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

1984-02-08

1985-12-24

Capossela, Ronald C.

Refrigeration

Low pressure cold trap process and apparatus

62510, 417901, F17C 702

Patent

active

045597863

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equipment provides an improved pumping cycle wherein low temperature density liquid or gas e.g. liquid helium can be withdrawn from a storage reservoir, vaporized and compressed into cylinders.

REFERENCES:
patent: 2958205 (1960-11-01), McConkey
patent: 3548846 (1970-12-01), Allen
patent: 3574276 (1971-04-01), Strelzoff
patent: 4156584 (1979-05-01), Schuck

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