CN207634245U - A kind of wind power generation plant - Google Patents

Abstract

The utility model discloses a wind power generation device, which comprises a generator, a vertical rod, a connecting rod and blades, a mounting plate is installed above the vertical rod, a generator is mounted above the mounting plate, a plurality of connecting rods are mounted above the generator, and the connecting rod Blades are installed at the ends of the utility model, which solves the technical problems of low wind-capturing efficiency, poor wind resistance and inconvenient maintenance of wind power generation devices in the prior art.

Description

A kind of wind power generation device

technical field

The utility model relates to the technical field of wind power generation, in particular to a wind power generation device.

Background technique

Wind energy and photovoltaics - as one of the new energy sources closest to the cost of thermal power today, has very broad development prospects. The national "13th Five-Year Plan" will also promote the implementation of wind power grid parity. In China, wind energy and solar energy are used as supplementary energy to traditional energy; however, in foreign countries, wind energy has already become one of the mainstream energy sources. Germany's wind energy meets about 10% of energy demand, and Denmark's proportion has exceeded 50%, but the domestic wind power generation system cannot be widely promoted, partly because of the low wind capture efficiency of wind turbines, and partly because of the low starting torque , it is difficult to start; some are due to poor wind resistance, which affects the use.

Utility model content

The purpose of the utility model is to provide a wind power generation device, which solves the technical problems of low wind capture efficiency, poor wind resistance and inconvenient maintenance in the prior art.

A wind power generation device, comprising a generator, a pole, a connecting rod and blades, a mounting plate is installed above the pole, a generator is mounted above the mounting plate, a plurality of connecting rods are mounted above the generator, Blades are installed at the ends of the connecting rods.

On the basis of the above technical solution, the utility model can also be improved as follows:

Further, the generator includes a rotor, a stator, a bearing and a rotating shaft, the stator is fixed on the mounting plate through fasteners, the bearing is arranged in the middle of the stator, and the rotating shaft is installed inside the bearing, so The rotor is connected above the rotating shaft, and the connecting rod is installed above the rotor. The beneficial effect of adopting the utility model is that the stability of the stator can be guaranteed, and the rotation of the blades drives the rotation of the rotor, thereby realizing power generation, and the structure uses a smaller bearing , easy to go out, easy to install, and stable in structure.

Further, the rotor includes a horizontal section and a vertical section, the horizontal section is installed above the rotating shaft, the vertical sections are respectively arranged at both ends of the horizontal section, and the vertical section is located outside the stator.

Furthermore, there is a gap between the end of the vertical section and the stator, and a dynamic sealing structure is adopted. The beneficial effect of adopting the step is that the rotor can be moved conveniently while the bearing is fixed.

Further, the blade is a hollow blade, and the outer surface of the blade is arc-shaped. The beneficial effect of adopting this step is that the hollow blade can reduce the weight, thereby reducing the centrifugal force and reducing the connecting rod between the generator and the blade. strength requirements.

Further, the inside of the blade is provided with a spacer, and the outer surface of the spacer is arc-shaped. The beneficial effect of adopting this step is to use the spacer to support the hollow blade, ensuring the stability of the hollow blade and the strength of the joint.

Further, the spacer is provided with a bolt connection hole, and the beneficial effect of adopting this step is that the bolt connection hole of the spacer is used to complete the connection, ensuring that the blade is installed at the end of the connecting rod.

Further, the connecting rod is an elastic telescopic rod. The beneficial effect of adopting this step is that the telescopic rod is in a contracted state when starting, the diameter of the blade track circle is small, the solidity of the fan is large, and the driving torque generated by wind force is large.

The beneficial effects of the utility model:

The utility model is a wind power generation device, the generator is arranged on the mounting plate, which can be easily disassembled and installed; the utility model adopts the blades of the hollow structure, which can reduce the quality, reduce the centrifugal force during high-speed operation, and reduce the number of connectors. strength requirements; the connecting rod used in the utility model is a telescopic rod, so that when starting, the speed is low, the centrifugal force is small, the telescopic rod is in a contracted state, the diameter of the blade track circle is small, and the solidity of the blade is large, so that the The starting torque is larger at lower wind speeds, so that the fan can self-start at lower wind speeds. After starting, as the speed increases, the centrifugal force increases, the telescopic rod elongates, and the diameter of the blade track circle increases, thereby reducing the blade solidity, increasing the tip speed ratio of the fan, improving the aerodynamic efficiency of the fan, and the blade diameter The windward area is enlarged, the converted wind energy is increased, and the power generation is greatly increased. When encountering strong winds, due to the small solidity of the blades, the aerodynamic stall performance of the fan is better. When the speed is controlled at a certain limit, the torque in the strong wind will not exceed the maximum torque capacity of the generator, so that the fan will not overspeed. , improve the wind resistance of the fan; the utility model is provided with pads in the middle of the blades, which can effectively prevent the damage caused by the twisting of the blades, and facilitate the installation of the blades; the utility model is simple in structure, easy to install, and has high practicability.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Fig. 1 is the structural representation of a kind of wind power generation device described in the specific embodiment 1 of the utility model;

Fig. 2 is a schematic structural diagram of a generator part of a wind power generating device described in Embodiment 1 of the present invention;

Fig. 3 is a top view of a wind power generating device described in Embodiment 2 of the utility model;

Fig. 4 is a schematic diagram of the blade structure of a wind power generation device described in Embodiment 2 of the utility model;

Fig. 5 is a schematic structural diagram of a connecting rod of a wind power generation device described in Embodiment 3 of the present invention;

Reference signs:

1-generator; 2-pole; 3-connecting rod; 4-blade; 5-installation plate; 6-rotor; 7-stator; 8-bearing; 9-rotating shaft; 10-fastener; 11-vertical section; 12-horizontal section; 13-block; 14-reinforcing rib.

