CN211082134U

CN211082134U - Vertical axis wind turbine blade structure capable of reducing wind resistance

Info

Publication number: CN211082134U
Application number: CN201921716700.5U
Authority: CN
Inventors: 张晓芬; 张晓宇; 汤盛信; 林保炫
Original assignee: Jiangmen Polytechnic
Current assignee: Jiangmen Polytechnic
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-07-24
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a can reduce vertical axis aerogenerator blade structure of windage, include: the connecting shaft is vertically arranged; the two wind power blades are symmetrically connected to the outer wall of the connecting shaft, and the surfaces of the two wind power blades are provided with ventilation holes; the baffle plate assemblies are two, the two baffle plate assemblies are arranged oppositely and are respectively hinged to the two wind power blades for opening and closing the vent holes. When the concave side of the first wind blade faces the wind, the baffle assembly on the first wind blade closes the vent hole under the pushing of the wind, and the wind quickly pushes the wind blade to rotate, so that the wind energy utilization rate is improved; at this time, the baffle plate assembly on the second wind blade is pushed by wind to open the vent hole, so that the wind can directly flow from the convex side to the concave side of the wind blade through the vent hole, thereby reducing the wind resistance of the wind blade and further improving the power generation efficiency of the wind driven generator.

Description

Vertical axis wind turbine blade structure capable of reducing wind resistance

Technical Field

The utility model relates to a aerogenerator blade technical field, more specifically the vertical axis aerogenerator blade structure that can reduce windage that says so relates to.

Background

With the gradual serious energy crisis and the increasing pressure of environmental pollution on human beings and nature, the new energy industry is greatly enthusiastic and expected all over the world. The wind driven generator is taken as an important part of new energy industry, and is highly valued by governments of various countries, so that the technology development is fast and the popularization degree is high. The key of the wind driven generator is the aerodynamic technology of the blades, which restricts the development of the wind driven generator technology.

The vertical axis wind driven generator is widely used due to the advantages of advanced design method, high wind energy utilization rate, low starting wind speed, no noise and the like, but in the actual use process, the blades of the existing vertical axis wind driven generator are usually subjected to larger wind resistance, so that the efficiency of the wind driven generator is greatly reduced.

Therefore, it is an urgent need to solve the problem of providing a vertical axis wind turbine blade structure capable of reducing wind resistance to improve the power generation efficiency of the wind turbine.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a vertical axis aerogenerator blade structure that can reduce the windage to improve aerogenerator's generating efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a vertical axis wind turbine blade structure capable of reducing wind resistance comprises:

the connecting shaft is vertically arranged;

the number of the wind power blades is two, the two wind power blades are symmetrically connected to the outer wall of the connecting shaft, and the surfaces of the two wind power blades are provided with ventilation holes;

the baffle plate assemblies are two and are oppositely arranged and are respectively hinged to the two wind blades and used for opening and closing the ventilation holes.

According to the technical scheme, compared with the prior art, the utility model discloses a vertical axis wind turbine blade structure capable of reducing wind resistance, namely when the concave side of the first wind blade faces the wind, the baffle component on the first wind blade is pushed by the wind to close the ventilation hole on the wind blade, so that the wind is completely acted on the concave side of the wind blade to push the first wind blade to rotate quickly, and the wind energy utilization rate is improved; the convex side of the second wind blade is in a windward state, and the baffle plate assembly on the second wind blade opens the vent hole on the wind blade under the pushing of wind, so that part of wind can directly flow to the concave side from the convex side of the wind blade through the vent hole, thereby reducing the wind resistance of the second wind blade, further improving the wind energy utilization rate and further improving the generating efficiency of the wind driven generator.

Furthermore, the two wind blades are both arc-shaped structures and are arranged in an S shape, and the two baffle plate assemblies are respectively hinged to the concave side of the two wind blades. The frontal area can be increased, and the wind energy utilization rate is improved.

Further, two connection blocks arranged at intervals are fixedly connected to the concave side of the wind blade, and the baffle plate assembly comprises: connecting rod spare and baffle, connecting rod spare one end is articulated to be connected two between the connecting block, the other end is connected with and is used for opening and closing the dog in ventilation hole.

Further, the ventilation hole with the dog is a plurality of, just the number in ventilation hole with the number of dog equals.

Further, the connection rod member includes:

two ends of a transverse rod of the T-shaped connecting rod are respectively spliced and rotatably connected with the two connecting blocks;

the middle of the cross rod is connected with the tail end of the vertical rod of the T-shaped connecting rod, and the two ends of the cross rod are connected with the check blocks.

And one end of the damping spring is fixedly connected with the outer wall of the vertical rod of the T-shaped connecting rod, and the other end of the damping spring is fixedly connected with the concave side of the wind blade. The setting of damping spring can guarantee that dog and ventilation hole are slow contact when closing the ventilation hole, rather than striking fast and lead to wind-force blade vibration and reduce wind-force blade's life.

Further, a rubber layer is adhered to the hole wall of the vent hole. The dog is soft contact with the rubber layer, further avoids the dog to produce the vibration when contacting with the ventilation hole, and leads to wind-force blade to damage.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic side view of a blade structure of a vertical axis wind turbine capable of reducing wind resistance according to the present invention.

Fig. 2 is a front view structure diagram of fig. 1.

