The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 1988
Filed:
Feb. 10, 1982
Cecil J Mole, Monroeville, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
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.