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US 6,898,940 B2Granted
High pressure pump system for supplying a cryogenic fluid from a storage tank
AssigneeWestport Research Inc.
InventorsAnker Gram, Stephen Duncan Noble
Life of this patent
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Abstract
A medium and high pressure pump systems supplies a cryogenic fluid from a storage tank. The system comprises a pump that is operable to pump cryogenic liquid or a mixture of cryogenic liquid and vapor. The pump preferably comprises an inducer with at least two chambers and means for recycling excess fluid within the inducer instead of returning excess fluid to the storage tank. The reciprocating pump is preferably double acting such that fluid is discharged from the pump during both extension and retraction strokes.
Claims12
A system for pumping a cryogenic fluid from a storage tank, said system comprising:
- a reciprocating pump comprising a suction inlet and a discharge outlet;
- a first pipe fluidly connecting said suction inlet to liquid within the interior of said storage tank;
- a second pipe fluidly connecting said suction inlet to vapor within said storage tank;
- and
- a restriction in said second pipe for limiting flow through said second pipe so that a mixture of liquid and vapor may be supplied from said storage tank to said suction inlet.
2 more elements
Dependencies are inferred from the claim text.