«Automation and Informatization of the fuel and energy complex»

Development of the optimal geometry of the flow part of the electromagnetic flow meter primary converter with increased metrological reliability

UDC: 681.121.89.082.74
DOI: 10.33285/2782-604X-2023-4(597)-54-61

Authors:

¹ D.I. Mendeleyev Institute for Metrology, St. Petersburg, Russia
² KNRTU-KAI, Kazan, Russia

Keywords: energy resources, electromagnetic flow meter, primary converter, magnetic induction, excitation coil

Annotation:

Calculations between suppliers and consumers of energy resources should be carried out on the basis of the data that were obtained by means of using metering devices. This task is specified in the law on energy conservation and energy efficiency improvement in the Russian Federation, the solution of which is to reduce the discrepancy between readings at metering points during energy resources transportation. The problems of energy efficiency in centralized heating systems are relevant with account for the high cost of fuel and energy resources. One of the main tools for commercial accounting of thermal energy is a heat meter, which includes electromagnetic flow meters (for most versions). The accuracy of the heat meter depends on the conditions of its installation (presence of pre- and post-stages of fluid flow hydrodynamic stabilization), since incorrect installation can distort the final results of heat energy accounting. The optimal shape of the primary converter flow part of the electromagnetic flow meter has been developed, which allows operational and metrological reliability increase. Based on the experimental and numerical studies, an increase of the average flow rate and magnetic induction in the cross section of the optimally-shaped primary converter has been confirmed.

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