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    • 3. 发明申请
    • Pipe Bending for Reel-Lay Operations
    • 管道弯曲作业
    • US20160030991A1
    • 2016-02-04
    • US14775545
    • 2014-03-10
    • ACERGY FRANCE SAS
    • Stephane Bombino
    • B21D9/03
    • B21D9/03B21D9/18F16L1/20
    • A method and an apparatus bend a pipe to mitigate internal wrinkling, with particular benefit when bending a lined pipe upon spooling. Bending is performed continuously by advancing the pipe through a bending zone while an internal mandrel is held at the bending zone to resist wrinkling In one variant, the mandrel includes longitudinally-spaced pipe-engaging elements and a tensile link between the elements allows relative movement between the elements. A hold-back connection on one of the elements applies hold-back force to that element to be transmitted to the other element via the tensile link. In another variant, the mandrel includes an elongate pipe-engaging body with a hold-back connection at one end of the body. The body is flexible to bend with the pipe and is shaped to engage an inner surface of the pipe along most of the length of the body.
    • 一种方法和设备弯曲管道以减轻内部起皱,特别有利于在卷绕后弯曲衬里管道。 通过使管道通过弯曲区域而连续地进行弯曲,同时内部心轴保持在弯曲区域以抵抗皱纹。在一个变型中,心轴包括纵向间隔开的管接合元件,并且元件之间的拉伸连接允许相对运动 元素。 在其中一个元件上的保持连接对该元件施加保持力以通过拉伸链接传递到另一元件。 在另一个变型中,心轴包括细长的管接合体,其在身体的一端具有保持连接。 主体是柔性的,可与管道一起弯曲,并且成形为沿着主体的大部分长度与管道的内表面接合。