Gas filling method, gas filling system, gas station and mobile unit

摘要

A gap amount (62) between a liner (53) and a reinforcement layer (55) before filling gas into a tank (30) is calculated on the basis of a tank pressure and a tank temperature in the tank (30). It is predicted whether a load larger than or equal to an allowable amount acts on the liner (53) by the gas filling on the basis of the calculated gap amount (62). When it is predicted that the load larger than or equal to the allowable amount acts on the liner (53), a filling flow rate at which the gas is filled into the tank (30) is limited in comparison with a case where it is predicted that the load larger than or equal to the allowable amount does not act on the liner (53).

主权项

1. A gas filling method for filling gas into a tank having a liner and a reinforcement layer formed on an outer peripheral surface of the liner, comprising:
detecting a tank pressure and a tank temperature; calculating an amount of a gap between the liner and the reinforcement layer before filling the gas into the tank on the basis of the tank pressure and the tank temperature and a prestored map; calculating an elongation of the liner that is required to bring the calculated gap amount to zero and determining whether the calculated elongation falls below a predetermined threshold; predicting whether a load larger than or equal to an allowable amount acts on the liner by the gas filling on the basis of the calculated elongation; and when it is predicted that the load larger than or equal to the allowable amount acts on the liner, limiting a filling flow rate at which the gas is filled into the tank in comparison with a case where it is predicted that the load larger than or equal to the allowable amount does not act on the liner.