Lifting type guiding and shielding device for tidal current energy
A technology of diversion devices and diversion parts, which is applied in the direction of ocean energy power generation, reaction engines, mechanical equipment, etc., can solve the problems of reducing energy harvesting efficiency and hindering the rotation of water turbines, and achieves enhanced energy harvesting efficiency, simple profile, and Easy-to-manufacture effects
Inactive Publication Date: 2016-03-23
ZHEJIANG OCEAN UNIV
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Problems solved by technology
[0005] The defect of the current conventional tidal current energy generation unit is that: if the ordinary vertical axis turbine is used, when the tidal flow direction is perpendicular to the axial direction of the turbine, the blades of the turbine will rotate in the opposite direction to the direction of the incoming flow for half of the time, and the incoming flow will hinder the turbine. rotation
If the turbine is designed to rotate clockwise, when the blades of the turbine turn to the left, the direction of rotation will be opposite to the flow direction of the current flow, hindering the rotation of the turbine and reducing its energy-capturing efficiency
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[0016] figure 1 It is a perspective view of a symmetrical semi-shielding tidal current energy generating device using the diversion device, which consists of a diversion device 1, a power generation device and telescopic legs. Such as figure 2 and image 3 The flow guide device 1 shown is a unilateral flow guide device, which includes a flow guide part 111 and an impeller matching part 112. The flow guide device has a characteristic shape design, and has both shielding and flow guide functions. Its interior is a cavity type floating body structure, and the upper and lower sides of the shell are respectively opened with holes, which can be injected with ballast water and air to control the buoyancy of the shell in water, including the upper and lower surfaces and the side perpendicular to the horizontal plane, and the flow guide device 1 The upper and lower surfaces are planar structures parallel to the horizontal plane; there are four walls on the side of the flow guide dev...
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The invention discloses a lifting type guiding and shielding device for the tidal current energy. A guiding cover adopts special mold line design and is provided with two holes in the upper part and in the lower part respectively, ballast water can be injected into the guiding cover for adjusting buoyancy force, and the whole device can be fixed to the seabed through telescopic pile legs after sinking to the appropriate depth. Two flap type vertical shaft water turbines and shielding and guiding cases thereof are symmetrically arranged, and therefore the aggregation effect is improved, and the energy utilization rate is increased. The lifting type guiding and shielding device can work in deep-water channels and provide stable and continuous electric energy and is high in utilization rate of the tidal current energy.
Description
technical field [0001] The invention relates to the technical field of tidal current energy generation, in particular to a liftable tidal current energy diversion and shielding device. Background technique [0002] The tidal current mainly refers to the regular sea current generated along with the tidal phenomenon, and the tidal current changes its magnitude and direction twice a day. Tidal energy is different from tide. Tidal is the rise and fall of seawater caused by high tide and ebb tide. Tidal current is the horizontal movement of seawater. The energy carried by tide is potential energy, which can be utilized by damming and storing water for power generation, while tidal energy power generation is Directly use tidal currents to impact mechanical devices such as impellers to drive generators to generate electricity. [0003] Compared with conventional energy sources, tidal current energy has the following advantages: clean and renewable; large total energy reserves; reg...
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Login to View More IPC IPC(8): F03B3/16F03B13/26
CPCF03B3/16F03B13/26Y02E10/20Y02E10/30
Inventor 王化明吕俊黄作栋
Owner ZHEJIANG OCEAN UNIV