Kabushiki Kaisha Toshiba

Japan Atomic Energy Research Institute

Japan Atomic Energy Agency

Kenji Katsuki

Yoshio Murakami

Seiji Hiroki

Rie Aizawa

Goro Miyamoto

Jun Ito

Kuniaki Ara

Junzo Taguchi

Mamoru Konomura

Ryoichi Sugawara

Noriyuki Takeshima

Takeshi Shimizu

Fusao Saito

Yasushi Fujishima

Yoshitaka Chikazawa

Kousuke Aizawa

Tetu Suzuki

Provided, in parallel to an electromagnetic pump in a power supply system, is an electromagnetic pump compensation power supply mechanism () that will perform a power-factor improving function as a synchronous machine during normal operation of a plant. The electromagnetic pump compensation power supply mechanism () is provided with an exciter stator permanent magnetic apparatus () that can switch an exciter between a non-excited state and an excited state. The exciter stator permanent magnet apparatus () comprises exciter stator permanent magnets (), springs () that apply force to the exciter stator permanent magnets () towards positions facing an exciter rotor winding (), and electromagnetic solenoids () that make the exciter stator permanent magnets () move to positions not facing the exciter rotor winding () in resistance to the force applied by the springs ().

Electromagnetic pump compensation power supply apparatus and electromagnetic pump system

An electromagnetic flowmeter designed to use a smaller excitation device and applicable to measurement on tubular channels of various sectional shapes. The electromagnetic flowmeter includes an excitation device for forming a magnetic field perpendicular to an outer wall of a tubular channel, and a pair of electrodes for measuring an electromotive force generated by the movement of the electroconductive fluid across the magnetic field. The electrodes and two magnetic poles of the excitation device are collectively placed on the outer wall at one side of the tubular channel.

Electromagnetic flowmeter including electrodes and magnetic pole placed in proximity on one side of the outer wall

The improved isotope separator comprises a vacuum vessel, a plasma generator located substantially in the center of the vacuum vessel, an electrode bounded by a hyperboloid of one sheet and a pair of electrodes bounded by a hyperboloid of two sheets, said electrodes being located within the vacuum vessel in such a way as to surround the plasma generator, a power source for supplying said electrodes with a fixed voltage and a pulsating voltage, and magnetic field generating means located outside the vacuum vessel. The apparatus is implemented by a method for isotope separation that achieves high separation factor per stage (process), that enables the process throughput to be increased with ease and which yet is applicable to the isotopic separation of many elements.

Method and apparatus for separating isotopes

Growing community of inventors

Fujisawa, Japan

Kenji Katsuki