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Device for ultrasonic weld seam testing of longitudinally welded pipes for longitudinal and transversal errors

  • US 6,931,931 B2
  • Filed: 07/04/2002
  • Issued: 08/23/2005
  • Est. Priority Date: 07/05/2001
  • Status: Expired due to Fees
First Claim
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1. A device for ultrasonic weld seam testing of a longitudinally welded pipe, in particular a large pipe, for longitudinal and transverse flaws, comprising:

  • a swingably suspended first test carriage, movable on a surface of a pipe on one side next to a weld seam, for longitudinal flaw inspection; and

    a swingably suspended second test carriage, disposed in alignment with a center of the weld seam and movable on the surface of the pipe, for transverse flaw inspection, wherein each of the first and second test carriages includes a mount for accommodating at least one test head, which has an oscillator, and at least, one coupling medium connection having a channel which ends in an area of the oscillator and has an outlet zone configured in the form of a nozzle which is secured to the mount, wherein the test head for longitudinal flaw inspection is constructed for arrangement in different, fixed and predefined angle positions at a variable distance to the nozzle in the mount, and wherein the mount for the test head for transverse flaw inspection is arranged at a variable distance to the surface of the pipe in a support element.

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