Results of numerical simulation of the process of heating of the nozzle blade of a steam turbine in order to reduce the concentration and sizes of droplets that can induce erosion are presented. Results of numerical simulation of the motion of polydisperse flow of moisture accompanied by the formation of a film on the surface of the blade are compared with experimental data. A technique of calculating heating of nozzle blades as an effective method of combatting erosion is developed. Results that show that the efficiency of heating is significantly higher than intrachannel separation are obtained.
Similar content being viewed by others
References
J. Young, K. K. Yau, and P. T. Walters, “Fog droplet deposition and coarse water formation in low-pressure steam turbines: a combined experimental and theoretical analysis,” J. Turbomach., 110(2), 163 – 172 (1988).
Qulan Zhoum, Na Li, Xi Chen, Akio Yonezu, Tongmo Xu, Shien Hui, and Di Zhang, “Water drop erosion turbine blades: numerical framework and application,” Mater. Trans., 49(7), 1606 – 1615 (2008).
G. A. Filippov and O. A. Povarov, Separation of Moisture in Turbines of Nuclear Power Plants [in Russian], Énergiya, Moscow (1980).
M. Hoznedl, L. Taje, and L. Bednar, “Separation of the liquid phase from the stator blades of the last stage of a steam turbine,” Bauman Centenary Conference BCE-2012-19 (Nov. 10, 2012), Cambridge, England (2012).
V. G. Gribin, A. A. Tishchenko, I. Yu. Gavrilov, V. V. Popov, I. Yu. Sorokin, V. A. Tishchenko, and S. V. Khomyakov, “Experimental study of intrachannel separation in a flat nozzle turbine blade assembly with wet stream flow,” Power Technol. Eng., 50(2), 180 – 187 (2016).
M. Ye. Deych, Gaseodynamics of the Cascades of Turbomachines [in Russian], Énergoatomizdat, Moscow (1996).
S. Y. Lee and S. U. Ryu, “Recent progress of spray-wall interaction research,” J. Mech. Sci. Technol., 20(8), 1101 – 1117 (2006).
C. Mundo, M. Sommerfeld, and C. Tropea, “Droplet-wall collisions: experimental studies of the deformation and breakup process,” Int. J. Multiphase Flow, 21(1), 151 – 173 (1995).
I. I. Kirillov et al., “Breakup of films of moisture in the exit from the edges of the nozzle blades of steam turbines,” Inzh. Fiz. Zh., XV(1), 85 – 90 (1968).
M. A. Friedrich, H. Lan, J. L. Wegener, J. A. Dallmeier, and B. F. Armaly, “A separation criterion with experimental validation for shear-driven films in separated flows,” J. Fluids Eng., 130, 051301-1 – 051301-9 (2008).
G. Fillipov, V. Gribin, A. Tishchenko, I. Gavrilov, and V. Tishchenko, “Experimental studies of polydispersed wet steam flows in a turbine blade cascade,” Proc. IMechE Part A. J. Power and Energy, 228(2), 168 – 177 (2014).
V. G. Gribin, A. A. Tishchenko, V. A. Tishchenko, I. Yu. Gavrilov, I. Yu. Sorokin, and R. A. Alexeev, “Experimental study of the features of the motion of liquid-phase particles in the interblade channel of the nozzle array of a steam turbine,” Power Technol. Eng., 51(1), 82 – 88 (2016).
G. A. Fillipov, V. G. Gribin, A. A. Tishchenko, I. Yu. Gavrilov, V. A. Tishchenko, S. V. Khomiakov, V. V. Popov, and I. Yu. Sorokin, “Steam injection impact on the performance of nozzle grid in wet-vapor stream,” Thermal Eng., 63(4), 233 – 238 (2016).
V. G. Gribin, A. A. Tishchenko, R. A. Alexeev, I. Yu. Gavrilov, S. V. Khomyakov, V. V. Popov, V. A. Tishchenko, and I. Yu. Sorokin, “Performance of a wet-steam turbine stator blade with heating steam injection,” in: Proc. 12th European Conf. Turbomachinery Fluid Dynamics & Thermodynamics ETC12 (April 3 – 7, 2017), Stockholm, Sweden, ETC2017-312.
S. V. Khomyakov, R. A. Alexeev, I. Y. Gavrilov, V. G. Gribin, A. A. Tishchenko, V. A. Tishchenko, and V. V. Popov, “Experimental study of the efficiency of steam injection on wet steam turbine (stator blade cascade),” J. Phys. Conf. Ser., 891, 012256 (2017).
I. Yu. Gavrilov, V. V. Popov, I. Yu. Sorokin, V. A. Tishchenko, and S. V. Khomyakov, “Contactless technique for determining the average sizes of erosion-hazardous droplets in polydisperse wet steam flow,” Thermal Eng., 61(8), 577 – 584 (2014).
N. V. Averkina, Yu. Ya. Kachuriner, V. G. Orlik, F. M. Sukharev, and M. A. Filaretov, “Experience gained from industrial use of heating of stationary plates for reducing erosion of moist-steam turbine stages,” Élektr. Stantsii, No. 2, 24 – 28 (2004).
Author information
Authors and Affiliations
Corresponding author
Additional information
The present study was carried out with support from a grant of the Russian Scientific Foundation (Project No. 17-79-10181).
Translated from Élektricheskie Stantsii, No. 8, August 2018, pp. 12 – 18.
Rights and permissions
About this article
Cite this article
Gavrilov, I.Y., Tishchenko, V.A. & Popov, V.V. Development and Evaluation of a Method of Reducing Erosion Wear of Impellers. Power Technol Eng 52, 563–569 (2019). https://doi.org/10.1007/s10749-019-00983-4
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10749-019-00983-4