Movable blade tidal power generation device

Abstract

The invention relates to a movable blade-type tidal power generation device which comprises a rotary shaft, a transmission wheel, a fixing bracket, a fixing rod, a blade device and blade tracks for restraining the movement of the blade device, wherein the blade device comprises two groups of blades mounted alternatively in an included angle of 90 degrees; each group of blades comprise a connecting plate at the middle, a main blade, and telescopic blades at two ends; the rotary shaft is connected with the connecting plate through a guide block; hollow grooves are formed in two ends of the main blade; and the telescopic blades at the left and the right slide in the hollow grooves through pulleys. By mounting the two groups of blades alternatively in the included angle of 90 degrees, the blade at any position can perform rotation movement under the driving of a torque. The torque generated by the blades provided by the invention is greater than the torque generated by an ordinary rigid blade, so that the utilization rate of tidal power is high. In addition, the movable blade-type tidal power generation device is simple in structure, thereby being widely applied to the field of tidal power development and the like.

Description

technical field [0001] The present invention relates to a fluid impact type power generation device, more specifically, the present invention relates to a movable blade type tidal power generation device. Background technique [0002] With the large-scale use of non-renewable energy and the deterioration of the environment, green and environmentally friendly energy has attracted more and more attention. As a large and non-polluting energy, tidal energy has become the focus of people's research. Tidal energy refers to the potential energy of water formed by the ebb and flow of seawater. Tidal energy is ocean energy in the form of potential energy. It includes the energy contained in the two modes of movement of tides and currents. The tide contains huge energy in its ebb and flow. This energy is inexhaustible, non-polluting energy. [0003] The theoretical reserve of tidal energy in my country has reached 110 million kilowatts. There are many coastal areas in my country, esp...

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Problems solved by technology

The force on the hydrofoil of this equipment is determined by multiple parameters, and its control process is complicated, and the cost of research and development and production is high, which is not conducive to popularization and application; 3. The telescopic propeller ocean current energy generation device with application number 200610052522.1, this device is a telescopic propeller A spring or double-rod hydraulic cylinder is used to connect the hub to form the impeller. During one cycle of the impeller, when the telescopic blade is above the cylindrical hub, it will retract into the hub under the action of the spring or double-rod hydraulic cylinder and gravity. When it is positioned When the telescopic propeller is stretched out under the hub, it rotates under the action of the sea current. This device has poor stability when it relies on springs and gravity. Using a double-rod hydraulic cylinder to adjust the movement of the telescopic propeller requires a hydraulic pump to provide power, and the control process is complicated and costly. High, the torque produced by this device is also small; 4. The variable arm length vertical axis tidal current turbine generating set with the application number 201110154699.3, its principle is that the telescopic arm is dynamically extended or shortened during the rotation of the blade. When the normal direction of the telescopic arm is parallel to and perpendicular to the direction of the tidal current, the telescopic arm becomes the longest and shortest respectively. This device requires a complex structure such as the tidal current velocity sensor and hydraulic cylinder, and requires the use of hydraulic pumps to provide power support, requiring matching precision. High control complexity and high cost are not conducive to promotion

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