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Title: Piping inspection instrument carriage with precise and repeatable position control and location determination

An instrument carriage for inspection of piping comprises front and rear leg assemblies for engaging the interior of the piping and supporting and centering the carriage therein, and an instrumentation arm carried by a shaft system running from the front to rear leg assemblies. The shaft system has a screw shaft for moving the arm axially and a spline gear for moving the arm azimuthally. The arm has a pair of air cylinders that raise and lower a plate in the radial direction. On the plate are probes including an eddy current probe and an ultrasonic testing probe. The ultrasonic testing probe is capable of spinning 360[degree] about its axis. The instrument carriage uses servo motors and pressurized air cylinders for precise actuation of instrument components and precise, repeatable actuation of position control mechanisms. 8 figures.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
5180687
Assignee:
Dept. of Energy, Washington, DC () PTO; EDB-94-064962
Patent Number(s):
US 5285689; A
Application Number:
PPN: US 7-730425
Contract Number:
AC09-89SR18035
Resource Relation:
Patent File Date: 16 Jul 1991
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; EDDY CURRENT TESTING; MATERIALS HANDLING EQUIPMENT; PIPES; INSPECTION; ULTRASONIC TESTING; ACTUATORS; POSITIONING; SUPPORTS; ACOUSTIC TESTING; ELECTROMAGNETIC TESTING; EQUIPMENT; MATERIALS TESTING; MECHANICAL STRUCTURES; NONDESTRUCTIVE TESTING; TESTING; 420500* - Engineering- Materials Testing