Hydraulic speed-increasing transmission for water current powered turbine
AssigneeMarine Current Turbines Limited
InventorPeter Fraenkel
Life of this patent
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Abstract
A hydraulic transmission system for use with at least one water current driven turbine rotor (6), low speed high pressure pump (24) is arranged to receive operational drive from the turbine rotor, and to deliver its output to a high speed hydraulic motor or turbine (35) in such manner as to produce an increase of the shaft or motor speed accompanied by a corresponding reduction of torque required to drive electrical generators (38) or other high speed machinery.
Claims22
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A hydraulic transmission system for use with at least one water current driven turbine rotor, the transmission system comprising:
- a first pump adapted to be coupled to an output of a water current driven turbine rotor, a second pump adapted to be coupled to a drive shaft, a fluid coupling between an output of the first pump and an input of the second pump for conveying water pressurized by the first pump to the second pump, an intake for receiving water from any surrounding body of water in which the transmission system is submerged, a filter coupled to the intake for filtering any water received through the intake, a header tank coupled to the filter for storing water that has passed through the filter, and a fluid coupling between an outlet of the header tank and an inlet to the first pump for supplying water to the first pump.
A marine turbine installation comprising a support column fixed to a substrate lying below a body of water in which currents exist, a turbine coupled to the support column having a rotor positionable in the body of water for interaction with the water currents, the rotor having an output shaft, a first pump coupled to the output shaft, a second pump coupled to a drive shaft of an electrical generator, a fluid coupling between an output of the first pump and an input of the second pump for conveying water pressurized by the first pump to the second pump, an intake for receiving water from the body of water, a filter coupled to the intake for filtering any water received through the intake, a header tank coupled to the filter for storing water that has passed through the filter, and a fluid coupling between an outlet of the header tank and an inlet to the first pump for supplying water to the first pump.
Dependencies are inferred from the claim text.