Blowout preventer with lock

Details Blowout preventer with lock Blowout preventer with lock

E - Fixed Constructions

21

B

E21B 33/06 (2006.01)

Patent

CA 2711654

A lock for a ram shaft of a blowout preventer has a ram shaft controlled by an actuator, the ram shaft having a ram block end and a locking end, the locking end having an internal cavity that extends along an axis of the ram shaft, and a locking pin in the internal cavity. The locking pin has a release position retracted into the internal cavity, and a locking position extending from the internal cavity. A rotational stop engages the ram shaft and prevents the ram shaft from rotating. A locking pin stop is secured relative to the actuator, the locking pin stop engaging the locking pin in the locking position to prevent axial movement of the ram shaft.

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