NOZZLE-BOSS FOR HIGH PRESSURE VESSEL

摘要

A nozzle boss for a high pressure vessel that may improve tightness and a combination force by mounting a plurality of sealing plates each having through holes formed therein. To this end, a nozzle boss for a high pressure vessel including an outer shell and a non-metal internal liner formed inside the outer shell, the nozzle boss including: a boss including a pressurizing portion and protruding from an opening of the internal liner towards an outside; a annular flange extending from a central axis of the boss to a radius-increasing direction along one outer circumferential surface of the boss formed on an inside of the outer shell and including one or more sealing attachment grooves and one or more connection grooves formed in a bottom surface of the annular flange; a plate mounting portion disposed in a downward direction of the annular flange and protruding from the inside of the outer shell; a sealing plate mounted on the plate mounting portion, having a plate shape that extends from the central axis of the boss to the radius-increasing direction of the boss and including one or more sealing attachment grooves, one or more connection holes and one or more through holes that perforate top and bottom surfaces of the sealing plate thus being combined with the annular flange via the connection holes and being combined with the internal liner that is depressed into the through holes; and connection pins for combining the sealing plate with the annular flange via the one or more connection grooves and the one or more connection holes.