A MECHANICAL ARRANGEMENT FOR PROVIDING ROTARY DRIVE

摘要

A mechanical arrangement for providing rotary drive into a vessel containing high-pressure gas from a motive source (10) which is exposed to atmospheric pressure, wherein a housing of the motive source is sealed against one end of an elongate outer part (34) of a drive arrangement and the vessel is sealed against another end of the elongate outer part such that a high-pressure enclosure is provided, itself comprising the vessel housing, the housing of the motive source (10) and the outer part (34) of the drive arrangement (30).