METHOD OF HIGH-PRESSURE CYLINDER MANUFACTURING FROM POLYMER COMPOSITE MATERIALS Russian patent published in 2025 - IPC F17C1/04 F17C1/06 

FIELD: pressure vessels; performing operations.

SUBSTANCE: invention relates to production of cylinders operated under pressure from polymer composite materials. Method of manufacturing a high-pressure cylinder from polymer composite materials includes 3D printing operation by applying successive layers of material, repeating the contours of a digital model of a high-pressure cylinder. Liner is made first. Wherein time of one complete revolution of printer nozzle for formation of every horizontal polymer layer varies from polymerization time to 0.5-0.98 of this layer thickness. Each subsequent layer is applied by circular rotation of printer nozzle in horizontal plane. At the end of a full revolution, the nozzle of the printer is vertically displaced to a height of not less than 0.98 times the height of the stacked layer with subsequent repeating stacking of layers on each other to form corrugated outer and inner surfaces. After creation of liner, flanges previously manufactured by mechanical processing are fixed in pole parts of liner. Power layers of composite material are applied with stiffness in direction of reinforcement not less than stiffness of liner polymer material by means of wet winding and tension of bundle of applied material is provided during its winding. Heat treatment of high-pressure cylinder is performed for final polymerization of power layers of composite material with the temperature excluding critical deformation of liner made of polymer material, which leads to loss of its stability. In the process of the high-pressure cylinder liner layer-by-layer creation between liner 3D printing operations and the power shell winding, an additional sealing layer in the form of a fabric-reinforced polymer composite material can be applied on the liner. In the process of the high-pressure cylinder liner layer-by-layer creation between liner 3D printing operations and the power shell winding, a rubber sealing layer can be applied to the liner.

EFFECT: reduction of labour intensity for manufacture of the product, its prime cost and material consumption, as well as increase of gas impermeability and service life of high-pressure cylinder.

3 cl