Underwater power station
AssigneeInvestselskabet Jo Aps
InventorsBent HILLEKE, Klaus WESTERGAARD SØRENSEN
Life of this patent
Estimating the term…
Abstract
A turbine for an underwater power station includes a rotor drum having blades that for each revolution are moved in and out of the drum, where the two end-edges of each of the blades are arranged slidingly in a corresponding stabilizing, linear, radially-oriented grooves in a rotational plate that is oriented perpendicular to the rotational axle. This way, the ends of the blades are supported when exposed to water flow while being outside the drum.
Claims15
1-16. (canceled)
An underwater power station comprising a turbine, the turbine comprising a base and a rotor that is rotationally supported by the base and configured for being rotationally driven by the force of water flowing through the turbine:
- wherein the rotor comprises a drum suspended on a rotation axle:
- wherein the rotor comprises a plurality of blades, wherein each of the blades is delimited by an rear edge, an front edge, and two end-edges, one at either end of the blade:
- wherein the drum comprises a longitudinal axis and one slot for each one of the blades, wherein each one of the blades is suspended slidingly in such one of the slots and arranged for sliding into this slot during a first part of revolution of the rotor and out of this slot during a second part of revolution of the rotor:
- wherein the drum is arranged between two rotational lateral flanges and fixed to the rotational lateral flanges for rotating together:
- wherein the rotational lateral flanges extend radially outwards from the drum,
- characterised in that the turbine comprises a stationary support arranged adjacent to at least one of the rotational lateral flanges, wherein a plurality of permanent magnets are attached to at least one of the rotational lateral flanges, wherein the permanent magnets are distributed along a first circular path corresponding to a circle having a center coinciding with the longitudinal axis of the drum, wherein a plurality of coils are attached to the support, wherein the coils are distributed along a second circular path of the same size as the first circular path and corresponding to a circle having a center coinciding with the longitudinal axis of the drum, wherein the coils are electrically connected to wires arranged to conduct electric current generated by induction upon rotation of the rotor.
The underwater power station according to claim 1, wherein a plurality of permanent magnets is attached to both rotational lateral flanges, wherein the permanent magnets are distributed along a circular path corresponding to a circle having a center coinciding with the longitudinal axis of the drum, wherein a plurality of coils are attached to the supports adjacent to each of the rotational lateral flanges (14A, 14B).
The underwater power station according to claim 1, wherein the permanent magnets are integrated in rotational lateral flanges made of plastic, wherein the permanent magnets are enclosed by plastic.
The underwater power station according to claim 1, wherein the coils are integrated in a support made of plastic, wherein the coils are enclosed by plastic.
The underwater power station according to claim 1, wherein the permanent magnets and the coils have the same cross-sectional area.
The underwater power station according to claim 1, wherein each of the two end flanges comprises a plurality of radial grooves, of which each one is aligned with only one of the slots and extends radially outward from the corresponding slot:
- wherein each pair of end-edges of each one of the blades (is suspended slidingly in a corresponding pair of parallel radial grooves for being supported in the grooves and stabilized by the grooves in both rotational lateral flanges when moving radially outside the slot.
Dependencies are inferred from the claim text.