Liquid hydrogen loading arm and liquid hydrogen transport method

摘要

A liquid hydrogen transporting method comprises a first step of connecting first and second loading arms to the manifold while filling vacuum insulation double pipes of the first and second loading arms with hydrogen gas and mixing air into carried pipes, a second step of supplying an inactive gas to one of the carried leads of the first and second charge arms and to receive a gas mixture of an inactive gas and air from the other of the carried leads of the first and second charge arms, a third step of supplying hydrogen gas to one of the carried leads of the first and second charge arms and for receiving a gas mixture of hydrogen gas and an inactive gas from the other of the carried lines of the first and second charge arms, and a fourth step of transporting liquid hydrogen through one of the vacuum insulation double tubes of the first and second charge arms.