Importance

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Abstract

A Kaplan-type turbine includes a stator part and a rotor part; the stator part having a conduit, configured to convey a water flow towards an impeller having a rotation axis, and a stator of an electric generator, while the rotor part includes: an impeller having in turn: an ogive with at least three blades with variable angular setup with respect to an inclination axis substantially orthogonal to the rotation axis; a rotation shaft bearing the impeller; adjustments for adjusting the setup of the blades, defined inside the ogive and the rotation shaft; a rotor of the electric generator, fixed to the rotation shaft. The adjustments for adjusting the setup of the blade include for each blade: a load-bearing disc, from which one blade develops, which load-bearing disc is constrained to rotate on the ogive around the inclination axis; a lever, fixed to the load-bearing disc and developing radially inside the ogive; a manoeuvring rod, pivoted to the lever and to a drive slider.

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First Claim