Self-stabilizing system of a semi-submersible ocean current power generation device

Abstract

The invention discloses a self-stabilizing system of a semi-submersible ocean current energy generating device, which comprises a floating body, an impeller and a control box are installed on the floating body, a pumping and drainage mechanism is installed at one end of the floating body, the pumping and drainage mechanism includes a water storage tank, and one part of the water storage tank The side pipes are respectively connected with a drain pipe and a water suction pipe. The first piston and the second piston are respectively installed in the drain pipe and the water suction pipe. The first electric control valve is installed between the drain pipe and the water storage tank. There is a second electric control valve, the drain pipe is connected to the water outlet pipe, and the suction pipe is connected to the water inlet pipe. The tops of the drain pipe and the water suction pipe are respectively installed with a first electric control exhaust valve and a second electric control exhaust valve. The impeller is equipped with a liquid level sensor, which detects the water level, and cooperates with the controller and valve to pump or drain the seawater in the water storage tank, thereby controlling the buoyancy of the entire floating body and ensuring that the immersion depth of the impeller is not affected by seawater movement , to maintain stable power generation efficiency, and the pumping and drainage is only driven by seawater movement, without additional energy.

Description

technical field [0001] The invention relates to an offshore power generating device, in particular to a self-stabilizing system of a semi-submersible ocean current energy generating device. Background technique [0002] Semi-submersible ocean current power generation device, that is, part of the impeller blade is immersed in water, and part of it is exposed to the air to work. The ocean current impacts the impeller to rotate, and then drives the generator shaft connected to it to rotate to generate electricity. The impeller diving depth is 35%-65% of its diameter, and the impeller blades are curved blades. The work done by seawater on the impeller per unit time W=(ρAv^3) / 2, where ρ is the density of seawater, A is the cross-sectional area perpendicular to the flow direction of the seawater in the immersed water of the impeller, v is the flow rate of seawater, and the cross-sectional area is the same as that of the impeller. The width is related to the depth of immersion in ...

AI Technical Summary

Problems solved by technology

When the proportion of the impeller submerged in water is below 50%, the impeller blades in the water are completely thrust by the seawater, and the work done by the seawater on the impeller decreases with the decrease of the immersion depth; when the proportion of the impeller submerged in water is above 50% , although the immersion depth increases, the blades submerged in the water are not completely affected by the seawater thrust, and as the immersion depth increases, the resistance of some blades in the water also increases

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