Fig. 3 is a schematic top view of the structure of fig. 1.

Wherein: 1-connecting shaft, 2-wind power blade, 21-vent hole, 3-baffle component, 31-connecting rod piece, 311-T-shaped connecting rod, 312-cross rod, 32-stop block, 4-connecting block and 5-damping spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses vertical axis aerogenerator blade structure that can reduce windage, include:

the connecting shaft 1 is vertically arranged;

the number of the wind power blades 2 is two, the two wind power blades 2 are symmetrically connected to the outer wall of the connecting shaft 1, and the surfaces of the two wind power blades 2 are provided with air vents 21;

the number of the baffle assemblies 3 is two, and the two baffle assemblies 3 are arranged oppositely and are respectively hinged to the two wind power blades 2 for opening and closing the ventilation holes 21.

Wherein, two wind-force blades 2 are arc structure, and the two is "S" type and arranges, and two baffle components 3 articulate the concave side of connecting two wind-force blades 2 respectively.

Two interval arrangement's connecting block 4 are located the concave side fixedly connected with on wind blade 2, and baffle plate assembly 3 includes: a connecting rod 31 and a baffle 32, wherein one end of the connecting rod 31 is hinged between the two connecting blocks 4, and the other end is connected with a stopper 32 for opening and closing the vent 21.

The connection link 31 includes:

two ends of a transverse rod of the T-shaped connecting rod 311 are respectively spliced and rotatably connected with the two connecting blocks 4;

the middle of the cross rod 312 is connected with the tail end of the vertical rod of the T-shaped connecting rod 311, and the two ends of the cross rod 312 are both connected with the stoppers 32.

This aerogenerator blade structure still includes damping spring 5, and damping spring 5 one end and the vertical pole outer wall fixed connection of T shape connecting rod 311, the other end and the concave surface side fixed connection of power blade 2. The setting of damping spring can guarantee that dog and ventilation hole are slow contact when closing the ventilation hole, rather than striking fast and lead to wind-force blade vibration and reduce wind-force blade's life. And to further reduce the vibration of the wind blade, a rubber layer (not shown) is adhered to the hole wall of the vent hole 21 so that the stopper is in soft contact with the rubber layer.

Furthermore, according to actual needs, a plurality of ventilation holes 21 and stoppers 32 may be provided, and the number of the ventilation holes 21 is equal to the number of the stoppers 32.

When the concave side of the first wind blade faces the wind, the stop block on the first wind blade is pushed by the wind to close the vent hole on the wind blade, so that the wind completely acts on the concave side of the wind blade to push the first wind blade to rotate quickly, and the wind energy utilization rate is improved; the convex side of the second wind blade is in a windward state, and the stop block on the second wind blade opens the vent hole on the wind blade under the pushing of wind, so that part of wind can directly flow to the concave side from the convex side of the wind blade through the vent hole, thereby reducing the wind resistance of the second wind blade, further improving the wind energy utilization rate and further improving the generating efficiency of the wind driven generator.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vertical axis wind turbine blade structure capable of reducing wind resistance, comprising:

the connecting shaft (1), the connecting shaft (1) is vertically arranged;

the number of the wind power blades (2) is two, the two wind power blades (2) are symmetrically connected to the outer wall of the connecting shaft (1), and ventilation holes (21) are formed in the surfaces of the two wind power blades (2);

the wind power blade is characterized in that the number of the baffle plate assemblies (3) is two, the two baffle plate assemblies (3) are arranged oppositely and are respectively hinged to the two wind power blades (2) and used for opening and closing the ventilation holes (21).

2. The blade structure of the vertical axis wind turbine capable of reducing wind resistance according to claim 1, wherein the two wind blades (2) are both arc-shaped and arranged in an "S" shape, and the two baffle plates (3) are respectively hinged to the concave side of the two wind blades (2).

3. A wind resistance reducing vertical axis wind turbine blade structure according to claim 2, wherein two connection blocks (4) are fixedly connected to the wind turbine blade (2) at the concave side, and the baffle plate assembly (3) comprises: connecting rod piece (31) and dog (32), connecting rod piece (31) one end is articulated to be connected two between connecting block (4), the other end is connected with and is used for opening and closing dog (32) of ventilation hole (21).

4. A vertical axis wind turbine blade structure capable of reducing wind resistance according to claim 3, wherein the number of the ventilation holes (21) and the stoppers (32) is equal to the number of the stoppers (32).

5. A wind resistance reducing vertical axis wind turbine blade structure according to claim 3, wherein the connection rod member (31) comprises:

the two ends of the transverse rod of the T-shaped connecting rod (311) are respectively spliced and rotatably connected with the two connecting blocks (4);

the middle of the cross rod (312) is connected with the tail end of the vertical rod of the T-shaped connecting rod (311), and the two ends of the cross rod (312) are connected with the stop blocks (32).

6. The blade structure of the vertical axis wind turbine capable of reducing wind resistance according to claim 5, further comprising a damping spring (5), wherein one end of the damping spring (5) is fixedly connected with the outer wall of the vertical rod of the T-shaped connecting rod (311), and the other end of the damping spring is fixedly connected with the concave side of the wind turbine blade (2).

7. A wind resistance reducing vertical axis wind turbine blade structure according to any one of claims 1 to 6, wherein the wall of the ventilation hole (21) is adhered with a rubber layer.