Scan assembly and method for transferring power and data across

Details Scan assembly and method for transferring power and data across Scan assembly and method for transferring power and data across

1995-07-03

1997-01-14

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

324238, 324240, 324242, 367 25, 367 69, 367 86, G01R 3312

Patent

active

055941761

ABSTRACT:
An ultrasonic scan assembly for use in inspecting downhole gas pipes comprises a sensor section which rotates in relation to an end section that remains essentially level forming a rotating interface. The sensor section includes at least one ultrasonic transducer for transmitting interrogating pulses into a pipe wall and for receiving return pulses that are analyzed for determining the maintenance and repair needs of the gas pipe. Provided in the scan assembly is a rotary transformer for magnetically coupling signals, such as return pulse data or power, across the rotating interface of the scan assembly. The rotary transformer includes a primary winding on one section of the scan assembly and a secondary winding on another section of the scan assembly. The primary windings and secondary windings associated with respective sections of the scan assembly can be placed in parallel or concentric relationship.

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