Strength and gas dynamic methods of development of the axial turbine turbocharger

International Conference on Information Technologies in Business and Industry 2016

计算机科学;经济学;工业技术

Baturin, O.V.^1 ; Popov, G.M.^1 ; Kolmakova, D.A.^1 ; Goryachkin, E.S.^1

Samara National Research University, 34, Moskovskoe shosse, Samara

443008, Russia^1

关键词: Axial turbine;    Dynamic calculations;    Gas-dynamic method;    Rotor blades;    Stress state analysis;    Tangential displacements;    Turbine efficiency;    Work capacities;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/803/1/012015/pdf
DOI  :  10.1088/1742-6596/803/1/012015

来源: IOP

【 摘 要 】

The results of strength and gas dynamic improvement of the turbocharger TK-32 axial turbine are presented. The turbocharger is manufactured by LLC "Penzadieselmash" (Penza, Russian) and is used as unit boost for a diesel locomotive. The aim of this work was to ensure the turbine work capacity when the rotor speed is increased by 10% without efficiency reduction. The strain-stress state analysis indicated the region of high stresses on the rotor blade body at the level of 2/3 of root. These stresses exceed allowable values when the rotor speed increased. The variant of tangential displacement of the peripheral rotor blade section, allowing reducing the level of stress by 20%, was found. Gas dynamic calculation showed that the variant of rotor blade modernization results in an increase of efficiency by 0.4%. Also it was shown that the increase in turbine efficiency by 1% can be reached if the number of rotor blades is reduced by 13%. This recommendation was implemented and confirmed experimentally by the example of mass turbocharger TK-32 [1].