Welded joint in segmented sheath for compressed gas insulated tr

Details Welded joint in segmented sheath for compressed gas insulated tr Welded joint in segmented sheath for compressed gas insulated tr

1977-03-18

1979-08-14

Phillips, Charles E.

Pipes and tubular conduits

Longitudinally seamed

Sectional

138164, 138171, F16L 902

Patent

active

041642430

ABSTRACT:
A weld-joint in a segmented sheath of a large diameter, high voltage, compressed gas insulated transmission line includes longitudinal, radially aligned outer margins forming a longitudinal seam of joined sheath sections, an internally disposed recess offset from the joined margins, a longitudinal tongue overlapping the joined outer margins and mating with the recess, and a longitudinal sealing gasket, preferably an elastomeric tube, disposed in the region between the tongue and the tongue-receiving recess. A hollowed cutaway section is provided within the joint and aligned with the radial margins to form an enclosed cavity. A longitudinal ridge is provided along the sealing gasket for spacing and protecting the gasket. The end of the tongue and the adjacent walls of the internally disposed recess form together a Vee grove for trapping loose particles internal of the tubular enclosure formed by the joined sheath sections. The enclosed cavity and sealing gasket promote a strong, full penetration weld along the seam.

REFERENCES:
patent: 1332932 (1920-03-01), Sussman
patent: 2732229 (1956-02-01), Gaum
patent: 3508766 (1970-04-01), Kessler et al.
patent: 3704901 (1972-12-01), Borner
patent: 3864507 (1975-02-01), Fox et al.

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