Semi-submersible type ocean energy power generation device

Abstract

The invention discloses a semi-submersible type ocean energy power generation device. The semi-submersible type ocean energy power generation device comprises a suspension platform and an impeller arranged on one side of the suspension platform, wherein the impeller comprises a rotating shaft and blades arranged on the rotating shaft; the blades comprise first arc-shaped parts, second arc-shaped parts, third arc-shaped parts and fourth arc-shaped parts, one ends of the first arc-shaped parts are tangent to the rotating shaft. When seawater flows, the seawater moves in the radial direction relative to the rotating shaft to push the blades to rotate, when the blades are rotated out of or in to the water surface, the fourth arc-shaped parts of the blades are parallel to the rotating shaft, due to the fact that the contact area between the blades and the seawater is small, the resistance of the water is also small, so that the loss of work is greatly reduced; and in addition, the number ofthe blades distributed in the axial direction is few, mutual shielding among the blades can be avoided, so that the stress area of the blades in the seawater is increased, and the conversion efficiency of the ocean energy is improved.

Description

technical field [0001] The invention relates to an offshore power generation device, in particular to an ocean energy power generation device. Background technique [0002] The patent document with the publication number "CN109611261A" discloses "a semi-submersible ocean energy power generation method and device", which includes an offshore platform, a generator is installed on the offshore platform, the generator is connected to an impeller through a transmission mechanism, and the blades of the impeller Arranged along the direction of the vertical fluid flow on the water surface, and the blades are in the shape of a straight plate. When the blade ends turn out or turn into the water surface, the contact area with the seawater is large, and the resistance of the water is also relatively large; in addition, the blades arranged on the impeller If the number is too large, the blades will block each other, thereby reducing the stressed area of ​​the blades in the water, resulti...

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Problems solved by technology

[0002] The patent document with the publication number "CN109611261A" discloses "a semi-submersible ocean energy power generation method and device", which includes an offshore platform, a generator is installed on the offshore platform, the generator is connected to an impeller through a transmission mechanism, and the blades of the impeller Arranged along the direction of the vertical fluid flow on the water surface, and the blades are in the shape of a straight plate. When the blade ends turn out or turn into the water surface, the contact area with the seawater is large, and the resistance of the water is also relatively large; in addition, the blades arranged on the impeller If the number is too large, the blades will block each other, which will reduce the force-bearing area of ​​the blades in the water, resulting in weak power generation capacity of the generator and lower energy conversion efficiency.

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