Bent tube inspection probe with a rotary inspection head

Details Bent tube inspection probe with a rotary inspection head Bent tube inspection probe with a rotary inspection head

1991-10-29

1994-05-24

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

324220, 324226, 376249, 376252, G01N 2924

Patent

active

053138384

ABSTRACT:
This probe comprises a cable (4) and a probe head (6) fixed to one end of the cable and having an inspection head (18) provided with transmission-reception means (22, 24) for inspection signals from a tube (2), a support (20) on which the inspection head is mounted in rotary manner, a motor (66) for rotating the inspection head, an encoder associated with the motor for determining the circumferential extent of faults which the tube may have, and a rotary collector (10) between the motor and the support in order to ensure a mechanical connection between the motor and the inspection head and the transmission of control signals for the said means (22, 24) and signals supplied by the latter. Articulated mechanical connections (14, 16) are provided between the motor and the collector and between the collector and the inspection head. A sheath which is flexible in flexion and rigid in torsion join together the support, the stator of the motor and the stator of the collector and prevents circumferential displacements thereof. Application to the inspection of heat exchanger tubes.

REFERENCES:
patent: 3483466 (1969-12-01), Crouch et al.
patent: 4153875 (1979-05-01), Pigeon et al.
patent: 4412315 (1983-10-01), Flournoy
patent: 4460920 (1984-07-01), Weber et al.
patent: 4807484 (1989-02-01), Goedecke
"IRIS--Internal Rotary Inspection System" by M. E. Rentler, Materials Evaluation (Jul. 1983) pp. 884-886.

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