Pipeline bend detector pig
    3.
    发明授权
    Pipeline bend detector pig 失效
    管道弯曲检测器猪

    公开(公告)号:US5205048A

    公开(公告)日:1993-04-27

    申请号:US796065

    申请日:1991-11-20

    IPC分类号: F16L55/28 G01B5/20

    CPC分类号: F16L55/28 G01B5/20

    摘要: A pipeline bend detector pig for measuring a bend in pipeline is disclosed, the pig having an elongated flexible body for transposition through the pipeline. The body has an imaginary central axis that substantially remains coaxial with the pipeline cylindrical axis as the body transverses the interior of the pipeline. First and second length-measuring cables are supported to the body, each in a radial plane of and spaced from the body central axis and spaced angularly from each other. Each length-measuring cable has one end affixed to the body and a free end. Each cable has spring tension applied to the free end thereof to keep the cable taunt. A variable electrical resistance element is actuated by the free end of each cable as the free ends of the cables are moved by bends in the pipeline. An odometer for measuring the distance of travel of the pig is provided. A solid state memory records the distance traveled and the occurrence of bends in the pipeline.

    摘要翻译: 公开了一种用于测量管道中的弯管的管道弯曲检测器猪,该猪具有用于通过管道移位的细长的柔性体。 主体具有假想的中心轴线,当主体横过管道内部时,该轴线基本上保持与管道圆柱轴线同轴。 第一和第二长度测量电缆被支撑到主体,每个在主体中心轴线的径向平面中并且与主体中心轴线间隔开并且彼此成角度地间隔开。 每个长度测量电缆的一端固定到主体和自由端。 每个电缆都有弹簧张力施加到其自由端,以保持电缆ta。。 当电缆的自由端通过管道中的弯曲而移动时,可变电阻元件由每个电缆的自由端致动。 提供了用于测量猪的行进距离的里程表。 固态存储器记录行进的距离和管道中的弯曲的发生。