Blowout preventer ram actuating mechanism

Details Blowout preventer ram actuating mechanism Blowout preventer ram actuating mechanism

E - Fixed Constructions

21

B

E21B 33/06 (2006.01)

Patent

CA 2342387

A ram actuating mechanism 20 for a blowout preventer 10, the ram actuating mechanism 20 including a hydraulic booster for enhancing the ram closing force, The ram actuating mechanism 20 may be compatible for use with primary pistons 25 which includc internat moving components, such as self locking pistons. The rarn actuating mechanism 20 providing a hydraulic booster without increasing the diameter of the booster pistons above the diameter of the primary piston, such that BOP stack height need not be increased to accommodate a relatively large diameter hydraulic booster. The ram actuating mechanism 20 may utilize the same piston housing 60 as used by the primary piston, and the booster pistons 26, 28 may act mechanically in series upon the primary piston 25 to increase axial ram closing force The ram actuating mechanism 20 may be capable of retro- fitting existing ram actuating mechanisms.

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