Analysis of Stress-Strain State and Contact Pressures on Surfaces of Kaplan Runner Blade Bearing Bronze Bushes

An analysis of the existing and prospective blade seal designs for Kaplan runners was performed. The selected design type provides maximum ecological safety runners. A 3D model runner hub sector with trunnion, inner outer bushes trunnion generated taking into account cyclic symmetry based on modern automated engineering system. diagram application external loads from lever to given segment developed. contact problem formulated determine stress-strain state as well pressures at bronze trunnions in different operating conditions. finite element method, consideration load restraints software package calculations. Using calculation results, principal stress distribution diagrams pressure were obtained. Strength results processed using data diagrams, values determined. methodology further use analytical evaluation involving systems calculations comparison states performed old new seal.