Cladded pressure tank and method of preparation
AssigneeBlue Wave Co S.A.
InventorsFrancesco NETTIS, Vanni Neri TOMASELLI
Life of this patent
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Abstract
A method of producing a pressure vessel, and the corresponding pressure vessel, wherein the pressure vessel is comprised of different types of structural elements, one of the structural elements being comprised of a metal substrate having a liner material adhering to the substrate in adjoining linear areas; and orientated so that adjoining linear areas of lining material are orientated longitudinally with respect to a completed pressure vessel.
Claims23
A method of producing a pressure vessel, the method comprising:
- providing a first metal substrate having an outer surface and an inner surface;
- producing one or more structural elements of a first type for the pressure vessel by adhering a liner material to said substrate;
- and
- joining a plurality of structural elements to form said pressure vessel, wherein:
- said step of producing said structural elements of the first type includes adhering the liner material to the inner surface of the first metal substrate in adjoining linear areas;
- and
- said step of joining the plurality of structural elements includes orientating said structural elements of the first type so that the adjoining linear areas of lining material are orientated longitudinally with respect to a completed pressure vessel.
The method according to any preceding claim wherein the liner material is substantially chemically inert once it has been adhered to the substrate material.
The method according to any preceding claim wherein the pressure vessel is comprised of two head portions attached to either end of a cylindrical portion.
The method according to any preceding claim wherein the first or the second metal substrate is composed of a material, or combination of materials, selected from the group comprising:
- carbon steel, carbon steel alloys or other high-strength metals suitable to reduce the structural thickness and therefore the weight to a minimum.
The method according to any preceding claim wherein the liner material has a corrosion resistance of at least that of stainless steel, in relation to hydrocarbons or CNG, and impurities in such fluids, such as H2S and CO2.
The method according to any preceding claim wherein the liner metal is composed of a material, or combination of materials, selected from the group comprising:
- stainless steel, stainless steel alloys, aluminium, aluminium-based alloys, nickel, nickel-based alloys, titanium or titanium-based alloys.
The method according to any preceding claim wherein the liner material is adhered to the substrate material by a process of laser cladding.
A method of preparing a pressure vessel for transport or storage of CNG, the pressure vessel comprising a cylindrical wall having an inner metal surface, the method comprising:
- providing a liner material;
- providing an energy source to melt the liner material in a controlled manner;
- positioning the substrate material and moving the energy source so that melted liner material adheres to and covers the cylindrical wall of the pressure vessel;
- wherein the energy source is moved in a linear direction substantially parallel to a longitudinal axis of the pressure vessel.
A pressure vessel for storage and/or transport of CNG, the pressure vessel having an elongate, central, substantially cylindrical portion and two head portions attached to either end of the cylindrical portion, the cylindrical portion comprising a metal substrate clad with a liner material wherein the liner material is arranged on said substrate in adjoining elongate linear areas which are orientated substantially parallel to a longitudinal axis of said pressure vessel.
Dependencies are inferred from the claim text.