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    • 8. 发明授权
    • Thermal torch lead gas delivery methods and related systems and devices
    • 火炬铅气输送方法及相关系统及装置
    • US09427820B2
    • 2016-08-30
    • US13904734
    • 2013-05-29
    • Hypertherm, Inc.
    • Jonathan MatherLiming ChenRoss Angus Smith
    • B23K10/00H05H1/32
    • B23K10/006B23K10/00H05H1/32
    • In some aspects, methods of initiating a plasma arc in a plasma cutting system can include providing a plasma gas supply lead line extending between a power supply and a plasma arc cutting torch, where the lead line has a first segment proximate to the power supply and a second segment proximate to the torch, and an in-line valve within the lead line between the first segment and the second segment; selectively closing the in-line valve to capture a static volume of gas in the first segment; establishing a decayable volume of gas in the second segment; and initiating the plasma arc when a pressure of the decayable volume reaches a pressure value within a predetermined range.
    • 在一些方面,在等离子切割系统中启动等离子体电弧的方法可以包括提供在电源和等离子体电弧切割割炬之间延伸的等离子体气体供应引线,其中引线具有靠近电源的第一段, 靠近所述割炬的第二段和所述第一段和所述第二段之间的所述引导线内的直列阀; 选择性地关闭在线阀以捕获第一段中的静态体积的气体; 在第二段建立可燃量的气体; 以及当所述可降解体积的压力达到预定范围内的压力值时启动所述等离子弧。
    • 9. 发明授权
    • Device and method for generating a plasma flow
    • 用于产生等离子体流的装置和方法
    • US08847101B2
    • 2014-09-30
    • US12998872
    • 2009-12-08
    • Stanislav BegounovSergey GoloviatinskiIoulia Tsvetkova
    • Stanislav BegounovSergey GoloviatinskiIoulia Tsvetkova
    • B23K10/00H05H1/34H05H1/32
    • H05H1/34H05H1/32H05H2001/3494
    • The invention relates to a device generating a plasma flow comprising an electrically conductive housing, tubular in shape, forming a central channel traversed by a vortex gas, a central electrode arranged coaxially in said channel and an electric power source intended to apply an electric voltage V between the electrode and the housing, characterized in that the mean diameter of the channel formed by the housing decreases progressively from an area situated substantially at the level of the free end of the electrode as far as an end area of said housing, said end area being configured in such a way that the minimum electric voltage Vcmin(0) to be applied in order to develop an electric arc between said electrode and said end area is strictly greater than said voltage V.
    • 本发明涉及一种产生等离子体流的装置,其包括形状为管状的导电壳体,形成由涡流气体穿过的中心通道,同轴地布置在所述通道中的中心电极和用于施加电压V 在电极和壳体之间,其特征在于,由壳体形成的通道的平均直径从基本上位于电极的自由端的水平面的区域逐渐减小,直到所述壳体的端部区域,所述端部区域 被配置为使得为了在所述电极和所述端部区域之间产生电弧而施加的最小电压Vcmin(0)严格地大于所述电压V.