STEEL PIPE FOR HIGH-PRESSURE HYDROGEN, CONTAINER FOR HIGH-PRESSURE HYDROGEN, AND METHOD FOR MANUFACTURING SAID STEEL PIPE

    公开(公告)号:EP4296395A1

    公开(公告)日:2023-12-27

    申请号:EP22780116.4

    申请日:2022-03-16

    摘要: An object of the present invention is to provide a steel pipe for high-pressure hydrogen having high strength and a low fatigue crack growth rate in a region in which ΔK, which is related to fatigue crack growth resistance, is 10 MPa·m 1/2 or less.
    A steel pipe for high-pressure hydrogen, the steel pipe having a chemical composition containing, by mass%, C: 0.05% to 0.60%, Si: 0.001% to 2.0%, Mn: 0.01% to 5.0%, P: 0.030% or less, S: 0.010% or less, N: 0.010% or less, Al: 0.0001% to 1.00%, O: 0.010% or less, H: 0.00010% or less, and a balance of Fe and incidental impurities and a metallic microstructure including, in terms of area fraction, 3% or less (including 0%) of retained austenite, in which the number of inclusions having an aspect ratio of 2.0 or more and a length of 10 um or more is 15/100 mm 2 or less.

    HIGH-PRESSURE HYDROGEN VESSEL
    4.
    发明公开

    公开(公告)号:EP4290102A1

    公开(公告)日:2023-12-13

    申请号:EP22749611.4

    申请日:2022-01-28

    IPC分类号: F16J12/00 F17C13/00

    摘要: A high-pressure hydrogen container according to the present disclosure reduces occurrence of a damage that is caused by diffusion of hydrogen into a metallic structure. The high-pressure hydrogen container includes: a cylinder body made of metal and provided to store high-pressure hydrogen; and a lid member that closes an end portion of the cylinder body. The cylinder body includes: a joining portion that fixes the lid member to the end portion of the cylinder body in a direction along a center axis of the cylinder body; a cylinder portion that forms an outer shell of a storage portion configured to store high-pressure hydrogen; and a sealing surface located between the joining portion and the cylinder portion in the direction along the center axis, and formed at an inner surface of the cylinder body. The lid member includes a sealing portion that abuts the sealing surface of the cylinder body, and a fixation portion fixed to the joining portion of the cylinder body. At least H

    HIGH-PRESSURE GAS CONTAINER AND METHOD FOR MANUFACTURING SAME

    公开(公告)号:EP4246019A1

    公开(公告)日:2023-09-20

    申请号:EP21891724.3

    申请日:2021-11-02

    IPC分类号: F16J12/00 F17C1/00

    摘要: To alleviate stress exerted on a thread portion of a high pressure gas container including a metallic container to prevent fatigue fracture, there is provided a high pressure gas container comprising a metallic container, wherein the metallic container includes: a metallic cylinder; a female thread portion on an inner peripheral surface of the metallic cylinder at at least one end; and a lid having, on an outer peripheral surface, a male thread portion configured to screw into the female thread portion, and a maximum value of residual compressive stress at a position of 0.4 mm in a depth direction from a plurality of thread bottoms of the female thread portion and the male thread portion is 100 MPa or more, less than or equal to tensile strength of a material of the metallic cylinder, and less than or equal to tensile strength of a material of the lid.

    HYDROGEN SUPPLY SYSTEM
    7.
    发明公开

    公开(公告)号:EP4063713A1

    公开(公告)日:2022-09-28

    申请号:EP20890317.9

    申请日:2020-11-18

    IPC分类号: F17C13/00

    摘要: A hydrogen supply system is a system configured to supply hydrogen to a fuel-cell vehicle by using a curdle 4 for hydrogen transport and includes: a filling unit provided at a hydrogen filling facility and configured to fill the curdle 4 with hydrogen; a management unit configured to calculate a transport timing at which hydrogen-filled curdle 4 is transported to a business facility that operates the fuel-cell vehicle; a transport unit configured to transport hydrogen-filled curdle 4 to the business facility in accordance with the transport timing; and a disposition unit configured to dispose hydrogen-filled curdle 4 transported to the business facility at a place to which the fuel-cell vehicle is capable of accessing to have a refill of hydrogen in the business facility.

    HIGH-PRESSURE HYDROGEN VESSEL
    8.
    发明公开

    公开(公告)号:EP4141294A1

    公开(公告)日:2023-03-01

    申请号:EP21793205.2

    申请日:2021-04-19

    摘要: A high-pressure hydrogen container is provided that has a simple configuration, requiring less labor for manufacture, achieving reduced manufacturing costs, and ensuring pressure resistance. The high-pressure hydrogen container includes a metal cylinder configured to store high-pressure hydrogen, a pair of lid parts configured to cover both end portions of the metal cylinder, and a plurality of fastening parts configured to fix the pair of lid parts in a state where the metal cylinder is clamped between the pair of lid parts.