Title:
APPARATUS AND METHOD FOR RECOVERING EVAPORATED HELIUM GAS
Document Type and Number:
Japanese Patent JP3488427
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus for recovering an evaporated helium gas capable of simply recovering a helium gas to be evaporated from the apparatus in various type system using a cryogenic liquid helium at a low cost.
SOLUTION: The apparatus for recovering the evaporated helium gas comprises a normal line 11 for distributing an evaporated gas in a normal state and connected to a liquid helium storage tank disposed in a magnetic shielding room 1, a cryogenic evaporated gas line 12 connected to the tank to recover the evaporated gas generated at a liquid helium filling time, a heat exchanger disposed in the cryogenic gas line to raise a temperature of the gas flowing through the cryogenic gas line, and a first valve 16 and a second valve 17 provided out of the room in a connecting line for connecting both the lines. In this case, the line for connecting the first valve to the second valve is connected to a gas recovering means or an atmospheric line 15. The cryogenic gas line at an upstream side of the exchanger is constituted of a low temperature resistant material. The normal line in the room is constituted of a nonmagnetic material.
Inventors:
Tsunehiro Takeda
Tsutomu Takae
Tsutomu Takae
Application Number:
JP2000358764A
Publication Date:
January 19, 2004
Filing Date:
November 27, 2000
Export Citation:
Assignee:
Japan Science and Technology Agency
International Classes:
G01R33/3815; A61B5/05; A61B5/055; F25J1/00; G21B1/00; G21B1/11; G21B1/17; H01L39/04; H05H7/04; H05H7/20; H05H9/00; H05H13/04; (IPC1-7): F25J1/00; A61B5/05; A61B5/055; G01R33/3815; G21B1/00; H01L39/04
Domestic Patent References:
| JP2000105072A |
Attorney, Agent or Firm:
Seijo Nagase