CN201546904U - Permanent Magnetic Levitation Vertical Axis Wind Turbine - Google Patents

Abstract

The utility model relates to a permanent magnetic floating vertical axis wind driven generator which is used for improving the wind driven power generation efficiency and reducing the cost. The wind driven generator adopts the following technical scheme: the wind driven generator comprises a tower, a vertical main shaft, a shaft sleeve, fan blades and a permanent magnet generator; wherein the vertical main shaft is fixed on the tower, the shaft sleeve is covered outside the vertical main shaft through an upper bearing and a lower bearing, a plurality of fan blades are arranged and uniformly fixed outside the shaft sleeve, the torque output by the shaft sleeve drives the permanent magnet generator, an upper magnetic ring coaxial with the shaft sleeve is arranged in the shaft sleeve, and a lower magnetic ring opposite to the upper magnetic ring in homopolarity and positioned below the upper magnetic ring is suited on the vertical main shaft. The permanent magnetic floating vertical axis wind driven generator has the advantages that the structure is simple, the manufacturing cost is low, the friction resistance is small, and the energy conversion efficiency is high, thereby being especially suitable for generating power in areas far away from electric networks or with abnormal electric networks while with ordinary wind energy condition.

Description

Permanent Magnetic Levitation Vertical Axis Wind Turbine

technical field

The utility model relates to an improved vertical axis wind power generator, which belongs to the technical field of wind power engines.

Background technique

With the depletion of global chemical energy, wind power has attracted more and more attention. Compared with horizontal-axis wind turbines, vertical-axis wind turbines have the characteristics of high wind energy utilization and low noise, and have been favored in recent years. Existing vertical axis wind turbines generally use mechanical bearings to fix and support the blades. Although this structure has low cost, it has disadvantages such as large resistance, high start-up wind speed and cut-in wind speed, and relatively low efficiency; electromagnetic levitation wind power Although the performance of the generator has been improved, each suspension bearing needs to be equipped with a control device, which is very expensive. In addition, the mechanical transmission mode is adopted between the blades of the existing wind power generator and the engine, and the energy loss is relatively large.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a permanent magnetic levitation vertical axis wind power generator with simple structure, low manufacturing cost and high energy conversion efficiency.

Problem described in the utility model is realized with following technical scheme:

A permanent magnetic levitation type vertical axis wind power generator, which is composed of a tower, a vertical main shaft, a shaft sleeve, wind blades and a permanent magnet generator, the vertical main shaft is fixed on the tower, and the shaft sleeve passes through an upper bearing and a lower bearing Set on the outside of the vertical main shaft, there are multiple fan blades, which are evenly fixed on the outside of the shaft sleeve. The torque output by the shaft sleeve drives the permanent magnet generator. The upper magnetic ring coaxial with the shaft sleeve is arranged in the shaft sleeve. A lower magnetic ring opposite to the upper magnetic ring and located below the upper magnetic ring is sheathed on the vertical main shaft.

The above-mentioned permanent magnetic levitation type vertical axis wind power generator, the permanent magnet generator is composed of a stator and a plurality of outer magnetic blocks, the outer magnetic blocks are evenly distributed on the outer surface of the lower end of the sleeve along the circumferential direction, and the stator is installed The plate is fixedly connected to the lower end of the vertical main shaft and is opposite to the outer magnetic block.

In the permanent magnetic levitation type vertical axis wind power generator, a height adjusting bolt of the lower magnetic ring is arranged under the lower magnetic ring.

The utility model utilizes the repulsive force between the upper magnetic ring and the lower magnetic ring to carry the weight of the fan blade and the shaft sleeve. The upper bearing and the lower bearing only play a role of radial support for the fan blade and the shaft sleeve without bearing weight, so their friction The resistance is small, which reduces the starting wind speed and cut-in wind speed of the wind generator, and improves the energy conversion efficiency. The wind energy received by the blades is magnetically coupled to the permanent magnet generator, reducing energy loss. The height adjustment bolt of the lower magnetic ring can adjust the repulsive force between the two magnetic rings by adjusting the gap between the upper magnetic ring and the lower magnetic ring, so that it can just offset the weight of the fan blade and the shaft sleeve. The utility model not only has simple structure and low manufacturing cost, but also has small frictional resistance and high energy conversion efficiency, and is especially suitable for generating electricity in areas where the wind energy condition is average, far away from the power grid or the power grid is abnormal.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the top view of fan blade and axle sleeve;

Figure 3 is a schematic diagram of the installation of the upper and lower magnetic rings;

Fig. 4 is a schematic diagram of the structure of the permanent magnet generator.

The labels in the figure are: 1. Vertical main shaft; 2. Upper bearing; 3. Shaft sleeve; 4. Fan blade; 5. Lower bearing; 6. Upper fixing sleeve; 7. Upper magnetic ring; 8. Lower magnetic ring; 9 10. Outer magnetic block; 11. Mounting plate; 12. Stator; 13. Tower; 14. Adjusting bolts for the height of the lower magnetic ring.

