The influence of labyrinth seals on the dynamic state of large power engineering objects

• Autorzy: Prońska A.
• Języki publikacji: EN

Abstrakty

EN

In the research conducted has been an assesement on the influence of the labyrinth seals in the 13K215 turboset on the dynamic properties of the machine working under stable conditions, as well as when there was a reduction in the systems stability margin. The existing complex and nonlinear model of the 13K215 turboset and the application software for the model's dynamic investigation were used, coupling with two models of the seals. One - a very simplified model, the so-called bearings model, where the barriers in the form of labyrinth plates are neglected allowed the use of a code for the analysis of the static and dynamic properties of the slide bearings. The second one - much more complicated, the so-called fluid-flow model, allowed the incorporation of the disturbance of flow, caused by the labyrinth plates. Applying computer analysis, utilising a methodology appropriate to model based diagnostics, the process of the system's instability was traced accounting for the forces generated in the seals obtained from the two models, above mentiond as well as in their absence. A comparison of these processes underlies the conclusions about the influence of labyrinth seals on the dynamic state of the investigated object and the comparison of the proposed models of the labyrinth seals.

Słowa kluczowe

EN

rotor dynamics; slide bearings; labyrinth seals

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN
• Czasopismo: Transactions of the Institute of Fluid-Flow Machinery
• Rocznik: 2003
• Tom: nr 114
• Strony: 91--98
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Prońska A.

• Institute of Fluid Flow Machinery PASci, ul. Fiszera 14, 80-952 Gdańsk, Poland,

Bibliografia

• [1] Kiciński J., Walczyk Z.: Dynamics of the Energy-Plant Turbosets, Fund> mental and Coupling Vibrations, Tech. Univ. of Gdańsk, 2001 (in Polish).
• [2] Prońska A.: Determination of stiffness and damping coefficients based on a bearings model of labyrinth seals of a turboset 1SK215, Tribologia Nr 2/2001 182 (in Polish).
• [3] Walczyk M., Walczyk Z.: Determination of stiffness and damping coefficier.rj of labyrinth seals of a turboset 13K215 based on codes LABIR and WIR PBZ/K015/T10/2001/54 Report, Gdańsk 2002 (in Polish).
• [4] Kiciński J., Markiewicz-Kicińska A.: A computer code NLDW-USZCZ fc comparison analysis of influence of labyrinth seals based on different modeli of seals (bearings model, fluid-flow model), IFFM PAS Internal Report, No. 2273/2002 (in Polish).