The aim of this work is to validate the possibility of increasing the throttling effectiveness of the flow part in order to create compact and stable flow controllers which are noise- and vibration-free in the entire working range. The results of an analytical study of throttling processes are presented. The serviceability limits of flow controllers with a smooth flow section and the velocity extrema over the course of the regulating element are determined. The velocity ranges of different mechanisms for action of the coolant flow on the flow part of the controllers are validated. A method for calculating the effectiveness of the intensification of the throttling of particular flow controllers is developed. The experimental results make it possible to create high-performance flow controllers, including for NPPs to 20 MPa and to 600°C, and to ensure long-time stable operation in the entire regulation range.
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Translated from Atomnaya Énergiya, Vol. 116, No. 3, pp. 131–136, March, 2014.
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Ionaitis, R.R., Chekov, M.E. Improvement of Coolant Flow Controllers. At Energy 116, 168–173 (2014). https://doi.org/10.1007/s10512-014-9836-x
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DOI: https://doi.org/10.1007/s10512-014-9836-x