APPARATUS FOR ULTRASONIC TESTING OF TUBES Russian patent published in 2005 - IPC

FIELD: non-destruction testing of tubes.

SUBSTANCE: apparatus includes bath; mechanism for filing bath with water and piezoelectric transducers; at least two mechanisms for clamping and centering transducers relative to lengthwise axis of tested tube; bath motion mechanism. Each mechanism for clamping and centering is in the form of framework to which transducers are secured; and system of shafts, levers, supports and stops. Each framework is provided with individual drive unit, for example in the form of pneumatic cylinder and it is hinge-mounted with possibility of plane-parallel motion in space depending upon diameter of tube and its real arrangement relative to bath axis. Bath has two chambers; in each chamber at least one framework with transducers is arranged. Mechanism for moving bath is in the form of cantilever type lifting apparatus having frame and upper and lower plates joined with frame; bracket supporting bath; screw with nut mounted on bracket and joined with shaft of reduction gear motor mounted on upper plate; guides joining upper and lower plates. Mechanism for filling bath with water includes hydraulic accumulators whose working cavities are communicated with bath and with water supply system; drive unit, for example in the form of pneumatic cylinders.

EFFECT: enhanced effectiveness and reliability of tube testing process.

5 dwg