Features of prolongation of the service life of high- and intermediate-pressure rotors of K-200-130 steam turbine of Luhansk TPP

Chernousenko O.Yu., Dr. Sci. (Eng.), Professor, Rindyuk D.V., Cand. Sci. (Eng.), docent, Peshko V.A., Cand. Sci. (Eng.)
National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", pr. Peremohy, 37, Kyiv, 03056, Ukraine
Language: Russian
Source: Problemy zahal`noi enerhetyky - The Problems of General Energy, 2018, 2(53):65-70
https://doi.org/10.15407/pge2018.02.065
Section: Operating reliability and safety of the functioning of energy facilities and systems
UDC: 621.165.62-192
Received: 22.05.2018
Abstract: At present, there is a significant quantity of DTEK “Energo” power units that already worked for their park lifetime. In particular, this concerns the K-200-130-3 steam turbine of 9th power unit of DTEK “Luhansk TPP”. There arises a necessity to make decision on the possibility of its further service. We estimated its residual lifetime based on 3D-spatial analogs of high- and intermediate-pressure rotors of the K-200-130-3 steam turbine of 9th power unit of DTEK “Luhansk TPP”. Here, the experimentally obtained safety factors of metal strength were taken into account, and the actual conditions of operation were determined according to the data of metal damage, obtained by the results of inspection of the state of metal of the power equipment. Recommendations for the re-prolongation of service lifetime of high-temperature power equipment are considered.
Keywords: safety factor, intermediate-pressure rotor, high-pressure rotor, static damage, cyclic damage, residual lifetime, low-cycle fatigue, long-term strength.
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