US6364677B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement in terminating a cable
Assignee: Vetco Gray Scandinavia AS
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Filing: 1998-12-16
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Granted: 2002-04-02
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Expires: 2018-12-16
Abstract
Abstract The present invention relates to a device for terminating cables ( 1 ), particularly for underwater termination of high voltage power cable and for conducting high voltage conductors in an electrical underwater apparatus, with the purpose of providing a liquid and water tight termination, at the same time as it provides pressure relief for vital components. According to this it is suggested that: each high voltage conductor (phase) ( 2 a , 2 b , 2 c ) is terminated in a separate, liquid filled and pressure compensated interior chamber ( 7 a , 7 b , 7 c ); conduction of the high voltage conductor from each interior chamber into attached electrical apparatus is carried out by means of a solid electrical conductor ( 10 a , 10 b , 10 c ), said conductor being fixed in an insulation material ( 11 ) which is liquid and gas tight, the solid electrical conductor and insulation material forming a gas and liquid tight barrier between the cable conductor and attached apparatus, and all interior chambers ( 7 a , 7 b , 7 c ) are adapted to a common, liquid filled and pressure compensated outer chamber ( 4 ).
Inventors
- 👤 Arne Nysveen
- 👤 Svend Roche
- 👤 Felix Greuter
- 👤 Elias Julke
- 👤 Jakob Rhyner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:16
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/08; H02G15/10; H02G15/12; H02G15/14; H02G15/20; H02G15/22; H02G15/02; H02G15/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
197 words
Device for terminating cables ( 1 ), particularly for underwater termination of high voltage power cable and for conducting high voltage conductors in an electrical underwater apparatus, characterized in that each high voltage conductor (phase) ( 2 a , 2 b , 2 c ) is terminated in a separate, liquid filled and pressure compensated interior chamber ( 7 a , 7 b , 7 c ), conduction of the high voltage conductor from each interior chamber into attached electrical apparatus is carried out by means of a solid electrical conductor ( 10 a , 10 b , 10 c ), said conductor being fixed in an insulation material ( 11 ) which is liquid and gas tight, the solid electrical conductor and insulation material forming a gas and liquid tight barrier between the cable conductor and attached apparatus, and all interior chambers ( 7 a , 7 b , 7 c ) are contained in a common, liquid filled and pressure compensated outer chamber ( 4 ), the pressure compensation of the interior chambers ( 7 a , 7 b , 7 c ) is made against the pressure in the outer chamber ( 4 ).
Claim 2
Dependent Claim
197 words
Device for terminating cables ( 1 ), particularly for underwater termination of high voltage power cable and for conducting high voltage conductors in an electrical underwater apparatus, characterized in that each high voltage conductor (phase) ( 2 a , 2 b , 2 c ) is terminated in a separate, liquid filled and pressure compensated interior chamber ( 7 a , 7 b , 7 c ), conduction of the high voltage conductor from each interior chamber into attached electrical apparatus is carried out by means of a solid electrical conductor ( 10 a , 10 b , 10 c ), said conductor being fixed in an insulation material ( 11 ) which is liquid and gas tight, the solid electrical conductor and insulation material forming a gas and liquid tight barrier between the cable conductor and attached apparatus, and all interior chambers ( 7 a , 7 b , 7 c ) are contained in a common, liquid filled and pressure compensated outer chamber ( 4 ), the pressure compensation of the interior chambers ( 7 a , 7 b , 7 c ) is made against the pressure in the outer chamber ( 4 ).
Claim 3
Dependent Claim
17 words
Device according to claim 1 , characterized in that the liquid can be exchanged continuously or discontinuously.
Claim 4
Dependent Claim
27 words
Device according to claim 1 , characterized in that the pressure compensation against seawater is separate for each chamber or common for all of the interior chambers.
Claim 5
Dependent Claim
27 words
Device according to claim 1 , characterized in that parts of the interior and/or outer chamber is partly filled with solid insulation material, in addition to liquid.
Claim 6
Dependent Claim
53 words
Device according to claim 1 , characterized in that the insulation material ( 11 ), where the solid electrical conductor ( 10 a , 10 b , 10 c ) is led into attached apparatus, is shaped in a manner increasing the creeping current distance between the phase conductor and ground (the chamber).
Claim 7
Dependent Claim
48 words
Device according to claim 1 , characterized in that water absorbing material, e.g. molecular sieve, is arranged in the outer chamber ( 4 ), and a such water absorbing material possibly also is arranged in the interior chambers ( 7 a , 7 b , 7 c ).
Claim 8
Dependent Claim
21 words
Device according to claim 1 , characterized in that the liquid in the interior and outer chamber is a dielectric liquid.
Claim 9
Dependent Claim
72 words
Device according to claim 1 and 7 , characterized in that at least two sealing devices ( 7 a , 7 b , 7 c , 9 a , 9 b ; 4 , 6 ) are provided between a phase conductor ( 2 a , 2 b , 2 c ) and the surrounding water, said sealing devices ( 4 , 8 ) being separated by means of a dielectrical material.
Claim 10
Dependent Claim
65 words
Device according to claim 1 , characterized in that each phase conductor ( 2 a , 2 b , 2 c ) is filled with a sealing material in order to prevent said liquid from leaking into the phase conductor and to prevent possible water in the phase conductor from penetrating into the interior chamber ( 7 a , 7 b , 7 c ).
Claim 11
Dependent Claim
29 words
Device according to claim 9 , characterized in that the electric field is controlled in the termination zone of the cable insulation by means of geometric or resistive-refractive methods.
Claim 12
Dependent Claim
27 words
Device according to claim 1 , characterized in that the outer sheath ( 3 ) of the cable is terminated in the outer chamber ( 4 ).
Claim 13
Dependent Claim
51 words
Device according to claim 11 , characterized in that a water tight barrier ( 6 ) is arranged between the cable ( 1 ) and the outer chamber ( 4 ), in order to prevent water from penetrating into and prevent liquid from penetrating out of the cable ( 1 ).
Claim 14
Dependent Claim
81 words
Device according to claim 12 , characterized in that a liquid tight barrier is arranged between the outer chamber ( 4 ) and the cable ( 1 ), in order to prevent water in the cable ( 1 ) between the phase conductors ( 7 a , 7 b , 7 c ) from penetrating into the outer chamber ( 4 ), and the liquid in the outer chamber ( 4 ) from penetrating into the cable between the phase conductors.
References Cited (Backward Citations)
US3324449A
Cited
US4174875A
Cited
GB2124038A
Cited
GB2140226A
Cited
US4689440A
Cited
US5171158A
Cited
US5577926A
Cited
US5645442A
Cited
US5722842A
Cited
US5772457A
Cited
US5738535A
Cited
US6017227A
Cited
US5838857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-04-01 | 2005-10-01 | 2006-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-01 | 2009-10-01 | 2010-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-01 | 2013-10-01 | 2014-04-02 | $7700.00 | Window Closed / Lapsed |