METALLIC LINER PRESSURE VESSEL COMPRISING POLAR BOSS

摘要

The present invention provides a Type 3 pressure vessel comprising a polar boss that is attached to a metallic liner and provides reinforced static strength, fatigue strength, endurance, chemical resistance and/or corrosion resistance of the liner orifice or neck region. In particular, the material of the polar boss has higher static strength, fatigue strength, endurance, chemical resistance and/or corrosion resistance relative to that of the liner material.

主权项

1. A metal lined composite overwrapped pressure vessel comprising:
(a) a liner constructed from a metallic material and comprising:
(i) a liner orifice;(ii) a liner neck region surrounding said orifice and having an outer surface; and(iii) a liner polar region surrounding said liner neck region; and (b) a polar boss constructed of a second material and attached to said liner neck region of said metallic-liner, wherein said polar boss comprises:
(i) a polar boss neck region having an inner surface, wherein at least a portion of the inner surface of said polar boss neck region is attached to at least a portion of the outer surface of said liner neck region;(ii) a passage within said polar boss neck region that is coaxially aligned with said liner orifice; and(iii) a polar boss annular flange that covers at least a portion of said liner polar region, wherein said second material has static strength, fatigue strength, endurance, chemical resistance and/or corrosion resistance greater than that of said metallic material.