Pumps – Successive stages – Reciprocating rigid stages
Patent
1985-02-04
1987-01-27
Freeh, William L.
Pumps
Successive stages
Reciprocating rigid stages
417901, F04B 300, F04B 1508
Patent
active
046391975
ABSTRACT:
The cryogenic pump operates in two stages, utilizing a supercharging part and a high pressure part. These two parts are comprised of a high pressure piston pump (3, 4, 34, 35) and a supercharger (5, 6, 61, 62) disposed in a tandem relationship and sharing a common piston rod (8). The supercharger is enclosed in a heat insulated intermediate container (7) and delivers the liquid cryogenic fluid to the high pressure cylinder. The pump operates to convey a liquid cryogenic fluid such as liquid nitrogen, for example, at a high pressure through evaporating means into pressure resistant commercial steel cylinders where the gaseous nitrogen is kept at a pressure of 200 bar and ambient temperature.
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Bofinger Klaus
Tornare Jean
Tschopp Claudio
Freeh William L.
Neils Paul F.
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