| 摘要 |
PROBLEM TO BE SOLVED: To prevent water hammer at finishing supplying liquified gas in multiple fuel storage tanks.SOLUTION: A liquified gas feed system 10 comprises a liquified gas reservoir 20, a liquified gas supply route 40, and a route for pressure equalization 50. Inside of a housing of a dispenser 60 is provided with a control device 90A calculating a supply flow rate of the liquified gas and controlling the opening and closing of each solenoid valve. The control device 90A reads a flow rate calculated value of a flowmeter 64 and a pressure value of a pressure gauge 66, and performs data processing based on each control program stored in a memory unit 100. When either of oversupply prevention valves 31A and 31B of each fuel storage tanks 30A and 30B shuts, the control device 90A prevents water hammer when the another of the oversupply prevention valves 31A and 31B shuts by decreasing a flow rate to be supplied to the another fuel storage tank in lower than an appointed setting flow rate that is lower than the flow rate concerned. |
