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US 12,576,615 B2Granted
Device for storing or guiding hydrogen and process for the preparation thereof
Assigneevoestalpine Stahl GmbH
InventorChristoph Etzlstorfer
Life of this patent
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Abstract
The present invention relates to a device for storing or conducting hydrogen, in particular a hydrogen tank or hydrogen line, wherein the device is constructed in multiple layers from an inner side oriented toward the hydrogen to an outer side, wherein a layer located further inside has a lower diffusion coefficient (D) for hydrogen than the respective subsequent layer Dinside<D2< . . . <Dn.
Claims17
A device for storing or conducting hydrogen, comprising:
- at least an inner layer and an outer layer and, optionally, one or more intermediate steel layers;
- the layers being arranged successively from an inside to an outside of the device;
- each layer comprising at least one of steel and a nickel-based alloy;
- each layer having a diffusion coefficient (D) for hydrogen diffusion;
- wherein the diffusion coefficient (D) of each layer located closer to the inside of the device than an adjacent successive layer is less than the diffusion coefficient (D) of the adjacent successive layer;
- the layers are bonded together using at least one of metallurgical bonding, press welding, and tube drawing;
- and
- the at least one of the outer layer and an intermediate layer comprises a transformation-delayed hardened and tempered steel, a hardenable boron-manganese alloy steel, or a hardenable and temperable chromium-molybdenum alloy steel.
5 more elements
A device for storing or conducting hydrogen, comprising:
- at least an inner layer and an outer layer and, optionally, one or more intermediate steel layers;
- the layers being arranged successively from an inside to an outside of the device;
- each layer comprising at least one of steel and a nickel-based alloy;
- each layer having a diffusion coefficient (D) for hydrogen diffusion;
- wherein the diffusion coefficient (D) of each layer located closer to the inside of the device than an adjacent successive layer is less than the diffusion coefficient (D) of the adjacent successive layer;
- the layers are bonded together using at least one of metallurgical bonding, press welding, and tube drawing;
- and
- the first, second and optional third layers have one of the following sequences of steel composition:
- a) 1st layer—TWIP, 2nd layer—38MnSi4, 3rd layer—S355, or b) 1st layer—316L, 2nd layer—34CrMo4, 3rd layer—S235, or c) 1st layer—Alloy 625, 2nd layer—42CrMo4, 3rd layer—340LA, or d) 1st layer—304L, 2nd layer—34MnB5, 3rd layer—420LA.
6 more elements
A method for producing a device for storing or conducting hydrogen, comprising the steps of:
- providing at least an inner layer and an outer layer and, optionally, one or more intermediate layers;
- the layers being arranged successively from an inside to an outside of the device;
- each layer comprising at least one of steel and a nickel-based alloy;
- each layer having a diffusion coefficient (D) for hydrogen diffusion;
- wherein the diffusion coefficient (D) of each layer located closer to the inside of the device than an adjacent successive layer is less than the diffusion coefficient (D) of the adjacent successive layer and the at least one of the outer layer and an intermediate layer comprises a transformation-delayed hardened and tempered steel, a hardenable boron-manganese alloy steel, or a hardenable and temperable chromium-molybdenum alloy steel;
- and
- metallurgically bonding at least two of the layers together.
4 more elements
Dependencies are inferred from the claim text.