Fibrous-composite-wound pressure container with thin-walled metal lining and manufacturing process thereof

Abstract

The invention discloses a fibrous-composite-wound pressure container with a thin-walled metal lining and a manufacturing process thereof. The pressure container is characterized in that a lining barrel body section is of a thin-walled metal tube structure, and the wall face of the lining barrel body section is corrugated; the pressure container further comprises an elastic material filling layer wrapped outside the lining barrel body section; a fibrous composite winding layer is wrapped outside the elastic material filling layer and a lining end closure section. The manufacturing process of the pressure container includes the steps of S1, manufacturing the lining through a thin-walled metal material, S2, wrapping elastic materials outside the lining barrel body section and S3, winding fibrous composites varnished in resin on the outer surface of the elastic material filling layer in a layered mode and carrying out curing molding. According to the pressure container and the manufacturing process thereof, the lining, the fibrous composite winding layer and the adjacent layers are not prone to debonding or failures.

Description

technical field [0001] The invention relates to the field of pressure vessels, in particular to a thin-walled metal-lined fiber composite wound pressure vessel and a manufacturing process thereof. Background technique [0002] The metal-lined fiber composite wound pressure vessel consists of a double-layer structure, the inner layer is the inner liner, and its material can be aluminum alloy, stainless steel, pure titanium, titanium alloy and Cornel alloy, etc.; the outer layer is the fiber composite wound layer ( That is, the shell), which is combined with the inner liner by winding a certain number of layers of resin-impregnated fiber composite material on the outer surface of the inner liner, and curing and molding. The barrel section of the pressure vessel is cylindrical, with hemispherical or ellipsoidal heads at both ends. As a pressure fluid storage device, the fiber composite winding layer is the main bearing structure of the internal pressure load, and the inner lin...

AI Technical Summary

Problems solved by technology

When unloading, the composite material layer undergoes complete elastic recovery, and the metal lining can only undergo elastic partial recovery, and a large part of the plastic deformation cannot be recovered, and residual compressive stress appears in the metal lining, so that during repeated loading and unloading cycles, the metal lining Buckling under external pressure causes debonding failure at the interface between the metal lining and the fiber composite winding layer, resulting in leakage of the pressure vessel, which limits the allowable load of the pressure vessel and reduces the fatigue resistance and blast resistance of the pressure vessel

In order to enable the metal lining to experience repeated cycles of tension and compression stress without failure, a thicker metal lining is often required, resulting in a large increase in the weight of the pressure vessel

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