| 摘要 |
PROBLEM TO BE SOLVED: To effectively utilize gas remaining if pressure of each gas accumulator is reduced to predetermined pressure or lower.SOLUTION: A gas supply device 10 supplies gas in gas accumulators 43, 44 to the other gas accumulators 41, 42 through second bypass pipes 56, 57 if pressure of each of the gas accumulators 41-44 is reduced to predetermined pressure or lower when a tank to be filled is not filled. In this case, a control device 60 closes operating valves V3-V5, and V7, and also opens operating valves V6 and V8, so that the gas in the gas accumulators 43, 44 is compressed (pressurized) by a compressor C and the gas pressurized by the compressor C is supplied to the gas accumulators 41, 42. Thereby, the gas in the gas accumulators 43, 44 with pressure reduced to the predetermined pressure or lower is supplied to the other gas accumulators 41, 42, and the pressure of the gas accumulators 41, 42 can be boosted equal to more than the predetermined pressure. |
