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Title: Flexible ultrasonic pipe inspection apparatus

Abstract

A flexible, modular ultrasonic pipe inspection apparatus, comprises a flexible, hollow shaft that carries a plurality of modules, including at least one rotatable ultrasonic transducer, a motor/gear unit, and a position/signal encoder. The modules are connected by flexible knuckle joints that allow each module of the apparatus to change its relative orientation with respect to a neighboring module, while the shaft protects electrical wiring from kinking or buckling while the apparatus moves around a tight corner. The apparatus is moved through a pipe by any suitable means, including a tether or drawstring attached to the nose or tail, differential hydraulic pressure, or a pipe pig. The rotational speed of the ultrasonic transducer and the forward velocity of the apparatus are coordinated so that the beam sweeps out the entire interior surface of the pipe, enabling the operator to accurately assess the condition of the pipe wall and determine whether or not leak-prone corrosion damage is present. 7 figs.

Inventors:
;
Issue Date:
Research Org.:
Westinghouse Savannah River Co
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
672528
Patent Number(s):
5,770,800
Application Number:
PAN: 8-659,598
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; SCA: 420205; PA: EDB-98:120631; SN: 98002024883
DOE Contract Number:  
AC09-89SR18035
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 23 Jun 1998
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; PIPES; INSPECTION; ULTRASONIC TESTING; MEASURING INSTRUMENTS; DESIGN; WALLS; CORROSION PRODUCTS; DETECTION

Citation Formats

Jenkins, C.F., and Howard, B.D. Flexible ultrasonic pipe inspection apparatus. United States: N. p., 1998. Web.
Jenkins, C.F., & Howard, B.D. Flexible ultrasonic pipe inspection apparatus. United States.
Jenkins, C.F., and Howard, B.D. Tue . "Flexible ultrasonic pipe inspection apparatus". United States.
@article{osti_672528,
title = {Flexible ultrasonic pipe inspection apparatus},
author = {Jenkins, C.F. and Howard, B.D.},
abstractNote = {A flexible, modular ultrasonic pipe inspection apparatus, comprises a flexible, hollow shaft that carries a plurality of modules, including at least one rotatable ultrasonic transducer, a motor/gear unit, and a position/signal encoder. The modules are connected by flexible knuckle joints that allow each module of the apparatus to change its relative orientation with respect to a neighboring module, while the shaft protects electrical wiring from kinking or buckling while the apparatus moves around a tight corner. The apparatus is moved through a pipe by any suitable means, including a tether or drawstring attached to the nose or tail, differential hydraulic pressure, or a pipe pig. The rotational speed of the ultrasonic transducer and the forward velocity of the apparatus are coordinated so that the beam sweeps out the entire interior surface of the pipe, enabling the operator to accurately assess the condition of the pipe wall and determine whether or not leak-prone corrosion damage is present. 7 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {6}
}