A vertical twin rotor water turbine apparatus and method for extracting energy from a flow of water is described herein. The described apparatus delivers favourable performance by virtue the operation of a novel configuration of a plurality of central cores with at least one blade member extending from each core and flow directors to increase the effectiveness and efficiency of said device.

A vertical twin rotor water turbine apparatus and method for extracting energy from a flow of water is described herein. The described apparatus delivers favourable performance by virtue the operation of a novel configuration of a plurality of central cores with at least one blade member extending from each core and flow directors to increase the effectiveness and efficiency of said device.

A runner for a hydraulic machine comprising a band, a crown, a plurality of blades extending between the crown and the band, wherein the runner comprises a plurality of runner segments which together define the runner, each runner segment comprising a band portion, a crown portion and a blade, which portions are integrally formed with one another, each runner segment being attachable to another segment at a band joining edge and a crown joining edge, wherein the band joining edge and the crown joining edge are each spaced apart from the blade of the segment.

A runner for a hydraulic turbine configured to reduce fish mortality. The runner includes a hub and a plurality of blades extending from the hub. Each blade includes a root connected to the hub and a tip opposite the root. Each blade further includes a leading edge opposite a trailing edge, and a ratio of a thickness of the leading edge to a diameter of the runner can range from about 0.06 to about 0.35. Further, each blade has a leading edge that is curved relative to a radial axis of the runner.

The present invention relates to a self-powered remote control system for a smart valve, the system comprising: a smart valve for regulating the flow of a fluid in a pipe; a sensing module for sensing the flow rate, pressure, and temperature of the fluid in the pipe; a power generation module for generating power according to the flow of the fluid; a control module for controlling the lifting or lowering of the opening/closing plate of the smart valve according to the flow rate, pressure, or temperature state sensed by the sensing module; and an administrator terminal for transmitting and receiving control signals to and from the control module, wherein the power generation module comprises: a conical fluid guide member provided in a direction in which the fluid is supplied; and a rotating member rotated by the fluid guided through the fluid guide member, whereby the operation of the smart valve can be controlled by manipulating the administrator terminal at a remote location, so as to supply the fluid into the pipe or intercept the supply of the fluid into the pipe.

The present invention relates to a waterpower stream amplifier device primarily comprised of a body with an outer surface further comprised of at least one exterior protrusion and an interior surface further comprised of at least one angular flow director. The device can be placed/combined with the rotor of an underwater hydroelectric turbine in order to concentrate and multiple the energy of the water stream entering the turbine. The at least one angular flower director of the interior surface, the at least one exterior protrusions and at least one longitudinal opening of the outer surface allows water to enter the interior surface of the body from all directions. As a result, a rotating water vortex is created within the interior surface as the water travels from the first end towards the second end.

A wicket gate for a hydraulic turbine or pump contains a blade being defined by a pressure surface, an oppositely facing suction surface, a leading edge and a spaced apart trailing edge, a first trunnion, a second trunnion, an air inlet aperture, an air passage and at least one air outlet aperture. The profile of the suctions side surface of the blade along a cross section through a point P1 and a point P2 is concave. Whereas point P1 is located on the suction side surface of the trailing edge where an air outlet aperture is located and point P2 is spaced apart from point P1 by less than 10% of the wicket gate length D and point P2 is located upstream of point P1 on a line perpendicular to the trailing edge starting at point P1.

A runner for a hydraulic machine comprising a band, a crown, a plurality of blades extending between the crown and the band, wherein the runner comprises a plurality of runner segments which together define the runner, each runner segment comprising a band portion, a crown portion and a blade, which portions are integrally formed with one another, each runner segment being attachable to another segment at a band joining edge and a crown joining edge, wherein the band joining edge and the crown joining edge are each spaced apart from the blade of the segment.

A hydraulic machine of the Francis-type includes: an impeller with blades; a guide vane assembly with a ring of guide vanes, a vane-free space extending between the impeller and the guide vane assembly; and at least three resonators for suppressing pressure fluctuations, the resonators respectively including a chamber and a tube connector, the tube connector being connected to the chamber, the tube connector including an end that faces away from the chamber and that opens into the vane-free space, the resonators being configured for suppressing the pressure fluctuations occurring during the operation of the hydraulic machine, the resonators being arranged at a uniform distance from each other in a circumferential direction around the impeller, and the resonators being adjusted to a resonant frequency which is one and the same relative to one another.

A turbine apparatus (10) for deployment in a waterway, comprises a rotor support system (12), a rotor mechanism (14) and a power take-off device (16). The rotor support system (12) is operable to support and align the rotor mechanism (14) with a direction of flow of flowing water in the waterway. Deployment of the turbine apparatus (10) in flowing water generates power. The rotor support system (12) includes an elongated shaft (13), which includes a buoyancy adjusting component (17); a flexible coupling (15) at a first end; and the rotor mechanism (14) being attachable to a second free end of the elongated shaft (13). The flexible coupling (15) facilitates connection of the first end of the elongated shaft to a support structure and facilitates a substantially freely yawing connection of the axial flow turbine apparatus to a support structure located in the waterway in which the turbine apparatus is deployed. The flexible coupling (15) also controls pitching motion of the turbine apparatus (10) relative to the support structure; and in use, permits a predetermined range of yawing motion of the turbine apparatus relative to the support structure; and responds to changes in flow of the flowing water, to maintain the turbine apparatus (10) with a compliant attitude, thereby maintaining alignment of the axis of the elongated shaft and the rotor mechanism with the direction of flow. The buoyancy adjusting component (17) being operable to maintain the deployed turbine apparatus with substantially neutral buoyancy relative to the waterway in which the turbine apparatus is deployed.