Development and implementation of a methodology for reverse engineering design of Francis turbine runners

Year 2019, Volume: 25 Issue: 4, 430 - 439, 28.08.2019

Kutay Çelebioğlu , Alper Kaplan

Abstract

Francis
type hydraulic turbine runners have complex blade shapes. Runner blades have
three dimensional profiles that direct the incoming flow. In this study, a
reverse engineering methodology is developed for the redesign of turbines.
Traditional reverse engineering steps are combined with the basics and flow
dynamics of hydraulic turbines and applied to two different turbine runners
(which have different specific speeds) of two different hydroelectric power
plants in operation. The methodology is first verified by application on the
first runner and utilized for the redesign of the runner of another power
plant. The reasons for the reduced performance of the second runner are
examined with the help of the new inverse engineering design methodology and a
rehabilitation study is performed. Thus, the runner which only provides 70% of
its installed capacity, is redesigned and can now utilize its full capacity.

Keywords

Simulation, Energy efficiency, Hydroturbine

Francis tipi su türbini çarkının tersine mühendislik ile tasarımı için bir yöntem geliştirilmesi ve uygulaması

Abstract

Francis tipi su
türbinlerine ait çark kanatlarının yapısı oldukça karmaşıktır. Üç boyutlu
profilleri ile gelen akışı yönlendirirler. Bu çalışmada, türbinlerin yeniden
tasarımı için bir tersine mühendislik yöntemi geliştirilmiştir. Geleneksel
tersine mühendislik yöntemi, hidrolik türbin temel çalışma prensipleri ve
akışkanlar mekaniği temelleri ile birleştirilerek iki farklı kullanımda olan
santralin türbin çarkına (iki farklı özgül hızı olan) uygulanmıştır. Yöntem,
öncelikle bir santrale uygulanarak doğrulanmış, ardından diğer santralin türbin
çarkının yeniden tasarımında kullanılmıştır. İkinci santralin türbin çarkının
çalışmasındaki sorunların sebepleri yeni geliştirilen yöntem ile araştırılmış
ve çarkın rehabilitasyonu gerçekleştirilmiştir. Kapasitesinin %70’i verimle
çalışan çark, tam kapasite çalışır hale gelmiştir.

Keywords

Simülasyon, Enerji verimi, Su türbini

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