Phased array ultrasonic testing system and methods of examination and modeling employing the same
    32.
    发明授权
    Phased array ultrasonic testing system and methods of examination and modeling employing the same 有权
    相控阵超声波检测系统及其使用方法

    公开(公告)号:US07428842B2

    公开(公告)日:2008-09-30

    申请号:US11157050

    申请日:2005-06-20

    IPC分类号: G01N29/26 G01N29/24 G01N29/06

    摘要: A phased array ultrasonic testing system is for examining turbine disc bores and blade attachments for discontinuities, such as stress corrosion cracking. The system is particularly suited to perform an accurate and efficient inspection of components despite their having a relatively complex geometry, such as axial entry blade attachments and bores of associated discs. The system includes a control system with a computer and a controller for programming, emitting, and steering an ultrasonic beam via at least one two-dimensional phased array probe, thereby precisely inspecting the area of interest while simultaneously accommodating the aforementioned complex geometry of the disc or blade attachment. Computer control of the beam permits the number of inspection locations and the number of different probe wedges to be reduced providing for an efficient, timely inspection. Methods of profiling and examining turbine components of known and unknown geometries, are also disclosed.

    摘要翻译: 相控阵超声波检测系统用于检查涡轮盘孔和刀片附件的不连续性,如应力腐蚀开裂。 尽管它们具有相对复杂的几何形状,例如轴向入口刀片附件和相关联的圆盘孔,该系统特别适用于对部件执行准确和有效的检查。 该系统包括具有计算机的控制系统和用于通过至少一个二维相控阵探头编程,发射和控制超声波束的控制器,从而精确地检查感兴趣的区域,同时容纳上述复杂几何形状的盘 或刀片附件。 梁的计算机控制允许减少检查位置的数量和减少不同探头楔块的数量,从而有效,及时地进行检查。 还公开了已知和未知几何形状的涡轮机部件的轮廓和检查方法。

    Steam turbine inlet sleeve inspection apparatus and method
    33.
    发明授权
    Steam turbine inlet sleeve inspection apparatus and method 有权
    蒸汽轮机进口套筒检查装置及方法

    公开(公告)号:US06487922B1

    公开(公告)日:2002-12-03

    申请号:US09669783

    申请日:2000-09-25

    IPC分类号: G01N2910

    摘要: An inspection apparatus (40) for remote inspection of the trepan radius area (34) of the inlet sleeve (24) of a steam turbine (10). The apparatus (40) provides a sealed volume (50) between a pair of inflatable bladders (46,48) for the introduction of a liquid couplant for the immersion of ultrasonic transducers (42,44). A laser line generator (62) generates a beam of light visible through camera (60) which impinges upon the inlet bell seal (30) when the apparatus (40) is in a proper inspection position within the inlet sleeve (24). Guide vanes (56) provide centering and generate an insertion force during air assisted insertion of apparatus (40). Transducers (42,44) are indexed axially and circumfretially by the independent rotation of axial drive gear (72) and longitudinal drive gear (70) engaged with a pattern of gear teeth (69) formed as a combination of circumferential spur gear teeth and axial rack gear teeth cut into a single surface of a spline shaft (68).

    摘要翻译: 一种用于远程检查蒸汽涡轮机(10)的入口套管(24)的平板半径区域(34)的检查装置(40)。 装置(40)在一对可充气气囊(46,48)之间提供密封的体积(50),用于引入用于浸没超声换能器(42,44)的液体耦合剂。 当设备(40)处于入口套筒(24)内的适当检查位置时,激光线发生器(62)产生通过照相机(60)可见的光束,该光束撞击入口钟形密封件(30)。 导向叶片(56)在空气辅助插入装置(40)期间提供定心并产生插入力。 传感器(42,44)通过轴向驱动齿轮(72)和纵向驱动齿轮(70)的独立旋转轴向和圆周地转位,该纵向驱动齿轮(70)与形成为圆周正齿轮齿的组合的齿轮齿(69)和轴向驱动齿轮 齿条齿切割成花键轴(68)的单个表面。