Detailed ways

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Example 1

As shown in Figure 1, a wind power generation device provided by the utility model includes a generator 1, a vertical pole 2, a connecting rod 3 and blades 4, a mounting plate 5 is installed above the vertical pole 2, and the mounting plate A generator 1 is installed above the generator 1, and a plurality of connecting rods 3 are installed above the generator 1. Blades 4 are installed on the ends of the connecting rods 3. The mounting plate 5 can facilitate the integrated installation of the generator 1, and at the same time facilitate the For replacement and maintenance, reinforcing ribs 14 can be connected between the mounting plate 5 and the pole 2 to improve stability.

Wherein, as shown in FIG. 2, the generator 1 includes a rotor 6, a stator 7, a bearing 8 and a rotating shaft 9, and the stator 7 is fixed on the mounting plate 5 by a fastener 10, and the fastener 10 can be fastening bolts or other fastening parts, the bearing 8 is arranged in the middle of the stator 7, the rotating shaft 9 is installed inside the bearing 8, the rotor 6 is connected above the rotating shaft 9, and the connecting rod 3 is installed Above the rotor 6, a dynamic seal can ensure the stability of the stator 7.

Wherein, the rotor 6 includes a horizontal section 11 and a vertical section 12, the horizontal section 11 is installed above the rotating shaft 9, the vertical section 12 is respectively arranged at both ends of the horizontal section 11, and the vertical section 12 is located outside the stator 7, there is a gap between the end of the vertical section 12 and the stator 7, and a dynamic sealing structure is provided at the gap, which can facilitate the movement of the rotor while fixing the bearing.

Example 2

As shown in Figure 3, the blade 4 is a hollow blade, and the outer surface of the blade 4 is arc-shaped, and a pad 13 is arranged inside the blade 4, and the outer surface of the pad 13 is arc-shaped, The pads 13 are arranged at intervals up and down, and the hollow blades are supported by the pads 13 to ensure the stability of the hollow blades.

Wherein, the spacer 13 is provided with a bolt connection hole, and the spacer 13 is two pieces, which are arranged at intervals up and down, so as to ensure that the blades will not be twisted.

The shape of the blade in the utility model adopts an aircraft airfoil with good aerodynamic performance, and the internal cavity of the blade adopts a box structure, which improves the strength and stability of the blade and can maximize the use of the lift characteristics of the airfoil.

Example 3:

As shown in Figure 3, the connecting rod 3 can be an elastic telescopic rod. When starting up, the speed is low, the centrifugal force is small, the telescopic rod is in a contracted state, the diameter of the blade track circle is small, and the solidity of the blade is relatively large. , so that the starting torque is larger at lower wind speeds, so that the fan can self-start at lower wind speeds; when it is started, the centrifugal force increases, the telescopic rod is extended, and the diameter of the blade track circle increases, thereby reducing the solidity of the blades , so that the tip speed ratio of the fan is increased, the aerodynamic efficiency of the fan is improved, and the diameter of the blade is increased to increase the windward area, increase the converted wind energy, and greatly increase the power generation; when encountering strong winds, due to the small solidity of the blade, The aerodynamic stall performance of the fan is good. When the speed is controlled at a certain limit, the torque in strong winds will not exceed the maximum torque capacity of the generator, so that the fan will not overspeed, and the wind resistance of the fan will be improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the embodiments of the present utility model Scope of technical solutions.

Claims (9)

1. a kind of wind power generation plant, which is characterized in that including generator, upright bar, connecting rod and blade, peace above the upright bar Equipped with mounting disc, generator is installed above the mounting disc, multiple connecting rods, the connection are installed above the generator The end of bar is equipped with blade.

2. a kind of wind power generation plant according to claim 1, which is characterized in that the generator include rotor, stator, Bearing and shaft, the stator are fixed on by fastener in the mounting disc, and the bearing, institute are provided in the middle part of the stator It states Bearing inner and shaft is installed, the rotor, the connecting rod side of being mounted on the rotor are connected with above the shaft.

3. a kind of wind power generation plant according to claim 2, which is characterized in that the rotor includes horizontal segment and vertical Section, the horizontal segment are mounted on above the shaft, and the vertical section is separately positioned on the horizontal segment both ends, and vertical section On the outside of the stator.

4. a kind of wind power generation plant according to claim 3, which is characterized in that between the vertical section end and stator There are gap, the gap location is provided with movable sealing structure.

5. a kind of wind power generation plant according to claim 1, which is characterized in that the blade is hollow blade, and leaf The outer surface of piece is circular arc type.

6. a kind of wind power generation plant according to claim 5, which is characterized in that the blade interior is provided with cushion block, The outer surface of the cushion block is circular arc type.

7. a kind of wind power generation plant according to claim 6, which is characterized in that offer and be bolted on the cushion block Hole.

8. according to a kind of any wind power generation plants of claim 1-7, which is characterized in that the connecting rod is flexible Bar.

9. a kind of wind power generation plant according to claim 8, which is characterized in that connected between the mounting disc and upright bar There is reinforcing rib.