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Content available Analiza dynamiczna turbozespołu energetycznego jako podstawa do zmiany jego konstrukcji
Kahsin M., Olszewski H., Walczyk Z., Miścicki M.
Diagnostyka
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2004
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Vol. 30, T. 1
229--236
PL
W pracy badano wpływ rekonstrukcji naprawczych turbozespołu energetycznego dużej mocy na jego dynamiczne charakterystyki - częstości i postacie drgań własnych. W obliczeniach uwzględniono wpływ gruntu, w którym osadzona jest dolna płyta fundamentu. Wyniki symulacji komputerowych porównano z dynamicznymi charakterystykami turbozespołu i jego fundamentu wyznaczonymi eksperymentalnie. Przedmiotem badań był turbozespół energetyczny AEG TG-A w elektrowni Pomorzany.
EN
Influence constructional changes of high power turbo set on dynamical characteristics - natural frequencies and natural forms were analyzed in this paper. Influence of soil together with lower plate of foundation was included in calculations. Results of computer simulations were compared with dynamical characteristics of turbo set and turbine set foundation experimental specified. High power turbine set AEG TG-A at power plant Pomorzany was object of the analysis.
2
Content available remote Lateral-torsional vibration analysis of the rotor-shaftbearing system using various mechanical models
Kiciński J., Rządkowski R., Szolc T., Walczyk Z.
Vibrations in Physical Systems
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2002
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Vol. 20
180--181
3
Content available remote Influence of the steam within seals and glands of the turbine on its rotor motion stability
Walczyk Z.
Polish Maritime Research
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2002
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Vol. 9, nr 2
12-20
EN
In the paper assumptions for turbine seal modelling as well as the calculation results of the motion stability of a great-output turbo-set rotor are presented. The Flow equation system was solved by using the linear perturbation method. On calculation of pressure distribution in the seal chambers it was possible to estimate values of the forces affecting the rotor in the seals. Problems of turbo-set rotor dynamics were solved with the use of the transfer matrix method where influences of partial turbo-set systems (bearing oil film, foundation, turbine seals) were modeled by dynamic characteristics dependent of rotor rotational speed and vibration frequency. The theoretical results were partly confirmed by experimental investigations. The calculation results presented in the paper have been a part of the more thorough analysis of the great-output, energy-plant turbo-set [17,18].
4
Content available remote Theoretical problems of the motion stability of turbine rotors
Walczyk Z.
Polish Maritime Research
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2001
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Vol. 8, nr 4
20-25
EN
The theoretical motion stability problems of the retors of great output turbosets are considered in the paper. The rotor motion equations are solved by using the transfer matrix method and applying complex variables. The motion stability is introduced according to the Lapunow idea. The theoretical results are applied to motion stability investigation of a 200 MW energy-plant turboset.
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