Pipe flaw detector
First Claim
1. A detector for detecting a location of a flaw on a tubular member, the tubular member having a longitudinal axis, the detector comprisinga body, a dial rotatably mounted to the body, the dial with direction indications thereon for indicating position of the dial with respect to the longitudinal axis of the tubular member, ultrasonic probe apparatus secured to the dial for selective positioning by rotating the dial for facilitating location of a flaw of the tubular member, a coupling device mounted to the body beneath the ultrasonic probe apparatus, the coupling device containing coupling fluid, wherein the coupling device rotates with the dial, wherein the tubular member has an outer curved surface and the coupling device includes a flexible member for contacting the outer curved surface of the tubular member and for conforming thereto to facilitate operation of the ultrasonic probe apparatus, roller apparatus on the body for facilitating movement of the body over a surface of the tubular member, the roller apparatus comprising two spaced-apart pairs of spaced-apart rotatable rollers, said pairs of spaced-apart rotatable rollers for aligning the body with the longitudinal axis of the tubular member by placing the rotatable rollers in contact with the tubular member, and access apparatus for introducing coupling fluid into the coupling device and for evacuating coupling fluid from the coupling device.
1 Assignment
0 Petitions
Accused Products
Abstract
A detector for detecting a location of a flaw on a tubular member, the tubular member having a longitudinal axis, the detector having a body, dial rotatably mounted to the body, the dial with directions indications thereon for indicating position of the dial with respect to the longitudinal axis of the tubular member, and ultrasonic probe apparatus secured to the dial for selective positioning by rotating the dial for facilitating location of a flaw of the tubular member; and, in certain aspects, detectors for measuring tubular wall thickness.
49 Citations
17 Claims
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1. A detector for detecting a location of a flaw on a tubular member, the tubular member having a longitudinal axis, the detector comprising
a body, a dial rotatably mounted to the body, the dial with direction indications thereon for indicating position of the dial with respect to the longitudinal axis of the tubular member, ultrasonic probe apparatus secured to the dial for selective positioning by rotating the dial for facilitating location of a flaw of the tubular member, a coupling device mounted to the body beneath the ultrasonic probe apparatus, the coupling device containing coupling fluid, wherein the coupling device rotates with the dial, wherein the tubular member has an outer curved surface and the coupling device includes a flexible member for contacting the outer curved surface of the tubular member and for conforming thereto to facilitate operation of the ultrasonic probe apparatus, roller apparatus on the body for facilitating movement of the body over a surface of the tubular member, the roller apparatus comprising two spaced-apart pairs of spaced-apart rotatable rollers, said pairs of spaced-apart rotatable rollers for aligning the body with the longitudinal axis of the tubular member by placing the rotatable rollers in contact with the tubular member, and access apparatus for introducing coupling fluid into the coupling device and for evacuating coupling fluid from the coupling device.
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5. A detector for detecting a location of a flaw on a tubular member, the tubular member having a longitudinal axis, the detector comprising
a body, a dial rotatably mounted to the body, the dial with direction indications thereon for indicating position of the dial with respect to the longitudinal axis of the tubular member, and ultrasonic probe apparatus secured to the dial for selective positioning by rotating the dial for facilitating location of a flaw of the tubular member, a roller apparatus on the body for facilitating movement of the body over a surface of the tubular member, the roller apparatus comprising two spaced-apart pairs of spaced-apart rotatable rollers and wherein the spaced-apart rotatable rollers of each pair of spaced-apart rotatable rollers are sufficiently spaced-apart to align the body with the longitudinal axis of the tubular member when the rotatable rollers are in contact with the tubular member.
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16. A method for detecting a location of a flaw on a tubular member having a longitudinal axis, the method comprising
positioning a detector on an outer surface of the tubular member, the detector comprising a body, a dial rotatably mounted to the body, the dial with direction indications thereon for indicating position of the dial with respect to the longitudinal axis of the tubular member, ultrasonic probe apparatus secured to the dial for selective positioning by rotating the dial for facilitating location of a flaw of the tubular member, and a roller apparatus for facilitating movement of the body over a surface of the tubular member, the roller apparatus comprising two spaced-apart pairs of spaced-apart rotatable rollers and wherein the spaced-apart rotatable rollers of each pair of spaced-apart rotatable rollers are sufficiently spaced-apart to align the body with the longitudinal axis of the tubular member when the rotatable rollers are in contact with the tubular member, rotating the dial of the detector to selectively position the ultrasonic probe apparatus with respect to the longitudinal axis of the tubular member, and locating a flaw with the detector.
Specification