A pumped-storage hydropower generation tower employing conduit turbines installed in multiple stages, according to the present invention, comprises: a pump (400) disposed in a pumping-up pipe (410) so as to pump up water that fills a lower reservoir (300) to an upper reservoir (200); a water-guide pipe channel (500) having an inlet water-guide conduit (510) connected to the bottom surface on one side of the upper reservoir (200) so as to extend to the position of the lower reservoir (300) along a helical sloping channel (100) such that a flow rate for power generation passes therein; and a conduit turbine unit (600) comprising a driving shaft (2) extending through the center of a conduit (22) through which the flow rate passes, conduit support bodies (4) installed so as to rotate freely while supporting the driving shaft (2), the conduit support bodies (4) having arms (6) extending toward the inner surface of the conduit (22), a propeller (7) fixed to the driving shaft (2) between the conduit support bodies (4) so as to be rotated by movement of the flow rate, and a generator (10) configured to receive rotational power from the driving shaft (2) and to generate electricity, wherein at least two conduit turbine units (600) are disposed in multiple stages along the water-guide pipe channel (500).

A pumped-storage hydropower generation tower employing conduit turbines installed in multiple stages, according to the present invention, comprises: a pump (400) disposed in a pumping-up pipe (410) so as to pump up water that fills a lower reservoir (300) to an upper reservoir (200); a water-guide pipe channel (500) having an inlet water-guide conduit (510) connected to the bottom surface on one side of the upper reservoir (200) so as to extend to the position of the lower reservoir (300) along a helical sloping channel (100) such that a flow rate for power generation passes therein; and a conduit turbine unit (600) comprising a driving shaft (2) extending through the center of a conduit (22) through which the flow rate passes, conduit support bodies (4) installed so as to rotate freely while supporting the driving shaft (2), the conduit support bodies (4) having arms (6) extending toward the inner surface of the conduit (22), a propeller (7) fixed to the driving shaft (2) between the conduit support bodies (4) so as to be rotated by movement of the flow rate, and a generator (10) configured to receive rotational power from the driving shaft (2) and to generate electricity, wherein at least two conduit turbine units (600) are disposed in multiple stages along the water-guide pipe channel (500).

A tidal power generation device includes a container assembly and a power generation device arranged in the container assembly. A water inlet of the container assembly allows a tidal water flow to enter. An entrance guide plate of the container assembly causes the water flow to advance in the direction of the power generation device to push the power generation device's thrust plates, and thereby driving the power generation device's thrust plate traction mechanism to make a power generator of the power generation device convert kinetic energy into electrical energy. After the water flow pushes the thrust plates, it enters a pressure accumulating pool of the container assembly. Then, the water flow in the pressure accumulating pool flows to a backflow guide plate of the container assembly, and flows to a first pressure relief pool of the container assembly to continue pushing the thrust plates.

A guide vane bearing for a hydraulic machine is provided, which may be serviced from the side of the water flow path, and a method for installing and removing a bearing of this type. The guide vane bearing includes a bearing support and a layer of bearing material and at least three segments, which are separately connectable to the bottom ring of the hydraulic machine, each segment including one part of the bearing support and one part of the layer of bearing material, and a joint between the segments being obliquely formed with respect to the bearing axis, so that one segment has a wedge shape, and the bearing furthermore including a bearing seal, and the bearing seal being rotatably fixedly connected to the trunnion of the guide vane, and the bearing support including a surface, which is designed as a running surface for the lip of the bearing seal.

A hydraulic machine has a runner, a guide apparatus, a draft tube, and an apparatus for measuring the water level in the region of the draft tube. The apparatus includes a first pressure measuring device, a second pressure measuring device, and a unit for generating differential pressure values. The pressure measuring devices are arranged in such a way that they may detect the pressures applied inside the draft tube and are respectively connected to the unit. The first pressure measuring device is located above the second pressure measuring device, and the unit is configured to generate the difference between the pressures that the pressure measuring devices detect. There is also described a method for dewatering the runner of such a hydraulic machine.

The hydroelectric generator using a conduit turbine, is characterized in that at least two conduit turbine units are serially arranged in multiple levels, the conduit turbine units each comprising: a driving shaft which penetrates the center of a conduit through which a flow for electric generation passes to the inside; a conduit support main body which is provided so as to support the driving shaft, and has an arm extending towards the inner surface of the conduit; a propeller which is between two conduit support main bodies, is fixed to the driving shaft, and rotates by means of the movement of the flow; an internal gear which rotates together with the driving shaft from between the conduit support main bodies; an external gear which is driven together with a shaft, outside the conduit, as a rotational force is delivered to the internal gear; and an electric generator.

Mechanical movement exerted upon or over roadways is transmitted and converted to mechanical movement conducive towards the production of electrical energy. In one disclosed system, ramped or angled push bars are disposed within a roadway, such that a front set of bars and back set of bars will not be moved simultaneously. A series of one way values may enable subterranean fluid chambers to move a pendulum flywheel or rotor in a continuous direction or in a back and forth movement.

A repair device for burnout of a stator iron core in a giant hydraulic turbine generator, and a repair method thereof are provided. The repair device includes toothed plates, ventilation slots, binding holes, ventilation holes, and binding cables. Each of the toothed plates is matched with a burnout area in the middle of the iron core, such that two ends of the toothed plate are in contact with plate assemblies. The binding cables rotatably pass through the binding holes and are pulled tightly to bind the toothed plates and coil bars into an integral structure. The present disclosure solves the problem of influence on the power generation benefit during the flood season due to long re-lamination cycle after burnout of the middle of the stator iron core of the hydraulic turbine generator.

A repair device for burnout of a stator iron core in a giant hydraulic turbine generator, and a repair method thereof are provided. The repair device includes toothed plates, ventilation slots, binding holes, ventilation holes, and binding cables. Each of the toothed plates is matched with a burnout area in the middle of the iron core, such that two ends of the toothed plate are in contact with plate assemblies. The binding cables rotatably pass through the binding holes and are pulled tightly to bind the toothed plates and coil bars into an integral structure. The present disclosure solves the problem of influence on the power generation benefit during the flood season due to long re-lamination cycle after burnout of the middle of the stator iron core of the hydraulic turbine generator.

A generating apparatus for generating electrical power from a water flow to electrical energy includes a pump; pipes; tidal stream generation devices; and drains. The pump is connected to and in fluid communication with the pipes. The pump may pump seawater to the pipes and sweater may further flow to the tidal stream generation devices so that the tidal stream generation devices may generate electrical power from a seawater flow to electrical energy. The tidal stream generation device includes a turbine driven by seawater, a shaft co-rotated with the turbine, a reduction gearbox operatively connected to the shaft, an output shaft extending out of the reduction gearbox, and an alternator driven by the output shaft to convert mechanical energy to electrical energy in the form of AC, and an electrical grid electrically connected to the alternator. The drain is connected to the pipe for flowing seawater to the sea.