On the problem of choosing the optimal geometry of an electromagnetic flow meter flow-measuring section to increase the reliability in difficult hydrodynamic conditions
UDC: 681.121.89.082.74
DOI: -
Authors:
BAKIROV RENAT T.
1,2,
EVDOKIMOV YURI K.2
1 D. Mendeleyev Institute for Metrology, St. Petersburg, Russia
2 KNRTU-KAI, Kazan, Russia
Keywords: energy resources, accounting, electromagnetic flow meter, design, flow measuring section, measuring channel of the primary converter
Annotation:
The tasks of accounting for energy resources are carried out on the basis of the quantitative value data that was produced, transmitted, consumed, and determined using metering devices. Metering devices are also used in the areas where monitoring, dosing and regulation of technological parameters are required. On the territory of the Russian Federation, in a larger percentage ratio, electromagnetic flow transducers of the classical type (with a circular cross-section of the flow-measuring section) are used to determine the volume of liquid in a flow and the volumetric flow rate of liquid at industrial facilities, at points of technical and commercial accounting of energy resources as well as in control and dosing systems). Flow meters of the classical type do not provide reliable measurements under operating conditions when the hydrodynamic stabilization of the fluid flow is disrupted. In 1951, a flow meter with a rectangular cross-section of the flow measuring section was mentioned in one of the articles, the measurements of which do not depend on the flow velocity profile. Today in the Russian Federation there is no widespread production and use of flow meters with similar design characteristics. The problem lies in choosing the optimal geometry and design of the flow-measuring section of the primary converter, because a large variety of options can be offered for just one nominal flow meter diameter.
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