RUDN Journal of Engineering ResearchRUDN Journal of Engineering ResearchВестник Российского университета дружбы народов. Серия: Инженерные исследования2312-81432312-8151Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)3854510.22363/2312-8143-2024-25-1-30-37DSRDSRArticlesСтатьиResearch ArticleFailure Analysis of a Kaplan Turbine Blade in Iraq’s Haditha Hydropower PlantАнализ неисправности лопатки турбины Каплана на иракской гидроэлектростанции Хадитаhttps://orcid.org/0009-0009-0798-4317KhalidWaleed Mohammed RidhaХалидМохаммед Рида Валид

Ph.D. student, Department of Mechanical Engineering Technologies, Academy of Engineering

аспирант базовой кафедры машиностроительных технологий, инженерная академия

1042218144@rudn.ruhttps://orcid.org/0000-0003-0552-9950Reza KashyzadehKazemРеза Каши ЗадеКазем

Candidate of Technical Sciences, Professor, Department of Transport, Academy of Engineering

кандидат технических наук, профессор департамента транспорта, инженерная академия

reza-kashi-zade-ka@rudn.ruhttps://orcid.org/0000-0003-0251-31448272-2337GhorbaniSiamakГорбаниСиамак

Candidate of Technical Sciences, Associate Professor, Department of Mechanical Engineering Technologies, Academy of Engineering

кандидат технических наук, доцент базовой кафедры машиностроительных технологий, инженерная академия

gorbani-s@rudn.ruRUDN UniversityРоссийский университет дружбы народов15032024251VOL 25, NO1 (2024)ТОМ 25, №1 (2024)303702042024Copyright ©; 2024, Khalid W.M., Reza Kashyzadeh K., Ghorbani S.Copyright ©; 2024, Халид М.Р., Реза Каши Заде К., Горбани С.2024Khalid W.M., Reza Kashyzadeh K., Ghorbani S.Халид М.Р., Реза Каши Заде К., Горбани С.https://creativecommons.org/licenses/by-nc/4.0/legalcodehttps://journals.rudn.ru/engineering-researches/article/view/38545

Kaplan turbines are widely used in low-water-head and large-capacity hydropower plants. The design of such systems is based on long-term performance. Nevertheless, many failures are reported in the industry, which lead to economic losses for the purpose of major repairs or replacement of a part of the system. Therefore, it is very important to know the failures, their causes, and finally provide useful solutions for their prevention or early treatment. In the present article, the authors focused on the failure detection of a Kaplan turbine blade in an Iraqi hydropower plant, and then, determined the direction of their future research. Quantometric test, tensile test, compression test, microhardness test, metallographic examination and study of the damaged surface were conducted from damaged runner blade. It was revealed that the raw material for manufacturing runner blade of Kaplan turbine was 304 stainless steel by employing cold drawing or rolling process. In addition, annealing treatment has also been done. In addition, it was found that the predominant damage in the studied part was severe cavitation.

Турбины Kaplan широко используются на маловодных и крупнотоннажных гидроэлектростанциях. Конструкция таких систем основана на долгосрочной производительности. Тем не менее в отрасли сообщается о многих сбоях, которые приводят к экономическим потерям с целью капитального ремонта или замены части системы. Поэтому очень важно знать сбои, их причины и, наконец, предлагать полезные решения для их предотвращения или раннего лечения. В настоящем исследовании авторы сосредоточились на обнаружении неисправности лопатки турбины Каплана на иракской гидроэлектростанции, а затем определили направление своих будущих исследований. С поврежденной рабочей лопатки были проведены квантовометрические испытания, испытания на растяжение, на сжатие, на микротвердость, металлографическое исследование и исследование поврежденной поверхности. Выяснилось, что сырьем для изготовления рабочей лопатки турбины Каплана была нержавеющая сталь 304, полученная методом холодной вытяжки или прокатки. Так же, была проведена обработка отжигом. Кроме того, установлено, что преобладающим повреждением в исследуемой детали является сильная кавитация.

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