State analisys of the upper ring of guide vane apparatus at hydro power plant Djerdap 1 carried out the basis of non destructive tests
Apstrakt
Vertical Kaplan turbines, with nominal power of 176 A/ITY, manufactured in Russia, have been instal-led in 6 hydroelectric generating units of hydro power plant "Djerdap 1". Turbines were designed for the lifetime of 40 years due to the required structural solution and the inability of performing periodic inspections and state analyses. Welded structure of the upper ring of guide vane apparatus is made by welding four segments made of St 3 steel together, in accordance with standard GOST 977/88. Ring segments were welded by using submerged arc welding (SAW). During the rehabilitation of turbine A6 nondestructive and destructive tests were per formed on parent material and welded joints in order to carry out the state analysis and estimation of level and causes of eventual degradation of the structure of the upper ring of guide vane apparatus at hydro power plant Djerdap I. This paper comprises results of magnetic particle tests and ultrasonic tests per formed on welded jo-ints. By ultr...asonic testing it was determined that there is a lack of root penetration in welded joints, as well as lamellar tearing in parent material. Analysis of the causes of parent metal degradation and occurrence of defects in welded joints of the upper ring of guide vane apparatus was carried out on the basis of results of experimental tests.
Ključne reči:
hydro turbine / the upper ring of guide vane apparatus / nondestructive testing / material degradation / welded jointIzvor:
Energija (Energija, ekonomija, ekologija), 2017, 19, 1-2, 245-249Izdavač:
- Savez energetičara
Finansiranje / projekti:
- Razvoj novih metodologija revitalizacije turbinske i hidromehaničke opreme hidroelektrana u zavisnosti od uzroka degradacije materijala (RS-MESTD-Technological Development (TD or TR)-35002)
Kolekcije
Institucija/grupa
Mašinski fakultetTY - JOUR AU - Arsić, Miodrag AU - Mladenović, M. AU - Savić, Zoran AU - Bošnjak, Srđan AU - Miković, Radovan PY - 2017 UR - https://machinery.mas.bg.ac.rs/handle/123456789/5259 AB - Vertical Kaplan turbines, with nominal power of 176 A/ITY, manufactured in Russia, have been instal-led in 6 hydroelectric generating units of hydro power plant "Djerdap 1". Turbines were designed for the lifetime of 40 years due to the required structural solution and the inability of performing periodic inspections and state analyses. Welded structure of the upper ring of guide vane apparatus is made by welding four segments made of St 3 steel together, in accordance with standard GOST 977/88. Ring segments were welded by using submerged arc welding (SAW). During the rehabilitation of turbine A6 nondestructive and destructive tests were per formed on parent material and welded joints in order to carry out the state analysis and estimation of level and causes of eventual degradation of the structure of the upper ring of guide vane apparatus at hydro power plant Djerdap I. This paper comprises results of magnetic particle tests and ultrasonic tests per formed on welded jo-ints. By ultrasonic testing it was determined that there is a lack of root penetration in welded joints, as well as lamellar tearing in parent material. Analysis of the causes of parent metal degradation and occurrence of defects in welded joints of the upper ring of guide vane apparatus was carried out on the basis of results of experimental tests. PB - Savez energetičara T2 - Energija (Energija, ekonomija, ekologija) T1 - State analisys of the upper ring of guide vane apparatus at hydro power plant Djerdap 1 carried out the basis of non destructive tests EP - 249 IS - 1-2 SP - 245 VL - 19 UR - https://hdl.handle.net/21.15107/rcub_machinery_5259 ER -
@article{ author = "Arsić, Miodrag and Mladenović, M. and Savić, Zoran and Bošnjak, Srđan and Miković, Radovan", year = "2017", abstract = "Vertical Kaplan turbines, with nominal power of 176 A/ITY, manufactured in Russia, have been instal-led in 6 hydroelectric generating units of hydro power plant "Djerdap 1". Turbines were designed for the lifetime of 40 years due to the required structural solution and the inability of performing periodic inspections and state analyses. Welded structure of the upper ring of guide vane apparatus is made by welding four segments made of St 3 steel together, in accordance with standard GOST 977/88. Ring segments were welded by using submerged arc welding (SAW). During the rehabilitation of turbine A6 nondestructive and destructive tests were per formed on parent material and welded joints in order to carry out the state analysis and estimation of level and causes of eventual degradation of the structure of the upper ring of guide vane apparatus at hydro power plant Djerdap I. This paper comprises results of magnetic particle tests and ultrasonic tests per formed on welded jo-ints. By ultrasonic testing it was determined that there is a lack of root penetration in welded joints, as well as lamellar tearing in parent material. Analysis of the causes of parent metal degradation and occurrence of defects in welded joints of the upper ring of guide vane apparatus was carried out on the basis of results of experimental tests.", publisher = "Savez energetičara", journal = "Energija (Energija, ekonomija, ekologija)", title = "State analisys of the upper ring of guide vane apparatus at hydro power plant Djerdap 1 carried out the basis of non destructive tests", pages = "249-245", number = "1-2", volume = "19", url = "https://hdl.handle.net/21.15107/rcub_machinery_5259" }
Arsić, M., Mladenović, M., Savić, Z., Bošnjak, S.,& Miković, R.. (2017). State analisys of the upper ring of guide vane apparatus at hydro power plant Djerdap 1 carried out the basis of non destructive tests. in Energija (Energija, ekonomija, ekologija) Savez energetičara., 19(1-2), 245-249. https://hdl.handle.net/21.15107/rcub_machinery_5259
Arsić M, Mladenović M, Savić Z, Bošnjak S, Miković R. State analisys of the upper ring of guide vane apparatus at hydro power plant Djerdap 1 carried out the basis of non destructive tests. in Energija (Energija, ekonomija, ekologija). 2017;19(1-2):245-249. https://hdl.handle.net/21.15107/rcub_machinery_5259 .
Arsić, Miodrag, Mladenović, M., Savić, Zoran, Bošnjak, Srđan, Miković, Radovan, "State analisys of the upper ring of guide vane apparatus at hydro power plant Djerdap 1 carried out the basis of non destructive tests" in Energija (Energija, ekonomija, ekologija), 19, no. 1-2 (2017):245-249, https://hdl.handle.net/21.15107/rcub_machinery_5259 .