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INNER DETECTING DEVICE FOR SUBSEA OIL AND GAS PIPELINE

  • US 20150346154A1
  • Filed: 09/16/2014
  • Published: 12/03/2015
  • Est. Priority Date: 11/23/2013
  • Status: Active Grant
First Claim
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1. An inner detecting device for subsea oil and gas pipeline, comprising:

  • a support shaft defining a sealed chamber therein;

    a packer cup coupled to the support shaft along a circumferential direction of the support shaft;

    a hinge assembly coupled to the support shaft, swinging with respect to the support shaft in a radial direction of the support shaft and sliding with respect to the support shaft in an axial direction of the support shaft;

    a magnetic detector connected to the hinge assembly to move with respect to the support shaft in the radial and axial directions of the support shaft, and the magnetic detector tending to move away from the support shaft in the radial direction of the support shaft;

    a battery pack disposed within the sealed chamber;

    an electric recorder disposed within the sealed chamber and electrically connected to the battery pack; and

    a mileage recorder disposed on the support shaft to record a travel distance of the inner detecting device within the pipeline.

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