阅读说明：本技术 一种双瓣竖式回旋风力叶片 (Double-petal vertical type convolution wind blade ) 是由 不公告发明人 于 2021-08-21 设计创作，主要内容包括：本发明公开一种双瓣竖式回旋风力叶片,是一种风力发电的核心部件,技术方案为双瓣竖式回旋风力叶片(2)由固定杆(3)固定成形,双瓣竖式回旋风力叶片(2)通过固定杆(3)可滑动式装于中轴(1)上,在双瓣竖式回旋风力叶片(2)中空部通过圆柱固定杆(5)固定在中轴(1)上装设有圆柱(4),在中轴(1)顶部装设有顶盖(6)。本发明部件可应用于风力发电,解决提高效能与保护的技术问题,一级风即可起动,效率得到极大提高。(The invention discloses a bivalve vertical convolution wind blade which is a core component of wind power generation, and the technical scheme is that a bivalve vertical convolution wind blade (2) is fixedly formed by a fixing rod (3), the bivalve vertical convolution wind blade (2) is slidably arranged on a center shaft (1) through the fixing rod (3), a hollow part of the bivalve vertical convolution wind blade (2) is fixed on the center shaft (1) through a cylindrical fixing rod (5) and is provided with a cylinder (4), and the top of the center shaft (1) is provided with a top cover (6). The component can be applied to wind power generation, the technical problems of efficiency improvement and protection are solved, the component can be started by primary wind, and the efficiency is greatly improved.)

1. A two-lobe vertical convolution wind blade is characterized in that: the double-petal vertical type convolution wind power blade (2) is fixedly formed by a fixing rod (3), the double-petal vertical type convolution wind power blade (2) is arranged on the middle shaft (1) in a sliding mode through the fixing rod (3), a cylinder (4) is fixedly arranged on the middle shaft (1) through a cylindrical fixing rod (5) in the hollow part of the double-petal vertical type convolution wind power blade (2), and a top cover (6) is arranged at the top of the middle shaft (1).

2. A two-lobe vertical convolution wind blade according to claim 1 wherein: the double-lobe vertical type rotary wind power blade (2) can independently slide left and right on the middle shaft (1).

3. A two-lobe vertical convolution wind blade according to claim 1 wherein: the shape of the double-petal vertical type rotary wind power blade (2) is in a semicircular, involute or streamline design.

4. A two-lobe vertical convolution wind blade according to claim 1 wherein: the matching design of the double-flap vertical convolution wind power blade (2) and the cylinder (4) is to enable the A area and the B area to generate a Laval nozzle effect.

Technical Field

The invention discloses a wind blade, in particular to a double-flap vertical type rotary wind blade.

Background

Wind power generation originated approximately in 1887. The association of wind workers was created in 1905. And the first Journal of Wind power generation in the world, Journal of Wind electric, appeared. During world war ii, two-bladed, three-bladed fans appeared. In 1951, wind dc generators were replaced by ac asynchronous generators. After the first oil crisis in 1973, wind energy is paid attention to and continuously developed. Megawatt fans appeared in 1998 and were under constant improvement until now.

The key core element of wind power generation is the innovation and control method of the wind blade and the generator.

In modern times, many mechanisms and individuals are researching wind blades, and breakthroughs are continuously made in structure, efficiency, safety and reliability and reduction of manufacturing cost. Patented technology in this respect is numerous throughout the world.

Taking China as an example, a plurality of technical structural schemes of the wind blade applied for Chinese patent are provided. For example, the patent application No. CN202110410285.6 is a vertical axis wind turbine system, and is mainly made into a vertical axis blade; the application number is CN201910846090.9, and the integrated system of the small vertical axis wind power generation building parapet component is mainly used for being installed on the parapet; the invention also relates to a wing structure of a vertical axis wind turbine with the application number of CN 202022369400.3.

The network information also introduces a breeze power generation system invented by Israel scientists, but the blade structure, the overall efficiency and the safety protection of the breeze power generation system all have places needing improvement.

Therefore, scientific research personnel of the company innovate the wind power blade from the aspects of pneumatic hydrodynamics and protection application, can realize the wind power application all day long, can start with 1 grade wind, can close with more than 8 grade wind, and can be used for the wind power blade of electricity generation 24 hours a day.

Disclosure of Invention

The invention aims to provide an efficient wind blade capable of being opened and closed.

The technical scheme for realizing the invention is as follows: the double-petal vertical type convolution wind power blade structure is characterized in that a double-petal vertical type convolution wind power blade is fixedly formed by a fixing rod, the double-petal vertical type convolution wind power blade is slidably arranged on a middle shaft through the fixing rod, a cylinder is fixedly arranged on the middle shaft through a cylindrical fixing rod in the hollow part of the double-petal vertical type convolution wind power blade, and a top cover is arranged at the top of the middle shaft 1.

The double-flap vertical type rotary wind power blade can independently slide left and right on the middle shaft, and the opening and closing functions are realized. The shape of the two-lobed vertical swirl wind blade may be a semi-circular, involute, or streamlined design.

The key technology of the core is that the matching design of the double-flap vertical type convolution wind power blade and the cylinder is to enable the A area and the B area to generate a Laval nozzle effect and generate convolution wind power.

The invention has the beneficial effects that: the wind blade can start power generation by first-grade wind and can be closed and protected by more than eight-grade wind; by adopting the aerodynamic fluid mechanics principle, the Laval nozzle effect in the A, B area is designed, and the back cyclone is generated, so that the working efficiency of the wind power blade is improved to the maximum extent; the top cover is arranged to prevent rainwater erosion, so that the generator is effectively protected.

Drawings

FIG. 1 is a schematic cross-sectional view of the main structure of the present invention;

FIG. 2 is a top view of the present invention;

in the figure: 1 is a middle shaft, 2 is a bivalve vertical wind blade, 3 is a fixed rod, 4 is a cylinder, 5 is a cylinder fixed rod, and 6 is a top cover.

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): a two-lobe vertical convolution wind blade.

A double-petal vertical type convolution wind power blade structure is characterized in that a double-petal vertical type convolution wind power blade 2 is fixedly formed by a fixing rod 3, the double-petal vertical type convolution wind power blade 2 can be slidably arranged on a center shaft 1 through the fixing rod 3, a cylinder 4 is fixedly arranged on the center shaft 1 through a cylindrical fixing rod 5 in a hollow part of the double-petal vertical type convolution wind power blade 2, and a top cover 6 is arranged at the top of the center shaft 1.

Specifically, the two-lobe vertical type rotary wind power blade 2 can independently slide left and right on the central shaft 1, and the opening and closing functions are realized. The shape of the double-petal vertical type rotary wind power blade 2 adopts streamline design. When in use, the opening-closing ratio is preferably 0.618.

The key core design technology is that the matching design of the double-petal vertical type rotary wind power blade 2 and the cylinder 4 enables the A area and the B area to generate a Laval nozzle effect and generate rotary wind power, so that the efficiency of the blade for doing work externally is improved to the maximum extent.

Furthermore, the opening and closing functions can be automated, and the wind power can be automatically sensed, so that the wind power can be automatically closed when the wind power is more than eight levels, and the wind power blades can be effectively and timely protected from being blown to be damaged.

The wind blade is made of wear-resistant materials and can be selected in the market.

The two-lobe vertical type rotary wind power blades of the embodiment of the invention can be used in groups to form an array, so that a high-power application mode is formed.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.