The hydro turbine of the invention consists of a housing, which represents a stator part of hydro turbine, or a stator (S), and a rotor (R) that is assembled on the stator (S) through its axis so as to enable its rotation. The rotor (R) is designed as an axially symmetric body with flat lateral surfaces with a circular cross-section. The circular cross-section from both outer ends, that is from both flat lateral surfaces with a circular cross-section, decreases equally and continuously towards the middle, so that the rotor (R) has a narrowest cross-section in the middle. The decrease of the circular cross-section from both outer ends of the rotor (R) towards the central part of the rotor (R) is carried out such that the shape of the rotor (R) body in the longitudinal cross-section, that is, along the axis of the rotor (R), follows the shape of a parabolic curve or a sinusoidal curve. The rotor (R) has over its entire surface, in the longitudinal direction, that is along its axis, curved grooves (U). This kind of design of the hydro turbine enables that the water flows through the grooves (U) towards the middle part of the rotor (R), where it flows out and transfers all the momentum to the rotor (R), so that the hydro turbine can generate the torque (MR) even with small and variable flows.

A water flow turbine arrangement for capturing energy from water flows is provided. The arrangement includes: a base member (212); a generally open support structure (210) mounted to the base and upstanding therefrom, the support structure including plural legs (216) joined by a cross brace at or adjacent their upper ends; an electrical generator (230) mounted to the base; and shaft mounted turbine blades (220) mounted for rotation generally within the space occupied by the legs about a turbine axis. The turbine shaft (222) is supported at its upper end by the cross brace and is coupled to the generator at its lower end by a magnetic torque transmitting coupling, allowing complete fluid sealing of the generator's housing.

Certain embodiments are directed to a vertical axis unidirectional rotor for wave energy conversion, said rotor comprising a plurality of spatially distributed lift-type and/or drag-type blades and a shaft, said rotor performing unidirectional rotation in waves about the shaft that is vertically oriented.

A fluid mass movement electrical energy generation device and system may comprise a modular and scalable array of stationary tube-shaped modules containing small rotating turbines. Tube-shaped modules may be easily installed by anyone, almost anywhere fluid mass flow is present (including many locations not suited to conventional wind turbines) and may efficiently, safely and quietly capture energy from turbulent and inconsistent fluid flow patterns.

A liquid-filled hydroelectric generation device has a storage unit and at least one generating set. The storage unit has at least one generating chamber mounted in a bottom thereof. Each generating chamber has a closed end in a top thereof and an open end in a bottom thereof, and is connected with at least one inlet pipe. Each inlet pipe is bent into an inverted L shape and has a top end connected to the generating chamber and a bottom end spaced from the bottom of the storage unit. The at least one generating set is mounted respectively in the at least one generating chamber. Each generating set has a driving shaft, at least one blade wheel assembly mounted on the driving shaft, and a generator connected to the driving shaft. The liquid-filled hydroelectric generation device generates power stably regardless of the flow rate of the water source.

A compressor rotor assembly including a plurality of rotor disks axially spaced from each other, each rotor disk extending radially from an inner end to an outer end. Also included is a spacer extending axially from each rotor disk to engage an adjacent spacer extending from an adjacent rotor disk, the spacer and adjacent spacer disposed proximate the outer end of the respective rotor disks, the spacers forming an outer backbone of the compressor rotor assembly. Further included is an inner backbone of the compressor rotor assembly, the inner backbone comprising a plurality of backbone segments, each of the backbone segments extending axially from each rotor disk to engage an adjacent backbone segment extending from an adjacent rotor disk, the backbone segment and the adjacent backbone segment disposed proximate the inner end of the respective rotor disks.

A power generator for generating power using a liquid that can alternatively flow at a lower flow rate and at a higher flow rate. The power generator includes a conduit and a rotor mounted in the conduit so as to be rotatable about a rotation axis. The rotor includes a top set of blades provided in a conduit top portion and configured for rotating about the rotation axis when the liquid flows at the higher flow rate in the conduit. The rotor also includes a bottom set of blades provided in a conduit bottom portion and configured for rotating about the rotation axis when the liquid flows at the lower flow rate in the conduit. An output shaft protrudes from the conduit and is rotatable by at least one of the top and bottom sets of blades. The top and bottom blades have different configurations.

The present invention relates to a hydroelectric power generator using ebb and flow of seawater. More particularly, the hydroelectric power generator is able to continuously generate power through high tide and low tide created according to a tidal difference that continuously occurs, while being submerged in seawater, using a marine current that flows fast. The hydroelectric power generator is also able to utilize eco-friendly energy that does not require a reservoir by adjusting the amount of inflow of seawater and to be installed at various places, while being varied in size, as necessary.

An energy recovery system for generating electric power from flow out of a gas well includes a first flow path from a well to a pipeline comprising a turbine wheel coupled to a generator and a second flow path from the well to the pipeline. The second flow path is apart from the first flow path, and includes a valve. The first and second flow paths reside on a production site of the well.

A compressor rotor assembly including a plurality of rotor disks axially spaced from each other, each rotor disk extending radially from an inner end to an outer end. Also included is a spacer extending axially from each rotor disk to engage an adjacent spacer extending from an adjacent rotor disk, the spacer and adjacent spacer disposed proximate the outer end of the respective rotor disks, the spacers forming an outer backbone of the compressor rotor assembly. Further included is an inner backbone of the compressor rotor assembly, the inner backbone comprising a plurality of backbone segments, each of the backbone segments extending axially from each rotor disk to engage an adjacent backbone segment extending from an adjacent rotor disk, the backbone segment and the adjacent backbone segment disposed proximate the inner end of the respective rotor disks.