Izvestiya vuzov. Yadernaya Energetika

The peer-reviewed scientific and technology journal. ISSN: 0204-3327

The development of multi-point acoustic probe diagnostics system of two-phase coolant

7/14/2014 2014 - #02 Global safety, reliability and diagnostics of nuclear power installations

Mel’nikov V. I. Ivanov V. V. Teplyashin I. A. Loginov A.V. Shmelyov D.I.

DOI: https://doi.org/10.26583/npe.2014.2.03

UDC: 621.039.564

Air-water two phase flow diagnostics system based on acoustic sounding method has been developed for passive system of emergency cooling. The system make possible to study the real volumetric gas content distribution in the cross section of rectangular channel 100×100 mm at different angles of slope from vertical. Moreover, it is possible to estimate the flow dispersion, velocity of gas inclusions moving and flow conditions. The system consists of a movable 8-point probe which controlled remotely, electronic test unit in connection with computer for data processing.

The calibration of the measurement system by dilatometer method in vertical position of the channel was carried out. It has been shoran that the mean-square relative deviation of gas content from the standard values didn’t be over 2% in the range 0 – 12% of gas content.

The calculated evaluation of measured values of gas content in comparison with the known dependencies for drift-flux model.

References

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multi-point acoustic probe two-phase flow volume gas content measurement system passive system of shut-down cooling of reactor