UNDERWATER ACTUATOR AND SUBMERSIBLE PROVIDED WITH SAME

An underwater actuator includes: a housing to be immersed under water; a cylinder chamber formed in the housing; a piston accommodated in the cylinder chamber such that the piston is movable in a sliding manner in the cylinder chamber, the piston dividing the cylinder chamber into a first pressure r...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OKADA, Takashi, TACHINAMI, Fumitaka, SAKAUE, Hiroshi, MUKAIDA, Minehiko, OKAYA, Noriyuki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING EQUIPMENT FOR DWELLING OR WORKING UNDER WATER FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS LIFE-SAVING IN WATER LIGHTING MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	An underwater actuator includes: a housing to be immersed under water; a cylinder chamber formed in the housing; a piston accommodated in the cylinder chamber such that the piston is movable in a sliding manner in the cylinder chamber, the piston dividing the cylinder chamber into a first pressure receiving chamber and a second pressure receiving chamber; a rod extending from the piston to the first pressure receiving chamber side, the rod penetrating the housing; a release chamber formed in the housing, the release chamber having an internal pressure kept lower than a water pressure of outside of the housing; and a switching mechanism including: a first switcher configured to switch a communication state between the second pressure receiving chamber and the outside of the housing to allow or block communication therebetween; and a second switcher configured to switch a communication state between the second pressure receiving chamber and the release chamber to allow or block communication therebetween.