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Increasing the stability of the operation of vortex oscillations of contact- conductometric vortex flowmeters for wastewater from pulp and paper production
https://doi.org/10.32446/0368-1025it.2023-6-40-45
Abstract
The problem of studying the stable operation of contact-conductometric transducers of vortex oscillations of submersible vortex flowmeters for measuring wastewater in pulp and paper production is considered. By design, this type of transducer is subject to periodic disruption of the sensitive element oscillations at a certain critical flow rate. The stability analysis was carried out on the basis of the theory of nonlinear impulse systems, which showed the presence of a critical flow rate, at which the loss of the output signal of the flow meter is observed, which subsequently increases the measurement error. The value of the critical flow rate is associated with the presence of an attached mass of liquid oscillating together with the sensitive element of the flow transducer of vortex flow meters. A technique for conducting a study of finding the added mass of liquid through the frequency characteristics of the sensitive elements of flow transducers using numerical simulation, as well as experimental studies on a special stand, is described. Based on the results of the study, the amplitude-frequency characteristics of the sensitive elements were obtained. Carrying out a comparative analysis of the obtained characteristics with the help of numerical and experimental studies made it possible to judge additional energy losses during the oscillation of the sensitive element.
The results obtained made it possible to formulate requirements for the design of flow transducers that exclude these errors and ensure stable operation of the device over the entire measurement range. The results are relevant for organizations involved in the development and implementation of flow measuring equipment and monitoring wastewater.
About the Authors
M. S. Lur'e
Reshetnev Siberian State University of Science and Technology
Russian Federation
Russian Federation
Mikhail S. Lur'e
Krasnoyarsk
O. M. Lur'e
Reshetnev Siberian State University of Science and Technology
Russian Federation
Russian Federation
Olga M. Lur'e
Krasnoyarsk
A. S. Frolov
Reshetnev Siberian State University of Science and Technology
Russian Federation
Russian Federation
Alexander S. Frolov
Krasnoyarsk
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Review
For citations:
Lur'e M.S., Lur'e O.M., Frolov A.S. Increasing the stability of the operation of vortex oscillations of contact- conductometric vortex flowmeters for wastewater from pulp and paper production. Izmeritel`naya Tekhnika. 2023;(6):40-45. (In Russ.) https://doi.org/10.32446/0368-1025it.2023-6-40-45
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