space during the heating phase of the arc and the length thereof is deliberately selected such that the pressure gradient between the heated quenching gas and the arc space is maximized.
    • 优选地用于切换介质电压的开关包括产生气体喷射以猝灭在开关的两个分离接触片之间拉伸的电弧的结构。 气体喷射仅由通过电弧加热的淬火气体产生,而没有辅助压力产生机构。 气体爆炸是足够强大的,以切断高低电流而不使用压力控制阀。 其结果是通过位于电弧产生的空间与排气空间之间的流出管实现。 流出管的一端通向排气空间。 流出管的尺寸部分地由在电弧的加热阶段期间在电弧空间中形成的压力波的传播速度确定,并且其长度被故意选择为使得加热的 淬火气体和电弧空间最大化。
    • 4. 发明授权
    • Compressed-gas breaker
    • 压缩气体断路器
    • US4559425A
    • 1985-12-17
    • US650058
    • 1984-09-13
    • Heinz-Peter KircheschWilhelm NurckWolfgang Widl
    • Heinz-Peter KircheschWilhelm NurckWolfgang Widl
    • H01H33/70H01H33/90H01H33/98H01H33/985H01H33/12
    • H01H33/901H01H33/74H01H33/982
    • A compressed-gas breaker having a magnetic coil through which the breaking current flows, has two coaxial contact members which are movable with respect to each other along a central axis and have in each case one arcing contact. The arcing contacts are surrounded by a heating chamber which is joined to the arc volume located between the separated burning contacts during breaking. In this breaker, the breaking capacity is to be improved by a simple means. This is achieved by the fact that between the heating chamber and the arc volume a gas-guiding device is provided which has at least three ducts which are arranged to be distributed azimuthally around the axis. These ducts have sections which open radially with respect to the axis into the arc volume. Such a breaker can be used preferably for the switching of large current of medium-high voltage.
    • 具有断开电流流过的磁性线圈的压缩气体断路器具有两个同轴接触构件,这两个同轴接触构件可沿着中心轴线相对于彼此移动,并且在每种情况下都具有一个电弧接触。 电弧触点由加热室围绕,该加热室在断开期间连接到位于分离的燃烧接触件之间的电弧体积。 在该断路器中,通过简单的手段来提高分断能力。 这是通过在加热室和电弧体积之间设置气体引导装置来实现的,该气体引导装置具有至少三个管道,其布置成围绕轴线方位分布。 这些管道具有相对于轴线径向开放到弧体积中的部分。 这种断路器可以优选地用于中等电压的大电流的切换。