Presence of crack due the constant exploitation of turbine shaft
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Приказ свих података о документуАпстракт
Designing, constructing and putting into operation a hydroelectric power plant includes complex
tasks. Stresses of turbine and hydromechanical equipment of hydro power plants arise during the
production of parts and assembly of equipment (residual stresses), in the process of performing
functional requirements in exploitation and in the disturbed process of exploitation.
After several decades of constant exploitation of the horizontal bulb turbine, which is an integral
part of the hydroelectric power unit, empirically, the formation of a crack occurs in the turbine
shaft due to the influence of corrosion, erosion and cavitation.
Through experimental tests and calculations it has been determined that values of bending stresses
of the turbine, which occur due to the action of fatigue and corrosion, as well as stress
concentration, are bigger than 25 MPa for flanges exposed to water, and in other case bigger than
40 MPa for flanges exposed to `corrosive water` and can cause the ...occurrence of surface cracks
on the transition radius between the cylindrical part of the shaft and the flange. It has been
determined that stress values in the zone under the influence of bending stresses were bigger than
allowable values, which led to the occurrence of many cracks due to fatigue corrosion. One of
those cracks caused the failure of the shaft and of the whole turbine.
Кључне речи:
crack / turbine shaft / fatigue / stress concentrationИзвор:
Advanced Technologies & Materials, 2023, 48, 1, 21-25Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200012 (Институт за испитивање материјала Србије - ИМС, Београд) (RS-MESTD-inst-2020-200012)
Институција/група
Institut za ispitivanje materijalaTY - JOUR AU - Bulatović, Srđan AU - Aleksić, Vujadin AU - Zečević, Bojana AU - Prohaska, Biljana PY - 2023 UR - http://rims.institutims.rs/handle/123456789/664 AB - Designing, constructing and putting into operation a hydroelectric power plant includes complex tasks. Stresses of turbine and hydromechanical equipment of hydro power plants arise during the production of parts and assembly of equipment (residual stresses), in the process of performing functional requirements in exploitation and in the disturbed process of exploitation. After several decades of constant exploitation of the horizontal bulb turbine, which is an integral part of the hydroelectric power unit, empirically, the formation of a crack occurs in the turbine shaft due to the influence of corrosion, erosion and cavitation. Through experimental tests and calculations it has been determined that values of bending stresses of the turbine, which occur due to the action of fatigue and corrosion, as well as stress concentration, are bigger than 25 MPa for flanges exposed to water, and in other case bigger than 40 MPa for flanges exposed to `corrosive water` and can cause the occurrence of surface cracks on the transition radius between the cylindrical part of the shaft and the flange. It has been determined that stress values in the zone under the influence of bending stresses were bigger than allowable values, which led to the occurrence of many cracks due to fatigue corrosion. One of those cracks caused the failure of the shaft and of the whole turbine. T2 - Advanced Technologies & Materials T1 - Presence of crack due the constant exploitation of turbine shaft EP - 25 IS - 1 SP - 21 VL - 48 DO - 10.24867/ATM-2023-1-004 ER -
@article{ author = "Bulatović, Srđan and Aleksić, Vujadin and Zečević, Bojana and Prohaska, Biljana", year = "2023", abstract = "Designing, constructing and putting into operation a hydroelectric power plant includes complex tasks. Stresses of turbine and hydromechanical equipment of hydro power plants arise during the production of parts and assembly of equipment (residual stresses), in the process of performing functional requirements in exploitation and in the disturbed process of exploitation. After several decades of constant exploitation of the horizontal bulb turbine, which is an integral part of the hydroelectric power unit, empirically, the formation of a crack occurs in the turbine shaft due to the influence of corrosion, erosion and cavitation. Through experimental tests and calculations it has been determined that values of bending stresses of the turbine, which occur due to the action of fatigue and corrosion, as well as stress concentration, are bigger than 25 MPa for flanges exposed to water, and in other case bigger than 40 MPa for flanges exposed to `corrosive water` and can cause the occurrence of surface cracks on the transition radius between the cylindrical part of the shaft and the flange. It has been determined that stress values in the zone under the influence of bending stresses were bigger than allowable values, which led to the occurrence of many cracks due to fatigue corrosion. One of those cracks caused the failure of the shaft and of the whole turbine.", journal = "Advanced Technologies & Materials", title = "Presence of crack due the constant exploitation of turbine shaft", pages = "25-21", number = "1", volume = "48", doi = "10.24867/ATM-2023-1-004" }
Bulatović, S., Aleksić, V., Zečević, B.,& Prohaska, B.. (2023). Presence of crack due the constant exploitation of turbine shaft. in Advanced Technologies & Materials, 48(1), 21-25. https://doi.org/10.24867/ATM-2023-1-004
Bulatović S, Aleksić V, Zečević B, Prohaska B. Presence of crack due the constant exploitation of turbine shaft. in Advanced Technologies & Materials. 2023;48(1):21-25. doi:10.24867/ATM-2023-1-004 .
Bulatović, Srđan, Aleksić, Vujadin, Zečević, Bojana, Prohaska, Biljana, "Presence of crack due the constant exploitation of turbine shaft" in Advanced Technologies & Materials, 48, no. 1 (2023):21-25, https://doi.org/10.24867/ATM-2023-1-004 . .