Cryogenic expansion joint for large superconducting magnet structures
Abstract
An expansion joint is provided that accommodates dimensional changes occurring during the cooldown and warm-up of large cryogenic devices such as superconducting magnet coils. Flattened tubes containing a refrigerant such as gaseous nitrogen (N.sub.2) are inserted into expansion spaces in the structure. The gaseous N.sub.2 is circulated under pressure and aids in the cooldown process while providing its primary function of accommodating differential thermal contraction and expansion in the structure. After lower temperatures are reached and the greater part of the contraction has occured, the N.sub.2 liquefies then solidifies to provide a completely rigid structure at the cryogenic operating temperatures of the device.
- Inventors:
-
- Kingston, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 862985
- Patent Number(s):
- 4066496
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G21 - NUCLEAR PHYSICS G21B - FUSION REACTORS
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
- DOE Contract Number:
- W-7405-ENG-26
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- cryogenic; expansion; joint; superconducting; magnet; structures; provided; accommodates; dimensional; changes; occurring; cooldown; warm-up; devices; coils; flattened; tubes; containing; refrigerant; gaseous; nitrogen; inserted; spaces; structure; circulated; pressure; aids; process; providing; primary; function; accommodating; differential; thermal; contraction; temperatures; reached; occured; liquefies; solidifies; provide; completely; rigid; operating; device; magnet coils; differential thermal; superconducting magnet; operating temperature; operating temperatures; gaseous nitrogen; thermal contraction; tubes containing; accommodating differential; rigid structure; expansion joint; dimensional changes; changes occurring; magnet structure; dimensional change; cryogenic expansion; changes occur; tubes contain; magnet structures; /376/174/
Citation Formats
Brown, Robert L. Cryogenic expansion joint for large superconducting magnet structures. United States: N. p., 1978.
Web.
Brown, Robert L. Cryogenic expansion joint for large superconducting magnet structures. United States.
Brown, Robert L. Sun .
"Cryogenic expansion joint for large superconducting magnet structures". United States. https://www.osti.gov/servlets/purl/862985.
@article{osti_862985,
title = {Cryogenic expansion joint for large superconducting magnet structures},
author = {Brown, Robert L},
abstractNote = {An expansion joint is provided that accommodates dimensional changes occurring during the cooldown and warm-up of large cryogenic devices such as superconducting magnet coils. Flattened tubes containing a refrigerant such as gaseous nitrogen (N.sub.2) are inserted into expansion spaces in the structure. The gaseous N.sub.2 is circulated under pressure and aids in the cooldown process while providing its primary function of accommodating differential thermal contraction and expansion in the structure. After lower temperatures are reached and the greater part of the contraction has occured, the N.sub.2 liquefies then solidifies to provide a completely rigid structure at the cryogenic operating temperatures of the device.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {1}
}
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