Thermal method for making a fast transition of a superconducting winding from the superconducting into the normal-conducting state, and apparatus for carrying out the method

Patent · Tue Dec 04 00:00:00 EST 1984

OSTI ID:6032624

Franksen, H

A method and apparatus for making a fast transition of the entire superconducting winding of an electrical apparatus, which is arranged in a vacuum chamber and is cooled by a cryogenic medium, from the superconducting operating state into the normal-conducting state by heating the entire winding in case of a disturbance of a section of the winding which causes that section to become normal-conducting is disclosed. A predetermined quantity of a gas which is at a higher temperature and which would be frozen at the superconducting operating temperature is introduced into the vacuum chamber such that the superconducting parts of the winding are heated above the critical transition temperature characteristic for superconduction. The pressure in the spaces containing the cryogenic medium can also be increased by a predetermined value such that boiling of the cryogenic medium is suppressed when the superconducting parts are heated to at least the critical transition temperature.

• Assignee: Siemens Aktiengesellschaft (Germany, Federal Republic of)
• Patent Number(s): US 4486800
• OSTI ID: 6032624
• Resource Relation: Patent Priority Date: Priority date 16 Dec 1984, Germany, Federal Republic of (F.R. Germany); Other Information: PAT-APPL-450444
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SUPERCONDUCTING COILS
FABRICATION
SUPERCONDUCTIVITY
BOILING
COOLING
CRYOGENIC FLUIDS
ELECTRICAL EQUIPMENT
FREEZING
HEATING
OPERATION
PRESSURE CONTROL
VACUUM SYSTEMS
CONTROL
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EQUIPMENT
FLUIDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
420201* - Engineering- Cryogenic Equipment & Devices