The bluff body attaches to an elastic mount and is capable of generate vortex shedding when the elastic mount orients the bluff body in a flow-line traverse to a fluid flow and vibrates in response to the vortex shedding. A harvester is located within the bluff body and is capable of generating power above a specified threshold in response to the vibration.

A rotor for power driving includes a hub, a plurality of first fixed jibs, a plurality of second fixed jibs, and a plurality of outer vanes. The hub is adapted to be coupled with a shaft to rotate together in a single rotational direction. The first fixed jibs are arranged around the hub circumferentially. Each second fixed jib is engaged on an end of a corresponding first fixed jib. Each outer vane is elastically fixed at a corresponding second fixed jib and extends in a direction different from the single rotation direction when not acted upon by external forces such that the plurality of outer vanes, when acted upon by external forces, are elastically movable relative to corresponding second fixed jibs to drive the shaft to rotate along the single rotational direction and can rebound after removal of the external forces.

A method for generating power using a device in deep ocean is disclosed comprising a power generator, a hollow tube turbine platform configured to achieve a desired depth in the deep ocean, a submerging device attached to the turbine platform, a plurality of turbine blades assembly, and at least one power transmission-and-distribution cable.

A water turbine device is disclosed. The water turbine device includes a water shaft, a plurality of blade frames, a plurality of turbine blades, a pivot shaft and a blade control mechanism. The water shaft has a first axis. The plurality of blade frames are radially distributed around the water shaft. The plurality of turbine blades are mounted on the plurality of blade frames respectively. The pivot shaft is disposed on a corresponding one of the plurality of blade frames, has a second axis, and allows one of the plurality of turbine blades corresponding to the corresponding blade frame to be pivotally mounted on the corresponding blade frame. The blade control mechanism is disposed on an end opposite to the pivot shaft on the corresponding blade frame, wherein the turbine blade mounted on the corresponding blade frame has a stopper adjacent to the blade control mechanism.

A rotor 16 is provided, comprising a vertical rotation axis 12, and at least two rotor blades 18, 20, 22 arranged on the rotation axis 12, wherein at least one rotor blade 18, 20, 22 comprises a curved first portion 40, wherein the first portion 40 has a concave side 42 and a convex side 44, wherein a curved second portion 50 is arranged on the end 46 of the first portion 40 of the rotor blade 18, 20, 22 facing away from the rotation axis 12. The second portion 50 has a concave side 52 and a convex side 54, and the two portions 40, 50 are arranged in such a manner that, in the radial direction, the convex side 44 of the first portion 40 is followed by the concave side 52 of the second portion 50. Due to the design of the rotor blade 18, 20, 22, the rotor 16 has particularly high efficiency.

A turbomachine, comprising a housing, at least two blade wheels rotatably accommodated by the housing, at least two rotatably arranged blades, which are evenly distributed along a circle of the at least two blade wheels and mounted with an axle parallel to the axis of the corresponding blade wheel. According to the invention, each blade axle is connected to an adjusting element, which can be displaced relative to the shaft of the second blade wheel via a four bar link, which lies in a plane perpendicular to the blade axle and consists mainly of a square arm that is fixed to the axle of the blades, wherein a square arm is articulated to the bottom of the blade wheel, whereas the other end is connected to the end of the first square arm via a connecting axle.

The claimed invention relates to a turbine adapted to extract energy from the velocity of a streaming fluid such as wind, steam, tidal streams and water waves. The invented turbine is arranged with its axis of turbine rotation directed at substantially right angles to the current direction of the streaming fluid and comprising a kind of self-supported blade body which is rotationally symmetric and constructed by rotor blades integrated transversely and supported two by two, allowing the fluid to flow through the turbine with less turbulence compared to other types of turbines equipped with separate rotor blades.

An imaging system includes an imaging scope, a camera, an image processor, and a system controller. The imaging scope is configured to illuminate an object and capture light reflected from the object. The camera has a light sensor with a light-sensitive surface configured to receive the captured light from the imaging scope and generate a digital image representative of the captured light. The image processor is configured to receive the digital image from the camera and use at least one of a random sample consensus (RANSAC) technique and a Hough Transform technique to (i) identify a boundary between an active portion and an inactive portion of the digital image and (ii) generate boundary data indicative of a characteristic of the boundary. The system controller is configured to receive the boundary data from the image processor and use the boundary data to determine a parameter of the imaging system.

An underwater device for water power conversion includes multiple cups, each cup constituted by a bottomless cup member and a bottom plate fitted pivotally in a freely rotatable manner, wherein the bottomless cup member blocks flowing water in a standing state and makes flowing water pass through in a lying down state, generating flowing water resistance difference between the two states. The cups are installed in a continuous member of a waterwheel submerged in flowing water so that the cup stands in a forward advance path and lies down in a reverse advance path. A water blocking plate is also provided in the reverse advance path so as to utilize centrifugal force to turn the bottomless cup member from the lying down state to the standing state, thereby making the cup turn or circulate continuously in flowing water.

Provided is a hydroelectric power generator for a pipeline that is installed at a position in a pipeline to generate electricity using a rotating turbine by inducing a flow velocity of water therein and uses environment-friendly energy through the water velocity while varying in size in accordance with the size of a pipeline to generate electricity even at a low-speed stream. The hydroelectric power generator for a pipeline generates electricity with high efficiency by increasing an angular speed at the same flow speed by adjusting the number and radius of turbine blades.