Measuring and testing – Vibration – By mechanical waves
Patent
1988-05-20
1990-02-20
Chapman, John
Measuring and testing
Vibration
By mechanical waves
G01N 2904
Patent
active
049015788
ABSTRACT:
Probe carrier drive assembly for moving a probe carrier without slip or creep in a steam generator tube so that a probe, which has an inspection device attached thereto and which is connected to the probe carrier, selectively rotates in place, follows a linear scanning path through the tube or follows a helical scanning path having a variable pitch. The probe carrier drive assembly comprises an elongated circular member and a drive mechanism engaging the elongated circular member for moving the elongated circular member axially and rotatably within the tube. The drive assembly further comprises motors coupled to the drive mechanism for operating the drive mechanism and includes a controller operatively coupled to the motors for operating the motors so that the elongated circular member selectively rotates in place, follows a linear path in the tube or follows a helical path having a variable pitch.
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Co-pending patent application Ser. No. 26,363, filing date Mar. 16, 1987, in the name of James W. Everett entitled "Double Gimbal Camlock Installation Assembly", assigned to the Westinghouse Electric Corporation.
NUCON Engineering and Control B.V., Inspection and Plant Services, "Inspection of Steam Generator Tubes with Ultrasonic Technique (The NUCON Nerason System)", Document No. I9530-00-003, Issue No. 3, Feb. 1986.
Inland Motor, Division Kollmorgan Corp. sales brochures, "High Performance DC Brushless Motors 01200 Series" and Brushless Motors Application Guide.
Chapman John
Simons Michele
Stevens Walter S.
Westinghouse Electric Corp.
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