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Ultrasonic pipe inspection system

  • US 5,174,155 A
  • Filed: 03/06/1991
  • Issued: 12/29/1992
  • Est. Priority Date: 03/07/1990
  • Status: Expired due to Fees
First Claim
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1. An ultrasonic pipe inspection system comprising:

  • an inner sleeve including at least one opening;

    an outer sleeve disposed in coaxial relation to said inner sleeve, said outer sleeve having a substantially cylindrical inner surface and cooperating with said inner sleeve to define an annular passage therebetween;

    means for rotating said inner sleeve and said outer sleeve together;

    means for providing a contact medium, said contact medium being introduced to said annular passage and injected to a test piece through said at least one opening of said inner sleeve while the test piece is passing axially through said inner sleeve; and

    means for transmitting ultrasonic waves to the test piece to detect flaws therein, said means for transmitting ultrasonic waves including at least one probe unit in radial alignment with said at least one opening of the inner sleeve;

    said at least one probe unit extending radially from the inner surface of said outer sleeve toward said at least one opening.

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