REQUIREMENTS FOR THE MIDDLE ULTRASCHALL TEST

摘要

The invention relates to a device for inspecting pipes using ultrasound, in particular for inspecting the end regions of a pipe. Said device comprises at least one ultrasonic inspection head ( 38 ) with an inspection tank ( 24 ), which a) has a receiving chamber ( 26 ) that is designed to receive a coupling fluid, in particular water ( 27 ), b) forms an axial passage through which a pipe ( 20 ) that is to he inspected can be transported along an inspection line ( 28 ) relative to the inspection tank ( 24 ) c) has sealing elements at the front and rear ( 34, 36 ), said elements being adapted to the external diameter of the pipe ( 20 ) that is to be inspected and delimiting the receiving chamber ( 26 ), and d) contains the inspection head(s) ( 38 ) in such a way that only coupling fluid is present between the inspection head ( 38 ) and the pipe ( 20 ) that is to be inspected. The device also comprises a cylindrical mandrel ( 22 ), whose external diameter is adapted to the external diameter of the pipe ( 20 ) to be inspected and which has a front seal ( 42 ) on its front face that forms a tight seal with a first front face of the pipe ( 20 ) to be inspected. The length of said mandrel is greater than the clearance between the two sealing elements ( 34, 36 ).