Keywords
mechanical pressure
growth of a fatigue crack ротор турбогенератора
механические напряжения
рост усталостной трещины
How to Cite
Abstract
It is shown, that short-term abnormal modes cause sharp increase in mechanical pressure in local zones of a rotor of a turbogenerator that can conduct to occurrence in a rotor of cracks. At the certain parameters growth of cracks under normal conditions operation begins. Growth rate of cracks depends on characteristics of metal of a rotor and the environment of cooling. By the example of turbogenerator TГB-300-2 it is shown, that maximum permissible time of his operation after an abnormal mode should not exceed 4000 hours, and the careful control of a condition of a material of a rotor is necessary for maintenance of his further operation. References 6, table 1, figures 2.
References
Beliaev N.M. Resistance of materials. - Moskva, 1956. - 856 p. (Rus)
Lesnik V.A., Mazurenko L.I., Fedorenko G.M, Cherednik V.I., Gruboi A.P. Research of no synchronous inclusion of generators in power network // Tekhnichna elektrodynamika. - 2009. - № 1. - Pp. 32-34. (Rus)
Mechanics of destruction and durability of materials. Reference book. Vol. 4. - Kyiv: Naukova dumka, 1988. - 680 p. (Rus)
Turbogenerators. Calculation and a design / V.V. Titov. - Leningrad: Energna,1967. - 896 p. (Rus)
Fedorenko G.M., Vaskovskyi Ju.M., Saratov V.O., Kuzmin V.V. Thermal loading of a rotor of a turbogenerator such as TГB-300 which is modernized on the basis of small account d-q technologies // Novyny enerhetyky. - No 5. - 1998.-Pp. 41-47. (Ukr)
Circular U-03-94 RAO “ EU of Russia ” About prevention of damages of rotors of turbogenerators by capacity 200-500 MW manufactures NPO "Elektrotiazhmash". - Moskva, 1994. - 15 p. (Rus)
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