An underwater turbine apparatus includes a nacelle, containing a generator; a rotor connected to a first end of the nacelle and in communication with the generator to cooperate therewith to convert kinetic energy to electrical energy; a float connected to the nacelle; and a stabilizer connected to the nacelle; a tower connected to the nacelle by a joint; a base supporting the tower; an auger protruding from the underside of the base; and a motor for driving the auger, operable to drill the auger into engagement with an installation surface for the underwater turbine. A method for installing an underwater turbine apparatus includes rotating an auger, on the underwater turbine apparatus, to engage a seafloor.

A turbine unit for a hydraulic installation, and more in particular it deals with the hub of the turbine unit. The present invention proposes to provide means for adjusting a gap extent formed between the hub and the inner edge of the blade, this way dramatically increasing the performance of the turbine.

A turbine unit for a hydraulic installation, and more in particular it deals with the hub of the turbine unit. The present invention proposes to provide means for adjusting a gap extent formed between the hub and the inner edge of the blade, this way dramatically increasing the performance of the turbine.

A hand-held turbine cleaning tool includes front and rear housings coupled to each other, an outlet at one end of the tool, and a top of the tool at an opposed end. The outlet is directed in a first direction away from the top. An inlet is disposed between the outlet and the top and is also directed in the first direction. A diverter valve at the inlet is moveable between on and off positions. The on position directs water flowing into the inlet from the inlet, up to the top in a second direction opposite the first direction, and then down to the outlet in the first direction. A turbine at the top has a turbine shaft that extends outside the tool. An abrasive member is connected to the turbine shaft and is configured to rotate when water flows from the inlet to the outlet.

A pool cleaning tool includes a front housing and a rear housing coupled together, an intake, an outlet, a turbine disposed within the front and rear housings, and a three-way diverter valve proximate the intake. The tool includes an abrasive member, rigidly coupled to the turbine, mounted outside the front and rear housings for rotation with the turbine. The three-way diverter valve has an on position in which water drawn into the intake is communicated into the tool, up to the turbine, and then out the outlet, thereby imparting rotation to the turbine and to the abrasive member.

A turbine assembly for installation inside a pipe section in which a fluid flows. The turbine assembly includes a shaft and one or more blades. The shaft is couplable to a generator and has a portion positionable inside the pipe section. The blade(s) is/are attached to the portion of the shaft. The blade(s) is/are pushed upon by the fluid as the fluid flows within the pipe section causing the one or more blades to rotate the shaft. The shaft is operable to cause the generator to generate electricity as the shaft is rotated by the blade(s). A pressure of the fluid is reduced as the fluid pushes on the blade(s) and causes the blade(s) to rotate the shaft.

A turbine assembly for installation inside a pipe section in which a fluid flows. The turbine assembly includes a shaft and one or more blades. The shaft is couplable to a generator and has a portion positionable inside the pipe section. The blade(s) is/are attached to the portion of the shaft. The blade(s) is/are pushed upon by the fluid as the fluid flows within the pipe section causing the one or more blades to rotate the shaft. The shaft is operable to cause the generator to generate electricity as the shaft is rotated by the blade(s). A pressure of the fluid is reduced as the fluid pushes on the blade(s) and causes the blade(s) to rotate the shaft.

Embodiments of the present invention generally relate to a runner unit of a tidal power plant, and more particularly to a device for reversing a blade of the runner unit. The device according to the embodiments is lighter and more efficient with respect to known solutions which involve articulated mechanisms as it is based on a reversing servomotor including an annular piston which acts on the blade to be reversed.

Embodiments of the present invention generally relate to a runner unit of a tidal power plant, and more particularly to a device for reversing a blade of the runner unit. The device according to the embodiments is lighter and more efficient with respect to known solutions which involve articulated mechanisms as it is based on a reversing servomotor including an annular piston which acts on the blade to be reversed.

An ocean tidal current energy power generating system, including a fixing mechanism, an ocean tidal current energy power generator set and a signal monitoring mechanism. The fixing mechanism includes floating bodies, fixing rods, horizontal supporting rods, and a working platform; the floating bodies are fixed to seabed by means of anchor chains; the fixing rods are fixed to the floating bodies; the horizontal supporting rods and the working platform are respectively fixed to underwater portions of the fixing rods and overwater portions of the fixing rods. The power generator set includes underwater assemblies and an overwater assembly. Each underwater assembly includes blades, a hub, a main shaft, a gear box, a coupling, a power generator, a stern cabin and a yawing mechanism, successively connected to each other; a variable pitch mechanism is disposed in the hub.