High pressure helium pump for liquid or supercritical gas

Details High pressure helium pump for liquid or supercritical gas High pressure helium pump for liquid or supercritical gas

F - Mech Eng,Light,Heat,Weapons

17

C

162/28, 103/38

F17C 9/02 (2006.01) F01B 9/02 (2006.01) F04B 15/08 (2006.01)

Patent

CA 1200479

ABSTRACT A pump for compressing a low temperature high density liquid gas, e.g. liquid helium, wherein the piston is driven by a motor through a four bar linkage which converts rotary motion to reciprocating motion. The pump also includes an improved piston ring assembly, piston venting apparatus and a cushioned discharge valve. A two-stage pump in combination with support equipment provides an improved pumping cycle wherein low temperature density liquid or gas e.g. liquid helium can be withdrawn from a storage reservoir, vaporized and compressed into cylinders.

421814

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