Telescopic wind-driven generator blade provided with cap-shaped blade tip

Abstract

The invention provides a telescopic wind-driven generator blade provided with a cap-shaped blade tip and belongs to the technical field of clean new energy. The telescopic wind-driven generator blade provided with the cap-shaped blade tip is provided with a main blade body (4) and a blade tip auxiliary blade body (2). The blade tip auxiliary blade body (2) can move in the longitudinal direction of the main blade body (4) relative to the main blade body (4) under the action of a pulling-back rope (6) and a pulling-away rope (10). One end of an auxiliary blade body ejector rod (12) is connected with the blade tip auxiliary blade body (2), and the other end of the auxiliary blade body ejector rod (12) is connected with the pulling-away rope (10). The pulling-away rope (10) is limited and steered by a fixed pulley (17). The telescopic wind-driven generator blade provided with the cap-shaped blade tip is characterized in that the blade tip auxiliary blade body (2) is in a cap shape, and the outer wall of the sharp end of the main blade body (4) is sleeved with the blade tip auxiliary blade body (2). In this way, the blade tip auxiliary blade body extends and retracts outside the wall of the main blade body, an original longitudinal beam in the main blade body is fixed, the blade tip auxiliary blade body is wide, the extending and retracting amplitudes of the blade tip are large, and therefore the amplification of the power generating capacity is large; and when a wind speed is high, the rotor diameter becomes smaller, and therefore the telescopic wind-driven generator blade provided with the cap-shaped blade tip is more beneficial for typhoon resistance and transportation.

Description

technical field [0001] The invention relates to a device for converting wind kinetic energy into mechanical rotational energy and then into electric energy, which belongs to the technical field of clean new energy. Background technique [0002] Utility Model Patent Authorization Announcement No. CN 204140289 U and Invention Patent Application No. 201410515905.2 (the inventors are all the authors of this article) patent specification discloses the following content: a horizontal axis type blade-tip retractable wind motor blade has a main blade and a blade-tip auxiliary blade , the auxiliary blade of the blade tip can move relatively along the longitudinal direction of the main blade under the action of pulling back the rope and pulling the rope; Rope is connected, pulls out rope and turns to by fixed pulley (16) spacing. The patented solution has the main advantages of a large increase in the diameter of the wind rotor at medium and low wind speeds, a corresponding increase ...

AI Technical Summary

Problems solved by technology

However, the tip auxiliary blade is telescopic within the main blade, and generally the original longitudinal beam at the tip of the main blade needs to be removed to make way for the tip auxiliary blade. Although there are reinforcement measures, it is not easy for users to accept it with confidence.

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