A production method of a fiberglass pressure vessel comprises the following steps: S1. Dividing a blow needle into several sections, and fixing threaded connectors to the uppermost section and the lowermost section of the blow needle respectively; S2. Connecting the segmented blow needle into a whole and fixing it below an extrusion port of a liner molding material, and extruding the liner material by a blow molding machine to a position where the blow needle is completely covered; S3. Closing the mold, and after mold closing is completed, feeding high-pressure gas through the lower part of the blow needle for pressure maintaining to fully mold the liner; S4. Opening the mold and unscrewing the blow needle. The pressure vessel produced by the invention has an integrated liner, with pressure-bearing and sealing performance equivalent to that of a single-head threaded pressure vessel; the process features high productivity and high product qualification rate, requires no subsequent processing, and meets the needs of large-scale production.
Country Code: CN
Application Number: CN200810035313.5
