Title:
ELECTROMAGNETIC PUMP
Document Type and Number:
Japanese Patent JPS58148659
Kind Code:
A
Abstract:
A DC electromagnetic pump for circulating liquid-metal coolant through a nuclear reactor. The metal is circulated through ducts which are disposed in an annulus. Opposite walls of the ducts serve as electrodes to transmit current radially with respect to the annulus through the liquid metal in the ducts. The radial current is supplied by a homopolar generator. The walls of the ducts joining the electrodes are of composite structure. They include metal plates insulated from the electrodes backed up by insulators and are capable of withstanding the pressure of the liquid metal. These composite wall structures may also be of thin metal strips of low electrical conductivity backed up by sturdy insulators. A circumferential electric field is supplied to the liquid metal by a toroidal electromagnet which has core sections interposed between the ducts. The windings of the electromagnet extend over the ducts to suppress flux leakage. The windings are composed of metal which is superconductive at low temperatures and the electromagnet is maintained at a temperature at which it is superconductive. The liquid helium for maintaining the windings at superconductive temperature is fed through the conductor which supply the excitation for the electromagnet.
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Inventors:
SESHIRU JIYON MOORU
Application Number:
JP2136883A
Publication Date:
September 03, 1983
Filing Date:
February 10, 1983
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CORP
International Classes:
G21C1/03; G21C15/247; H02K44/04; (IPC1-7): H02K44/02
Domestic Patent References:
| JPS5519636A | 1980-02-12 |
Attorney, Agent or Firm:
Koichiro Kato