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Wyszukujesz frazę "steam turbine stage" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Proposal of modernisation of a steam turbine stage before extraction, CFD and CSD analysis
    Autorzy:
    Gardzielewicz, A.
    Karcz, M.
    Marcinkowski, S.
    Bielecki, M.
    Badur, J.
    Malec, A.
    Banaszkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1931599.pdf
    Data publikacji:
    2002
    Wydawca:
    Politechnika Gdańska
    Tematy:
    steam turbine stage
    flow and stress optimisation
    Opis:
    The paper presents an idea and analysis of application of a new solution of a stage before extraction in the modernised LP part of 200MW turbines with ND exhaust. The idea of the patent is to introduce to the turbine steam path a ring directing high energy tip leakage steam from the stage to the regenerative extraction. Owing to this it is possible to cheaply achieve some energy benefits from the operation of first heat exchanger which in the modernised 200MW turbine is continuously underheated. Ring design has been checked using CFD and CSD numerical codes.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2002, 6, 4; 577-589
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of stator-rotor interspace overlap of meridional contours on the efficiency of high-pressure steam turbine stages
    Autorzy:
    Rusanov, Andrii
    Rusanov, Roman
    Powiązania:
    https://bibliotekanauki.pl/articles/1845496.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    high-pressure steam turbine
    cavern
    overlap
    impulse type stage
    reactive type stage
    Opis:
    The results of a systematic study of the influence of meridional contours overlap in the stator-rotor axial interspace of the impulse and reactive type stages of a high-pressure steam turbine on the flow structure and gas-dynamic efficiency of the flow part are introduced. The studied flow parts of the impulse and reactive stages are typical for high-power high-pressure steam turbines. It is shown that the stages that have no overlaps and/or have a smooth shape of meridional contours have the best gasdynamic efficiency, and the most negative effect on the flow part is caused by the presence of caverns in the stator-rotor interspace. For cases where, due to technological limitations, it is impossible to avoid the presence of caverns and overlaps with a sharp (step-wise) change in the shape of the meridional contours, it is recommended to perform overlaps with positive size of overlap values near the rotor blades.
    Źródło:
    Archives of Thermodynamics; 2021, 42, 1; 97-114
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of last stage blade of 13K215 turbine intermediate pressure module
    Autorzy:
    Bondyra, Radosław
    Przytulski, Jan
    Dominiczak, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2091352.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    efficiency
    strength calculation
    steam turbine
    last stage blade
    fluid flow
    calculation
    Opis:
    Paper is considering the purpose and the process of development of last stage blade for intermediate pressure module of 13K215 steam turbine. In the last 20–30 years most of the steam turbine manufacturers were focused on improving such a turbine mainly by upgrading low pressure module. In a result of such a modernization technology were changed from impulse to reaction. The best results of upgrading were given by developing low pressure last stage blade. With some uncertainty and based on state of art knowledge, it can be stand that improving of this part of steam turbine is close to the end. These above indicators show an element on which future research should be focused on – in the next step it should be intermediate pressure module. In the primary design the height of intermediate pressure last stage blade was 500 mm but because of change of technology this value was decreased to 400 mm. When to focus on reaction technology, the height of the last stage blade is related to output power and efficiency. Considered here is the checking the possibility of implementing blades, in a reaction technology, higher than 400 mm and potentially highest. Article shows a whole chosen methodology of topic described above. It leads through the reasons of research, limitations of 13K215 steam turbine, creation of three-dimensional models, fluid flow calculations, mechanical integrity calculations and proposed solutions of design.
    Źródło:
    Archives of Thermodynamics; 2022, 43, 1; 45--62
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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