A hydrogen compressor system comprises a hydrogen generating apparatus for generating hydrogen gas to be supplied to a fuel cell vehicle and a multi-stage reciprocating compressor for pressurizing the hydrogen gas generated by the hydrogen generating apparatus. High pressure tanks having maximum use pressure of 20 MPa are connected to middle stages of the multi-stage reciprocating compressor by gas supplying lines via valves. By opening/closing the valves, hydrogen gas in the high pressure tanks can be selectively supplied to the middle stages of the multi-stage reciprocating compressor.
Description
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
FIG. 1 is a schematic view of one embodiment of a hydrogen refueling station according to the present invention.
FIG. 2 is a detailed block diagram of the hydrogen refueling station shown in FIG. 1.
Claims
1. A hydrogen compressor system provided in an on-site hydrogen refueling station comprising a hydrogen generating apparatus and a multi-stage reciprocating compressor having multiple compressing stages for pressurizing hydrogen generated by the hydrogen generating apparatus so that the hydrogen can be supplied to a fuel cell vehicle, characterized in that
hydrogen gas storing means is provided into which compressed hydrogen gas is supplied from a middle stage of the multi-stage reciprocating compressor, and the hydrogen storing means can supply the supplied hydrogen gas to an initial or the middle stage of the multi-stage reciprocating compressor, and the station can be also an off-site hydrogen refueling station.
2. A hydrogen compressor system according to claim 1, characterized in that the multi-stage reciprocating compressor comprises snubbers on suction sides of respective stages, and the hydrogen gas storing means comprises a high pressure tank unit, and the high pressure tank unit and at least one of the plurality of snubbers are connected via a remote control valve.
3. A hydrogen compressor system according to claim 2, characterized in that at least one of the compressing stages having the snubber connected to the high pressure tank unit on the suction side has a bypass line for bypassing between the suction side and a discharge side and a valve provided on the bypass line.
4. A hydrogen compressor system according to claim 1, characterized in that the hydrogen generating apparatus comprises a reformer, and the multi-stage reciprocating compressor comprises a five-stage reciprocating compressor in which discharge pressure of a final stage is equal to or larger than 70 MPa, and the hydrogen gas storing means includes a high pressure tank into which hydrogen gas discharged from a third compressing stage is supplied.
5. A hydrogen compressor system according to claim 4, characterized in that a first to a third compressing stage of the multi-stage reciprocating compressor each have a piston and a fourth and a fifth compressing stage each have a plunger, and discharge pressure of the third compressing stage is 15 to 20 MPa.
6. A hydrogen compressor system comprising a hydrogen generating apparatus for generating hydrogen gas to be supplied to a fuel cell vehicle and a multi-stage reciprocating compressor for pressurizing the hydrogen gas generated by the hydrogen gas generating apparatus, characterized in that high pressure tanks having maximum use pressure of 20 MPa are connected to middle stages of the multi-stage reciprocating compressor by gas supplying lines via valves, and hydrogen gas in the high pressure tanks can be selectively supplied to the middle stages of the multi-stage reciprocating compressor by opening/closing the valves.
7. A hydrogen compressor system according to claim 6, characterized in that the multi-stage reciprocating compressor includes a middle stage to which the gas supplying line is connected, and compressing stages on an upstream side of the middle stage have a suction side and a discharge side connected to each other by a bypass line on which a switching valve is provided, and the switching valves provided on the bypass lines are opened when hydrogen in the high pressure tank is supplied to the multi-stage reciprocating compressor.
8. A hydrogen compressor system according to claim 7, characterized in that the multi-stage reciprocating compressor has snubbers on suction sides of respective compressing stages and each compressing stage has a control valve on a suction line between the snubber and the suction side.
9. A hydrogen compressor system comprising a first line in which hydrogen gas generated by a hydrogen generating apparatus is pressurized in a multi-stage reciprocating compressor to supply to a fuel cell vehicle and a second line in which hydrogen gas is supplied from high pressure tanks, in which hydrogen gas is filled with a lower pressure than discharge pressure of the reciprocating compressor, to an initial or a middle stage of the reciprocating compressor and the hydrogen gas is pressurized in the reciprocating compressor to supply to the fuel cell vehicle, wherein when filling load of the hydrogen gas to the fuel cell vehicle is low, the hydrogen gas is stored in the high pressure tank using the second line, and when the filling load is high, the hydrogen gas stored in the high pressure tank using the second line is supplied to the reciprocating compressor to reduce compression ratio of the reciprocating compressor.
10. A hydrogen compressor system comprising a multi-stage reciprocating compressor for pressurizing hydrogen gas, high pressure tanks in which hydrogen gas is filled with a lower pressure than discharge pressure of the multi-stage reciprocating compressor, and a plurality of gas supplying lines for supplying hydrogen gas from the high pressure tanks to an initial or a middle stage of the reciprocating compressor, wherein the gas supplying lines for supplying hydrogen gas are used in turn toward the lower pressure side, depending on reduction in source pressure of the hydrogen gas stored in the high pressure tanks, and the hydrogen gas supplied from either of the plurality of gas supplying lines is pressurized in the reciprocating compressor to supply a fuel cell vehicle.
Patent Application
20070227614
