| abstract |
A pressure vessel (1) in which a fiber reinforced resin layer (4) made of a reinforced fiber resin (3) which is a reinforced fiber impregnated with a resin is formed on the surface of a container body (2), the fiber reinforced resin layer ( 4) After curing, in order to prestress the container body (2) and the fiber reinforced resin layer (4), the circumferential strain on the container surface is 0.7% or more and 0.9% or less. Is a pressure vessel (1) that stores the high-pressure gas at a filling pressure at which the burst pressure is 2.2 to 2.8 times the filling pressure by plastically deforming (self-tightening) the container body (2) by applying internal pressure to is there. The pressure vessel (1) is excellent in fatigue characteristics and bursting properties and is lightweight, and thus is suitably used for a storage container for high-pressure gas. |