| 摘要 |
PROBLEM TO BE SOLVED: To enhance sealing performance at an interface between a liner and a mouthpiece.SOLUTION: A pressure vessel A includes: a synthetic resin liner 10 constituted by a vessel body part 13 in which the inside is a storage space 12, and a cylindrical part 14 projecting from the vessel body part 13; a mouthpiece 20 attached to an inner periphery of the cylindrical part 14; a seal groove 28 arranged at an interface S between the liner 10 and the mouthpiece 20 and formed on an outer periphery of the mouthpiece 20; and a seal part 16 projecting from an inner peripheral surface of the liner 10 and fitted in the seal groove 28, and having a pressure receiving surface 17 facing the storage space 12 side, and a pressing surface 18 facing a side opposite from the pressure receiving surface 17 and having an area smaller than that of the pressure receiving surface 17. Pressing force of the pressing surface 18 exceeds a fluid pressure acting on the pressure receiving surface 17 when the pressing surface 18 presses an inner surface of the seal groove 28 with the fluid pressure in the storage space 12 acting on the pressure receiving surface 17.SELECTED DRAWING: Figure 1 |