Detailed ways

Referring to Fig. 1 and Fig. 2, the utility model includes a vertical main shaft 1, an upper bearing 2, a shaft sleeve 3, a fan blade 4, a lower bearing 5, an upper fixed sleeve 6, an upper magnetic ring 7, a lower magnetic ring 8, and a lower fixed sleeve 9 , the outer magnetic block 10, the mounting plate 11, the stator 12, the tower frame 13 and the height adjustment bolt 14 of the lower magnetic ring, the upper fixed sleeve 6 and the lower fixed sleeve 9 are provided for the convenience of the installation of the upper magnetic ring 7 and the lower magnetic ring 8 The lower end of the vertical main shaft 1 is connected with the tower 13, and the lower fixed sleeve 9, the lower magnetic ring 8, the upper magnetic ring 7, the upper fixed sleeve 6, the lower bearing 5, the shaft sleeve 3, and the upper bearing are successively installed on the vertical main shaft 1. 2. The lower fixing sleeve 9 is firmly bonded to the lower magnetic ring 8, and the upper fixing sleeve 6 is firmly bonded to the upper magnetic ring 7. The shaft sleeve 3 is equipped with three fan blades 4, and the three fan blades 4 are uniformly distributed at an angle of 120°; the mounting plate 11 is fixed on the vertical main shaft 1, the stator 12 is fixed on the mounting plate 11, and the lower end of the shaft sleeve 3 is glued with an outer The magnetic block 10, the outer magnetic block 10 and the iron shell of the stator are magnetically connected; the height adjusting bolt 14 of the lower magnetic ring is fixed on the mounting plate 11.

Referring to Fig. 1, Fig. 3, the integral upward support of the present utility model is made up of upper magnetic ring 7 and lower magnetic ring 8, and upper magnetic ring 7 and lower magnetic ring 8 distances are adjustable (this distance is relevant to the weight of the top). The upper bearing 2 and the lower bearing 5 radially support the shaft sleeve 3, and there is no downward pressure so the frictional resistance is very small.

Referring to Fig. 4, the utility model is made of the outer magnetic block 10 and the iron shell of the stator 12 through magnetic transmission, there is no mechanical contact between them so there is no energy loss. When the sleeve 3 rotates, a plurality of outer magnetic blocks 10 pass through the stator 12 in turn, so that an alternating magnetic field is generated in the stator 12, and an alternating voltage is induced in the stator coil.

Because the utility model adopts the permanent magnetic levitation structure and magnetic transmission, the magnetic circuit is simplified, so the installation is simple and fast, the transportation is convenient, the wind energy utilization rate is high, and the cost is low. It is suitable for power generation in areas with normal wind energy conditions, far away from the power grid or abnormal power grid. The upper magnetic ring 7, the lower magnetic ring 8, and the outer magnetic block 10 are all formed by die-casting with an open steel mold, and are high in precision and suitable for large-scale production.

The installation process of the present utility model is: first fix the tower frame 13 in the selected position, fix the mounting plate 11 and the vertical main shaft 1 on the tower frame 13, install the lower fixing sleeve 9 and the lower magnetic ring 8 that have been glued firmly on the Put the upper fixed sleeve 6 and the upper magnetic ring 7 on the vertical main shaft 1, and then install the lower bearing 5 in the shaft sleeve 3, and then install the shaft sleeve 3 on the vertical main shaft 1, The upper bearing 2 is installed, and the fan blades 4 are staggered and installed in the middle of the shaft sleeve 3 at a certain angle (this angle is related to the number of the fan blades 4). Adjust the gap between the upper magnetic ring 7 and the lower magnetic ring 8 to achieve force balance, fix the stator 12 on the mounting plate 11, and the distance between the stator 12 and the glued outer magnetic block 10 at the bottom of the shaft sleeve 3 . In this way, the wind blade 4 is driven by strong wind to rotate, and the wind blade 4 drives the shaft sleeve 3 to rotate, so that the outer magnetic block 10 drives the stator 12 to generate electricity.

After the utility model is installed and debugged, the gravity of the fan blade 4 and the shaft sleeve 3 acts on the mounting plate through the upper fixed sleeve 6, the upper magnetic ring 7, the lower magnetic ring 8, the lower fixed sleeve 9, and the height adjustment bolt 14 of the lower magnetic ring. 11, thus upper bearing 2 and lower bearing 5 are not load-bearing.

The utility model can be started at a low wind speed, has no noise, and is a silent wind power generator. It is generally applicable to areas with normal wind energy conditions, far away from the power grid or abnormal power grid, to supply power for home appliances (such as TV sets, lights, etc.), monitoring facilities, communication equipment and other small and medium-sized power-consuming facilities.

Claims (3)

1. a permanent maglev type vertical axis wind-driven generator is characterized in that it is made up of a tower (13), a vertical main shaft (1), an axle sleeve (3), fan blades (4) and a permanent magnet generator. The vertical main shaft (1) is fixed on the tower (13), the shaft sleeve (3) is set on the outside of the vertical main shaft (1) through the upper bearing (2) and the lower bearing (5), and the fan blade (4) Evenly fixed on the outside of the shaft sleeve (3), the torque output by the shaft sleeve (3) drives the permanent magnet generator, and an upper magnetic ring (7) coaxial with the shaft sleeve (3) is arranged inside the shaft sleeve (3), A lower magnetic ring (8) opposite to the upper magnetic ring (7) with the same pole and located below the upper magnetic ring (7) is sleeved on the vertical main shaft (1). 2. according to the described permanent maglev vertical axis wind power generator of claim 1, it is characterized in that, described permanent magnet generator is made of stator (12) and a plurality of outer magnetic pieces (10), and described outer magnetic piece (10 ) are evenly distributed on the outer surface of the lower end of the sleeve (3) along the circumferential direction, and the stator (12) is affixed to the lower end of the vertical main shaft (1) through the mounting plate (11) and is opposite to the outer magnetic block (10). 3. The permanent magnetic levitation vertical axis wind power generator according to claim 1 or 2, characterized in that a lower magnetic ring height adjustment bolt (14) is provided below the lower magnetic ring (8).

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