A method of diagnosing labyrinth seals in fluid-flow machines

• Autorzy: Krzyślak P. , Winowiecki M.
• Języki publikacji: EN

Abstrakty

EN

Steam turbines constitute fluid flow machines which are used for driving engines of power plants, merchant and naval ships. They are commonly applied in power industry to driving electric generators. One of the impotant elements which affect efficiency of steam turbines used in power industry and for ship propulsion is state of labyrinth sealings whose aim is to minimize losses associated with steam leakage within turbine casing. Until now to assess state of labyrinth sealings has been only possible after stopping the turbine and its dismantling in order to determine values of clearances in the sealings. This paper presents a method which makes it possible to assess state of labyrinth sealings without the necessity of stopping and dismantling the machine. This is the method which allows to assess on-line state of machine sealings during its operation.

Słowa kluczowe

EN

labyrinth sealings; steam turbines; sealing diagnostics

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2008
• Tom: nr 3
• Strony: 38--41
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Krzyślak P.

autor

Winowiecki M.

• Faculty of Mechanical Engineering Gdansk University of Technology Narutowicza 11/12 80-952 Gdansk, POLAND,

Bibliografia

• 1. K. Trutnowski: Beruhrungsfreie Dichtungen. VDI Verlag Dusseldorf, 1964
• 2. T. Dębicki, R. Puzyrewski: Analysing flow through circumferential gaps (in Polish). XI Fluid Mechanics Conference, Warsaw, 1993
• 3. T. Chmielniak: Thermal Turbines (in Polish). Publishers of the Silesian University of Technology, 1998
• 4. P. Krzyślak, M. Winowiecki: Diagnosing the state of the HP gland in turbine 13UC105 (in Polish). Alstom report, 2006
• 5. RP Patent Office: P-379431 – acknowledgement of patent submission. Flow seal in a fluid-flow machine and method of its diagnostics (in Polish). Warsaw, 2006.