CPC F03B 11/04 (2013.01) [F03B 3/02 (2013.01); F05B 2260/603 (2013.01)] | 6 Claims |
1. A hydraulic turbine, comprising:
a runner having a shaft, a runner crown, and a runner tip;
blades fixed to the runner crown and rotatable around an axis of rotation in operation of the hydraulic turbine, each blade comprising a leading edge and a trailing edge;
a stationary head cover;
a first chamber located between the runner crown and the head cover or within head cover;
a second chamber located in the runner tip;
at least one passage for water defined between the first chamber and the second chamber;
the runner crown comprising an upper portion and a lower portion, the upper portion having a larger diameter than the lower portion such that a channel is defined between the upper and lower portions;
wherein the channel comprises a circular shape and a circular symmetry around the axis of rotation and leads to a discharge region below the runner; and
support structures joining the upper and lower portions of the runner crown.
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