Комбинированная противоэрозионная защита рабочих лопаток последних ступеней мощных паровых турбин

Abstract

This paper presents theoretical and experimental substantiation of the new approach to the creation of highly efficient erosion-preventive protection for the blades of a combined type of the last stages of power turbines manufactured by the JSC "Turboatom". It has been shown that the numerical experiment carried out based on the complex mathematical erosion model that takes into consideration the main operation processes in the flow pass and contemporary technologies for the creation of new erosion resistant coatings using the method of atom-&-ion sputtering (AIS) of the materials in vacuum allows us to substantially increase the erosion stability of the blades through the rational combination of the measures taken to provide active and passive erosion protection for the last stages of powerful steam turbines developed by JSC "Turboatom".