Electric heating – Metal heating – By arc
Patent
1994-10-31
1997-03-18
Hoang, Tu B.
Electric heating
Metal heating
By arc
73847, 376245, 376260, B23K 2600
Patent
active
056119488
ABSTRACT:
Apparatus and method for remotely positioning a probe, such as an examination or repair probe, in a tubular member. The tubular member may be a nuclear steam generator heat transfer tube to be examined or repaired by the probe. The probe is connected to a conduit which supports the probe as the probe advances along the inner diameter of the tube to the location of the tube requiring examination or repair. The conduit has a portion thereof wound about a take-up reel. As the probe and conduit advance in the tube, it unwinds from about the take-up reel. However, as the conduit unwinds from about the take-up reel, it may tend to develop a "kinked", twisted or contorted region therein inducing torsional stress in the conduit. Such torsional stress may be severe enough to break the conduit. The apparatus of the invention includes a gripper capable of gripping the conduit and also includes a rotator connected to the gripper for rotating both the gripper and the conduit gripped thereby. As the rotator rotates the gripper, the gripper and a portion of the conduit simultaneously rotate for removing the contorted region, so that the torsional stress induced in the conduit is relieved.
REFERENCES:
patent: 3926040 (1975-12-01), Cowell
patent: 4253914 (1981-03-01), Fogelberg
patent: 4507082 (1985-03-01), Wardlow, III
patent: 4567012 (1986-01-01), Radcliff
patent: 4633177 (1986-12-01), David et al.
patent: 4639994 (1987-02-01), Cooper, Jr. et al.
patent: 4643029 (1987-02-01), Klinvex
patent: 4649989 (1987-03-01), Vermaat et al.
patent: 4694677 (1987-09-01), Rabe
patent: 4856354 (1989-08-01), Overbay
patent: 4978834 (1990-12-01), Griffaton
patent: 4989581 (1991-02-01), Tamburrino et al.
patent: 5000681 (1991-03-01), Zafred et al.
patent: 5023046 (1991-06-01), Speight
patent: 5061176 (1991-10-01), Zafred et al.
patent: 5355063 (1994-10-01), Boone et al.
patent: 5396525 (1995-03-01), Domy et al.
Hoang Tu B.
Mills Gregory L.
Stevens Walter S.
Westinghouse Electric Corporation
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