HIGH PRESSURE VESSEL Russian patent published in 1999 - IPC

FIELD: storage, distribution and transportation of liquid and gases; high-pressure vessel having cases made from composite materials; automotive industry; transport facilities working on gaseous fuel. SUBSTANCE: high-pressure vessel has metal envelope, at least one neck and load-bearing housing mounted on the outside; this housing consists of two layers of composite material. Hermetic load-bearing layer embracing the metal envelope is made from woven reinforcing material (A₁) impregnated with binder (C₁) at ratio A₁:C₁ equal to (40-70):(30-60); ratio of relative elongation at rupture of material A₁ to relative elongation of hardened binder C₁ ranges from 1 to 4. In particular case, load-bearing layer located above hermetic load-bearing layer may be made from unidirectional reinforcing material A₂ impregnated with binder C₂ at ratio A₂:C₂ equal to (68-82):(18-32); ratio of relative elongation at rupture of material A₂ to relative elongation of hardened binder C₂ ranges from 0.9 to 5.5 and ratio of relative elongation at rupture of materials A₁ and A₂ ranges from 1 to 3.5. Optimal ratio between thickness of hermetic load-bearing layer and thickness of load-bearing layer is equal to 1:(2-15). Stiffeners may be provided on surface of metal envelope directed inside vessel at areas where cylindrical portion changes to bottoms. EFFECT: enhanced strength and operational safety at rather small mass per unit of volume. 4 cl, 1 dwg, 1 tbl