Boss seal for composite overwrapped pressure vessel

摘要

A pressure vessel is disclosed. The pressure vessel may include a boss, a liner, an O-ring, and a composite overwrap of shell. A boss may comprise a through aperture, a first groove encircling the through aperture, and a first engagement mechanism. A liner may comprise an interior surface, exterior surface, and a second engagement mechanism. The interior surface may define an interior cavity of the pressure vessel. The second engagement mechanism may mechanically engage the first engagement mechanism to secure the liner to the boss. An O-ring may be positioned within the first groove of the boss and abut the exterior surface of the liner. A composite overwrap may surround the liner and at least a portion of the boss.

主权项

1. A method of manufacturing a pressure vessel, the method comprising:
positioning a boss as an insert within a mold, the boss comprising a through aperture, a first groove encircling the through aperture, an engagement mechanism, and an O-ring positioned within the first groove; molding, within the mold after the positioning, a polymeric container such that a portion of the polymeric container is molded directly against the O-ring; the molding comprising engaging, by polymeric material of the polymeric container, the engagement mechanism to secure the polymeric container to the boss; and removing, after the molding, the boss and polymeric container as a unit from the mold.