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    • 36. 发明公开
    • Metering system and method for supplying gas to a torch
    • Messungsystem und Verfahren zur Versorgung mit Gas eines Brenner
    • EP1655095A2
    • 2006-05-10
    • EP05023749.4
    • 2005-10-31
    • THE ESAB GROUP, INC.
    • Higgins, Philip K.Severance, Wayne Stanley, Jr.
    • B23K9/16
    • B23K10/00B23K9/16
    • A metering system and associated method for supplying gas to a torch are provided. The metering system includes a controller that is configured to adjust a pressure regulator according to the pressure and flow rate of the gas delivered to the torch. For example, the torch can be a plasma arc torch that has an electrode positioned in a nozzle and operates in a working mode by providing an arc from the electrode to a workpiece. In a first mode of operation, the metering system can provide a gas to the torch by adjusting the pressure regulator according to the pressure downstream of the pressure regulator. In a second mode of operation, the metering system can provide adjust the pressure regulator according to the flow rate of the gas through a flow transducer in series with the pressure regulator. Further, the metering system can be configured to monitor the downstream pressure and the flow rate of the gas and determine therefrom whether there exists in the torch a double arc or other operating condition that affects the flow of the gas through the nozzle.
    • 提供了一种用于向割炬提供气体的计量系统和相关方法。 计量系统包括控制器,该控制器被配置成根据输送到割炬的气体的压力和流速来调节压力调节器。 例如,手电筒可以是等离子弧焊炬,其具有位于喷嘴中的电极并且通过从电极向工件提供电弧而在工作模式下操作。 在第一操作模式中,计量系统可以通过根据压力调节器下游的压力调节压力调节器来向喷枪提供气体。 在第二种操作模式中,计量系统可以根据通过与压力调节器串联的流量传感器的气体的流速来调节压力调节器。 此外,计量系统可以被配置为监测气体的下游压力和流量,并由此确定喷枪中是否存在影响通过喷嘴的气体流动的双弧或其它操作状态。