Siemens Aktiengesellschaft

Heinz Jacob

Helmar Adams

Georg Boegelein

Peter Hertel

An ultrasonic sensor for testing tubes of a heat exchanger having a U-shaped tube bundle includes a probe head unit having an ultrasonic vibrator and two opposite ends. Two flexible hollow shafts are each connected to a respective one of the ends of the probe head unit. One of the hollow shafts is rotatably supported in a guide tip and the other of the hollow shafts is rotatably supported in a cylindrical sheath. An electric drive unit is connected to and fixed against torque relative to the other hollow shaft. The flexible hollow shafts have supports at predetermined axial intervals. A sealing body is connected to the cylindrical sheath for sealing off a flow of a fluid for coupling the ultrasonic vibrator and a pusher hose is also connected to the cylindrical sheath.

Ultrasonic sensor for testing U-shaped tubes of a heat exchanger

A device for eddy current testing of tubes of a heat exchanger having a U-shape tube bundle includes a test sensor having an insertion tip and a longitudinal axis. Elastic hose pieces are connected to the insertion tip. At least three coils are disposed along the elastic hose pieces. A pusher hose is connected to the elastic hose pieces. A pusher device is connected to the pusher hose for inserting the pusher hose into a tube of a tube bundle. The coils have contact surfaces each extending over only a portion of the inner periphery of the tube of the tube bundle. The coils are staggered about the circumference of the test sensor and are staggered along the longitudinal axis of the test sensor. A location recognition unit is disposed in the test sensor.

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Memmelsdorf, Germany

Heinz Jacob