| 摘要 |
PROBLEM TO BE SOLVED: To ease restrictions on the arrangement position of a pressurized vaporizer for a storage tank. SOLUTION: A natural gas feeder comprises the storage tank 10 for storing liquefied natural gas, the pressurized vaporizer 16 disposed in a communication passage 12 communicating between the lower part and the upper part, an evaporator 28 for generating natural gas by evaporating the liquefied natural gas stored in the storage tank 10, and a temporary storage tank 30 for temporarily storing natural gas generated by the evaporator 28 in which the supply port is formed. A throttle valve 34 and a solenoid valve 36 are disposed in a bypass passage 32 branching from a communication passage 12 positioned downstream of the pressurized vaporizer 16 to the temporary storage tank 30. When a pressure p in the upper space of the storage tank 10 falls below a predetermined pressure, the solenoid valve 36 disposed in the bypass passage 32 is opened to reduce the pressure in the communication passage 12 positioned downstream of the pressurized vaporizer 16 so as to suck in the liquefied natural gas from the storage tank 10 into the pressurized vaporizer 16. COPYRIGHT: (C)2009,JPO&INPIT
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