The influence of stator-rotor interspace overlap of meridional contours on the efficiency of high-pressure steam turbine stages

• Autorzy: Rusanov Andrii , Rusanov Roman

Identyfikatory

DOI

10.24425/ather.2021.136949

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

high-pressure steam turbine; cavern; overlap; impulse type stage; reactive type stage

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2021
• Tom: Vol. 42, no 1
• Strony: 97--114
• Opis fizyczny: Bibliogr. 24 poz., rys.

Twórcy

autor

Rusanov Andrii

• The A. N. Pidgorny Institute of Mechanical Engineering Problems NAS of Ukraine, Dm. Pozharsky 2/10, 61046 Kharkiv, Ukraine

autor

Rusanov Roman

• The A. N. Pidgorny Institute of Mechanical Engineering Problems NAS of Ukraine, Dm. Pozharsky 2/10, 61046 Kharkiv, Ukraine

Bibliografia

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Uwagi

National Academy of Sciences of Ukraine was funding the research described in this article within the framework of the budgetary theme II-14-20 “Development of methods to increase the efficiency of high-pressure power units through the introduction of steam and gas technologies” under the program aimed to support the development of priority areas of research.

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).