Occurrence of cracks due to inadequate turbine shaft construction
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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 w...hole turbine.
Кључне речи:
fatigue / crack / turbine shaft / stress concentrationИзвор:
16th International Conference on Accomplishments in Mechanical and Industrial Engineering DEMI, 2023, 187-192Финансирање / 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 - CONF AU - Bulatović, Srđan AU - Aleksić, Vujadin AU - Zečević, Bojana AU - Prochaska, Biljana PY - 2023 UR - http://rims.institutims.rs/handle/123456789/679 AB - 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. C3 - 16th International Conference on Accomplishments in Mechanical and Industrial Engineering DEMI T1 - Occurrence of cracks due to inadequate turbine shaft construction EP - 192 SP - 187 UR - https://hdl.handle.net/21.15107/rcub_rims_679 ER -
@conference{ author = "Bulatović, Srđan and Aleksić, Vujadin and Zečević, Bojana and Prochaska, Biljana", year = "2023", abstract = "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 = "16th International Conference on Accomplishments in Mechanical and Industrial Engineering DEMI", title = "Occurrence of cracks due to inadequate turbine shaft construction", pages = "192-187", url = "https://hdl.handle.net/21.15107/rcub_rims_679" }
Bulatović, S., Aleksić, V., Zečević, B.,& Prochaska, B.. (2023). Occurrence of cracks due to inadequate turbine shaft construction. in 16th International Conference on Accomplishments in Mechanical and Industrial Engineering DEMI, 187-192. https://hdl.handle.net/21.15107/rcub_rims_679
Bulatović S, Aleksić V, Zečević B, Prochaska B. Occurrence of cracks due to inadequate turbine shaft construction. in 16th International Conference on Accomplishments in Mechanical and Industrial Engineering DEMI. 2023;:187-192. https://hdl.handle.net/21.15107/rcub_rims_679 .
Bulatović, Srđan, Aleksić, Vujadin, Zečević, Bojana, Prochaska, Biljana, "Occurrence of cracks due to inadequate turbine shaft construction" in 16th International Conference on Accomplishments in Mechanical and Industrial Engineering DEMI (2023):187-192, https://hdl.handle.net/21.15107/rcub_rims_679 .