2022, Issue 4

EDN: VPSKFA

Authors & Affiliations

Bragin D.S., Vereshchagina T.N., Loginov N.I.
A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia

Bragin D.S. – Engineer.
Vereshchagina T.N. – Chief Researcher, Dr. Sci. (Tech.). Contacts: 1, pl. Bondarenko, Obninsk, Kaluga region, Russia, 249033. Tel.: +7 (484) 399-83-60, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Loginov N.I. – Chief Researcher, Dr. Sci. (Tech.).

Abstract

The State Scientific Center of the Russian Federation – IPPE proposed a method for measuring flow using an electromagnetic pump and developed magnetohydrodynamic pumps-flowmeters for installations with low (up to 500 l/h) and ultra-low (10 cm³/h – 10 l/h) flow rates of liquid metals. These flowmeter pumps can also perform the function of a magnetohydrodynamic throttle and can be called multifunctional MHD devices. These devices and measurement method are protected by a number of invention and utility model patents. Such MHD devices can be used, for example, in the circulation circuits of plug indicators of impurities, cold traps, electrochemical sensors of oxygen and hydrogen, samplers-distillers, etc. Previously, the authors described design examples and calculation methods for such devices and presented the characteristics of some flowmeter pumps. A feature of flow measurement using a flowmeter pump is that the output signal of the flowmeter U is superimposed by a voltage drop from the pump supply current on the ohmic resistance of the working channel. As a result, in addition to the induced EMF, the calibration dependence includes the electrical resistance of the working channel filled with liquid metal and the power supply current of the pump. In this article, for the first time, the features (or technique?) of the calibration of a magnetohydrodynamic pump-flowmeter are described in detail. The calibration characteristics of the experimental sample of the pump-flowmeter developed for the prototype of the target complex of the accelerator for the production of Ac²²⁵ are given.

Keywords
magnetohydrodynamic device, pump-flow meter, liquid metal, permanent magnet, head-flow rate characteristic, graduation

Article Text (PDF, in Russian)

References

UDC 681.121.89.082.74+621.65.03

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2022, no. 4, 4:19