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    • 7. 发明申请
    • Omnidirectional eddy current probe and inspection system
    • 全向涡流探头和检测系统
    • US20050264284A1
    • 2005-12-01
    • US10856381
    • 2004-05-27
    • Changting WangYuri PlotnikovShridhar NathWilliam McKnightGigi Gambrell
    • Changting WangYuri PlotnikovShridhar NathWilliam McKnightGigi Gambrell
    • G01D5/20G01N27/90G01R33/02G01R33/12G01N27/82
    • G01N27/902G01N27/9033G01N27/904
    • An omnidirectional eddy current (EC) probe includes at least one EC channel having a first and a second sense coil that are offset in a first (x) and a second (y) direction and overlap in at least one of the directions (x,y). At least one drive coil is configured to generate a probing field for the EC channel in a vicinity of the sense coils. An omnidirectional EC inspection system includes an omnidirectional EC array probe (ECAP) that includes a number of EC channels and drive coils. Each EC channel includes first and second sense coils with opposite polarities. The drive coils have alternating polarities. Electrical connections perform differential sensing for respective EC channels. Corrective drive coils are disposed at respective ends of the EC channels and generate probing fields. An eddy current instrument is connected to the omnidirectional ECAP and receives differential sensing signals from the EC channels.
    • 全向涡流(EC)探针包括至少一个具有第一和第二感测线圈的EC通道,该第一和第二感测线圈在第一(x)和第二(y)方向上偏移并且在至少一个方向(x, y)。 至少一个驱动线圈被配置为在感测线圈附近产生用于EC通道的探测场。 全方位的EC检测系统包括一个包括多个EC通道和驱动线圈的全向EC阵列探针(ECAP)。 每个EC通道包括具有相反极性的第一和第二感测线圈。 驱动线圈具有交替极性。 电气连接对相应的EC通道执行差分感测。 纠正驱动线圈设置在EC通道的相应末端并产生探测场。 涡流仪器连接到全向ECAP,并从EC通道接收差分感测信号。
    • 8. 发明授权
    • Pulsed eddy current pipeline inspection system and method
    • 脉冲涡流管道检查系统及方法
    • US07402999B2
    • 2008-07-22
    • US11290916
    • 2005-11-30
    • Yuri PlotnikovAndrew MayShridhar NathChangting Wang
    • Yuri PlotnikovAndrew MayShridhar NathChangting Wang
    • G01N27/72
    • G01N27/902
    • A pulsed eddy current pipeline inspection device is provided. The pulsed eddy current pipeline inspection device comprises a plurality of stages longitudinally spaced apart from each other and adapted to move between a contracted position and an expanded position, and a plurality of sensors disposed around at least a portion of a circumference of each of the plurality of stages in the contracted position with at least one gap between sensors in each of the plurality of stages in the expanded position, the plurality of sensors being arranged such that the at least one gap in a first one of the plurality of stages is aligned with a portion of a second one of the plurality of stages that has sensors disposed thereon.
    • 提供脉冲涡流管道检查装置。 脉冲涡流管道检查装置包括彼此纵向间隔开并适于在收缩位置和扩张位置之间移动的多个级,并且多个传感器设置在多个的每个的圆周的至少一部分周围 在收缩位置的阶段中,在扩展位置的多个阶段中的每个阶段中的传感器之间具有至少一个间隙,多个传感器被布置成使得多个级中的第一级中的至少一个间隙与 多个级中的第二级的一部分具有设置在其上的传感器。