ACTUATOR PROVIDED WITH A GEAR BOX, POSITION INDICATOR FOR A GEAR BOX AND RELATED METHODS

ACTUATOR PROVIDED WITH A GEAR BOX, POSITION INDICATOR FOR A GEAR BOX AND RELATED METHODS

An actuator system and method (10) includes a blow out preventer (11), a hydraulic motor (12), a gear box (13) intermediate hydraulic motor (12) and blow out preventer (11), and a position indicator (14). Gear box (13) has an input (19), an output (20), and a gear set (23). Gear set (23) is biased b...

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Hauptverfasser: FISHBURN, Bruce, Jay, PAISLEY, Daniel
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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creator FISHBURN, Bruce, Jay
PAISLEY, Daniel
description An actuator system and method (10) includes a blow out preventer (11), a hydraulic motor (12), a gear box (13) intermediate hydraulic motor (12) and blow out preventer (11), and a position indicator (14). Gear box (13) has an input (19), an output (20), and a gear set (23). Gear set (23) is biased by a spring (33) acting on a piston (31) to a default high range gear ratio when blow out preventer (11) is open, to provide maximum closure/lock speed. Gear set (23) is moved by a hydraulic command signal acting on piston (31) to a low range gear ratio when blow out preventer (11) is closed/locked, to provide maximum torque to move blow out preventer (11) toward its open position. Position indicator (14) shows the actual position of blow out preventer (11) independent of the number of turns of input (19) to move the blow out preventer.
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subjects EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
title ACTUATOR PROVIDED WITH A GEAR BOX, POSITION INDICATOR FOR A GEAR BOX AND RELATED METHODS
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