Název: | Static and dynamic analysis of 1 220 mm steel last stage blade for steam turbine |
Autoři: | Míšek, Tomáš Kubín, Zdeněk |
Citace zdrojového dokumentu: | Applied and Computational Mechanics. 2009, vol. 3, no. 1, p. 133-140. |
Datum vydání: | 2009 |
Nakladatel: | University of West Bohemia |
Typ dokumentu: | článek article |
URI: | http://www.kme.zcu.cz/acm/old_acm/full_papers/acm_vol3no1_p12.pdf http://hdl.handle.net/11025/1905 |
ISSN: | 1802-680X (Print) 2336-1182 (Online) |
Klíčová slova: | rotorové soustavy;vibrodiagnostika;parní turbíny;konstrukce;dynamika;kmitání |
Klíčová slova v dalším jazyce: | rotor systems;vibrodiagnostics;steam turbines;construction;dynamics;oscillations (physics) |
Abstrakt: | The 3 000 rpm 1 220 mm blade for a steam turbine was developed with application of new design features. The last stage moving blade is designed with an integral cover, a mid-span tie-boss connection and a fir-tree dovetail. With this configuration the blades are continuously coupled by the blade untwist due to the centrifugal force when the blades rotate at high speed, so that vibration control and increased structural damping are provided. Blade was tuned in order to eigen-frequencies were safely far from possible excitation. Because of connection members, the number of the resonant vibration modes can be reduced by virtue of the vibration characteristics of the circumferentially continuous blades. The last stage airfoil was optimalized from view of minimalization of its centrifugal force. In order to develop the 3 000 rpm 1 220 mm blade, the advanced analysis methods to predict dynamics behavior of the bladed structure were applied. Coupled rotor-blade analysis was also aim of the attention. To validate calculated results the verification measurement such as rotational vibration tests was carried out in the high-speed test rig. Relation of the friction damping of the bladed structure on amount of excitation level was also monitored and evaluated. |
Práva: | © 2009 University of West Bohemia. All rights reserved. |
Vyskytuje se v kolekcích: | Volume 3, number 1 (2009) Volume 3, number 1 (2009) |
Soubory připojené k záznamu:
Soubor | Popis | Velikost | Formát | |
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acm_vol3no1_p12.pdf | 327,86 kB | Adobe PDF | Zobrazit/otevřít |
Použijte tento identifikátor k citaci nebo jako odkaz na tento záznam:
http://hdl.handle.net/11025/1905
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