Seal for underwater cable joint

Details Seal for underwater cable joint Seal for underwater cable joint

1998-08-10

2000-02-22

Palmer, Phan T. H.

Optical waveguides

Optical transmission cable

385134, 385110, 385135, G02B 644

Patent

active

060289740

ABSTRACT:
A cable junction is provided for connecting two optical cables (110) submerged underwater, having a casing (130), an anchorage (120), a casing loading ring (150), an anchorage loading ring (145) and a seal ring (140). The casing (130) has a casing sealing surface (153). The anchorage (120) is arranged in the casing (130), and has an anchorage sealing surface (157). Circular ridges (260, 263) are provided in the casing sealing surface (153) and the anchorage sealing surface (157), respectively, for embedding into the seal ring (140). The anchorage (120) is rotatably coupled to the casing (130) by an anchorage/casing threaded joint (133). The casing loading ring (150) has a casing loading ring sealing surface (150a). The anchorage loading ring (145) has an anchorage loading ring sealing surface (145a). The seal ring (140) is arranged between the casing sealing surface (153) and the casing loading ring sealing surface (150a), and also arranged between the anchorage sealing surface (157) and the anchorage loading ring sealing surface (145a) for preventing hydrogen from entering the cable junction. The seal ring (140) is preferably made from a metal material such as copper, however, the scope of the invention is not intended to be limited to any particular material.

REFERENCES:
patent: 4773729 (1988-09-01), Mignien
Hydrogen Transport In Austenitic Stainless Steel by M.R. Louthan, Jr., and R.G. Derrick, Corrosion Science, 1975, vol. 15, pp. 565-577.
Vacuum Sealing Techniques by A. Roth, Copyright 1994 by American Institute of Physics, pp. 427-437.
Working Strength of Bolts, Machinery's Handbook, 1990, 23rd Ed., 4th printing by Industrial Press, Inc., pp. 1278-1279.

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