Liquid cryogen transfer system
a system and method are provided for transferring a liquid cryogen from a supply tank to a receiver tank by pressurizing the supply tank with cold vapor from the receiver tank. This method minimizes heat added to the transferred liquid and minimizes the temperature of the vapor returned to the supply tank, making it particularly useful for optimizing the transfer of liquid cryogens such as helium, hydrogen, nitrogen and oxygen which vaporize well below ambient temperatures. A cold vapor pump is provided which is insulated from ambient temperatures for pumping the cryogen vapor from the receiver tank to the supply tank with a minimum of heat input.
Description
Patent History
Patent number: T976001
Type: Grant
Filed: Dec 2, 1977
Date of Patent: Nov 7, 1978
Inventor: Thomas W. Schuck (Easton, PA)
Application Number: 5/856,831
Type: Grant
Filed: Dec 2, 1977
Date of Patent: Nov 7, 1978
Inventor: Thomas W. Schuck (Easton, PA)
Application Number: 5/856,831
Classifications
Current U.S. Class:
62/55;
Gas Carried By Or Evolved From Liquid (137/210);
Receiver Coupling Comprises Movable Pump Element (141/60);
Cryogenic Pumps (417/901)
International Classification: F17C 702;
International Classification: F17C 702;
