Coupling device for submarine pipeline system

Valves and valve actuation – With correlated flow path – Valve operated by joining flow path sections

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285 96, 2851372, 285920, F16L 3728

Patent

active

046964533

ABSTRACT:
A demountable coupling device for submarine pipeline sections (33,34,35) where one or a plurality of conduits can be connected together on the seabed by a remotely controlled operation without the use of divers or guidewires. The connection of the pipeline sections, which are provided with square flanges (2), takes place by a vertical movement of the coupling unit (1) of the coupling device, which is provided with a groove (1') at each of its ends, the grooves being adapted for reception of the largely vertical portions of the pipeline flanges (2) when in an operating position on the seabed. The casing (1) of the coupling unit contains all components which are necessary for the connections. Once the C-shaped groove of the coupling unit are engaged by the pipeline flanges (2), connection takes place by moving the telescopically displaceable connecting tubes of the casing into corresponding bushings in the respective conduits of the pipeline flanges (2), in that a sealing system ensures effective seal tightening. The coupling operation is reversible, and mounting can take place independent of the order of the demounting. To achieve a prestressing of the respective pipeline flanges against the coupling unit, prestressing devices are placed in the casing of the coupling (1). The coupling is secured by means of a locking mechanism.

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