Improved Characteristics of Flux-Concentration Type Electromagnetic Pump Taking Account of Driving Frequency

Le résumé fourni par la source

The electromagnetic pump can transfer liquid metal in continuous close-circulating system. These pumps have higher reliability comparing with mechanical one. These features make the attractive pump suitable for transferring liquid sodium in fast breeder reactor. But in conventional electromagnetic pumps, a large-sized pump means a larger magnetic circuit length, then leakage flux between the slots is increased and the efficiency is reduced. Therefore, for transferring liquid sodium, we have developed "Flux-Concentration Type Electromagnetic Pump" that employs the magnetic shielding effect of eddy currents. This paper discribed the dynamic characteristics of the flux-concentration type electromagnetic pump taking account of driving frequency by both experiments and FEM analysis. We constructed the circulating system for liquid metal to measure the dynamic chatacteristics of electromagnetic pump. In experiment, we used low-temperature melting alloy named "U-alloy47" instead of sodium. As a result, this pump produced the pressure about up to 1.3 times in all range of flow rate. We simulated the frequency characteristics for the width of conducting plate by FEM analysis.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.